diff --git a/addons/web/static/lib/Chart/Chart.js b/addons/web/static/lib/Chart/Chart.js index 362e941851b..4c50e09b597 100644 --- a/addons/web/static/lib/Chart/Chart.js +++ b/addons/web/static/lib/Chart/Chart.js @@ -1,728 +1,20 @@ /*! - * Chart.js - * http://chartjs.org/ - * Version: 2.7.3 - * - * Copyright 2018 Chart.js Contributors - * Released under the MIT license - * https://github.com/chartjs/Chart.js/blob/master/LICENSE.md + * Chart.js v2.8.0 + * https://www.chartjs.org + * (c) 2019 Chart.js Contributors + * Released under the MIT License */ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Chart = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i lum2) { - return (lum1 + 0.05) / (lum2 + 0.05); - } - return (lum2 + 0.05) / (lum1 + 0.05); - }, - - level: function (color2) { - var contrastRatio = this.contrast(color2); - if (contrastRatio >= 7.1) { - return 'AAA'; - } - - return (contrastRatio >= 4.5) ? 'AA' : ''; - }, - - dark: function () { - // YIQ equation from http://24ways.org/2010/calculating-color-contrast - var rgb = this.values.rgb; - var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000; - return yiq < 128; - }, - - light: function () { - return !this.dark(); - }, - - negate: function () { - var rgb = []; - for (var i = 0; i < 3; i++) { - rgb[i] = 255 - this.values.rgb[i]; - } - this.setValues('rgb', rgb); - return this; - }, - - lighten: function (ratio) { - var hsl = this.values.hsl; - hsl[2] += hsl[2] * ratio; - this.setValues('hsl', hsl); - return this; - }, - - darken: function (ratio) { - var hsl = this.values.hsl; - hsl[2] -= hsl[2] * ratio; - this.setValues('hsl', hsl); - return this; - }, - - saturate: function (ratio) { - var hsl = this.values.hsl; - hsl[1] += hsl[1] * ratio; - this.setValues('hsl', hsl); - return this; - }, - - desaturate: function (ratio) { - var hsl = this.values.hsl; - hsl[1] -= hsl[1] * ratio; - this.setValues('hsl', hsl); - return this; - }, - - whiten: function (ratio) { - var hwb = this.values.hwb; - hwb[1] += hwb[1] * ratio; - this.setValues('hwb', hwb); - return this; - }, - - blacken: function (ratio) { - var hwb = this.values.hwb; - hwb[2] += hwb[2] * ratio; - this.setValues('hwb', hwb); - return this; - }, - - greyscale: function () { - var rgb = this.values.rgb; - // http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale - var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11; - this.setValues('rgb', [val, val, val]); - return this; - }, - - clearer: function (ratio) { - var alpha = this.values.alpha; - this.setValues('alpha', alpha - (alpha * ratio)); - return this; - }, - - opaquer: function (ratio) { - var alpha = this.values.alpha; - this.setValues('alpha', alpha + (alpha * ratio)); - return this; - }, - - rotate: function (degrees) { - var hsl = this.values.hsl; - var hue = (hsl[0] + degrees) % 360; - hsl[0] = hue < 0 ? 360 + hue : hue; - this.setValues('hsl', hsl); - return this; - }, - - /** - * Ported from sass implementation in C - * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209 - */ - mix: function (mixinColor, weight) { - var color1 = this; - var color2 = mixinColor; - var p = weight === undefined ? 0.5 : weight; - - var w = 2 * p - 1; - var a = color1.alpha() - color2.alpha(); - - var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0; - var w2 = 1 - w1; - - return this - .rgb( - w1 * color1.red() + w2 * color2.red(), - w1 * color1.green() + w2 * color2.green(), - w1 * color1.blue() + w2 * color2.blue() - ) - .alpha(color1.alpha() * p + color2.alpha() * (1 - p)); - }, - - toJSON: function () { - return this.rgb(); - }, - - clone: function () { - // NOTE(SB): using node-clone creates a dependency to Buffer when using browserify, - // making the final build way to big to embed in Chart.js. So let's do it manually, - // assuming that values to clone are 1 dimension arrays containing only numbers, - // except 'alpha' which is a number. - var result = new Color(); - var source = this.values; - var target = result.values; - var value, type; - - for (var prop in source) { - if (source.hasOwnProperty(prop)) { - value = source[prop]; - type = ({}).toString.call(value); - if (type === '[object Array]') { - target[prop] = value.slice(0); - } else if (type === '[object Number]') { - target[prop] = value; - } else { - console.error('unexpected color value:', value); - } - } - } - - return result; - } -}; - -Color.prototype.spaces = { - rgb: ['red', 'green', 'blue'], - hsl: ['hue', 'saturation', 'lightness'], - hsv: ['hue', 'saturation', 'value'], - hwb: ['hue', 'whiteness', 'blackness'], - cmyk: ['cyan', 'magenta', 'yellow', 'black'] -}; - -Color.prototype.maxes = { - rgb: [255, 255, 255], - hsl: [360, 100, 100], - hsv: [360, 100, 100], - hwb: [360, 100, 100], - cmyk: [100, 100, 100, 100] -}; - -Color.prototype.getValues = function (space) { - var values = this.values; - var vals = {}; - - for (var i = 0; i < space.length; i++) { - vals[space.charAt(i)] = values[space][i]; - } - - if (values.alpha !== 1) { - vals.a = values.alpha; - } - - // {r: 255, g: 255, b: 255, a: 0.4} - return vals; -}; - -Color.prototype.setValues = function (space, vals) { - var values = this.values; - var spaces = this.spaces; - var maxes = this.maxes; - var alpha = 1; - var i; - - this.valid = true; - - if (space === 'alpha') { - alpha = vals; - } else if (vals.length) { - // [10, 10, 10] - values[space] = vals.slice(0, space.length); - alpha = vals[space.length]; - } else if (vals[space.charAt(0)] !== undefined) { - // {r: 10, g: 10, b: 10} - for (i = 0; i < space.length; i++) { - values[space][i] = vals[space.charAt(i)]; - } - - alpha = vals.a; - } else if (vals[spaces[space][0]] !== undefined) { - // {red: 10, green: 10, blue: 10} - var chans = spaces[space]; - - for (i = 0; i < space.length; i++) { - values[space][i] = vals[chans[i]]; - } - - alpha = vals.alpha; - } - - values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha))); - - if (space === 'alpha') { - return false; - } - - var capped; - - // cap values of the space prior converting all values - for (i = 0; i < space.length; i++) { - capped = Math.max(0, Math.min(maxes[space][i], values[space][i])); - values[space][i] = Math.round(capped); - } - - // convert to all the other color spaces - for (var sname in spaces) { - if (sname !== space) { - values[sname] = convert[space][sname](values[space]); - } - } - - return true; -}; - -Color.prototype.setSpace = function (space, args) { - var vals = args[0]; - - if (vals === undefined) { - // color.rgb() - return this.getValues(space); - } - - // color.rgb(10, 10, 10) - if (typeof vals === 'number') { - vals = Array.prototype.slice.call(args); - } - - this.setValues(space, vals); - return this; -}; - -Color.prototype.setChannel = function (space, index, val) { - var svalues = this.values[space]; - if (val === undefined) { - // color.red() - return svalues[index]; - } else if (val === svalues[index]) { - // color.red(color.red()) - return this; - } - - // color.red(100) - svalues[index] = val; - this.setValues(space, svalues); - - return this; -}; - -if (typeof window !== 'undefined') { - window.Color = Color; -} - -module.exports = Color; - -},{"2":2,"5":5}],4:[function(require,module,exports){ /* MIT license */ -module.exports = { +var conversions = { rgb2hsl: rgb2hsl, rgb2hsv: rgb2hsv, rgb2hwb: rgb2hwb, @@ -775,7 +67,7 @@ module.exports = { lch2lab: lch2lab, lch2xyz: lch2xyz, lch2rgb: lch2rgb -} +}; function rgb2hsl(rgb) { @@ -1419,12 +711,9 @@ for (var key in cssKeywords) { reverseKeywords[JSON.stringify(cssKeywords[key])] = key; } -},{}],5:[function(require,module,exports){ -var conversions = require(4); - var convert = function() { return new Converter(); -} +}; for (var func in conversions) { // export Raw versions @@ -1508,14 +797,12 @@ Converter.prototype.getValues = function(space) { ["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) { Converter.prototype[space] = function(vals) { return this.routeSpace(space, arguments); - } + }; }); -module.exports = convert; -},{"4":4}],6:[function(require,module,exports){ -'use strict' - -module.exports = { +var colorConvert = convert; + +var colorName = { "aliceblue": [240, 248, 255], "antiquewhite": [250, 235, 215], "aqua": [0, 255, 255], @@ -1664,8185 +951,731 @@ module.exports = { "whitesmoke": [245, 245, 245], "yellow": [255, 255, 0], "yellowgreen": [154, 205, 50] -}; +}; -},{}],7:[function(require,module,exports){ -/** - * @namespace Chart - */ -var Chart = require(30)(); +/* MIT license */ -Chart.helpers = require(46); -// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests! -require(28)(Chart); +var colorString = { + getRgba: getRgba, + getHsla: getHsla, + getRgb: getRgb, + getHsl: getHsl, + getHwb: getHwb, + getAlpha: getAlpha, -Chart.Animation = require(22); -Chart.animationService = require(23); -Chart.defaults = require(26); -Chart.Element = require(27); -Chart.elements = require(41); -Chart.Interaction = require(29); -Chart.layouts = require(31); -Chart.platform = require(49); -Chart.plugins = require(32); -Chart.Scale = require(33); -Chart.scaleService = require(34); -Chart.Ticks = require(35); -Chart.Tooltip = require(36); + hexString: hexString, + rgbString: rgbString, + rgbaString: rgbaString, + percentString: percentString, + percentaString: percentaString, + hslString: hslString, + hslaString: hslaString, + hwbString: hwbString, + keyword: keyword +}; -require(24)(Chart); -require(25)(Chart); +function getRgba(string) { + if (!string) { + return; + } + var abbr = /^#([a-fA-F0-9]{3,4})$/i, + hex = /^#([a-fA-F0-9]{6}([a-fA-F0-9]{2})?)$/i, + rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i, + per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i, + keyword = /(\w+)/; -require(56)(Chart); -require(54)(Chart); -require(55)(Chart); -require(57)(Chart); -require(58)(Chart); -require(59)(Chart); + var rgb = [0, 0, 0], + a = 1, + match = string.match(abbr), + hexAlpha = ""; + if (match) { + match = match[1]; + hexAlpha = match[3]; + for (var i = 0; i < rgb.length; i++) { + rgb[i] = parseInt(match[i] + match[i], 16); + } + if (hexAlpha) { + a = Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100; + } + } + else if (match = string.match(hex)) { + hexAlpha = match[2]; + match = match[1]; + for (var i = 0; i < rgb.length; i++) { + rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16); + } + if (hexAlpha) { + a = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100; + } + } + else if (match = string.match(rgba)) { + for (var i = 0; i < rgb.length; i++) { + rgb[i] = parseInt(match[i + 1]); + } + a = parseFloat(match[4]); + } + else if (match = string.match(per)) { + for (var i = 0; i < rgb.length; i++) { + rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55); + } + a = parseFloat(match[4]); + } + else if (match = string.match(keyword)) { + if (match[1] == "transparent") { + return [0, 0, 0, 0]; + } + rgb = colorName[match[1]]; + if (!rgb) { + return; + } + } -// Controllers must be loaded after elements -// See Chart.core.datasetController.dataElementType -require(15)(Chart); -require(16)(Chart); -require(17)(Chart); -require(18)(Chart); -require(19)(Chart); -require(20)(Chart); -require(21)(Chart); - -require(8)(Chart); -require(9)(Chart); -require(10)(Chart); -require(11)(Chart); -require(12)(Chart); -require(13)(Chart); -require(14)(Chart); - -// Loading built-in plugins -var plugins = require(50); -for (var k in plugins) { - if (plugins.hasOwnProperty(k)) { - Chart.plugins.register(plugins[k]); - } + for (var i = 0; i < rgb.length; i++) { + rgb[i] = scale(rgb[i], 0, 255); + } + if (!a && a != 0) { + a = 1; + } + else { + a = scale(a, 0, 1); + } + rgb[3] = a; + return rgb; } -Chart.platform.initialize(); - -module.exports = Chart; -if (typeof window !== 'undefined') { - window.Chart = Chart; +function getHsla(string) { + if (!string) { + return; + } + var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/; + var match = string.match(hsl); + if (match) { + var alpha = parseFloat(match[4]); + var h = scale(parseInt(match[1]), 0, 360), + s = scale(parseFloat(match[2]), 0, 100), + l = scale(parseFloat(match[3]), 0, 100), + a = scale(isNaN(alpha) ? 1 : alpha, 0, 1); + return [h, s, l, a]; + } } -// DEPRECATIONS - -/** - * Provided for backward compatibility, not available anymore - * @namespace Chart.Legend - * @deprecated since version 2.1.5 - * @todo remove at version 3 - * @private - */ -Chart.Legend = plugins.legend._element; - -/** - * Provided for backward compatibility, not available anymore - * @namespace Chart.Title - * @deprecated since version 2.1.5 - * @todo remove at version 3 - * @private - */ -Chart.Title = plugins.title._element; - -/** - * Provided for backward compatibility, use Chart.plugins instead - * @namespace Chart.pluginService - * @deprecated since version 2.1.5 - * @todo remove at version 3 - * @private - */ -Chart.pluginService = Chart.plugins; - -/** - * Provided for backward compatibility, inheriting from Chart.PlugingBase has no - * effect, instead simply create/register plugins via plain JavaScript objects. - * @interface Chart.PluginBase - * @deprecated since version 2.5.0 - * @todo remove at version 3 - * @private - */ -Chart.PluginBase = Chart.Element.extend({}); - -/** - * Provided for backward compatibility, use Chart.helpers.canvas instead. - * @namespace Chart.canvasHelpers - * @deprecated since version 2.6.0 - * @todo remove at version 3 - * @private - */ -Chart.canvasHelpers = Chart.helpers.canvas; - -/** - * Provided for backward compatibility, use Chart.layouts instead. - * @namespace Chart.layoutService - * @deprecated since version 2.8.0 - * @todo remove at version 3 - * @private - */ -Chart.layoutService = Chart.layouts; - -},{"10":10,"11":11,"12":12,"13":13,"14":14,"15":15,"16":16,"17":17,"18":18,"19":19,"20":20,"21":21,"22":22,"23":23,"24":24,"25":25,"26":26,"27":27,"28":28,"29":29,"30":30,"31":31,"32":32,"33":33,"34":34,"35":35,"36":36,"41":41,"46":46,"49":49,"50":50,"54":54,"55":55,"56":56,"57":57,"58":58,"59":59,"8":8,"9":9}],8:[function(require,module,exports){ -'use strict'; - -module.exports = function(Chart) { - - Chart.Bar = function(context, config) { - config.type = 'bar'; - - return new Chart(context, config); - }; - -}; - -},{}],9:[function(require,module,exports){ -'use strict'; - -module.exports = function(Chart) { - - Chart.Bubble = function(context, config) { - config.type = 'bubble'; - return new Chart(context, config); - }; - -}; - -},{}],10:[function(require,module,exports){ -'use strict'; - -module.exports = function(Chart) { - - Chart.Doughnut = function(context, config) { - config.type = 'doughnut'; - - return new Chart(context, config); - }; - -}; - -},{}],11:[function(require,module,exports){ -'use strict'; - -module.exports = function(Chart) { - - Chart.Line = function(context, config) { - config.type = 'line'; - - return new Chart(context, config); - }; - -}; - -},{}],12:[function(require,module,exports){ -'use strict'; - -module.exports = function(Chart) { - - Chart.PolarArea = function(context, config) { - config.type = 'polarArea'; - - return new Chart(context, config); - }; - -}; - -},{}],13:[function(require,module,exports){ -'use strict'; - -module.exports = function(Chart) { - - Chart.Radar = function(context, config) { - config.type = 'radar'; - - return new Chart(context, config); - }; - -}; - -},{}],14:[function(require,module,exports){ -'use strict'; - -module.exports = function(Chart) { - Chart.Scatter = function(context, config) { - config.type = 'scatter'; - return new Chart(context, config); - }; -}; - -},{}],15:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var elements = require(41); -var helpers = require(46); - -defaults._set('bar', { - hover: { - mode: 'label' - }, - - scales: { - xAxes: [{ - type: 'category', - - // Specific to Bar Controller - categoryPercentage: 0.8, - barPercentage: 0.9, - - // offset settings - offset: true, - - // grid line settings - gridLines: { - offsetGridLines: true - } - }], - - yAxes: [{ - type: 'linear' - }] - } -}); - -defaults._set('horizontalBar', { - hover: { - mode: 'index', - axis: 'y' - }, - - scales: { - xAxes: [{ - type: 'linear', - position: 'bottom' - }], - - yAxes: [{ - position: 'left', - type: 'category', - - // Specific to Horizontal Bar Controller - categoryPercentage: 0.8, - barPercentage: 0.9, - - // offset settings - offset: true, - - // grid line settings - gridLines: { - offsetGridLines: true - } - }] - }, - - elements: { - rectangle: { - borderSkipped: 'left' - } - }, - - tooltips: { - callbacks: { - title: function(item, data) { - // Pick first xLabel for now - var title = ''; - - if (item.length > 0) { - if (item[0].yLabel) { - title = item[0].yLabel; - } else if (data.labels.length > 0 && item[0].index < data.labels.length) { - title = data.labels[item[0].index]; - } - } - - return title; - }, - - label: function(item, data) { - var datasetLabel = data.datasets[item.datasetIndex].label || ''; - return datasetLabel + ': ' + item.xLabel; - } - }, - mode: 'index', - axis: 'y' - } -}); - -/** - * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap. - * @private - */ -function computeMinSampleSize(scale, pixels) { - var min = scale.isHorizontal() ? scale.width : scale.height; - var ticks = scale.getTicks(); - var prev, curr, i, ilen; - - for (i = 1, ilen = pixels.length; i < ilen; ++i) { - min = Math.min(min, pixels[i] - pixels[i - 1]); - } - - for (i = 0, ilen = ticks.length; i < ilen; ++i) { - curr = scale.getPixelForTick(i); - min = i > 0 ? Math.min(min, curr - prev) : min; - prev = curr; - } - - return min; +function getHwb(string) { + if (!string) { + return; + } + var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/; + var match = string.match(hwb); + if (match) { + var alpha = parseFloat(match[4]); + var h = scale(parseInt(match[1]), 0, 360), + w = scale(parseFloat(match[2]), 0, 100), + b = scale(parseFloat(match[3]), 0, 100), + a = scale(isNaN(alpha) ? 1 : alpha, 0, 1); + return [h, w, b, a]; + } } -/** - * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null, - * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This - * mode currently always generates bars equally sized (until we introduce scriptable options?). - * @private - */ -function computeFitCategoryTraits(index, ruler, options) { - var thickness = options.barThickness; - var count = ruler.stackCount; - var curr = ruler.pixels[index]; - var size, ratio; - - if (helpers.isNullOrUndef(thickness)) { - size = ruler.min * options.categoryPercentage; - ratio = options.barPercentage; - } else { - // When bar thickness is enforced, category and bar percentages are ignored. - // Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%') - // and deprecate barPercentage since this value is ignored when thickness is absolute. - size = thickness * count; - ratio = 1; - } - - return { - chunk: size / count, - ratio: ratio, - start: curr - (size / 2) - }; +function getRgb(string) { + var rgba = getRgba(string); + return rgba && rgba.slice(0, 3); } -/** - * Computes an "optimal" category that globally arranges bars side by side (no gap when - * percentage options are 1), based on the previous and following categories. This mode - * generates bars with different widths when data are not evenly spaced. - * @private - */ -function computeFlexCategoryTraits(index, ruler, options) { - var pixels = ruler.pixels; - var curr = pixels[index]; - var prev = index > 0 ? pixels[index - 1] : null; - var next = index < pixels.length - 1 ? pixels[index + 1] : null; - var percent = options.categoryPercentage; - var start, size; - - if (prev === null) { - // first data: its size is double based on the next point or, - // if it's also the last data, we use the scale end extremity. - prev = curr - (next === null ? ruler.end - curr : next - curr); - } - - if (next === null) { - // last data: its size is also double based on the previous point. - next = curr + curr - prev; - } - - start = curr - ((curr - prev) / 2) * percent; - size = ((next - prev) / 2) * percent; - - return { - chunk: size / ruler.stackCount, - ratio: options.barPercentage, - start: start - }; +function getHsl(string) { + var hsla = getHsla(string); + return hsla && hsla.slice(0, 3); } -module.exports = function(Chart) { +function getAlpha(string) { + var vals = getRgba(string); + if (vals) { + return vals[3]; + } + else if (vals = getHsla(string)) { + return vals[3]; + } + else if (vals = getHwb(string)) { + return vals[3]; + } +} - Chart.controllers.bar = Chart.DatasetController.extend({ +// generators +function hexString(rgba, a) { + var a = (a !== undefined && rgba.length === 3) ? a : rgba[3]; + return "#" + hexDouble(rgba[0]) + + hexDouble(rgba[1]) + + hexDouble(rgba[2]) + + ( + (a >= 0 && a < 1) + ? hexDouble(Math.round(a * 255)) + : "" + ); +} - dataElementType: elements.Rectangle, +function rgbString(rgba, alpha) { + if (alpha < 1 || (rgba[3] && rgba[3] < 1)) { + return rgbaString(rgba, alpha); + } + return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")"; +} - initialize: function() { - var me = this; - var meta; +function rgbaString(rgba, alpha) { + if (alpha === undefined) { + alpha = (rgba[3] !== undefined ? rgba[3] : 1); + } + return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + + ", " + alpha + ")"; +} - Chart.DatasetController.prototype.initialize.apply(me, arguments); +function percentString(rgba, alpha) { + if (alpha < 1 || (rgba[3] && rgba[3] < 1)) { + return percentaString(rgba, alpha); + } + var r = Math.round(rgba[0]/255 * 100), + g = Math.round(rgba[1]/255 * 100), + b = Math.round(rgba[2]/255 * 100); - meta = me.getMeta(); - meta.stack = me.getDataset().stack; - meta.bar = true; - }, + return "rgb(" + r + "%, " + g + "%, " + b + "%)"; +} - update: function(reset) { - var me = this; - var rects = me.getMeta().data; - var i, ilen; +function percentaString(rgba, alpha) { + var r = Math.round(rgba[0]/255 * 100), + g = Math.round(rgba[1]/255 * 100), + b = Math.round(rgba[2]/255 * 100); + return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")"; +} - me._ruler = me.getRuler(); +function hslString(hsla, alpha) { + if (alpha < 1 || (hsla[3] && hsla[3] < 1)) { + return hslaString(hsla, alpha); + } + return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)"; +} - for (i = 0, ilen = rects.length; i < ilen; ++i) { - me.updateElement(rects[i], i, reset); - } - }, +function hslaString(hsla, alpha) { + if (alpha === undefined) { + alpha = (hsla[3] !== undefined ? hsla[3] : 1); + } + return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, " + + alpha + ")"; +} - updateElement: function(rectangle, index, reset) { - var me = this; - var chart = me.chart; - var meta = me.getMeta(); - var dataset = me.getDataset(); - var custom = rectangle.custom || {}; - var rectangleOptions = chart.options.elements.rectangle; +// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax +// (hwb have alpha optional & 1 is default value) +function hwbString(hwb, alpha) { + if (alpha === undefined) { + alpha = (hwb[3] !== undefined ? hwb[3] : 1); + } + return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%" + + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")"; +} - rectangle._xScale = me.getScaleForId(meta.xAxisID); - rectangle._yScale = me.getScaleForId(meta.yAxisID); - rectangle._datasetIndex = me.index; - rectangle._index = index; +function keyword(rgb) { + return reverseNames[rgb.slice(0, 3)]; +} - rectangle._model = { - datasetLabel: dataset.label, - label: chart.data.labels[index], - borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleOptions.borderSkipped, - backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.backgroundColor, index, rectangleOptions.backgroundColor), - borderColor: custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.borderColor, index, rectangleOptions.borderColor), - borderWidth: custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.borderWidth, index, rectangleOptions.borderWidth) - }; +// helpers +function scale(num, min, max) { + return Math.min(Math.max(min, num), max); +} - me.updateElementGeometry(rectangle, index, reset); +function hexDouble(num) { + var str = num.toString(16).toUpperCase(); + return (str.length < 2) ? "0" + str : str; +} - rectangle.pivot(); - }, - /** - * @private - */ - updateElementGeometry: function(rectangle, index, reset) { - var me = this; - var model = rectangle._model; - var vscale = me.getValueScale(); - var base = vscale.getBasePixel(); - var horizontal = vscale.isHorizontal(); - var ruler = me._ruler || me.getRuler(); - var vpixels = me.calculateBarValuePixels(me.index, index); - var ipixels = me.calculateBarIndexPixels(me.index, index, ruler); +//create a list of reverse color names +var reverseNames = {}; +for (var name in colorName) { + reverseNames[colorName[name]] = name; +} - model.horizontal = horizontal; - model.base = reset ? base : vpixels.base; - model.x = horizontal ? reset ? base : vpixels.head : ipixels.center; - model.y = horizontal ? ipixels.center : reset ? base : vpixels.head; - model.height = horizontal ? ipixels.size : undefined; - model.width = horizontal ? undefined : ipixels.size; - }, +/* MIT license */ - /** - * @private - */ - getValueScaleId: function() { - return this.getMeta().yAxisID; - }, - /** - * @private - */ - getIndexScaleId: function() { - return this.getMeta().xAxisID; - }, - /** - * @private - */ - getValueScale: function() { - return this.getScaleForId(this.getValueScaleId()); - }, - - /** - * @private - */ - getIndexScale: function() { - return this.getScaleForId(this.getIndexScaleId()); - }, - - /** - * Returns the stacks based on groups and bar visibility. - * @param {Number} [last] - The dataset index - * @returns {Array} The stack list - * @private - */ - _getStacks: function(last) { - var me = this; - var chart = me.chart; - var scale = me.getIndexScale(); - var stacked = scale.options.stacked; - var ilen = last === undefined ? chart.data.datasets.length : last + 1; - var stacks = []; - var i, meta; - - for (i = 0; i < ilen; ++i) { - meta = chart.getDatasetMeta(i); - if (meta.bar && chart.isDatasetVisible(i) && - (stacked === false || - (stacked === true && stacks.indexOf(meta.stack) === -1) || - (stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) { - stacks.push(meta.stack); - } - } - - return stacks; - }, - - /** - * Returns the effective number of stacks based on groups and bar visibility. - * @private - */ - getStackCount: function() { - return this._getStacks().length; - }, - - /** - * Returns the stack index for the given dataset based on groups and bar visibility. - * @param {Number} [datasetIndex] - The dataset index - * @param {String} [name] - The stack name to find - * @returns {Number} The stack index - * @private - */ - getStackIndex: function(datasetIndex, name) { - var stacks = this._getStacks(datasetIndex); - var index = (name !== undefined) - ? stacks.indexOf(name) - : -1; // indexOf returns -1 if element is not present - - return (index === -1) - ? stacks.length - 1 - : index; - }, - - /** - * @private - */ - getRuler: function() { - var me = this; - var scale = me.getIndexScale(); - var stackCount = me.getStackCount(); - var datasetIndex = me.index; - var isHorizontal = scale.isHorizontal(); - var start = isHorizontal ? scale.left : scale.top; - var end = start + (isHorizontal ? scale.width : scale.height); - var pixels = []; - var i, ilen, min; - - for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) { - pixels.push(scale.getPixelForValue(null, i, datasetIndex)); - } - - min = helpers.isNullOrUndef(scale.options.barThickness) - ? computeMinSampleSize(scale, pixels) - : -1; - - return { - min: min, - pixels: pixels, - start: start, - end: end, - stackCount: stackCount, - scale: scale - }; - }, - - /** - * Note: pixel values are not clamped to the scale area. - * @private - */ - calculateBarValuePixels: function(datasetIndex, index) { - var me = this; - var chart = me.chart; - var meta = me.getMeta(); - var scale = me.getValueScale(); - var datasets = chart.data.datasets; - var value = scale.getRightValue(datasets[datasetIndex].data[index]); - var stacked = scale.options.stacked; - var stack = meta.stack; - var start = 0; - var i, imeta, ivalue, base, head, size; - - if (stacked || (stacked === undefined && stack !== undefined)) { - for (i = 0; i < datasetIndex; ++i) { - imeta = chart.getDatasetMeta(i); - - if (imeta.bar && - imeta.stack === stack && - imeta.controller.getValueScaleId() === scale.id && - chart.isDatasetVisible(i)) { - - ivalue = scale.getRightValue(datasets[i].data[index]); - if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) { - start += ivalue; - } - } - } - } - - base = scale.getPixelForValue(start); - head = scale.getPixelForValue(start + value); - size = (head - base) / 2; - - return { - size: size, - base: base, - head: head, - center: head + size / 2 - }; - }, - - /** - * @private - */ - calculateBarIndexPixels: function(datasetIndex, index, ruler) { - var me = this; - var options = ruler.scale.options; - var range = options.barThickness === 'flex' - ? computeFlexCategoryTraits(index, ruler, options) - : computeFitCategoryTraits(index, ruler, options); - - var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack); - var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2); - var size = Math.min( - helpers.valueOrDefault(options.maxBarThickness, Infinity), - range.chunk * range.ratio); - - return { - base: center - size / 2, - head: center + size / 2, - center: center, - size: size - }; - }, - - draw: function() { - var me = this; - var chart = me.chart; - var scale = me.getValueScale(); - var rects = me.getMeta().data; - var dataset = me.getDataset(); - var ilen = rects.length; - var i = 0; - - helpers.canvas.clipArea(chart.ctx, chart.chartArea); - - for (; i < ilen; ++i) { - if (!isNaN(scale.getRightValue(dataset.data[i]))) { - rects[i].draw(); - } - } - - helpers.canvas.unclipArea(chart.ctx); - }, - }); - - Chart.controllers.horizontalBar = Chart.controllers.bar.extend({ - /** - * @private - */ - getValueScaleId: function() { - return this.getMeta().xAxisID; - }, - - /** - * @private - */ - getIndexScaleId: function() { - return this.getMeta().yAxisID; - } - }); -}; - -},{"26":26,"41":41,"46":46}],16:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var elements = require(41); -var helpers = require(46); - -defaults._set('bubble', { - hover: { - mode: 'single' - }, - - scales: { - xAxes: [{ - type: 'linear', // bubble should probably use a linear scale by default - position: 'bottom', - id: 'x-axis-0' // need an ID so datasets can reference the scale - }], - yAxes: [{ - type: 'linear', - position: 'left', - id: 'y-axis-0' - }] - }, - - tooltips: { - callbacks: { - title: function() { - // Title doesn't make sense for scatter since we format the data as a point - return ''; - }, - label: function(item, data) { - var datasetLabel = data.datasets[item.datasetIndex].label || ''; - var dataPoint = data.datasets[item.datasetIndex].data[item.index]; - return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')'; - } - } +var Color = function (obj) { + if (obj instanceof Color) { + return obj; } -}); - - -module.exports = function(Chart) { - - Chart.controllers.bubble = Chart.DatasetController.extend({ - /** - * @protected - */ - dataElementType: elements.Point, - - /** - * @protected - */ - update: function(reset) { - var me = this; - var meta = me.getMeta(); - var points = meta.data; - - // Update Points - helpers.each(points, function(point, index) { - me.updateElement(point, index, reset); - }); - }, - - /** - * @protected - */ - updateElement: function(point, index, reset) { - var me = this; - var meta = me.getMeta(); - var custom = point.custom || {}; - var xScale = me.getScaleForId(meta.xAxisID); - var yScale = me.getScaleForId(meta.yAxisID); - var options = me._resolveElementOptions(point, index); - var data = me.getDataset().data[index]; - var dsIndex = me.index; - - var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex); - var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex); - - point._xScale = xScale; - point._yScale = yScale; - point._options = options; - point._datasetIndex = dsIndex; - point._index = index; - point._model = { - backgroundColor: options.backgroundColor, - borderColor: options.borderColor, - borderWidth: options.borderWidth, - hitRadius: options.hitRadius, - pointStyle: options.pointStyle, - rotation: options.rotation, - radius: reset ? 0 : options.radius, - skip: custom.skip || isNaN(x) || isNaN(y), - x: x, - y: y, - }; - - point.pivot(); - }, - - /** - * @protected - */ - setHoverStyle: function(point) { - var model = point._model; - var options = point._options; - point.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - radius: model.radius - }; - model.backgroundColor = helpers.valueOrDefault(options.hoverBackgroundColor, helpers.getHoverColor(options.backgroundColor)); - model.borderColor = helpers.valueOrDefault(options.hoverBorderColor, helpers.getHoverColor(options.borderColor)); - model.borderWidth = helpers.valueOrDefault(options.hoverBorderWidth, options.borderWidth); - model.radius = options.radius + options.hoverRadius; - }, - - /** - * @private - */ - _resolveElementOptions: function(point, index) { - var me = this; - var chart = me.chart; - var datasets = chart.data.datasets; - var dataset = datasets[me.index]; - var custom = point.custom || {}; - var options = chart.options.elements.point; - var resolve = helpers.options.resolve; - var data = dataset.data[index]; - var values = {}; - var i, ilen, key; - - // Scriptable options - var context = { - chart: chart, - dataIndex: index, - dataset: dataset, - datasetIndex: me.index - }; - - var keys = [ - 'backgroundColor', - 'borderColor', - 'borderWidth', - 'hoverBackgroundColor', - 'hoverBorderColor', - 'hoverBorderWidth', - 'hoverRadius', - 'hitRadius', - 'pointStyle', - 'rotation' - ]; - - for (i = 0, ilen = keys.length; i < ilen; ++i) { - key = keys[i]; - values[key] = resolve([ - custom[key], - dataset[key], - options[key] - ], context, index); - } - - // Custom radius resolution - values.radius = resolve([ - custom.radius, - data ? data.r : undefined, - dataset.radius, - options.radius - ], context, index); - return values; - } - }); -}; - -},{"26":26,"41":41,"46":46}],17:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var elements = require(41); -var helpers = require(46); - -defaults._set('doughnut', { - animation: { - // Boolean - Whether we animate the rotation of the Doughnut - animateRotate: true, - // Boolean - Whether we animate scaling the Doughnut from the centre - animateScale: false - }, - hover: { - mode: 'single' - }, - legendCallback: function(chart) { - var text = []; - text.push(''); - return text.join(''); - }, - legend: { - labels: { - generateLabels: function(chart) { - var data = chart.data; - if (data.labels.length && data.datasets.length) { - return data.labels.map(function(label, i) { - var meta = chart.getDatasetMeta(0); - var ds = data.datasets[0]; - var arc = meta.data[i]; - var custom = arc && arc.custom || {}; - var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault; - var arcOpts = chart.options.elements.arc; - var fill = custom.backgroundColor ? custom.backgroundColor : valueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor); - var stroke = custom.borderColor ? custom.borderColor : valueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor); - var bw = custom.borderWidth ? custom.borderWidth : valueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth); - - return { - text: label, - fillStyle: fill, - strokeStyle: stroke, - lineWidth: bw, - hidden: isNaN(ds.data[i]) || meta.data[i].hidden, - - // Extra data used for toggling the correct item - index: i - }; - }); - } - return []; - } - }, - - onClick: function(e, legendItem) { - var index = legendItem.index; - var chart = this.chart; - var i, ilen, meta; - - for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { - meta = chart.getDatasetMeta(i); - // toggle visibility of index if exists - if (meta.data[index]) { - meta.data[index].hidden = !meta.data[index].hidden; - } - } - - chart.update(); - } - }, - - // The percentage of the chart that we cut out of the middle. - cutoutPercentage: 50, - - // The rotation of the chart, where the first data arc begins. - rotation: Math.PI * -0.5, - - // The total circumference of the chart. - circumference: Math.PI * 2.0, - - // Need to override these to give a nice default - tooltips: { - callbacks: { - title: function() { - return ''; - }, - label: function(tooltipItem, data) { - var dataLabel = data.labels[tooltipItem.index]; - var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index]; - - if (helpers.isArray(dataLabel)) { - // show value on first line of multiline label - // need to clone because we are changing the value - dataLabel = dataLabel.slice(); - dataLabel[0] += value; - } else { - dataLabel += value; - } - - return dataLabel; - } - } - } -}); - -defaults._set('pie', helpers.clone(defaults.doughnut)); -defaults._set('pie', { - cutoutPercentage: 0 -}); - -module.exports = function(Chart) { - - Chart.controllers.doughnut = Chart.controllers.pie = Chart.DatasetController.extend({ - - dataElementType: elements.Arc, - - linkScales: helpers.noop, - - // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly - getRingIndex: function(datasetIndex) { - var ringIndex = 0; - - for (var j = 0; j < datasetIndex; ++j) { - if (this.chart.isDatasetVisible(j)) { - ++ringIndex; - } - } - - return ringIndex; - }, - - update: function(reset) { - var me = this; - var chart = me.chart; - var chartArea = chart.chartArea; - var opts = chart.options; - var arcOpts = opts.elements.arc; - var availableWidth = chartArea.right - chartArea.left - arcOpts.borderWidth; - var availableHeight = chartArea.bottom - chartArea.top - arcOpts.borderWidth; - var minSize = Math.min(availableWidth, availableHeight); - var offset = {x: 0, y: 0}; - var meta = me.getMeta(); - var cutoutPercentage = opts.cutoutPercentage; - var circumference = opts.circumference; - - // If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc - if (circumference < Math.PI * 2.0) { - var startAngle = opts.rotation % (Math.PI * 2.0); - startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0); - var endAngle = startAngle + circumference; - var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)}; - var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)}; - var contains0 = (startAngle <= 0 && endAngle >= 0) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle); - var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle); - var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle); - var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle); - var cutout = cutoutPercentage / 100.0; - var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))}; - var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))}; - var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5}; - minSize = Math.min(availableWidth / size.width, availableHeight / size.height); - offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5}; - } - - chart.borderWidth = me.getMaxBorderWidth(meta.data); - chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0); - chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0); - chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount(); - chart.offsetX = offset.x * chart.outerRadius; - chart.offsetY = offset.y * chart.outerRadius; - - meta.total = me.calculateTotal(); - - me.outerRadius = chart.outerRadius - (chart.radiusLength * me.getRingIndex(me.index)); - me.innerRadius = Math.max(me.outerRadius - chart.radiusLength, 0); - - helpers.each(meta.data, function(arc, index) { - me.updateElement(arc, index, reset); - }); - }, - - updateElement: function(arc, index, reset) { - var me = this; - var chart = me.chart; - var chartArea = chart.chartArea; - var opts = chart.options; - var animationOpts = opts.animation; - var centerX = (chartArea.left + chartArea.right) / 2; - var centerY = (chartArea.top + chartArea.bottom) / 2; - var startAngle = opts.rotation; // non reset case handled later - var endAngle = opts.rotation; // non reset case handled later - var dataset = me.getDataset(); - var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI)); - var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius; - var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius; - var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault; - - helpers.extend(arc, { - // Utility - _datasetIndex: me.index, - _index: index, - - // Desired view properties - _model: { - x: centerX + chart.offsetX, - y: centerY + chart.offsetY, - startAngle: startAngle, - endAngle: endAngle, - circumference: circumference, - outerRadius: outerRadius, - innerRadius: innerRadius, - label: valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index]) - } - }); - - var model = arc._model; - - // Resets the visual styles - var custom = arc.custom || {}; - var valueOrDefault = helpers.valueAtIndexOrDefault; - var elementOpts = this.chart.options.elements.arc; - model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor); - model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor); - model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth); - - // Set correct angles if not resetting - if (!reset || !animationOpts.animateRotate) { - if (index === 0) { - model.startAngle = opts.rotation; - } else { - model.startAngle = me.getMeta().data[index - 1]._model.endAngle; - } - - model.endAngle = model.startAngle + model.circumference; - } - - arc.pivot(); - }, - - calculateTotal: function() { - var dataset = this.getDataset(); - var meta = this.getMeta(); - var total = 0; - var value; - - helpers.each(meta.data, function(element, index) { - value = dataset.data[index]; - if (!isNaN(value) && !element.hidden) { - total += Math.abs(value); - } - }); - - /* if (total === 0) { - total = NaN; - }*/ - - return total; - }, - - calculateCircumference: function(value) { - var total = this.getMeta().total; - if (total > 0 && !isNaN(value)) { - return (Math.PI * 2.0) * (Math.abs(value) / total); - } - return 0; - }, - - // gets the max border or hover width to properly scale pie charts - getMaxBorderWidth: function(arcs) { - var max = 0; - var index = this.index; - var length = arcs.length; - var borderWidth; - var hoverWidth; - - for (var i = 0; i < length; i++) { - borderWidth = arcs[i]._model ? arcs[i]._model.borderWidth : 0; - hoverWidth = arcs[i]._chart ? arcs[i]._chart.config.data.datasets[index].hoverBorderWidth : 0; - - max = borderWidth > max ? borderWidth : max; - max = hoverWidth > max ? hoverWidth : max; - } - return max; - } - }); -}; - -},{"26":26,"41":41,"46":46}],18:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var elements = require(41); -var helpers = require(46); - -defaults._set('line', { - showLines: true, - spanGaps: false, - - hover: { - mode: 'label' - }, - - scales: { - xAxes: [{ - type: 'category', - id: 'x-axis-0' - }], - yAxes: [{ - type: 'linear', - id: 'y-axis-0' - }] - } -}); - -module.exports = function(Chart) { - - function lineEnabled(dataset, options) { - return helpers.valueOrDefault(dataset.showLine, options.showLines); + if (!(this instanceof Color)) { + return new Color(obj); } - Chart.controllers.line = Chart.DatasetController.extend({ + this.valid = false; + this.values = { + rgb: [0, 0, 0], + hsl: [0, 0, 0], + hsv: [0, 0, 0], + hwb: [0, 0, 0], + cmyk: [0, 0, 0, 0], + alpha: 1 + }; - datasetElementType: elements.Line, - - dataElementType: elements.Point, - - update: function(reset) { - var me = this; - var meta = me.getMeta(); - var line = meta.dataset; - var points = meta.data || []; - var options = me.chart.options; - var lineElementOptions = options.elements.line; - var scale = me.getScaleForId(meta.yAxisID); - var i, ilen, custom; - var dataset = me.getDataset(); - var showLine = lineEnabled(dataset, options); - - // Update Line - if (showLine) { - custom = line.custom || {}; - - // Compatibility: If the properties are defined with only the old name, use those values - if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) { - dataset.lineTension = dataset.tension; - } - - // Utility - line._scale = scale; - line._datasetIndex = me.index; - // Data - line._children = points; - // Model - line._model = { - // Appearance - // The default behavior of lines is to break at null values, according - // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158 - // This option gives lines the ability to span gaps - spanGaps: dataset.spanGaps ? dataset.spanGaps : options.spanGaps, - tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, lineElementOptions.tension), - backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor), - borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth), - borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor), - borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle), - borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash), - borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset), - borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle), - fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill), - steppedLine: custom.steppedLine ? custom.steppedLine : helpers.valueOrDefault(dataset.steppedLine, lineElementOptions.stepped), - cubicInterpolationMode: custom.cubicInterpolationMode ? custom.cubicInterpolationMode : helpers.valueOrDefault(dataset.cubicInterpolationMode, lineElementOptions.cubicInterpolationMode), - }; - - line.pivot(); - } - - // Update Points - for (i = 0, ilen = points.length; i < ilen; ++i) { - me.updateElement(points[i], i, reset); - } - - if (showLine && line._model.tension !== 0) { - me.updateBezierControlPoints(); - } - - // Now pivot the point for animation - for (i = 0, ilen = points.length; i < ilen; ++i) { - points[i].pivot(); - } - }, - - getPointBackgroundColor: function(point, index) { - var backgroundColor = this.chart.options.elements.point.backgroundColor; - var dataset = this.getDataset(); - var custom = point.custom || {}; - - if (custom.backgroundColor) { - backgroundColor = custom.backgroundColor; - } else if (dataset.pointBackgroundColor) { - backgroundColor = helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, backgroundColor); - } else if (dataset.backgroundColor) { - backgroundColor = dataset.backgroundColor; - } - - return backgroundColor; - }, - - getPointBorderColor: function(point, index) { - var borderColor = this.chart.options.elements.point.borderColor; - var dataset = this.getDataset(); - var custom = point.custom || {}; - - if (custom.borderColor) { - borderColor = custom.borderColor; - } else if (dataset.pointBorderColor) { - borderColor = helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, borderColor); - } else if (dataset.borderColor) { - borderColor = dataset.borderColor; - } - - return borderColor; - }, - - getPointBorderWidth: function(point, index) { - var borderWidth = this.chart.options.elements.point.borderWidth; - var dataset = this.getDataset(); - var custom = point.custom || {}; - - if (!isNaN(custom.borderWidth)) { - borderWidth = custom.borderWidth; - } else if (!isNaN(dataset.pointBorderWidth) || helpers.isArray(dataset.pointBorderWidth)) { - borderWidth = helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth); - } else if (!isNaN(dataset.borderWidth)) { - borderWidth = dataset.borderWidth; - } - - return borderWidth; - }, - - getPointRotation: function(point, index) { - var pointRotation = this.chart.options.elements.point.rotation; - var dataset = this.getDataset(); - var custom = point.custom || {}; - - if (!isNaN(custom.rotation)) { - pointRotation = custom.rotation; - } else if (!isNaN(dataset.pointRotation) || helpers.isArray(dataset.pointRotation)) { - pointRotation = helpers.valueAtIndexOrDefault(dataset.pointRotation, index, pointRotation); - } - return pointRotation; - }, - - updateElement: function(point, index, reset) { - var me = this; - var meta = me.getMeta(); - var custom = point.custom || {}; - var dataset = me.getDataset(); - var datasetIndex = me.index; - var value = dataset.data[index]; - var yScale = me.getScaleForId(meta.yAxisID); - var xScale = me.getScaleForId(meta.xAxisID); - var pointOptions = me.chart.options.elements.point; - var x, y; - - // Compatibility: If the properties are defined with only the old name, use those values - if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) { - dataset.pointRadius = dataset.radius; - } - if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) { - dataset.pointHitRadius = dataset.hitRadius; - } - - x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex); - y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex); - - // Utility - point._xScale = xScale; - point._yScale = yScale; - point._datasetIndex = datasetIndex; - point._index = index; - - // Desired view properties - point._model = { - x: x, - y: y, - skip: custom.skip || isNaN(x) || isNaN(y), - // Appearance - radius: custom.radius || helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointOptions.radius), - pointStyle: custom.pointStyle || helpers.valueAtIndexOrDefault(dataset.pointStyle, index, pointOptions.pointStyle), - rotation: me.getPointRotation(point, index), - backgroundColor: me.getPointBackgroundColor(point, index), - borderColor: me.getPointBorderColor(point, index), - borderWidth: me.getPointBorderWidth(point, index), - tension: meta.dataset._model ? meta.dataset._model.tension : 0, - steppedLine: meta.dataset._model ? meta.dataset._model.steppedLine : false, - // Tooltip - hitRadius: custom.hitRadius || helpers.valueAtIndexOrDefault(dataset.pointHitRadius, index, pointOptions.hitRadius) - }; - }, - - calculatePointY: function(value, index, datasetIndex) { - var me = this; - var chart = me.chart; - var meta = me.getMeta(); - var yScale = me.getScaleForId(meta.yAxisID); - var sumPos = 0; - var sumNeg = 0; - var i, ds, dsMeta; - - if (yScale.options.stacked) { - for (i = 0; i < datasetIndex; i++) { - ds = chart.data.datasets[i]; - dsMeta = chart.getDatasetMeta(i); - if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) { - var stackedRightValue = Number(yScale.getRightValue(ds.data[index])); - if (stackedRightValue < 0) { - sumNeg += stackedRightValue || 0; - } else { - sumPos += stackedRightValue || 0; - } - } - } - - var rightValue = Number(yScale.getRightValue(value)); - if (rightValue < 0) { - return yScale.getPixelForValue(sumNeg + rightValue); - } - return yScale.getPixelForValue(sumPos + rightValue); - } - - return yScale.getPixelForValue(value); - }, - - updateBezierControlPoints: function() { - var me = this; - var meta = me.getMeta(); - var area = me.chart.chartArea; - var points = (meta.data || []); - var i, ilen, point, model, controlPoints; - - // Only consider points that are drawn in case the spanGaps option is used - if (meta.dataset._model.spanGaps) { - points = points.filter(function(pt) { - return !pt._model.skip; - }); - } - - function capControlPoint(pt, min, max) { - return Math.max(Math.min(pt, max), min); - } - - if (meta.dataset._model.cubicInterpolationMode === 'monotone') { - helpers.splineCurveMonotone(points); - } else { - for (i = 0, ilen = points.length; i < ilen; ++i) { - point = points[i]; - model = point._model; - controlPoints = helpers.splineCurve( - helpers.previousItem(points, i)._model, - model, - helpers.nextItem(points, i)._model, - meta.dataset._model.tension - ); - model.controlPointPreviousX = controlPoints.previous.x; - model.controlPointPreviousY = controlPoints.previous.y; - model.controlPointNextX = controlPoints.next.x; - model.controlPointNextY = controlPoints.next.y; - } - } - - if (me.chart.options.elements.line.capBezierPoints) { - for (i = 0, ilen = points.length; i < ilen; ++i) { - model = points[i]._model; - model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right); - model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom); - model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right); - model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom); - } - } - }, - - draw: function() { - var me = this; - var chart = me.chart; - var meta = me.getMeta(); - var points = meta.data || []; - var area = chart.chartArea; - var ilen = points.length; - var halfBorderWidth; - var i = 0; - - if (lineEnabled(me.getDataset(), chart.options)) { - halfBorderWidth = (meta.dataset._model.borderWidth || 0) / 2; - - helpers.canvas.clipArea(chart.ctx, { - left: area.left, - right: area.right, - top: area.top - halfBorderWidth, - bottom: area.bottom + halfBorderWidth - }); - - meta.dataset.draw(); - - helpers.canvas.unclipArea(chart.ctx); - } - - // Draw the points - for (; i < ilen; ++i) { - points[i].draw(area); - } - }, - - setHoverStyle: function(element) { - // Point - var dataset = this.chart.data.datasets[element._datasetIndex]; - var index = element._index; - var custom = element.custom || {}; - var model = element._model; - - element.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - radius: model.radius - }; - - model.backgroundColor = custom.hoverBackgroundColor || helpers.valueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor)); - model.borderColor = custom.hoverBorderColor || helpers.valueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor)); - model.borderWidth = custom.hoverBorderWidth || helpers.valueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth); - model.radius = custom.hoverRadius || helpers.valueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius); - }, - }); -}; - -},{"26":26,"41":41,"46":46}],19:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var elements = require(41); -var helpers = require(46); - -defaults._set('polarArea', { - scale: { - type: 'radialLinear', - angleLines: { - display: false - }, - gridLines: { - circular: true - }, - pointLabels: { - display: false - }, - ticks: { - beginAtZero: true + // parse Color() argument + var vals; + if (typeof obj === 'string') { + vals = colorString.getRgba(obj); + if (vals) { + this.setValues('rgb', vals); + } else if (vals = colorString.getHsla(obj)) { + this.setValues('hsl', vals); + } else if (vals = colorString.getHwb(obj)) { + this.setValues('hwb', vals); } - }, - - // Boolean - Whether to animate the rotation of the chart - animation: { - animateRotate: true, - animateScale: true - }, - - startAngle: -0.5 * Math.PI, - legendCallback: function(chart) { - var text = []; - text.push(''); - return text.join(''); - }, - legend: { - labels: { - generateLabels: function(chart) { - var data = chart.data; - if (data.labels.length && data.datasets.length) { - return data.labels.map(function(label, i) { - var meta = chart.getDatasetMeta(0); - var ds = data.datasets[0]; - var arc = meta.data[i]; - var custom = arc.custom || {}; - var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault; - var arcOpts = chart.options.elements.arc; - var fill = custom.backgroundColor ? custom.backgroundColor : valueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor); - var stroke = custom.borderColor ? custom.borderColor : valueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor); - var bw = custom.borderWidth ? custom.borderWidth : valueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth); - - return { - text: label, - fillStyle: fill, - strokeStyle: stroke, - lineWidth: bw, - hidden: isNaN(ds.data[i]) || meta.data[i].hidden, - - // Extra data used for toggling the correct item - index: i - }; - }); - } - return []; - } - }, - - onClick: function(e, legendItem) { - var index = legendItem.index; - var chart = this.chart; - var i, ilen, meta; - - for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { - meta = chart.getDatasetMeta(i); - meta.data[index].hidden = !meta.data[index].hidden; - } - - chart.update(); - } - }, - - // Need to override these to give a nice default - tooltips: { - callbacks: { - title: function() { - return ''; - }, - label: function(item, data) { - return data.labels[item.index] + ': ' + item.yLabel; - } + } else if (typeof obj === 'object') { + vals = obj; + if (vals.r !== undefined || vals.red !== undefined) { + this.setValues('rgb', vals); + } else if (vals.l !== undefined || vals.lightness !== undefined) { + this.setValues('hsl', vals); + } else if (vals.v !== undefined || vals.value !== undefined) { + this.setValues('hsv', vals); + } else if (vals.w !== undefined || vals.whiteness !== undefined) { + this.setValues('hwb', vals); + } else if (vals.c !== undefined || vals.cyan !== undefined) { + this.setValues('cmyk', vals); } } -}); - -module.exports = function(Chart) { - - Chart.controllers.polarArea = Chart.DatasetController.extend({ - - dataElementType: elements.Arc, - - linkScales: helpers.noop, - - update: function(reset) { - var me = this; - var dataset = me.getDataset(); - var meta = me.getMeta(); - var start = me.chart.options.startAngle || 0; - var starts = me._starts = []; - var angles = me._angles = []; - var i, ilen, angle; - - me._updateRadius(); - - meta.count = me.countVisibleElements(); - - for (i = 0, ilen = dataset.data.length; i < ilen; i++) { - starts[i] = start; - angle = me._computeAngle(i); - angles[i] = angle; - start += angle; - } - - helpers.each(meta.data, function(arc, index) { - me.updateElement(arc, index, reset); - }); - }, - - /** - * @private - */ - _updateRadius: function() { - var me = this; - var chart = me.chart; - var chartArea = chart.chartArea; - var opts = chart.options; - var arcOpts = opts.elements.arc; - var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top); - - chart.outerRadius = Math.max((minSize - arcOpts.borderWidth / 2) / 2, 0); - chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0); - chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount(); - - me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index); - me.innerRadius = me.outerRadius - chart.radiusLength; - }, - - updateElement: function(arc, index, reset) { - var me = this; - var chart = me.chart; - var dataset = me.getDataset(); - var opts = chart.options; - var animationOpts = opts.animation; - var scale = chart.scale; - var labels = chart.data.labels; - - var centerX = scale.xCenter; - var centerY = scale.yCenter; - - // var negHalfPI = -0.5 * Math.PI; - var datasetStartAngle = opts.startAngle; - var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); - var startAngle = me._starts[index]; - var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]); - - var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); - - helpers.extend(arc, { - // Utility - _datasetIndex: me.index, - _index: index, - _scale: scale, - - // Desired view properties - _model: { - x: centerX, - y: centerY, - innerRadius: 0, - outerRadius: reset ? resetRadius : distance, - startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle, - endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle, - label: helpers.valueAtIndexOrDefault(labels, index, labels[index]) - } - }); - - // Apply border and fill style - var elementOpts = this.chart.options.elements.arc; - var custom = arc.custom || {}; - var valueOrDefault = helpers.valueAtIndexOrDefault; - var model = arc._model; - - model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor); - model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor); - model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth); - - arc.pivot(); - }, - - countVisibleElements: function() { - var dataset = this.getDataset(); - var meta = this.getMeta(); - var count = 0; - - helpers.each(meta.data, function(element, index) { - if (!isNaN(dataset.data[index]) && !element.hidden) { - count++; - } - }); - - return count; - }, - - /** - * @private - */ - _computeAngle: function(index) { - var me = this; - var count = this.getMeta().count; - var dataset = me.getDataset(); - var meta = me.getMeta(); - - if (isNaN(dataset.data[index]) || meta.data[index].hidden) { - return 0; - } - - // Scriptable options - var context = { - chart: me.chart, - dataIndex: index, - dataset: dataset, - datasetIndex: me.index - }; - - return helpers.options.resolve([ - me.chart.options.elements.arc.angle, - (2 * Math.PI) / count - ], context, index); - } - }); }; -},{"26":26,"41":41,"46":46}],20:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var elements = require(41); -var helpers = require(46); - -defaults._set('radar', { - scale: { - type: 'radialLinear' +Color.prototype = { + isValid: function () { + return this.valid; }, - elements: { - line: { - tension: 0 // no bezier in radar + rgb: function () { + return this.setSpace('rgb', arguments); + }, + hsl: function () { + return this.setSpace('hsl', arguments); + }, + hsv: function () { + return this.setSpace('hsv', arguments); + }, + hwb: function () { + return this.setSpace('hwb', arguments); + }, + cmyk: function () { + return this.setSpace('cmyk', arguments); + }, + + rgbArray: function () { + return this.values.rgb; + }, + hslArray: function () { + return this.values.hsl; + }, + hsvArray: function () { + return this.values.hsv; + }, + hwbArray: function () { + var values = this.values; + if (values.alpha !== 1) { + return values.hwb.concat([values.alpha]); } - } -}); - -module.exports = function(Chart) { - - Chart.controllers.radar = Chart.DatasetController.extend({ - - datasetElementType: elements.Line, - - dataElementType: elements.Point, - - linkScales: helpers.noop, - - update: function(reset) { - var me = this; - var meta = me.getMeta(); - var line = meta.dataset; - var points = meta.data; - var custom = line.custom || {}; - var dataset = me.getDataset(); - var lineElementOptions = me.chart.options.elements.line; - var scale = me.chart.scale; - - // Compatibility: If the properties are defined with only the old name, use those values - if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) { - dataset.lineTension = dataset.tension; - } - - helpers.extend(meta.dataset, { - // Utility - _datasetIndex: me.index, - _scale: scale, - // Data - _children: points, - _loop: true, - // Model - _model: { - // Appearance - tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, lineElementOptions.tension), - backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor), - borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth), - borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor), - fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill), - borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle), - borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash), - borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset), - borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle), - } - }); - - meta.dataset.pivot(); - - // Update Points - helpers.each(points, function(point, index) { - me.updateElement(point, index, reset); - }, me); - - // Update bezier control points - me.updateBezierControlPoints(); - }, - updateElement: function(point, index, reset) { - var me = this; - var custom = point.custom || {}; - var dataset = me.getDataset(); - var scale = me.chart.scale; - var pointElementOptions = me.chart.options.elements.point; - var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]); - - // Compatibility: If the properties are defined with only the old name, use those values - if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) { - dataset.pointRadius = dataset.radius; - } - if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) { - dataset.pointHitRadius = dataset.hitRadius; - } - - helpers.extend(point, { - // Utility - _datasetIndex: me.index, - _index: index, - _scale: scale, - - // Desired view properties - _model: { - x: reset ? scale.xCenter : pointPosition.x, // value not used in dataset scale, but we want a consistent API between scales - y: reset ? scale.yCenter : pointPosition.y, - - // Appearance - tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, me.chart.options.elements.line.tension), - radius: custom.radius ? custom.radius : helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius), - backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor), - borderColor: custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor), - borderWidth: custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth), - pointStyle: custom.pointStyle ? custom.pointStyle : helpers.valueAtIndexOrDefault(dataset.pointStyle, index, pointElementOptions.pointStyle), - rotation: custom.rotation ? custom.rotation : helpers.valueAtIndexOrDefault(dataset.pointRotation, index, pointElementOptions.rotation), - - // Tooltip - hitRadius: custom.hitRadius ? custom.hitRadius : helpers.valueAtIndexOrDefault(dataset.pointHitRadius, index, pointElementOptions.hitRadius) - } - }); - - point._model.skip = custom.skip ? custom.skip : (isNaN(point._model.x) || isNaN(point._model.y)); - }, - updateBezierControlPoints: function() { - var chartArea = this.chart.chartArea; - var meta = this.getMeta(); - - helpers.each(meta.data, function(point, index) { - var model = point._model; - var controlPoints = helpers.splineCurve( - helpers.previousItem(meta.data, index, true)._model, - model, - helpers.nextItem(meta.data, index, true)._model, - model.tension - ); - - // Prevent the bezier going outside of the bounds of the graph - model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, chartArea.right), chartArea.left); - model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, chartArea.bottom), chartArea.top); - - model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, chartArea.right), chartArea.left); - model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, chartArea.bottom), chartArea.top); - - // Now pivot the point for animation - point.pivot(); - }); - }, - - setHoverStyle: function(point) { - // Point - var dataset = this.chart.data.datasets[point._datasetIndex]; - var custom = point.custom || {}; - var index = point._index; - var model = point._model; - - point.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth, - radius: model.radius - }; - - model.radius = custom.hoverRadius ? custom.hoverRadius : helpers.valueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius); - model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.valueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor)); - model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.valueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor)); - model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.valueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth); - }, - }); -}; - -},{"26":26,"41":41,"46":46}],21:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); - -defaults._set('scatter', { - hover: { - mode: 'single' + return values.hwb; }, - - scales: { - xAxes: [{ - id: 'x-axis-1', // need an ID so datasets can reference the scale - type: 'linear', // scatter should not use a category axis - position: 'bottom' - }], - yAxes: [{ - id: 'y-axis-1', - type: 'linear', - position: 'left' - }] + cmykArray: function () { + return this.values.cmyk; }, - - showLines: false, - - tooltips: { - callbacks: { - title: function() { - return ''; // doesn't make sense for scatter since data are formatted as a point - }, - label: function(item) { - return '(' + item.xLabel + ', ' + item.yLabel + ')'; - } + rgbaArray: function () { + var values = this.values; + return values.rgb.concat([values.alpha]); + }, + hslaArray: function () { + var values = this.values; + return values.hsl.concat([values.alpha]); + }, + alpha: function (val) { + if (val === undefined) { + return this.values.alpha; } - } -}); - -module.exports = function(Chart) { - - // Scatter charts use line controllers - Chart.controllers.scatter = Chart.controllers.line; - -}; - -},{"26":26}],22:[function(require,module,exports){ -'use strict'; - -var Element = require(27); - -var exports = module.exports = Element.extend({ - chart: null, // the animation associated chart instance - currentStep: 0, // the current animation step - numSteps: 60, // default number of steps - easing: '', // the easing to use for this animation - render: null, // render function used by the animation service - - onAnimationProgress: null, // user specified callback to fire on each step of the animation - onAnimationComplete: null, // user specified callback to fire when the animation finishes -}); - -// DEPRECATIONS - -/** - * Provided for backward compatibility, use Chart.Animation instead - * @prop Chart.Animation#animationObject - * @deprecated since version 2.6.0 - * @todo remove at version 3 - */ -Object.defineProperty(exports.prototype, 'animationObject', { - get: function() { + this.setValues('alpha', val); return this; - } -}); - -/** - * Provided for backward compatibility, use Chart.Animation#chart instead - * @prop Chart.Animation#chartInstance - * @deprecated since version 2.6.0 - * @todo remove at version 3 - */ -Object.defineProperty(exports.prototype, 'chartInstance', { - get: function() { - return this.chart; - }, - set: function(value) { - this.chart = value; - } -}); - -},{"27":27}],23:[function(require,module,exports){ -/* global window: false */ -'use strict'; - -var defaults = require(26); -var helpers = require(46); - -defaults._set('global', { - animation: { - duration: 1000, - easing: 'easeOutQuart', - onProgress: helpers.noop, - onComplete: helpers.noop - } -}); - -module.exports = { - frameDuration: 17, - animations: [], - dropFrames: 0, - request: null, - - /** - * @param {Chart} chart - The chart to animate. - * @param {Chart.Animation} animation - The animation that we will animate. - * @param {Number} duration - The animation duration in ms. - * @param {Boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions - */ - addAnimation: function(chart, animation, duration, lazy) { - var animations = this.animations; - var i, ilen; - - animation.chart = chart; - - if (!lazy) { - chart.animating = true; - } - - for (i = 0, ilen = animations.length; i < ilen; ++i) { - if (animations[i].chart === chart) { - animations[i] = animation; - return; - } - } - - animations.push(animation); - - // If there are no animations queued, manually kickstart a digest, for lack of a better word - if (animations.length === 1) { - this.requestAnimationFrame(); - } }, - cancelAnimation: function(chart) { - var index = helpers.findIndex(this.animations, function(animation) { - return animation.chart === chart; - }); - - if (index !== -1) { - this.animations.splice(index, 1); - chart.animating = false; + red: function (val) { + return this.setChannel('rgb', 0, val); + }, + green: function (val) { + return this.setChannel('rgb', 1, val); + }, + blue: function (val) { + return this.setChannel('rgb', 2, val); + }, + hue: function (val) { + if (val) { + val %= 360; + val = val < 0 ? 360 + val : val; } + return this.setChannel('hsl', 0, val); + }, + saturation: function (val) { + return this.setChannel('hsl', 1, val); + }, + lightness: function (val) { + return this.setChannel('hsl', 2, val); + }, + saturationv: function (val) { + return this.setChannel('hsv', 1, val); + }, + whiteness: function (val) { + return this.setChannel('hwb', 1, val); + }, + blackness: function (val) { + return this.setChannel('hwb', 2, val); + }, + value: function (val) { + return this.setChannel('hsv', 2, val); + }, + cyan: function (val) { + return this.setChannel('cmyk', 0, val); + }, + magenta: function (val) { + return this.setChannel('cmyk', 1, val); + }, + yellow: function (val) { + return this.setChannel('cmyk', 2, val); + }, + black: function (val) { + return this.setChannel('cmyk', 3, val); }, - requestAnimationFrame: function() { - var me = this; - if (me.request === null) { - // Skip animation frame requests until the active one is executed. - // This can happen when processing mouse events, e.g. 'mousemove' - // and 'mouseout' events will trigger multiple renders. - me.request = helpers.requestAnimFrame.call(window, function() { - me.request = null; - me.startDigest(); - }); - } + hexString: function () { + return colorString.hexString(this.values.rgb); + }, + rgbString: function () { + return colorString.rgbString(this.values.rgb, this.values.alpha); + }, + rgbaString: function () { + return colorString.rgbaString(this.values.rgb, this.values.alpha); + }, + percentString: function () { + return colorString.percentString(this.values.rgb, this.values.alpha); + }, + hslString: function () { + return colorString.hslString(this.values.hsl, this.values.alpha); + }, + hslaString: function () { + return colorString.hslaString(this.values.hsl, this.values.alpha); + }, + hwbString: function () { + return colorString.hwbString(this.values.hwb, this.values.alpha); + }, + keyword: function () { + return colorString.keyword(this.values.rgb, this.values.alpha); }, - /** - * @private - */ - startDigest: function() { - var me = this; - var startTime = Date.now(); - var framesToDrop = 0; - - if (me.dropFrames > 1) { - framesToDrop = Math.floor(me.dropFrames); - me.dropFrames = me.dropFrames % 1; - } - - me.advance(1 + framesToDrop); - - var endTime = Date.now(); - - me.dropFrames += (endTime - startTime) / me.frameDuration; - - // Do we have more stuff to animate? - if (me.animations.length > 0) { - me.requestAnimationFrame(); - } + rgbNumber: function () { + var rgb = this.values.rgb; + return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2]; }, - /** - * @private - */ - advance: function(count) { - var animations = this.animations; - var animation, chart; - var i = 0; - - while (i < animations.length) { - animation = animations[i]; - chart = animation.chart; - - animation.currentStep = (animation.currentStep || 0) + count; - animation.currentStep = Math.min(animation.currentStep, animation.numSteps); - - helpers.callback(animation.render, [chart, animation], chart); - helpers.callback(animation.onAnimationProgress, [animation], chart); - - if (animation.currentStep >= animation.numSteps) { - helpers.callback(animation.onAnimationComplete, [animation], chart); - chart.animating = false; - animations.splice(i, 1); - } else { - ++i; - } + luminosity: function () { + // http://www.w3.org/TR/WCAG20/#relativeluminancedef + var rgb = this.values.rgb; + var lum = []; + for (var i = 0; i < rgb.length; i++) { + var chan = rgb[i] / 255; + lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4); } - } -}; - -},{"26":26,"46":46}],24:[function(require,module,exports){ -'use strict'; - -var Animation = require(22); -var animations = require(23); -var defaults = require(26); -var helpers = require(46); -var Interaction = require(29); -var layouts = require(31); -var platform = require(49); -var plugins = require(32); -var scaleService = require(34); -var Tooltip = require(36); - -module.exports = function(Chart) { - - // Create a dictionary of chart types, to allow for extension of existing types - Chart.types = {}; - - // Store a reference to each instance - allowing us to globally resize chart instances on window resize. - // Destroy method on the chart will remove the instance of the chart from this reference. - Chart.instances = {}; - - // Controllers available for dataset visualization eg. bar, line, slice, etc. - Chart.controllers = {}; - - /** - * Initializes the given config with global and chart default values. - */ - function initConfig(config) { - config = config || {}; - - // Do NOT use configMerge() for the data object because this method merges arrays - // and so would change references to labels and datasets, preventing data updates. - var data = config.data = config.data || {}; - data.datasets = data.datasets || []; - data.labels = data.labels || []; - - config.options = helpers.configMerge( - defaults.global, - defaults[config.type], - config.options || {}); - - return config; - } - - /** - * Updates the config of the chart - * @param chart {Chart} chart to update the options for - */ - function updateConfig(chart) { - var newOptions = chart.options; - - helpers.each(chart.scales, function(scale) { - layouts.removeBox(chart, scale); - }); - - newOptions = helpers.configMerge( - Chart.defaults.global, - Chart.defaults[chart.config.type], - newOptions); - - chart.options = chart.config.options = newOptions; - chart.ensureScalesHaveIDs(); - chart.buildOrUpdateScales(); - // Tooltip - chart.tooltip._options = newOptions.tooltips; - chart.tooltip.initialize(); - } - - function positionIsHorizontal(position) { - return position === 'top' || position === 'bottom'; - } - - helpers.extend(Chart.prototype, /** @lends Chart */ { - /** - * @private - */ - construct: function(item, config) { - var me = this; - - config = initConfig(config); - - var context = platform.acquireContext(item, config); - var canvas = context && context.canvas; - var height = canvas && canvas.height; - var width = canvas && canvas.width; - - me.id = helpers.uid(); - me.ctx = context; - me.canvas = canvas; - me.config = config; - me.width = width; - me.height = height; - me.aspectRatio = height ? width / height : null; - me.options = config.options; - me._bufferedRender = false; - - /** - * Provided for backward compatibility, Chart and Chart.Controller have been merged, - * the "instance" still need to be defined since it might be called from plugins. - * @prop Chart#chart - * @deprecated since version 2.6.0 - * @todo remove at version 3 - * @private - */ - me.chart = me; - me.controller = me; // chart.chart.controller #inception - - // Add the chart instance to the global namespace - Chart.instances[me.id] = me; - - // Define alias to the config data: `chart.data === chart.config.data` - Object.defineProperty(me, 'data', { - get: function() { - return me.config.data; - }, - set: function(value) { - me.config.data = value; - } - }); - - if (!context || !canvas) { - // The given item is not a compatible context2d element, let's return before finalizing - // the chart initialization but after setting basic chart / controller properties that - // can help to figure out that the chart is not valid (e.g chart.canvas !== null); - // https://github.com/chartjs/Chart.js/issues/2807 - console.error("Failed to create chart: can't acquire context from the given item"); - return; - } - - me.initialize(); - me.update(); - }, - - /** - * @private - */ - initialize: function() { - var me = this; - - // Before init plugin notification - plugins.notify(me, 'beforeInit'); - - helpers.retinaScale(me, me.options.devicePixelRatio); - - me.bindEvents(); - - if (me.options.responsive) { - // Initial resize before chart draws (must be silent to preserve initial animations). - me.resize(true); - } - - // Make sure scales have IDs and are built before we build any controllers. - me.ensureScalesHaveIDs(); - me.buildOrUpdateScales(); - me.initToolTip(); - - // After init plugin notification - plugins.notify(me, 'afterInit'); - - return me; - }, - - clear: function() { - helpers.canvas.clear(this); - return this; - }, - - stop: function() { - // Stops any current animation loop occurring - animations.cancelAnimation(this); - return this; - }, - - resize: function(silent) { - var me = this; - var options = me.options; - var canvas = me.canvas; - var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null; - - // the canvas render width and height will be casted to integers so make sure that - // the canvas display style uses the same integer values to avoid blurring effect. - - // Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed - var newWidth = Math.max(0, Math.floor(helpers.getMaximumWidth(canvas))); - var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers.getMaximumHeight(canvas))); - - if (me.width === newWidth && me.height === newHeight) { - return; - } - - canvas.width = me.width = newWidth; - canvas.height = me.height = newHeight; - canvas.style.width = newWidth + 'px'; - canvas.style.height = newHeight + 'px'; - - helpers.retinaScale(me, options.devicePixelRatio); - - if (!silent) { - // Notify any plugins about the resize - var newSize = {width: newWidth, height: newHeight}; - plugins.notify(me, 'resize', [newSize]); - - // Notify of resize - if (me.options.onResize) { - me.options.onResize(me, newSize); - } - - me.stop(); - me.update({ - duration: me.options.responsiveAnimationDuration - }); - } - }, - - ensureScalesHaveIDs: function() { - var options = this.options; - var scalesOptions = options.scales || {}; - var scaleOptions = options.scale; - - helpers.each(scalesOptions.xAxes, function(xAxisOptions, index) { - xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index); - }); - - helpers.each(scalesOptions.yAxes, function(yAxisOptions, index) { - yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index); - }); - - if (scaleOptions) { - scaleOptions.id = scaleOptions.id || 'scale'; - } - }, - - /** - * Builds a map of scale ID to scale object for future lookup. - */ - buildOrUpdateScales: function() { - var me = this; - var options = me.options; - var scales = me.scales || {}; - var items = []; - var updated = Object.keys(scales).reduce(function(obj, id) { - obj[id] = false; - return obj; - }, {}); - - if (options.scales) { - items = items.concat( - (options.scales.xAxes || []).map(function(xAxisOptions) { - return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'}; - }), - (options.scales.yAxes || []).map(function(yAxisOptions) { - return {options: yAxisOptions, dtype: 'linear', dposition: 'left'}; - }) - ); - } - - if (options.scale) { - items.push({ - options: options.scale, - dtype: 'radialLinear', - isDefault: true, - dposition: 'chartArea' - }); - } - - helpers.each(items, function(item) { - var scaleOptions = item.options; - var id = scaleOptions.id; - var scaleType = helpers.valueOrDefault(scaleOptions.type, item.dtype); - - if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) { - scaleOptions.position = item.dposition; - } - - updated[id] = true; - var scale = null; - if (id in scales && scales[id].type === scaleType) { - scale = scales[id]; - scale.options = scaleOptions; - scale.ctx = me.ctx; - scale.chart = me; - } else { - var scaleClass = scaleService.getScaleConstructor(scaleType); - if (!scaleClass) { - return; - } - scale = new scaleClass({ - id: id, - type: scaleType, - options: scaleOptions, - ctx: me.ctx, - chart: me - }); - scales[scale.id] = scale; - } - - scale.mergeTicksOptions(); - - // TODO(SB): I think we should be able to remove this custom case (options.scale) - // and consider it as a regular scale part of the "scales"" map only! This would - // make the logic easier and remove some useless? custom code. - if (item.isDefault) { - me.scale = scale; - } - }); - // clear up discarded scales - helpers.each(updated, function(hasUpdated, id) { - if (!hasUpdated) { - delete scales[id]; - } - }); - - me.scales = scales; - - scaleService.addScalesToLayout(this); - }, - - buildOrUpdateControllers: function() { - var me = this; - var types = []; - var newControllers = []; - - helpers.each(me.data.datasets, function(dataset, datasetIndex) { - var meta = me.getDatasetMeta(datasetIndex); - var type = dataset.type || me.config.type; - - if (meta.type && meta.type !== type) { - me.destroyDatasetMeta(datasetIndex); - meta = me.getDatasetMeta(datasetIndex); - } - meta.type = type; - - types.push(meta.type); - - if (meta.controller) { - meta.controller.updateIndex(datasetIndex); - meta.controller.linkScales(); - } else { - var ControllerClass = Chart.controllers[meta.type]; - if (ControllerClass === undefined) { - throw new Error('"' + meta.type + '" is not a chart type.'); - } - - meta.controller = new ControllerClass(me, datasetIndex); - newControllers.push(meta.controller); - } - }, me); - - return newControllers; - }, - - /** - * Reset the elements of all datasets - * @private - */ - resetElements: function() { - var me = this; - helpers.each(me.data.datasets, function(dataset, datasetIndex) { - me.getDatasetMeta(datasetIndex).controller.reset(); - }, me); - }, - - /** - * Resets the chart back to it's state before the initial animation - */ - reset: function() { - this.resetElements(); - this.tooltip.initialize(); - }, - - update: function(config) { - var me = this; - - if (!config || typeof config !== 'object') { - // backwards compatibility - config = { - duration: config, - lazy: arguments[1] - }; - } - - updateConfig(me); - - // plugins options references might have change, let's invalidate the cache - // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 - plugins._invalidate(me); - - if (plugins.notify(me, 'beforeUpdate') === false) { - return; - } - - // In case the entire data object changed - me.tooltip._data = me.data; - - // Make sure dataset controllers are updated and new controllers are reset - var newControllers = me.buildOrUpdateControllers(); - - // Make sure all dataset controllers have correct meta data counts - helpers.each(me.data.datasets, function(dataset, datasetIndex) { - me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements(); - }, me); - - me.updateLayout(); - - // Can only reset the new controllers after the scales have been updated - if (me.options.animation && me.options.animation.duration) { - helpers.each(newControllers, function(controller) { - controller.reset(); - }); - } - - me.updateDatasets(); - - // Need to reset tooltip in case it is displayed with elements that are removed - // after update. - me.tooltip.initialize(); - - // Last active contains items that were previously in the tooltip. - // When we reset the tooltip, we need to clear it - me.lastActive = []; - - // Do this before render so that any plugins that need final scale updates can use it - plugins.notify(me, 'afterUpdate'); - - if (me._bufferedRender) { - me._bufferedRequest = { - duration: config.duration, - easing: config.easing, - lazy: config.lazy - }; - } else { - me.render(config); - } - }, - - /** - * Updates the chart layout unless a plugin returns `false` to the `beforeLayout` - * hook, in which case, plugins will not be called on `afterLayout`. - * @private - */ - updateLayout: function() { - var me = this; - - if (plugins.notify(me, 'beforeLayout') === false) { - return; - } - - layouts.update(this, this.width, this.height); - - /** - * Provided for backward compatibility, use `afterLayout` instead. - * @method IPlugin#afterScaleUpdate - * @deprecated since version 2.5.0 - * @todo remove at version 3 - * @private - */ - plugins.notify(me, 'afterScaleUpdate'); - plugins.notify(me, 'afterLayout'); - }, - - /** - * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate` - * hook, in which case, plugins will not be called on `afterDatasetsUpdate`. - * @private - */ - updateDatasets: function() { - var me = this; - - if (plugins.notify(me, 'beforeDatasetsUpdate') === false) { - return; - } - - for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { - me.updateDataset(i); - } - - plugins.notify(me, 'afterDatasetsUpdate'); - }, - - /** - * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate` - * hook, in which case, plugins will not be called on `afterDatasetUpdate`. - * @private - */ - updateDataset: function(index) { - var me = this; - var meta = me.getDatasetMeta(index); - var args = { - meta: meta, - index: index - }; - - if (plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) { - return; - } - - meta.controller.update(); - - plugins.notify(me, 'afterDatasetUpdate', [args]); - }, - - render: function(config) { - var me = this; - - if (!config || typeof config !== 'object') { - // backwards compatibility - config = { - duration: config, - lazy: arguments[1] - }; - } - - var duration = config.duration; - var lazy = config.lazy; - - if (plugins.notify(me, 'beforeRender') === false) { - return; - } - - var animationOptions = me.options.animation; - var onComplete = function(animation) { - plugins.notify(me, 'afterRender'); - helpers.callback(animationOptions && animationOptions.onComplete, [animation], me); - }; - - if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) { - var animation = new Animation({ - numSteps: (duration || animationOptions.duration) / 16.66, // 60 fps - easing: config.easing || animationOptions.easing, - - render: function(chart, animationObject) { - var easingFunction = helpers.easing.effects[animationObject.easing]; - var currentStep = animationObject.currentStep; - var stepDecimal = currentStep / animationObject.numSteps; - - chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep); - }, - - onAnimationProgress: animationOptions.onProgress, - onAnimationComplete: onComplete - }); - - animations.addAnimation(me, animation, duration, lazy); - } else { - me.draw(); - - // See https://github.com/chartjs/Chart.js/issues/3781 - onComplete(new Animation({numSteps: 0, chart: me})); - } - - return me; - }, - - draw: function(easingValue) { - var me = this; - - me.clear(); - - if (helpers.isNullOrUndef(easingValue)) { - easingValue = 1; - } - - me.transition(easingValue); - - if (me.width <= 0 || me.height <= 0) { - return; - } - - if (plugins.notify(me, 'beforeDraw', [easingValue]) === false) { - return; - } - - // Draw all the scales - helpers.each(me.boxes, function(box) { - box.draw(me.chartArea); - }, me); - - if (me.scale) { - me.scale.draw(); - } - - me.drawDatasets(easingValue); - me._drawTooltip(easingValue); - - plugins.notify(me, 'afterDraw', [easingValue]); - }, - - /** - * @private - */ - transition: function(easingValue) { - var me = this; - - for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) { - if (me.isDatasetVisible(i)) { - me.getDatasetMeta(i).controller.transition(easingValue); - } - } - - me.tooltip.transition(easingValue); - }, - - /** - * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw` - * hook, in which case, plugins will not be called on `afterDatasetsDraw`. - * @private - */ - drawDatasets: function(easingValue) { - var me = this; - - if (plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) { - return; - } - - // Draw datasets reversed to support proper line stacking - for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) { - if (me.isDatasetVisible(i)) { - me.drawDataset(i, easingValue); - } - } - - plugins.notify(me, 'afterDatasetsDraw', [easingValue]); - }, - - /** - * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw` - * hook, in which case, plugins will not be called on `afterDatasetDraw`. - * @private - */ - drawDataset: function(index, easingValue) { - var me = this; - var meta = me.getDatasetMeta(index); - var args = { - meta: meta, - index: index, - easingValue: easingValue - }; - - if (plugins.notify(me, 'beforeDatasetDraw', [args]) === false) { - return; - } - - meta.controller.draw(easingValue); - - plugins.notify(me, 'afterDatasetDraw', [args]); - }, - - /** - * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw` - * hook, in which case, plugins will not be called on `afterTooltipDraw`. - * @private - */ - _drawTooltip: function(easingValue) { - var me = this; - var tooltip = me.tooltip; - var args = { - tooltip: tooltip, - easingValue: easingValue - }; - - if (plugins.notify(me, 'beforeTooltipDraw', [args]) === false) { - return; - } - - tooltip.draw(); - - plugins.notify(me, 'afterTooltipDraw', [args]); - }, - - // Get the single element that was clicked on - // @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw - getElementAtEvent: function(e) { - return Interaction.modes.single(this, e); - }, - - getElementsAtEvent: function(e) { - return Interaction.modes.label(this, e, {intersect: true}); - }, - - getElementsAtXAxis: function(e) { - return Interaction.modes['x-axis'](this, e, {intersect: true}); - }, - - getElementsAtEventForMode: function(e, mode, options) { - var method = Interaction.modes[mode]; - if (typeof method === 'function') { - return method(this, e, options); - } - - return []; - }, - - getDatasetAtEvent: function(e) { - return Interaction.modes.dataset(this, e, {intersect: true}); - }, - - getDatasetMeta: function(datasetIndex) { - var me = this; - var dataset = me.data.datasets[datasetIndex]; - if (!dataset._meta) { - dataset._meta = {}; - } - - var meta = dataset._meta[me.id]; - if (!meta) { - meta = dataset._meta[me.id] = { - type: null, - data: [], - dataset: null, - controller: null, - hidden: null, // See isDatasetVisible() comment - xAxisID: null, - yAxisID: null - }; - } - - return meta; - }, - - getVisibleDatasetCount: function() { - var count = 0; - for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) { - if (this.isDatasetVisible(i)) { - count++; - } - } - return count; - }, - - isDatasetVisible: function(datasetIndex) { - var meta = this.getDatasetMeta(datasetIndex); - - // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false, - // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned. - return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden; - }, - - generateLegend: function() { - return this.options.legendCallback(this); - }, - - /** - * @private - */ - destroyDatasetMeta: function(datasetIndex) { - var id = this.id; - var dataset = this.data.datasets[datasetIndex]; - var meta = dataset._meta && dataset._meta[id]; - - if (meta) { - meta.controller.destroy(); - delete dataset._meta[id]; - } - }, - - destroy: function() { - var me = this; - var canvas = me.canvas; - var i, ilen; - - me.stop(); - - // dataset controllers need to cleanup associated data - for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { - me.destroyDatasetMeta(i); - } - - if (canvas) { - me.unbindEvents(); - helpers.canvas.clear(me); - platform.releaseContext(me.ctx); - me.canvas = null; - me.ctx = null; - } - - plugins.notify(me, 'destroy'); - - delete Chart.instances[me.id]; - }, - - toBase64Image: function() { - return this.canvas.toDataURL.apply(this.canvas, arguments); - }, - - initToolTip: function() { - var me = this; - me.tooltip = new Tooltip({ - _chart: me, - _chartInstance: me, // deprecated, backward compatibility - _data: me.data, - _options: me.options.tooltips - }, me); - }, - - /** - * @private - */ - bindEvents: function() { - var me = this; - var listeners = me._listeners = {}; - var listener = function() { - me.eventHandler.apply(me, arguments); - }; - - helpers.each(me.options.events, function(type) { - platform.addEventListener(me, type, listener); - listeners[type] = listener; - }); - - // Elements used to detect size change should not be injected for non responsive charts. - // See https://github.com/chartjs/Chart.js/issues/2210 - if (me.options.responsive) { - listener = function() { - me.resize(); - }; - - platform.addEventListener(me, 'resize', listener); - listeners.resize = listener; - } - }, - - /** - * @private - */ - unbindEvents: function() { - var me = this; - var listeners = me._listeners; - if (!listeners) { - return; - } - - delete me._listeners; - helpers.each(listeners, function(listener, type) { - platform.removeEventListener(me, type, listener); - }); - }, - - updateHoverStyle: function(elements, mode, enabled) { - var method = enabled ? 'setHoverStyle' : 'removeHoverStyle'; - var element, i, ilen; - - for (i = 0, ilen = elements.length; i < ilen; ++i) { - element = elements[i]; - if (element) { - this.getDatasetMeta(element._datasetIndex).controller[method](element); - } - } - }, - - /** - * @private - */ - eventHandler: function(e) { - var me = this; - var tooltip = me.tooltip; - - if (plugins.notify(me, 'beforeEvent', [e]) === false) { - return; - } - - // Buffer any update calls so that renders do not occur - me._bufferedRender = true; - me._bufferedRequest = null; - - var changed = me.handleEvent(e); - // for smooth tooltip animations issue #4989 - // the tooltip should be the source of change - // Animation check workaround: - // tooltip._start will be null when tooltip isn't animating - if (tooltip) { - changed = tooltip._start - ? tooltip.handleEvent(e) - : changed | tooltip.handleEvent(e); - } - - plugins.notify(me, 'afterEvent', [e]); - - var bufferedRequest = me._bufferedRequest; - if (bufferedRequest) { - // If we have an update that was triggered, we need to do a normal render - me.render(bufferedRequest); - } else if (changed && !me.animating) { - // If entering, leaving, or changing elements, animate the change via pivot - me.stop(); - - // We only need to render at this point. Updating will cause scales to be - // recomputed generating flicker & using more memory than necessary. - me.render({ - duration: me.options.hover.animationDuration, - lazy: true - }); - } - - me._bufferedRender = false; - me._bufferedRequest = null; - - return me; - }, - - /** - * Handle an event - * @private - * @param {IEvent} event the event to handle - * @return {Boolean} true if the chart needs to re-render - */ - handleEvent: function(e) { - var me = this; - var options = me.options || {}; - var hoverOptions = options.hover; - var changed = false; - - me.lastActive = me.lastActive || []; - - // Find Active Elements for hover and tooltips - if (e.type === 'mouseout') { - me.active = []; - } else { - me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions); - } - - // Invoke onHover hook - // Need to call with native event here to not break backwards compatibility - helpers.callback(options.onHover || options.hover.onHover, [e.native, me.active], me); - - if (e.type === 'mouseup' || e.type === 'click') { - if (options.onClick) { - // Use e.native here for backwards compatibility - options.onClick.call(me, e.native, me.active); - } - } - - // Remove styling for last active (even if it may still be active) - if (me.lastActive.length) { - me.updateHoverStyle(me.lastActive, hoverOptions.mode, false); - } - - // Built in hover styling - if (me.active.length && hoverOptions.mode) { - me.updateHoverStyle(me.active, hoverOptions.mode, true); - } - - changed = !helpers.arrayEquals(me.active, me.lastActive); - - // Remember Last Actives - me.lastActive = me.active; - - return changed; - } - }); - - /** - * Provided for backward compatibility, use Chart instead. - * @class Chart.Controller - * @deprecated since version 2.6.0 - * @todo remove at version 3 - * @private - */ - Chart.Controller = Chart; -}; - -},{"22":22,"23":23,"26":26,"29":29,"31":31,"32":32,"34":34,"36":36,"46":46,"49":49}],25:[function(require,module,exports){ -'use strict'; - -var helpers = require(46); - -module.exports = function(Chart) { - - var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift']; - - /** - * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice', - * 'unshift') and notify the listener AFTER the array has been altered. Listeners are - * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments. - */ - function listenArrayEvents(array, listener) { - if (array._chartjs) { - array._chartjs.listeners.push(listener); - return; - } - - Object.defineProperty(array, '_chartjs', { - configurable: true, - enumerable: false, - value: { - listeners: [listener] - } - }); - - arrayEvents.forEach(function(key) { - var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1); - var base = array[key]; - - Object.defineProperty(array, key, { - configurable: true, - enumerable: false, - value: function() { - var args = Array.prototype.slice.call(arguments); - var res = base.apply(this, args); - - helpers.each(array._chartjs.listeners, function(object) { - if (typeof object[method] === 'function') { - object[method].apply(object, args); - } - }); - - return res; - } - }); - }); - } - - /** - * Removes the given array event listener and cleanup extra attached properties (such as - * the _chartjs stub and overridden methods) if array doesn't have any more listeners. - */ - function unlistenArrayEvents(array, listener) { - var stub = array._chartjs; - if (!stub) { - return; - } - - var listeners = stub.listeners; - var index = listeners.indexOf(listener); - if (index !== -1) { - listeners.splice(index, 1); - } - - if (listeners.length > 0) { - return; - } - - arrayEvents.forEach(function(key) { - delete array[key]; - }); - - delete array._chartjs; - } - - // Base class for all dataset controllers (line, bar, etc) - Chart.DatasetController = function(chart, datasetIndex) { - this.initialize(chart, datasetIndex); - }; - - helpers.extend(Chart.DatasetController.prototype, { - - /** - * Element type used to generate a meta dataset (e.g. Chart.element.Line). - * @type {Chart.core.element} - */ - datasetElementType: null, - - /** - * Element type used to generate a meta data (e.g. Chart.element.Point). - * @type {Chart.core.element} - */ - dataElementType: null, - - initialize: function(chart, datasetIndex) { - var me = this; - me.chart = chart; - me.index = datasetIndex; - me.linkScales(); - me.addElements(); - }, - - updateIndex: function(datasetIndex) { - this.index = datasetIndex; - }, - - linkScales: function() { - var me = this; - var meta = me.getMeta(); - var dataset = me.getDataset(); - - if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) { - meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id; - } - if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) { - meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id; - } - }, - - getDataset: function() { - return this.chart.data.datasets[this.index]; - }, - - getMeta: function() { - return this.chart.getDatasetMeta(this.index); - }, - - getScaleForId: function(scaleID) { - return this.chart.scales[scaleID]; - }, - - reset: function() { - this.update(true); - }, - - /** - * @private - */ - destroy: function() { - if (this._data) { - unlistenArrayEvents(this._data, this); - } - }, - - createMetaDataset: function() { - var me = this; - var type = me.datasetElementType; - return type && new type({ - _chart: me.chart, - _datasetIndex: me.index - }); - }, - - createMetaData: function(index) { - var me = this; - var type = me.dataElementType; - return type && new type({ - _chart: me.chart, - _datasetIndex: me.index, - _index: index - }); - }, - - addElements: function() { - var me = this; - var meta = me.getMeta(); - var data = me.getDataset().data || []; - var metaData = meta.data; - var i, ilen; - - for (i = 0, ilen = data.length; i < ilen; ++i) { - metaData[i] = metaData[i] || me.createMetaData(i); - } - - meta.dataset = meta.dataset || me.createMetaDataset(); - }, - - addElementAndReset: function(index) { - var element = this.createMetaData(index); - this.getMeta().data.splice(index, 0, element); - this.updateElement(element, index, true); - }, - - buildOrUpdateElements: function() { - var me = this; - var dataset = me.getDataset(); - var data = dataset.data || (dataset.data = []); - - // In order to correctly handle data addition/deletion animation (an thus simulate - // real-time charts), we need to monitor these data modifications and synchronize - // the internal meta data accordingly. - if (me._data !== data) { - if (me._data) { - // This case happens when the user replaced the data array instance. - unlistenArrayEvents(me._data, me); - } - - listenArrayEvents(data, me); - me._data = data; - } - - // Re-sync meta data in case the user replaced the data array or if we missed - // any updates and so make sure that we handle number of datapoints changing. - me.resyncElements(); - }, - - update: helpers.noop, - - transition: function(easingValue) { - var meta = this.getMeta(); - var elements = meta.data || []; - var ilen = elements.length; - var i = 0; - - for (; i < ilen; ++i) { - elements[i].transition(easingValue); - } - - if (meta.dataset) { - meta.dataset.transition(easingValue); - } - }, - - draw: function() { - var meta = this.getMeta(); - var elements = meta.data || []; - var ilen = elements.length; - var i = 0; - - if (meta.dataset) { - meta.dataset.draw(); - } - - for (; i < ilen; ++i) { - elements[i].draw(); - } - }, - - removeHoverStyle: function(element) { - helpers.merge(element._model, element.$previousStyle || {}); - delete element.$previousStyle; - }, - - setHoverStyle: function(element) { - var dataset = this.chart.data.datasets[element._datasetIndex]; - var index = element._index; - var custom = element.custom || {}; - var valueOrDefault = helpers.valueAtIndexOrDefault; - var getHoverColor = helpers.getHoverColor; - var model = element._model; - - element.$previousStyle = { - backgroundColor: model.backgroundColor, - borderColor: model.borderColor, - borderWidth: model.borderWidth - }; - - model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : valueOrDefault(dataset.hoverBackgroundColor, index, getHoverColor(model.backgroundColor)); - model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : valueOrDefault(dataset.hoverBorderColor, index, getHoverColor(model.borderColor)); - model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : valueOrDefault(dataset.hoverBorderWidth, index, model.borderWidth); - }, - - /** - * @private - */ - resyncElements: function() { - var me = this; - var meta = me.getMeta(); - var data = me.getDataset().data; - var numMeta = meta.data.length; - var numData = data.length; - - if (numData < numMeta) { - meta.data.splice(numData, numMeta - numData); - } else if (numData > numMeta) { - me.insertElements(numMeta, numData - numMeta); - } - }, - - /** - * @private - */ - insertElements: function(start, count) { - for (var i = 0; i < count; ++i) { - this.addElementAndReset(start + i); - } - }, - - /** - * @private - */ - onDataPush: function() { - this.insertElements(this.getDataset().data.length - 1, arguments.length); - }, - - /** - * @private - */ - onDataPop: function() { - this.getMeta().data.pop(); - }, - - /** - * @private - */ - onDataShift: function() { - this.getMeta().data.shift(); - }, - - /** - * @private - */ - onDataSplice: function(start, count) { - this.getMeta().data.splice(start, count); - this.insertElements(start, arguments.length - 2); - }, - - /** - * @private - */ - onDataUnshift: function() { - this.insertElements(0, arguments.length); - } - }); - - Chart.DatasetController.extend = helpers.inherits; -}; - -},{"46":46}],26:[function(require,module,exports){ -'use strict'; - -var helpers = require(46); - -module.exports = { - /** - * @private - */ - _set: function(scope, values) { - return helpers.merge(this[scope] || (this[scope] = {}), values); - } -}; - -},{"46":46}],27:[function(require,module,exports){ -'use strict'; - -var color = require(3); -var helpers = require(46); - -function interpolate(start, view, model, ease) { - var keys = Object.keys(model); - var i, ilen, key, actual, origin, target, type, c0, c1; - - for (i = 0, ilen = keys.length; i < ilen; ++i) { - key = keys[i]; - - target = model[key]; - - // if a value is added to the model after pivot() has been called, the view - // doesn't contain it, so let's initialize the view to the target value. - if (!view.hasOwnProperty(key)) { - view[key] = target; - } - - actual = view[key]; - - if (actual === target || key[0] === '_') { - continue; - } - - if (!start.hasOwnProperty(key)) { - start[key] = actual; - } - - origin = start[key]; - - type = typeof target; - - if (type === typeof origin) { - if (type === 'string') { - c0 = color(origin); - if (c0.valid) { - c1 = color(target); - if (c1.valid) { - view[key] = c1.mix(c0, ease).rgbString(); - continue; - } - } - } else if (type === 'number' && isFinite(origin) && isFinite(target)) { - view[key] = origin + (target - origin) * ease; - continue; - } - } - - view[key] = target; - } -} - -var Element = function(configuration) { - helpers.extend(this, configuration); - this.initialize.apply(this, arguments); -}; - -helpers.extend(Element.prototype, { - - initialize: function() { - this.hidden = false; + return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2]; }, - pivot: function() { - var me = this; - if (!me._view) { - me._view = helpers.clone(me._model); + contrast: function (color2) { + // http://www.w3.org/TR/WCAG20/#contrast-ratiodef + var lum1 = this.luminosity(); + var lum2 = color2.luminosity(); + if (lum1 > lum2) { + return (lum1 + 0.05) / (lum2 + 0.05); } - me._start = {}; - return me; + return (lum2 + 0.05) / (lum1 + 0.05); }, - transition: function(ease) { - var me = this; - var model = me._model; - var start = me._start; - var view = me._view; - - // No animation -> No Transition - if (!model || ease === 1) { - me._view = model; - me._start = null; - return me; + level: function (color2) { + var contrastRatio = this.contrast(color2); + if (contrastRatio >= 7.1) { + return 'AAA'; } - if (!view) { - view = me._view = {}; - } - - if (!start) { - start = me._start = {}; - } - - interpolate(start, view, model, ease); - - return me; + return (contrastRatio >= 4.5) ? 'AA' : ''; }, - tooltipPosition: function() { - return { - x: this._model.x, - y: this._model.y - }; + dark: function () { + // YIQ equation from http://24ways.org/2010/calculating-color-contrast + var rgb = this.values.rgb; + var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000; + return yiq < 128; }, - hasValue: function() { - return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y); - } -}); - -Element.extend = helpers.inherits; - -module.exports = Element; - -},{"3":3,"46":46}],28:[function(require,module,exports){ -/* global window: false */ -/* global document: false */ -'use strict'; - -var color = require(3); -var defaults = require(26); -var helpers = require(46); -var scaleService = require(34); - -module.exports = function() { - - // -- Basic js utility methods - - helpers.configMerge = function(/* objects ... */) { - return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), { - merger: function(key, target, source, options) { - var tval = target[key] || {}; - var sval = source[key]; - - if (key === 'scales') { - // scale config merging is complex. Add our own function here for that - target[key] = helpers.scaleMerge(tval, sval); - } else if (key === 'scale') { - // used in polar area & radar charts since there is only one scale - target[key] = helpers.merge(tval, [scaleService.getScaleDefaults(sval.type), sval]); - } else { - helpers._merger(key, target, source, options); - } - } - }); - }; - - helpers.scaleMerge = function(/* objects ... */) { - return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), { - merger: function(key, target, source, options) { - if (key === 'xAxes' || key === 'yAxes') { - var slen = source[key].length; - var i, type, scale; - - if (!target[key]) { - target[key] = []; - } - - for (i = 0; i < slen; ++i) { - scale = source[key][i]; - type = helpers.valueOrDefault(scale.type, key === 'xAxes' ? 'category' : 'linear'); - - if (i >= target[key].length) { - target[key].push({}); - } - - if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) { - // new/untyped scale or type changed: let's apply the new defaults - // then merge source scale to correctly overwrite the defaults. - helpers.merge(target[key][i], [scaleService.getScaleDefaults(type), scale]); - } else { - // scales type are the same - helpers.merge(target[key][i], scale); - } - } - } else { - helpers._merger(key, target, source, options); - } - } - }); - }; - - helpers.where = function(collection, filterCallback) { - if (helpers.isArray(collection) && Array.prototype.filter) { - return collection.filter(filterCallback); - } - var filtered = []; - - helpers.each(collection, function(item) { - if (filterCallback(item)) { - filtered.push(item); - } - }); - - return filtered; - }; - helpers.findIndex = Array.prototype.findIndex ? - function(array, callback, scope) { - return array.findIndex(callback, scope); - } : - function(array, callback, scope) { - scope = scope === undefined ? array : scope; - for (var i = 0, ilen = array.length; i < ilen; ++i) { - if (callback.call(scope, array[i], i, array)) { - return i; - } - } - return -1; - }; - helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) { - // Default to start of the array - if (helpers.isNullOrUndef(startIndex)) { - startIndex = -1; - } - for (var i = startIndex + 1; i < arrayToSearch.length; i++) { - var currentItem = arrayToSearch[i]; - if (filterCallback(currentItem)) { - return currentItem; - } - } - }; - helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) { - // Default to end of the array - if (helpers.isNullOrUndef(startIndex)) { - startIndex = arrayToSearch.length; - } - for (var i = startIndex - 1; i >= 0; i--) { - var currentItem = arrayToSearch[i]; - if (filterCallback(currentItem)) { - return currentItem; - } - } - }; - - // -- Math methods - helpers.isNumber = function(n) { - return !isNaN(parseFloat(n)) && isFinite(n); - }; - helpers.almostEquals = function(x, y, epsilon) { - return Math.abs(x - y) < epsilon; - }; - helpers.almostWhole = function(x, epsilon) { - var rounded = Math.round(x); - return (((rounded - epsilon) < x) && ((rounded + epsilon) > x)); - }; - helpers.max = function(array) { - return array.reduce(function(max, value) { - if (!isNaN(value)) { - return Math.max(max, value); - } - return max; - }, Number.NEGATIVE_INFINITY); - }; - helpers.min = function(array) { - return array.reduce(function(min, value) { - if (!isNaN(value)) { - return Math.min(min, value); - } - return min; - }, Number.POSITIVE_INFINITY); - }; - helpers.sign = Math.sign ? - function(x) { - return Math.sign(x); - } : - function(x) { - x = +x; // convert to a number - if (x === 0 || isNaN(x)) { - return x; - } - return x > 0 ? 1 : -1; - }; - helpers.log10 = Math.log10 ? - function(x) { - return Math.log10(x); - } : - function(x) { - var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10. - // Check for whole powers of 10, - // which due to floating point rounding error should be corrected. - var powerOf10 = Math.round(exponent); - var isPowerOf10 = x === Math.pow(10, powerOf10); - - return isPowerOf10 ? powerOf10 : exponent; - }; - helpers.toRadians = function(degrees) { - return degrees * (Math.PI / 180); - }; - helpers.toDegrees = function(radians) { - return radians * (180 / Math.PI); - }; - // Gets the angle from vertical upright to the point about a centre. - helpers.getAngleFromPoint = function(centrePoint, anglePoint) { - var distanceFromXCenter = anglePoint.x - centrePoint.x; - var distanceFromYCenter = anglePoint.y - centrePoint.y; - var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter); - - var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter); - - if (angle < (-0.5 * Math.PI)) { - angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2] - } - - return { - angle: angle, - distance: radialDistanceFromCenter - }; - }; - helpers.distanceBetweenPoints = function(pt1, pt2) { - return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2)); - }; - helpers.aliasPixel = function(pixelWidth) { - return (pixelWidth % 2 === 0) ? 0 : 0.5; - }; - helpers.splineCurve = function(firstPoint, middlePoint, afterPoint, t) { - // Props to Rob Spencer at scaled innovation for his post on splining between points - // http://scaledinnovation.com/analytics/splines/aboutSplines.html - - // This function must also respect "skipped" points - - var previous = firstPoint.skip ? middlePoint : firstPoint; - var current = middlePoint; - var next = afterPoint.skip ? middlePoint : afterPoint; - - var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2)); - var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2)); - - var s01 = d01 / (d01 + d12); - var s12 = d12 / (d01 + d12); - - // If all points are the same, s01 & s02 will be inf - s01 = isNaN(s01) ? 0 : s01; - s12 = isNaN(s12) ? 0 : s12; - - var fa = t * s01; // scaling factor for triangle Ta - var fb = t * s12; - - return { - previous: { - x: current.x - fa * (next.x - previous.x), - y: current.y - fa * (next.y - previous.y) - }, - next: { - x: current.x + fb * (next.x - previous.x), - y: current.y + fb * (next.y - previous.y) - } - }; - }; - helpers.EPSILON = Number.EPSILON || 1e-14; - helpers.splineCurveMonotone = function(points) { - // This function calculates Bézier control points in a similar way than |splineCurve|, - // but preserves monotonicity of the provided data and ensures no local extremums are added - // between the dataset discrete points due to the interpolation. - // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation - - var pointsWithTangents = (points || []).map(function(point) { - return { - model: point._model, - deltaK: 0, - mK: 0 - }; - }); - - // Calculate slopes (deltaK) and initialize tangents (mK) - var pointsLen = pointsWithTangents.length; - var i, pointBefore, pointCurrent, pointAfter; - for (i = 0; i < pointsLen; ++i) { - pointCurrent = pointsWithTangents[i]; - if (pointCurrent.model.skip) { - continue; - } - - pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; - pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; - if (pointAfter && !pointAfter.model.skip) { - var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x); - - // In the case of two points that appear at the same x pixel, slopeDeltaX is 0 - pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0; - } - - if (!pointBefore || pointBefore.model.skip) { - pointCurrent.mK = pointCurrent.deltaK; - } else if (!pointAfter || pointAfter.model.skip) { - pointCurrent.mK = pointBefore.deltaK; - } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) { - pointCurrent.mK = 0; - } else { - pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2; - } - } - - // Adjust tangents to ensure monotonic properties - var alphaK, betaK, tauK, squaredMagnitude; - for (i = 0; i < pointsLen - 1; ++i) { - pointCurrent = pointsWithTangents[i]; - pointAfter = pointsWithTangents[i + 1]; - if (pointCurrent.model.skip || pointAfter.model.skip) { - continue; - } - - if (helpers.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) { - pointCurrent.mK = pointAfter.mK = 0; - continue; - } - - alphaK = pointCurrent.mK / pointCurrent.deltaK; - betaK = pointAfter.mK / pointCurrent.deltaK; - squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2); - if (squaredMagnitude <= 9) { - continue; - } - - tauK = 3 / Math.sqrt(squaredMagnitude); - pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK; - pointAfter.mK = betaK * tauK * pointCurrent.deltaK; - } - - // Compute control points - var deltaX; - for (i = 0; i < pointsLen; ++i) { - pointCurrent = pointsWithTangents[i]; - if (pointCurrent.model.skip) { - continue; - } - - pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; - pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; - if (pointBefore && !pointBefore.model.skip) { - deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3; - pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX; - pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK; - } - if (pointAfter && !pointAfter.model.skip) { - deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3; - pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX; - pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK; - } - } - }; - helpers.nextItem = function(collection, index, loop) { - if (loop) { - return index >= collection.length - 1 ? collection[0] : collection[index + 1]; - } - return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1]; - }; - helpers.previousItem = function(collection, index, loop) { - if (loop) { - return index <= 0 ? collection[collection.length - 1] : collection[index - 1]; - } - return index <= 0 ? collection[0] : collection[index - 1]; - }; - // Implementation of the nice number algorithm used in determining where axis labels will go - helpers.niceNum = function(range, round) { - var exponent = Math.floor(helpers.log10(range)); - var fraction = range / Math.pow(10, exponent); - var niceFraction; - - if (round) { - if (fraction < 1.5) { - niceFraction = 1; - } else if (fraction < 3) { - niceFraction = 2; - } else if (fraction < 7) { - niceFraction = 5; - } else { - niceFraction = 10; - } - } else if (fraction <= 1.0) { - niceFraction = 1; - } else if (fraction <= 2) { - niceFraction = 2; - } else if (fraction <= 5) { - niceFraction = 5; - } else { - niceFraction = 10; - } - - return niceFraction * Math.pow(10, exponent); - }; - // Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/ - helpers.requestAnimFrame = (function() { - if (typeof window === 'undefined') { - return function(callback) { - callback(); - }; - } - return window.requestAnimationFrame || - window.webkitRequestAnimationFrame || - window.mozRequestAnimationFrame || - window.oRequestAnimationFrame || - window.msRequestAnimationFrame || - function(callback) { - return window.setTimeout(callback, 1000 / 60); - }; - }()); - // -- DOM methods - helpers.getRelativePosition = function(evt, chart) { - var mouseX, mouseY; - var e = evt.originalEvent || evt; - var canvas = evt.target || evt.srcElement; - var boundingRect = canvas.getBoundingClientRect(); - - var touches = e.touches; - if (touches && touches.length > 0) { - mouseX = touches[0].clientX; - mouseY = touches[0].clientY; - - } else { - mouseX = e.clientX; - mouseY = e.clientY; - } - - // Scale mouse coordinates into canvas coordinates - // by following the pattern laid out by 'jerryj' in the comments of - // http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/ - var paddingLeft = parseFloat(helpers.getStyle(canvas, 'padding-left')); - var paddingTop = parseFloat(helpers.getStyle(canvas, 'padding-top')); - var paddingRight = parseFloat(helpers.getStyle(canvas, 'padding-right')); - var paddingBottom = parseFloat(helpers.getStyle(canvas, 'padding-bottom')); - var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight; - var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom; - - // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However - // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here - mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio); - mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio); - - return { - x: mouseX, - y: mouseY - }; - - }; - - // Private helper function to convert max-width/max-height values that may be percentages into a number - function parseMaxStyle(styleValue, node, parentProperty) { - var valueInPixels; - if (typeof styleValue === 'string') { - valueInPixels = parseInt(styleValue, 10); - - if (styleValue.indexOf('%') !== -1) { - // percentage * size in dimension - valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty]; - } - } else { - valueInPixels = styleValue; - } - - return valueInPixels; - } - - /** - * Returns if the given value contains an effective constraint. - * @private - */ - function isConstrainedValue(value) { - return value !== undefined && value !== null && value !== 'none'; - } - - // Private helper to get a constraint dimension - // @param domNode : the node to check the constraint on - // @param maxStyle : the style that defines the maximum for the direction we are using (maxWidth / maxHeight) - // @param percentageProperty : property of parent to use when calculating width as a percentage - // @see http://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser - function getConstraintDimension(domNode, maxStyle, percentageProperty) { - var view = document.defaultView; - var parentNode = helpers._getParentNode(domNode); - var constrainedNode = view.getComputedStyle(domNode)[maxStyle]; - var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle]; - var hasCNode = isConstrainedValue(constrainedNode); - var hasCContainer = isConstrainedValue(constrainedContainer); - var infinity = Number.POSITIVE_INFINITY; - - if (hasCNode || hasCContainer) { - return Math.min( - hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity, - hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity); - } - - return 'none'; - } - // returns Number or undefined if no constraint - helpers.getConstraintWidth = function(domNode) { - return getConstraintDimension(domNode, 'max-width', 'clientWidth'); - }; - // returns Number or undefined if no constraint - helpers.getConstraintHeight = function(domNode) { - return getConstraintDimension(domNode, 'max-height', 'clientHeight'); - }; - /** - * @private - */ - helpers._calculatePadding = function(container, padding, parentDimension) { - padding = helpers.getStyle(container, padding); - - return padding.indexOf('%') > -1 ? parentDimension / parseInt(padding, 10) : parseInt(padding, 10); - }; - /** - * @private - */ - helpers._getParentNode = function(domNode) { - var parent = domNode.parentNode; - if (parent && parent.host) { - parent = parent.host; - } - return parent; - }; - helpers.getMaximumWidth = function(domNode) { - var container = helpers._getParentNode(domNode); - if (!container) { - return domNode.clientWidth; - } - - var clientWidth = container.clientWidth; - var paddingLeft = helpers._calculatePadding(container, 'padding-left', clientWidth); - var paddingRight = helpers._calculatePadding(container, 'padding-right', clientWidth); - - var w = clientWidth - paddingLeft - paddingRight; - var cw = helpers.getConstraintWidth(domNode); - return isNaN(cw) ? w : Math.min(w, cw); - }; - helpers.getMaximumHeight = function(domNode) { - var container = helpers._getParentNode(domNode); - if (!container) { - return domNode.clientHeight; - } - - var clientHeight = container.clientHeight; - var paddingTop = helpers._calculatePadding(container, 'padding-top', clientHeight); - var paddingBottom = helpers._calculatePadding(container, 'padding-bottom', clientHeight); - - var h = clientHeight - paddingTop - paddingBottom; - var ch = helpers.getConstraintHeight(domNode); - return isNaN(ch) ? h : Math.min(h, ch); - }; - helpers.getStyle = function(el, property) { - return el.currentStyle ? - el.currentStyle[property] : - document.defaultView.getComputedStyle(el, null).getPropertyValue(property); - }; - helpers.retinaScale = function(chart, forceRatio) { - var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1; - if (pixelRatio === 1) { - return; - } - - var canvas = chart.canvas; - var height = chart.height; - var width = chart.width; - - canvas.height = height * pixelRatio; - canvas.width = width * pixelRatio; - chart.ctx.scale(pixelRatio, pixelRatio); - - // If no style has been set on the canvas, the render size is used as display size, - // making the chart visually bigger, so let's enforce it to the "correct" values. - // See https://github.com/chartjs/Chart.js/issues/3575 - if (!canvas.style.height && !canvas.style.width) { - canvas.style.height = height + 'px'; - canvas.style.width = width + 'px'; - } - }; - // -- Canvas methods - helpers.fontString = function(pixelSize, fontStyle, fontFamily) { - return fontStyle + ' ' + pixelSize + 'px ' + fontFamily; - }; - helpers.longestText = function(ctx, font, arrayOfThings, cache) { - cache = cache || {}; - var data = cache.data = cache.data || {}; - var gc = cache.garbageCollect = cache.garbageCollect || []; - - if (cache.font !== font) { - data = cache.data = {}; - gc = cache.garbageCollect = []; - cache.font = font; - } - - ctx.font = font; - var longest = 0; - helpers.each(arrayOfThings, function(thing) { - // Undefined strings and arrays should not be measured - if (thing !== undefined && thing !== null && helpers.isArray(thing) !== true) { - longest = helpers.measureText(ctx, data, gc, longest, thing); - } else if (helpers.isArray(thing)) { - // if it is an array lets measure each element - // to do maybe simplify this function a bit so we can do this more recursively? - helpers.each(thing, function(nestedThing) { - // Undefined strings and arrays should not be measured - if (nestedThing !== undefined && nestedThing !== null && !helpers.isArray(nestedThing)) { - longest = helpers.measureText(ctx, data, gc, longest, nestedThing); - } - }); - } - }); - - var gcLen = gc.length / 2; - if (gcLen > arrayOfThings.length) { - for (var i = 0; i < gcLen; i++) { - delete data[gc[i]]; - } - gc.splice(0, gcLen); - } - return longest; - }; - helpers.measureText = function(ctx, data, gc, longest, string) { - var textWidth = data[string]; - if (!textWidth) { - textWidth = data[string] = ctx.measureText(string).width; - gc.push(string); - } - if (textWidth > longest) { - longest = textWidth; - } - return longest; - }; - helpers.numberOfLabelLines = function(arrayOfThings) { - var numberOfLines = 1; - helpers.each(arrayOfThings, function(thing) { - if (helpers.isArray(thing)) { - if (thing.length > numberOfLines) { - numberOfLines = thing.length; - } - } - }); - return numberOfLines; - }; - - helpers.color = !color ? - function(value) { - console.error('Color.js not found!'); - return value; - } : - function(value) { - /* global CanvasGradient */ - if (value instanceof CanvasGradient) { - value = defaults.global.defaultColor; - } - - return color(value); - }; - - helpers.getHoverColor = function(colorValue) { - /* global CanvasPattern */ - return (colorValue instanceof CanvasPattern) ? - colorValue : - helpers.color(colorValue).saturate(0.5).darken(0.1).rgbString(); - }; -}; - -},{"26":26,"3":3,"34":34,"46":46}],29:[function(require,module,exports){ -'use strict'; - -var helpers = require(46); - -/** - * Helper function to get relative position for an event - * @param {Event|IEvent} event - The event to get the position for - * @param {Chart} chart - The chart - * @returns {Point} the event position - */ -function getRelativePosition(e, chart) { - if (e.native) { - return { - x: e.x, - y: e.y - }; - } - - return helpers.getRelativePosition(e, chart); -} - -/** - * Helper function to traverse all of the visible elements in the chart - * @param chart {chart} the chart - * @param handler {Function} the callback to execute for each visible item - */ -function parseVisibleItems(chart, handler) { - var datasets = chart.data.datasets; - var meta, i, j, ilen, jlen; - - for (i = 0, ilen = datasets.length; i < ilen; ++i) { - if (!chart.isDatasetVisible(i)) { - continue; - } - - meta = chart.getDatasetMeta(i); - for (j = 0, jlen = meta.data.length; j < jlen; ++j) { - var element = meta.data[j]; - if (!element._view.skip) { - handler(element); - } - } - } -} - -/** - * Helper function to get the items that intersect the event position - * @param items {ChartElement[]} elements to filter - * @param position {Point} the point to be nearest to - * @return {ChartElement[]} the nearest items - */ -function getIntersectItems(chart, position) { - var elements = []; - - parseVisibleItems(chart, function(element) { - if (element.inRange(position.x, position.y)) { - elements.push(element); - } - }); - - return elements; -} - -/** - * Helper function to get the items nearest to the event position considering all visible items in teh chart - * @param chart {Chart} the chart to look at elements from - * @param position {Point} the point to be nearest to - * @param intersect {Boolean} if true, only consider items that intersect the position - * @param distanceMetric {Function} function to provide the distance between points - * @return {ChartElement[]} the nearest items - */ -function getNearestItems(chart, position, intersect, distanceMetric) { - var minDistance = Number.POSITIVE_INFINITY; - var nearestItems = []; - - parseVisibleItems(chart, function(element) { - if (intersect && !element.inRange(position.x, position.y)) { - return; - } - - var center = element.getCenterPoint(); - var distance = distanceMetric(position, center); - - if (distance < minDistance) { - nearestItems = [element]; - minDistance = distance; - } else if (distance === minDistance) { - // Can have multiple items at the same distance in which case we sort by size - nearestItems.push(element); - } - }); - - return nearestItems; -} - -/** - * Get a distance metric function for two points based on the - * axis mode setting - * @param {String} axis the axis mode. x|y|xy - */ -function getDistanceMetricForAxis(axis) { - var useX = axis.indexOf('x') !== -1; - var useY = axis.indexOf('y') !== -1; - - return function(pt1, pt2) { - var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0; - var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0; - return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2)); - }; -} - -function indexMode(chart, e, options) { - var position = getRelativePosition(e, chart); - // Default axis for index mode is 'x' to match old behaviour - options.axis = options.axis || 'x'; - var distanceMetric = getDistanceMetricForAxis(options.axis); - var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); - var elements = []; - - if (!items.length) { - return []; - } - - chart.data.datasets.forEach(function(dataset, datasetIndex) { - if (chart.isDatasetVisible(datasetIndex)) { - var meta = chart.getDatasetMeta(datasetIndex); - var element = meta.data[items[0]._index]; - - // don't count items that are skipped (null data) - if (element && !element._view.skip) { - elements.push(element); - } - } - }); - - return elements; -} - -/** - * @interface IInteractionOptions - */ -/** - * If true, only consider items that intersect the point - * @name IInterfaceOptions#boolean - * @type Boolean - */ - -/** - * Contains interaction related functions - * @namespace Chart.Interaction - */ -module.exports = { - // Helper function for different modes - modes: { - single: function(chart, e) { - var position = getRelativePosition(e, chart); - var elements = []; - - parseVisibleItems(chart, function(element) { - if (element.inRange(position.x, position.y)) { - elements.push(element); - return elements; - } - }); - - return elements.slice(0, 1); - }, - - /** - * @function Chart.Interaction.modes.label - * @deprecated since version 2.4.0 - * @todo remove at version 3 - * @private - */ - label: indexMode, - - /** - * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something - * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item - * @function Chart.Interaction.modes.index - * @since v2.4.0 - * @param chart {chart} the chart we are returning items from - * @param e {Event} the event we are find things at - * @param options {IInteractionOptions} options to use during interaction - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - index: indexMode, - - /** - * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something - * If the options.intersect is false, we find the nearest item and return the items in that dataset - * @function Chart.Interaction.modes.dataset - * @param chart {chart} the chart we are returning items from - * @param e {Event} the event we are find things at - * @param options {IInteractionOptions} options to use during interaction - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - dataset: function(chart, e, options) { - var position = getRelativePosition(e, chart); - options.axis = options.axis || 'xy'; - var distanceMetric = getDistanceMetricForAxis(options.axis); - var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); - - if (items.length > 0) { - items = chart.getDatasetMeta(items[0]._datasetIndex).data; - } - - return items; - }, - - /** - * @function Chart.Interaction.modes.x-axis - * @deprecated since version 2.4.0. Use index mode and intersect == true - * @todo remove at version 3 - * @private - */ - 'x-axis': function(chart, e) { - return indexMode(chart, e, {intersect: false}); - }, - - /** - * Point mode returns all elements that hit test based on the event position - * of the event - * @function Chart.Interaction.modes.intersect - * @param chart {chart} the chart we are returning items from - * @param e {Event} the event we are find things at - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - point: function(chart, e) { - var position = getRelativePosition(e, chart); - return getIntersectItems(chart, position); - }, - - /** - * nearest mode returns the element closest to the point - * @function Chart.Interaction.modes.intersect - * @param chart {chart} the chart we are returning items from - * @param e {Event} the event we are find things at - * @param options {IInteractionOptions} options to use - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - nearest: function(chart, e, options) { - var position = getRelativePosition(e, chart); - options.axis = options.axis || 'xy'; - var distanceMetric = getDistanceMetricForAxis(options.axis); - var nearestItems = getNearestItems(chart, position, options.intersect, distanceMetric); - - // We have multiple items at the same distance from the event. Now sort by smallest - if (nearestItems.length > 1) { - nearestItems.sort(function(a, b) { - var sizeA = a.getArea(); - var sizeB = b.getArea(); - var ret = sizeA - sizeB; - - if (ret === 0) { - // if equal sort by dataset index - ret = a._datasetIndex - b._datasetIndex; - } - - return ret; - }); - } - - // Return only 1 item - return nearestItems.slice(0, 1); - }, - - /** - * x mode returns the elements that hit-test at the current x coordinate - * @function Chart.Interaction.modes.x - * @param chart {chart} the chart we are returning items from - * @param e {Event} the event we are find things at - * @param options {IInteractionOptions} options to use - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - x: function(chart, e, options) { - var position = getRelativePosition(e, chart); - var items = []; - var intersectsItem = false; - - parseVisibleItems(chart, function(element) { - if (element.inXRange(position.x)) { - items.push(element); - } - - if (element.inRange(position.x, position.y)) { - intersectsItem = true; - } - }); - - // If we want to trigger on an intersect and we don't have any items - // that intersect the position, return nothing - if (options.intersect && !intersectsItem) { - items = []; - } - return items; - }, - - /** - * y mode returns the elements that hit-test at the current y coordinate - * @function Chart.Interaction.modes.y - * @param chart {chart} the chart we are returning items from - * @param e {Event} the event we are find things at - * @param options {IInteractionOptions} options to use - * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned - */ - y: function(chart, e, options) { - var position = getRelativePosition(e, chart); - var items = []; - var intersectsItem = false; - - parseVisibleItems(chart, function(element) { - if (element.inYRange(position.y)) { - items.push(element); - } - - if (element.inRange(position.x, position.y)) { - intersectsItem = true; - } - }); - - // If we want to trigger on an intersect and we don't have any items - // that intersect the position, return nothing - if (options.intersect && !intersectsItem) { - items = []; - } - return items; - } - } -}; - -},{"46":46}],30:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); - -defaults._set('global', { - responsive: true, - responsiveAnimationDuration: 0, - maintainAspectRatio: true, - events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove'], - hover: { - onHover: null, - mode: 'nearest', - intersect: true, - animationDuration: 400 + light: function () { + return !this.dark(); }, - onClick: null, - defaultColor: 'rgba(0,0,0,0.1)', - defaultFontColor: '#666', - defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif", - defaultFontSize: 12, - defaultFontStyle: 'normal', - showLines: true, - // Element defaults defined in element extensions - elements: {}, - - // Layout options such as padding - layout: { - padding: { - top: 0, - right: 0, - bottom: 0, - left: 0 + negate: function () { + var rgb = []; + for (var i = 0; i < 3; i++) { + rgb[i] = 255 - this.values.rgb[i]; } - } -}); - -module.exports = function() { - - // Occupy the global variable of Chart, and create a simple base class - var Chart = function(item, config) { - this.construct(item, config); + this.setValues('rgb', rgb); return this; - }; + }, - Chart.Chart = Chart; + lighten: function (ratio) { + var hsl = this.values.hsl; + hsl[2] += hsl[2] * ratio; + this.setValues('hsl', hsl); + return this; + }, - return Chart; -}; + darken: function (ratio) { + var hsl = this.values.hsl; + hsl[2] -= hsl[2] * ratio; + this.setValues('hsl', hsl); + return this; + }, -},{"26":26}],31:[function(require,module,exports){ -'use strict'; + saturate: function (ratio) { + var hsl = this.values.hsl; + hsl[1] += hsl[1] * ratio; + this.setValues('hsl', hsl); + return this; + }, -var helpers = require(46); + desaturate: function (ratio) { + var hsl = this.values.hsl; + hsl[1] -= hsl[1] * ratio; + this.setValues('hsl', hsl); + return this; + }, -function filterByPosition(array, position) { - return helpers.where(array, function(v) { - return v.position === position; - }); -} + whiten: function (ratio) { + var hwb = this.values.hwb; + hwb[1] += hwb[1] * ratio; + this.setValues('hwb', hwb); + return this; + }, -function sortByWeight(array, reverse) { - array.forEach(function(v, i) { - v._tmpIndex_ = i; - return v; - }); - array.sort(function(a, b) { - var v0 = reverse ? b : a; - var v1 = reverse ? a : b; - return v0.weight === v1.weight ? - v0._tmpIndex_ - v1._tmpIndex_ : - v0.weight - v1.weight; - }); - array.forEach(function(v) { - delete v._tmpIndex_; - }); -} + blacken: function (ratio) { + var hwb = this.values.hwb; + hwb[2] += hwb[2] * ratio; + this.setValues('hwb', hwb); + return this; + }, -/** - * @interface ILayoutItem - * @prop {String} position - The position of the item in the chart layout. Possible values are - * 'left', 'top', 'right', 'bottom', and 'chartArea' - * @prop {Number} weight - The weight used to sort the item. Higher weights are further away from the chart area - * @prop {Boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down - * @prop {Function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom) - * @prop {Function} update - Takes two parameters: width and height. Returns size of item - * @prop {Function} getPadding - Returns an object with padding on the edges - * @prop {Number} width - Width of item. Must be valid after update() - * @prop {Number} height - Height of item. Must be valid after update() - * @prop {Number} left - Left edge of the item. Set by layout system and cannot be used in update - * @prop {Number} top - Top edge of the item. Set by layout system and cannot be used in update - * @prop {Number} right - Right edge of the item. Set by layout system and cannot be used in update - * @prop {Number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update - */ + greyscale: function () { + var rgb = this.values.rgb; + // http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale + var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11; + this.setValues('rgb', [val, val, val]); + return this; + }, -// The layout service is very self explanatory. It's responsible for the layout within a chart. -// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need -// It is this service's responsibility of carrying out that layout. -module.exports = { - defaults: {}, + clearer: function (ratio) { + var alpha = this.values.alpha; + this.setValues('alpha', alpha - (alpha * ratio)); + return this; + }, - /** - * Register a box to a chart. - * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title. - * @param {Chart} chart - the chart to use - * @param {ILayoutItem} item - the item to add to be layed out - */ - addBox: function(chart, item) { - if (!chart.boxes) { - chart.boxes = []; - } + opaquer: function (ratio) { + var alpha = this.values.alpha; + this.setValues('alpha', alpha + (alpha * ratio)); + return this; + }, - // initialize item with default values - item.fullWidth = item.fullWidth || false; - item.position = item.position || 'top'; - item.weight = item.weight || 0; - - chart.boxes.push(item); + rotate: function (degrees) { + var hsl = this.values.hsl; + var hue = (hsl[0] + degrees) % 360; + hsl[0] = hue < 0 ? 360 + hue : hue; + this.setValues('hsl', hsl); + return this; }, /** - * Remove a layoutItem from a chart - * @param {Chart} chart - the chart to remove the box from - * @param {Object} layoutItem - the item to remove from the layout + * Ported from sass implementation in C + * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209 */ - removeBox: function(chart, layoutItem) { - var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1; - if (index !== -1) { - chart.boxes.splice(index, 1); - } + mix: function (mixinColor, weight) { + var color1 = this; + var color2 = mixinColor; + var p = weight === undefined ? 0.5 : weight; + + var w = 2 * p - 1; + var a = color1.alpha() - color2.alpha(); + + var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0; + var w2 = 1 - w1; + + return this + .rgb( + w1 * color1.red() + w2 * color2.red(), + w1 * color1.green() + w2 * color2.green(), + w1 * color1.blue() + w2 * color2.blue() + ) + .alpha(color1.alpha() * p + color2.alpha() * (1 - p)); }, - /** - * Sets (or updates) options on the given `item`. - * @param {Chart} chart - the chart in which the item lives (or will be added to) - * @param {Object} item - the item to configure with the given options - * @param {Object} options - the new item options. - */ - configure: function(chart, item, options) { - var props = ['fullWidth', 'position', 'weight']; - var ilen = props.length; - var i = 0; - var prop; - - for (; i < ilen; ++i) { - prop = props[i]; - if (options.hasOwnProperty(prop)) { - item[prop] = options[prop]; - } - } + toJSON: function () { + return this.rgb(); }, - /** - * Fits boxes of the given chart into the given size by having each box measure itself - * then running a fitting algorithm - * @param {Chart} chart - the chart - * @param {Number} width - the width to fit into - * @param {Number} height - the height to fit into - */ - update: function(chart, width, height) { - if (!chart) { - return; - } + clone: function () { + // NOTE(SB): using node-clone creates a dependency to Buffer when using browserify, + // making the final build way to big to embed in Chart.js. So let's do it manually, + // assuming that values to clone are 1 dimension arrays containing only numbers, + // except 'alpha' which is a number. + var result = new Color(); + var source = this.values; + var target = result.values; + var value, type; - var layoutOptions = chart.options.layout || {}; - var padding = helpers.options.toPadding(layoutOptions.padding); - var leftPadding = padding.left; - var rightPadding = padding.right; - var topPadding = padding.top; - var bottomPadding = padding.bottom; - - var leftBoxes = filterByPosition(chart.boxes, 'left'); - var rightBoxes = filterByPosition(chart.boxes, 'right'); - var topBoxes = filterByPosition(chart.boxes, 'top'); - var bottomBoxes = filterByPosition(chart.boxes, 'bottom'); - var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea'); - - // Sort boxes by weight. A higher weight is further away from the chart area - sortByWeight(leftBoxes, true); - sortByWeight(rightBoxes, false); - sortByWeight(topBoxes, true); - sortByWeight(bottomBoxes, false); - - // Essentially we now have any number of boxes on each of the 4 sides. - // Our canvas looks like the following. - // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and - // B1 is the bottom axis - // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays - // These locations are single-box locations only, when trying to register a chartArea location that is already taken, - // an error will be thrown. - // - // |----------------------------------------------------| - // | T1 (Full Width) | - // |----------------------------------------------------| - // | | | T2 | | - // | |----|-------------------------------------|----| - // | | | C1 | | C2 | | - // | | |----| |----| | - // | | | | | - // | L1 | L2 | ChartArea (C0) | R1 | - // | | | | | - // | | |----| |----| | - // | | | C3 | | C4 | | - // | |----|-------------------------------------|----| - // | | | B1 | | - // |----------------------------------------------------| - // | B2 (Full Width) | - // |----------------------------------------------------| - // - // What we do to find the best sizing, we do the following - // 1. Determine the minimum size of the chart area. - // 2. Split the remaining width equally between each vertical axis - // 3. Split the remaining height equally between each horizontal axis - // 4. Give each layout the maximum size it can be. The layout will return it's minimum size - // 5. Adjust the sizes of each axis based on it's minimum reported size. - // 6. Refit each axis - // 7. Position each axis in the final location - // 8. Tell the chart the final location of the chart area - // 9. Tell any axes that overlay the chart area the positions of the chart area - - // Step 1 - var chartWidth = width - leftPadding - rightPadding; - var chartHeight = height - topPadding - bottomPadding; - var chartAreaWidth = chartWidth / 2; // min 50% - var chartAreaHeight = chartHeight / 2; // min 50% - - // Step 2 - var verticalBoxWidth = (width - chartAreaWidth) / (leftBoxes.length + rightBoxes.length); - - // Step 3 - var horizontalBoxHeight = (height - chartAreaHeight) / (topBoxes.length + bottomBoxes.length); - - // Step 4 - var maxChartAreaWidth = chartWidth; - var maxChartAreaHeight = chartHeight; - var minBoxSizes = []; - - function getMinimumBoxSize(box) { - var minSize; - var isHorizontal = box.isHorizontal(); - - if (isHorizontal) { - minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, horizontalBoxHeight); - maxChartAreaHeight -= minSize.height; - } else { - minSize = box.update(verticalBoxWidth, maxChartAreaHeight); - maxChartAreaWidth -= minSize.width; - } - - minBoxSizes.push({ - horizontal: isHorizontal, - minSize: minSize, - box: box, - }); - } - - helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize); - - // If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478) - var maxHorizontalLeftPadding = 0; - var maxHorizontalRightPadding = 0; - var maxVerticalTopPadding = 0; - var maxVerticalBottomPadding = 0; - - helpers.each(topBoxes.concat(bottomBoxes), function(horizontalBox) { - if (horizontalBox.getPadding) { - var boxPadding = horizontalBox.getPadding(); - maxHorizontalLeftPadding = Math.max(maxHorizontalLeftPadding, boxPadding.left); - maxHorizontalRightPadding = Math.max(maxHorizontalRightPadding, boxPadding.right); - } - }); - - helpers.each(leftBoxes.concat(rightBoxes), function(verticalBox) { - if (verticalBox.getPadding) { - var boxPadding = verticalBox.getPadding(); - maxVerticalTopPadding = Math.max(maxVerticalTopPadding, boxPadding.top); - maxVerticalBottomPadding = Math.max(maxVerticalBottomPadding, boxPadding.bottom); - } - }); - - // At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could - // be if the axes are drawn at their minimum sizes. - // Steps 5 & 6 - var totalLeftBoxesWidth = leftPadding; - var totalRightBoxesWidth = rightPadding; - var totalTopBoxesHeight = topPadding; - var totalBottomBoxesHeight = bottomPadding; - - // Function to fit a box - function fitBox(box) { - var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBox) { - return minBox.box === box; - }); - - if (minBoxSize) { - if (box.isHorizontal()) { - var scaleMargin = { - left: Math.max(totalLeftBoxesWidth, maxHorizontalLeftPadding), - right: Math.max(totalRightBoxesWidth, maxHorizontalRightPadding), - top: 0, - bottom: 0 - }; - - // Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends - // on the margin. Sometimes they need to increase in size slightly - box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin); + for (var prop in source) { + if (source.hasOwnProperty(prop)) { + value = source[prop]; + type = ({}).toString.call(value); + if (type === '[object Array]') { + target[prop] = value.slice(0); + } else if (type === '[object Number]') { + target[prop] = value; } else { - box.update(minBoxSize.minSize.width, maxChartAreaHeight); + console.error('unexpected color value:', value); } } } - // Update, and calculate the left and right margins for the horizontal boxes - helpers.each(leftBoxes.concat(rightBoxes), fitBox); - - helpers.each(leftBoxes, function(box) { - totalLeftBoxesWidth += box.width; - }); - - helpers.each(rightBoxes, function(box) { - totalRightBoxesWidth += box.width; - }); - - // Set the Left and Right margins for the horizontal boxes - helpers.each(topBoxes.concat(bottomBoxes), fitBox); - - // Figure out how much margin is on the top and bottom of the vertical boxes - helpers.each(topBoxes, function(box) { - totalTopBoxesHeight += box.height; - }); - - helpers.each(bottomBoxes, function(box) { - totalBottomBoxesHeight += box.height; - }); - - function finalFitVerticalBox(box) { - var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minSize) { - return minSize.box === box; - }); - - var scaleMargin = { - left: 0, - right: 0, - top: totalTopBoxesHeight, - bottom: totalBottomBoxesHeight - }; - - if (minBoxSize) { - box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin); - } - } - - // Let the left layout know the final margin - helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox); - - // Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance) - totalLeftBoxesWidth = leftPadding; - totalRightBoxesWidth = rightPadding; - totalTopBoxesHeight = topPadding; - totalBottomBoxesHeight = bottomPadding; - - helpers.each(leftBoxes, function(box) { - totalLeftBoxesWidth += box.width; - }); - - helpers.each(rightBoxes, function(box) { - totalRightBoxesWidth += box.width; - }); - - helpers.each(topBoxes, function(box) { - totalTopBoxesHeight += box.height; - }); - helpers.each(bottomBoxes, function(box) { - totalBottomBoxesHeight += box.height; - }); - - // We may be adding some padding to account for rotated x axis labels - var leftPaddingAddition = Math.max(maxHorizontalLeftPadding - totalLeftBoxesWidth, 0); - totalLeftBoxesWidth += leftPaddingAddition; - totalRightBoxesWidth += Math.max(maxHorizontalRightPadding - totalRightBoxesWidth, 0); - - var topPaddingAddition = Math.max(maxVerticalTopPadding - totalTopBoxesHeight, 0); - totalTopBoxesHeight += topPaddingAddition; - totalBottomBoxesHeight += Math.max(maxVerticalBottomPadding - totalBottomBoxesHeight, 0); - - // Figure out if our chart area changed. This would occur if the dataset layout label rotation - // changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do - // without calling `fit` again - var newMaxChartAreaHeight = height - totalTopBoxesHeight - totalBottomBoxesHeight; - var newMaxChartAreaWidth = width - totalLeftBoxesWidth - totalRightBoxesWidth; - - if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) { - helpers.each(leftBoxes, function(box) { - box.height = newMaxChartAreaHeight; - }); - - helpers.each(rightBoxes, function(box) { - box.height = newMaxChartAreaHeight; - }); - - helpers.each(topBoxes, function(box) { - if (!box.fullWidth) { - box.width = newMaxChartAreaWidth; - } - }); - - helpers.each(bottomBoxes, function(box) { - if (!box.fullWidth) { - box.width = newMaxChartAreaWidth; - } - }); - - maxChartAreaHeight = newMaxChartAreaHeight; - maxChartAreaWidth = newMaxChartAreaWidth; - } - - // Step 7 - Position the boxes - var left = leftPadding + leftPaddingAddition; - var top = topPadding + topPaddingAddition; - - function placeBox(box) { - if (box.isHorizontal()) { - box.left = box.fullWidth ? leftPadding : totalLeftBoxesWidth; - box.right = box.fullWidth ? width - rightPadding : totalLeftBoxesWidth + maxChartAreaWidth; - box.top = top; - box.bottom = top + box.height; - - // Move to next point - top = box.bottom; - - } else { - - box.left = left; - box.right = left + box.width; - box.top = totalTopBoxesHeight; - box.bottom = totalTopBoxesHeight + maxChartAreaHeight; - - // Move to next point - left = box.right; - } - } - - helpers.each(leftBoxes.concat(topBoxes), placeBox); - - // Account for chart width and height - left += maxChartAreaWidth; - top += maxChartAreaHeight; - - helpers.each(rightBoxes, placeBox); - helpers.each(bottomBoxes, placeBox); - - // Step 8 - chart.chartArea = { - left: totalLeftBoxesWidth, - top: totalTopBoxesHeight, - right: totalLeftBoxesWidth + maxChartAreaWidth, - bottom: totalTopBoxesHeight + maxChartAreaHeight - }; - - // Step 9 - helpers.each(chartAreaBoxes, function(box) { - box.left = chart.chartArea.left; - box.top = chart.chartArea.top; - box.right = chart.chartArea.right; - box.bottom = chart.chartArea.bottom; - - box.update(maxChartAreaWidth, maxChartAreaHeight); - }); - } -}; - -},{"46":46}],32:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var helpers = require(46); - -defaults._set('global', { - plugins: {} -}); - -/** - * The plugin service singleton - * @namespace Chart.plugins - * @since 2.1.0 - */ -module.exports = { - /** - * Globally registered plugins. - * @private - */ - _plugins: [], - - /** - * This identifier is used to invalidate the descriptors cache attached to each chart - * when a global plugin is registered or unregistered. In this case, the cache ID is - * incremented and descriptors are regenerated during following API calls. - * @private - */ - _cacheId: 0, - - /** - * Registers the given plugin(s) if not already registered. - * @param {Array|Object} plugins plugin instance(s). - */ - register: function(plugins) { - var p = this._plugins; - ([]).concat(plugins).forEach(function(plugin) { - if (p.indexOf(plugin) === -1) { - p.push(plugin); - } - }); - - this._cacheId++; - }, - - /** - * Unregisters the given plugin(s) only if registered. - * @param {Array|Object} plugins plugin instance(s). - */ - unregister: function(plugins) { - var p = this._plugins; - ([]).concat(plugins).forEach(function(plugin) { - var idx = p.indexOf(plugin); - if (idx !== -1) { - p.splice(idx, 1); - } - }); - - this._cacheId++; - }, - - /** - * Remove all registered plugins. - * @since 2.1.5 - */ - clear: function() { - this._plugins = []; - this._cacheId++; - }, - - /** - * Returns the number of registered plugins? - * @returns {Number} - * @since 2.1.5 - */ - count: function() { - return this._plugins.length; - }, - - /** - * Returns all registered plugin instances. - * @returns {Array} array of plugin objects. - * @since 2.1.5 - */ - getAll: function() { - return this._plugins; - }, - - /** - * Calls enabled plugins for `chart` on the specified hook and with the given args. - * This method immediately returns as soon as a plugin explicitly returns false. The - * returned value can be used, for instance, to interrupt the current action. - * @param {Object} chart - The chart instance for which plugins should be called. - * @param {String} hook - The name of the plugin method to call (e.g. 'beforeUpdate'). - * @param {Array} [args] - Extra arguments to apply to the hook call. - * @returns {Boolean} false if any of the plugins return false, else returns true. - */ - notify: function(chart, hook, args) { - var descriptors = this.descriptors(chart); - var ilen = descriptors.length; - var i, descriptor, plugin, params, method; - - for (i = 0; i < ilen; ++i) { - descriptor = descriptors[i]; - plugin = descriptor.plugin; - method = plugin[hook]; - if (typeof method === 'function') { - params = [chart].concat(args || []); - params.push(descriptor.options); - if (method.apply(plugin, params) === false) { - return false; - } - } - } - - return true; - }, - - /** - * Returns descriptors of enabled plugins for the given chart. - * @returns {Array} [{ plugin, options }] - * @private - */ - descriptors: function(chart) { - var cache = chart.$plugins || (chart.$plugins = {}); - if (cache.id === this._cacheId) { - return cache.descriptors; - } - - var plugins = []; - var descriptors = []; - var config = (chart && chart.config) || {}; - var options = (config.options && config.options.plugins) || {}; - - this._plugins.concat(config.plugins || []).forEach(function(plugin) { - var idx = plugins.indexOf(plugin); - if (idx !== -1) { - return; - } - - var id = plugin.id; - var opts = options[id]; - if (opts === false) { - return; - } - - if (opts === true) { - opts = helpers.clone(defaults.global.plugins[id]); - } - - plugins.push(plugin); - descriptors.push({ - plugin: plugin, - options: opts || {} - }); - }); - - cache.descriptors = descriptors; - cache.id = this._cacheId; - return descriptors; - }, - - /** - * Invalidates cache for the given chart: descriptors hold a reference on plugin option, - * but in some cases, this reference can be changed by the user when updating options. - * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 - * @private - */ - _invalidate: function(chart) { - delete chart.$plugins; - } -}; - -/** - * Plugin extension hooks. - * @interface IPlugin - * @since 2.1.0 - */ -/** - * @method IPlugin#beforeInit - * @desc Called before initializing `chart`. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#afterInit - * @desc Called after `chart` has been initialized and before the first update. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeUpdate - * @desc Called before updating `chart`. If any plugin returns `false`, the update - * is cancelled (and thus subsequent render(s)) until another `update` is triggered. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart update. - */ -/** - * @method IPlugin#afterUpdate - * @desc Called after `chart` has been updated and before rendering. Note that this - * hook will not be called if the chart update has been previously cancelled. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeDatasetsUpdate - * @desc Called before updating the `chart` datasets. If any plugin returns `false`, - * the datasets update is cancelled until another `update` is triggered. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - * @returns {Boolean} false to cancel the datasets update. - * @since version 2.1.5 -*/ -/** - * @method IPlugin#afterDatasetsUpdate - * @desc Called after the `chart` datasets have been updated. Note that this hook - * will not be called if the datasets update has been previously cancelled. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - * @since version 2.1.5 - */ -/** - * @method IPlugin#beforeDatasetUpdate - * @desc Called before updating the `chart` dataset at the given `args.index`. If any plugin - * returns `false`, the datasets update is cancelled until another `update` is triggered. - * @param {Chart} chart - The chart instance. - * @param {Object} args - The call arguments. - * @param {Number} args.index - The dataset index. - * @param {Object} args.meta - The dataset metadata. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart datasets drawing. - */ -/** - * @method IPlugin#afterDatasetUpdate - * @desc Called after the `chart` datasets at the given `args.index` has been updated. Note - * that this hook will not be called if the datasets update has been previously cancelled. - * @param {Chart} chart - The chart instance. - * @param {Object} args - The call arguments. - * @param {Number} args.index - The dataset index. - * @param {Object} args.meta - The dataset metadata. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeLayout - * @desc Called before laying out `chart`. If any plugin returns `false`, - * the layout update is cancelled until another `update` is triggered. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart layout. - */ -/** - * @method IPlugin#afterLayout - * @desc Called after the `chart` has been layed out. Note that this hook will not - * be called if the layout update has been previously cancelled. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeRender - * @desc Called before rendering `chart`. If any plugin returns `false`, - * the rendering is cancelled until another `render` is triggered. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart rendering. - */ -/** - * @method IPlugin#afterRender - * @desc Called after the `chart` has been fully rendered (and animation completed). Note - * that this hook will not be called if the rendering has been previously cancelled. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeDraw - * @desc Called before drawing `chart` at every animation frame specified by the given - * easing value. If any plugin returns `false`, the frame drawing is cancelled until - * another `render` is triggered. - * @param {Chart.Controller} chart - The chart instance. - * @param {Number} easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart drawing. - */ -/** - * @method IPlugin#afterDraw - * @desc Called after the `chart` has been drawn for the specific easing value. Note - * that this hook will not be called if the drawing has been previously cancelled. - * @param {Chart.Controller} chart - The chart instance. - * @param {Number} easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeDatasetsDraw - * @desc Called before drawing the `chart` datasets. If any plugin returns `false`, - * the datasets drawing is cancelled until another `render` is triggered. - * @param {Chart.Controller} chart - The chart instance. - * @param {Number} easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart datasets drawing. - */ -/** - * @method IPlugin#afterDatasetsDraw - * @desc Called after the `chart` datasets have been drawn. Note that this hook - * will not be called if the datasets drawing has been previously cancelled. - * @param {Chart.Controller} chart - The chart instance. - * @param {Number} easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeDatasetDraw - * @desc Called before drawing the `chart` dataset at the given `args.index` (datasets - * are drawn in the reverse order). If any plugin returns `false`, the datasets drawing - * is cancelled until another `render` is triggered. - * @param {Chart} chart - The chart instance. - * @param {Object} args - The call arguments. - * @param {Number} args.index - The dataset index. - * @param {Object} args.meta - The dataset metadata. - * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart datasets drawing. - */ -/** - * @method IPlugin#afterDatasetDraw - * @desc Called after the `chart` datasets at the given `args.index` have been drawn - * (datasets are drawn in the reverse order). Note that this hook will not be called - * if the datasets drawing has been previously cancelled. - * @param {Chart} chart - The chart instance. - * @param {Object} args - The call arguments. - * @param {Number} args.index - The dataset index. - * @param {Object} args.meta - The dataset metadata. - * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeTooltipDraw - * @desc Called before drawing the `tooltip`. If any plugin returns `false`, - * the tooltip drawing is cancelled until another `render` is triggered. - * @param {Chart} chart - The chart instance. - * @param {Object} args - The call arguments. - * @param {Object} args.tooltip - The tooltip. - * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - * @returns {Boolean} `false` to cancel the chart tooltip drawing. - */ -/** - * @method IPlugin#afterTooltipDraw - * @desc Called after drawing the `tooltip`. Note that this hook will not - * be called if the tooltip drawing has been previously cancelled. - * @param {Chart} chart - The chart instance. - * @param {Object} args - The call arguments. - * @param {Object} args.tooltip - The tooltip. - * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#beforeEvent - * @desc Called before processing the specified `event`. If any plugin returns `false`, - * the event will be discarded. - * @param {Chart.Controller} chart - The chart instance. - * @param {IEvent} event - The event object. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#afterEvent - * @desc Called after the `event` has been consumed. Note that this hook - * will not be called if the `event` has been previously discarded. - * @param {Chart.Controller} chart - The chart instance. - * @param {IEvent} event - The event object. - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#resize - * @desc Called after the chart as been resized. - * @param {Chart.Controller} chart - The chart instance. - * @param {Number} size - The new canvas display size (eq. canvas.style width & height). - * @param {Object} options - The plugin options. - */ -/** - * @method IPlugin#destroy - * @desc Called after the chart as been destroyed. - * @param {Chart.Controller} chart - The chart instance. - * @param {Object} options - The plugin options. - */ - -},{"26":26,"46":46}],33:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var Element = require(27); -var helpers = require(46); -var Ticks = require(35); - -defaults._set('scale', { - display: true, - position: 'left', - offset: false, - - // grid line settings - gridLines: { - display: true, - color: 'rgba(0, 0, 0, 0.1)', - lineWidth: 1, - drawBorder: true, - drawOnChartArea: true, - drawTicks: true, - tickMarkLength: 10, - zeroLineWidth: 1, - zeroLineColor: 'rgba(0,0,0,0.25)', - zeroLineBorderDash: [], - zeroLineBorderDashOffset: 0.0, - offsetGridLines: false, - borderDash: [], - borderDashOffset: 0.0 - }, - - // scale label - scaleLabel: { - // display property - display: false, - - // actual label - labelString: '', - - // line height - lineHeight: 1.2, - - // top/bottom padding - padding: { - top: 4, - bottom: 4 - } - }, - - // label settings - ticks: { - beginAtZero: false, - minRotation: 0, - maxRotation: 50, - mirror: false, - padding: 0, - reverse: false, - display: true, - autoSkip: true, - autoSkipPadding: 0, - labelOffset: 0, - // We pass through arrays to be rendered as multiline labels, we convert Others to strings here. - callback: Ticks.formatters.values, - minor: {}, - major: {} - } -}); - -function labelsFromTicks(ticks) { - var labels = []; - var i, ilen; - - for (i = 0, ilen = ticks.length; i < ilen; ++i) { - labels.push(ticks[i].label); - } - - return labels; -} - -function getLineValue(scale, index, offsetGridLines) { - var lineValue = scale.getPixelForTick(index); - - if (offsetGridLines) { - if (index === 0) { - lineValue -= (scale.getPixelForTick(1) - lineValue) / 2; - } else { - lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2; - } - } - return lineValue; -} - -function computeTextSize(context, tick, font) { - return helpers.isArray(tick) ? - helpers.longestText(context, font, tick) : - context.measureText(tick).width; -} - -function parseFontOptions(options) { - var valueOrDefault = helpers.valueOrDefault; - var globalDefaults = defaults.global; - var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize); - var style = valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle); - var family = valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily); - - return { - size: size, - style: style, - family: family, - font: helpers.fontString(size, style, family) - }; -} - -function parseLineHeight(options) { - return helpers.options.toLineHeight( - helpers.valueOrDefault(options.lineHeight, 1.2), - helpers.valueOrDefault(options.fontSize, defaults.global.defaultFontSize)); -} - -module.exports = Element.extend({ - /** - * Get the padding needed for the scale - * @method getPadding - * @private - * @returns {Padding} the necessary padding - */ - getPadding: function() { - var me = this; - return { - left: me.paddingLeft || 0, - top: me.paddingTop || 0, - right: me.paddingRight || 0, - bottom: me.paddingBottom || 0 - }; - }, - - /** - * Returns the scale tick objects ({label, major}) - * @since 2.7 - */ - getTicks: function() { - return this._ticks; - }, - - // These methods are ordered by lifecyle. Utilities then follow. - // Any function defined here is inherited by all scale types. - // Any function can be extended by the scale type - - mergeTicksOptions: function() { - var ticks = this.options.ticks; - if (ticks.minor === false) { - ticks.minor = { - display: false - }; - } - if (ticks.major === false) { - ticks.major = { - display: false - }; - } - for (var key in ticks) { - if (key !== 'major' && key !== 'minor') { - if (typeof ticks.minor[key] === 'undefined') { - ticks.minor[key] = ticks[key]; - } - if (typeof ticks.major[key] === 'undefined') { - ticks.major[key] = ticks[key]; - } - } - } - }, - beforeUpdate: function() { - helpers.callback(this.options.beforeUpdate, [this]); - }, - - update: function(maxWidth, maxHeight, margins) { - var me = this; - var i, ilen, labels, label, ticks, tick; - - // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) - me.beforeUpdate(); - - // Absorb the master measurements - me.maxWidth = maxWidth; - me.maxHeight = maxHeight; - me.margins = helpers.extend({ - left: 0, - right: 0, - top: 0, - bottom: 0 - }, margins); - me.longestTextCache = me.longestTextCache || {}; - - // Dimensions - me.beforeSetDimensions(); - me.setDimensions(); - me.afterSetDimensions(); - - // Data min/max - me.beforeDataLimits(); - me.determineDataLimits(); - me.afterDataLimits(); - - // Ticks - `this.ticks` is now DEPRECATED! - // Internal ticks are now stored as objects in the PRIVATE `this._ticks` member - // and must not be accessed directly from outside this class. `this.ticks` being - // around for long time and not marked as private, we can't change its structure - // without unexpected breaking changes. If you need to access the scale ticks, - // use scale.getTicks() instead. - - me.beforeBuildTicks(); - - // New implementations should return an array of objects but for BACKWARD COMPAT, - // we still support no return (`this.ticks` internally set by calling this method). - ticks = me.buildTicks() || []; - - me.afterBuildTicks(); - - me.beforeTickToLabelConversion(); - - // New implementations should return the formatted tick labels but for BACKWARD - // COMPAT, we still support no return (`this.ticks` internally changed by calling - // this method and supposed to contain only string values). - labels = me.convertTicksToLabels(ticks) || me.ticks; - - me.afterTickToLabelConversion(); - - me.ticks = labels; // BACKWARD COMPATIBILITY - - // IMPORTANT: from this point, we consider that `this.ticks` will NEVER change! - - // BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`) - for (i = 0, ilen = labels.length; i < ilen; ++i) { - label = labels[i]; - tick = ticks[i]; - if (!tick) { - ticks.push(tick = { - label: label, - major: false - }); - } else { - tick.label = label; - } - } - - me._ticks = ticks; - - // Tick Rotation - me.beforeCalculateTickRotation(); - me.calculateTickRotation(); - me.afterCalculateTickRotation(); - // Fit - me.beforeFit(); - me.fit(); - me.afterFit(); - // - me.afterUpdate(); - - return me.minSize; - - }, - afterUpdate: function() { - helpers.callback(this.options.afterUpdate, [this]); - }, - - // - - beforeSetDimensions: function() { - helpers.callback(this.options.beforeSetDimensions, [this]); - }, - setDimensions: function() { - var me = this; - // Set the unconstrained dimension before label rotation - if (me.isHorizontal()) { - // Reset position before calculating rotation - me.width = me.maxWidth; - me.left = 0; - me.right = me.width; - } else { - me.height = me.maxHeight; - - // Reset position before calculating rotation - me.top = 0; - me.bottom = me.height; - } - - // Reset padding - me.paddingLeft = 0; - me.paddingTop = 0; - me.paddingRight = 0; - me.paddingBottom = 0; - }, - afterSetDimensions: function() { - helpers.callback(this.options.afterSetDimensions, [this]); - }, - - // Data limits - beforeDataLimits: function() { - helpers.callback(this.options.beforeDataLimits, [this]); - }, - determineDataLimits: helpers.noop, - afterDataLimits: function() { - helpers.callback(this.options.afterDataLimits, [this]); - }, - - // - beforeBuildTicks: function() { - helpers.callback(this.options.beforeBuildTicks, [this]); - }, - buildTicks: helpers.noop, - afterBuildTicks: function() { - helpers.callback(this.options.afterBuildTicks, [this]); - }, - - beforeTickToLabelConversion: function() { - helpers.callback(this.options.beforeTickToLabelConversion, [this]); - }, - convertTicksToLabels: function() { - var me = this; - // Convert ticks to strings - var tickOpts = me.options.ticks; - me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this); - }, - afterTickToLabelConversion: function() { - helpers.callback(this.options.afterTickToLabelConversion, [this]); - }, - - // - - beforeCalculateTickRotation: function() { - helpers.callback(this.options.beforeCalculateTickRotation, [this]); - }, - calculateTickRotation: function() { - var me = this; - var context = me.ctx; - var tickOpts = me.options.ticks; - var labels = labelsFromTicks(me._ticks); - - // Get the width of each grid by calculating the difference - // between x offsets between 0 and 1. - var tickFont = parseFontOptions(tickOpts); - context.font = tickFont.font; - - var labelRotation = tickOpts.minRotation || 0; - - if (labels.length && me.options.display && me.isHorizontal()) { - var originalLabelWidth = helpers.longestText(context, tickFont.font, labels, me.longestTextCache); - var labelWidth = originalLabelWidth; - var cosRotation, sinRotation; - - // Allow 3 pixels x2 padding either side for label readability - var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6; - - // Max label rotation can be set or default to 90 - also act as a loop counter - while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) { - var angleRadians = helpers.toRadians(labelRotation); - cosRotation = Math.cos(angleRadians); - sinRotation = Math.sin(angleRadians); - - if (sinRotation * originalLabelWidth > me.maxHeight) { - // go back one step - labelRotation--; - break; - } - - labelRotation++; - labelWidth = cosRotation * originalLabelWidth; - } - } - - me.labelRotation = labelRotation; - }, - afterCalculateTickRotation: function() { - helpers.callback(this.options.afterCalculateTickRotation, [this]); - }, - - // - - beforeFit: function() { - helpers.callback(this.options.beforeFit, [this]); - }, - fit: function() { - var me = this; - // Reset - var minSize = me.minSize = { - width: 0, - height: 0 - }; - - var labels = labelsFromTicks(me._ticks); - - var opts = me.options; - var tickOpts = opts.ticks; - var scaleLabelOpts = opts.scaleLabel; - var gridLineOpts = opts.gridLines; - var display = opts.display; - var isHorizontal = me.isHorizontal(); - - var tickFont = parseFontOptions(tickOpts); - var tickMarkLength = opts.gridLines.tickMarkLength; - - // Width - if (isHorizontal) { - // subtract the margins to line up with the chartArea if we are a full width scale - minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth; - } else { - minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0; - } - - // height - if (isHorizontal) { - minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0; - } else { - minSize.height = me.maxHeight; // fill all the height - } - - // Are we showing a title for the scale? - if (scaleLabelOpts.display && display) { - var scaleLabelLineHeight = parseLineHeight(scaleLabelOpts); - var scaleLabelPadding = helpers.options.toPadding(scaleLabelOpts.padding); - var deltaHeight = scaleLabelLineHeight + scaleLabelPadding.height; - - if (isHorizontal) { - minSize.height += deltaHeight; - } else { - minSize.width += deltaHeight; - } - } - - // Don't bother fitting the ticks if we are not showing them - if (tickOpts.display && display) { - var largestTextWidth = helpers.longestText(me.ctx, tickFont.font, labels, me.longestTextCache); - var tallestLabelHeightInLines = helpers.numberOfLabelLines(labels); - var lineSpace = tickFont.size * 0.5; - var tickPadding = me.options.ticks.padding; - - if (isHorizontal) { - // A horizontal axis is more constrained by the height. - me.longestLabelWidth = largestTextWidth; - - var angleRadians = helpers.toRadians(me.labelRotation); - var cosRotation = Math.cos(angleRadians); - var sinRotation = Math.sin(angleRadians); - - // TODO - improve this calculation - var labelHeight = (sinRotation * largestTextWidth) - + (tickFont.size * tallestLabelHeightInLines) - + (lineSpace * (tallestLabelHeightInLines - 1)) - + lineSpace; // padding - - minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding); - - me.ctx.font = tickFont.font; - var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.font); - var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.font); - - // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned - // which means that the right padding is dominated by the font height - if (me.labelRotation !== 0) { - me.paddingLeft = opts.position === 'bottom' ? (cosRotation * firstLabelWidth) + 3 : (cosRotation * lineSpace) + 3; // add 3 px to move away from canvas edges - me.paddingRight = opts.position === 'bottom' ? (cosRotation * lineSpace) + 3 : (cosRotation * lastLabelWidth) + 3; - } else { - me.paddingLeft = firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges - me.paddingRight = lastLabelWidth / 2 + 3; - } - } else { - // A vertical axis is more constrained by the width. Labels are the - // dominant factor here, so get that length first and account for padding - if (tickOpts.mirror) { - largestTextWidth = 0; - } else { - // use lineSpace for consistency with horizontal axis - // tickPadding is not implemented for horizontal - largestTextWidth += tickPadding + lineSpace; - } - - minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth); - - me.paddingTop = tickFont.size / 2; - me.paddingBottom = tickFont.size / 2; - } - } - - me.handleMargins(); - - me.width = minSize.width; - me.height = minSize.height; - }, - - /** - * Handle margins and padding interactions - * @private - */ - handleMargins: function() { - var me = this; - if (me.margins) { - me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0); - me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0); - me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0); - me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0); - } - }, - - afterFit: function() { - helpers.callback(this.options.afterFit, [this]); - }, - - // Shared Methods - isHorizontal: function() { - return this.options.position === 'top' || this.options.position === 'bottom'; - }, - isFullWidth: function() { - return (this.options.fullWidth); - }, - - // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not - getRightValue: function(rawValue) { - // Null and undefined values first - if (helpers.isNullOrUndef(rawValue)) { - return NaN; - } - // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values - if (typeof rawValue === 'number' && !isFinite(rawValue)) { - return NaN; - } - // If it is in fact an object, dive in one more level - if (rawValue) { - if (this.isHorizontal()) { - if (rawValue.x !== undefined) { - return this.getRightValue(rawValue.x); - } - } else if (rawValue.y !== undefined) { - return this.getRightValue(rawValue.y); - } - } - - // Value is good, return it - return rawValue; - }, - - /** - * Used to get the value to display in the tooltip for the data at the given index - * @param index - * @param datasetIndex - */ - getLabelForIndex: helpers.noop, - - /** - * Returns the location of the given data point. Value can either be an index or a numerical value - * The coordinate (0, 0) is at the upper-left corner of the canvas - * @param value - * @param index - * @param datasetIndex - */ - getPixelForValue: helpers.noop, - - /** - * Used to get the data value from a given pixel. This is the inverse of getPixelForValue - * The coordinate (0, 0) is at the upper-left corner of the canvas - * @param pixel - */ - getValueForPixel: helpers.noop, - - /** - * Returns the location of the tick at the given index - * The coordinate (0, 0) is at the upper-left corner of the canvas - */ - getPixelForTick: function(index) { - var me = this; - var offset = me.options.offset; - if (me.isHorizontal()) { - var innerWidth = me.width - (me.paddingLeft + me.paddingRight); - var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1); - var pixel = (tickWidth * index) + me.paddingLeft; - - if (offset) { - pixel += tickWidth / 2; - } - - var finalVal = me.left + Math.round(pixel); - finalVal += me.isFullWidth() ? me.margins.left : 0; - return finalVal; - } - var innerHeight = me.height - (me.paddingTop + me.paddingBottom); - return me.top + (index * (innerHeight / (me._ticks.length - 1))); - }, - - /** - * Utility for getting the pixel location of a percentage of scale - * The coordinate (0, 0) is at the upper-left corner of the canvas - */ - getPixelForDecimal: function(decimal) { - var me = this; - if (me.isHorizontal()) { - var innerWidth = me.width - (me.paddingLeft + me.paddingRight); - var valueOffset = (innerWidth * decimal) + me.paddingLeft; - - var finalVal = me.left + Math.round(valueOffset); - finalVal += me.isFullWidth() ? me.margins.left : 0; - return finalVal; - } - return me.top + (decimal * me.height); - }, - - /** - * Returns the pixel for the minimum chart value - * The coordinate (0, 0) is at the upper-left corner of the canvas - */ - getBasePixel: function() { - return this.getPixelForValue(this.getBaseValue()); - }, - - getBaseValue: function() { - var me = this; - var min = me.min; - var max = me.max; - - return me.beginAtZero ? 0 : - min < 0 && max < 0 ? max : - min > 0 && max > 0 ? min : - 0; - }, - - /** - * Returns a subset of ticks to be plotted to avoid overlapping labels. - * @private - */ - _autoSkip: function(ticks) { - var skipRatio; - var me = this; - var isHorizontal = me.isHorizontal(); - var optionTicks = me.options.ticks.minor; - var tickCount = ticks.length; - var labelRotationRadians = helpers.toRadians(me.labelRotation); - var cosRotation = Math.cos(labelRotationRadians); - var longestRotatedLabel = me.longestLabelWidth * cosRotation; - var result = []; - var i, tick, shouldSkip; - - // figure out the maximum number of gridlines to show - var maxTicks; - if (optionTicks.maxTicksLimit) { - maxTicks = optionTicks.maxTicksLimit; - } - - if (isHorizontal) { - skipRatio = false; - - if ((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount > (me.width - (me.paddingLeft + me.paddingRight))) { - skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount) / (me.width - (me.paddingLeft + me.paddingRight))); - } - - // if they defined a max number of optionTicks, - // increase skipRatio until that number is met - if (maxTicks && tickCount > maxTicks) { - skipRatio = Math.max(skipRatio, Math.floor(tickCount / maxTicks)); - } - } - - for (i = 0; i < tickCount; i++) { - tick = ticks[i]; - - // Since we always show the last tick,we need may need to hide the last shown one before - shouldSkip = (skipRatio > 1 && i % skipRatio > 0) || (i % skipRatio === 0 && i + skipRatio >= tickCount); - if (shouldSkip && i !== tickCount - 1) { - // leave tick in place but make sure it's not displayed (#4635) - delete tick.label; - } - result.push(tick); - } return result; - }, - - // Actually draw the scale on the canvas - // @param {rectangle} chartArea : the area of the chart to draw full grid lines on - draw: function(chartArea) { - var me = this; - var options = me.options; - if (!options.display) { - return; - } - - var context = me.ctx; - var globalDefaults = defaults.global; - var optionTicks = options.ticks.minor; - var optionMajorTicks = options.ticks.major || optionTicks; - var gridLines = options.gridLines; - var scaleLabel = options.scaleLabel; - - var isRotated = me.labelRotation !== 0; - var isHorizontal = me.isHorizontal(); - - var ticks = optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks(); - var tickFontColor = helpers.valueOrDefault(optionTicks.fontColor, globalDefaults.defaultFontColor); - var tickFont = parseFontOptions(optionTicks); - var majorTickFontColor = helpers.valueOrDefault(optionMajorTicks.fontColor, globalDefaults.defaultFontColor); - var majorTickFont = parseFontOptions(optionMajorTicks); - - var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0; - - var scaleLabelFontColor = helpers.valueOrDefault(scaleLabel.fontColor, globalDefaults.defaultFontColor); - var scaleLabelFont = parseFontOptions(scaleLabel); - var scaleLabelPadding = helpers.options.toPadding(scaleLabel.padding); - var labelRotationRadians = helpers.toRadians(me.labelRotation); - - var itemsToDraw = []; - - var axisWidth = me.options.gridLines.lineWidth; - var xTickStart = options.position === 'right' ? me.left : me.right - axisWidth - tl; - var xTickEnd = options.position === 'right' ? me.left + tl : me.right; - var yTickStart = options.position === 'bottom' ? me.top + axisWidth : me.bottom - tl - axisWidth; - var yTickEnd = options.position === 'bottom' ? me.top + axisWidth + tl : me.bottom + axisWidth; - - helpers.each(ticks, function(tick, index) { - // autoskipper skipped this tick (#4635) - if (helpers.isNullOrUndef(tick.label)) { - return; - } - - var label = tick.label; - var lineWidth, lineColor, borderDash, borderDashOffset; - if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) { - // Draw the first index specially - lineWidth = gridLines.zeroLineWidth; - lineColor = gridLines.zeroLineColor; - borderDash = gridLines.zeroLineBorderDash; - borderDashOffset = gridLines.zeroLineBorderDashOffset; - } else { - lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, index); - lineColor = helpers.valueAtIndexOrDefault(gridLines.color, index); - borderDash = helpers.valueOrDefault(gridLines.borderDash, globalDefaults.borderDash); - borderDashOffset = helpers.valueOrDefault(gridLines.borderDashOffset, globalDefaults.borderDashOffset); - } - - // Common properties - var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY; - var textAlign = 'middle'; - var textBaseline = 'middle'; - var tickPadding = optionTicks.padding; - - if (isHorizontal) { - var labelYOffset = tl + tickPadding; - - if (options.position === 'bottom') { - // bottom - textBaseline = !isRotated ? 'top' : 'middle'; - textAlign = !isRotated ? 'center' : 'right'; - labelY = me.top + labelYOffset; - } else { - // top - textBaseline = !isRotated ? 'bottom' : 'middle'; - textAlign = !isRotated ? 'center' : 'left'; - labelY = me.bottom - labelYOffset; - } - - var xLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1); - if (xLineValue < me.left) { - lineColor = 'rgba(0,0,0,0)'; - } - xLineValue += helpers.aliasPixel(lineWidth); - - labelX = me.getPixelForTick(index) + optionTicks.labelOffset; // x values for optionTicks (need to consider offsetLabel option) - - tx1 = tx2 = x1 = x2 = xLineValue; - ty1 = yTickStart; - ty2 = yTickEnd; - y1 = chartArea.top; - y2 = chartArea.bottom + axisWidth; - } else { - var isLeft = options.position === 'left'; - var labelXOffset; - - if (optionTicks.mirror) { - textAlign = isLeft ? 'left' : 'right'; - labelXOffset = tickPadding; - } else { - textAlign = isLeft ? 'right' : 'left'; - labelXOffset = tl + tickPadding; - } - - labelX = isLeft ? me.right - labelXOffset : me.left + labelXOffset; - - var yLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1); - if (yLineValue < me.top) { - lineColor = 'rgba(0,0,0,0)'; - } - yLineValue += helpers.aliasPixel(lineWidth); - - labelY = me.getPixelForTick(index) + optionTicks.labelOffset; - - tx1 = xTickStart; - tx2 = xTickEnd; - x1 = chartArea.left; - x2 = chartArea.right + axisWidth; - ty1 = ty2 = y1 = y2 = yLineValue; - } - - itemsToDraw.push({ - tx1: tx1, - ty1: ty1, - tx2: tx2, - ty2: ty2, - x1: x1, - y1: y1, - x2: x2, - y2: y2, - labelX: labelX, - labelY: labelY, - glWidth: lineWidth, - glColor: lineColor, - glBorderDash: borderDash, - glBorderDashOffset: borderDashOffset, - rotation: -1 * labelRotationRadians, - label: label, - major: tick.major, - textBaseline: textBaseline, - textAlign: textAlign - }); - }); - - // Draw all of the tick labels, tick marks, and grid lines at the correct places - helpers.each(itemsToDraw, function(itemToDraw) { - if (gridLines.display) { - context.save(); - context.lineWidth = itemToDraw.glWidth; - context.strokeStyle = itemToDraw.glColor; - if (context.setLineDash) { - context.setLineDash(itemToDraw.glBorderDash); - context.lineDashOffset = itemToDraw.glBorderDashOffset; - } - - context.beginPath(); - - if (gridLines.drawTicks) { - context.moveTo(itemToDraw.tx1, itemToDraw.ty1); - context.lineTo(itemToDraw.tx2, itemToDraw.ty2); - } - - if (gridLines.drawOnChartArea) { - context.moveTo(itemToDraw.x1, itemToDraw.y1); - context.lineTo(itemToDraw.x2, itemToDraw.y2); - } - - context.stroke(); - context.restore(); - } - - if (optionTicks.display) { - // Make sure we draw text in the correct color and font - context.save(); - context.translate(itemToDraw.labelX, itemToDraw.labelY); - context.rotate(itemToDraw.rotation); - context.font = itemToDraw.major ? majorTickFont.font : tickFont.font; - context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor; - context.textBaseline = itemToDraw.textBaseline; - context.textAlign = itemToDraw.textAlign; - - var label = itemToDraw.label; - if (helpers.isArray(label)) { - var lineCount = label.length; - var lineHeight = tickFont.size * 1.5; - var y = me.isHorizontal() ? 0 : -lineHeight * (lineCount - 1) / 2; - - for (var i = 0; i < lineCount; ++i) { - // We just make sure the multiline element is a string here.. - context.fillText('' + label[i], 0, y); - // apply same lineSpacing as calculated @ L#320 - y += lineHeight; - } - } else { - context.fillText(label, 0, 0); - } - context.restore(); - } - }); - - if (scaleLabel.display) { - // Draw the scale label - var scaleLabelX; - var scaleLabelY; - var rotation = 0; - var halfLineHeight = parseLineHeight(scaleLabel) / 2; - - if (isHorizontal) { - scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width - scaleLabelY = options.position === 'bottom' - ? me.bottom - halfLineHeight - scaleLabelPadding.bottom - : me.top + halfLineHeight + scaleLabelPadding.top; - } else { - var isLeft = options.position === 'left'; - scaleLabelX = isLeft - ? me.left + halfLineHeight + scaleLabelPadding.top - : me.right - halfLineHeight - scaleLabelPadding.top; - scaleLabelY = me.top + ((me.bottom - me.top) / 2); - rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI; - } - - context.save(); - context.translate(scaleLabelX, scaleLabelY); - context.rotate(rotation); - context.textAlign = 'center'; - context.textBaseline = 'middle'; - context.fillStyle = scaleLabelFontColor; // render in correct colour - context.font = scaleLabelFont.font; - context.fillText(scaleLabel.labelString, 0, 0); - context.restore(); - } - - if (gridLines.drawBorder) { - // Draw the line at the edge of the axis - context.lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, 0); - context.strokeStyle = helpers.valueAtIndexOrDefault(gridLines.color, 0); - var x1 = me.left; - var x2 = me.right + axisWidth; - var y1 = me.top; - var y2 = me.bottom + axisWidth; - - var aliasPixel = helpers.aliasPixel(context.lineWidth); - if (isHorizontal) { - y1 = y2 = options.position === 'top' ? me.bottom : me.top; - y1 += aliasPixel; - y2 += aliasPixel; - } else { - x1 = x2 = options.position === 'left' ? me.right : me.left; - x1 += aliasPixel; - x2 += aliasPixel; - } - - context.beginPath(); - context.moveTo(x1, y1); - context.lineTo(x2, y2); - context.stroke(); - } - } -}); - -},{"26":26,"27":27,"35":35,"46":46}],34:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var helpers = require(46); -var layouts = require(31); - -module.exports = { - // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then - // use the new chart options to grab the correct scale - constructors: {}, - // Use a registration function so that we can move to an ES6 map when we no longer need to support - // old browsers - - // Scale config defaults - defaults: {}, - registerScaleType: function(type, scaleConstructor, scaleDefaults) { - this.constructors[type] = scaleConstructor; - this.defaults[type] = helpers.clone(scaleDefaults); - }, - getScaleConstructor: function(type) { - return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined; - }, - getScaleDefaults: function(type) { - // Return the scale defaults merged with the global settings so that we always use the latest ones - return this.defaults.hasOwnProperty(type) ? helpers.merge({}, [defaults.scale, this.defaults[type]]) : {}; - }, - updateScaleDefaults: function(type, additions) { - var me = this; - if (me.defaults.hasOwnProperty(type)) { - me.defaults[type] = helpers.extend(me.defaults[type], additions); - } - }, - addScalesToLayout: function(chart) { - // Adds each scale to the chart.boxes array to be sized accordingly - helpers.each(chart.scales, function(scale) { - // Set ILayoutItem parameters for backwards compatibility - scale.fullWidth = scale.options.fullWidth; - scale.position = scale.options.position; - scale.weight = scale.options.weight; - layouts.addBox(chart, scale); - }); } }; -},{"26":26,"31":31,"46":46}],35:[function(require,module,exports){ -'use strict'; - -var helpers = require(46); - -/** - * Namespace to hold static tick generation functions - * @namespace Chart.Ticks - */ -module.exports = { - /** - * Namespace to hold formatters for different types of ticks - * @namespace Chart.Ticks.formatters - */ - formatters: { - /** - * Formatter for value labels - * @method Chart.Ticks.formatters.values - * @param value the value to display - * @return {String|Array} the label to display - */ - values: function(value) { - return helpers.isArray(value) ? value : '' + value; - }, - - /** - * Formatter for linear numeric ticks - * @method Chart.Ticks.formatters.linear - * @param tickValue {Number} the value to be formatted - * @param index {Number} the position of the tickValue parameter in the ticks array - * @param ticks {Array} the list of ticks being converted - * @return {String} string representation of the tickValue parameter - */ - linear: function(tickValue, index, ticks) { - // If we have lots of ticks, don't use the ones - var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0]; - - // If we have a number like 2.5 as the delta, figure out how many decimal places we need - if (Math.abs(delta) > 1) { - if (tickValue !== Math.floor(tickValue)) { - // not an integer - delta = tickValue - Math.floor(tickValue); - } - } - - var logDelta = helpers.log10(Math.abs(delta)); - var tickString = ''; - - if (tickValue !== 0) { - var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1])); - if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation - var logTick = helpers.log10(Math.abs(tickValue)); - tickString = tickValue.toExponential(Math.floor(logTick) - Math.floor(logDelta)); - } else { - var numDecimal = -1 * Math.floor(logDelta); - numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places - tickString = tickValue.toFixed(numDecimal); - } - } else { - tickString = '0'; // never show decimal places for 0 - } - - return tickString; - }, - - logarithmic: function(tickValue, index, ticks) { - var remain = tickValue / (Math.pow(10, Math.floor(helpers.log10(tickValue)))); - - if (tickValue === 0) { - return '0'; - } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) { - return tickValue.toExponential(); - } - return ''; - } - } +Color.prototype.spaces = { + rgb: ['red', 'green', 'blue'], + hsl: ['hue', 'saturation', 'lightness'], + hsv: ['hue', 'saturation', 'value'], + hwb: ['hue', 'whiteness', 'blackness'], + cmyk: ['cyan', 'magenta', 'yellow', 'black'] }; -},{"46":46}],36:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var Element = require(27); -var helpers = require(46); - -defaults._set('global', { - tooltips: { - enabled: true, - custom: null, - mode: 'nearest', - position: 'average', - intersect: true, - backgroundColor: 'rgba(0,0,0,0.8)', - titleFontStyle: 'bold', - titleSpacing: 2, - titleMarginBottom: 6, - titleFontColor: '#fff', - titleAlign: 'left', - bodySpacing: 2, - bodyFontColor: '#fff', - bodyAlign: 'left', - footerFontStyle: 'bold', - footerSpacing: 2, - footerMarginTop: 6, - footerFontColor: '#fff', - footerAlign: 'left', - yPadding: 6, - xPadding: 6, - caretPadding: 2, - caretSize: 5, - cornerRadius: 6, - multiKeyBackground: '#fff', - displayColors: true, - borderColor: 'rgba(0,0,0,0)', - borderWidth: 0, - callbacks: { - // Args are: (tooltipItems, data) - beforeTitle: helpers.noop, - title: function(tooltipItems, data) { - // Pick first xLabel for now - var title = ''; - var labels = data.labels; - var labelCount = labels ? labels.length : 0; - - if (tooltipItems.length > 0) { - var item = tooltipItems[0]; - - if (item.xLabel) { - title = item.xLabel; - } else if (labelCount > 0 && item.index < labelCount) { - title = labels[item.index]; - } - } - - return title; - }, - afterTitle: helpers.noop, - - // Args are: (tooltipItems, data) - beforeBody: helpers.noop, - - // Args are: (tooltipItem, data) - beforeLabel: helpers.noop, - label: function(tooltipItem, data) { - var label = data.datasets[tooltipItem.datasetIndex].label || ''; - - if (label) { - label += ': '; - } - label += tooltipItem.yLabel; - return label; - }, - labelColor: function(tooltipItem, chart) { - var meta = chart.getDatasetMeta(tooltipItem.datasetIndex); - var activeElement = meta.data[tooltipItem.index]; - var view = activeElement._view; - return { - borderColor: view.borderColor, - backgroundColor: view.backgroundColor - }; - }, - labelTextColor: function() { - return this._options.bodyFontColor; - }, - afterLabel: helpers.noop, - - // Args are: (tooltipItems, data) - afterBody: helpers.noop, - - // Args are: (tooltipItems, data) - beforeFooter: helpers.noop, - footer: helpers.noop, - afterFooter: helpers.noop - } - } -}); - -var positioners = { - /** - * Average mode places the tooltip at the average position of the elements shown - * @function Chart.Tooltip.positioners.average - * @param elements {ChartElement[]} the elements being displayed in the tooltip - * @returns {Point} tooltip position - */ - average: function(elements) { - if (!elements.length) { - return false; - } - - var i, len; - var x = 0; - var y = 0; - var count = 0; - - for (i = 0, len = elements.length; i < len; ++i) { - var el = elements[i]; - if (el && el.hasValue()) { - var pos = el.tooltipPosition(); - x += pos.x; - y += pos.y; - ++count; - } - } - - return { - x: Math.round(x / count), - y: Math.round(y / count) - }; - }, - - /** - * Gets the tooltip position nearest of the item nearest to the event position - * @function Chart.Tooltip.positioners.nearest - * @param elements {Chart.Element[]} the tooltip elements - * @param eventPosition {Point} the position of the event in canvas coordinates - * @returns {Point} the tooltip position - */ - nearest: function(elements, eventPosition) { - var x = eventPosition.x; - var y = eventPosition.y; - var minDistance = Number.POSITIVE_INFINITY; - var i, len, nearestElement; - - for (i = 0, len = elements.length; i < len; ++i) { - var el = elements[i]; - if (el && el.hasValue()) { - var center = el.getCenterPoint(); - var d = helpers.distanceBetweenPoints(eventPosition, center); - - if (d < minDistance) { - minDistance = d; - nearestElement = el; - } - } - } - - if (nearestElement) { - var tp = nearestElement.tooltipPosition(); - x = tp.x; - y = tp.y; - } - - return { - x: x, - y: y - }; - } +Color.prototype.maxes = { + rgb: [255, 255, 255], + hsl: [360, 100, 100], + hsv: [360, 100, 100], + hwb: [360, 100, 100], + cmyk: [100, 100, 100, 100] }; -/** - * Helper method to merge the opacity into a color - */ -function mergeOpacity(colorString, opacity) { - var color = helpers.color(colorString); - return color.alpha(opacity * color.alpha()).rgbaString(); -} +Color.prototype.getValues = function (space) { + var values = this.values; + var vals = {}; -// Helper to push or concat based on if the 2nd parameter is an array or not -function pushOrConcat(base, toPush) { - if (toPush) { - if (helpers.isArray(toPush)) { - // base = base.concat(toPush); - Array.prototype.push.apply(base, toPush); - } else { - base.push(toPush); - } + for (var i = 0; i < space.length; i++) { + vals[space.charAt(i)] = values[space][i]; } - return base; -} - -/** - * Returns array of strings split by newline - * @param {String} value - The value to split by newline. - * @returns {Array} value if newline present - Returned from String split() method - * @function - */ -function splitNewlines(str) { - if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) { - return str.split('\n'); - } - return str; -} - - -// Private helper to create a tooltip item model -// @param element : the chart element (point, arc, bar) to create the tooltip item for -// @return : new tooltip item -function createTooltipItem(element) { - var xScale = element._xScale; - var yScale = element._yScale || element._scale; // handle radar || polarArea charts - var index = element._index; - var datasetIndex = element._datasetIndex; - - return { - xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '', - yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '', - index: index, - datasetIndex: datasetIndex, - x: element._model.x, - y: element._model.y - }; -} - -/** - * Helper to get the reset model for the tooltip - * @param tooltipOpts {Object} the tooltip options - */ -function getBaseModel(tooltipOpts) { - var globalDefaults = defaults.global; - var valueOrDefault = helpers.valueOrDefault; - - return { - // Positioning - xPadding: tooltipOpts.xPadding, - yPadding: tooltipOpts.yPadding, - xAlign: tooltipOpts.xAlign, - yAlign: tooltipOpts.yAlign, - - // Body - bodyFontColor: tooltipOpts.bodyFontColor, - _bodyFontFamily: valueOrDefault(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily), - _bodyFontStyle: valueOrDefault(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle), - _bodyAlign: tooltipOpts.bodyAlign, - bodyFontSize: valueOrDefault(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize), - bodySpacing: tooltipOpts.bodySpacing, - - // Title - titleFontColor: tooltipOpts.titleFontColor, - _titleFontFamily: valueOrDefault(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily), - _titleFontStyle: valueOrDefault(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle), - titleFontSize: valueOrDefault(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize), - _titleAlign: tooltipOpts.titleAlign, - titleSpacing: tooltipOpts.titleSpacing, - titleMarginBottom: tooltipOpts.titleMarginBottom, - - // Footer - footerFontColor: tooltipOpts.footerFontColor, - _footerFontFamily: valueOrDefault(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily), - _footerFontStyle: valueOrDefault(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle), - footerFontSize: valueOrDefault(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize), - _footerAlign: tooltipOpts.footerAlign, - footerSpacing: tooltipOpts.footerSpacing, - footerMarginTop: tooltipOpts.footerMarginTop, - - // Appearance - caretSize: tooltipOpts.caretSize, - cornerRadius: tooltipOpts.cornerRadius, - backgroundColor: tooltipOpts.backgroundColor, - opacity: 0, - legendColorBackground: tooltipOpts.multiKeyBackground, - displayColors: tooltipOpts.displayColors, - borderColor: tooltipOpts.borderColor, - borderWidth: tooltipOpts.borderWidth - }; -} - -/** - * Get the size of the tooltip - */ -function getTooltipSize(tooltip, model) { - var ctx = tooltip._chart.ctx; - - var height = model.yPadding * 2; // Tooltip Padding - var width = 0; - - // Count of all lines in the body - var body = model.body; - var combinedBodyLength = body.reduce(function(count, bodyItem) { - return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length; - }, 0); - combinedBodyLength += model.beforeBody.length + model.afterBody.length; - - var titleLineCount = model.title.length; - var footerLineCount = model.footer.length; - var titleFontSize = model.titleFontSize; - var bodyFontSize = model.bodyFontSize; - var footerFontSize = model.footerFontSize; - - height += titleLineCount * titleFontSize; // Title Lines - height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing - height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin - height += combinedBodyLength * bodyFontSize; // Body Lines - height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing - height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin - height += footerLineCount * (footerFontSize); // Footer Lines - height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing - - // Title width - var widthPadding = 0; - var maxLineWidth = function(line) { - width = Math.max(width, ctx.measureText(line).width + widthPadding); - }; - - ctx.font = helpers.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily); - helpers.each(model.title, maxLineWidth); - - // Body width - ctx.font = helpers.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily); - helpers.each(model.beforeBody.concat(model.afterBody), maxLineWidth); - - // Body lines may include some extra width due to the color box - widthPadding = model.displayColors ? (bodyFontSize + 2) : 0; - helpers.each(body, function(bodyItem) { - helpers.each(bodyItem.before, maxLineWidth); - helpers.each(bodyItem.lines, maxLineWidth); - helpers.each(bodyItem.after, maxLineWidth); - }); - - // Reset back to 0 - widthPadding = 0; - - // Footer width - ctx.font = helpers.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily); - helpers.each(model.footer, maxLineWidth); - - // Add padding - width += 2 * model.xPadding; - - return { - width: width, - height: height - }; -} - -/** - * Helper to get the alignment of a tooltip given the size - */ -function determineAlignment(tooltip, size) { - var model = tooltip._model; - var chart = tooltip._chart; - var chartArea = tooltip._chart.chartArea; - var xAlign = 'center'; - var yAlign = 'center'; - - if (model.y < size.height) { - yAlign = 'top'; - } else if (model.y > (chart.height - size.height)) { - yAlign = 'bottom'; + if (values.alpha !== 1) { + vals.a = values.alpha; } - var lf, rf; // functions to determine left, right alignment - var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart - var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges - var midX = (chartArea.left + chartArea.right) / 2; - var midY = (chartArea.top + chartArea.bottom) / 2; + // {r: 255, g: 255, b: 255, a: 0.4} + return vals; +}; - if (yAlign === 'center') { - lf = function(x) { - return x <= midX; - }; - rf = function(x) { - return x > midX; - }; - } else { - lf = function(x) { - return x <= (size.width / 2); - }; - rf = function(x) { - return x >= (chart.width - (size.width / 2)); - }; +Color.prototype.setValues = function (space, vals) { + var values = this.values; + var spaces = this.spaces; + var maxes = this.maxes; + var alpha = 1; + var i; + + this.valid = true; + + if (space === 'alpha') { + alpha = vals; + } else if (vals.length) { + // [10, 10, 10] + values[space] = vals.slice(0, space.length); + alpha = vals[space.length]; + } else if (vals[space.charAt(0)] !== undefined) { + // {r: 10, g: 10, b: 10} + for (i = 0; i < space.length; i++) { + values[space][i] = vals[space.charAt(i)]; + } + + alpha = vals.a; + } else if (vals[spaces[space][0]] !== undefined) { + // {red: 10, green: 10, blue: 10} + var chans = spaces[space]; + + for (i = 0; i < space.length; i++) { + values[space][i] = vals[chans[i]]; + } + + alpha = vals.alpha; } - olf = function(x) { - return x + size.width + model.caretSize + model.caretPadding > chart.width; - }; - orf = function(x) { - return x - size.width - model.caretSize - model.caretPadding < 0; - }; - yf = function(y) { - return y <= midY ? 'top' : 'bottom'; - }; + values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha))); - if (lf(model.x)) { - xAlign = 'left'; - - // Is tooltip too wide and goes over the right side of the chart.? - if (olf(model.x)) { - xAlign = 'center'; - yAlign = yf(model.y); - } - } else if (rf(model.x)) { - xAlign = 'right'; - - // Is tooltip too wide and goes outside left edge of canvas? - if (orf(model.x)) { - xAlign = 'center'; - yAlign = yf(model.y); - } - } - - var opts = tooltip._options; - return { - xAlign: opts.xAlign ? opts.xAlign : xAlign, - yAlign: opts.yAlign ? opts.yAlign : yAlign - }; -} - -/** - * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment - */ -function getBackgroundPoint(vm, size, alignment, chart) { - // Background Position - var x = vm.x; - var y = vm.y; - - var caretSize = vm.caretSize; - var caretPadding = vm.caretPadding; - var cornerRadius = vm.cornerRadius; - var xAlign = alignment.xAlign; - var yAlign = alignment.yAlign; - var paddingAndSize = caretSize + caretPadding; - var radiusAndPadding = cornerRadius + caretPadding; - - if (xAlign === 'right') { - x -= size.width; - } else if (xAlign === 'center') { - x -= (size.width / 2); - if (x + size.width > chart.width) { - x = chart.width - size.width; - } - if (x < 0) { - x = 0; - } - } - - if (yAlign === 'top') { - y += paddingAndSize; - } else if (yAlign === 'bottom') { - y -= size.height + paddingAndSize; - } else { - y -= (size.height / 2); - } - - if (yAlign === 'center') { - if (xAlign === 'left') { - x += paddingAndSize; - } else if (xAlign === 'right') { - x -= paddingAndSize; - } - } else if (xAlign === 'left') { - x -= radiusAndPadding; - } else if (xAlign === 'right') { - x += radiusAndPadding; - } - - return { - x: x, - y: y - }; -} - -/** - * Helper to build before and after body lines - */ -function getBeforeAfterBodyLines(callback) { - return pushOrConcat([], splitNewlines(callback)); -} - -var exports = module.exports = Element.extend({ - initialize: function() { - this._model = getBaseModel(this._options); - this._lastActive = []; - }, - - // Get the title - // Args are: (tooltipItem, data) - getTitle: function() { - var me = this; - var opts = me._options; - var callbacks = opts.callbacks; - - var beforeTitle = callbacks.beforeTitle.apply(me, arguments); - var title = callbacks.title.apply(me, arguments); - var afterTitle = callbacks.afterTitle.apply(me, arguments); - - var lines = []; - lines = pushOrConcat(lines, splitNewlines(beforeTitle)); - lines = pushOrConcat(lines, splitNewlines(title)); - lines = pushOrConcat(lines, splitNewlines(afterTitle)); - - return lines; - }, - - // Args are: (tooltipItem, data) - getBeforeBody: function() { - return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments)); - }, - - // Args are: (tooltipItem, data) - getBody: function(tooltipItems, data) { - var me = this; - var callbacks = me._options.callbacks; - var bodyItems = []; - - helpers.each(tooltipItems, function(tooltipItem) { - var bodyItem = { - before: [], - lines: [], - after: [] - }; - pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data))); - pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data)); - pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data))); - - bodyItems.push(bodyItem); - }); - - return bodyItems; - }, - - // Args are: (tooltipItem, data) - getAfterBody: function() { - return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments)); - }, - - // Get the footer and beforeFooter and afterFooter lines - // Args are: (tooltipItem, data) - getFooter: function() { - var me = this; - var callbacks = me._options.callbacks; - - var beforeFooter = callbacks.beforeFooter.apply(me, arguments); - var footer = callbacks.footer.apply(me, arguments); - var afterFooter = callbacks.afterFooter.apply(me, arguments); - - var lines = []; - lines = pushOrConcat(lines, splitNewlines(beforeFooter)); - lines = pushOrConcat(lines, splitNewlines(footer)); - lines = pushOrConcat(lines, splitNewlines(afterFooter)); - - return lines; - }, - - update: function(changed) { - var me = this; - var opts = me._options; - - // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition - // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time - // which breaks any animations. - var existingModel = me._model; - var model = me._model = getBaseModel(opts); - var active = me._active; - - var data = me._data; - - // In the case where active.length === 0 we need to keep these at existing values for good animations - var alignment = { - xAlign: existingModel.xAlign, - yAlign: existingModel.yAlign - }; - var backgroundPoint = { - x: existingModel.x, - y: existingModel.y - }; - var tooltipSize = { - width: existingModel.width, - height: existingModel.height - }; - var tooltipPosition = { - x: existingModel.caretX, - y: existingModel.caretY - }; - - var i, len; - - if (active.length) { - model.opacity = 1; - - var labelColors = []; - var labelTextColors = []; - tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition); - - var tooltipItems = []; - for (i = 0, len = active.length; i < len; ++i) { - tooltipItems.push(createTooltipItem(active[i])); - } - - // If the user provided a filter function, use it to modify the tooltip items - if (opts.filter) { - tooltipItems = tooltipItems.filter(function(a) { - return opts.filter(a, data); - }); - } - - // If the user provided a sorting function, use it to modify the tooltip items - if (opts.itemSort) { - tooltipItems = tooltipItems.sort(function(a, b) { - return opts.itemSort(a, b, data); - }); - } - - // Determine colors for boxes - helpers.each(tooltipItems, function(tooltipItem) { - labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart)); - labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart)); - }); - - - // Build the Text Lines - model.title = me.getTitle(tooltipItems, data); - model.beforeBody = me.getBeforeBody(tooltipItems, data); - model.body = me.getBody(tooltipItems, data); - model.afterBody = me.getAfterBody(tooltipItems, data); - model.footer = me.getFooter(tooltipItems, data); - - // Initial positioning and colors - model.x = Math.round(tooltipPosition.x); - model.y = Math.round(tooltipPosition.y); - model.caretPadding = opts.caretPadding; - model.labelColors = labelColors; - model.labelTextColors = labelTextColors; - - // data points - model.dataPoints = tooltipItems; - - // We need to determine alignment of the tooltip - tooltipSize = getTooltipSize(this, model); - alignment = determineAlignment(this, tooltipSize); - // Final Size and Position - backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart); - } else { - model.opacity = 0; - } - - model.xAlign = alignment.xAlign; - model.yAlign = alignment.yAlign; - model.x = backgroundPoint.x; - model.y = backgroundPoint.y; - model.width = tooltipSize.width; - model.height = tooltipSize.height; - - // Point where the caret on the tooltip points to - model.caretX = tooltipPosition.x; - model.caretY = tooltipPosition.y; - - me._model = model; - - if (changed && opts.custom) { - opts.custom.call(me, model); - } - - return me; - }, - - drawCaret: function(tooltipPoint, size) { - var ctx = this._chart.ctx; - var vm = this._view; - var caretPosition = this.getCaretPosition(tooltipPoint, size, vm); - - ctx.lineTo(caretPosition.x1, caretPosition.y1); - ctx.lineTo(caretPosition.x2, caretPosition.y2); - ctx.lineTo(caretPosition.x3, caretPosition.y3); - }, - getCaretPosition: function(tooltipPoint, size, vm) { - var x1, x2, x3, y1, y2, y3; - var caretSize = vm.caretSize; - var cornerRadius = vm.cornerRadius; - var xAlign = vm.xAlign; - var yAlign = vm.yAlign; - var ptX = tooltipPoint.x; - var ptY = tooltipPoint.y; - var width = size.width; - var height = size.height; - - if (yAlign === 'center') { - y2 = ptY + (height / 2); - - if (xAlign === 'left') { - x1 = ptX; - x2 = x1 - caretSize; - x3 = x1; - - y1 = y2 + caretSize; - y3 = y2 - caretSize; - } else { - x1 = ptX + width; - x2 = x1 + caretSize; - x3 = x1; - - y1 = y2 - caretSize; - y3 = y2 + caretSize; - } - } else { - if (xAlign === 'left') { - x2 = ptX + cornerRadius + (caretSize); - x1 = x2 - caretSize; - x3 = x2 + caretSize; - } else if (xAlign === 'right') { - x2 = ptX + width - cornerRadius - caretSize; - x1 = x2 - caretSize; - x3 = x2 + caretSize; - } else { - x2 = vm.caretX; - x1 = x2 - caretSize; - x3 = x2 + caretSize; - } - if (yAlign === 'top') { - y1 = ptY; - y2 = y1 - caretSize; - y3 = y1; - } else { - y1 = ptY + height; - y2 = y1 + caretSize; - y3 = y1; - // invert drawing order - var tmp = x3; - x3 = x1; - x1 = tmp; - } - } - return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3}; - }, - - drawTitle: function(pt, vm, ctx, opacity) { - var title = vm.title; - - if (title.length) { - ctx.textAlign = vm._titleAlign; - ctx.textBaseline = 'top'; - - var titleFontSize = vm.titleFontSize; - var titleSpacing = vm.titleSpacing; - - ctx.fillStyle = mergeOpacity(vm.titleFontColor, opacity); - ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily); - - var i, len; - for (i = 0, len = title.length; i < len; ++i) { - ctx.fillText(title[i], pt.x, pt.y); - pt.y += titleFontSize + titleSpacing; // Line Height and spacing - - if (i + 1 === title.length) { - pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing - } - } - } - }, - - drawBody: function(pt, vm, ctx, opacity) { - var bodyFontSize = vm.bodyFontSize; - var bodySpacing = vm.bodySpacing; - var body = vm.body; - - ctx.textAlign = vm._bodyAlign; - ctx.textBaseline = 'top'; - ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily); - - // Before Body - var xLinePadding = 0; - var fillLineOfText = function(line) { - ctx.fillText(line, pt.x + xLinePadding, pt.y); - pt.y += bodyFontSize + bodySpacing; - }; - - // Before body lines - ctx.fillStyle = mergeOpacity(vm.bodyFontColor, opacity); - helpers.each(vm.beforeBody, fillLineOfText); - - var drawColorBoxes = vm.displayColors; - xLinePadding = drawColorBoxes ? (bodyFontSize + 2) : 0; - - // Draw body lines now - helpers.each(body, function(bodyItem, i) { - var textColor = mergeOpacity(vm.labelTextColors[i], opacity); - ctx.fillStyle = textColor; - helpers.each(bodyItem.before, fillLineOfText); - - helpers.each(bodyItem.lines, function(line) { - // Draw Legend-like boxes if needed - if (drawColorBoxes) { - // Fill a white rect so that colours merge nicely if the opacity is < 1 - ctx.fillStyle = mergeOpacity(vm.legendColorBackground, opacity); - ctx.fillRect(pt.x, pt.y, bodyFontSize, bodyFontSize); - - // Border - ctx.lineWidth = 1; - ctx.strokeStyle = mergeOpacity(vm.labelColors[i].borderColor, opacity); - ctx.strokeRect(pt.x, pt.y, bodyFontSize, bodyFontSize); - - // Inner square - ctx.fillStyle = mergeOpacity(vm.labelColors[i].backgroundColor, opacity); - ctx.fillRect(pt.x + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2); - ctx.fillStyle = textColor; - } - - fillLineOfText(line); - }); - - helpers.each(bodyItem.after, fillLineOfText); - }); - - // Reset back to 0 for after body - xLinePadding = 0; - - // After body lines - helpers.each(vm.afterBody, fillLineOfText); - pt.y -= bodySpacing; // Remove last body spacing - }, - - drawFooter: function(pt, vm, ctx, opacity) { - var footer = vm.footer; - - if (footer.length) { - pt.y += vm.footerMarginTop; - - ctx.textAlign = vm._footerAlign; - ctx.textBaseline = 'top'; - - ctx.fillStyle = mergeOpacity(vm.footerFontColor, opacity); - ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily); - - helpers.each(footer, function(line) { - ctx.fillText(line, pt.x, pt.y); - pt.y += vm.footerFontSize + vm.footerSpacing; - }); - } - }, - - drawBackground: function(pt, vm, ctx, tooltipSize, opacity) { - ctx.fillStyle = mergeOpacity(vm.backgroundColor, opacity); - ctx.strokeStyle = mergeOpacity(vm.borderColor, opacity); - ctx.lineWidth = vm.borderWidth; - var xAlign = vm.xAlign; - var yAlign = vm.yAlign; - var x = pt.x; - var y = pt.y; - var width = tooltipSize.width; - var height = tooltipSize.height; - var radius = vm.cornerRadius; - - ctx.beginPath(); - ctx.moveTo(x + radius, y); - if (yAlign === 'top') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x + width - radius, y); - ctx.quadraticCurveTo(x + width, y, x + width, y + radius); - if (yAlign === 'center' && xAlign === 'right') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x + width, y + height - radius); - ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); - if (yAlign === 'bottom') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x + radius, y + height); - ctx.quadraticCurveTo(x, y + height, x, y + height - radius); - if (yAlign === 'center' && xAlign === 'left') { - this.drawCaret(pt, tooltipSize); - } - ctx.lineTo(x, y + radius); - ctx.quadraticCurveTo(x, y, x + radius, y); - ctx.closePath(); - - ctx.fill(); - - if (vm.borderWidth > 0) { - ctx.stroke(); - } - }, - - draw: function() { - var ctx = this._chart.ctx; - var vm = this._view; - - if (vm.opacity === 0) { - return; - } - - var tooltipSize = { - width: vm.width, - height: vm.height - }; - var pt = { - x: vm.x, - y: vm.y - }; - - // IE11/Edge does not like very small opacities, so snap to 0 - var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity; - - // Truthy/falsey value for empty tooltip - var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length; - - if (this._options.enabled && hasTooltipContent) { - // Draw Background - this.drawBackground(pt, vm, ctx, tooltipSize, opacity); - - // Draw Title, Body, and Footer - pt.x += vm.xPadding; - pt.y += vm.yPadding; - - // Titles - this.drawTitle(pt, vm, ctx, opacity); - - // Body - this.drawBody(pt, vm, ctx, opacity); - - // Footer - this.drawFooter(pt, vm, ctx, opacity); - } - }, - - /** - * Handle an event - * @private - * @param {IEvent} event - The event to handle - * @returns {Boolean} true if the tooltip changed - */ - handleEvent: function(e) { - var me = this; - var options = me._options; - var changed = false; - - me._lastActive = me._lastActive || []; - - // Find Active Elements for tooltips - if (e.type === 'mouseout') { - me._active = []; - } else { - me._active = me._chart.getElementsAtEventForMode(e, options.mode, options); - } - - // Remember Last Actives - changed = !helpers.arrayEquals(me._active, me._lastActive); - - // Only handle target event on tooltip change - if (changed) { - me._lastActive = me._active; - - if (options.enabled || options.custom) { - me._eventPosition = { - x: e.x, - y: e.y - }; - - me.update(true); - me.pivot(); - } - } - - return changed; - } -}); - -/** - * @namespace Chart.Tooltip.positioners - */ -exports.positioners = positioners; - - -},{"26":26,"27":27,"46":46}],37:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var Element = require(27); -var helpers = require(46); - -defaults._set('global', { - elements: { - arc: { - backgroundColor: defaults.global.defaultColor, - borderColor: '#fff', - borderWidth: 2 - } - } -}); - -module.exports = Element.extend({ - inLabelRange: function(mouseX) { - var vm = this._view; - - if (vm) { - return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2)); - } + if (space === 'alpha') { return false; - }, - - inRange: function(chartX, chartY) { - var vm = this._view; - - if (vm) { - var pointRelativePosition = helpers.getAngleFromPoint(vm, {x: chartX, y: chartY}); - var angle = pointRelativePosition.angle; - var distance = pointRelativePosition.distance; - - // Sanitise angle range - var startAngle = vm.startAngle; - var endAngle = vm.endAngle; - while (endAngle < startAngle) { - endAngle += 2.0 * Math.PI; - } - while (angle > endAngle) { - angle -= 2.0 * Math.PI; - } - while (angle < startAngle) { - angle += 2.0 * Math.PI; - } - - // Check if within the range of the open/close angle - var betweenAngles = (angle >= startAngle && angle <= endAngle); - var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius); - - return (betweenAngles && withinRadius); - } - return false; - }, - - getCenterPoint: function() { - var vm = this._view; - var halfAngle = (vm.startAngle + vm.endAngle) / 2; - var halfRadius = (vm.innerRadius + vm.outerRadius) / 2; - return { - x: vm.x + Math.cos(halfAngle) * halfRadius, - y: vm.y + Math.sin(halfAngle) * halfRadius - }; - }, - - getArea: function() { - var vm = this._view; - return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2)); - }, - - tooltipPosition: function() { - var vm = this._view; - var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2); - var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius; - - return { - x: vm.x + (Math.cos(centreAngle) * rangeFromCentre), - y: vm.y + (Math.sin(centreAngle) * rangeFromCentre) - }; - }, - - draw: function() { - var ctx = this._chart.ctx; - var vm = this._view; - var sA = vm.startAngle; - var eA = vm.endAngle; - - ctx.beginPath(); - - ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA); - ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true); - - ctx.closePath(); - ctx.strokeStyle = vm.borderColor; - ctx.lineWidth = vm.borderWidth; - - ctx.fillStyle = vm.backgroundColor; - - ctx.fill(); - ctx.lineJoin = 'bevel'; - - if (vm.borderWidth) { - ctx.stroke(); - } - } -}); - -},{"26":26,"27":27,"46":46}],38:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var Element = require(27); -var helpers = require(46); - -var globalDefaults = defaults.global; - -defaults._set('global', { - elements: { - line: { - tension: 0.4, - backgroundColor: globalDefaults.defaultColor, - borderWidth: 3, - borderColor: globalDefaults.defaultColor, - borderCapStyle: 'butt', - borderDash: [], - borderDashOffset: 0.0, - borderJoinStyle: 'miter', - capBezierPoints: true, - fill: true, // do we fill in the area between the line and its base axis - } - } -}); - -module.exports = Element.extend({ - draw: function() { - var me = this; - var vm = me._view; - var ctx = me._chart.ctx; - var spanGaps = vm.spanGaps; - var points = me._children.slice(); // clone array - var globalOptionLineElements = globalDefaults.elements.line; - var lastDrawnIndex = -1; - var index, current, previous, currentVM; - - // If we are looping, adding the first point again - if (me._loop && points.length) { - points.push(points[0]); - } - - ctx.save(); - - // Stroke Line Options - ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle; - - // IE 9 and 10 do not support line dash - if (ctx.setLineDash) { - ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash); - } - - ctx.lineDashOffset = vm.borderDashOffset || globalOptionLineElements.borderDashOffset; - ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle; - ctx.lineWidth = vm.borderWidth || globalOptionLineElements.borderWidth; - ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor; - - // Stroke Line - ctx.beginPath(); - lastDrawnIndex = -1; - - for (index = 0; index < points.length; ++index) { - current = points[index]; - previous = helpers.previousItem(points, index); - currentVM = current._view; - - // First point moves to it's starting position no matter what - if (index === 0) { - if (!currentVM.skip) { - ctx.moveTo(currentVM.x, currentVM.y); - lastDrawnIndex = index; - } - } else { - previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex]; - - if (!currentVM.skip) { - if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) { - // There was a gap and this is the first point after the gap - ctx.moveTo(currentVM.x, currentVM.y); - } else { - // Line to next point - helpers.canvas.lineTo(ctx, previous._view, current._view); - } - lastDrawnIndex = index; - } - } - } - - ctx.stroke(); - ctx.restore(); - } -}); - -},{"26":26,"27":27,"46":46}],39:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var Element = require(27); -var helpers = require(46); - -var defaultColor = defaults.global.defaultColor; - -defaults._set('global', { - elements: { - point: { - radius: 3, - pointStyle: 'circle', - backgroundColor: defaultColor, - borderColor: defaultColor, - borderWidth: 1, - // Hover - hitRadius: 1, - hoverRadius: 4, - hoverBorderWidth: 1 - } - } -}); - -function xRange(mouseX) { - var vm = this._view; - return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false; -} - -function yRange(mouseY) { - var vm = this._view; - return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false; -} - -module.exports = Element.extend({ - inRange: function(mouseX, mouseY) { - var vm = this._view; - return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false; - }, - - inLabelRange: xRange, - inXRange: xRange, - inYRange: yRange, - - getCenterPoint: function() { - var vm = this._view; - return { - x: vm.x, - y: vm.y - }; - }, - - getArea: function() { - return Math.PI * Math.pow(this._view.radius, 2); - }, - - tooltipPosition: function() { - var vm = this._view; - return { - x: vm.x, - y: vm.y, - padding: vm.radius + vm.borderWidth - }; - }, - - draw: function(chartArea) { - var vm = this._view; - var model = this._model; - var ctx = this._chart.ctx; - var pointStyle = vm.pointStyle; - var rotation = vm.rotation; - var radius = vm.radius; - var x = vm.x; - var y = vm.y; - var errMargin = 1.01; // 1.01 is margin for Accumulated error. (Especially Edge, IE.) - - if (vm.skip) { - return; - } - - // Clipping for Points. - if (chartArea === undefined || (model.x >= chartArea.left && chartArea.right * errMargin >= model.x && model.y >= chartArea.top && chartArea.bottom * errMargin >= model.y)) { - ctx.strokeStyle = vm.borderColor || defaultColor; - ctx.lineWidth = helpers.valueOrDefault(vm.borderWidth, defaults.global.elements.point.borderWidth); - ctx.fillStyle = vm.backgroundColor || defaultColor; - helpers.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation); - } - } -}); - -},{"26":26,"27":27,"46":46}],40:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var Element = require(27); - -defaults._set('global', { - elements: { - rectangle: { - backgroundColor: defaults.global.defaultColor, - borderColor: defaults.global.defaultColor, - borderSkipped: 'bottom', - borderWidth: 0 - } - } -}); - -function isVertical(bar) { - return bar._view.width !== undefined; -} - -/** - * Helper function to get the bounds of the bar regardless of the orientation - * @param bar {Chart.Element.Rectangle} the bar - * @return {Bounds} bounds of the bar - * @private - */ -function getBarBounds(bar) { - var vm = bar._view; - var x1, x2, y1, y2; - - if (isVertical(bar)) { - // vertical - var halfWidth = vm.width / 2; - x1 = vm.x - halfWidth; - x2 = vm.x + halfWidth; - y1 = Math.min(vm.y, vm.base); - y2 = Math.max(vm.y, vm.base); - } else { - // horizontal bar - var halfHeight = vm.height / 2; - x1 = Math.min(vm.x, vm.base); - x2 = Math.max(vm.x, vm.base); - y1 = vm.y - halfHeight; - y2 = vm.y + halfHeight; } - return { - left: x1, - top: y1, - right: x2, - bottom: y2 - }; -} + var capped; -module.exports = Element.extend({ - draw: function() { - var ctx = this._chart.ctx; - var vm = this._view; - var left, right, top, bottom, signX, signY, borderSkipped; - var borderWidth = vm.borderWidth; - - if (!vm.horizontal) { - // bar - left = vm.x - vm.width / 2; - right = vm.x + vm.width / 2; - top = vm.y; - bottom = vm.base; - signX = 1; - signY = bottom > top ? 1 : -1; - borderSkipped = vm.borderSkipped || 'bottom'; - } else { - // horizontal bar - left = vm.base; - right = vm.x; - top = vm.y - vm.height / 2; - bottom = vm.y + vm.height / 2; - signX = right > left ? 1 : -1; - signY = 1; - borderSkipped = vm.borderSkipped || 'left'; - } - - // Canvas doesn't allow us to stroke inside the width so we can - // adjust the sizes to fit if we're setting a stroke on the line - if (borderWidth) { - // borderWidth shold be less than bar width and bar height. - var barSize = Math.min(Math.abs(left - right), Math.abs(top - bottom)); - borderWidth = borderWidth > barSize ? barSize : borderWidth; - var halfStroke = borderWidth / 2; - // Adjust borderWidth when bar top position is near vm.base(zero). - var borderLeft = left + (borderSkipped !== 'left' ? halfStroke * signX : 0); - var borderRight = right + (borderSkipped !== 'right' ? -halfStroke * signX : 0); - var borderTop = top + (borderSkipped !== 'top' ? halfStroke * signY : 0); - var borderBottom = bottom + (borderSkipped !== 'bottom' ? -halfStroke * signY : 0); - // not become a vertical line? - if (borderLeft !== borderRight) { - top = borderTop; - bottom = borderBottom; - } - // not become a horizontal line? - if (borderTop !== borderBottom) { - left = borderLeft; - right = borderRight; - } - } - - ctx.beginPath(); - ctx.fillStyle = vm.backgroundColor; - ctx.strokeStyle = vm.borderColor; - ctx.lineWidth = borderWidth; - - // Corner points, from bottom-left to bottom-right clockwise - // | 1 2 | - // | 0 3 | - var corners = [ - [left, bottom], - [left, top], - [right, top], - [right, bottom] - ]; - - // Find first (starting) corner with fallback to 'bottom' - var borders = ['bottom', 'left', 'top', 'right']; - var startCorner = borders.indexOf(borderSkipped, 0); - if (startCorner === -1) { - startCorner = 0; - } - - function cornerAt(index) { - return corners[(startCorner + index) % 4]; - } - - // Draw rectangle from 'startCorner' - var corner = cornerAt(0); - ctx.moveTo(corner[0], corner[1]); - - for (var i = 1; i < 4; i++) { - corner = cornerAt(i); - ctx.lineTo(corner[0], corner[1]); - } - - ctx.fill(); - if (borderWidth) { - ctx.stroke(); - } - }, - - height: function() { - var vm = this._view; - return vm.base - vm.y; - }, - - inRange: function(mouseX, mouseY) { - var inRange = false; - - if (this._view) { - var bounds = getBarBounds(this); - inRange = mouseX >= bounds.left && mouseX <= bounds.right && mouseY >= bounds.top && mouseY <= bounds.bottom; - } - - return inRange; - }, - - inLabelRange: function(mouseX, mouseY) { - var me = this; - if (!me._view) { - return false; - } - - var inRange = false; - var bounds = getBarBounds(me); - - if (isVertical(me)) { - inRange = mouseX >= bounds.left && mouseX <= bounds.right; - } else { - inRange = mouseY >= bounds.top && mouseY <= bounds.bottom; - } - - return inRange; - }, - - inXRange: function(mouseX) { - var bounds = getBarBounds(this); - return mouseX >= bounds.left && mouseX <= bounds.right; - }, - - inYRange: function(mouseY) { - var bounds = getBarBounds(this); - return mouseY >= bounds.top && mouseY <= bounds.bottom; - }, - - getCenterPoint: function() { - var vm = this._view; - var x, y; - if (isVertical(this)) { - x = vm.x; - y = (vm.y + vm.base) / 2; - } else { - x = (vm.x + vm.base) / 2; - y = vm.y; - } - - return {x: x, y: y}; - }, - - getArea: function() { - var vm = this._view; - return vm.width * Math.abs(vm.y - vm.base); - }, - - tooltipPosition: function() { - var vm = this._view; - return { - x: vm.x, - y: vm.y - }; + // cap values of the space prior converting all values + for (i = 0; i < space.length; i++) { + capped = Math.max(0, Math.min(maxes[space][i], values[space][i])); + values[space][i] = Math.round(capped); } -}); -},{"26":26,"27":27}],41:[function(require,module,exports){ -'use strict'; - -module.exports = {}; -module.exports.Arc = require(37); -module.exports.Line = require(38); -module.exports.Point = require(39); -module.exports.Rectangle = require(40); - -},{"37":37,"38":38,"39":39,"40":40}],42:[function(require,module,exports){ -'use strict'; - -var helpers = require(43); - -/** - * @namespace Chart.helpers.canvas - */ -var exports = module.exports = { - /** - * Clears the entire canvas associated to the given `chart`. - * @param {Chart} chart - The chart for which to clear the canvas. - */ - clear: function(chart) { - chart.ctx.clearRect(0, 0, chart.width, chart.height); - }, - - /** - * Creates a "path" for a rectangle with rounded corners at position (x, y) with a - * given size (width, height) and the same `radius` for all corners. - * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context. - * @param {Number} x - The x axis of the coordinate for the rectangle starting point. - * @param {Number} y - The y axis of the coordinate for the rectangle starting point. - * @param {Number} width - The rectangle's width. - * @param {Number} height - The rectangle's height. - * @param {Number} radius - The rounded amount (in pixels) for the four corners. - * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object? - */ - roundedRect: function(ctx, x, y, width, height, radius) { - if (radius) { - // NOTE(SB) `epsilon` helps to prevent minor artifacts appearing - // on Chrome when `r` is exactly half the height or the width. - var epsilon = 0.0000001; - var r = Math.min(radius, (height / 2) - epsilon, (width / 2) - epsilon); - - ctx.moveTo(x + r, y); - ctx.lineTo(x + width - r, y); - ctx.arcTo(x + width, y, x + width, y + r, r); - ctx.lineTo(x + width, y + height - r); - ctx.arcTo(x + width, y + height, x + width - r, y + height, r); - ctx.lineTo(x + r, y + height); - ctx.arcTo(x, y + height, x, y + height - r, r); - ctx.lineTo(x, y + r); - ctx.arcTo(x, y, x + r, y, r); - ctx.closePath(); - ctx.moveTo(x, y); - } else { - ctx.rect(x, y, width, height); + // convert to all the other color spaces + for (var sname in spaces) { + if (sname !== space) { + values[sname] = colorConvert[space][sname](values[space]); } - }, - - drawPoint: function(ctx, style, radius, x, y, rotation) { - var type, edgeLength, xOffset, yOffset, height, size; - rotation = rotation || 0; - - if (style && typeof style === 'object') { - type = style.toString(); - if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') { - ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height); - return; - } - } - - if (isNaN(radius) || radius <= 0) { - return; - } - - ctx.save(); - ctx.translate(x, y); - ctx.rotate(rotation * Math.PI / 180); - ctx.beginPath(); - - switch (style) { - // Default includes circle - default: - ctx.arc(0, 0, radius, 0, Math.PI * 2); - ctx.closePath(); - break; - case 'triangle': - edgeLength = 3 * radius / Math.sqrt(3); - height = edgeLength * Math.sqrt(3) / 2; - ctx.moveTo(-edgeLength / 2, height / 3); - ctx.lineTo(edgeLength / 2, height / 3); - ctx.lineTo(0, -2 * height / 3); - ctx.closePath(); - break; - case 'rect': - size = 1 / Math.SQRT2 * radius; - ctx.rect(-size, -size, 2 * size, 2 * size); - break; - case 'rectRounded': - var offset = radius / Math.SQRT2; - var leftX = -offset; - var topY = -offset; - var sideSize = Math.SQRT2 * radius; - - // NOTE(SB) the rounded rect implementation changed to use `arcTo` - // instead of `quadraticCurveTo` since it generates better results - // when rect is almost a circle. 0.425 (instead of 0.5) produces - // results visually closer to the previous impl. - this.roundedRect(ctx, leftX, topY, sideSize, sideSize, radius * 0.425); - break; - case 'rectRot': - size = 1 / Math.SQRT2 * radius; - ctx.moveTo(-size, 0); - ctx.lineTo(0, size); - ctx.lineTo(size, 0); - ctx.lineTo(0, -size); - ctx.closePath(); - break; - case 'cross': - ctx.moveTo(0, radius); - ctx.lineTo(0, -radius); - ctx.moveTo(-radius, 0); - ctx.lineTo(radius, 0); - break; - case 'crossRot': - xOffset = Math.cos(Math.PI / 4) * radius; - yOffset = Math.sin(Math.PI / 4) * radius; - ctx.moveTo(-xOffset, -yOffset); - ctx.lineTo(xOffset, yOffset); - ctx.moveTo(-xOffset, yOffset); - ctx.lineTo(xOffset, -yOffset); - break; - case 'star': - ctx.moveTo(0, radius); - ctx.lineTo(0, -radius); - ctx.moveTo(-radius, 0); - ctx.lineTo(radius, 0); - xOffset = Math.cos(Math.PI / 4) * radius; - yOffset = Math.sin(Math.PI / 4) * radius; - ctx.moveTo(-xOffset, -yOffset); - ctx.lineTo(xOffset, yOffset); - ctx.moveTo(-xOffset, yOffset); - ctx.lineTo(xOffset, -yOffset); - break; - case 'line': - ctx.moveTo(-radius, 0); - ctx.lineTo(radius, 0); - break; - case 'dash': - ctx.moveTo(0, 0); - ctx.lineTo(radius, 0); - break; - } - - ctx.fill(); - ctx.stroke(); - ctx.restore(); - }, - - clipArea: function(ctx, area) { - ctx.save(); - ctx.beginPath(); - ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top); - ctx.clip(); - }, - - unclipArea: function(ctx) { - ctx.restore(); - }, - - lineTo: function(ctx, previous, target, flip) { - if (target.steppedLine) { - if ((target.steppedLine === 'after' && !flip) || (target.steppedLine !== 'after' && flip)) { - ctx.lineTo(previous.x, target.y); - } else { - ctx.lineTo(target.x, previous.y); - } - ctx.lineTo(target.x, target.y); - return; - } - - if (!target.tension) { - ctx.lineTo(target.x, target.y); - return; - } - - ctx.bezierCurveTo( - flip ? previous.controlPointPreviousX : previous.controlPointNextX, - flip ? previous.controlPointPreviousY : previous.controlPointNextY, - flip ? target.controlPointNextX : target.controlPointPreviousX, - flip ? target.controlPointNextY : target.controlPointPreviousY, - target.x, - target.y); } + + return true; }; -// DEPRECATIONS +Color.prototype.setSpace = function (space, args) { + var vals = args[0]; -/** - * Provided for backward compatibility, use Chart.helpers.canvas.clear instead. - * @namespace Chart.helpers.clear - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers.clear = exports.clear; + if (vals === undefined) { + // color.rgb() + return this.getValues(space); + } -/** - * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead. - * @namespace Chart.helpers.drawRoundedRectangle - * @deprecated since version 2.7.0 - * @todo remove at version 3 - * @private - */ -helpers.drawRoundedRectangle = function(ctx) { - ctx.beginPath(); - exports.roundedRect.apply(exports, arguments); + // color.rgb(10, 10, 10) + if (typeof vals === 'number') { + vals = Array.prototype.slice.call(args); + } + + this.setValues(space, vals); + return this; }; -},{"43":43}],43:[function(require,module,exports){ -'use strict'; +Color.prototype.setChannel = function (space, index, val) { + var svalues = this.values[space]; + if (val === undefined) { + // color.red() + return svalues[index]; + } else if (val === svalues[index]) { + // color.red(color.red()) + return this; + } + + // color.red(100) + svalues[index] = val; + this.setValues(space, svalues); + + return this; +}; + +if (typeof window !== 'undefined') { + window.Color = Color; +} + +var chartjsColor = Color; /** * @namespace Chart.helpers @@ -9855,7 +1688,7 @@ var helpers = { /** * Returns a unique id, sequentially generated from a global variable. - * @returns {Number} + * @returns {number} * @function */ uid: (function() { @@ -9868,7 +1701,7 @@ var helpers = { /** * Returns true if `value` is neither null nor undefined, else returns false. * @param {*} value - The value to test. - * @returns {Boolean} + * @returns {boolean} * @since 2.7.0 */ isNullOrUndef: function(value) { @@ -9876,25 +1709,41 @@ var helpers = { }, /** - * Returns true if `value` is an array, else returns false. + * Returns true if `value` is an array (including typed arrays), else returns false. * @param {*} value - The value to test. - * @returns {Boolean} + * @returns {boolean} * @function */ - isArray: Array.isArray ? Array.isArray : function(value) { - return Object.prototype.toString.call(value) === '[object Array]'; + isArray: function(value) { + if (Array.isArray && Array.isArray(value)) { + return true; + } + var type = Object.prototype.toString.call(value); + if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') { + return true; + } + return false; }, /** * Returns true if `value` is an object (excluding null), else returns false. * @param {*} value - The value to test. - * @returns {Boolean} + * @returns {boolean} * @since 2.7.0 */ isObject: function(value) { return value !== null && Object.prototype.toString.call(value) === '[object Object]'; }, + /** + * Returns true if `value` is a finite number, else returns false + * @param {*} value - The value to test. + * @returns {boolean} + */ + isFinite: function(value) { + return (typeof value === 'number' || value instanceof Number) && isFinite(value); + }, + /** * Returns `value` if defined, else returns `defaultValue`. * @param {*} value - The value to return if defined. @@ -9908,7 +1757,7 @@ var helpers = { /** * Returns value at the given `index` in array if defined, else returns `defaultValue`. * @param {Array} value - The array to lookup for value at `index`. - * @param {Number} index - The index in `value` to lookup for value. + * @param {number} index - The index in `value` to lookup for value. * @param {*} defaultValue - The value to return if `value[index]` is undefined. * @returns {*} */ @@ -9919,9 +1768,9 @@ var helpers = { /** * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the * value returned by `fn`. If `fn` is not a function, this method returns undefined. - * @param {Function} fn - The function to call. + * @param {function} fn - The function to call. * @param {Array|undefined|null} args - The arguments with which `fn` should be called. - * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`. + * @param {object} [thisArg] - The value of `this` provided for the call to `fn`. * @returns {*} */ callback: function(fn, args, thisArg) { @@ -9934,10 +1783,10 @@ var helpers = { * Note(SB) for performance sake, this method should only be used when loopable type * is unknown or in none intensive code (not called often and small loopable). Else * it's preferable to use a regular for() loop and save extra function calls. - * @param {Object|Array} loopable - The object or array to be iterated. - * @param {Function} fn - The function to call for each item. - * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`. - * @param {Boolean} [reverse] - If true, iterates backward on the loopable. + * @param {object|Array} loopable - The object or array to be iterated. + * @param {function} fn - The function to call for each item. + * @param {object} [thisArg] - The value of `this` provided for the call to `fn`. + * @param {boolean} [reverse] - If true, iterates backward on the loopable. */ each: function(loopable, fn, thisArg, reverse) { var i, len, keys; @@ -9963,10 +1812,10 @@ var helpers = { /** * Returns true if the `a0` and `a1` arrays have the same content, else returns false. - * @see http://stackoverflow.com/a/14853974 + * @see https://stackoverflow.com/a/14853974 * @param {Array} a0 - The array to compare * @param {Array} a1 - The array to compare - * @returns {Boolean} + * @returns {boolean} */ arrayEquals: function(a0, a1) { var i, ilen, v0, v1; @@ -10020,7 +1869,7 @@ var helpers = { /** * The default merger when Chart.helpers.merge is called without merger option. - * Note(SB): this method is also used by configMerge and scaleMerge as fallback. + * Note(SB): also used by mergeConfig and mergeScaleConfig as fallback. * @private */ _merger: function(key, target, source, options) { @@ -10052,11 +1901,11 @@ var helpers = { /** * Recursively deep copies `source` properties into `target` with the given `options`. * IMPORTANT: `target` is not cloned and will be updated with `source` properties. - * @param {Object} target - The target object in which all sources are merged into. - * @param {Object|Array(Object)} source - Object(s) to merge into `target`. - * @param {Object} [options] - Merging options: - * @param {Function} [options.merger] - The merge method (key, target, source, options) - * @returns {Object} The `target` object. + * @param {object} target - The target object in which all sources are merged into. + * @param {object|object[]} source - Object(s) to merge into `target`. + * @param {object} [options] - Merging options: + * @param {function} [options.merger] - The merge method (key, target, source, options) + * @returns {object} The `target` object. */ merge: function(target, source, options) { var sources = helpers.isArray(source) ? source : [source]; @@ -10088,9 +1937,9 @@ var helpers = { /** * Recursively deep copies `source` properties into `target` *only* if not defined in target. * IMPORTANT: `target` is not cloned and will be updated with `source` properties. - * @param {Object} target - The target object in which all sources are merged into. - * @param {Object|Array(Object)} source - Object(s) to merge into `target`. - * @returns {Object} The `target` object. + * @param {object} target - The target object in which all sources are merged into. + * @param {object|object[]} source - Object(s) to merge into `target`. + * @returns {object} The `target` object. */ mergeIf: function(target, source) { return helpers.merge(target, source, {merger: helpers._mergerIf}); @@ -10098,10 +1947,10 @@ var helpers = { /** * Applies the contents of two or more objects together into the first object. - * @param {Object} target - The target object in which all objects are merged into. - * @param {Object} arg1 - Object containing additional properties to merge in target. - * @param {Object} argN - Additional objects containing properties to merge in target. - * @returns {Object} The `target` object. + * @param {object} target - The target object in which all objects are merged into. + * @param {object} arg1 - Object containing additional properties to merge in target. + * @param {object} argN - Additional objects containing properties to merge in target. + * @returns {object} The `target` object. */ extend: function(target) { var setFn = function(value, key) { @@ -10139,7 +1988,7 @@ var helpers = { } }; -module.exports = helpers; +var helpers_core = helpers; // DEPRECATIONS @@ -10182,11 +2031,6 @@ helpers.getValueOrDefault = helpers.valueOrDefault; */ helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault; -},{}],44:[function(require,module,exports){ -'use strict'; - -var helpers = require(43); - /** * Easing functions adapted from Robert Penner's easing equations. * @namespace Chart.helpers.easingEffects @@ -10419,7 +2263,7 @@ var effects = { } }; -module.exports = { +var helpers_easing = { effects: effects }; @@ -10432,23 +2276,309 @@ module.exports = { * @todo remove at version 3 * @private */ -helpers.easingEffects = effects; +helpers_core.easingEffects = effects; -},{"43":43}],45:[function(require,module,exports){ -'use strict'; +var PI = Math.PI; +var RAD_PER_DEG = PI / 180; +var DOUBLE_PI = PI * 2; +var HALF_PI = PI / 2; +var QUARTER_PI = PI / 4; +var TWO_THIRDS_PI = PI * 2 / 3; -var helpers = require(43); +/** + * @namespace Chart.helpers.canvas + */ +var exports$1 = { + /** + * Clears the entire canvas associated to the given `chart`. + * @param {Chart} chart - The chart for which to clear the canvas. + */ + clear: function(chart) { + chart.ctx.clearRect(0, 0, chart.width, chart.height); + }, + + /** + * Creates a "path" for a rectangle with rounded corners at position (x, y) with a + * given size (width, height) and the same `radius` for all corners. + * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context. + * @param {number} x - The x axis of the coordinate for the rectangle starting point. + * @param {number} y - The y axis of the coordinate for the rectangle starting point. + * @param {number} width - The rectangle's width. + * @param {number} height - The rectangle's height. + * @param {number} radius - The rounded amount (in pixels) for the four corners. + * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object? + */ + roundedRect: function(ctx, x, y, width, height, radius) { + if (radius) { + var r = Math.min(radius, height / 2, width / 2); + var left = x + r; + var top = y + r; + var right = x + width - r; + var bottom = y + height - r; + + ctx.moveTo(x, top); + if (left < right && top < bottom) { + ctx.arc(left, top, r, -PI, -HALF_PI); + ctx.arc(right, top, r, -HALF_PI, 0); + ctx.arc(right, bottom, r, 0, HALF_PI); + ctx.arc(left, bottom, r, HALF_PI, PI); + } else if (left < right) { + ctx.moveTo(left, y); + ctx.arc(right, top, r, -HALF_PI, HALF_PI); + ctx.arc(left, top, r, HALF_PI, PI + HALF_PI); + } else if (top < bottom) { + ctx.arc(left, top, r, -PI, 0); + ctx.arc(left, bottom, r, 0, PI); + } else { + ctx.arc(left, top, r, -PI, PI); + } + ctx.closePath(); + ctx.moveTo(x, y); + } else { + ctx.rect(x, y, width, height); + } + }, + + drawPoint: function(ctx, style, radius, x, y, rotation) { + var type, xOffset, yOffset, size, cornerRadius; + var rad = (rotation || 0) * RAD_PER_DEG; + + if (style && typeof style === 'object') { + type = style.toString(); + if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') { + ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height); + return; + } + } + + if (isNaN(radius) || radius <= 0) { + return; + } + + ctx.beginPath(); + + switch (style) { + // Default includes circle + default: + ctx.arc(x, y, radius, 0, DOUBLE_PI); + ctx.closePath(); + break; + case 'triangle': + ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); + rad += TWO_THIRDS_PI; + ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); + rad += TWO_THIRDS_PI; + ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius); + ctx.closePath(); + break; + case 'rectRounded': + // NOTE: the rounded rect implementation changed to use `arc` instead of + // `quadraticCurveTo` since it generates better results when rect is + // almost a circle. 0.516 (instead of 0.5) produces results with visually + // closer proportion to the previous impl and it is inscribed in the + // circle with `radius`. For more details, see the following PRs: + // https://github.com/chartjs/Chart.js/issues/5597 + // https://github.com/chartjs/Chart.js/issues/5858 + cornerRadius = radius * 0.516; + size = radius - cornerRadius; + xOffset = Math.cos(rad + QUARTER_PI) * size; + yOffset = Math.sin(rad + QUARTER_PI) * size; + ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI); + ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad); + ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI); + ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI); + ctx.closePath(); + break; + case 'rect': + if (!rotation) { + size = Math.SQRT1_2 * radius; + ctx.rect(x - size, y - size, 2 * size, 2 * size); + break; + } + rad += QUARTER_PI; + /* falls through */ + case 'rectRot': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + yOffset, y - xOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.lineTo(x - yOffset, y + xOffset); + ctx.closePath(); + break; + case 'crossRot': + rad += QUARTER_PI; + /* falls through */ + case 'cross': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.moveTo(x + yOffset, y - xOffset); + ctx.lineTo(x - yOffset, y + xOffset); + break; + case 'star': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.moveTo(x + yOffset, y - xOffset); + ctx.lineTo(x - yOffset, y + xOffset); + rad += QUARTER_PI; + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + ctx.moveTo(x + yOffset, y - xOffset); + ctx.lineTo(x - yOffset, y + xOffset); + break; + case 'line': + xOffset = Math.cos(rad) * radius; + yOffset = Math.sin(rad) * radius; + ctx.moveTo(x - xOffset, y - yOffset); + ctx.lineTo(x + xOffset, y + yOffset); + break; + case 'dash': + ctx.moveTo(x, y); + ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius); + break; + } + + ctx.fill(); + ctx.stroke(); + }, + + /** + * Returns true if the point is inside the rectangle + * @param {object} point - The point to test + * @param {object} area - The rectangle + * @returns {boolean} + * @private + */ + _isPointInArea: function(point, area) { + var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error. + + return point.x > area.left - epsilon && point.x < area.right + epsilon && + point.y > area.top - epsilon && point.y < area.bottom + epsilon; + }, + + clipArea: function(ctx, area) { + ctx.save(); + ctx.beginPath(); + ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top); + ctx.clip(); + }, + + unclipArea: function(ctx) { + ctx.restore(); + }, + + lineTo: function(ctx, previous, target, flip) { + var stepped = target.steppedLine; + if (stepped) { + if (stepped === 'middle') { + var midpoint = (previous.x + target.x) / 2.0; + ctx.lineTo(midpoint, flip ? target.y : previous.y); + ctx.lineTo(midpoint, flip ? previous.y : target.y); + } else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) { + ctx.lineTo(previous.x, target.y); + } else { + ctx.lineTo(target.x, previous.y); + } + ctx.lineTo(target.x, target.y); + return; + } + + if (!target.tension) { + ctx.lineTo(target.x, target.y); + return; + } + + ctx.bezierCurveTo( + flip ? previous.controlPointPreviousX : previous.controlPointNextX, + flip ? previous.controlPointPreviousY : previous.controlPointNextY, + flip ? target.controlPointNextX : target.controlPointPreviousX, + flip ? target.controlPointNextY : target.controlPointPreviousY, + target.x, + target.y); + } +}; + +var helpers_canvas = exports$1; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart.helpers.canvas.clear instead. + * @namespace Chart.helpers.clear + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers_core.clear = exports$1.clear; + +/** + * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead. + * @namespace Chart.helpers.drawRoundedRectangle + * @deprecated since version 2.7.0 + * @todo remove at version 3 + * @private + */ +helpers_core.drawRoundedRectangle = function(ctx) { + ctx.beginPath(); + exports$1.roundedRect.apply(exports$1, arguments); +}; + +var defaults = { + /** + * @private + */ + _set: function(scope, values) { + return helpers_core.merge(this[scope] || (this[scope] = {}), values); + } +}; + +defaults._set('global', { + defaultColor: 'rgba(0,0,0,0.1)', + defaultFontColor: '#666', + defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif", + defaultFontSize: 12, + defaultFontStyle: 'normal', + defaultLineHeight: 1.2, + showLines: true +}); + +var core_defaults = defaults; + +var valueOrDefault = helpers_core.valueOrDefault; + +/** + * Converts the given font object into a CSS font string. + * @param {object} font - A font object. + * @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font + * @private + */ +function toFontString(font) { + if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) { + return null; + } + + return (font.style ? font.style + ' ' : '') + + (font.weight ? font.weight + ' ' : '') + + font.size + 'px ' + + font.family; +} /** * @alias Chart.helpers.options * @namespace */ -module.exports = { +var helpers_options = { /** * Converts the given line height `value` in pixels for a specific font `size`. - * @param {Number|String} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em'). - * @param {Number} size - The font size (in pixels) used to resolve relative `value`. - * @returns {Number} The effective line height in pixels (size * 1.2 if value is invalid). + * @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em'). + * @param {number} size - The font size (in pixels) used to resolve relative `value`. + * @returns {number} The effective line height in pixels (size * 1.2 if value is invalid). * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height * @since 2.7.0 */ @@ -10475,15 +2605,15 @@ module.exports = { /** * Converts the given value into a padding object with pre-computed width/height. - * @param {Number|Object} value - If a number, set the value to all TRBL component, + * @param {number|object} value - If a number, set the value to all TRBL component, * else, if and object, use defined properties and sets undefined ones to 0. - * @returns {Object} The padding values (top, right, bottom, left, width, height) + * @returns {object} The padding values (top, right, bottom, left, width, height) * @since 2.7.0 */ toPadding: function(value) { var t, r, b, l; - if (helpers.isObject(value)) { + if (helpers_core.isObject(value)) { t = +value.top || 0; r = +value.right || 0; b = +value.bottom || 0; @@ -10502,12 +2632,35 @@ module.exports = { }; }, + /** + * Parses font options and returns the font object. + * @param {object} options - A object that contains font options to be parsed. + * @return {object} The font object. + * @todo Support font.* options and renamed to toFont(). + * @private + */ + _parseFont: function(options) { + var globalDefaults = core_defaults.global; + var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize); + var font = { + family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily), + lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size), + size: size, + style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle), + weight: null, + string: '' + }; + + font.string = toFontString(font); + return font; + }, + /** * Evaluates the given `inputs` sequentially and returns the first defined value. - * @param {Array[]} inputs - An array of values, falling back to the last value. - * @param {Object} [context] - If defined and the current value is a function, the value + * @param {Array} inputs - An array of values, falling back to the last value. + * @param {object} [context] - If defined and the current value is a function, the value * is called with `context` as first argument and the result becomes the new input. - * @param {Number} [index] - If defined and the current value is an array, the value + * @param {number} [index] - If defined and the current value is an array, the value * at `index` become the new input. * @since 2.7.0 */ @@ -10522,7 +2675,7 @@ module.exports = { if (context !== undefined && typeof value === 'function') { value = value(context); } - if (index !== undefined && helpers.isArray(value)) { + if (index !== undefined && helpers_core.isArray(value)) { value = value[index]; } if (value !== undefined) { @@ -10532,21 +2685,3856 @@ module.exports = { } }; -},{"43":43}],46:[function(require,module,exports){ -'use strict'; +var helpers$1 = helpers_core; +var easing = helpers_easing; +var canvas = helpers_canvas; +var options = helpers_options; +helpers$1.easing = easing; +helpers$1.canvas = canvas; +helpers$1.options = options; -module.exports = require(43); -module.exports.easing = require(44); -module.exports.canvas = require(42); -module.exports.options = require(45); +function interpolate(start, view, model, ease) { + var keys = Object.keys(model); + var i, ilen, key, actual, origin, target, type, c0, c1; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + + target = model[key]; + + // if a value is added to the model after pivot() has been called, the view + // doesn't contain it, so let's initialize the view to the target value. + if (!view.hasOwnProperty(key)) { + view[key] = target; + } + + actual = view[key]; + + if (actual === target || key[0] === '_') { + continue; + } + + if (!start.hasOwnProperty(key)) { + start[key] = actual; + } + + origin = start[key]; + + type = typeof target; + + if (type === typeof origin) { + if (type === 'string') { + c0 = chartjsColor(origin); + if (c0.valid) { + c1 = chartjsColor(target); + if (c1.valid) { + view[key] = c1.mix(c0, ease).rgbString(); + continue; + } + } + } else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) { + view[key] = origin + (target - origin) * ease; + continue; + } + } + + view[key] = target; + } +} + +var Element = function(configuration) { + helpers$1.extend(this, configuration); + this.initialize.apply(this, arguments); +}; + +helpers$1.extend(Element.prototype, { + + initialize: function() { + this.hidden = false; + }, + + pivot: function() { + var me = this; + if (!me._view) { + me._view = helpers$1.clone(me._model); + } + me._start = {}; + return me; + }, + + transition: function(ease) { + var me = this; + var model = me._model; + var start = me._start; + var view = me._view; + + // No animation -> No Transition + if (!model || ease === 1) { + me._view = model; + me._start = null; + return me; + } + + if (!view) { + view = me._view = {}; + } + + if (!start) { + start = me._start = {}; + } + + interpolate(start, view, model, ease); + + return me; + }, + + tooltipPosition: function() { + return { + x: this._model.x, + y: this._model.y + }; + }, + + hasValue: function() { + return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y); + } +}); + +Element.extend = helpers$1.inherits; + +var core_element = Element; + +var exports$2 = core_element.extend({ + chart: null, // the animation associated chart instance + currentStep: 0, // the current animation step + numSteps: 60, // default number of steps + easing: '', // the easing to use for this animation + render: null, // render function used by the animation service + + onAnimationProgress: null, // user specified callback to fire on each step of the animation + onAnimationComplete: null, // user specified callback to fire when the animation finishes +}); + +var core_animation = exports$2; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart.Animation instead + * @prop Chart.Animation#animationObject + * @deprecated since version 2.6.0 + * @todo remove at version 3 + */ +Object.defineProperty(exports$2.prototype, 'animationObject', { + get: function() { + return this; + } +}); + +/** + * Provided for backward compatibility, use Chart.Animation#chart instead + * @prop Chart.Animation#chartInstance + * @deprecated since version 2.6.0 + * @todo remove at version 3 + */ +Object.defineProperty(exports$2.prototype, 'chartInstance', { + get: function() { + return this.chart; + }, + set: function(value) { + this.chart = value; + } +}); + +core_defaults._set('global', { + animation: { + duration: 1000, + easing: 'easeOutQuart', + onProgress: helpers$1.noop, + onComplete: helpers$1.noop + } +}); + +var core_animations = { + animations: [], + request: null, + + /** + * @param {Chart} chart - The chart to animate. + * @param {Chart.Animation} animation - The animation that we will animate. + * @param {number} duration - The animation duration in ms. + * @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions + */ + addAnimation: function(chart, animation, duration, lazy) { + var animations = this.animations; + var i, ilen; + + animation.chart = chart; + animation.startTime = Date.now(); + animation.duration = duration; + + if (!lazy) { + chart.animating = true; + } + + for (i = 0, ilen = animations.length; i < ilen; ++i) { + if (animations[i].chart === chart) { + animations[i] = animation; + return; + } + } + + animations.push(animation); + + // If there are no animations queued, manually kickstart a digest, for lack of a better word + if (animations.length === 1) { + this.requestAnimationFrame(); + } + }, + + cancelAnimation: function(chart) { + var index = helpers$1.findIndex(this.animations, function(animation) { + return animation.chart === chart; + }); + + if (index !== -1) { + this.animations.splice(index, 1); + chart.animating = false; + } + }, + + requestAnimationFrame: function() { + var me = this; + if (me.request === null) { + // Skip animation frame requests until the active one is executed. + // This can happen when processing mouse events, e.g. 'mousemove' + // and 'mouseout' events will trigger multiple renders. + me.request = helpers$1.requestAnimFrame.call(window, function() { + me.request = null; + me.startDigest(); + }); + } + }, + + /** + * @private + */ + startDigest: function() { + var me = this; + + me.advance(); + + // Do we have more stuff to animate? + if (me.animations.length > 0) { + me.requestAnimationFrame(); + } + }, + + /** + * @private + */ + advance: function() { + var animations = this.animations; + var animation, chart, numSteps, nextStep; + var i = 0; + + // 1 animation per chart, so we are looping charts here + while (i < animations.length) { + animation = animations[i]; + chart = animation.chart; + numSteps = animation.numSteps; + + // Make sure that currentStep starts at 1 + // https://github.com/chartjs/Chart.js/issues/6104 + nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1; + animation.currentStep = Math.min(nextStep, numSteps); + + helpers$1.callback(animation.render, [chart, animation], chart); + helpers$1.callback(animation.onAnimationProgress, [animation], chart); + + if (animation.currentStep >= numSteps) { + helpers$1.callback(animation.onAnimationComplete, [animation], chart); + chart.animating = false; + animations.splice(i, 1); + } else { + ++i; + } + } + } +}; + +var resolve = helpers$1.options.resolve; + +var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift']; + +/** + * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice', + * 'unshift') and notify the listener AFTER the array has been altered. Listeners are + * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments. + */ +function listenArrayEvents(array, listener) { + if (array._chartjs) { + array._chartjs.listeners.push(listener); + return; + } + + Object.defineProperty(array, '_chartjs', { + configurable: true, + enumerable: false, + value: { + listeners: [listener] + } + }); + + arrayEvents.forEach(function(key) { + var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1); + var base = array[key]; + + Object.defineProperty(array, key, { + configurable: true, + enumerable: false, + value: function() { + var args = Array.prototype.slice.call(arguments); + var res = base.apply(this, args); + + helpers$1.each(array._chartjs.listeners, function(object) { + if (typeof object[method] === 'function') { + object[method].apply(object, args); + } + }); + + return res; + } + }); + }); +} + +/** + * Removes the given array event listener and cleanup extra attached properties (such as + * the _chartjs stub and overridden methods) if array doesn't have any more listeners. + */ +function unlistenArrayEvents(array, listener) { + var stub = array._chartjs; + if (!stub) { + return; + } + + var listeners = stub.listeners; + var index = listeners.indexOf(listener); + if (index !== -1) { + listeners.splice(index, 1); + } + + if (listeners.length > 0) { + return; + } + + arrayEvents.forEach(function(key) { + delete array[key]; + }); + + delete array._chartjs; +} + +// Base class for all dataset controllers (line, bar, etc) +var DatasetController = function(chart, datasetIndex) { + this.initialize(chart, datasetIndex); +}; + +helpers$1.extend(DatasetController.prototype, { + + /** + * Element type used to generate a meta dataset (e.g. Chart.element.Line). + * @type {Chart.core.element} + */ + datasetElementType: null, + + /** + * Element type used to generate a meta data (e.g. Chart.element.Point). + * @type {Chart.core.element} + */ + dataElementType: null, + + initialize: function(chart, datasetIndex) { + var me = this; + me.chart = chart; + me.index = datasetIndex; + me.linkScales(); + me.addElements(); + }, + + updateIndex: function(datasetIndex) { + this.index = datasetIndex; + }, + + linkScales: function() { + var me = this; + var meta = me.getMeta(); + var dataset = me.getDataset(); + + if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) { + meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id; + } + if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) { + meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id; + } + }, + + getDataset: function() { + return this.chart.data.datasets[this.index]; + }, + + getMeta: function() { + return this.chart.getDatasetMeta(this.index); + }, + + getScaleForId: function(scaleID) { + return this.chart.scales[scaleID]; + }, + + /** + * @private + */ + _getValueScaleId: function() { + return this.getMeta().yAxisID; + }, + + /** + * @private + */ + _getIndexScaleId: function() { + return this.getMeta().xAxisID; + }, + + /** + * @private + */ + _getValueScale: function() { + return this.getScaleForId(this._getValueScaleId()); + }, + + /** + * @private + */ + _getIndexScale: function() { + return this.getScaleForId(this._getIndexScaleId()); + }, + + reset: function() { + this.update(true); + }, + + /** + * @private + */ + destroy: function() { + if (this._data) { + unlistenArrayEvents(this._data, this); + } + }, + + createMetaDataset: function() { + var me = this; + var type = me.datasetElementType; + return type && new type({ + _chart: me.chart, + _datasetIndex: me.index + }); + }, + + createMetaData: function(index) { + var me = this; + var type = me.dataElementType; + return type && new type({ + _chart: me.chart, + _datasetIndex: me.index, + _index: index + }); + }, + + addElements: function() { + var me = this; + var meta = me.getMeta(); + var data = me.getDataset().data || []; + var metaData = meta.data; + var i, ilen; + + for (i = 0, ilen = data.length; i < ilen; ++i) { + metaData[i] = metaData[i] || me.createMetaData(i); + } + + meta.dataset = meta.dataset || me.createMetaDataset(); + }, + + addElementAndReset: function(index) { + var element = this.createMetaData(index); + this.getMeta().data.splice(index, 0, element); + this.updateElement(element, index, true); + }, + + buildOrUpdateElements: function() { + var me = this; + var dataset = me.getDataset(); + var data = dataset.data || (dataset.data = []); + + // In order to correctly handle data addition/deletion animation (an thus simulate + // real-time charts), we need to monitor these data modifications and synchronize + // the internal meta data accordingly. + if (me._data !== data) { + if (me._data) { + // This case happens when the user replaced the data array instance. + unlistenArrayEvents(me._data, me); + } + + if (data && Object.isExtensible(data)) { + listenArrayEvents(data, me); + } + me._data = data; + } + + // Re-sync meta data in case the user replaced the data array or if we missed + // any updates and so make sure that we handle number of datapoints changing. + me.resyncElements(); + }, + + update: helpers$1.noop, + + transition: function(easingValue) { + var meta = this.getMeta(); + var elements = meta.data || []; + var ilen = elements.length; + var i = 0; + + for (; i < ilen; ++i) { + elements[i].transition(easingValue); + } + + if (meta.dataset) { + meta.dataset.transition(easingValue); + } + }, + + draw: function() { + var meta = this.getMeta(); + var elements = meta.data || []; + var ilen = elements.length; + var i = 0; + + if (meta.dataset) { + meta.dataset.draw(); + } + + for (; i < ilen; ++i) { + elements[i].draw(); + } + }, + + removeHoverStyle: function(element) { + helpers$1.merge(element._model, element.$previousStyle || {}); + delete element.$previousStyle; + }, + + setHoverStyle: function(element) { + var dataset = this.chart.data.datasets[element._datasetIndex]; + var index = element._index; + var custom = element.custom || {}; + var model = element._model; + var getHoverColor = helpers$1.getHoverColor; + + element.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth + }; + + model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index); + model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index); + model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index); + }, + + /** + * @private + */ + resyncElements: function() { + var me = this; + var meta = me.getMeta(); + var data = me.getDataset().data; + var numMeta = meta.data.length; + var numData = data.length; + + if (numData < numMeta) { + meta.data.splice(numData, numMeta - numData); + } else if (numData > numMeta) { + me.insertElements(numMeta, numData - numMeta); + } + }, + + /** + * @private + */ + insertElements: function(start, count) { + for (var i = 0; i < count; ++i) { + this.addElementAndReset(start + i); + } + }, + + /** + * @private + */ + onDataPush: function() { + var count = arguments.length; + this.insertElements(this.getDataset().data.length - count, count); + }, + + /** + * @private + */ + onDataPop: function() { + this.getMeta().data.pop(); + }, + + /** + * @private + */ + onDataShift: function() { + this.getMeta().data.shift(); + }, + + /** + * @private + */ + onDataSplice: function(start, count) { + this.getMeta().data.splice(start, count); + this.insertElements(start, arguments.length - 2); + }, + + /** + * @private + */ + onDataUnshift: function() { + this.insertElements(0, arguments.length); + } +}); + +DatasetController.extend = helpers$1.inherits; + +var core_datasetController = DatasetController; + +core_defaults._set('global', { + elements: { + arc: { + backgroundColor: core_defaults.global.defaultColor, + borderColor: '#fff', + borderWidth: 2, + borderAlign: 'center' + } + } +}); + +var element_arc = core_element.extend({ + inLabelRange: function(mouseX) { + var vm = this._view; + + if (vm) { + return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2)); + } + return false; + }, + + inRange: function(chartX, chartY) { + var vm = this._view; + + if (vm) { + var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY}); + var angle = pointRelativePosition.angle; + var distance = pointRelativePosition.distance; + + // Sanitise angle range + var startAngle = vm.startAngle; + var endAngle = vm.endAngle; + while (endAngle < startAngle) { + endAngle += 2.0 * Math.PI; + } + while (angle > endAngle) { + angle -= 2.0 * Math.PI; + } + while (angle < startAngle) { + angle += 2.0 * Math.PI; + } + + // Check if within the range of the open/close angle + var betweenAngles = (angle >= startAngle && angle <= endAngle); + var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius); + + return (betweenAngles && withinRadius); + } + return false; + }, + + getCenterPoint: function() { + var vm = this._view; + var halfAngle = (vm.startAngle + vm.endAngle) / 2; + var halfRadius = (vm.innerRadius + vm.outerRadius) / 2; + return { + x: vm.x + Math.cos(halfAngle) * halfRadius, + y: vm.y + Math.sin(halfAngle) * halfRadius + }; + }, + + getArea: function() { + var vm = this._view; + return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2)); + }, + + tooltipPosition: function() { + var vm = this._view; + var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2); + var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius; + + return { + x: vm.x + (Math.cos(centreAngle) * rangeFromCentre), + y: vm.y + (Math.sin(centreAngle) * rangeFromCentre) + }; + }, + + draw: function() { + var ctx = this._chart.ctx; + var vm = this._view; + var sA = vm.startAngle; + var eA = vm.endAngle; + var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0; + var angleMargin; + + ctx.save(); + + ctx.beginPath(); + ctx.arc(vm.x, vm.y, Math.max(vm.outerRadius - pixelMargin, 0), sA, eA); + ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true); + ctx.closePath(); + + ctx.fillStyle = vm.backgroundColor; + ctx.fill(); + + if (vm.borderWidth) { + if (vm.borderAlign === 'inner') { + // Draw an inner border by cliping the arc and drawing a double-width border + // Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders + ctx.beginPath(); + angleMargin = pixelMargin / vm.outerRadius; + ctx.arc(vm.x, vm.y, vm.outerRadius, sA - angleMargin, eA + angleMargin); + if (vm.innerRadius > pixelMargin) { + angleMargin = pixelMargin / vm.innerRadius; + ctx.arc(vm.x, vm.y, vm.innerRadius - pixelMargin, eA + angleMargin, sA - angleMargin, true); + } else { + ctx.arc(vm.x, vm.y, pixelMargin, eA + Math.PI / 2, sA - Math.PI / 2); + } + ctx.closePath(); + ctx.clip(); + + ctx.beginPath(); + ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA); + ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true); + ctx.closePath(); + + ctx.lineWidth = vm.borderWidth * 2; + ctx.lineJoin = 'round'; + } else { + ctx.lineWidth = vm.borderWidth; + ctx.lineJoin = 'bevel'; + } + + ctx.strokeStyle = vm.borderColor; + ctx.stroke(); + } + + ctx.restore(); + } +}); + +var valueOrDefault$1 = helpers$1.valueOrDefault; + +var defaultColor = core_defaults.global.defaultColor; + +core_defaults._set('global', { + elements: { + line: { + tension: 0.4, + backgroundColor: defaultColor, + borderWidth: 3, + borderColor: defaultColor, + borderCapStyle: 'butt', + borderDash: [], + borderDashOffset: 0.0, + borderJoinStyle: 'miter', + capBezierPoints: true, + fill: true, // do we fill in the area between the line and its base axis + } + } +}); + +var element_line = core_element.extend({ + draw: function() { + var me = this; + var vm = me._view; + var ctx = me._chart.ctx; + var spanGaps = vm.spanGaps; + var points = me._children.slice(); // clone array + var globalDefaults = core_defaults.global; + var globalOptionLineElements = globalDefaults.elements.line; + var lastDrawnIndex = -1; + var index, current, previous, currentVM; + + // If we are looping, adding the first point again + if (me._loop && points.length) { + points.push(points[0]); + } + + ctx.save(); + + // Stroke Line Options + ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle; + + // IE 9 and 10 do not support line dash + if (ctx.setLineDash) { + ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash); + } + + ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset); + ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle; + ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth); + ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor; + + // Stroke Line + ctx.beginPath(); + lastDrawnIndex = -1; + + for (index = 0; index < points.length; ++index) { + current = points[index]; + previous = helpers$1.previousItem(points, index); + currentVM = current._view; + + // First point moves to it's starting position no matter what + if (index === 0) { + if (!currentVM.skip) { + ctx.moveTo(currentVM.x, currentVM.y); + lastDrawnIndex = index; + } + } else { + previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex]; + + if (!currentVM.skip) { + if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) { + // There was a gap and this is the first point after the gap + ctx.moveTo(currentVM.x, currentVM.y); + } else { + // Line to next point + helpers$1.canvas.lineTo(ctx, previous._view, current._view); + } + lastDrawnIndex = index; + } + } + } + + ctx.stroke(); + ctx.restore(); + } +}); + +var valueOrDefault$2 = helpers$1.valueOrDefault; + +var defaultColor$1 = core_defaults.global.defaultColor; + +core_defaults._set('global', { + elements: { + point: { + radius: 3, + pointStyle: 'circle', + backgroundColor: defaultColor$1, + borderColor: defaultColor$1, + borderWidth: 1, + // Hover + hitRadius: 1, + hoverRadius: 4, + hoverBorderWidth: 1 + } + } +}); + +function xRange(mouseX) { + var vm = this._view; + return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false; +} + +function yRange(mouseY) { + var vm = this._view; + return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false; +} + +var element_point = core_element.extend({ + inRange: function(mouseX, mouseY) { + var vm = this._view; + return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false; + }, + + inLabelRange: xRange, + inXRange: xRange, + inYRange: yRange, + + getCenterPoint: function() { + var vm = this._view; + return { + x: vm.x, + y: vm.y + }; + }, + + getArea: function() { + return Math.PI * Math.pow(this._view.radius, 2); + }, + + tooltipPosition: function() { + var vm = this._view; + return { + x: vm.x, + y: vm.y, + padding: vm.radius + vm.borderWidth + }; + }, + + draw: function(chartArea) { + var vm = this._view; + var ctx = this._chart.ctx; + var pointStyle = vm.pointStyle; + var rotation = vm.rotation; + var radius = vm.radius; + var x = vm.x; + var y = vm.y; + var globalDefaults = core_defaults.global; + var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow + + if (vm.skip) { + return; + } + + // Clipping for Points. + if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) { + ctx.strokeStyle = vm.borderColor || defaultColor; + ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth); + ctx.fillStyle = vm.backgroundColor || defaultColor; + helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation); + } + } +}); + +var defaultColor$2 = core_defaults.global.defaultColor; + +core_defaults._set('global', { + elements: { + rectangle: { + backgroundColor: defaultColor$2, + borderColor: defaultColor$2, + borderSkipped: 'bottom', + borderWidth: 0 + } + } +}); + +function isVertical(vm) { + return vm && vm.width !== undefined; +} + +/** + * Helper function to get the bounds of the bar regardless of the orientation + * @param bar {Chart.Element.Rectangle} the bar + * @return {Bounds} bounds of the bar + * @private + */ +function getBarBounds(vm) { + var x1, x2, y1, y2, half; + + if (isVertical(vm)) { + half = vm.width / 2; + x1 = vm.x - half; + x2 = vm.x + half; + y1 = Math.min(vm.y, vm.base); + y2 = Math.max(vm.y, vm.base); + } else { + half = vm.height / 2; + x1 = Math.min(vm.x, vm.base); + x2 = Math.max(vm.x, vm.base); + y1 = vm.y - half; + y2 = vm.y + half; + } + + return { + left: x1, + top: y1, + right: x2, + bottom: y2 + }; +} + +function swap(orig, v1, v2) { + return orig === v1 ? v2 : orig === v2 ? v1 : orig; +} + +function parseBorderSkipped(vm) { + var edge = vm.borderSkipped; + var res = {}; + + if (!edge) { + return res; + } + + if (vm.horizontal) { + if (vm.base > vm.x) { + edge = swap(edge, 'left', 'right'); + } + } else if (vm.base < vm.y) { + edge = swap(edge, 'bottom', 'top'); + } + + res[edge] = true; + return res; +} + +function parseBorderWidth(vm, maxW, maxH) { + var value = vm.borderWidth; + var skip = parseBorderSkipped(vm); + var t, r, b, l; + + if (helpers$1.isObject(value)) { + t = +value.top || 0; + r = +value.right || 0; + b = +value.bottom || 0; + l = +value.left || 0; + } else { + t = r = b = l = +value || 0; + } + + return { + t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t, + r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r, + b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b, + l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l + }; +} + +function boundingRects(vm) { + var bounds = getBarBounds(vm); + var width = bounds.right - bounds.left; + var height = bounds.bottom - bounds.top; + var border = parseBorderWidth(vm, width / 2, height / 2); + + return { + outer: { + x: bounds.left, + y: bounds.top, + w: width, + h: height + }, + inner: { + x: bounds.left + border.l, + y: bounds.top + border.t, + w: width - border.l - border.r, + h: height - border.t - border.b + } + }; +} + +function inRange(vm, x, y) { + var skipX = x === null; + var skipY = y === null; + var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm); + + return bounds + && (skipX || x >= bounds.left && x <= bounds.right) + && (skipY || y >= bounds.top && y <= bounds.bottom); +} + +var element_rectangle = core_element.extend({ + draw: function() { + var ctx = this._chart.ctx; + var vm = this._view; + var rects = boundingRects(vm); + var outer = rects.outer; + var inner = rects.inner; + + ctx.fillStyle = vm.backgroundColor; + ctx.fillRect(outer.x, outer.y, outer.w, outer.h); + + if (outer.w === inner.w && outer.h === inner.h) { + return; + } + + ctx.save(); + ctx.beginPath(); + ctx.rect(outer.x, outer.y, outer.w, outer.h); + ctx.clip(); + ctx.fillStyle = vm.borderColor; + ctx.rect(inner.x, inner.y, inner.w, inner.h); + ctx.fill('evenodd'); + ctx.restore(); + }, + + height: function() { + var vm = this._view; + return vm.base - vm.y; + }, + + inRange: function(mouseX, mouseY) { + return inRange(this._view, mouseX, mouseY); + }, + + inLabelRange: function(mouseX, mouseY) { + var vm = this._view; + return isVertical(vm) + ? inRange(vm, mouseX, null) + : inRange(vm, null, mouseY); + }, + + inXRange: function(mouseX) { + return inRange(this._view, mouseX, null); + }, + + inYRange: function(mouseY) { + return inRange(this._view, null, mouseY); + }, + + getCenterPoint: function() { + var vm = this._view; + var x, y; + if (isVertical(vm)) { + x = vm.x; + y = (vm.y + vm.base) / 2; + } else { + x = (vm.x + vm.base) / 2; + y = vm.y; + } + + return {x: x, y: y}; + }, + + getArea: function() { + var vm = this._view; + + return isVertical(vm) + ? vm.width * Math.abs(vm.y - vm.base) + : vm.height * Math.abs(vm.x - vm.base); + }, + + tooltipPosition: function() { + var vm = this._view; + return { + x: vm.x, + y: vm.y + }; + } +}); + +var elements = {}; +var Arc = element_arc; +var Line = element_line; +var Point = element_point; +var Rectangle = element_rectangle; +elements.Arc = Arc; +elements.Line = Line; +elements.Point = Point; +elements.Rectangle = Rectangle; + +var resolve$1 = helpers$1.options.resolve; + +core_defaults._set('bar', { + hover: { + mode: 'label' + }, + + scales: { + xAxes: [{ + type: 'category', + categoryPercentage: 0.8, + barPercentage: 0.9, + offset: true, + gridLines: { + offsetGridLines: true + } + }], + + yAxes: [{ + type: 'linear' + }] + } +}); + +/** + * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap. + * @private + */ +function computeMinSampleSize(scale, pixels) { + var min = scale.isHorizontal() ? scale.width : scale.height; + var ticks = scale.getTicks(); + var prev, curr, i, ilen; + + for (i = 1, ilen = pixels.length; i < ilen; ++i) { + min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1])); + } + + for (i = 0, ilen = ticks.length; i < ilen; ++i) { + curr = scale.getPixelForTick(i); + min = i > 0 ? Math.min(min, curr - prev) : min; + prev = curr; + } + + return min; +} + +/** + * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null, + * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This + * mode currently always generates bars equally sized (until we introduce scriptable options?). + * @private + */ +function computeFitCategoryTraits(index, ruler, options) { + var thickness = options.barThickness; + var count = ruler.stackCount; + var curr = ruler.pixels[index]; + var size, ratio; + + if (helpers$1.isNullOrUndef(thickness)) { + size = ruler.min * options.categoryPercentage; + ratio = options.barPercentage; + } else { + // When bar thickness is enforced, category and bar percentages are ignored. + // Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%') + // and deprecate barPercentage since this value is ignored when thickness is absolute. + size = thickness * count; + ratio = 1; + } + + return { + chunk: size / count, + ratio: ratio, + start: curr - (size / 2) + }; +} + +/** + * Computes an "optimal" category that globally arranges bars side by side (no gap when + * percentage options are 1), based on the previous and following categories. This mode + * generates bars with different widths when data are not evenly spaced. + * @private + */ +function computeFlexCategoryTraits(index, ruler, options) { + var pixels = ruler.pixels; + var curr = pixels[index]; + var prev = index > 0 ? pixels[index - 1] : null; + var next = index < pixels.length - 1 ? pixels[index + 1] : null; + var percent = options.categoryPercentage; + var start, size; + + if (prev === null) { + // first data: its size is double based on the next point or, + // if it's also the last data, we use the scale size. + prev = curr - (next === null ? ruler.end - ruler.start : next - curr); + } + + if (next === null) { + // last data: its size is also double based on the previous point. + next = curr + curr - prev; + } + + start = curr - (curr - Math.min(prev, next)) / 2 * percent; + size = Math.abs(next - prev) / 2 * percent; + + return { + chunk: size / ruler.stackCount, + ratio: options.barPercentage, + start: start + }; +} + +var controller_bar = core_datasetController.extend({ + + dataElementType: elements.Rectangle, + + initialize: function() { + var me = this; + var meta; + + core_datasetController.prototype.initialize.apply(me, arguments); + + meta = me.getMeta(); + meta.stack = me.getDataset().stack; + meta.bar = true; + }, + + update: function(reset) { + var me = this; + var rects = me.getMeta().data; + var i, ilen; + + me._ruler = me.getRuler(); + + for (i = 0, ilen = rects.length; i < ilen; ++i) { + me.updateElement(rects[i], i, reset); + } + }, + + updateElement: function(rectangle, index, reset) { + var me = this; + var meta = me.getMeta(); + var dataset = me.getDataset(); + var options = me._resolveElementOptions(rectangle, index); + + rectangle._xScale = me.getScaleForId(meta.xAxisID); + rectangle._yScale = me.getScaleForId(meta.yAxisID); + rectangle._datasetIndex = me.index; + rectangle._index = index; + rectangle._model = { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderSkipped: options.borderSkipped, + borderWidth: options.borderWidth, + datasetLabel: dataset.label, + label: me.chart.data.labels[index] + }; + + me._updateElementGeometry(rectangle, index, reset); + + rectangle.pivot(); + }, + + /** + * @private + */ + _updateElementGeometry: function(rectangle, index, reset) { + var me = this; + var model = rectangle._model; + var vscale = me._getValueScale(); + var base = vscale.getBasePixel(); + var horizontal = vscale.isHorizontal(); + var ruler = me._ruler || me.getRuler(); + var vpixels = me.calculateBarValuePixels(me.index, index); + var ipixels = me.calculateBarIndexPixels(me.index, index, ruler); + + model.horizontal = horizontal; + model.base = reset ? base : vpixels.base; + model.x = horizontal ? reset ? base : vpixels.head : ipixels.center; + model.y = horizontal ? ipixels.center : reset ? base : vpixels.head; + model.height = horizontal ? ipixels.size : undefined; + model.width = horizontal ? undefined : ipixels.size; + }, + + /** + * Returns the stacks based on groups and bar visibility. + * @param {number} [last] - The dataset index + * @returns {string[]} The list of stack IDs + * @private + */ + _getStacks: function(last) { + var me = this; + var chart = me.chart; + var scale = me._getIndexScale(); + var stacked = scale.options.stacked; + var ilen = last === undefined ? chart.data.datasets.length : last + 1; + var stacks = []; + var i, meta; + + for (i = 0; i < ilen; ++i) { + meta = chart.getDatasetMeta(i); + if (meta.bar && chart.isDatasetVisible(i) && + (stacked === false || + (stacked === true && stacks.indexOf(meta.stack) === -1) || + (stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) { + stacks.push(meta.stack); + } + } + + return stacks; + }, + + /** + * Returns the effective number of stacks based on groups and bar visibility. + * @private + */ + getStackCount: function() { + return this._getStacks().length; + }, + + /** + * Returns the stack index for the given dataset based on groups and bar visibility. + * @param {number} [datasetIndex] - The dataset index + * @param {string} [name] - The stack name to find + * @returns {number} The stack index + * @private + */ + getStackIndex: function(datasetIndex, name) { + var stacks = this._getStacks(datasetIndex); + var index = (name !== undefined) + ? stacks.indexOf(name) + : -1; // indexOf returns -1 if element is not present + + return (index === -1) + ? stacks.length - 1 + : index; + }, + + /** + * @private + */ + getRuler: function() { + var me = this; + var scale = me._getIndexScale(); + var stackCount = me.getStackCount(); + var datasetIndex = me.index; + var isHorizontal = scale.isHorizontal(); + var start = isHorizontal ? scale.left : scale.top; + var end = start + (isHorizontal ? scale.width : scale.height); + var pixels = []; + var i, ilen, min; + + for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) { + pixels.push(scale.getPixelForValue(null, i, datasetIndex)); + } + + min = helpers$1.isNullOrUndef(scale.options.barThickness) + ? computeMinSampleSize(scale, pixels) + : -1; + + return { + min: min, + pixels: pixels, + start: start, + end: end, + stackCount: stackCount, + scale: scale + }; + }, + + /** + * Note: pixel values are not clamped to the scale area. + * @private + */ + calculateBarValuePixels: function(datasetIndex, index) { + var me = this; + var chart = me.chart; + var meta = me.getMeta(); + var scale = me._getValueScale(); + var isHorizontal = scale.isHorizontal(); + var datasets = chart.data.datasets; + var value = +scale.getRightValue(datasets[datasetIndex].data[index]); + var minBarLength = scale.options.minBarLength; + var stacked = scale.options.stacked; + var stack = meta.stack; + var start = 0; + var i, imeta, ivalue, base, head, size; + + if (stacked || (stacked === undefined && stack !== undefined)) { + for (i = 0; i < datasetIndex; ++i) { + imeta = chart.getDatasetMeta(i); + + if (imeta.bar && + imeta.stack === stack && + imeta.controller._getValueScaleId() === scale.id && + chart.isDatasetVisible(i)) { + + ivalue = +scale.getRightValue(datasets[i].data[index]); + if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) { + start += ivalue; + } + } + } + } + + base = scale.getPixelForValue(start); + head = scale.getPixelForValue(start + value); + size = head - base; + + if (minBarLength !== undefined && Math.abs(size) < minBarLength) { + size = minBarLength; + if (value >= 0 && !isHorizontal || value < 0 && isHorizontal) { + head = base - minBarLength; + } else { + head = base + minBarLength; + } + } + + return { + size: size, + base: base, + head: head, + center: head + size / 2 + }; + }, + + /** + * @private + */ + calculateBarIndexPixels: function(datasetIndex, index, ruler) { + var me = this; + var options = ruler.scale.options; + var range = options.barThickness === 'flex' + ? computeFlexCategoryTraits(index, ruler, options) + : computeFitCategoryTraits(index, ruler, options); + + var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack); + var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2); + var size = Math.min( + helpers$1.valueOrDefault(options.maxBarThickness, Infinity), + range.chunk * range.ratio); + + return { + base: center - size / 2, + head: center + size / 2, + center: center, + size: size + }; + }, + + draw: function() { + var me = this; + var chart = me.chart; + var scale = me._getValueScale(); + var rects = me.getMeta().data; + var dataset = me.getDataset(); + var ilen = rects.length; + var i = 0; + + helpers$1.canvas.clipArea(chart.ctx, chart.chartArea); + + for (; i < ilen; ++i) { + if (!isNaN(scale.getRightValue(dataset.data[i]))) { + rects[i].draw(); + } + } + + helpers$1.canvas.unclipArea(chart.ctx); + }, + + /** + * @private + */ + _resolveElementOptions: function(rectangle, index) { + var me = this; + var chart = me.chart; + var datasets = chart.data.datasets; + var dataset = datasets[me.index]; + var custom = rectangle.custom || {}; + var options = chart.options.elements.rectangle; + var values = {}; + var i, ilen, key; + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + var keys = [ + 'backgroundColor', + 'borderColor', + 'borderSkipped', + 'borderWidth' + ]; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$1([ + custom[key], + dataset[key], + options[key] + ], context, index); + } + + return values; + } +}); + +var valueOrDefault$3 = helpers$1.valueOrDefault; +var resolve$2 = helpers$1.options.resolve; + +core_defaults._set('bubble', { + hover: { + mode: 'single' + }, + + scales: { + xAxes: [{ + type: 'linear', // bubble should probably use a linear scale by default + position: 'bottom', + id: 'x-axis-0' // need an ID so datasets can reference the scale + }], + yAxes: [{ + type: 'linear', + position: 'left', + id: 'y-axis-0' + }] + }, + + tooltips: { + callbacks: { + title: function() { + // Title doesn't make sense for scatter since we format the data as a point + return ''; + }, + label: function(item, data) { + var datasetLabel = data.datasets[item.datasetIndex].label || ''; + var dataPoint = data.datasets[item.datasetIndex].data[item.index]; + return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')'; + } + } + } +}); + +var controller_bubble = core_datasetController.extend({ + /** + * @protected + */ + dataElementType: elements.Point, + + /** + * @protected + */ + update: function(reset) { + var me = this; + var meta = me.getMeta(); + var points = meta.data; + + // Update Points + helpers$1.each(points, function(point, index) { + me.updateElement(point, index, reset); + }); + }, + + /** + * @protected + */ + updateElement: function(point, index, reset) { + var me = this; + var meta = me.getMeta(); + var custom = point.custom || {}; + var xScale = me.getScaleForId(meta.xAxisID); + var yScale = me.getScaleForId(meta.yAxisID); + var options = me._resolveElementOptions(point, index); + var data = me.getDataset().data[index]; + var dsIndex = me.index; + + var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex); + var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex); + + point._xScale = xScale; + point._yScale = yScale; + point._options = options; + point._datasetIndex = dsIndex; + point._index = index; + point._model = { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + hitRadius: options.hitRadius, + pointStyle: options.pointStyle, + rotation: options.rotation, + radius: reset ? 0 : options.radius, + skip: custom.skip || isNaN(x) || isNaN(y), + x: x, + y: y, + }; + + point.pivot(); + }, + + /** + * @protected + */ + setHoverStyle: function(point) { + var model = point._model; + var options = point._options; + var getHoverColor = helpers$1.getHoverColor; + + point.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + radius: model.radius + }; + + model.backgroundColor = valueOrDefault$3(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$3(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$3(options.hoverBorderWidth, options.borderWidth); + model.radius = options.radius + options.hoverRadius; + }, + + /** + * @private + */ + _resolveElementOptions: function(point, index) { + var me = this; + var chart = me.chart; + var datasets = chart.data.datasets; + var dataset = datasets[me.index]; + var custom = point.custom || {}; + var options = chart.options.elements.point; + var data = dataset.data[index]; + var values = {}; + var i, ilen, key; + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + var keys = [ + 'backgroundColor', + 'borderColor', + 'borderWidth', + 'hoverBackgroundColor', + 'hoverBorderColor', + 'hoverBorderWidth', + 'hoverRadius', + 'hitRadius', + 'pointStyle', + 'rotation' + ]; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$2([ + custom[key], + dataset[key], + options[key] + ], context, index); + } + + // Custom radius resolution + values.radius = resolve$2([ + custom.radius, + data ? data.r : undefined, + dataset.radius, + options.radius + ], context, index); + + return values; + } +}); + +var resolve$3 = helpers$1.options.resolve; +var valueOrDefault$4 = helpers$1.valueOrDefault; + +core_defaults._set('doughnut', { + animation: { + // Boolean - Whether we animate the rotation of the Doughnut + animateRotate: true, + // Boolean - Whether we animate scaling the Doughnut from the centre + animateScale: false + }, + hover: { + mode: 'single' + }, + legendCallback: function(chart) { + var text = []; + text.push(''); + return text.join(''); + }, + legend: { + labels: { + generateLabels: function(chart) { + var data = chart.data; + if (data.labels.length && data.datasets.length) { + return data.labels.map(function(label, i) { + var meta = chart.getDatasetMeta(0); + var ds = data.datasets[0]; + var arc = meta.data[i]; + var custom = arc && arc.custom || {}; + var arcOpts = chart.options.elements.arc; + var fill = resolve$3([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i); + var stroke = resolve$3([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i); + var bw = resolve$3([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i); + + return { + text: label, + fillStyle: fill, + strokeStyle: stroke, + lineWidth: bw, + hidden: isNaN(ds.data[i]) || meta.data[i].hidden, + + // Extra data used for toggling the correct item + index: i + }; + }); + } + return []; + } + }, + + onClick: function(e, legendItem) { + var index = legendItem.index; + var chart = this.chart; + var i, ilen, meta; + + for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { + meta = chart.getDatasetMeta(i); + // toggle visibility of index if exists + if (meta.data[index]) { + meta.data[index].hidden = !meta.data[index].hidden; + } + } + + chart.update(); + } + }, + + // The percentage of the chart that we cut out of the middle. + cutoutPercentage: 50, + + // The rotation of the chart, where the first data arc begins. + rotation: Math.PI * -0.5, + + // The total circumference of the chart. + circumference: Math.PI * 2.0, + + // Need to override these to give a nice default + tooltips: { + callbacks: { + title: function() { + return ''; + }, + label: function(tooltipItem, data) { + var dataLabel = data.labels[tooltipItem.index]; + var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index]; + + if (helpers$1.isArray(dataLabel)) { + // show value on first line of multiline label + // need to clone because we are changing the value + dataLabel = dataLabel.slice(); + dataLabel[0] += value; + } else { + dataLabel += value; + } + + return dataLabel; + } + } + } +}); + +var controller_doughnut = core_datasetController.extend({ + + dataElementType: elements.Arc, + + linkScales: helpers$1.noop, + + // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly + getRingIndex: function(datasetIndex) { + var ringIndex = 0; + + for (var j = 0; j < datasetIndex; ++j) { + if (this.chart.isDatasetVisible(j)) { + ++ringIndex; + } + } + + return ringIndex; + }, + + update: function(reset) { + var me = this; + var chart = me.chart; + var chartArea = chart.chartArea; + var opts = chart.options; + var availableWidth = chartArea.right - chartArea.left; + var availableHeight = chartArea.bottom - chartArea.top; + var minSize = Math.min(availableWidth, availableHeight); + var offset = {x: 0, y: 0}; + var meta = me.getMeta(); + var arcs = meta.data; + var cutoutPercentage = opts.cutoutPercentage; + var circumference = opts.circumference; + var chartWeight = me._getRingWeight(me.index); + var i, ilen; + + // If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc + if (circumference < Math.PI * 2.0) { + var startAngle = opts.rotation % (Math.PI * 2.0); + startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0); + var endAngle = startAngle + circumference; + var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)}; + var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)}; + var contains0 = (startAngle <= 0 && endAngle >= 0) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle); + var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle); + var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle); + var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle); + var cutout = cutoutPercentage / 100.0; + var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))}; + var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))}; + var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5}; + minSize = Math.min(availableWidth / size.width, availableHeight / size.height); + offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5}; + } + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + arcs[i]._options = me._resolveElementOptions(arcs[i], i); + } + + chart.borderWidth = me.getMaxBorderWidth(); + chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0); + chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0); + chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1); + chart.offsetX = offset.x * chart.outerRadius; + chart.offsetY = offset.y * chart.outerRadius; + + meta.total = me.calculateTotal(); + + me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index); + me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0); + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + me.updateElement(arcs[i], i, reset); + } + }, + + updateElement: function(arc, index, reset) { + var me = this; + var chart = me.chart; + var chartArea = chart.chartArea; + var opts = chart.options; + var animationOpts = opts.animation; + var centerX = (chartArea.left + chartArea.right) / 2; + var centerY = (chartArea.top + chartArea.bottom) / 2; + var startAngle = opts.rotation; // non reset case handled later + var endAngle = opts.rotation; // non reset case handled later + var dataset = me.getDataset(); + var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI)); + var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius; + var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius; + var options = arc._options || {}; + + helpers$1.extend(arc, { + // Utility + _datasetIndex: me.index, + _index: index, + + // Desired view properties + _model: { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + borderAlign: options.borderAlign, + x: centerX + chart.offsetX, + y: centerY + chart.offsetY, + startAngle: startAngle, + endAngle: endAngle, + circumference: circumference, + outerRadius: outerRadius, + innerRadius: innerRadius, + label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index]) + } + }); + + var model = arc._model; + + // Set correct angles if not resetting + if (!reset || !animationOpts.animateRotate) { + if (index === 0) { + model.startAngle = opts.rotation; + } else { + model.startAngle = me.getMeta().data[index - 1]._model.endAngle; + } + + model.endAngle = model.startAngle + model.circumference; + } + + arc.pivot(); + }, + + calculateTotal: function() { + var dataset = this.getDataset(); + var meta = this.getMeta(); + var total = 0; + var value; + + helpers$1.each(meta.data, function(element, index) { + value = dataset.data[index]; + if (!isNaN(value) && !element.hidden) { + total += Math.abs(value); + } + }); + + /* if (total === 0) { + total = NaN; + }*/ + + return total; + }, + + calculateCircumference: function(value) { + var total = this.getMeta().total; + if (total > 0 && !isNaN(value)) { + return (Math.PI * 2.0) * (Math.abs(value) / total); + } + return 0; + }, + + // gets the max border or hover width to properly scale pie charts + getMaxBorderWidth: function(arcs) { + var me = this; + var max = 0; + var chart = me.chart; + var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth; + + if (!arcs) { + // Find the outmost visible dataset + for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) { + if (chart.isDatasetVisible(i)) { + meta = chart.getDatasetMeta(i); + arcs = meta.data; + if (i !== me.index) { + controller = meta.controller; + } + break; + } + } + } + + if (!arcs) { + return 0; + } + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + arc = arcs[i]; + options = controller ? controller._resolveElementOptions(arc, i) : arc._options; + if (options.borderAlign !== 'inner') { + borderWidth = options.borderWidth; + hoverWidth = options.hoverBorderWidth; + + max = borderWidth > max ? borderWidth : max; + max = hoverWidth > max ? hoverWidth : max; + } + } + return max; + }, + + /** + * @protected + */ + setHoverStyle: function(arc) { + var model = arc._model; + var options = arc._options; + var getHoverColor = helpers$1.getHoverColor; + + arc.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + }; + + model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth); + }, + + /** + * @private + */ + _resolveElementOptions: function(arc, index) { + var me = this; + var chart = me.chart; + var dataset = me.getDataset(); + var custom = arc.custom || {}; + var options = chart.options.elements.arc; + var values = {}; + var i, ilen, key; + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + var keys = [ + 'backgroundColor', + 'borderColor', + 'borderWidth', + 'borderAlign', + 'hoverBackgroundColor', + 'hoverBorderColor', + 'hoverBorderWidth', + ]; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$3([ + custom[key], + dataset[key], + options[key] + ], context, index); + } + + return values; + }, + + /** + * Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly + * @private + */ + _getRingWeightOffset: function(datasetIndex) { + var ringWeightOffset = 0; + + for (var i = 0; i < datasetIndex; ++i) { + if (this.chart.isDatasetVisible(i)) { + ringWeightOffset += this._getRingWeight(i); + } + } + + return ringWeightOffset; + }, + + /** + * @private + */ + _getRingWeight: function(dataSetIndex) { + return Math.max(valueOrDefault$4(this.chart.data.datasets[dataSetIndex].weight, 1), 0); + }, + + /** + * Returns the sum of all visibile data set weights. This value can be 0. + * @private + */ + _getVisibleDatasetWeightTotal: function() { + return this._getRingWeightOffset(this.chart.data.datasets.length); + } +}); + +core_defaults._set('horizontalBar', { + hover: { + mode: 'index', + axis: 'y' + }, + + scales: { + xAxes: [{ + type: 'linear', + position: 'bottom' + }], + + yAxes: [{ + type: 'category', + position: 'left', + categoryPercentage: 0.8, + barPercentage: 0.9, + offset: true, + gridLines: { + offsetGridLines: true + } + }] + }, + + elements: { + rectangle: { + borderSkipped: 'left' + } + }, + + tooltips: { + mode: 'index', + axis: 'y' + } +}); + +var controller_horizontalBar = controller_bar.extend({ + /** + * @private + */ + _getValueScaleId: function() { + return this.getMeta().xAxisID; + }, + + /** + * @private + */ + _getIndexScaleId: function() { + return this.getMeta().yAxisID; + } +}); + +var valueOrDefault$5 = helpers$1.valueOrDefault; +var resolve$4 = helpers$1.options.resolve; +var isPointInArea = helpers$1.canvas._isPointInArea; + +core_defaults._set('line', { + showLines: true, + spanGaps: false, + + hover: { + mode: 'label' + }, + + scales: { + xAxes: [{ + type: 'category', + id: 'x-axis-0' + }], + yAxes: [{ + type: 'linear', + id: 'y-axis-0' + }] + } +}); + +function lineEnabled(dataset, options) { + return valueOrDefault$5(dataset.showLine, options.showLines); +} + +var controller_line = core_datasetController.extend({ + + datasetElementType: elements.Line, + + dataElementType: elements.Point, + + update: function(reset) { + var me = this; + var meta = me.getMeta(); + var line = meta.dataset; + var points = meta.data || []; + var scale = me.getScaleForId(meta.yAxisID); + var dataset = me.getDataset(); + var showLine = lineEnabled(dataset, me.chart.options); + var i, ilen; + + // Update Line + if (showLine) { + // Compatibility: If the properties are defined with only the old name, use those values + if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) { + dataset.lineTension = dataset.tension; + } + + // Utility + line._scale = scale; + line._datasetIndex = me.index; + // Data + line._children = points; + // Model + line._model = me._resolveLineOptions(line); + + line.pivot(); + } + + // Update Points + for (i = 0, ilen = points.length; i < ilen; ++i) { + me.updateElement(points[i], i, reset); + } + + if (showLine && line._model.tension !== 0) { + me.updateBezierControlPoints(); + } + + // Now pivot the point for animation + for (i = 0, ilen = points.length; i < ilen; ++i) { + points[i].pivot(); + } + }, + + updateElement: function(point, index, reset) { + var me = this; + var meta = me.getMeta(); + var custom = point.custom || {}; + var dataset = me.getDataset(); + var datasetIndex = me.index; + var value = dataset.data[index]; + var yScale = me.getScaleForId(meta.yAxisID); + var xScale = me.getScaleForId(meta.xAxisID); + var lineModel = meta.dataset._model; + var x, y; + + var options = me._resolvePointOptions(point, index); + + x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex); + y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex); + + // Utility + point._xScale = xScale; + point._yScale = yScale; + point._options = options; + point._datasetIndex = datasetIndex; + point._index = index; + + // Desired view properties + point._model = { + x: x, + y: y, + skip: custom.skip || isNaN(x) || isNaN(y), + // Appearance + radius: options.radius, + pointStyle: options.pointStyle, + rotation: options.rotation, + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + tension: valueOrDefault$5(custom.tension, lineModel ? lineModel.tension : 0), + steppedLine: lineModel ? lineModel.steppedLine : false, + // Tooltip + hitRadius: options.hitRadius + }; + }, + + /** + * @private + */ + _resolvePointOptions: function(element, index) { + var me = this; + var chart = me.chart; + var dataset = chart.data.datasets[me.index]; + var custom = element.custom || {}; + var options = chart.options.elements.point; + var values = {}; + var i, ilen, key; + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + var ELEMENT_OPTIONS = { + backgroundColor: 'pointBackgroundColor', + borderColor: 'pointBorderColor', + borderWidth: 'pointBorderWidth', + hitRadius: 'pointHitRadius', + hoverBackgroundColor: 'pointHoverBackgroundColor', + hoverBorderColor: 'pointHoverBorderColor', + hoverBorderWidth: 'pointHoverBorderWidth', + hoverRadius: 'pointHoverRadius', + pointStyle: 'pointStyle', + radius: 'pointRadius', + rotation: 'pointRotation' + }; + var keys = Object.keys(ELEMENT_OPTIONS); + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$4([ + custom[key], + dataset[ELEMENT_OPTIONS[key]], + dataset[key], + options[key] + ], context, index); + } + + return values; + }, + + /** + * @private + */ + _resolveLineOptions: function(element) { + var me = this; + var chart = me.chart; + var dataset = chart.data.datasets[me.index]; + var custom = element.custom || {}; + var options = chart.options; + var elementOptions = options.elements.line; + var values = {}; + var i, ilen, key; + + var keys = [ + 'backgroundColor', + 'borderWidth', + 'borderColor', + 'borderCapStyle', + 'borderDash', + 'borderDashOffset', + 'borderJoinStyle', + 'fill', + 'cubicInterpolationMode' + ]; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$4([ + custom[key], + dataset[key], + elementOptions[key] + ]); + } + + // The default behavior of lines is to break at null values, according + // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158 + // This option gives lines the ability to span gaps + values.spanGaps = valueOrDefault$5(dataset.spanGaps, options.spanGaps); + values.tension = valueOrDefault$5(dataset.lineTension, elementOptions.tension); + values.steppedLine = resolve$4([custom.steppedLine, dataset.steppedLine, elementOptions.stepped]); + + return values; + }, + + calculatePointY: function(value, index, datasetIndex) { + var me = this; + var chart = me.chart; + var meta = me.getMeta(); + var yScale = me.getScaleForId(meta.yAxisID); + var sumPos = 0; + var sumNeg = 0; + var i, ds, dsMeta; + + if (yScale.options.stacked) { + for (i = 0; i < datasetIndex; i++) { + ds = chart.data.datasets[i]; + dsMeta = chart.getDatasetMeta(i); + if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) { + var stackedRightValue = Number(yScale.getRightValue(ds.data[index])); + if (stackedRightValue < 0) { + sumNeg += stackedRightValue || 0; + } else { + sumPos += stackedRightValue || 0; + } + } + } + + var rightValue = Number(yScale.getRightValue(value)); + if (rightValue < 0) { + return yScale.getPixelForValue(sumNeg + rightValue); + } + return yScale.getPixelForValue(sumPos + rightValue); + } + + return yScale.getPixelForValue(value); + }, + + updateBezierControlPoints: function() { + var me = this; + var chart = me.chart; + var meta = me.getMeta(); + var lineModel = meta.dataset._model; + var area = chart.chartArea; + var points = meta.data || []; + var i, ilen, model, controlPoints; + + // Only consider points that are drawn in case the spanGaps option is used + if (lineModel.spanGaps) { + points = points.filter(function(pt) { + return !pt._model.skip; + }); + } + + function capControlPoint(pt, min, max) { + return Math.max(Math.min(pt, max), min); + } + + if (lineModel.cubicInterpolationMode === 'monotone') { + helpers$1.splineCurveMonotone(points); + } else { + for (i = 0, ilen = points.length; i < ilen; ++i) { + model = points[i]._model; + controlPoints = helpers$1.splineCurve( + helpers$1.previousItem(points, i)._model, + model, + helpers$1.nextItem(points, i)._model, + lineModel.tension + ); + model.controlPointPreviousX = controlPoints.previous.x; + model.controlPointPreviousY = controlPoints.previous.y; + model.controlPointNextX = controlPoints.next.x; + model.controlPointNextY = controlPoints.next.y; + } + } + + if (chart.options.elements.line.capBezierPoints) { + for (i = 0, ilen = points.length; i < ilen; ++i) { + model = points[i]._model; + if (isPointInArea(model, area)) { + if (i > 0 && isPointInArea(points[i - 1]._model, area)) { + model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right); + model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom); + } + if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) { + model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right); + model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom); + } + } + } + } + }, + + draw: function() { + var me = this; + var chart = me.chart; + var meta = me.getMeta(); + var points = meta.data || []; + var area = chart.chartArea; + var ilen = points.length; + var halfBorderWidth; + var i = 0; + + if (lineEnabled(me.getDataset(), chart.options)) { + halfBorderWidth = (meta.dataset._model.borderWidth || 0) / 2; + + helpers$1.canvas.clipArea(chart.ctx, { + left: area.left, + right: area.right, + top: area.top - halfBorderWidth, + bottom: area.bottom + halfBorderWidth + }); + + meta.dataset.draw(); + + helpers$1.canvas.unclipArea(chart.ctx); + } + + // Draw the points + for (; i < ilen; ++i) { + points[i].draw(area); + } + }, + + /** + * @protected + */ + setHoverStyle: function(point) { + var model = point._model; + var options = point._options; + var getHoverColor = helpers$1.getHoverColor; + + point.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + radius: model.radius + }; + + model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth); + model.radius = valueOrDefault$5(options.hoverRadius, options.radius); + }, +}); + +var resolve$5 = helpers$1.options.resolve; + +core_defaults._set('polarArea', { + scale: { + type: 'radialLinear', + angleLines: { + display: false + }, + gridLines: { + circular: true + }, + pointLabels: { + display: false + }, + ticks: { + beginAtZero: true + } + }, + + // Boolean - Whether to animate the rotation of the chart + animation: { + animateRotate: true, + animateScale: true + }, + + startAngle: -0.5 * Math.PI, + legendCallback: function(chart) { + var text = []; + text.push(''); + return text.join(''); + }, + legend: { + labels: { + generateLabels: function(chart) { + var data = chart.data; + if (data.labels.length && data.datasets.length) { + return data.labels.map(function(label, i) { + var meta = chart.getDatasetMeta(0); + var ds = data.datasets[0]; + var arc = meta.data[i]; + var custom = arc.custom || {}; + var arcOpts = chart.options.elements.arc; + var fill = resolve$5([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i); + var stroke = resolve$5([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i); + var bw = resolve$5([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i); + + return { + text: label, + fillStyle: fill, + strokeStyle: stroke, + lineWidth: bw, + hidden: isNaN(ds.data[i]) || meta.data[i].hidden, + + // Extra data used for toggling the correct item + index: i + }; + }); + } + return []; + } + }, + + onClick: function(e, legendItem) { + var index = legendItem.index; + var chart = this.chart; + var i, ilen, meta; + + for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { + meta = chart.getDatasetMeta(i); + meta.data[index].hidden = !meta.data[index].hidden; + } + + chart.update(); + } + }, + + // Need to override these to give a nice default + tooltips: { + callbacks: { + title: function() { + return ''; + }, + label: function(item, data) { + return data.labels[item.index] + ': ' + item.yLabel; + } + } + } +}); + +var controller_polarArea = core_datasetController.extend({ + + dataElementType: elements.Arc, + + linkScales: helpers$1.noop, + + update: function(reset) { + var me = this; + var dataset = me.getDataset(); + var meta = me.getMeta(); + var start = me.chart.options.startAngle || 0; + var starts = me._starts = []; + var angles = me._angles = []; + var arcs = meta.data; + var i, ilen, angle; + + me._updateRadius(); + + meta.count = me.countVisibleElements(); + + for (i = 0, ilen = dataset.data.length; i < ilen; i++) { + starts[i] = start; + angle = me._computeAngle(i); + angles[i] = angle; + start += angle; + } + + for (i = 0, ilen = arcs.length; i < ilen; ++i) { + arcs[i]._options = me._resolveElementOptions(arcs[i], i); + me.updateElement(arcs[i], i, reset); + } + }, + + /** + * @private + */ + _updateRadius: function() { + var me = this; + var chart = me.chart; + var chartArea = chart.chartArea; + var opts = chart.options; + var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top); + + chart.outerRadius = Math.max(minSize / 2, 0); + chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0); + chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount(); + + me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index); + me.innerRadius = me.outerRadius - chart.radiusLength; + }, + + updateElement: function(arc, index, reset) { + var me = this; + var chart = me.chart; + var dataset = me.getDataset(); + var opts = chart.options; + var animationOpts = opts.animation; + var scale = chart.scale; + var labels = chart.data.labels; + + var centerX = scale.xCenter; + var centerY = scale.yCenter; + + // var negHalfPI = -0.5 * Math.PI; + var datasetStartAngle = opts.startAngle; + var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); + var startAngle = me._starts[index]; + var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]); + + var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]); + var options = arc._options || {}; + + helpers$1.extend(arc, { + // Utility + _datasetIndex: me.index, + _index: index, + _scale: scale, + + // Desired view properties + _model: { + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + borderAlign: options.borderAlign, + x: centerX, + y: centerY, + innerRadius: 0, + outerRadius: reset ? resetRadius : distance, + startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle, + endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle, + label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index]) + } + }); + + arc.pivot(); + }, + + countVisibleElements: function() { + var dataset = this.getDataset(); + var meta = this.getMeta(); + var count = 0; + + helpers$1.each(meta.data, function(element, index) { + if (!isNaN(dataset.data[index]) && !element.hidden) { + count++; + } + }); + + return count; + }, + + /** + * @protected + */ + setHoverStyle: function(arc) { + var model = arc._model; + var options = arc._options; + var getHoverColor = helpers$1.getHoverColor; + var valueOrDefault = helpers$1.valueOrDefault; + + arc.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + }; + + model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth); + }, + + /** + * @private + */ + _resolveElementOptions: function(arc, index) { + var me = this; + var chart = me.chart; + var dataset = me.getDataset(); + var custom = arc.custom || {}; + var options = chart.options.elements.arc; + var values = {}; + var i, ilen, key; + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + var keys = [ + 'backgroundColor', + 'borderColor', + 'borderWidth', + 'borderAlign', + 'hoverBackgroundColor', + 'hoverBorderColor', + 'hoverBorderWidth', + ]; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$5([ + custom[key], + dataset[key], + options[key] + ], context, index); + } + + return values; + }, + + /** + * @private + */ + _computeAngle: function(index) { + var me = this; + var count = this.getMeta().count; + var dataset = me.getDataset(); + var meta = me.getMeta(); + + if (isNaN(dataset.data[index]) || meta.data[index].hidden) { + return 0; + } + + // Scriptable options + var context = { + chart: me.chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + return resolve$5([ + me.chart.options.elements.arc.angle, + (2 * Math.PI) / count + ], context, index); + } +}); + +core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut)); +core_defaults._set('pie', { + cutoutPercentage: 0 +}); + +// Pie charts are Doughnut chart with different defaults +var controller_pie = controller_doughnut; + +var valueOrDefault$6 = helpers$1.valueOrDefault; +var resolve$6 = helpers$1.options.resolve; + +core_defaults._set('radar', { + scale: { + type: 'radialLinear' + }, + elements: { + line: { + tension: 0 // no bezier in radar + } + } +}); + +var controller_radar = core_datasetController.extend({ + + datasetElementType: elements.Line, + + dataElementType: elements.Point, + + linkScales: helpers$1.noop, + + update: function(reset) { + var me = this; + var meta = me.getMeta(); + var line = meta.dataset; + var points = meta.data || []; + var scale = me.chart.scale; + var dataset = me.getDataset(); + var i, ilen; + + // Compatibility: If the properties are defined with only the old name, use those values + if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) { + dataset.lineTension = dataset.tension; + } + + // Utility + line._scale = scale; + line._datasetIndex = me.index; + // Data + line._children = points; + line._loop = true; + // Model + line._model = me._resolveLineOptions(line); + + line.pivot(); + + // Update Points + for (i = 0, ilen = points.length; i < ilen; ++i) { + me.updateElement(points[i], i, reset); + } + + // Update bezier control points + me.updateBezierControlPoints(); + + // Now pivot the point for animation + for (i = 0, ilen = points.length; i < ilen; ++i) { + points[i].pivot(); + } + }, + + updateElement: function(point, index, reset) { + var me = this; + var custom = point.custom || {}; + var dataset = me.getDataset(); + var scale = me.chart.scale; + var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]); + var options = me._resolvePointOptions(point, index); + var lineModel = me.getMeta().dataset._model; + var x = reset ? scale.xCenter : pointPosition.x; + var y = reset ? scale.yCenter : pointPosition.y; + + // Utility + point._scale = scale; + point._options = options; + point._datasetIndex = me.index; + point._index = index; + + // Desired view properties + point._model = { + x: x, // value not used in dataset scale, but we want a consistent API between scales + y: y, + skip: custom.skip || isNaN(x) || isNaN(y), + // Appearance + radius: options.radius, + pointStyle: options.pointStyle, + rotation: options.rotation, + backgroundColor: options.backgroundColor, + borderColor: options.borderColor, + borderWidth: options.borderWidth, + tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0), + + // Tooltip + hitRadius: options.hitRadius + }; + }, + + /** + * @private + */ + _resolvePointOptions: function(element, index) { + var me = this; + var chart = me.chart; + var dataset = chart.data.datasets[me.index]; + var custom = element.custom || {}; + var options = chart.options.elements.point; + var values = {}; + var i, ilen, key; + + // Scriptable options + var context = { + chart: chart, + dataIndex: index, + dataset: dataset, + datasetIndex: me.index + }; + + var ELEMENT_OPTIONS = { + backgroundColor: 'pointBackgroundColor', + borderColor: 'pointBorderColor', + borderWidth: 'pointBorderWidth', + hitRadius: 'pointHitRadius', + hoverBackgroundColor: 'pointHoverBackgroundColor', + hoverBorderColor: 'pointHoverBorderColor', + hoverBorderWidth: 'pointHoverBorderWidth', + hoverRadius: 'pointHoverRadius', + pointStyle: 'pointStyle', + radius: 'pointRadius', + rotation: 'pointRotation' + }; + var keys = Object.keys(ELEMENT_OPTIONS); + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$6([ + custom[key], + dataset[ELEMENT_OPTIONS[key]], + dataset[key], + options[key] + ], context, index); + } + + return values; + }, + + /** + * @private + */ + _resolveLineOptions: function(element) { + var me = this; + var chart = me.chart; + var dataset = chart.data.datasets[me.index]; + var custom = element.custom || {}; + var options = chart.options.elements.line; + var values = {}; + var i, ilen, key; + + var keys = [ + 'backgroundColor', + 'borderWidth', + 'borderColor', + 'borderCapStyle', + 'borderDash', + 'borderDashOffset', + 'borderJoinStyle', + 'fill' + ]; + + for (i = 0, ilen = keys.length; i < ilen; ++i) { + key = keys[i]; + values[key] = resolve$6([ + custom[key], + dataset[key], + options[key] + ]); + } + + values.tension = valueOrDefault$6(dataset.lineTension, options.tension); + + return values; + }, + + updateBezierControlPoints: function() { + var me = this; + var meta = me.getMeta(); + var area = me.chart.chartArea; + var points = meta.data || []; + var i, ilen, model, controlPoints; + + function capControlPoint(pt, min, max) { + return Math.max(Math.min(pt, max), min); + } + + for (i = 0, ilen = points.length; i < ilen; ++i) { + model = points[i]._model; + controlPoints = helpers$1.splineCurve( + helpers$1.previousItem(points, i, true)._model, + model, + helpers$1.nextItem(points, i, true)._model, + model.tension + ); + + // Prevent the bezier going outside of the bounds of the graph + model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right); + model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom); + model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right); + model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom); + } + }, + + setHoverStyle: function(point) { + var model = point._model; + var options = point._options; + var getHoverColor = helpers$1.getHoverColor; + + point.$previousStyle = { + backgroundColor: model.backgroundColor, + borderColor: model.borderColor, + borderWidth: model.borderWidth, + radius: model.radius + }; + + model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor)); + model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor)); + model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth); + model.radius = valueOrDefault$6(options.hoverRadius, options.radius); + } +}); + +core_defaults._set('scatter', { + hover: { + mode: 'single' + }, + + scales: { + xAxes: [{ + id: 'x-axis-1', // need an ID so datasets can reference the scale + type: 'linear', // scatter should not use a category axis + position: 'bottom' + }], + yAxes: [{ + id: 'y-axis-1', + type: 'linear', + position: 'left' + }] + }, + + showLines: false, + + tooltips: { + callbacks: { + title: function() { + return ''; // doesn't make sense for scatter since data are formatted as a point + }, + label: function(item) { + return '(' + item.xLabel + ', ' + item.yLabel + ')'; + } + } + } +}); + +// Scatter charts use line controllers +var controller_scatter = controller_line; + +// NOTE export a map in which the key represents the controller type, not +// the class, and so must be CamelCase in order to be correctly retrieved +// by the controller in core.controller.js (`controllers[meta.type]`). + +var controllers = { + bar: controller_bar, + bubble: controller_bubble, + doughnut: controller_doughnut, + horizontalBar: controller_horizontalBar, + line: controller_line, + polarArea: controller_polarArea, + pie: controller_pie, + radar: controller_radar, + scatter: controller_scatter +}; + +/** + * Helper function to get relative position for an event + * @param {Event|IEvent} event - The event to get the position for + * @param {Chart} chart - The chart + * @returns {object} the event position + */ +function getRelativePosition(e, chart) { + if (e.native) { + return { + x: e.x, + y: e.y + }; + } + + return helpers$1.getRelativePosition(e, chart); +} + +/** + * Helper function to traverse all of the visible elements in the chart + * @param {Chart} chart - the chart + * @param {function} handler - the callback to execute for each visible item + */ +function parseVisibleItems(chart, handler) { + var datasets = chart.data.datasets; + var meta, i, j, ilen, jlen; + + for (i = 0, ilen = datasets.length; i < ilen; ++i) { + if (!chart.isDatasetVisible(i)) { + continue; + } + + meta = chart.getDatasetMeta(i); + for (j = 0, jlen = meta.data.length; j < jlen; ++j) { + var element = meta.data[j]; + if (!element._view.skip) { + handler(element); + } + } + } +} + +/** + * Helper function to get the items that intersect the event position + * @param {ChartElement[]} items - elements to filter + * @param {object} position - the point to be nearest to + * @return {ChartElement[]} the nearest items + */ +function getIntersectItems(chart, position) { + var elements = []; + + parseVisibleItems(chart, function(element) { + if (element.inRange(position.x, position.y)) { + elements.push(element); + } + }); + + return elements; +} + +/** + * Helper function to get the items nearest to the event position considering all visible items in teh chart + * @param {Chart} chart - the chart to look at elements from + * @param {object} position - the point to be nearest to + * @param {boolean} intersect - if true, only consider items that intersect the position + * @param {function} distanceMetric - function to provide the distance between points + * @return {ChartElement[]} the nearest items + */ +function getNearestItems(chart, position, intersect, distanceMetric) { + var minDistance = Number.POSITIVE_INFINITY; + var nearestItems = []; + + parseVisibleItems(chart, function(element) { + if (intersect && !element.inRange(position.x, position.y)) { + return; + } + + var center = element.getCenterPoint(); + var distance = distanceMetric(position, center); + if (distance < minDistance) { + nearestItems = [element]; + minDistance = distance; + } else if (distance === minDistance) { + // Can have multiple items at the same distance in which case we sort by size + nearestItems.push(element); + } + }); + + return nearestItems; +} + +/** + * Get a distance metric function for two points based on the + * axis mode setting + * @param {string} axis - the axis mode. x|y|xy + */ +function getDistanceMetricForAxis(axis) { + var useX = axis.indexOf('x') !== -1; + var useY = axis.indexOf('y') !== -1; + + return function(pt1, pt2) { + var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0; + var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0; + return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2)); + }; +} + +function indexMode(chart, e, options) { + var position = getRelativePosition(e, chart); + // Default axis for index mode is 'x' to match old behaviour + options.axis = options.axis || 'x'; + var distanceMetric = getDistanceMetricForAxis(options.axis); + var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); + var elements = []; + + if (!items.length) { + return []; + } + + chart.data.datasets.forEach(function(dataset, datasetIndex) { + if (chart.isDatasetVisible(datasetIndex)) { + var meta = chart.getDatasetMeta(datasetIndex); + var element = meta.data[items[0]._index]; + + // don't count items that are skipped (null data) + if (element && !element._view.skip) { + elements.push(element); + } + } + }); + + return elements; +} + +/** + * @interface IInteractionOptions + */ +/** + * If true, only consider items that intersect the point + * @name IInterfaceOptions#boolean + * @type Boolean + */ + +/** + * Contains interaction related functions + * @namespace Chart.Interaction + */ +var core_interaction = { + // Helper function for different modes + modes: { + single: function(chart, e) { + var position = getRelativePosition(e, chart); + var elements = []; + + parseVisibleItems(chart, function(element) { + if (element.inRange(position.x, position.y)) { + elements.push(element); + return elements; + } + }); + + return elements.slice(0, 1); + }, + + /** + * @function Chart.Interaction.modes.label + * @deprecated since version 2.4.0 + * @todo remove at version 3 + * @private + */ + label: indexMode, + + /** + * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something + * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item + * @function Chart.Interaction.modes.index + * @since v2.4.0 + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use during interaction + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + index: indexMode, + + /** + * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something + * If the options.intersect is false, we find the nearest item and return the items in that dataset + * @function Chart.Interaction.modes.dataset + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use during interaction + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + dataset: function(chart, e, options) { + var position = getRelativePosition(e, chart); + options.axis = options.axis || 'xy'; + var distanceMetric = getDistanceMetricForAxis(options.axis); + var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric); + + if (items.length > 0) { + items = chart.getDatasetMeta(items[0]._datasetIndex).data; + } + + return items; + }, + + /** + * @function Chart.Interaction.modes.x-axis + * @deprecated since version 2.4.0. Use index mode and intersect == true + * @todo remove at version 3 + * @private + */ + 'x-axis': function(chart, e) { + return indexMode(chart, e, {intersect: false}); + }, + + /** + * Point mode returns all elements that hit test based on the event position + * of the event + * @function Chart.Interaction.modes.intersect + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + point: function(chart, e) { + var position = getRelativePosition(e, chart); + return getIntersectItems(chart, position); + }, + + /** + * nearest mode returns the element closest to the point + * @function Chart.Interaction.modes.intersect + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + nearest: function(chart, e, options) { + var position = getRelativePosition(e, chart); + options.axis = options.axis || 'xy'; + var distanceMetric = getDistanceMetricForAxis(options.axis); + return getNearestItems(chart, position, options.intersect, distanceMetric); + }, + + /** + * x mode returns the elements that hit-test at the current x coordinate + * @function Chart.Interaction.modes.x + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + x: function(chart, e, options) { + var position = getRelativePosition(e, chart); + var items = []; + var intersectsItem = false; + + parseVisibleItems(chart, function(element) { + if (element.inXRange(position.x)) { + items.push(element); + } + + if (element.inRange(position.x, position.y)) { + intersectsItem = true; + } + }); + + // If we want to trigger on an intersect and we don't have any items + // that intersect the position, return nothing + if (options.intersect && !intersectsItem) { + items = []; + } + return items; + }, + + /** + * y mode returns the elements that hit-test at the current y coordinate + * @function Chart.Interaction.modes.y + * @param {Chart} chart - the chart we are returning items from + * @param {Event} e - the event we are find things at + * @param {IInteractionOptions} options - options to use + * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned + */ + y: function(chart, e, options) { + var position = getRelativePosition(e, chart); + var items = []; + var intersectsItem = false; + + parseVisibleItems(chart, function(element) { + if (element.inYRange(position.y)) { + items.push(element); + } + + if (element.inRange(position.x, position.y)) { + intersectsItem = true; + } + }); + + // If we want to trigger on an intersect and we don't have any items + // that intersect the position, return nothing + if (options.intersect && !intersectsItem) { + items = []; + } + return items; + } + } +}; + +function filterByPosition(array, position) { + return helpers$1.where(array, function(v) { + return v.position === position; + }); +} + +function sortByWeight(array, reverse) { + array.forEach(function(v, i) { + v._tmpIndex_ = i; + return v; + }); + array.sort(function(a, b) { + var v0 = reverse ? b : a; + var v1 = reverse ? a : b; + return v0.weight === v1.weight ? + v0._tmpIndex_ - v1._tmpIndex_ : + v0.weight - v1.weight; + }); + array.forEach(function(v) { + delete v._tmpIndex_; + }); +} + +function findMaxPadding(boxes) { + var top = 0; + var left = 0; + var bottom = 0; + var right = 0; + helpers$1.each(boxes, function(box) { + if (box.getPadding) { + var boxPadding = box.getPadding(); + top = Math.max(top, boxPadding.top); + left = Math.max(left, boxPadding.left); + bottom = Math.max(bottom, boxPadding.bottom); + right = Math.max(right, boxPadding.right); + } + }); + return { + top: top, + left: left, + bottom: bottom, + right: right + }; +} + +function addSizeByPosition(boxes, size) { + helpers$1.each(boxes, function(box) { + size[box.position] += box.isHorizontal() ? box.height : box.width; + }); +} + +core_defaults._set('global', { + layout: { + padding: { + top: 0, + right: 0, + bottom: 0, + left: 0 + } + } +}); + +/** + * @interface ILayoutItem + * @prop {string} position - The position of the item in the chart layout. Possible values are + * 'left', 'top', 'right', 'bottom', and 'chartArea' + * @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area + * @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down + * @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom) + * @prop {function} update - Takes two parameters: width and height. Returns size of item + * @prop {function} getPadding - Returns an object with padding on the edges + * @prop {number} width - Width of item. Must be valid after update() + * @prop {number} height - Height of item. Must be valid after update() + * @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update + * @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update + * @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update + * @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update + */ + +// The layout service is very self explanatory. It's responsible for the layout within a chart. +// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need +// It is this service's responsibility of carrying out that layout. +var core_layouts = { + defaults: {}, + + /** + * Register a box to a chart. + * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title. + * @param {Chart} chart - the chart to use + * @param {ILayoutItem} item - the item to add to be layed out + */ + addBox: function(chart, item) { + if (!chart.boxes) { + chart.boxes = []; + } + + // initialize item with default values + item.fullWidth = item.fullWidth || false; + item.position = item.position || 'top'; + item.weight = item.weight || 0; + + chart.boxes.push(item); + }, + + /** + * Remove a layoutItem from a chart + * @param {Chart} chart - the chart to remove the box from + * @param {ILayoutItem} layoutItem - the item to remove from the layout + */ + removeBox: function(chart, layoutItem) { + var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1; + if (index !== -1) { + chart.boxes.splice(index, 1); + } + }, + + /** + * Sets (or updates) options on the given `item`. + * @param {Chart} chart - the chart in which the item lives (or will be added to) + * @param {ILayoutItem} item - the item to configure with the given options + * @param {object} options - the new item options. + */ + configure: function(chart, item, options) { + var props = ['fullWidth', 'position', 'weight']; + var ilen = props.length; + var i = 0; + var prop; + + for (; i < ilen; ++i) { + prop = props[i]; + if (options.hasOwnProperty(prop)) { + item[prop] = options[prop]; + } + } + }, + + /** + * Fits boxes of the given chart into the given size by having each box measure itself + * then running a fitting algorithm + * @param {Chart} chart - the chart + * @param {number} width - the width to fit into + * @param {number} height - the height to fit into + */ + update: function(chart, width, height) { + if (!chart) { + return; + } + + var layoutOptions = chart.options.layout || {}; + var padding = helpers$1.options.toPadding(layoutOptions.padding); + var leftPadding = padding.left; + var rightPadding = padding.right; + var topPadding = padding.top; + var bottomPadding = padding.bottom; + + var leftBoxes = filterByPosition(chart.boxes, 'left'); + var rightBoxes = filterByPosition(chart.boxes, 'right'); + var topBoxes = filterByPosition(chart.boxes, 'top'); + var bottomBoxes = filterByPosition(chart.boxes, 'bottom'); + var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea'); + + // Sort boxes by weight. A higher weight is further away from the chart area + sortByWeight(leftBoxes, true); + sortByWeight(rightBoxes, false); + sortByWeight(topBoxes, true); + sortByWeight(bottomBoxes, false); + + var verticalBoxes = leftBoxes.concat(rightBoxes); + var horizontalBoxes = topBoxes.concat(bottomBoxes); + var outerBoxes = verticalBoxes.concat(horizontalBoxes); + + // Essentially we now have any number of boxes on each of the 4 sides. + // Our canvas looks like the following. + // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and + // B1 is the bottom axis + // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays + // These locations are single-box locations only, when trying to register a chartArea location that is already taken, + // an error will be thrown. + // + // |----------------------------------------------------| + // | T1 (Full Width) | + // |----------------------------------------------------| + // | | | T2 | | + // | |----|-------------------------------------|----| + // | | | C1 | | C2 | | + // | | |----| |----| | + // | | | | | + // | L1 | L2 | ChartArea (C0) | R1 | + // | | | | | + // | | |----| |----| | + // | | | C3 | | C4 | | + // | |----|-------------------------------------|----| + // | | | B1 | | + // |----------------------------------------------------| + // | B2 (Full Width) | + // |----------------------------------------------------| + // + // What we do to find the best sizing, we do the following + // 1. Determine the minimum size of the chart area. + // 2. Split the remaining width equally between each vertical axis + // 3. Split the remaining height equally between each horizontal axis + // 4. Give each layout the maximum size it can be. The layout will return it's minimum size + // 5. Adjust the sizes of each axis based on it's minimum reported size. + // 6. Refit each axis + // 7. Position each axis in the final location + // 8. Tell the chart the final location of the chart area + // 9. Tell any axes that overlay the chart area the positions of the chart area + + // Step 1 + var chartWidth = width - leftPadding - rightPadding; + var chartHeight = height - topPadding - bottomPadding; + var chartAreaWidth = chartWidth / 2; // min 50% + + // Step 2 + var verticalBoxWidth = (width - chartAreaWidth) / verticalBoxes.length; + + // Step 3 + // TODO re-limit horizontal axis height (this limit has affected only padding calculation since PR 1837) + // var horizontalBoxHeight = (height - chartAreaHeight) / horizontalBoxes.length; + + // Step 4 + var maxChartAreaWidth = chartWidth; + var maxChartAreaHeight = chartHeight; + var outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding}; + var minBoxSizes = []; + var maxPadding; + + function getMinimumBoxSize(box) { + var minSize; + var isHorizontal = box.isHorizontal(); + + if (isHorizontal) { + minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2); + maxChartAreaHeight -= minSize.height; + } else { + minSize = box.update(verticalBoxWidth, maxChartAreaHeight); + maxChartAreaWidth -= minSize.width; + } + + minBoxSizes.push({ + horizontal: isHorizontal, + width: minSize.width, + box: box, + }); + } + + helpers$1.each(outerBoxes, getMinimumBoxSize); + + // If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478) + maxPadding = findMaxPadding(outerBoxes); + + // At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could + // be if the axes are drawn at their minimum sizes. + // Steps 5 & 6 + + // Function to fit a box + function fitBox(box) { + var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minBox) { + return minBox.box === box; + }); + + if (minBoxSize) { + if (minBoxSize.horizontal) { + var scaleMargin = { + left: Math.max(outerBoxSizes.left, maxPadding.left), + right: Math.max(outerBoxSizes.right, maxPadding.right), + top: 0, + bottom: 0 + }; + + // Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends + // on the margin. Sometimes they need to increase in size slightly + box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin); + } else { + box.update(minBoxSize.width, maxChartAreaHeight); + } + } + } + + // Update, and calculate the left and right margins for the horizontal boxes + helpers$1.each(verticalBoxes, fitBox); + addSizeByPosition(verticalBoxes, outerBoxSizes); + + // Set the Left and Right margins for the horizontal boxes + helpers$1.each(horizontalBoxes, fitBox); + addSizeByPosition(horizontalBoxes, outerBoxSizes); + + function finalFitVerticalBox(box) { + var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minSize) { + return minSize.box === box; + }); + + var scaleMargin = { + left: 0, + right: 0, + top: outerBoxSizes.top, + bottom: outerBoxSizes.bottom + }; + + if (minBoxSize) { + box.update(minBoxSize.width, maxChartAreaHeight, scaleMargin); + } + } + + // Let the left layout know the final margin + helpers$1.each(verticalBoxes, finalFitVerticalBox); + + // Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance) + outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding}; + addSizeByPosition(outerBoxes, outerBoxSizes); + + // We may be adding some padding to account for rotated x axis labels + var leftPaddingAddition = Math.max(maxPadding.left - outerBoxSizes.left, 0); + outerBoxSizes.left += leftPaddingAddition; + outerBoxSizes.right += Math.max(maxPadding.right - outerBoxSizes.right, 0); + + var topPaddingAddition = Math.max(maxPadding.top - outerBoxSizes.top, 0); + outerBoxSizes.top += topPaddingAddition; + outerBoxSizes.bottom += Math.max(maxPadding.bottom - outerBoxSizes.bottom, 0); + + // Figure out if our chart area changed. This would occur if the dataset layout label rotation + // changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do + // without calling `fit` again + var newMaxChartAreaHeight = height - outerBoxSizes.top - outerBoxSizes.bottom; + var newMaxChartAreaWidth = width - outerBoxSizes.left - outerBoxSizes.right; + + if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) { + helpers$1.each(verticalBoxes, function(box) { + box.height = newMaxChartAreaHeight; + }); + + helpers$1.each(horizontalBoxes, function(box) { + if (!box.fullWidth) { + box.width = newMaxChartAreaWidth; + } + }); + + maxChartAreaHeight = newMaxChartAreaHeight; + maxChartAreaWidth = newMaxChartAreaWidth; + } + + // Step 7 - Position the boxes + var left = leftPadding + leftPaddingAddition; + var top = topPadding + topPaddingAddition; + + function placeBox(box) { + if (box.isHorizontal()) { + box.left = box.fullWidth ? leftPadding : outerBoxSizes.left; + box.right = box.fullWidth ? width - rightPadding : outerBoxSizes.left + maxChartAreaWidth; + box.top = top; + box.bottom = top + box.height; + + // Move to next point + top = box.bottom; + + } else { + + box.left = left; + box.right = left + box.width; + box.top = outerBoxSizes.top; + box.bottom = outerBoxSizes.top + maxChartAreaHeight; + + // Move to next point + left = box.right; + } + } + + helpers$1.each(leftBoxes.concat(topBoxes), placeBox); + + // Account for chart width and height + left += maxChartAreaWidth; + top += maxChartAreaHeight; + + helpers$1.each(rightBoxes, placeBox); + helpers$1.each(bottomBoxes, placeBox); + + // Step 8 + chart.chartArea = { + left: outerBoxSizes.left, + top: outerBoxSizes.top, + right: outerBoxSizes.left + maxChartAreaWidth, + bottom: outerBoxSizes.top + maxChartAreaHeight + }; + + // Step 9 + helpers$1.each(chartAreaBoxes, function(box) { + box.left = chart.chartArea.left; + box.top = chart.chartArea.top; + box.right = chart.chartArea.right; + box.bottom = chart.chartArea.bottom; + + box.update(maxChartAreaWidth, maxChartAreaHeight); + }); + } +}; -},{"42":42,"43":43,"44":44,"45":45}],47:[function(require,module,exports){ /** * Platform fallback implementation (minimal). * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939 */ -module.exports = { +var platform_basic = { acquireContext: function(item) { if (item && item.canvas) { // Support for any object associated to a canvas (including a context2d) @@ -10557,17 +6545,21 @@ module.exports = { } }; -},{}],48:[function(require,module,exports){ -/** - * Chart.Platform implementation for targeting a web browser - */ +var platform_dom = "/*\n * DOM element rendering detection\n * https://davidwalsh.name/detect-node-insertion\n */\n@keyframes chartjs-render-animation {\n\tfrom { opacity: 0.99; }\n\tto { opacity: 1; }\n}\n\n.chartjs-render-monitor {\n\tanimation: chartjs-render-animation 0.001s;\n}\n\n/*\n * DOM element resizing detection\n * https://github.com/marcj/css-element-queries\n */\n.chartjs-size-monitor,\n.chartjs-size-monitor-expand,\n.chartjs-size-monitor-shrink {\n\tposition: absolute;\n\tdirection: ltr;\n\tleft: 0;\n\ttop: 0;\n\tright: 0;\n\tbottom: 0;\n\toverflow: hidden;\n\tpointer-events: none;\n\tvisibility: hidden;\n\tz-index: -1;\n}\n\n.chartjs-size-monitor-expand > div {\n\tposition: absolute;\n\twidth: 1000000px;\n\theight: 1000000px;\n\tleft: 0;\n\ttop: 0;\n}\n\n.chartjs-size-monitor-shrink > div {\n\tposition: absolute;\n\twidth: 200%;\n\theight: 200%;\n\tleft: 0;\n\ttop: 0;\n}\n"; -'use strict'; +var platform_dom$1 = /*#__PURE__*/Object.freeze({ +default: platform_dom +}); -var helpers = require(46); +function getCjsExportFromNamespace (n) { + return n && n.default || n; +} + +var stylesheet = getCjsExportFromNamespace(platform_dom$1); var EXPANDO_KEY = '$chartjs'; var CSS_PREFIX = 'chartjs-'; +var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor'; var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor'; var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation'; var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart']; @@ -10596,10 +6588,10 @@ var EVENT_TYPES = { * `element` has a size relative to its parent and this last one is not yet displayed, * for example because of `display: none` on a parent node. * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value - * @returns {Number} Size in pixels or undefined if unknown. + * @returns {number} Size in pixels or undefined if unknown. */ function readUsedSize(element, property) { - var value = helpers.getStyle(element, property); + var value = helpers$1.getStyle(element, property); var matches = value && value.match(/^(\d+)(\.\d+)?px$/); return matches ? Number(matches[1]) : undefined; } @@ -10668,6 +6660,7 @@ var supportsEventListenerOptions = (function() { var supports = false; try { var options = Object.defineProperty({}, 'passive', { + // eslint-disable-next-line getter-return get: function() { supports = true; } @@ -10683,11 +6676,11 @@ var supportsEventListenerOptions = (function() { // https://github.com/chartjs/Chart.js/issues/4287 var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false; -function addEventListener(node, type, listener) { +function addListener(node, type, listener) { node.addEventListener(type, listener, eventListenerOptions); } -function removeEventListener(node, type, listener) { +function removeListener(node, type, listener) { node.removeEventListener(type, listener, eventListenerOptions); } @@ -10703,7 +6696,7 @@ function createEvent(type, chart, x, y, nativeEvent) { function fromNativeEvent(event, chart) { var type = EVENT_TYPES[event.type] || event.type; - var pos = helpers.getRelativePosition(event, chart); + var pos = helpers$1.getRelativePosition(event, chart); return createEvent(type, chart, pos.x, pos.y, event); } @@ -10717,7 +6710,7 @@ function throttled(fn, thisArg) { if (!ticking) { ticking = true; - helpers.requestAnimFrame.call(window, function() { + helpers$1.requestAnimFrame.call(window, function() { ticking = false; fn.apply(thisArg, args); }); @@ -10725,60 +6718,41 @@ function throttled(fn, thisArg) { }; } +function createDiv(cls) { + var el = document.createElement('div'); + el.className = cls || ''; + return el; +} + // Implementation based on https://github.com/marcj/css-element-queries function createResizer(handler) { - var resizer = document.createElement('div'); - var cls = CSS_PREFIX + 'size-monitor'; var maxSize = 1000000; - var style = - 'position:absolute;' + - 'left:0;' + - 'top:0;' + - 'right:0;' + - 'bottom:0;' + - 'overflow:hidden;' + - 'pointer-events:none;' + - 'visibility:hidden;' + - 'z-index:-1;'; - resizer.style.cssText = style; - resizer.className = cls; - resizer.innerHTML = - '
' + - '
' + - '
' + - '
' + - '
' + - '
' + - '
' + - '
'; + // NOTE(SB) Don't use innerHTML because it could be considered unsafe. + // https://github.com/chartjs/Chart.js/issues/5902 + var resizer = createDiv(CSS_SIZE_MONITOR); + var expand = createDiv(CSS_SIZE_MONITOR + '-expand'); + var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink'); - var expand = resizer.childNodes[0]; - var shrink = resizer.childNodes[1]; + expand.appendChild(createDiv()); + shrink.appendChild(createDiv()); + resizer.appendChild(expand); + resizer.appendChild(shrink); resizer._reset = function() { expand.scrollLeft = maxSize; expand.scrollTop = maxSize; shrink.scrollLeft = maxSize; shrink.scrollTop = maxSize; }; + var onScroll = function() { resizer._reset(); handler(); }; - addEventListener(expand, 'scroll', onScroll.bind(expand, 'expand')); - addEventListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink')); + addListener(expand, 'scroll', onScroll.bind(expand, 'expand')); + addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink')); return resizer; } @@ -10792,8 +6766,8 @@ function watchForRender(node, handler) { } }; - helpers.each(ANIMATION_START_EVENTS, function(type) { - addEventListener(node, type, proxy); + helpers$1.each(ANIMATION_START_EVENTS, function(type) { + addListener(node, type, proxy); }); // #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class @@ -10811,8 +6785,8 @@ function unwatchForRender(node) { var proxy = expando.renderProxy; if (proxy) { - helpers.each(ANIMATION_START_EVENTS, function(type) { - removeEventListener(node, type, proxy); + helpers$1.each(ANIMATION_START_EVENTS, function(type) { + removeListener(node, type, proxy); }); delete expando.renderProxy; @@ -10827,7 +6801,19 @@ function addResizeListener(node, listener, chart) { // Let's keep track of this added resizer and thus avoid DOM query when removing it. var resizer = expando.resizer = createResizer(throttled(function() { if (expando.resizer) { - return listener(createEvent('resize', chart)); + var container = chart.options.maintainAspectRatio && node.parentNode; + var w = container ? container.clientWidth : 0; + listener(createEvent('resize', chart)); + if (container && container.clientWidth < w && chart.canvas) { + // If the container size shrank during chart resize, let's assume + // scrollbar appeared. So we resize again with the scrollbar visible - + // effectively making chart smaller and the scrollbar hidden again. + // Because we are inside `throttled`, and currently `ticking`, scroll + // events are ignored during this whole 2 resize process. + // If we assumed wrong and something else happened, we are resizing + // twice in a frame (potential performance issue) + listener(createEvent('resize', chart)); + } } })); @@ -10859,7 +6845,7 @@ function removeResizeListener(node) { } function injectCSS(platform, css) { - // http://stackoverflow.com/q/3922139 + // https://stackoverflow.com/q/3922139 var style = platform._style || document.createElement('style'); if (!platform._style) { platform._style = style; @@ -10871,7 +6857,16 @@ function injectCSS(platform, css) { style.appendChild(document.createTextNode(css)); } -module.exports = { +var platform_dom$2 = { + /** + * When `true`, prevents the automatic injection of the stylesheet required to + * correctly detect when the chart is added to the DOM and then resized. This + * switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`) + * to be manually imported to make this library compatible with any CSP. + * See https://github.com/chartjs/Chart.js/issues/5208 + */ + disableCSSInjection: false, + /** * This property holds whether this platform is enabled for the current environment. * Currently used by platform.js to select the proper implementation. @@ -10879,19 +6874,20 @@ module.exports = { */ _enabled: typeof window !== 'undefined' && typeof document !== 'undefined', - initialize: function() { - var keyframes = 'from{opacity:0.99}to{opacity:1}'; + /** + * @private + */ + _ensureLoaded: function() { + if (this._loaded) { + return; + } - injectCSS(this, - // DOM rendering detection - // https://davidwalsh.name/detect-node-insertion - '@-webkit-keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' + - '@keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' + - '.' + CSS_RENDER_MONITOR + '{' + - '-webkit-animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' + - 'animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' + - '}' - ); + this._loaded = true; + + // https://github.com/chartjs/Chart.js/issues/5208 + if (!this.disableCSSInjection) { + injectCSS(this, stylesheet); + } }, acquireContext: function(item, config) { @@ -10912,6 +6908,10 @@ module.exports = { // https://github.com/chartjs/Chart.js/issues/2807 var context = item && item.getContext && item.getContext('2d'); + // Load platform resources on first chart creation, to make possible to change + // platform options after importing the library (e.g. `disableCSSInjection`). + this._ensureLoaded(); + // `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is // inside an iframe or when running in a protected environment. We could guess the // types from their toString() value but let's keep things flexible and assume it's @@ -10936,14 +6936,14 @@ module.exports = { var initial = canvas[EXPANDO_KEY].initial; ['height', 'width'].forEach(function(prop) { var value = initial[prop]; - if (helpers.isNullOrUndef(value)) { + if (helpers$1.isNullOrUndef(value)) { canvas.removeAttribute(prop); } else { canvas.setAttribute(prop, value); } }); - helpers.each(initial.style || {}, function(value, key) { + helpers$1.each(initial.style || {}, function(value, key) { canvas.style[key] = value; }); @@ -10951,6 +6951,7 @@ module.exports = { // we can't use save() and restore() to restore the initial state. So make sure that at // least the canvas context is reset to the default state by setting the canvas width. // https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html + // eslint-disable-next-line no-self-assign canvas.width = canvas.width; delete canvas[EXPANDO_KEY]; @@ -10970,14 +6971,14 @@ module.exports = { listener(fromNativeEvent(event, chart)); }; - addEventListener(canvas, type, proxy); + addListener(canvas, type, proxy); }, removeEventListener: function(chart, type, listener) { var canvas = chart.canvas; if (type === 'resize') { // Note: the resize event is not supported on all browsers. - removeResizeListener(canvas, listener); + removeResizeListener(canvas); return; } @@ -10988,7 +6989,7 @@ module.exports = { return; } - removeEventListener(canvas, type, proxy); + removeListener(canvas, type, proxy); } }; @@ -11003,7 +7004,7 @@ module.exports = { * @todo remove at version 3 * @private */ -helpers.addEvent = addEventListener; +helpers$1.addEvent = addListener; /** * Provided for backward compatibility, use EventTarget.removeEventListener instead. @@ -11014,24 +7015,17 @@ helpers.addEvent = addEventListener; * @todo remove at version 3 * @private */ -helpers.removeEvent = removeEventListener; - -},{"46":46}],49:[function(require,module,exports){ -'use strict'; - -var helpers = require(46); -var basic = require(47); -var dom = require(48); +helpers$1.removeEvent = removeListener; // @TODO Make possible to select another platform at build time. -var implementation = dom._enabled ? dom : basic; +var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic; /** * @namespace Chart.platform * @see https://chartjs.gitbooks.io/proposals/content/Platform.html * @since 2.4.0 */ -module.exports = helpers.extend({ +var platform = helpers$1.extend({ /** * @since 2.7.0 */ @@ -11041,7 +7035,7 @@ module.exports = helpers.extend({ * Called at chart construction time, returns a context2d instance implementing * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}. * @param {*} item - The native item from which to acquire context (platform specific) - * @param {Object} options - The chart options + * @param {object} options - The chart options * @returns {CanvasRenderingContext2D} context2d instance */ acquireContext: function() {}, @@ -11050,70 +7044,6346 @@ module.exports = helpers.extend({ * Called at chart destruction time, releases any resources associated to the context * previously returned by the acquireContext() method. * @param {CanvasRenderingContext2D} context - The context2d instance - * @returns {Boolean} true if the method succeeded, else false + * @returns {boolean} true if the method succeeded, else false */ releaseContext: function() {}, /** * Registers the specified listener on the given chart. * @param {Chart} chart - Chart from which to listen for event - * @param {String} type - The ({@link IEvent}) type to listen for - * @param {Function} listener - Receives a notification (an object that implements + * @param {string} type - The ({@link IEvent}) type to listen for + * @param {function} listener - Receives a notification (an object that implements * the {@link IEvent} interface) when an event of the specified type occurs. */ addEventListener: function() {}, /** * Removes the specified listener previously registered with addEventListener. - * @param {Chart} chart -Chart from which to remove the listener - * @param {String} type - The ({@link IEvent}) type to remove - * @param {Function} listener - The listener function to remove from the event target. + * @param {Chart} chart - Chart from which to remove the listener + * @param {string} type - The ({@link IEvent}) type to remove + * @param {function} listener - The listener function to remove from the event target. */ removeEventListener: function() {} }, implementation); +core_defaults._set('global', { + plugins: {} +}); + /** - * @interface IPlatform - * Allows abstracting platform dependencies away from the chart - * @borrows Chart.platform.acquireContext as acquireContext - * @borrows Chart.platform.releaseContext as releaseContext - * @borrows Chart.platform.addEventListener as addEventListener - * @borrows Chart.platform.removeEventListener as removeEventListener + * The plugin service singleton + * @namespace Chart.plugins + * @since 2.1.0 + */ +var core_plugins = { + /** + * Globally registered plugins. + * @private + */ + _plugins: [], + + /** + * This identifier is used to invalidate the descriptors cache attached to each chart + * when a global plugin is registered or unregistered. In this case, the cache ID is + * incremented and descriptors are regenerated during following API calls. + * @private + */ + _cacheId: 0, + + /** + * Registers the given plugin(s) if not already registered. + * @param {IPlugin[]|IPlugin} plugins plugin instance(s). + */ + register: function(plugins) { + var p = this._plugins; + ([]).concat(plugins).forEach(function(plugin) { + if (p.indexOf(plugin) === -1) { + p.push(plugin); + } + }); + + this._cacheId++; + }, + + /** + * Unregisters the given plugin(s) only if registered. + * @param {IPlugin[]|IPlugin} plugins plugin instance(s). + */ + unregister: function(plugins) { + var p = this._plugins; + ([]).concat(plugins).forEach(function(plugin) { + var idx = p.indexOf(plugin); + if (idx !== -1) { + p.splice(idx, 1); + } + }); + + this._cacheId++; + }, + + /** + * Remove all registered plugins. + * @since 2.1.5 + */ + clear: function() { + this._plugins = []; + this._cacheId++; + }, + + /** + * Returns the number of registered plugins? + * @returns {number} + * @since 2.1.5 + */ + count: function() { + return this._plugins.length; + }, + + /** + * Returns all registered plugin instances. + * @returns {IPlugin[]} array of plugin objects. + * @since 2.1.5 + */ + getAll: function() { + return this._plugins; + }, + + /** + * Calls enabled plugins for `chart` on the specified hook and with the given args. + * This method immediately returns as soon as a plugin explicitly returns false. The + * returned value can be used, for instance, to interrupt the current action. + * @param {Chart} chart - The chart instance for which plugins should be called. + * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate'). + * @param {Array} [args] - Extra arguments to apply to the hook call. + * @returns {boolean} false if any of the plugins return false, else returns true. + */ + notify: function(chart, hook, args) { + var descriptors = this.descriptors(chart); + var ilen = descriptors.length; + var i, descriptor, plugin, params, method; + + for (i = 0; i < ilen; ++i) { + descriptor = descriptors[i]; + plugin = descriptor.plugin; + method = plugin[hook]; + if (typeof method === 'function') { + params = [chart].concat(args || []); + params.push(descriptor.options); + if (method.apply(plugin, params) === false) { + return false; + } + } + } + + return true; + }, + + /** + * Returns descriptors of enabled plugins for the given chart. + * @returns {object[]} [{ plugin, options }] + * @private + */ + descriptors: function(chart) { + var cache = chart.$plugins || (chart.$plugins = {}); + if (cache.id === this._cacheId) { + return cache.descriptors; + } + + var plugins = []; + var descriptors = []; + var config = (chart && chart.config) || {}; + var options = (config.options && config.options.plugins) || {}; + + this._plugins.concat(config.plugins || []).forEach(function(plugin) { + var idx = plugins.indexOf(plugin); + if (idx !== -1) { + return; + } + + var id = plugin.id; + var opts = options[id]; + if (opts === false) { + return; + } + + if (opts === true) { + opts = helpers$1.clone(core_defaults.global.plugins[id]); + } + + plugins.push(plugin); + descriptors.push({ + plugin: plugin, + options: opts || {} + }); + }); + + cache.descriptors = descriptors; + cache.id = this._cacheId; + return descriptors; + }, + + /** + * Invalidates cache for the given chart: descriptors hold a reference on plugin option, + * but in some cases, this reference can be changed by the user when updating options. + * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 + * @private + */ + _invalidate: function(chart) { + delete chart.$plugins; + } +}; + +var core_scaleService = { + // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then + // use the new chart options to grab the correct scale + constructors: {}, + // Use a registration function so that we can move to an ES6 map when we no longer need to support + // old browsers + + // Scale config defaults + defaults: {}, + registerScaleType: function(type, scaleConstructor, scaleDefaults) { + this.constructors[type] = scaleConstructor; + this.defaults[type] = helpers$1.clone(scaleDefaults); + }, + getScaleConstructor: function(type) { + return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined; + }, + getScaleDefaults: function(type) { + // Return the scale defaults merged with the global settings so that we always use the latest ones + return this.defaults.hasOwnProperty(type) ? helpers$1.merge({}, [core_defaults.scale, this.defaults[type]]) : {}; + }, + updateScaleDefaults: function(type, additions) { + var me = this; + if (me.defaults.hasOwnProperty(type)) { + me.defaults[type] = helpers$1.extend(me.defaults[type], additions); + } + }, + addScalesToLayout: function(chart) { + // Adds each scale to the chart.boxes array to be sized accordingly + helpers$1.each(chart.scales, function(scale) { + // Set ILayoutItem parameters for backwards compatibility + scale.fullWidth = scale.options.fullWidth; + scale.position = scale.options.position; + scale.weight = scale.options.weight; + core_layouts.addBox(chart, scale); + }); + } +}; + +var valueOrDefault$7 = helpers$1.valueOrDefault; + +core_defaults._set('global', { + tooltips: { + enabled: true, + custom: null, + mode: 'nearest', + position: 'average', + intersect: true, + backgroundColor: 'rgba(0,0,0,0.8)', + titleFontStyle: 'bold', + titleSpacing: 2, + titleMarginBottom: 6, + titleFontColor: '#fff', + titleAlign: 'left', + bodySpacing: 2, + bodyFontColor: '#fff', + bodyAlign: 'left', + footerFontStyle: 'bold', + footerSpacing: 2, + footerMarginTop: 6, + footerFontColor: '#fff', + footerAlign: 'left', + yPadding: 6, + xPadding: 6, + caretPadding: 2, + caretSize: 5, + cornerRadius: 6, + multiKeyBackground: '#fff', + displayColors: true, + borderColor: 'rgba(0,0,0,0)', + borderWidth: 0, + callbacks: { + // Args are: (tooltipItems, data) + beforeTitle: helpers$1.noop, + title: function(tooltipItems, data) { + var title = ''; + var labels = data.labels; + var labelCount = labels ? labels.length : 0; + + if (tooltipItems.length > 0) { + var item = tooltipItems[0]; + if (item.label) { + title = item.label; + } else if (item.xLabel) { + title = item.xLabel; + } else if (labelCount > 0 && item.index < labelCount) { + title = labels[item.index]; + } + } + + return title; + }, + afterTitle: helpers$1.noop, + + // Args are: (tooltipItems, data) + beforeBody: helpers$1.noop, + + // Args are: (tooltipItem, data) + beforeLabel: helpers$1.noop, + label: function(tooltipItem, data) { + var label = data.datasets[tooltipItem.datasetIndex].label || ''; + + if (label) { + label += ': '; + } + if (!helpers$1.isNullOrUndef(tooltipItem.value)) { + label += tooltipItem.value; + } else { + label += tooltipItem.yLabel; + } + return label; + }, + labelColor: function(tooltipItem, chart) { + var meta = chart.getDatasetMeta(tooltipItem.datasetIndex); + var activeElement = meta.data[tooltipItem.index]; + var view = activeElement._view; + return { + borderColor: view.borderColor, + backgroundColor: view.backgroundColor + }; + }, + labelTextColor: function() { + return this._options.bodyFontColor; + }, + afterLabel: helpers$1.noop, + + // Args are: (tooltipItems, data) + afterBody: helpers$1.noop, + + // Args are: (tooltipItems, data) + beforeFooter: helpers$1.noop, + footer: helpers$1.noop, + afterFooter: helpers$1.noop + } + } +}); + +var positioners = { + /** + * Average mode places the tooltip at the average position of the elements shown + * @function Chart.Tooltip.positioners.average + * @param elements {ChartElement[]} the elements being displayed in the tooltip + * @returns {object} tooltip position + */ + average: function(elements) { + if (!elements.length) { + return false; + } + + var i, len; + var x = 0; + var y = 0; + var count = 0; + + for (i = 0, len = elements.length; i < len; ++i) { + var el = elements[i]; + if (el && el.hasValue()) { + var pos = el.tooltipPosition(); + x += pos.x; + y += pos.y; + ++count; + } + } + + return { + x: x / count, + y: y / count + }; + }, + + /** + * Gets the tooltip position nearest of the item nearest to the event position + * @function Chart.Tooltip.positioners.nearest + * @param elements {Chart.Element[]} the tooltip elements + * @param eventPosition {object} the position of the event in canvas coordinates + * @returns {object} the tooltip position + */ + nearest: function(elements, eventPosition) { + var x = eventPosition.x; + var y = eventPosition.y; + var minDistance = Number.POSITIVE_INFINITY; + var i, len, nearestElement; + + for (i = 0, len = elements.length; i < len; ++i) { + var el = elements[i]; + if (el && el.hasValue()) { + var center = el.getCenterPoint(); + var d = helpers$1.distanceBetweenPoints(eventPosition, center); + + if (d < minDistance) { + minDistance = d; + nearestElement = el; + } + } + } + + if (nearestElement) { + var tp = nearestElement.tooltipPosition(); + x = tp.x; + y = tp.y; + } + + return { + x: x, + y: y + }; + } +}; + +// Helper to push or concat based on if the 2nd parameter is an array or not +function pushOrConcat(base, toPush) { + if (toPush) { + if (helpers$1.isArray(toPush)) { + // base = base.concat(toPush); + Array.prototype.push.apply(base, toPush); + } else { + base.push(toPush); + } + } + + return base; +} + +/** + * Returns array of strings split by newline + * @param {string} value - The value to split by newline. + * @returns {string[]} value if newline present - Returned from String split() method + * @function + */ +function splitNewlines(str) { + if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) { + return str.split('\n'); + } + return str; +} + + +/** + * Private helper to create a tooltip item model + * @param element - the chart element (point, arc, bar) to create the tooltip item for + * @return new tooltip item + */ +function createTooltipItem(element) { + var xScale = element._xScale; + var yScale = element._yScale || element._scale; // handle radar || polarArea charts + var index = element._index; + var datasetIndex = element._datasetIndex; + var controller = element._chart.getDatasetMeta(datasetIndex).controller; + var indexScale = controller._getIndexScale(); + var valueScale = controller._getValueScale(); + + return { + xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '', + yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '', + label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '', + value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '', + index: index, + datasetIndex: datasetIndex, + x: element._model.x, + y: element._model.y + }; +} + +/** + * Helper to get the reset model for the tooltip + * @param tooltipOpts {object} the tooltip options + */ +function getBaseModel(tooltipOpts) { + var globalDefaults = core_defaults.global; + + return { + // Positioning + xPadding: tooltipOpts.xPadding, + yPadding: tooltipOpts.yPadding, + xAlign: tooltipOpts.xAlign, + yAlign: tooltipOpts.yAlign, + + // Body + bodyFontColor: tooltipOpts.bodyFontColor, + _bodyFontFamily: valueOrDefault$7(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily), + _bodyFontStyle: valueOrDefault$7(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle), + _bodyAlign: tooltipOpts.bodyAlign, + bodyFontSize: valueOrDefault$7(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize), + bodySpacing: tooltipOpts.bodySpacing, + + // Title + titleFontColor: tooltipOpts.titleFontColor, + _titleFontFamily: valueOrDefault$7(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily), + _titleFontStyle: valueOrDefault$7(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle), + titleFontSize: valueOrDefault$7(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize), + _titleAlign: tooltipOpts.titleAlign, + titleSpacing: tooltipOpts.titleSpacing, + titleMarginBottom: tooltipOpts.titleMarginBottom, + + // Footer + footerFontColor: tooltipOpts.footerFontColor, + _footerFontFamily: valueOrDefault$7(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily), + _footerFontStyle: valueOrDefault$7(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle), + footerFontSize: valueOrDefault$7(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize), + _footerAlign: tooltipOpts.footerAlign, + footerSpacing: tooltipOpts.footerSpacing, + footerMarginTop: tooltipOpts.footerMarginTop, + + // Appearance + caretSize: tooltipOpts.caretSize, + cornerRadius: tooltipOpts.cornerRadius, + backgroundColor: tooltipOpts.backgroundColor, + opacity: 0, + legendColorBackground: tooltipOpts.multiKeyBackground, + displayColors: tooltipOpts.displayColors, + borderColor: tooltipOpts.borderColor, + borderWidth: tooltipOpts.borderWidth + }; +} + +/** + * Get the size of the tooltip + */ +function getTooltipSize(tooltip, model) { + var ctx = tooltip._chart.ctx; + + var height = model.yPadding * 2; // Tooltip Padding + var width = 0; + + // Count of all lines in the body + var body = model.body; + var combinedBodyLength = body.reduce(function(count, bodyItem) { + return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length; + }, 0); + combinedBodyLength += model.beforeBody.length + model.afterBody.length; + + var titleLineCount = model.title.length; + var footerLineCount = model.footer.length; + var titleFontSize = model.titleFontSize; + var bodyFontSize = model.bodyFontSize; + var footerFontSize = model.footerFontSize; + + height += titleLineCount * titleFontSize; // Title Lines + height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing + height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin + height += combinedBodyLength * bodyFontSize; // Body Lines + height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing + height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin + height += footerLineCount * (footerFontSize); // Footer Lines + height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing + + // Title width + var widthPadding = 0; + var maxLineWidth = function(line) { + width = Math.max(width, ctx.measureText(line).width + widthPadding); + }; + + ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily); + helpers$1.each(model.title, maxLineWidth); + + // Body width + ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily); + helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth); + + // Body lines may include some extra width due to the color box + widthPadding = model.displayColors ? (bodyFontSize + 2) : 0; + helpers$1.each(body, function(bodyItem) { + helpers$1.each(bodyItem.before, maxLineWidth); + helpers$1.each(bodyItem.lines, maxLineWidth); + helpers$1.each(bodyItem.after, maxLineWidth); + }); + + // Reset back to 0 + widthPadding = 0; + + // Footer width + ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily); + helpers$1.each(model.footer, maxLineWidth); + + // Add padding + width += 2 * model.xPadding; + + return { + width: width, + height: height + }; +} + +/** + * Helper to get the alignment of a tooltip given the size + */ +function determineAlignment(tooltip, size) { + var model = tooltip._model; + var chart = tooltip._chart; + var chartArea = tooltip._chart.chartArea; + var xAlign = 'center'; + var yAlign = 'center'; + + if (model.y < size.height) { + yAlign = 'top'; + } else if (model.y > (chart.height - size.height)) { + yAlign = 'bottom'; + } + + var lf, rf; // functions to determine left, right alignment + var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart + var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges + var midX = (chartArea.left + chartArea.right) / 2; + var midY = (chartArea.top + chartArea.bottom) / 2; + + if (yAlign === 'center') { + lf = function(x) { + return x <= midX; + }; + rf = function(x) { + return x > midX; + }; + } else { + lf = function(x) { + return x <= (size.width / 2); + }; + rf = function(x) { + return x >= (chart.width - (size.width / 2)); + }; + } + + olf = function(x) { + return x + size.width + model.caretSize + model.caretPadding > chart.width; + }; + orf = function(x) { + return x - size.width - model.caretSize - model.caretPadding < 0; + }; + yf = function(y) { + return y <= midY ? 'top' : 'bottom'; + }; + + if (lf(model.x)) { + xAlign = 'left'; + + // Is tooltip too wide and goes over the right side of the chart.? + if (olf(model.x)) { + xAlign = 'center'; + yAlign = yf(model.y); + } + } else if (rf(model.x)) { + xAlign = 'right'; + + // Is tooltip too wide and goes outside left edge of canvas? + if (orf(model.x)) { + xAlign = 'center'; + yAlign = yf(model.y); + } + } + + var opts = tooltip._options; + return { + xAlign: opts.xAlign ? opts.xAlign : xAlign, + yAlign: opts.yAlign ? opts.yAlign : yAlign + }; +} + +/** + * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment + */ +function getBackgroundPoint(vm, size, alignment, chart) { + // Background Position + var x = vm.x; + var y = vm.y; + + var caretSize = vm.caretSize; + var caretPadding = vm.caretPadding; + var cornerRadius = vm.cornerRadius; + var xAlign = alignment.xAlign; + var yAlign = alignment.yAlign; + var paddingAndSize = caretSize + caretPadding; + var radiusAndPadding = cornerRadius + caretPadding; + + if (xAlign === 'right') { + x -= size.width; + } else if (xAlign === 'center') { + x -= (size.width / 2); + if (x + size.width > chart.width) { + x = chart.width - size.width; + } + if (x < 0) { + x = 0; + } + } + + if (yAlign === 'top') { + y += paddingAndSize; + } else if (yAlign === 'bottom') { + y -= size.height + paddingAndSize; + } else { + y -= (size.height / 2); + } + + if (yAlign === 'center') { + if (xAlign === 'left') { + x += paddingAndSize; + } else if (xAlign === 'right') { + x -= paddingAndSize; + } + } else if (xAlign === 'left') { + x -= radiusAndPadding; + } else if (xAlign === 'right') { + x += radiusAndPadding; + } + + return { + x: x, + y: y + }; +} + +function getAlignedX(vm, align) { + return align === 'center' + ? vm.x + vm.width / 2 + : align === 'right' + ? vm.x + vm.width - vm.xPadding + : vm.x + vm.xPadding; +} + +/** + * Helper to build before and after body lines + */ +function getBeforeAfterBodyLines(callback) { + return pushOrConcat([], splitNewlines(callback)); +} + +var exports$3 = core_element.extend({ + initialize: function() { + this._model = getBaseModel(this._options); + this._lastActive = []; + }, + + // Get the title + // Args are: (tooltipItem, data) + getTitle: function() { + var me = this; + var opts = me._options; + var callbacks = opts.callbacks; + + var beforeTitle = callbacks.beforeTitle.apply(me, arguments); + var title = callbacks.title.apply(me, arguments); + var afterTitle = callbacks.afterTitle.apply(me, arguments); + + var lines = []; + lines = pushOrConcat(lines, splitNewlines(beforeTitle)); + lines = pushOrConcat(lines, splitNewlines(title)); + lines = pushOrConcat(lines, splitNewlines(afterTitle)); + + return lines; + }, + + // Args are: (tooltipItem, data) + getBeforeBody: function() { + return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments)); + }, + + // Args are: (tooltipItem, data) + getBody: function(tooltipItems, data) { + var me = this; + var callbacks = me._options.callbacks; + var bodyItems = []; + + helpers$1.each(tooltipItems, function(tooltipItem) { + var bodyItem = { + before: [], + lines: [], + after: [] + }; + pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data))); + pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data)); + pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data))); + + bodyItems.push(bodyItem); + }); + + return bodyItems; + }, + + // Args are: (tooltipItem, data) + getAfterBody: function() { + return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments)); + }, + + // Get the footer and beforeFooter and afterFooter lines + // Args are: (tooltipItem, data) + getFooter: function() { + var me = this; + var callbacks = me._options.callbacks; + + var beforeFooter = callbacks.beforeFooter.apply(me, arguments); + var footer = callbacks.footer.apply(me, arguments); + var afterFooter = callbacks.afterFooter.apply(me, arguments); + + var lines = []; + lines = pushOrConcat(lines, splitNewlines(beforeFooter)); + lines = pushOrConcat(lines, splitNewlines(footer)); + lines = pushOrConcat(lines, splitNewlines(afterFooter)); + + return lines; + }, + + update: function(changed) { + var me = this; + var opts = me._options; + + // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition + // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time + // which breaks any animations. + var existingModel = me._model; + var model = me._model = getBaseModel(opts); + var active = me._active; + + var data = me._data; + + // In the case where active.length === 0 we need to keep these at existing values for good animations + var alignment = { + xAlign: existingModel.xAlign, + yAlign: existingModel.yAlign + }; + var backgroundPoint = { + x: existingModel.x, + y: existingModel.y + }; + var tooltipSize = { + width: existingModel.width, + height: existingModel.height + }; + var tooltipPosition = { + x: existingModel.caretX, + y: existingModel.caretY + }; + + var i, len; + + if (active.length) { + model.opacity = 1; + + var labelColors = []; + var labelTextColors = []; + tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition); + + var tooltipItems = []; + for (i = 0, len = active.length; i < len; ++i) { + tooltipItems.push(createTooltipItem(active[i])); + } + + // If the user provided a filter function, use it to modify the tooltip items + if (opts.filter) { + tooltipItems = tooltipItems.filter(function(a) { + return opts.filter(a, data); + }); + } + + // If the user provided a sorting function, use it to modify the tooltip items + if (opts.itemSort) { + tooltipItems = tooltipItems.sort(function(a, b) { + return opts.itemSort(a, b, data); + }); + } + + // Determine colors for boxes + helpers$1.each(tooltipItems, function(tooltipItem) { + labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart)); + labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart)); + }); + + + // Build the Text Lines + model.title = me.getTitle(tooltipItems, data); + model.beforeBody = me.getBeforeBody(tooltipItems, data); + model.body = me.getBody(tooltipItems, data); + model.afterBody = me.getAfterBody(tooltipItems, data); + model.footer = me.getFooter(tooltipItems, data); + + // Initial positioning and colors + model.x = tooltipPosition.x; + model.y = tooltipPosition.y; + model.caretPadding = opts.caretPadding; + model.labelColors = labelColors; + model.labelTextColors = labelTextColors; + + // data points + model.dataPoints = tooltipItems; + + // We need to determine alignment of the tooltip + tooltipSize = getTooltipSize(this, model); + alignment = determineAlignment(this, tooltipSize); + // Final Size and Position + backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart); + } else { + model.opacity = 0; + } + + model.xAlign = alignment.xAlign; + model.yAlign = alignment.yAlign; + model.x = backgroundPoint.x; + model.y = backgroundPoint.y; + model.width = tooltipSize.width; + model.height = tooltipSize.height; + + // Point where the caret on the tooltip points to + model.caretX = tooltipPosition.x; + model.caretY = tooltipPosition.y; + + me._model = model; + + if (changed && opts.custom) { + opts.custom.call(me, model); + } + + return me; + }, + + drawCaret: function(tooltipPoint, size) { + var ctx = this._chart.ctx; + var vm = this._view; + var caretPosition = this.getCaretPosition(tooltipPoint, size, vm); + + ctx.lineTo(caretPosition.x1, caretPosition.y1); + ctx.lineTo(caretPosition.x2, caretPosition.y2); + ctx.lineTo(caretPosition.x3, caretPosition.y3); + }, + getCaretPosition: function(tooltipPoint, size, vm) { + var x1, x2, x3, y1, y2, y3; + var caretSize = vm.caretSize; + var cornerRadius = vm.cornerRadius; + var xAlign = vm.xAlign; + var yAlign = vm.yAlign; + var ptX = tooltipPoint.x; + var ptY = tooltipPoint.y; + var width = size.width; + var height = size.height; + + if (yAlign === 'center') { + y2 = ptY + (height / 2); + + if (xAlign === 'left') { + x1 = ptX; + x2 = x1 - caretSize; + x3 = x1; + + y1 = y2 + caretSize; + y3 = y2 - caretSize; + } else { + x1 = ptX + width; + x2 = x1 + caretSize; + x3 = x1; + + y1 = y2 - caretSize; + y3 = y2 + caretSize; + } + } else { + if (xAlign === 'left') { + x2 = ptX + cornerRadius + (caretSize); + x1 = x2 - caretSize; + x3 = x2 + caretSize; + } else if (xAlign === 'right') { + x2 = ptX + width - cornerRadius - caretSize; + x1 = x2 - caretSize; + x3 = x2 + caretSize; + } else { + x2 = vm.caretX; + x1 = x2 - caretSize; + x3 = x2 + caretSize; + } + if (yAlign === 'top') { + y1 = ptY; + y2 = y1 - caretSize; + y3 = y1; + } else { + y1 = ptY + height; + y2 = y1 + caretSize; + y3 = y1; + // invert drawing order + var tmp = x3; + x3 = x1; + x1 = tmp; + } + } + return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3}; + }, + + drawTitle: function(pt, vm, ctx) { + var title = vm.title; + + if (title.length) { + pt.x = getAlignedX(vm, vm._titleAlign); + + ctx.textAlign = vm._titleAlign; + ctx.textBaseline = 'top'; + + var titleFontSize = vm.titleFontSize; + var titleSpacing = vm.titleSpacing; + + ctx.fillStyle = vm.titleFontColor; + ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily); + + var i, len; + for (i = 0, len = title.length; i < len; ++i) { + ctx.fillText(title[i], pt.x, pt.y); + pt.y += titleFontSize + titleSpacing; // Line Height and spacing + + if (i + 1 === title.length) { + pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing + } + } + } + }, + + drawBody: function(pt, vm, ctx) { + var bodyFontSize = vm.bodyFontSize; + var bodySpacing = vm.bodySpacing; + var bodyAlign = vm._bodyAlign; + var body = vm.body; + var drawColorBoxes = vm.displayColors; + var labelColors = vm.labelColors; + var xLinePadding = 0; + var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0; + var textColor; + + ctx.textAlign = bodyAlign; + ctx.textBaseline = 'top'; + ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily); + + pt.x = getAlignedX(vm, bodyAlign); + + // Before Body + var fillLineOfText = function(line) { + ctx.fillText(line, pt.x + xLinePadding, pt.y); + pt.y += bodyFontSize + bodySpacing; + }; + + // Before body lines + ctx.fillStyle = vm.bodyFontColor; + helpers$1.each(vm.beforeBody, fillLineOfText); + + xLinePadding = drawColorBoxes && bodyAlign !== 'right' + ? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2) + : 0; + + // Draw body lines now + helpers$1.each(body, function(bodyItem, i) { + textColor = vm.labelTextColors[i]; + ctx.fillStyle = textColor; + helpers$1.each(bodyItem.before, fillLineOfText); + + helpers$1.each(bodyItem.lines, function(line) { + // Draw Legend-like boxes if needed + if (drawColorBoxes) { + // Fill a white rect so that colours merge nicely if the opacity is < 1 + ctx.fillStyle = vm.legendColorBackground; + ctx.fillRect(colorX, pt.y, bodyFontSize, bodyFontSize); + + // Border + ctx.lineWidth = 1; + ctx.strokeStyle = labelColors[i].borderColor; + ctx.strokeRect(colorX, pt.y, bodyFontSize, bodyFontSize); + + // Inner square + ctx.fillStyle = labelColors[i].backgroundColor; + ctx.fillRect(colorX + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2); + ctx.fillStyle = textColor; + } + + fillLineOfText(line); + }); + + helpers$1.each(bodyItem.after, fillLineOfText); + }); + + // Reset back to 0 for after body + xLinePadding = 0; + + // After body lines + helpers$1.each(vm.afterBody, fillLineOfText); + pt.y -= bodySpacing; // Remove last body spacing + }, + + drawFooter: function(pt, vm, ctx) { + var footer = vm.footer; + + if (footer.length) { + pt.x = getAlignedX(vm, vm._footerAlign); + pt.y += vm.footerMarginTop; + + ctx.textAlign = vm._footerAlign; + ctx.textBaseline = 'top'; + + ctx.fillStyle = vm.footerFontColor; + ctx.font = helpers$1.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily); + + helpers$1.each(footer, function(line) { + ctx.fillText(line, pt.x, pt.y); + pt.y += vm.footerFontSize + vm.footerSpacing; + }); + } + }, + + drawBackground: function(pt, vm, ctx, tooltipSize) { + ctx.fillStyle = vm.backgroundColor; + ctx.strokeStyle = vm.borderColor; + ctx.lineWidth = vm.borderWidth; + var xAlign = vm.xAlign; + var yAlign = vm.yAlign; + var x = pt.x; + var y = pt.y; + var width = tooltipSize.width; + var height = tooltipSize.height; + var radius = vm.cornerRadius; + + ctx.beginPath(); + ctx.moveTo(x + radius, y); + if (yAlign === 'top') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x + width - radius, y); + ctx.quadraticCurveTo(x + width, y, x + width, y + radius); + if (yAlign === 'center' && xAlign === 'right') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x + width, y + height - radius); + ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); + if (yAlign === 'bottom') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x + radius, y + height); + ctx.quadraticCurveTo(x, y + height, x, y + height - radius); + if (yAlign === 'center' && xAlign === 'left') { + this.drawCaret(pt, tooltipSize); + } + ctx.lineTo(x, y + radius); + ctx.quadraticCurveTo(x, y, x + radius, y); + ctx.closePath(); + + ctx.fill(); + + if (vm.borderWidth > 0) { + ctx.stroke(); + } + }, + + draw: function() { + var ctx = this._chart.ctx; + var vm = this._view; + + if (vm.opacity === 0) { + return; + } + + var tooltipSize = { + width: vm.width, + height: vm.height + }; + var pt = { + x: vm.x, + y: vm.y + }; + + // IE11/Edge does not like very small opacities, so snap to 0 + var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity; + + // Truthy/falsey value for empty tooltip + var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length; + + if (this._options.enabled && hasTooltipContent) { + ctx.save(); + ctx.globalAlpha = opacity; + + // Draw Background + this.drawBackground(pt, vm, ctx, tooltipSize); + + // Draw Title, Body, and Footer + pt.y += vm.yPadding; + + // Titles + this.drawTitle(pt, vm, ctx); + + // Body + this.drawBody(pt, vm, ctx); + + // Footer + this.drawFooter(pt, vm, ctx); + + ctx.restore(); + } + }, + + /** + * Handle an event + * @private + * @param {IEvent} event - The event to handle + * @returns {boolean} true if the tooltip changed + */ + handleEvent: function(e) { + var me = this; + var options = me._options; + var changed = false; + + me._lastActive = me._lastActive || []; + + // Find Active Elements for tooltips + if (e.type === 'mouseout') { + me._active = []; + } else { + me._active = me._chart.getElementsAtEventForMode(e, options.mode, options); + } + + // Remember Last Actives + changed = !helpers$1.arrayEquals(me._active, me._lastActive); + + // Only handle target event on tooltip change + if (changed) { + me._lastActive = me._active; + + if (options.enabled || options.custom) { + me._eventPosition = { + x: e.x, + y: e.y + }; + + me.update(true); + me.pivot(); + } + } + + return changed; + } +}); + +/** + * @namespace Chart.Tooltip.positioners + */ +var positioners_1 = positioners; + +var core_tooltip = exports$3; +core_tooltip.positioners = positioners_1; + +var valueOrDefault$8 = helpers$1.valueOrDefault; + +core_defaults._set('global', { + elements: {}, + events: [ + 'mousemove', + 'mouseout', + 'click', + 'touchstart', + 'touchmove' + ], + hover: { + onHover: null, + mode: 'nearest', + intersect: true, + animationDuration: 400 + }, + onClick: null, + maintainAspectRatio: true, + responsive: true, + responsiveAnimationDuration: 0 +}); + +/** + * Recursively merge the given config objects representing the `scales` option + * by incorporating scale defaults in `xAxes` and `yAxes` array items, then + * returns a deep copy of the result, thus doesn't alter inputs. + */ +function mergeScaleConfig(/* config objects ... */) { + return helpers$1.merge({}, [].slice.call(arguments), { + merger: function(key, target, source, options) { + if (key === 'xAxes' || key === 'yAxes') { + var slen = source[key].length; + var i, type, scale; + + if (!target[key]) { + target[key] = []; + } + + for (i = 0; i < slen; ++i) { + scale = source[key][i]; + type = valueOrDefault$8(scale.type, key === 'xAxes' ? 'category' : 'linear'); + + if (i >= target[key].length) { + target[key].push({}); + } + + if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) { + // new/untyped scale or type changed: let's apply the new defaults + // then merge source scale to correctly overwrite the defaults. + helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]); + } else { + // scales type are the same + helpers$1.merge(target[key][i], scale); + } + } + } else { + helpers$1._merger(key, target, source, options); + } + } + }); +} + +/** + * Recursively merge the given config objects as the root options by handling + * default scale options for the `scales` and `scale` properties, then returns + * a deep copy of the result, thus doesn't alter inputs. + */ +function mergeConfig(/* config objects ... */) { + return helpers$1.merge({}, [].slice.call(arguments), { + merger: function(key, target, source, options) { + var tval = target[key] || {}; + var sval = source[key]; + + if (key === 'scales') { + // scale config merging is complex. Add our own function here for that + target[key] = mergeScaleConfig(tval, sval); + } else if (key === 'scale') { + // used in polar area & radar charts since there is only one scale + target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]); + } else { + helpers$1._merger(key, target, source, options); + } + } + }); +} + +function initConfig(config) { + config = config || {}; + + // Do NOT use mergeConfig for the data object because this method merges arrays + // and so would change references to labels and datasets, preventing data updates. + var data = config.data = config.data || {}; + data.datasets = data.datasets || []; + data.labels = data.labels || []; + + config.options = mergeConfig( + core_defaults.global, + core_defaults[config.type], + config.options || {}); + + return config; +} + +function updateConfig(chart) { + var newOptions = chart.options; + + helpers$1.each(chart.scales, function(scale) { + core_layouts.removeBox(chart, scale); + }); + + newOptions = mergeConfig( + core_defaults.global, + core_defaults[chart.config.type], + newOptions); + + chart.options = chart.config.options = newOptions; + chart.ensureScalesHaveIDs(); + chart.buildOrUpdateScales(); + + // Tooltip + chart.tooltip._options = newOptions.tooltips; + chart.tooltip.initialize(); +} + +function positionIsHorizontal(position) { + return position === 'top' || position === 'bottom'; +} + +var Chart = function(item, config) { + this.construct(item, config); + return this; +}; + +helpers$1.extend(Chart.prototype, /** @lends Chart */ { + /** + * @private + */ + construct: function(item, config) { + var me = this; + + config = initConfig(config); + + var context = platform.acquireContext(item, config); + var canvas = context && context.canvas; + var height = canvas && canvas.height; + var width = canvas && canvas.width; + + me.id = helpers$1.uid(); + me.ctx = context; + me.canvas = canvas; + me.config = config; + me.width = width; + me.height = height; + me.aspectRatio = height ? width / height : null; + me.options = config.options; + me._bufferedRender = false; + + /** + * Provided for backward compatibility, Chart and Chart.Controller have been merged, + * the "instance" still need to be defined since it might be called from plugins. + * @prop Chart#chart + * @deprecated since version 2.6.0 + * @todo remove at version 3 + * @private + */ + me.chart = me; + me.controller = me; // chart.chart.controller #inception + + // Add the chart instance to the global namespace + Chart.instances[me.id] = me; + + // Define alias to the config data: `chart.data === chart.config.data` + Object.defineProperty(me, 'data', { + get: function() { + return me.config.data; + }, + set: function(value) { + me.config.data = value; + } + }); + + if (!context || !canvas) { + // The given item is not a compatible context2d element, let's return before finalizing + // the chart initialization but after setting basic chart / controller properties that + // can help to figure out that the chart is not valid (e.g chart.canvas !== null); + // https://github.com/chartjs/Chart.js/issues/2807 + console.error("Failed to create chart: can't acquire context from the given item"); + return; + } + + me.initialize(); + me.update(); + }, + + /** + * @private + */ + initialize: function() { + var me = this; + + // Before init plugin notification + core_plugins.notify(me, 'beforeInit'); + + helpers$1.retinaScale(me, me.options.devicePixelRatio); + + me.bindEvents(); + + if (me.options.responsive) { + // Initial resize before chart draws (must be silent to preserve initial animations). + me.resize(true); + } + + // Make sure scales have IDs and are built before we build any controllers. + me.ensureScalesHaveIDs(); + me.buildOrUpdateScales(); + me.initToolTip(); + + // After init plugin notification + core_plugins.notify(me, 'afterInit'); + + return me; + }, + + clear: function() { + helpers$1.canvas.clear(this); + return this; + }, + + stop: function() { + // Stops any current animation loop occurring + core_animations.cancelAnimation(this); + return this; + }, + + resize: function(silent) { + var me = this; + var options = me.options; + var canvas = me.canvas; + var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null; + + // the canvas render width and height will be casted to integers so make sure that + // the canvas display style uses the same integer values to avoid blurring effect. + + // Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed + var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas))); + var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas))); + + if (me.width === newWidth && me.height === newHeight) { + return; + } + + canvas.width = me.width = newWidth; + canvas.height = me.height = newHeight; + canvas.style.width = newWidth + 'px'; + canvas.style.height = newHeight + 'px'; + + helpers$1.retinaScale(me, options.devicePixelRatio); + + if (!silent) { + // Notify any plugins about the resize + var newSize = {width: newWidth, height: newHeight}; + core_plugins.notify(me, 'resize', [newSize]); + + // Notify of resize + if (options.onResize) { + options.onResize(me, newSize); + } + + me.stop(); + me.update({ + duration: options.responsiveAnimationDuration + }); + } + }, + + ensureScalesHaveIDs: function() { + var options = this.options; + var scalesOptions = options.scales || {}; + var scaleOptions = options.scale; + + helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) { + xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index); + }); + + helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) { + yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index); + }); + + if (scaleOptions) { + scaleOptions.id = scaleOptions.id || 'scale'; + } + }, + + /** + * Builds a map of scale ID to scale object for future lookup. + */ + buildOrUpdateScales: function() { + var me = this; + var options = me.options; + var scales = me.scales || {}; + var items = []; + var updated = Object.keys(scales).reduce(function(obj, id) { + obj[id] = false; + return obj; + }, {}); + + if (options.scales) { + items = items.concat( + (options.scales.xAxes || []).map(function(xAxisOptions) { + return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'}; + }), + (options.scales.yAxes || []).map(function(yAxisOptions) { + return {options: yAxisOptions, dtype: 'linear', dposition: 'left'}; + }) + ); + } + + if (options.scale) { + items.push({ + options: options.scale, + dtype: 'radialLinear', + isDefault: true, + dposition: 'chartArea' + }); + } + + helpers$1.each(items, function(item) { + var scaleOptions = item.options; + var id = scaleOptions.id; + var scaleType = valueOrDefault$8(scaleOptions.type, item.dtype); + + if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) { + scaleOptions.position = item.dposition; + } + + updated[id] = true; + var scale = null; + if (id in scales && scales[id].type === scaleType) { + scale = scales[id]; + scale.options = scaleOptions; + scale.ctx = me.ctx; + scale.chart = me; + } else { + var scaleClass = core_scaleService.getScaleConstructor(scaleType); + if (!scaleClass) { + return; + } + scale = new scaleClass({ + id: id, + type: scaleType, + options: scaleOptions, + ctx: me.ctx, + chart: me + }); + scales[scale.id] = scale; + } + + scale.mergeTicksOptions(); + + // TODO(SB): I think we should be able to remove this custom case (options.scale) + // and consider it as a regular scale part of the "scales"" map only! This would + // make the logic easier and remove some useless? custom code. + if (item.isDefault) { + me.scale = scale; + } + }); + // clear up discarded scales + helpers$1.each(updated, function(hasUpdated, id) { + if (!hasUpdated) { + delete scales[id]; + } + }); + + me.scales = scales; + + core_scaleService.addScalesToLayout(this); + }, + + buildOrUpdateControllers: function() { + var me = this; + var newControllers = []; + + helpers$1.each(me.data.datasets, function(dataset, datasetIndex) { + var meta = me.getDatasetMeta(datasetIndex); + var type = dataset.type || me.config.type; + + if (meta.type && meta.type !== type) { + me.destroyDatasetMeta(datasetIndex); + meta = me.getDatasetMeta(datasetIndex); + } + meta.type = type; + + if (meta.controller) { + meta.controller.updateIndex(datasetIndex); + meta.controller.linkScales(); + } else { + var ControllerClass = controllers[meta.type]; + if (ControllerClass === undefined) { + throw new Error('"' + meta.type + '" is not a chart type.'); + } + + meta.controller = new ControllerClass(me, datasetIndex); + newControllers.push(meta.controller); + } + }, me); + + return newControllers; + }, + + /** + * Reset the elements of all datasets + * @private + */ + resetElements: function() { + var me = this; + helpers$1.each(me.data.datasets, function(dataset, datasetIndex) { + me.getDatasetMeta(datasetIndex).controller.reset(); + }, me); + }, + + /** + * Resets the chart back to it's state before the initial animation + */ + reset: function() { + this.resetElements(); + this.tooltip.initialize(); + }, + + update: function(config) { + var me = this; + + if (!config || typeof config !== 'object') { + // backwards compatibility + config = { + duration: config, + lazy: arguments[1] + }; + } + + updateConfig(me); + + // plugins options references might have change, let's invalidate the cache + // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167 + core_plugins._invalidate(me); + + if (core_plugins.notify(me, 'beforeUpdate') === false) { + return; + } + + // In case the entire data object changed + me.tooltip._data = me.data; + + // Make sure dataset controllers are updated and new controllers are reset + var newControllers = me.buildOrUpdateControllers(); + + // Make sure all dataset controllers have correct meta data counts + helpers$1.each(me.data.datasets, function(dataset, datasetIndex) { + me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements(); + }, me); + + me.updateLayout(); + + // Can only reset the new controllers after the scales have been updated + if (me.options.animation && me.options.animation.duration) { + helpers$1.each(newControllers, function(controller) { + controller.reset(); + }); + } + + me.updateDatasets(); + + // Need to reset tooltip in case it is displayed with elements that are removed + // after update. + me.tooltip.initialize(); + + // Last active contains items that were previously in the tooltip. + // When we reset the tooltip, we need to clear it + me.lastActive = []; + + // Do this before render so that any plugins that need final scale updates can use it + core_plugins.notify(me, 'afterUpdate'); + + if (me._bufferedRender) { + me._bufferedRequest = { + duration: config.duration, + easing: config.easing, + lazy: config.lazy + }; + } else { + me.render(config); + } + }, + + /** + * Updates the chart layout unless a plugin returns `false` to the `beforeLayout` + * hook, in which case, plugins will not be called on `afterLayout`. + * @private + */ + updateLayout: function() { + var me = this; + + if (core_plugins.notify(me, 'beforeLayout') === false) { + return; + } + + core_layouts.update(this, this.width, this.height); + + /** + * Provided for backward compatibility, use `afterLayout` instead. + * @method IPlugin#afterScaleUpdate + * @deprecated since version 2.5.0 + * @todo remove at version 3 + * @private + */ + core_plugins.notify(me, 'afterScaleUpdate'); + core_plugins.notify(me, 'afterLayout'); + }, + + /** + * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate` + * hook, in which case, plugins will not be called on `afterDatasetsUpdate`. + * @private + */ + updateDatasets: function() { + var me = this; + + if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) { + return; + } + + for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { + me.updateDataset(i); + } + + core_plugins.notify(me, 'afterDatasetsUpdate'); + }, + + /** + * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate` + * hook, in which case, plugins will not be called on `afterDatasetUpdate`. + * @private + */ + updateDataset: function(index) { + var me = this; + var meta = me.getDatasetMeta(index); + var args = { + meta: meta, + index: index + }; + + if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) { + return; + } + + meta.controller.update(); + + core_plugins.notify(me, 'afterDatasetUpdate', [args]); + }, + + render: function(config) { + var me = this; + + if (!config || typeof config !== 'object') { + // backwards compatibility + config = { + duration: config, + lazy: arguments[1] + }; + } + + var animationOptions = me.options.animation; + var duration = valueOrDefault$8(config.duration, animationOptions && animationOptions.duration); + var lazy = config.lazy; + + if (core_plugins.notify(me, 'beforeRender') === false) { + return; + } + + var onComplete = function(animation) { + core_plugins.notify(me, 'afterRender'); + helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me); + }; + + if (animationOptions && duration) { + var animation = new core_animation({ + numSteps: duration / 16.66, // 60 fps + easing: config.easing || animationOptions.easing, + + render: function(chart, animationObject) { + var easingFunction = helpers$1.easing.effects[animationObject.easing]; + var currentStep = animationObject.currentStep; + var stepDecimal = currentStep / animationObject.numSteps; + + chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep); + }, + + onAnimationProgress: animationOptions.onProgress, + onAnimationComplete: onComplete + }); + + core_animations.addAnimation(me, animation, duration, lazy); + } else { + me.draw(); + + // See https://github.com/chartjs/Chart.js/issues/3781 + onComplete(new core_animation({numSteps: 0, chart: me})); + } + + return me; + }, + + draw: function(easingValue) { + var me = this; + + me.clear(); + + if (helpers$1.isNullOrUndef(easingValue)) { + easingValue = 1; + } + + me.transition(easingValue); + + if (me.width <= 0 || me.height <= 0) { + return; + } + + if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) { + return; + } + + // Draw all the scales + helpers$1.each(me.boxes, function(box) { + box.draw(me.chartArea); + }, me); + + me.drawDatasets(easingValue); + me._drawTooltip(easingValue); + + core_plugins.notify(me, 'afterDraw', [easingValue]); + }, + + /** + * @private + */ + transition: function(easingValue) { + var me = this; + + for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) { + if (me.isDatasetVisible(i)) { + me.getDatasetMeta(i).controller.transition(easingValue); + } + } + + me.tooltip.transition(easingValue); + }, + + /** + * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw` + * hook, in which case, plugins will not be called on `afterDatasetsDraw`. + * @private + */ + drawDatasets: function(easingValue) { + var me = this; + + if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) { + return; + } + + // Draw datasets reversed to support proper line stacking + for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) { + if (me.isDatasetVisible(i)) { + me.drawDataset(i, easingValue); + } + } + + core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]); + }, + + /** + * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw` + * hook, in which case, plugins will not be called on `afterDatasetDraw`. + * @private + */ + drawDataset: function(index, easingValue) { + var me = this; + var meta = me.getDatasetMeta(index); + var args = { + meta: meta, + index: index, + easingValue: easingValue + }; + + if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) { + return; + } + + meta.controller.draw(easingValue); + + core_plugins.notify(me, 'afterDatasetDraw', [args]); + }, + + /** + * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw` + * hook, in which case, plugins will not be called on `afterTooltipDraw`. + * @private + */ + _drawTooltip: function(easingValue) { + var me = this; + var tooltip = me.tooltip; + var args = { + tooltip: tooltip, + easingValue: easingValue + }; + + if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) { + return; + } + + tooltip.draw(); + + core_plugins.notify(me, 'afterTooltipDraw', [args]); + }, + + /** + * Get the single element that was clicked on + * @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw + */ + getElementAtEvent: function(e) { + return core_interaction.modes.single(this, e); + }, + + getElementsAtEvent: function(e) { + return core_interaction.modes.label(this, e, {intersect: true}); + }, + + getElementsAtXAxis: function(e) { + return core_interaction.modes['x-axis'](this, e, {intersect: true}); + }, + + getElementsAtEventForMode: function(e, mode, options) { + var method = core_interaction.modes[mode]; + if (typeof method === 'function') { + return method(this, e, options); + } + + return []; + }, + + getDatasetAtEvent: function(e) { + return core_interaction.modes.dataset(this, e, {intersect: true}); + }, + + getDatasetMeta: function(datasetIndex) { + var me = this; + var dataset = me.data.datasets[datasetIndex]; + if (!dataset._meta) { + dataset._meta = {}; + } + + var meta = dataset._meta[me.id]; + if (!meta) { + meta = dataset._meta[me.id] = { + type: null, + data: [], + dataset: null, + controller: null, + hidden: null, // See isDatasetVisible() comment + xAxisID: null, + yAxisID: null + }; + } + + return meta; + }, + + getVisibleDatasetCount: function() { + var count = 0; + for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) { + if (this.isDatasetVisible(i)) { + count++; + } + } + return count; + }, + + isDatasetVisible: function(datasetIndex) { + var meta = this.getDatasetMeta(datasetIndex); + + // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false, + // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned. + return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden; + }, + + generateLegend: function() { + return this.options.legendCallback(this); + }, + + /** + * @private + */ + destroyDatasetMeta: function(datasetIndex) { + var id = this.id; + var dataset = this.data.datasets[datasetIndex]; + var meta = dataset._meta && dataset._meta[id]; + + if (meta) { + meta.controller.destroy(); + delete dataset._meta[id]; + } + }, + + destroy: function() { + var me = this; + var canvas = me.canvas; + var i, ilen; + + me.stop(); + + // dataset controllers need to cleanup associated data + for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { + me.destroyDatasetMeta(i); + } + + if (canvas) { + me.unbindEvents(); + helpers$1.canvas.clear(me); + platform.releaseContext(me.ctx); + me.canvas = null; + me.ctx = null; + } + + core_plugins.notify(me, 'destroy'); + + delete Chart.instances[me.id]; + }, + + toBase64Image: function() { + return this.canvas.toDataURL.apply(this.canvas, arguments); + }, + + initToolTip: function() { + var me = this; + me.tooltip = new core_tooltip({ + _chart: me, + _chartInstance: me, // deprecated, backward compatibility + _data: me.data, + _options: me.options.tooltips + }, me); + }, + + /** + * @private + */ + bindEvents: function() { + var me = this; + var listeners = me._listeners = {}; + var listener = function() { + me.eventHandler.apply(me, arguments); + }; + + helpers$1.each(me.options.events, function(type) { + platform.addEventListener(me, type, listener); + listeners[type] = listener; + }); + + // Elements used to detect size change should not be injected for non responsive charts. + // See https://github.com/chartjs/Chart.js/issues/2210 + if (me.options.responsive) { + listener = function() { + me.resize(); + }; + + platform.addEventListener(me, 'resize', listener); + listeners.resize = listener; + } + }, + + /** + * @private + */ + unbindEvents: function() { + var me = this; + var listeners = me._listeners; + if (!listeners) { + return; + } + + delete me._listeners; + helpers$1.each(listeners, function(listener, type) { + platform.removeEventListener(me, type, listener); + }); + }, + + updateHoverStyle: function(elements, mode, enabled) { + var method = enabled ? 'setHoverStyle' : 'removeHoverStyle'; + var element, i, ilen; + + for (i = 0, ilen = elements.length; i < ilen; ++i) { + element = elements[i]; + if (element) { + this.getDatasetMeta(element._datasetIndex).controller[method](element); + } + } + }, + + /** + * @private + */ + eventHandler: function(e) { + var me = this; + var tooltip = me.tooltip; + + if (core_plugins.notify(me, 'beforeEvent', [e]) === false) { + return; + } + + // Buffer any update calls so that renders do not occur + me._bufferedRender = true; + me._bufferedRequest = null; + + var changed = me.handleEvent(e); + // for smooth tooltip animations issue #4989 + // the tooltip should be the source of change + // Animation check workaround: + // tooltip._start will be null when tooltip isn't animating + if (tooltip) { + changed = tooltip._start + ? tooltip.handleEvent(e) + : changed | tooltip.handleEvent(e); + } + + core_plugins.notify(me, 'afterEvent', [e]); + + var bufferedRequest = me._bufferedRequest; + if (bufferedRequest) { + // If we have an update that was triggered, we need to do a normal render + me.render(bufferedRequest); + } else if (changed && !me.animating) { + // If entering, leaving, or changing elements, animate the change via pivot + me.stop(); + + // We only need to render at this point. Updating will cause scales to be + // recomputed generating flicker & using more memory than necessary. + me.render({ + duration: me.options.hover.animationDuration, + lazy: true + }); + } + + me._bufferedRender = false; + me._bufferedRequest = null; + + return me; + }, + + /** + * Handle an event + * @private + * @param {IEvent} event the event to handle + * @return {boolean} true if the chart needs to re-render + */ + handleEvent: function(e) { + var me = this; + var options = me.options || {}; + var hoverOptions = options.hover; + var changed = false; + + me.lastActive = me.lastActive || []; + + // Find Active Elements for hover and tooltips + if (e.type === 'mouseout') { + me.active = []; + } else { + me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions); + } + + // Invoke onHover hook + // Need to call with native event here to not break backwards compatibility + helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me); + + if (e.type === 'mouseup' || e.type === 'click') { + if (options.onClick) { + // Use e.native here for backwards compatibility + options.onClick.call(me, e.native, me.active); + } + } + + // Remove styling for last active (even if it may still be active) + if (me.lastActive.length) { + me.updateHoverStyle(me.lastActive, hoverOptions.mode, false); + } + + // Built in hover styling + if (me.active.length && hoverOptions.mode) { + me.updateHoverStyle(me.active, hoverOptions.mode, true); + } + + changed = !helpers$1.arrayEquals(me.active, me.lastActive); + + // Remember Last Actives + me.lastActive = me.active; + + return changed; + } +}); + +/** + * NOTE(SB) We actually don't use this container anymore but we need to keep it + * for backward compatibility. Though, it can still be useful for plugins that + * would need to work on multiple charts?! + */ +Chart.instances = {}; + +var core_controller = Chart; + +// DEPRECATIONS + +/** + * Provided for backward compatibility, use Chart instead. + * @class Chart.Controller + * @deprecated since version 2.6 + * @todo remove at version 3 + * @private + */ +Chart.Controller = Chart; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart + * @deprecated since version 2.8 + * @todo remove at version 3 + * @private + */ +Chart.types = {}; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart.helpers.configMerge + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ +helpers$1.configMerge = mergeConfig; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart.helpers.scaleMerge + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ +helpers$1.scaleMerge = mergeScaleConfig; + +var core_helpers = function() { + + // -- Basic js utility methods + + helpers$1.where = function(collection, filterCallback) { + if (helpers$1.isArray(collection) && Array.prototype.filter) { + return collection.filter(filterCallback); + } + var filtered = []; + + helpers$1.each(collection, function(item) { + if (filterCallback(item)) { + filtered.push(item); + } + }); + + return filtered; + }; + helpers$1.findIndex = Array.prototype.findIndex ? + function(array, callback, scope) { + return array.findIndex(callback, scope); + } : + function(array, callback, scope) { + scope = scope === undefined ? array : scope; + for (var i = 0, ilen = array.length; i < ilen; ++i) { + if (callback.call(scope, array[i], i, array)) { + return i; + } + } + return -1; + }; + helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) { + // Default to start of the array + if (helpers$1.isNullOrUndef(startIndex)) { + startIndex = -1; + } + for (var i = startIndex + 1; i < arrayToSearch.length; i++) { + var currentItem = arrayToSearch[i]; + if (filterCallback(currentItem)) { + return currentItem; + } + } + }; + helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) { + // Default to end of the array + if (helpers$1.isNullOrUndef(startIndex)) { + startIndex = arrayToSearch.length; + } + for (var i = startIndex - 1; i >= 0; i--) { + var currentItem = arrayToSearch[i]; + if (filterCallback(currentItem)) { + return currentItem; + } + } + }; + + // -- Math methods + helpers$1.isNumber = function(n) { + return !isNaN(parseFloat(n)) && isFinite(n); + }; + helpers$1.almostEquals = function(x, y, epsilon) { + return Math.abs(x - y) < epsilon; + }; + helpers$1.almostWhole = function(x, epsilon) { + var rounded = Math.round(x); + return (((rounded - epsilon) < x) && ((rounded + epsilon) > x)); + }; + helpers$1.max = function(array) { + return array.reduce(function(max, value) { + if (!isNaN(value)) { + return Math.max(max, value); + } + return max; + }, Number.NEGATIVE_INFINITY); + }; + helpers$1.min = function(array) { + return array.reduce(function(min, value) { + if (!isNaN(value)) { + return Math.min(min, value); + } + return min; + }, Number.POSITIVE_INFINITY); + }; + helpers$1.sign = Math.sign ? + function(x) { + return Math.sign(x); + } : + function(x) { + x = +x; // convert to a number + if (x === 0 || isNaN(x)) { + return x; + } + return x > 0 ? 1 : -1; + }; + helpers$1.log10 = Math.log10 ? + function(x) { + return Math.log10(x); + } : + function(x) { + var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10. + // Check for whole powers of 10, + // which due to floating point rounding error should be corrected. + var powerOf10 = Math.round(exponent); + var isPowerOf10 = x === Math.pow(10, powerOf10); + + return isPowerOf10 ? powerOf10 : exponent; + }; + helpers$1.toRadians = function(degrees) { + return degrees * (Math.PI / 180); + }; + helpers$1.toDegrees = function(radians) { + return radians * (180 / Math.PI); + }; + + /** + * Returns the number of decimal places + * i.e. the number of digits after the decimal point, of the value of this Number. + * @param {number} x - A number. + * @returns {number} The number of decimal places. + * @private + */ + helpers$1._decimalPlaces = function(x) { + if (!helpers$1.isFinite(x)) { + return; + } + var e = 1; + var p = 0; + while (Math.round(x * e) / e !== x) { + e *= 10; + p++; + } + return p; + }; + + // Gets the angle from vertical upright to the point about a centre. + helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) { + var distanceFromXCenter = anglePoint.x - centrePoint.x; + var distanceFromYCenter = anglePoint.y - centrePoint.y; + var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter); + + var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter); + + if (angle < (-0.5 * Math.PI)) { + angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2] + } + + return { + angle: angle, + distance: radialDistanceFromCenter + }; + }; + helpers$1.distanceBetweenPoints = function(pt1, pt2) { + return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2)); + }; + + /** + * Provided for backward compatibility, not available anymore + * @function Chart.helpers.aliasPixel + * @deprecated since version 2.8.0 + * @todo remove at version 3 + */ + helpers$1.aliasPixel = function(pixelWidth) { + return (pixelWidth % 2 === 0) ? 0 : 0.5; + }; + + /** + * Returns the aligned pixel value to avoid anti-aliasing blur + * @param {Chart} chart - The chart instance. + * @param {number} pixel - A pixel value. + * @param {number} width - The width of the element. + * @returns {number} The aligned pixel value. + * @private + */ + helpers$1._alignPixel = function(chart, pixel, width) { + var devicePixelRatio = chart.currentDevicePixelRatio; + var halfWidth = width / 2; + return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth; + }; + + helpers$1.splineCurve = function(firstPoint, middlePoint, afterPoint, t) { + // Props to Rob Spencer at scaled innovation for his post on splining between points + // http://scaledinnovation.com/analytics/splines/aboutSplines.html + + // This function must also respect "skipped" points + + var previous = firstPoint.skip ? middlePoint : firstPoint; + var current = middlePoint; + var next = afterPoint.skip ? middlePoint : afterPoint; + + var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2)); + var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2)); + + var s01 = d01 / (d01 + d12); + var s12 = d12 / (d01 + d12); + + // If all points are the same, s01 & s02 will be inf + s01 = isNaN(s01) ? 0 : s01; + s12 = isNaN(s12) ? 0 : s12; + + var fa = t * s01; // scaling factor for triangle Ta + var fb = t * s12; + + return { + previous: { + x: current.x - fa * (next.x - previous.x), + y: current.y - fa * (next.y - previous.y) + }, + next: { + x: current.x + fb * (next.x - previous.x), + y: current.y + fb * (next.y - previous.y) + } + }; + }; + helpers$1.EPSILON = Number.EPSILON || 1e-14; + helpers$1.splineCurveMonotone = function(points) { + // This function calculates Bézier control points in a similar way than |splineCurve|, + // but preserves monotonicity of the provided data and ensures no local extremums are added + // between the dataset discrete points due to the interpolation. + // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation + + var pointsWithTangents = (points || []).map(function(point) { + return { + model: point._model, + deltaK: 0, + mK: 0 + }; + }); + + // Calculate slopes (deltaK) and initialize tangents (mK) + var pointsLen = pointsWithTangents.length; + var i, pointBefore, pointCurrent, pointAfter; + for (i = 0; i < pointsLen; ++i) { + pointCurrent = pointsWithTangents[i]; + if (pointCurrent.model.skip) { + continue; + } + + pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; + pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; + if (pointAfter && !pointAfter.model.skip) { + var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x); + + // In the case of two points that appear at the same x pixel, slopeDeltaX is 0 + pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0; + } + + if (!pointBefore || pointBefore.model.skip) { + pointCurrent.mK = pointCurrent.deltaK; + } else if (!pointAfter || pointAfter.model.skip) { + pointCurrent.mK = pointBefore.deltaK; + } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) { + pointCurrent.mK = 0; + } else { + pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2; + } + } + + // Adjust tangents to ensure monotonic properties + var alphaK, betaK, tauK, squaredMagnitude; + for (i = 0; i < pointsLen - 1; ++i) { + pointCurrent = pointsWithTangents[i]; + pointAfter = pointsWithTangents[i + 1]; + if (pointCurrent.model.skip || pointAfter.model.skip) { + continue; + } + + if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) { + pointCurrent.mK = pointAfter.mK = 0; + continue; + } + + alphaK = pointCurrent.mK / pointCurrent.deltaK; + betaK = pointAfter.mK / pointCurrent.deltaK; + squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2); + if (squaredMagnitude <= 9) { + continue; + } + + tauK = 3 / Math.sqrt(squaredMagnitude); + pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK; + pointAfter.mK = betaK * tauK * pointCurrent.deltaK; + } + + // Compute control points + var deltaX; + for (i = 0; i < pointsLen; ++i) { + pointCurrent = pointsWithTangents[i]; + if (pointCurrent.model.skip) { + continue; + } + + pointBefore = i > 0 ? pointsWithTangents[i - 1] : null; + pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null; + if (pointBefore && !pointBefore.model.skip) { + deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3; + pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX; + pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK; + } + if (pointAfter && !pointAfter.model.skip) { + deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3; + pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX; + pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK; + } + } + }; + helpers$1.nextItem = function(collection, index, loop) { + if (loop) { + return index >= collection.length - 1 ? collection[0] : collection[index + 1]; + } + return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1]; + }; + helpers$1.previousItem = function(collection, index, loop) { + if (loop) { + return index <= 0 ? collection[collection.length - 1] : collection[index - 1]; + } + return index <= 0 ? collection[0] : collection[index - 1]; + }; + // Implementation of the nice number algorithm used in determining where axis labels will go + helpers$1.niceNum = function(range, round) { + var exponent = Math.floor(helpers$1.log10(range)); + var fraction = range / Math.pow(10, exponent); + var niceFraction; + + if (round) { + if (fraction < 1.5) { + niceFraction = 1; + } else if (fraction < 3) { + niceFraction = 2; + } else if (fraction < 7) { + niceFraction = 5; + } else { + niceFraction = 10; + } + } else if (fraction <= 1.0) { + niceFraction = 1; + } else if (fraction <= 2) { + niceFraction = 2; + } else if (fraction <= 5) { + niceFraction = 5; + } else { + niceFraction = 10; + } + + return niceFraction * Math.pow(10, exponent); + }; + // Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/ + helpers$1.requestAnimFrame = (function() { + if (typeof window === 'undefined') { + return function(callback) { + callback(); + }; + } + return window.requestAnimationFrame || + window.webkitRequestAnimationFrame || + window.mozRequestAnimationFrame || + window.oRequestAnimationFrame || + window.msRequestAnimationFrame || + function(callback) { + return window.setTimeout(callback, 1000 / 60); + }; + }()); + // -- DOM methods + helpers$1.getRelativePosition = function(evt, chart) { + var mouseX, mouseY; + var e = evt.originalEvent || evt; + var canvas = evt.target || evt.srcElement; + var boundingRect = canvas.getBoundingClientRect(); + + var touches = e.touches; + if (touches && touches.length > 0) { + mouseX = touches[0].clientX; + mouseY = touches[0].clientY; + + } else { + mouseX = e.clientX; + mouseY = e.clientY; + } + + // Scale mouse coordinates into canvas coordinates + // by following the pattern laid out by 'jerryj' in the comments of + // https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/ + var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left')); + var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top')); + var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right')); + var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom')); + var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight; + var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom; + + // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However + // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here + mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio); + mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio); + + return { + x: mouseX, + y: mouseY + }; + + }; + + // Private helper function to convert max-width/max-height values that may be percentages into a number + function parseMaxStyle(styleValue, node, parentProperty) { + var valueInPixels; + if (typeof styleValue === 'string') { + valueInPixels = parseInt(styleValue, 10); + + if (styleValue.indexOf('%') !== -1) { + // percentage * size in dimension + valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty]; + } + } else { + valueInPixels = styleValue; + } + + return valueInPixels; + } + + /** + * Returns if the given value contains an effective constraint. + * @private + */ + function isConstrainedValue(value) { + return value !== undefined && value !== null && value !== 'none'; + } + + /** + * Returns the max width or height of the given DOM node in a cross-browser compatible fashion + * @param {HTMLElement} domNode - the node to check the constraint on + * @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height') + * @param {string} percentageProperty - property of parent to use when calculating width as a percentage + * @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser} + */ + function getConstraintDimension(domNode, maxStyle, percentageProperty) { + var view = document.defaultView; + var parentNode = helpers$1._getParentNode(domNode); + var constrainedNode = view.getComputedStyle(domNode)[maxStyle]; + var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle]; + var hasCNode = isConstrainedValue(constrainedNode); + var hasCContainer = isConstrainedValue(constrainedContainer); + var infinity = Number.POSITIVE_INFINITY; + + if (hasCNode || hasCContainer) { + return Math.min( + hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity, + hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity); + } + + return 'none'; + } + // returns Number or undefined if no constraint + helpers$1.getConstraintWidth = function(domNode) { + return getConstraintDimension(domNode, 'max-width', 'clientWidth'); + }; + // returns Number or undefined if no constraint + helpers$1.getConstraintHeight = function(domNode) { + return getConstraintDimension(domNode, 'max-height', 'clientHeight'); + }; + /** + * @private + */ + helpers$1._calculatePadding = function(container, padding, parentDimension) { + padding = helpers$1.getStyle(container, padding); + + return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10); + }; + /** + * @private + */ + helpers$1._getParentNode = function(domNode) { + var parent = domNode.parentNode; + if (parent && parent.toString() === '[object ShadowRoot]') { + parent = parent.host; + } + return parent; + }; + helpers$1.getMaximumWidth = function(domNode) { + var container = helpers$1._getParentNode(domNode); + if (!container) { + return domNode.clientWidth; + } + + var clientWidth = container.clientWidth; + var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth); + var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth); + + var w = clientWidth - paddingLeft - paddingRight; + var cw = helpers$1.getConstraintWidth(domNode); + return isNaN(cw) ? w : Math.min(w, cw); + }; + helpers$1.getMaximumHeight = function(domNode) { + var container = helpers$1._getParentNode(domNode); + if (!container) { + return domNode.clientHeight; + } + + var clientHeight = container.clientHeight; + var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight); + var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight); + + var h = clientHeight - paddingTop - paddingBottom; + var ch = helpers$1.getConstraintHeight(domNode); + return isNaN(ch) ? h : Math.min(h, ch); + }; + helpers$1.getStyle = function(el, property) { + return el.currentStyle ? + el.currentStyle[property] : + document.defaultView.getComputedStyle(el, null).getPropertyValue(property); + }; + helpers$1.retinaScale = function(chart, forceRatio) { + var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1; + if (pixelRatio === 1) { + return; + } + + var canvas = chart.canvas; + var height = chart.height; + var width = chart.width; + + canvas.height = height * pixelRatio; + canvas.width = width * pixelRatio; + chart.ctx.scale(pixelRatio, pixelRatio); + + // If no style has been set on the canvas, the render size is used as display size, + // making the chart visually bigger, so let's enforce it to the "correct" values. + // See https://github.com/chartjs/Chart.js/issues/3575 + if (!canvas.style.height && !canvas.style.width) { + canvas.style.height = height + 'px'; + canvas.style.width = width + 'px'; + } + }; + // -- Canvas methods + helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) { + return fontStyle + ' ' + pixelSize + 'px ' + fontFamily; + }; + helpers$1.longestText = function(ctx, font, arrayOfThings, cache) { + cache = cache || {}; + var data = cache.data = cache.data || {}; + var gc = cache.garbageCollect = cache.garbageCollect || []; + + if (cache.font !== font) { + data = cache.data = {}; + gc = cache.garbageCollect = []; + cache.font = font; + } + + ctx.font = font; + var longest = 0; + helpers$1.each(arrayOfThings, function(thing) { + // Undefined strings and arrays should not be measured + if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) { + longest = helpers$1.measureText(ctx, data, gc, longest, thing); + } else if (helpers$1.isArray(thing)) { + // if it is an array lets measure each element + // to do maybe simplify this function a bit so we can do this more recursively? + helpers$1.each(thing, function(nestedThing) { + // Undefined strings and arrays should not be measured + if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) { + longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing); + } + }); + } + }); + + var gcLen = gc.length / 2; + if (gcLen > arrayOfThings.length) { + for (var i = 0; i < gcLen; i++) { + delete data[gc[i]]; + } + gc.splice(0, gcLen); + } + return longest; + }; + helpers$1.measureText = function(ctx, data, gc, longest, string) { + var textWidth = data[string]; + if (!textWidth) { + textWidth = data[string] = ctx.measureText(string).width; + gc.push(string); + } + if (textWidth > longest) { + longest = textWidth; + } + return longest; + }; + helpers$1.numberOfLabelLines = function(arrayOfThings) { + var numberOfLines = 1; + helpers$1.each(arrayOfThings, function(thing) { + if (helpers$1.isArray(thing)) { + if (thing.length > numberOfLines) { + numberOfLines = thing.length; + } + } + }); + return numberOfLines; + }; + + helpers$1.color = !chartjsColor ? + function(value) { + console.error('Color.js not found!'); + return value; + } : + function(value) { + /* global CanvasGradient */ + if (value instanceof CanvasGradient) { + value = core_defaults.global.defaultColor; + } + + return chartjsColor(value); + }; + + helpers$1.getHoverColor = function(colorValue) { + /* global CanvasPattern */ + return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ? + colorValue : + helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString(); + }; +}; + +function abstract() { + throw new Error( + 'This method is not implemented: either no adapter can ' + + 'be found or an incomplete integration was provided.' + ); +} + +/** + * Date adapter (current used by the time scale) + * @namespace Chart._adapters._date + * @memberof Chart._adapters + * @private */ /** - * @interface IEvent - * @prop {String} type - The event type name, possible values are: - * 'contextmenu', 'mouseenter', 'mousedown', 'mousemove', 'mouseup', 'mouseout', - * 'click', 'dblclick', 'keydown', 'keypress', 'keyup' and 'resize' - * @prop {*} native - The original native event (null for emulated events, e.g. 'resize') - * @prop {Number} x - The mouse x position, relative to the canvas (null for incompatible events) - * @prop {Number} y - The mouse y position, relative to the canvas (null for incompatible events) + * Currently supported unit string values. + * @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')} + * @memberof Chart._adapters._date + * @name Unit */ -},{"46":46,"47":47,"48":48}],50:[function(require,module,exports){ -'use strict'; - -module.exports = {}; -module.exports.filler = require(51); -module.exports.legend = require(52); -module.exports.title = require(53); - -},{"51":51,"52":52,"53":53}],51:[function(require,module,exports){ /** - * Plugin based on discussion from the following Chart.js issues: - * @see https://github.com/chartjs/Chart.js/issues/2380#issuecomment-279961569 - * @see https://github.com/chartjs/Chart.js/issues/2440#issuecomment-256461897 + * @class */ +function DateAdapter(options) { + this.options = options || {}; +} -'use strict'; +helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ { + /** + * Returns a map of time formats for the supported formatting units defined + * in Unit as well as 'datetime' representing a detailed date/time string. + * @returns {{string: string}} + */ + formats: abstract, -var defaults = require(26); -var elements = require(41); -var helpers = require(46); + /** + * Parses the given `value` and return the associated timestamp. + * @param {any} value - the value to parse (usually comes from the data) + * @param {string} [format] - the expected data format + * @returns {(number|null)} + * @function + */ + parse: abstract, -defaults._set('global', { + /** + * Returns the formatted date in the specified `format` for a given `timestamp`. + * @param {number} timestamp - the timestamp to format + * @param {string} format - the date/time token + * @return {string} + * @function + */ + format: abstract, + + /** + * Adds the specified `amount` of `unit` to the given `timestamp`. + * @param {number} timestamp - the input timestamp + * @param {number} amount - the amount to add + * @param {Unit} unit - the unit as string + * @return {number} + * @function + */ + add: abstract, + + /** + * Returns the number of `unit` between the given timestamps. + * @param {number} max - the input timestamp (reference) + * @param {number} min - the timestamp to substract + * @param {Unit} unit - the unit as string + * @return {number} + * @function + */ + diff: abstract, + + /** + * Returns start of `unit` for the given `timestamp`. + * @param {number} timestamp - the input timestamp + * @param {Unit} unit - the unit as string + * @param {number} [weekday] - the ISO day of the week with 1 being Monday + * and 7 being Sunday (only needed if param *unit* is `isoWeek`). + * @function + */ + startOf: abstract, + + /** + * Returns end of `unit` for the given `timestamp`. + * @param {number} timestamp - the input timestamp + * @param {Unit} unit - the unit as string + * @function + */ + endOf: abstract, + + // DEPRECATIONS + + /** + * Provided for backward compatibility for scale.getValueForPixel(), + * this method should be overridden only by the moment adapter. + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ + _create: function(value) { + return value; + } +}); + +DateAdapter.override = function(members) { + helpers$1.extend(DateAdapter.prototype, members); +}; + +var _date = DateAdapter; + +var core_adapters = { + _date: _date +}; + +/** + * Namespace to hold static tick generation functions + * @namespace Chart.Ticks + */ +var core_ticks = { + /** + * Namespace to hold formatters for different types of ticks + * @namespace Chart.Ticks.formatters + */ + formatters: { + /** + * Formatter for value labels + * @method Chart.Ticks.formatters.values + * @param value the value to display + * @return {string|string[]} the label to display + */ + values: function(value) { + return helpers$1.isArray(value) ? value : '' + value; + }, + + /** + * Formatter for linear numeric ticks + * @method Chart.Ticks.formatters.linear + * @param tickValue {number} the value to be formatted + * @param index {number} the position of the tickValue parameter in the ticks array + * @param ticks {number[]} the list of ticks being converted + * @return {string} string representation of the tickValue parameter + */ + linear: function(tickValue, index, ticks) { + // If we have lots of ticks, don't use the ones + var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0]; + + // If we have a number like 2.5 as the delta, figure out how many decimal places we need + if (Math.abs(delta) > 1) { + if (tickValue !== Math.floor(tickValue)) { + // not an integer + delta = tickValue - Math.floor(tickValue); + } + } + + var logDelta = helpers$1.log10(Math.abs(delta)); + var tickString = ''; + + if (tickValue !== 0) { + var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1])); + if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation + var logTick = helpers$1.log10(Math.abs(tickValue)); + tickString = tickValue.toExponential(Math.floor(logTick) - Math.floor(logDelta)); + } else { + var numDecimal = -1 * Math.floor(logDelta); + numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places + tickString = tickValue.toFixed(numDecimal); + } + } else { + tickString = '0'; // never show decimal places for 0 + } + + return tickString; + }, + + logarithmic: function(tickValue, index, ticks) { + var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue)))); + + if (tickValue === 0) { + return '0'; + } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) { + return tickValue.toExponential(); + } + return ''; + } + } +}; + +var valueOrDefault$9 = helpers$1.valueOrDefault; +var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault; + +core_defaults._set('scale', { + display: true, + position: 'left', + offset: false, + + // grid line settings + gridLines: { + display: true, + color: 'rgba(0, 0, 0, 0.1)', + lineWidth: 1, + drawBorder: true, + drawOnChartArea: true, + drawTicks: true, + tickMarkLength: 10, + zeroLineWidth: 1, + zeroLineColor: 'rgba(0,0,0,0.25)', + zeroLineBorderDash: [], + zeroLineBorderDashOffset: 0.0, + offsetGridLines: false, + borderDash: [], + borderDashOffset: 0.0 + }, + + // scale label + scaleLabel: { + // display property + display: false, + + // actual label + labelString: '', + + // top/bottom padding + padding: { + top: 4, + bottom: 4 + } + }, + + // label settings + ticks: { + beginAtZero: false, + minRotation: 0, + maxRotation: 50, + mirror: false, + padding: 0, + reverse: false, + display: true, + autoSkip: true, + autoSkipPadding: 0, + labelOffset: 0, + // We pass through arrays to be rendered as multiline labels, we convert Others to strings here. + callback: core_ticks.formatters.values, + minor: {}, + major: {} + } +}); + +function labelsFromTicks(ticks) { + var labels = []; + var i, ilen; + + for (i = 0, ilen = ticks.length; i < ilen; ++i) { + labels.push(ticks[i].label); + } + + return labels; +} + +function getPixelForGridLine(scale, index, offsetGridLines) { + var lineValue = scale.getPixelForTick(index); + + if (offsetGridLines) { + if (scale.getTicks().length === 1) { + lineValue -= scale.isHorizontal() ? + Math.max(lineValue - scale.left, scale.right - lineValue) : + Math.max(lineValue - scale.top, scale.bottom - lineValue); + } else if (index === 0) { + lineValue -= (scale.getPixelForTick(1) - lineValue) / 2; + } else { + lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2; + } + } + return lineValue; +} + +function computeTextSize(context, tick, font) { + return helpers$1.isArray(tick) ? + helpers$1.longestText(context, font, tick) : + context.measureText(tick).width; +} + +var core_scale = core_element.extend({ + /** + * Get the padding needed for the scale + * @method getPadding + * @private + * @returns {Padding} the necessary padding + */ + getPadding: function() { + var me = this; + return { + left: me.paddingLeft || 0, + top: me.paddingTop || 0, + right: me.paddingRight || 0, + bottom: me.paddingBottom || 0 + }; + }, + + /** + * Returns the scale tick objects ({label, major}) + * @since 2.7 + */ + getTicks: function() { + return this._ticks; + }, + + // These methods are ordered by lifecyle. Utilities then follow. + // Any function defined here is inherited by all scale types. + // Any function can be extended by the scale type + + mergeTicksOptions: function() { + var ticks = this.options.ticks; + if (ticks.minor === false) { + ticks.minor = { + display: false + }; + } + if (ticks.major === false) { + ticks.major = { + display: false + }; + } + for (var key in ticks) { + if (key !== 'major' && key !== 'minor') { + if (typeof ticks.minor[key] === 'undefined') { + ticks.minor[key] = ticks[key]; + } + if (typeof ticks.major[key] === 'undefined') { + ticks.major[key] = ticks[key]; + } + } + } + }, + beforeUpdate: function() { + helpers$1.callback(this.options.beforeUpdate, [this]); + }, + + update: function(maxWidth, maxHeight, margins) { + var me = this; + var i, ilen, labels, label, ticks, tick; + + // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;) + me.beforeUpdate(); + + // Absorb the master measurements + me.maxWidth = maxWidth; + me.maxHeight = maxHeight; + me.margins = helpers$1.extend({ + left: 0, + right: 0, + top: 0, + bottom: 0 + }, margins); + + me._maxLabelLines = 0; + me.longestLabelWidth = 0; + me.longestTextCache = me.longestTextCache || {}; + + // Dimensions + me.beforeSetDimensions(); + me.setDimensions(); + me.afterSetDimensions(); + + // Data min/max + me.beforeDataLimits(); + me.determineDataLimits(); + me.afterDataLimits(); + + // Ticks - `this.ticks` is now DEPRECATED! + // Internal ticks are now stored as objects in the PRIVATE `this._ticks` member + // and must not be accessed directly from outside this class. `this.ticks` being + // around for long time and not marked as private, we can't change its structure + // without unexpected breaking changes. If you need to access the scale ticks, + // use scale.getTicks() instead. + + me.beforeBuildTicks(); + + // New implementations should return an array of objects but for BACKWARD COMPAT, + // we still support no return (`this.ticks` internally set by calling this method). + ticks = me.buildTicks() || []; + + // Allow modification of ticks in callback. + ticks = me.afterBuildTicks(ticks) || ticks; + + me.beforeTickToLabelConversion(); + + // New implementations should return the formatted tick labels but for BACKWARD + // COMPAT, we still support no return (`this.ticks` internally changed by calling + // this method and supposed to contain only string values). + labels = me.convertTicksToLabels(ticks) || me.ticks; + + me.afterTickToLabelConversion(); + + me.ticks = labels; // BACKWARD COMPATIBILITY + + // IMPORTANT: from this point, we consider that `this.ticks` will NEVER change! + + // BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`) + for (i = 0, ilen = labels.length; i < ilen; ++i) { + label = labels[i]; + tick = ticks[i]; + if (!tick) { + ticks.push(tick = { + label: label, + major: false + }); + } else { + tick.label = label; + } + } + + me._ticks = ticks; + + // Tick Rotation + me.beforeCalculateTickRotation(); + me.calculateTickRotation(); + me.afterCalculateTickRotation(); + // Fit + me.beforeFit(); + me.fit(); + me.afterFit(); + // + me.afterUpdate(); + + return me.minSize; + + }, + afterUpdate: function() { + helpers$1.callback(this.options.afterUpdate, [this]); + }, + + // + + beforeSetDimensions: function() { + helpers$1.callback(this.options.beforeSetDimensions, [this]); + }, + setDimensions: function() { + var me = this; + // Set the unconstrained dimension before label rotation + if (me.isHorizontal()) { + // Reset position before calculating rotation + me.width = me.maxWidth; + me.left = 0; + me.right = me.width; + } else { + me.height = me.maxHeight; + + // Reset position before calculating rotation + me.top = 0; + me.bottom = me.height; + } + + // Reset padding + me.paddingLeft = 0; + me.paddingTop = 0; + me.paddingRight = 0; + me.paddingBottom = 0; + }, + afterSetDimensions: function() { + helpers$1.callback(this.options.afterSetDimensions, [this]); + }, + + // Data limits + beforeDataLimits: function() { + helpers$1.callback(this.options.beforeDataLimits, [this]); + }, + determineDataLimits: helpers$1.noop, + afterDataLimits: function() { + helpers$1.callback(this.options.afterDataLimits, [this]); + }, + + // + beforeBuildTicks: function() { + helpers$1.callback(this.options.beforeBuildTicks, [this]); + }, + buildTicks: helpers$1.noop, + afterBuildTicks: function(ticks) { + var me = this; + // ticks is empty for old axis implementations here + if (helpers$1.isArray(ticks) && ticks.length) { + return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]); + } + // Support old implementations (that modified `this.ticks` directly in buildTicks) + me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks; + return ticks; + }, + + beforeTickToLabelConversion: function() { + helpers$1.callback(this.options.beforeTickToLabelConversion, [this]); + }, + convertTicksToLabels: function() { + var me = this; + // Convert ticks to strings + var tickOpts = me.options.ticks; + me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this); + }, + afterTickToLabelConversion: function() { + helpers$1.callback(this.options.afterTickToLabelConversion, [this]); + }, + + // + + beforeCalculateTickRotation: function() { + helpers$1.callback(this.options.beforeCalculateTickRotation, [this]); + }, + calculateTickRotation: function() { + var me = this; + var context = me.ctx; + var tickOpts = me.options.ticks; + var labels = labelsFromTicks(me._ticks); + + // Get the width of each grid by calculating the difference + // between x offsets between 0 and 1. + var tickFont = helpers$1.options._parseFont(tickOpts); + context.font = tickFont.string; + + var labelRotation = tickOpts.minRotation || 0; + + if (labels.length && me.options.display && me.isHorizontal()) { + var originalLabelWidth = helpers$1.longestText(context, tickFont.string, labels, me.longestTextCache); + var labelWidth = originalLabelWidth; + var cosRotation, sinRotation; + + // Allow 3 pixels x2 padding either side for label readability + var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6; + + // Max label rotation can be set or default to 90 - also act as a loop counter + while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) { + var angleRadians = helpers$1.toRadians(labelRotation); + cosRotation = Math.cos(angleRadians); + sinRotation = Math.sin(angleRadians); + + if (sinRotation * originalLabelWidth > me.maxHeight) { + // go back one step + labelRotation--; + break; + } + + labelRotation++; + labelWidth = cosRotation * originalLabelWidth; + } + } + + me.labelRotation = labelRotation; + }, + afterCalculateTickRotation: function() { + helpers$1.callback(this.options.afterCalculateTickRotation, [this]); + }, + + // + + beforeFit: function() { + helpers$1.callback(this.options.beforeFit, [this]); + }, + fit: function() { + var me = this; + // Reset + var minSize = me.minSize = { + width: 0, + height: 0 + }; + + var labels = labelsFromTicks(me._ticks); + + var opts = me.options; + var tickOpts = opts.ticks; + var scaleLabelOpts = opts.scaleLabel; + var gridLineOpts = opts.gridLines; + var display = me._isVisible(); + var position = opts.position; + var isHorizontal = me.isHorizontal(); + + var parseFont = helpers$1.options._parseFont; + var tickFont = parseFont(tickOpts); + var tickMarkLength = opts.gridLines.tickMarkLength; + + // Width + if (isHorizontal) { + // subtract the margins to line up with the chartArea if we are a full width scale + minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth; + } else { + minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0; + } + + // height + if (isHorizontal) { + minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0; + } else { + minSize.height = me.maxHeight; // fill all the height + } + + // Are we showing a title for the scale? + if (scaleLabelOpts.display && display) { + var scaleLabelFont = parseFont(scaleLabelOpts); + var scaleLabelPadding = helpers$1.options.toPadding(scaleLabelOpts.padding); + var deltaHeight = scaleLabelFont.lineHeight + scaleLabelPadding.height; + + if (isHorizontal) { + minSize.height += deltaHeight; + } else { + minSize.width += deltaHeight; + } + } + + // Don't bother fitting the ticks if we are not showing the labels + if (tickOpts.display && display) { + var largestTextWidth = helpers$1.longestText(me.ctx, tickFont.string, labels, me.longestTextCache); + var tallestLabelHeightInLines = helpers$1.numberOfLabelLines(labels); + var lineSpace = tickFont.size * 0.5; + var tickPadding = me.options.ticks.padding; + + // Store max number of lines and widest label for _autoSkip + me._maxLabelLines = tallestLabelHeightInLines; + me.longestLabelWidth = largestTextWidth; + + if (isHorizontal) { + var angleRadians = helpers$1.toRadians(me.labelRotation); + var cosRotation = Math.cos(angleRadians); + var sinRotation = Math.sin(angleRadians); + + // TODO - improve this calculation + var labelHeight = (sinRotation * largestTextWidth) + + (tickFont.lineHeight * tallestLabelHeightInLines) + + lineSpace; // padding + + minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding); + + me.ctx.font = tickFont.string; + var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.string); + var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.string); + var offsetLeft = me.getPixelForTick(0) - me.left; + var offsetRight = me.right - me.getPixelForTick(labels.length - 1); + var paddingLeft, paddingRight; + + // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned + // which means that the right padding is dominated by the font height + if (me.labelRotation !== 0) { + paddingLeft = position === 'bottom' ? (cosRotation * firstLabelWidth) : (cosRotation * lineSpace); + paddingRight = position === 'bottom' ? (cosRotation * lineSpace) : (cosRotation * lastLabelWidth); + } else { + paddingLeft = firstLabelWidth / 2; + paddingRight = lastLabelWidth / 2; + } + me.paddingLeft = Math.max(paddingLeft - offsetLeft, 0) + 3; // add 3 px to move away from canvas edges + me.paddingRight = Math.max(paddingRight - offsetRight, 0) + 3; + } else { + // A vertical axis is more constrained by the width. Labels are the + // dominant factor here, so get that length first and account for padding + if (tickOpts.mirror) { + largestTextWidth = 0; + } else { + // use lineSpace for consistency with horizontal axis + // tickPadding is not implemented for horizontal + largestTextWidth += tickPadding + lineSpace; + } + + minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth); + + me.paddingTop = tickFont.size / 2; + me.paddingBottom = tickFont.size / 2; + } + } + + me.handleMargins(); + + me.width = minSize.width; + me.height = minSize.height; + }, + + /** + * Handle margins and padding interactions + * @private + */ + handleMargins: function() { + var me = this; + if (me.margins) { + me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0); + me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0); + me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0); + me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0); + } + }, + + afterFit: function() { + helpers$1.callback(this.options.afterFit, [this]); + }, + + // Shared Methods + isHorizontal: function() { + return this.options.position === 'top' || this.options.position === 'bottom'; + }, + isFullWidth: function() { + return (this.options.fullWidth); + }, + + // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not + getRightValue: function(rawValue) { + // Null and undefined values first + if (helpers$1.isNullOrUndef(rawValue)) { + return NaN; + } + // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values + if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) { + return NaN; + } + // If it is in fact an object, dive in one more level + if (rawValue) { + if (this.isHorizontal()) { + if (rawValue.x !== undefined) { + return this.getRightValue(rawValue.x); + } + } else if (rawValue.y !== undefined) { + return this.getRightValue(rawValue.y); + } + } + + // Value is good, return it + return rawValue; + }, + + /** + * Used to get the value to display in the tooltip for the data at the given index + * @param index + * @param datasetIndex + */ + getLabelForIndex: helpers$1.noop, + + /** + * Returns the location of the given data point. Value can either be an index or a numerical value + * The coordinate (0, 0) is at the upper-left corner of the canvas + * @param value + * @param index + * @param datasetIndex + */ + getPixelForValue: helpers$1.noop, + + /** + * Used to get the data value from a given pixel. This is the inverse of getPixelForValue + * The coordinate (0, 0) is at the upper-left corner of the canvas + * @param pixel + */ + getValueForPixel: helpers$1.noop, + + /** + * Returns the location of the tick at the given index + * The coordinate (0, 0) is at the upper-left corner of the canvas + */ + getPixelForTick: function(index) { + var me = this; + var offset = me.options.offset; + if (me.isHorizontal()) { + var innerWidth = me.width - (me.paddingLeft + me.paddingRight); + var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1); + var pixel = (tickWidth * index) + me.paddingLeft; + + if (offset) { + pixel += tickWidth / 2; + } + + var finalVal = me.left + pixel; + finalVal += me.isFullWidth() ? me.margins.left : 0; + return finalVal; + } + var innerHeight = me.height - (me.paddingTop + me.paddingBottom); + return me.top + (index * (innerHeight / (me._ticks.length - 1))); + }, + + /** + * Utility for getting the pixel location of a percentage of scale + * The coordinate (0, 0) is at the upper-left corner of the canvas + */ + getPixelForDecimal: function(decimal) { + var me = this; + if (me.isHorizontal()) { + var innerWidth = me.width - (me.paddingLeft + me.paddingRight); + var valueOffset = (innerWidth * decimal) + me.paddingLeft; + + var finalVal = me.left + valueOffset; + finalVal += me.isFullWidth() ? me.margins.left : 0; + return finalVal; + } + return me.top + (decimal * me.height); + }, + + /** + * Returns the pixel for the minimum chart value + * The coordinate (0, 0) is at the upper-left corner of the canvas + */ + getBasePixel: function() { + return this.getPixelForValue(this.getBaseValue()); + }, + + getBaseValue: function() { + var me = this; + var min = me.min; + var max = me.max; + + return me.beginAtZero ? 0 : + min < 0 && max < 0 ? max : + min > 0 && max > 0 ? min : + 0; + }, + + /** + * Returns a subset of ticks to be plotted to avoid overlapping labels. + * @private + */ + _autoSkip: function(ticks) { + var me = this; + var isHorizontal = me.isHorizontal(); + var optionTicks = me.options.ticks.minor; + var tickCount = ticks.length; + var skipRatio = false; + var maxTicks = optionTicks.maxTicksLimit; + + // Total space needed to display all ticks. First and last ticks are + // drawn as their center at end of axis, so tickCount-1 + var ticksLength = me._tickSize() * (tickCount - 1); + + // Axis length + var axisLength = isHorizontal + ? me.width - (me.paddingLeft + me.paddingRight) + : me.height - (me.paddingTop + me.PaddingBottom); + + var result = []; + var i, tick; + + if (ticksLength > axisLength) { + skipRatio = 1 + Math.floor(ticksLength / axisLength); + } + + // if they defined a max number of optionTicks, + // increase skipRatio until that number is met + if (tickCount > maxTicks) { + skipRatio = Math.max(skipRatio, 1 + Math.floor(tickCount / maxTicks)); + } + + for (i = 0; i < tickCount; i++) { + tick = ticks[i]; + + if (skipRatio > 1 && i % skipRatio > 0) { + // leave tick in place but make sure it's not displayed (#4635) + delete tick.label; + } + result.push(tick); + } + return result; + }, + + /** + * @private + */ + _tickSize: function() { + var me = this; + var isHorizontal = me.isHorizontal(); + var optionTicks = me.options.ticks.minor; + + // Calculate space needed by label in axis direction. + var rot = helpers$1.toRadians(me.labelRotation); + var cos = Math.abs(Math.cos(rot)); + var sin = Math.abs(Math.sin(rot)); + + var padding = optionTicks.autoSkipPadding || 0; + var w = (me.longestLabelWidth + padding) || 0; + + var tickFont = helpers$1.options._parseFont(optionTicks); + var h = (me._maxLabelLines * tickFont.lineHeight + padding) || 0; + + // Calculate space needed for 1 tick in axis direction. + return isHorizontal + ? h * cos > w * sin ? w / cos : h / sin + : h * sin < w * cos ? h / cos : w / sin; + }, + + /** + * @private + */ + _isVisible: function() { + var me = this; + var chart = me.chart; + var display = me.options.display; + var i, ilen, meta; + + if (display !== 'auto') { + return !!display; + } + + // When 'auto', the scale is visible if at least one associated dataset is visible. + for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) { + if (chart.isDatasetVisible(i)) { + meta = chart.getDatasetMeta(i); + if (meta.xAxisID === me.id || meta.yAxisID === me.id) { + return true; + } + } + } + + return false; + }, + + /** + * Actually draw the scale on the canvas + * @param {object} chartArea - the area of the chart to draw full grid lines on + */ + draw: function(chartArea) { + var me = this; + var options = me.options; + + if (!me._isVisible()) { + return; + } + + var chart = me.chart; + var context = me.ctx; + var globalDefaults = core_defaults.global; + var defaultFontColor = globalDefaults.defaultFontColor; + var optionTicks = options.ticks.minor; + var optionMajorTicks = options.ticks.major || optionTicks; + var gridLines = options.gridLines; + var scaleLabel = options.scaleLabel; + var position = options.position; + + var isRotated = me.labelRotation !== 0; + var isMirrored = optionTicks.mirror; + var isHorizontal = me.isHorizontal(); + + var parseFont = helpers$1.options._parseFont; + var ticks = optionTicks.display && optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks(); + var tickFontColor = valueOrDefault$9(optionTicks.fontColor, defaultFontColor); + var tickFont = parseFont(optionTicks); + var lineHeight = tickFont.lineHeight; + var majorTickFontColor = valueOrDefault$9(optionMajorTicks.fontColor, defaultFontColor); + var majorTickFont = parseFont(optionMajorTicks); + var tickPadding = optionTicks.padding; + var labelOffset = optionTicks.labelOffset; + + var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0; + + var scaleLabelFontColor = valueOrDefault$9(scaleLabel.fontColor, defaultFontColor); + var scaleLabelFont = parseFont(scaleLabel); + var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding); + var labelRotationRadians = helpers$1.toRadians(me.labelRotation); + + var itemsToDraw = []; + + var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0; + var alignPixel = helpers$1._alignPixel; + var borderValue, tickStart, tickEnd; + + if (position === 'top') { + borderValue = alignPixel(chart, me.bottom, axisWidth); + tickStart = me.bottom - tl; + tickEnd = borderValue - axisWidth / 2; + } else if (position === 'bottom') { + borderValue = alignPixel(chart, me.top, axisWidth); + tickStart = borderValue + axisWidth / 2; + tickEnd = me.top + tl; + } else if (position === 'left') { + borderValue = alignPixel(chart, me.right, axisWidth); + tickStart = me.right - tl; + tickEnd = borderValue - axisWidth / 2; + } else { + borderValue = alignPixel(chart, me.left, axisWidth); + tickStart = borderValue + axisWidth / 2; + tickEnd = me.left + tl; + } + + var epsilon = 0.0000001; // 0.0000001 is margin in pixels for Accumulated error. + + helpers$1.each(ticks, function(tick, index) { + // autoskipper skipped this tick (#4635) + if (helpers$1.isNullOrUndef(tick.label)) { + return; + } + + var label = tick.label; + var lineWidth, lineColor, borderDash, borderDashOffset; + if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) { + // Draw the first index specially + lineWidth = gridLines.zeroLineWidth; + lineColor = gridLines.zeroLineColor; + borderDash = gridLines.zeroLineBorderDash || []; + borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0; + } else { + lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, index); + lineColor = valueAtIndexOrDefault(gridLines.color, index); + borderDash = gridLines.borderDash || []; + borderDashOffset = gridLines.borderDashOffset || 0.0; + } + + // Common properties + var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY, textOffset, textAlign; + var labelCount = helpers$1.isArray(label) ? label.length : 1; + var lineValue = getPixelForGridLine(me, index, gridLines.offsetGridLines); + + if (isHorizontal) { + var labelYOffset = tl + tickPadding; + + if (lineValue < me.left - epsilon) { + lineColor = 'rgba(0,0,0,0)'; + } + + tx1 = tx2 = x1 = x2 = alignPixel(chart, lineValue, lineWidth); + ty1 = tickStart; + ty2 = tickEnd; + labelX = me.getPixelForTick(index) + labelOffset; // x values for optionTicks (need to consider offsetLabel option) + + if (position === 'top') { + y1 = alignPixel(chart, chartArea.top, axisWidth) + axisWidth / 2; + y2 = chartArea.bottom; + textOffset = ((!isRotated ? 0.5 : 1) - labelCount) * lineHeight; + textAlign = !isRotated ? 'center' : 'left'; + labelY = me.bottom - labelYOffset; + } else { + y1 = chartArea.top; + y2 = alignPixel(chart, chartArea.bottom, axisWidth) - axisWidth / 2; + textOffset = (!isRotated ? 0.5 : 0) * lineHeight; + textAlign = !isRotated ? 'center' : 'right'; + labelY = me.top + labelYOffset; + } + } else { + var labelXOffset = (isMirrored ? 0 : tl) + tickPadding; + + if (lineValue < me.top - epsilon) { + lineColor = 'rgba(0,0,0,0)'; + } + + tx1 = tickStart; + tx2 = tickEnd; + ty1 = ty2 = y1 = y2 = alignPixel(chart, lineValue, lineWidth); + labelY = me.getPixelForTick(index) + labelOffset; + textOffset = (1 - labelCount) * lineHeight / 2; + + if (position === 'left') { + x1 = alignPixel(chart, chartArea.left, axisWidth) + axisWidth / 2; + x2 = chartArea.right; + textAlign = isMirrored ? 'left' : 'right'; + labelX = me.right - labelXOffset; + } else { + x1 = chartArea.left; + x2 = alignPixel(chart, chartArea.right, axisWidth) - axisWidth / 2; + textAlign = isMirrored ? 'right' : 'left'; + labelX = me.left + labelXOffset; + } + } + + itemsToDraw.push({ + tx1: tx1, + ty1: ty1, + tx2: tx2, + ty2: ty2, + x1: x1, + y1: y1, + x2: x2, + y2: y2, + labelX: labelX, + labelY: labelY, + glWidth: lineWidth, + glColor: lineColor, + glBorderDash: borderDash, + glBorderDashOffset: borderDashOffset, + rotation: -1 * labelRotationRadians, + label: label, + major: tick.major, + textOffset: textOffset, + textAlign: textAlign + }); + }); + + // Draw all of the tick labels, tick marks, and grid lines at the correct places + helpers$1.each(itemsToDraw, function(itemToDraw) { + var glWidth = itemToDraw.glWidth; + var glColor = itemToDraw.glColor; + + if (gridLines.display && glWidth && glColor) { + context.save(); + context.lineWidth = glWidth; + context.strokeStyle = glColor; + if (context.setLineDash) { + context.setLineDash(itemToDraw.glBorderDash); + context.lineDashOffset = itemToDraw.glBorderDashOffset; + } + + context.beginPath(); + + if (gridLines.drawTicks) { + context.moveTo(itemToDraw.tx1, itemToDraw.ty1); + context.lineTo(itemToDraw.tx2, itemToDraw.ty2); + } + + if (gridLines.drawOnChartArea) { + context.moveTo(itemToDraw.x1, itemToDraw.y1); + context.lineTo(itemToDraw.x2, itemToDraw.y2); + } + + context.stroke(); + context.restore(); + } + + if (optionTicks.display) { + // Make sure we draw text in the correct color and font + context.save(); + context.translate(itemToDraw.labelX, itemToDraw.labelY); + context.rotate(itemToDraw.rotation); + context.font = itemToDraw.major ? majorTickFont.string : tickFont.string; + context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor; + context.textBaseline = 'middle'; + context.textAlign = itemToDraw.textAlign; + + var label = itemToDraw.label; + var y = itemToDraw.textOffset; + if (helpers$1.isArray(label)) { + for (var i = 0; i < label.length; ++i) { + // We just make sure the multiline element is a string here.. + context.fillText('' + label[i], 0, y); + y += lineHeight; + } + } else { + context.fillText(label, 0, y); + } + context.restore(); + } + }); + + if (scaleLabel.display) { + // Draw the scale label + var scaleLabelX; + var scaleLabelY; + var rotation = 0; + var halfLineHeight = scaleLabelFont.lineHeight / 2; + + if (isHorizontal) { + scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width + scaleLabelY = position === 'bottom' + ? me.bottom - halfLineHeight - scaleLabelPadding.bottom + : me.top + halfLineHeight + scaleLabelPadding.top; + } else { + var isLeft = position === 'left'; + scaleLabelX = isLeft + ? me.left + halfLineHeight + scaleLabelPadding.top + : me.right - halfLineHeight - scaleLabelPadding.top; + scaleLabelY = me.top + ((me.bottom - me.top) / 2); + rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI; + } + + context.save(); + context.translate(scaleLabelX, scaleLabelY); + context.rotate(rotation); + context.textAlign = 'center'; + context.textBaseline = 'middle'; + context.fillStyle = scaleLabelFontColor; // render in correct colour + context.font = scaleLabelFont.string; + context.fillText(scaleLabel.labelString, 0, 0); + context.restore(); + } + + if (axisWidth) { + // Draw the line at the edge of the axis + var firstLineWidth = axisWidth; + var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, ticks.length - 1, 0); + var x1, x2, y1, y2; + + if (isHorizontal) { + x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2; + x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2; + y1 = y2 = borderValue; + } else { + y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2; + y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2; + x1 = x2 = borderValue; + } + + context.lineWidth = axisWidth; + context.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0); + context.beginPath(); + context.moveTo(x1, y1); + context.lineTo(x2, y2); + context.stroke(); + } + } +}); + +var defaultConfig = { + position: 'bottom' +}; + +var scale_category = core_scale.extend({ + /** + * Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those + * else fall back to data.labels + * @private + */ + getLabels: function() { + var data = this.chart.data; + return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels; + }, + + determineDataLimits: function() { + var me = this; + var labels = me.getLabels(); + me.minIndex = 0; + me.maxIndex = labels.length - 1; + var findIndex; + + if (me.options.ticks.min !== undefined) { + // user specified min value + findIndex = labels.indexOf(me.options.ticks.min); + me.minIndex = findIndex !== -1 ? findIndex : me.minIndex; + } + + if (me.options.ticks.max !== undefined) { + // user specified max value + findIndex = labels.indexOf(me.options.ticks.max); + me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex; + } + + me.min = labels[me.minIndex]; + me.max = labels[me.maxIndex]; + }, + + buildTicks: function() { + var me = this; + var labels = me.getLabels(); + // If we are viewing some subset of labels, slice the original array + me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1); + }, + + getLabelForIndex: function(index, datasetIndex) { + var me = this; + var chart = me.chart; + + if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) { + return me.getRightValue(chart.data.datasets[datasetIndex].data[index]); + } + + return me.ticks[index - me.minIndex]; + }, + + // Used to get data value locations. Value can either be an index or a numerical value + getPixelForValue: function(value, index) { + var me = this; + var offset = me.options.offset; + // 1 is added because we need the length but we have the indexes + var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1); + + // If value is a data object, then index is the index in the data array, + // not the index of the scale. We need to change that. + var valueCategory; + if (value !== undefined && value !== null) { + valueCategory = me.isHorizontal() ? value.x : value.y; + } + if (valueCategory !== undefined || (value !== undefined && isNaN(index))) { + var labels = me.getLabels(); + value = valueCategory || value; + var idx = labels.indexOf(value); + index = idx !== -1 ? idx : index; + } + + if (me.isHorizontal()) { + var valueWidth = me.width / offsetAmt; + var widthOffset = (valueWidth * (index - me.minIndex)); + + if (offset) { + widthOffset += (valueWidth / 2); + } + + return me.left + widthOffset; + } + var valueHeight = me.height / offsetAmt; + var heightOffset = (valueHeight * (index - me.minIndex)); + + if (offset) { + heightOffset += (valueHeight / 2); + } + + return me.top + heightOffset; + }, + + getPixelForTick: function(index) { + return this.getPixelForValue(this.ticks[index], index + this.minIndex, null); + }, + + getValueForPixel: function(pixel) { + var me = this; + var offset = me.options.offset; + var value; + var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1); + var horz = me.isHorizontal(); + var valueDimension = (horz ? me.width : me.height) / offsetAmt; + + pixel -= horz ? me.left : me.top; + + if (offset) { + pixel -= (valueDimension / 2); + } + + if (pixel <= 0) { + value = 0; + } else { + value = Math.round(pixel / valueDimension); + } + + return value + me.minIndex; + }, + + getBasePixel: function() { + return this.bottom; + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults = defaultConfig; +scale_category._defaults = _defaults; + +var noop = helpers$1.noop; +var isNullOrUndef = helpers$1.isNullOrUndef; + +/** + * Generate a set of linear ticks + * @param generationOptions the options used to generate the ticks + * @param dataRange the range of the data + * @returns {number[]} array of tick values + */ +function generateTicks(generationOptions, dataRange) { + var ticks = []; + // To get a "nice" value for the tick spacing, we will use the appropriately named + // "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks + // for details. + + var MIN_SPACING = 1e-14; + var stepSize = generationOptions.stepSize; + var unit = stepSize || 1; + var maxNumSpaces = generationOptions.maxTicks - 1; + var min = generationOptions.min; + var max = generationOptions.max; + var precision = generationOptions.precision; + var rmin = dataRange.min; + var rmax = dataRange.max; + var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit; + var factor, niceMin, niceMax, numSpaces; + + // Beyond MIN_SPACING floating point numbers being to lose precision + // such that we can't do the math necessary to generate ticks + if (spacing < MIN_SPACING && isNullOrUndef(min) && isNullOrUndef(max)) { + return [rmin, rmax]; + } + + numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing); + if (numSpaces > maxNumSpaces) { + // If the calculated num of spaces exceeds maxNumSpaces, recalculate it + spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit; + } + + if (stepSize || isNullOrUndef(precision)) { + // If a precision is not specified, calculate factor based on spacing + factor = Math.pow(10, helpers$1._decimalPlaces(spacing)); + } else { + // If the user specified a precision, round to that number of decimal places + factor = Math.pow(10, precision); + spacing = Math.ceil(spacing * factor) / factor; + } + + niceMin = Math.floor(rmin / spacing) * spacing; + niceMax = Math.ceil(rmax / spacing) * spacing; + + // If min, max and stepSize is set and they make an evenly spaced scale use it. + if (stepSize) { + // If very close to our whole number, use it. + if (!isNullOrUndef(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) { + niceMin = min; + } + if (!isNullOrUndef(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) { + niceMax = max; + } + } + + numSpaces = (niceMax - niceMin) / spacing; + // If very close to our rounded value, use it. + if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) { + numSpaces = Math.round(numSpaces); + } else { + numSpaces = Math.ceil(numSpaces); + } + + niceMin = Math.round(niceMin * factor) / factor; + niceMax = Math.round(niceMax * factor) / factor; + ticks.push(isNullOrUndef(min) ? niceMin : min); + for (var j = 1; j < numSpaces; ++j) { + ticks.push(Math.round((niceMin + j * spacing) * factor) / factor); + } + ticks.push(isNullOrUndef(max) ? niceMax : max); + + return ticks; +} + +var scale_linearbase = core_scale.extend({ + getRightValue: function(value) { + if (typeof value === 'string') { + return +value; + } + return core_scale.prototype.getRightValue.call(this, value); + }, + + handleTickRangeOptions: function() { + var me = this; + var opts = me.options; + var tickOpts = opts.ticks; + + // If we are forcing it to begin at 0, but 0 will already be rendered on the chart, + // do nothing since that would make the chart weird. If the user really wants a weird chart + // axis, they can manually override it + if (tickOpts.beginAtZero) { + var minSign = helpers$1.sign(me.min); + var maxSign = helpers$1.sign(me.max); + + if (minSign < 0 && maxSign < 0) { + // move the top up to 0 + me.max = 0; + } else if (minSign > 0 && maxSign > 0) { + // move the bottom down to 0 + me.min = 0; + } + } + + var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined; + var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined; + + if (tickOpts.min !== undefined) { + me.min = tickOpts.min; + } else if (tickOpts.suggestedMin !== undefined) { + if (me.min === null) { + me.min = tickOpts.suggestedMin; + } else { + me.min = Math.min(me.min, tickOpts.suggestedMin); + } + } + + if (tickOpts.max !== undefined) { + me.max = tickOpts.max; + } else if (tickOpts.suggestedMax !== undefined) { + if (me.max === null) { + me.max = tickOpts.suggestedMax; + } else { + me.max = Math.max(me.max, tickOpts.suggestedMax); + } + } + + if (setMin !== setMax) { + // We set the min or the max but not both. + // So ensure that our range is good + // Inverted or 0 length range can happen when + // ticks.min is set, and no datasets are visible + if (me.min >= me.max) { + if (setMin) { + me.max = me.min + 1; + } else { + me.min = me.max - 1; + } + } + } + + if (me.min === me.max) { + me.max++; + + if (!tickOpts.beginAtZero) { + me.min--; + } + } + }, + + getTickLimit: function() { + var me = this; + var tickOpts = me.options.ticks; + var stepSize = tickOpts.stepSize; + var maxTicksLimit = tickOpts.maxTicksLimit; + var maxTicks; + + if (stepSize) { + maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1; + } else { + maxTicks = me._computeTickLimit(); + maxTicksLimit = maxTicksLimit || 11; + } + + if (maxTicksLimit) { + maxTicks = Math.min(maxTicksLimit, maxTicks); + } + + return maxTicks; + }, + + _computeTickLimit: function() { + return Number.POSITIVE_INFINITY; + }, + + handleDirectionalChanges: noop, + + buildTicks: function() { + var me = this; + var opts = me.options; + var tickOpts = opts.ticks; + + // Figure out what the max number of ticks we can support it is based on the size of + // the axis area. For now, we say that the minimum tick spacing in pixels must be 40 + // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on + // the graph. Make sure we always have at least 2 ticks + var maxTicks = me.getTickLimit(); + maxTicks = Math.max(2, maxTicks); + + var numericGeneratorOptions = { + maxTicks: maxTicks, + min: tickOpts.min, + max: tickOpts.max, + precision: tickOpts.precision, + stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize) + }; + var ticks = me.ticks = generateTicks(numericGeneratorOptions, me); + + me.handleDirectionalChanges(); + + // At this point, we need to update our max and min given the tick values since we have expanded the + // range of the scale + me.max = helpers$1.max(ticks); + me.min = helpers$1.min(ticks); + + if (tickOpts.reverse) { + ticks.reverse(); + + me.start = me.max; + me.end = me.min; + } else { + me.start = me.min; + me.end = me.max; + } + }, + + convertTicksToLabels: function() { + var me = this; + me.ticksAsNumbers = me.ticks.slice(); + me.zeroLineIndex = me.ticks.indexOf(0); + + core_scale.prototype.convertTicksToLabels.call(me); + } +}); + +var defaultConfig$1 = { + position: 'left', + ticks: { + callback: core_ticks.formatters.linear + } +}; + +var scale_linear = scale_linearbase.extend({ + determineDataLimits: function() { + var me = this; + var opts = me.options; + var chart = me.chart; + var data = chart.data; + var datasets = data.datasets; + var isHorizontal = me.isHorizontal(); + var DEFAULT_MIN = 0; + var DEFAULT_MAX = 1; + + function IDMatches(meta) { + return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id; + } + + // First Calculate the range + me.min = null; + me.max = null; + + var hasStacks = opts.stacked; + if (hasStacks === undefined) { + helpers$1.each(datasets, function(dataset, datasetIndex) { + if (hasStacks) { + return; + } + + var meta = chart.getDatasetMeta(datasetIndex); + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) && + meta.stack !== undefined) { + hasStacks = true; + } + }); + } + + if (opts.stacked || hasStacks) { + var valuesPerStack = {}; + + helpers$1.each(datasets, function(dataset, datasetIndex) { + var meta = chart.getDatasetMeta(datasetIndex); + var key = [ + meta.type, + // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined + ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''), + meta.stack + ].join('.'); + + if (valuesPerStack[key] === undefined) { + valuesPerStack[key] = { + positiveValues: [], + negativeValues: [] + }; + } + + // Store these per type + var positiveValues = valuesPerStack[key].positiveValues; + var negativeValues = valuesPerStack[key].negativeValues; + + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { + helpers$1.each(dataset.data, function(rawValue, index) { + var value = +me.getRightValue(rawValue); + if (isNaN(value) || meta.data[index].hidden) { + return; + } + + positiveValues[index] = positiveValues[index] || 0; + negativeValues[index] = negativeValues[index] || 0; + + if (opts.relativePoints) { + positiveValues[index] = 100; + } else if (value < 0) { + negativeValues[index] += value; + } else { + positiveValues[index] += value; + } + }); + } + }); + + helpers$1.each(valuesPerStack, function(valuesForType) { + var values = valuesForType.positiveValues.concat(valuesForType.negativeValues); + var minVal = helpers$1.min(values); + var maxVal = helpers$1.max(values); + me.min = me.min === null ? minVal : Math.min(me.min, minVal); + me.max = me.max === null ? maxVal : Math.max(me.max, maxVal); + }); + + } else { + helpers$1.each(datasets, function(dataset, datasetIndex) { + var meta = chart.getDatasetMeta(datasetIndex); + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { + helpers$1.each(dataset.data, function(rawValue, index) { + var value = +me.getRightValue(rawValue); + if (isNaN(value) || meta.data[index].hidden) { + return; + } + + if (me.min === null) { + me.min = value; + } else if (value < me.min) { + me.min = value; + } + + if (me.max === null) { + me.max = value; + } else if (value > me.max) { + me.max = value; + } + }); + } + }); + } + + me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN; + me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX; + + // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero + this.handleTickRangeOptions(); + }, + + // Returns the maximum number of ticks based on the scale dimension + _computeTickLimit: function() { + var me = this; + var tickFont; + + if (me.isHorizontal()) { + return Math.ceil(me.width / 40); + } + tickFont = helpers$1.options._parseFont(me.options.ticks); + return Math.ceil(me.height / tickFont.lineHeight); + }, + + // Called after the ticks are built. We need + handleDirectionalChanges: function() { + if (!this.isHorizontal()) { + // We are in a vertical orientation. The top value is the highest. So reverse the array + this.ticks.reverse(); + } + }, + + getLabelForIndex: function(index, datasetIndex) { + return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); + }, + + // Utils + getPixelForValue: function(value) { + // This must be called after fit has been run so that + // this.left, this.top, this.right, and this.bottom have been defined + var me = this; + var start = me.start; + + var rightValue = +me.getRightValue(value); + var pixel; + var range = me.end - start; + + if (me.isHorizontal()) { + pixel = me.left + (me.width / range * (rightValue - start)); + } else { + pixel = me.bottom - (me.height / range * (rightValue - start)); + } + return pixel; + }, + + getValueForPixel: function(pixel) { + var me = this; + var isHorizontal = me.isHorizontal(); + var innerDimension = isHorizontal ? me.width : me.height; + var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension; + return me.start + ((me.end - me.start) * offset); + }, + + getPixelForTick: function(index) { + return this.getPixelForValue(this.ticksAsNumbers[index]); + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$1 = defaultConfig$1; +scale_linear._defaults = _defaults$1; + +var valueOrDefault$a = helpers$1.valueOrDefault; + +/** + * Generate a set of logarithmic ticks + * @param generationOptions the options used to generate the ticks + * @param dataRange the range of the data + * @returns {number[]} array of tick values + */ +function generateTicks$1(generationOptions, dataRange) { + var ticks = []; + + var tickVal = valueOrDefault$a(generationOptions.min, Math.pow(10, Math.floor(helpers$1.log10(dataRange.min)))); + + var endExp = Math.floor(helpers$1.log10(dataRange.max)); + var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp)); + var exp, significand; + + if (tickVal === 0) { + exp = Math.floor(helpers$1.log10(dataRange.minNotZero)); + significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp)); + + ticks.push(tickVal); + tickVal = significand * Math.pow(10, exp); + } else { + exp = Math.floor(helpers$1.log10(tickVal)); + significand = Math.floor(tickVal / Math.pow(10, exp)); + } + var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1; + + do { + ticks.push(tickVal); + + ++significand; + if (significand === 10) { + significand = 1; + ++exp; + precision = exp >= 0 ? 1 : precision; + } + + tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision; + } while (exp < endExp || (exp === endExp && significand < endSignificand)); + + var lastTick = valueOrDefault$a(generationOptions.max, tickVal); + ticks.push(lastTick); + + return ticks; +} + +var defaultConfig$2 = { + position: 'left', + + // label settings + ticks: { + callback: core_ticks.formatters.logarithmic + } +}; + +// TODO(v3): change this to positiveOrDefault +function nonNegativeOrDefault(value, defaultValue) { + return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue; +} + +var scale_logarithmic = core_scale.extend({ + determineDataLimits: function() { + var me = this; + var opts = me.options; + var chart = me.chart; + var data = chart.data; + var datasets = data.datasets; + var isHorizontal = me.isHorizontal(); + function IDMatches(meta) { + return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id; + } + + // Calculate Range + me.min = null; + me.max = null; + me.minNotZero = null; + + var hasStacks = opts.stacked; + if (hasStacks === undefined) { + helpers$1.each(datasets, function(dataset, datasetIndex) { + if (hasStacks) { + return; + } + + var meta = chart.getDatasetMeta(datasetIndex); + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) && + meta.stack !== undefined) { + hasStacks = true; + } + }); + } + + if (opts.stacked || hasStacks) { + var valuesPerStack = {}; + + helpers$1.each(datasets, function(dataset, datasetIndex) { + var meta = chart.getDatasetMeta(datasetIndex); + var key = [ + meta.type, + // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined + ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''), + meta.stack + ].join('.'); + + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { + if (valuesPerStack[key] === undefined) { + valuesPerStack[key] = []; + } + + helpers$1.each(dataset.data, function(rawValue, index) { + var values = valuesPerStack[key]; + var value = +me.getRightValue(rawValue); + // invalid, hidden and negative values are ignored + if (isNaN(value) || meta.data[index].hidden || value < 0) { + return; + } + values[index] = values[index] || 0; + values[index] += value; + }); + } + }); + + helpers$1.each(valuesPerStack, function(valuesForType) { + if (valuesForType.length > 0) { + var minVal = helpers$1.min(valuesForType); + var maxVal = helpers$1.max(valuesForType); + me.min = me.min === null ? minVal : Math.min(me.min, minVal); + me.max = me.max === null ? maxVal : Math.max(me.max, maxVal); + } + }); + + } else { + helpers$1.each(datasets, function(dataset, datasetIndex) { + var meta = chart.getDatasetMeta(datasetIndex); + if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { + helpers$1.each(dataset.data, function(rawValue, index) { + var value = +me.getRightValue(rawValue); + // invalid, hidden and negative values are ignored + if (isNaN(value) || meta.data[index].hidden || value < 0) { + return; + } + + if (me.min === null) { + me.min = value; + } else if (value < me.min) { + me.min = value; + } + + if (me.max === null) { + me.max = value; + } else if (value > me.max) { + me.max = value; + } + + if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) { + me.minNotZero = value; + } + }); + } + }); + } + + // Common base implementation to handle ticks.min, ticks.max + this.handleTickRangeOptions(); + }, + + handleTickRangeOptions: function() { + var me = this; + var tickOpts = me.options.ticks; + var DEFAULT_MIN = 1; + var DEFAULT_MAX = 10; + + me.min = nonNegativeOrDefault(tickOpts.min, me.min); + me.max = nonNegativeOrDefault(tickOpts.max, me.max); + + if (me.min === me.max) { + if (me.min !== 0 && me.min !== null) { + me.min = Math.pow(10, Math.floor(helpers$1.log10(me.min)) - 1); + me.max = Math.pow(10, Math.floor(helpers$1.log10(me.max)) + 1); + } else { + me.min = DEFAULT_MIN; + me.max = DEFAULT_MAX; + } + } + if (me.min === null) { + me.min = Math.pow(10, Math.floor(helpers$1.log10(me.max)) - 1); + } + if (me.max === null) { + me.max = me.min !== 0 + ? Math.pow(10, Math.floor(helpers$1.log10(me.min)) + 1) + : DEFAULT_MAX; + } + if (me.minNotZero === null) { + if (me.min > 0) { + me.minNotZero = me.min; + } else if (me.max < 1) { + me.minNotZero = Math.pow(10, Math.floor(helpers$1.log10(me.max))); + } else { + me.minNotZero = DEFAULT_MIN; + } + } + }, + + buildTicks: function() { + var me = this; + var tickOpts = me.options.ticks; + var reverse = !me.isHorizontal(); + + var generationOptions = { + min: nonNegativeOrDefault(tickOpts.min), + max: nonNegativeOrDefault(tickOpts.max) + }; + var ticks = me.ticks = generateTicks$1(generationOptions, me); + + // At this point, we need to update our max and min given the tick values since we have expanded the + // range of the scale + me.max = helpers$1.max(ticks); + me.min = helpers$1.min(ticks); + + if (tickOpts.reverse) { + reverse = !reverse; + me.start = me.max; + me.end = me.min; + } else { + me.start = me.min; + me.end = me.max; + } + if (reverse) { + ticks.reverse(); + } + }, + + convertTicksToLabels: function() { + this.tickValues = this.ticks.slice(); + + core_scale.prototype.convertTicksToLabels.call(this); + }, + + // Get the correct tooltip label + getLabelForIndex: function(index, datasetIndex) { + return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); + }, + + getPixelForTick: function(index) { + return this.getPixelForValue(this.tickValues[index]); + }, + + /** + * Returns the value of the first tick. + * @param {number} value - The minimum not zero value. + * @return {number} The first tick value. + * @private + */ + _getFirstTickValue: function(value) { + var exp = Math.floor(helpers$1.log10(value)); + var significand = Math.floor(value / Math.pow(10, exp)); + + return significand * Math.pow(10, exp); + }, + + getPixelForValue: function(value) { + var me = this; + var tickOpts = me.options.ticks; + var reverse = tickOpts.reverse; + var log10 = helpers$1.log10; + var firstTickValue = me._getFirstTickValue(me.minNotZero); + var offset = 0; + var innerDimension, pixel, start, end, sign; + + value = +me.getRightValue(value); + if (reverse) { + start = me.end; + end = me.start; + sign = -1; + } else { + start = me.start; + end = me.end; + sign = 1; + } + if (me.isHorizontal()) { + innerDimension = me.width; + pixel = reverse ? me.right : me.left; + } else { + innerDimension = me.height; + sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0) + pixel = reverse ? me.top : me.bottom; + } + if (value !== start) { + if (start === 0) { // include zero tick + offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize); + innerDimension -= offset; + start = firstTickValue; + } + if (value !== 0) { + offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start)); + } + pixel += sign * offset; + } + return pixel; + }, + + getValueForPixel: function(pixel) { + var me = this; + var tickOpts = me.options.ticks; + var reverse = tickOpts.reverse; + var log10 = helpers$1.log10; + var firstTickValue = me._getFirstTickValue(me.minNotZero); + var innerDimension, start, end, value; + + if (reverse) { + start = me.end; + end = me.start; + } else { + start = me.start; + end = me.end; + } + if (me.isHorizontal()) { + innerDimension = me.width; + value = reverse ? me.right - pixel : pixel - me.left; + } else { + innerDimension = me.height; + value = reverse ? pixel - me.top : me.bottom - pixel; + } + if (value !== start) { + if (start === 0) { // include zero tick + var offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize); + value -= offset; + innerDimension -= offset; + start = firstTickValue; + } + value *= log10(end) - log10(start); + value /= innerDimension; + value = Math.pow(10, log10(start) + value); + } + return value; + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$2 = defaultConfig$2; +scale_logarithmic._defaults = _defaults$2; + +var valueOrDefault$b = helpers$1.valueOrDefault; +var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault; +var resolve$7 = helpers$1.options.resolve; + +var defaultConfig$3 = { + display: true, + + // Boolean - Whether to animate scaling the chart from the centre + animate: true, + position: 'chartArea', + + angleLines: { + display: true, + color: 'rgba(0, 0, 0, 0.1)', + lineWidth: 1, + borderDash: [], + borderDashOffset: 0.0 + }, + + gridLines: { + circular: false + }, + + // label settings + ticks: { + // Boolean - Show a backdrop to the scale label + showLabelBackdrop: true, + + // String - The colour of the label backdrop + backdropColor: 'rgba(255,255,255,0.75)', + + // Number - The backdrop padding above & below the label in pixels + backdropPaddingY: 2, + + // Number - The backdrop padding to the side of the label in pixels + backdropPaddingX: 2, + + callback: core_ticks.formatters.linear + }, + + pointLabels: { + // Boolean - if true, show point labels + display: true, + + // Number - Point label font size in pixels + fontSize: 10, + + // Function - Used to convert point labels + callback: function(label) { + return label; + } + } +}; + +function getValueCount(scale) { + var opts = scale.options; + return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0; +} + +function getTickBackdropHeight(opts) { + var tickOpts = opts.ticks; + + if (tickOpts.display && opts.display) { + return valueOrDefault$b(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2; + } + return 0; +} + +function measureLabelSize(ctx, lineHeight, label) { + if (helpers$1.isArray(label)) { + return { + w: helpers$1.longestText(ctx, ctx.font, label), + h: label.length * lineHeight + }; + } + + return { + w: ctx.measureText(label).width, + h: lineHeight + }; +} + +function determineLimits(angle, pos, size, min, max) { + if (angle === min || angle === max) { + return { + start: pos - (size / 2), + end: pos + (size / 2) + }; + } else if (angle < min || angle > max) { + return { + start: pos - size, + end: pos + }; + } + + return { + start: pos, + end: pos + size + }; +} + +/** + * Helper function to fit a radial linear scale with point labels + */ +function fitWithPointLabels(scale) { + + // Right, this is really confusing and there is a lot of maths going on here + // The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9 + // + // Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif + // + // Solution: + // + // We assume the radius of the polygon is half the size of the canvas at first + // at each index we check if the text overlaps. + // + // Where it does, we store that angle and that index. + // + // After finding the largest index and angle we calculate how much we need to remove + // from the shape radius to move the point inwards by that x. + // + // We average the left and right distances to get the maximum shape radius that can fit in the box + // along with labels. + // + // Once we have that, we can find the centre point for the chart, by taking the x text protrusion + // on each side, removing that from the size, halving it and adding the left x protrusion width. + // + // This will mean we have a shape fitted to the canvas, as large as it can be with the labels + // and position it in the most space efficient manner + // + // https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif + + var plFont = helpers$1.options._parseFont(scale.options.pointLabels); + + // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width. + // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points + var furthestLimits = { + l: 0, + r: scale.width, + t: 0, + b: scale.height - scale.paddingTop + }; + var furthestAngles = {}; + var i, textSize, pointPosition; + + scale.ctx.font = plFont.string; + scale._pointLabelSizes = []; + + var valueCount = getValueCount(scale); + for (i = 0; i < valueCount; i++) { + pointPosition = scale.getPointPosition(i, scale.drawingArea + 5); + textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i] || ''); + scale._pointLabelSizes[i] = textSize; + + // Add quarter circle to make degree 0 mean top of circle + var angleRadians = scale.getIndexAngle(i); + var angle = helpers$1.toDegrees(angleRadians) % 360; + var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180); + var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270); + + if (hLimits.start < furthestLimits.l) { + furthestLimits.l = hLimits.start; + furthestAngles.l = angleRadians; + } + + if (hLimits.end > furthestLimits.r) { + furthestLimits.r = hLimits.end; + furthestAngles.r = angleRadians; + } + + if (vLimits.start < furthestLimits.t) { + furthestLimits.t = vLimits.start; + furthestAngles.t = angleRadians; + } + + if (vLimits.end > furthestLimits.b) { + furthestLimits.b = vLimits.end; + furthestAngles.b = angleRadians; + } + } + + scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles); +} + +function getTextAlignForAngle(angle) { + if (angle === 0 || angle === 180) { + return 'center'; + } else if (angle < 180) { + return 'left'; + } + + return 'right'; +} + +function fillText(ctx, text, position, lineHeight) { + var y = position.y + lineHeight / 2; + var i, ilen; + + if (helpers$1.isArray(text)) { + for (i = 0, ilen = text.length; i < ilen; ++i) { + ctx.fillText(text[i], position.x, y); + y += lineHeight; + } + } else { + ctx.fillText(text, position.x, y); + } +} + +function adjustPointPositionForLabelHeight(angle, textSize, position) { + if (angle === 90 || angle === 270) { + position.y -= (textSize.h / 2); + } else if (angle > 270 || angle < 90) { + position.y -= textSize.h; + } +} + +function drawPointLabels(scale) { + var ctx = scale.ctx; + var opts = scale.options; + var angleLineOpts = opts.angleLines; + var gridLineOpts = opts.gridLines; + var pointLabelOpts = opts.pointLabels; + var lineWidth = valueOrDefault$b(angleLineOpts.lineWidth, gridLineOpts.lineWidth); + var lineColor = valueOrDefault$b(angleLineOpts.color, gridLineOpts.color); + var tickBackdropHeight = getTickBackdropHeight(opts); + + ctx.save(); + ctx.lineWidth = lineWidth; + ctx.strokeStyle = lineColor; + if (ctx.setLineDash) { + ctx.setLineDash(resolve$7([angleLineOpts.borderDash, gridLineOpts.borderDash, []])); + ctx.lineDashOffset = resolve$7([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]); + } + + var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max); + + // Point Label Font + var plFont = helpers$1.options._parseFont(pointLabelOpts); + + ctx.font = plFont.string; + ctx.textBaseline = 'middle'; + + for (var i = getValueCount(scale) - 1; i >= 0; i--) { + if (angleLineOpts.display && lineWidth && lineColor) { + var outerPosition = scale.getPointPosition(i, outerDistance); + ctx.beginPath(); + ctx.moveTo(scale.xCenter, scale.yCenter); + ctx.lineTo(outerPosition.x, outerPosition.y); + ctx.stroke(); + } + + if (pointLabelOpts.display) { + // Extra pixels out for some label spacing + var extra = (i === 0 ? tickBackdropHeight / 2 : 0); + var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5); + + // Keep this in loop since we may support array properties here + var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor); + ctx.fillStyle = pointLabelFontColor; + + var angleRadians = scale.getIndexAngle(i); + var angle = helpers$1.toDegrees(angleRadians); + ctx.textAlign = getTextAlignForAngle(angle); + adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition); + fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.lineHeight); + } + } + ctx.restore(); +} + +function drawRadiusLine(scale, gridLineOpts, radius, index) { + var ctx = scale.ctx; + var circular = gridLineOpts.circular; + var valueCount = getValueCount(scale); + var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1); + var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1); + var pointPosition; + + if ((!circular && !valueCount) || !lineColor || !lineWidth) { + return; + } + + ctx.save(); + ctx.strokeStyle = lineColor; + ctx.lineWidth = lineWidth; + if (ctx.setLineDash) { + ctx.setLineDash(gridLineOpts.borderDash || []); + ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0; + } + + ctx.beginPath(); + if (circular) { + // Draw circular arcs between the points + ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2); + } else { + // Draw straight lines connecting each index + pointPosition = scale.getPointPosition(0, radius); + ctx.moveTo(pointPosition.x, pointPosition.y); + + for (var i = 1; i < valueCount; i++) { + pointPosition = scale.getPointPosition(i, radius); + ctx.lineTo(pointPosition.x, pointPosition.y); + } + } + ctx.closePath(); + ctx.stroke(); + ctx.restore(); +} + +function numberOrZero(param) { + return helpers$1.isNumber(param) ? param : 0; +} + +var scale_radialLinear = scale_linearbase.extend({ + setDimensions: function() { + var me = this; + + // Set the unconstrained dimension before label rotation + me.width = me.maxWidth; + me.height = me.maxHeight; + me.paddingTop = getTickBackdropHeight(me.options) / 2; + me.xCenter = Math.floor(me.width / 2); + me.yCenter = Math.floor((me.height - me.paddingTop) / 2); + me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2; + }, + + determineDataLimits: function() { + var me = this; + var chart = me.chart; + var min = Number.POSITIVE_INFINITY; + var max = Number.NEGATIVE_INFINITY; + + helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) { + if (chart.isDatasetVisible(datasetIndex)) { + var meta = chart.getDatasetMeta(datasetIndex); + + helpers$1.each(dataset.data, function(rawValue, index) { + var value = +me.getRightValue(rawValue); + if (isNaN(value) || meta.data[index].hidden) { + return; + } + + min = Math.min(value, min); + max = Math.max(value, max); + }); + } + }); + + me.min = (min === Number.POSITIVE_INFINITY ? 0 : min); + me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max); + + // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero + me.handleTickRangeOptions(); + }, + + // Returns the maximum number of ticks based on the scale dimension + _computeTickLimit: function() { + return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options)); + }, + + convertTicksToLabels: function() { + var me = this; + + scale_linearbase.prototype.convertTicksToLabels.call(me); + + // Point labels + me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me); + }, + + getLabelForIndex: function(index, datasetIndex) { + return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); + }, + + fit: function() { + var me = this; + var opts = me.options; + + if (opts.display && opts.pointLabels.display) { + fitWithPointLabels(me); + } else { + me.setCenterPoint(0, 0, 0, 0); + } + }, + + /** + * Set radius reductions and determine new radius and center point + * @private + */ + setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) { + var me = this; + var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l); + var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r); + var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t); + var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b); + + radiusReductionLeft = numberOrZero(radiusReductionLeft); + radiusReductionRight = numberOrZero(radiusReductionRight); + radiusReductionTop = numberOrZero(radiusReductionTop); + radiusReductionBottom = numberOrZero(radiusReductionBottom); + + me.drawingArea = Math.min( + Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2), + Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2)); + me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom); + }, + + setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) { + var me = this; + var maxRight = me.width - rightMovement - me.drawingArea; + var maxLeft = leftMovement + me.drawingArea; + var maxTop = topMovement + me.drawingArea; + var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea; + + me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left); + me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop); + }, + + getIndexAngle: function(index) { + var angleMultiplier = (Math.PI * 2) / getValueCount(this); + var startAngle = this.chart.options && this.chart.options.startAngle ? + this.chart.options.startAngle : + 0; + + var startAngleRadians = startAngle * Math.PI * 2 / 360; + + // Start from the top instead of right, so remove a quarter of the circle + return index * angleMultiplier + startAngleRadians; + }, + + getDistanceFromCenterForValue: function(value) { + var me = this; + + if (value === null) { + return 0; // null always in center + } + + // Take into account half font size + the yPadding of the top value + var scalingFactor = me.drawingArea / (me.max - me.min); + if (me.options.ticks.reverse) { + return (me.max - value) * scalingFactor; + } + return (value - me.min) * scalingFactor; + }, + + getPointPosition: function(index, distanceFromCenter) { + var me = this; + var thisAngle = me.getIndexAngle(index) - (Math.PI / 2); + return { + x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter, + y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter + }; + }, + + getPointPositionForValue: function(index, value) { + return this.getPointPosition(index, this.getDistanceFromCenterForValue(value)); + }, + + getBasePosition: function() { + var me = this; + var min = me.min; + var max = me.max; + + return me.getPointPositionForValue(0, + me.beginAtZero ? 0 : + min < 0 && max < 0 ? max : + min > 0 && max > 0 ? min : + 0); + }, + + draw: function() { + var me = this; + var opts = me.options; + var gridLineOpts = opts.gridLines; + var tickOpts = opts.ticks; + + if (opts.display) { + var ctx = me.ctx; + var startAngle = this.getIndexAngle(0); + var tickFont = helpers$1.options._parseFont(tickOpts); + + if (opts.angleLines.display || opts.pointLabels.display) { + drawPointLabels(me); + } + + helpers$1.each(me.ticks, function(label, index) { + // Don't draw a centre value (if it is minimum) + if (index > 0 || tickOpts.reverse) { + var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]); + + // Draw circular lines around the scale + if (gridLineOpts.display && index !== 0) { + drawRadiusLine(me, gridLineOpts, yCenterOffset, index); + } + + if (tickOpts.display) { + var tickFontColor = valueOrDefault$b(tickOpts.fontColor, core_defaults.global.defaultFontColor); + ctx.font = tickFont.string; + + ctx.save(); + ctx.translate(me.xCenter, me.yCenter); + ctx.rotate(startAngle); + + if (tickOpts.showLabelBackdrop) { + var labelWidth = ctx.measureText(label).width; + ctx.fillStyle = tickOpts.backdropColor; + ctx.fillRect( + -labelWidth / 2 - tickOpts.backdropPaddingX, + -yCenterOffset - tickFont.size / 2 - tickOpts.backdropPaddingY, + labelWidth + tickOpts.backdropPaddingX * 2, + tickFont.size + tickOpts.backdropPaddingY * 2 + ); + } + + ctx.textAlign = 'center'; + ctx.textBaseline = 'middle'; + ctx.fillStyle = tickFontColor; + ctx.fillText(label, 0, -yCenterOffset); + ctx.restore(); + } + } + }); + } + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$3 = defaultConfig$3; +scale_radialLinear._defaults = _defaults$3; + +var valueOrDefault$c = helpers$1.valueOrDefault; + +// Integer constants are from the ES6 spec. +var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991; +var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991; + +var INTERVALS = { + millisecond: { + common: true, + size: 1, + steps: [1, 2, 5, 10, 20, 50, 100, 250, 500] + }, + second: { + common: true, + size: 1000, + steps: [1, 2, 5, 10, 15, 30] + }, + minute: { + common: true, + size: 60000, + steps: [1, 2, 5, 10, 15, 30] + }, + hour: { + common: true, + size: 3600000, + steps: [1, 2, 3, 6, 12] + }, + day: { + common: true, + size: 86400000, + steps: [1, 2, 5] + }, + week: { + common: false, + size: 604800000, + steps: [1, 2, 3, 4] + }, + month: { + common: true, + size: 2.628e9, + steps: [1, 2, 3] + }, + quarter: { + common: false, + size: 7.884e9, + steps: [1, 2, 3, 4] + }, + year: { + common: true, + size: 3.154e10 + } +}; + +var UNITS = Object.keys(INTERVALS); + +function sorter(a, b) { + return a - b; +} + +function arrayUnique(items) { + var hash = {}; + var out = []; + var i, ilen, item; + + for (i = 0, ilen = items.length; i < ilen; ++i) { + item = items[i]; + if (!hash[item]) { + hash[item] = true; + out.push(item); + } + } + + return out; +} + +/** + * Returns an array of {time, pos} objects used to interpolate a specific `time` or position + * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is + * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other + * extremity (left + width or top + height). Note that it would be more optimized to directly + * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need + * to create the lookup table. The table ALWAYS contains at least two items: min and max. + * + * @param {number[]} timestamps - timestamps sorted from lowest to highest. + * @param {string} distribution - If 'linear', timestamps will be spread linearly along the min + * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}. + * If 'series', timestamps will be positioned at the same distance from each other. In this + * case, only timestamps that break the time linearity are registered, meaning that in the + * best case, all timestamps are linear, the table contains only min and max. + */ +function buildLookupTable(timestamps, min, max, distribution) { + if (distribution === 'linear' || !timestamps.length) { + return [ + {time: min, pos: 0}, + {time: max, pos: 1} + ]; + } + + var table = []; + var items = [min]; + var i, ilen, prev, curr, next; + + for (i = 0, ilen = timestamps.length; i < ilen; ++i) { + curr = timestamps[i]; + if (curr > min && curr < max) { + items.push(curr); + } + } + + items.push(max); + + for (i = 0, ilen = items.length; i < ilen; ++i) { + next = items[i + 1]; + prev = items[i - 1]; + curr = items[i]; + + // only add points that breaks the scale linearity + if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) { + table.push({time: curr, pos: i / (ilen - 1)}); + } + } + + return table; +} + +// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/ +function lookup(table, key, value) { + var lo = 0; + var hi = table.length - 1; + var mid, i0, i1; + + while (lo >= 0 && lo <= hi) { + mid = (lo + hi) >> 1; + i0 = table[mid - 1] || null; + i1 = table[mid]; + + if (!i0) { + // given value is outside table (before first item) + return {lo: null, hi: i1}; + } else if (i1[key] < value) { + lo = mid + 1; + } else if (i0[key] > value) { + hi = mid - 1; + } else { + return {lo: i0, hi: i1}; + } + } + + // given value is outside table (after last item) + return {lo: i1, hi: null}; +} + +/** + * Linearly interpolates the given source `value` using the table items `skey` values and + * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos') + * returns the position for a timestamp equal to 42. If value is out of bounds, values at + * index [0, 1] or [n - 1, n] are used for the interpolation. + */ +function interpolate$1(table, skey, sval, tkey) { + var range = lookup(table, skey, sval); + + // Note: the lookup table ALWAYS contains at least 2 items (min and max) + var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo; + var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi; + + var span = next[skey] - prev[skey]; + var ratio = span ? (sval - prev[skey]) / span : 0; + var offset = (next[tkey] - prev[tkey]) * ratio; + + return prev[tkey] + offset; +} + +function toTimestamp(scale, input) { + var adapter = scale._adapter; + var options = scale.options.time; + var parser = options.parser; + var format = parser || options.format; + var value = input; + + if (typeof parser === 'function') { + value = parser(value); + } + + // Only parse if its not a timestamp already + if (!helpers$1.isFinite(value)) { + value = typeof format === 'string' + ? adapter.parse(value, format) + : adapter.parse(value); + } + + if (value !== null) { + return +value; + } + + // Labels are in an incompatible format and no `parser` has been provided. + // The user might still use the deprecated `format` option for parsing. + if (!parser && typeof format === 'function') { + value = format(input); + + // `format` could return something else than a timestamp, if so, parse it + if (!helpers$1.isFinite(value)) { + value = adapter.parse(value); + } + } + + return value; +} + +function parse(scale, input) { + if (helpers$1.isNullOrUndef(input)) { + return null; + } + + var options = scale.options.time; + var value = toTimestamp(scale, scale.getRightValue(input)); + if (value === null) { + return value; + } + + if (options.round) { + value = +scale._adapter.startOf(value, options.round); + } + + return value; +} + +/** + * Returns the number of unit to skip to be able to display up to `capacity` number of ticks + * in `unit` for the given `min` / `max` range and respecting the interval steps constraints. + */ +function determineStepSize(min, max, unit, capacity) { + var range = max - min; + var interval = INTERVALS[unit]; + var milliseconds = interval.size; + var steps = interval.steps; + var i, ilen, factor; + + if (!steps) { + return Math.ceil(range / (capacity * milliseconds)); + } + + for (i = 0, ilen = steps.length; i < ilen; ++i) { + factor = steps[i]; + if (Math.ceil(range / (milliseconds * factor)) <= capacity) { + break; + } + } + + return factor; +} + +/** + * Figures out what unit results in an appropriate number of auto-generated ticks + */ +function determineUnitForAutoTicks(minUnit, min, max, capacity) { + var ilen = UNITS.length; + var i, interval, factor; + + for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) { + interval = INTERVALS[UNITS[i]]; + factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER; + + if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) { + return UNITS[i]; + } + } + + return UNITS[ilen - 1]; +} + +/** + * Figures out what unit to format a set of ticks with + */ +function determineUnitForFormatting(scale, ticks, minUnit, min, max) { + var ilen = UNITS.length; + var i, unit; + + for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) { + unit = UNITS[i]; + if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= ticks.length) { + return unit; + } + } + + return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0]; +} + +function determineMajorUnit(unit) { + for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) { + if (INTERVALS[UNITS[i]].common) { + return UNITS[i]; + } + } +} + +/** + * Generates a maximum of `capacity` timestamps between min and max, rounded to the + * `minor` unit, aligned on the `major` unit and using the given scale time `options`. + * Important: this method can return ticks outside the min and max range, it's the + * responsibility of the calling code to clamp values if needed. + */ +function generate(scale, min, max, capacity) { + var adapter = scale._adapter; + var options = scale.options; + var timeOpts = options.time; + var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity); + var major = determineMajorUnit(minor); + var stepSize = valueOrDefault$c(timeOpts.stepSize, timeOpts.unitStepSize); + var weekday = minor === 'week' ? timeOpts.isoWeekday : false; + var majorTicksEnabled = options.ticks.major.enabled; + var interval = INTERVALS[minor]; + var first = min; + var last = max; + var ticks = []; + var time; + + if (!stepSize) { + stepSize = determineStepSize(min, max, minor, capacity); + } + + // For 'week' unit, handle the first day of week option + if (weekday) { + first = +adapter.startOf(first, 'isoWeek', weekday); + last = +adapter.startOf(last, 'isoWeek', weekday); + } + + // Align first/last ticks on unit + first = +adapter.startOf(first, weekday ? 'day' : minor); + last = +adapter.startOf(last, weekday ? 'day' : minor); + + // Make sure that the last tick include max + if (last < max) { + last = +adapter.add(last, 1, minor); + } + + time = first; + + if (majorTicksEnabled && major && !weekday && !timeOpts.round) { + // Align the first tick on the previous `minor` unit aligned on the `major` unit: + // we first aligned time on the previous `major` unit then add the number of full + // stepSize there is between first and the previous major time. + time = +adapter.startOf(time, major); + time = +adapter.add(time, ~~((first - time) / (interval.size * stepSize)) * stepSize, minor); + } + + for (; time < last; time = +adapter.add(time, stepSize, minor)) { + ticks.push(+time); + } + + ticks.push(+time); + + return ticks; +} + +/** + * Returns the start and end offsets from edges in the form of {start, end} + * where each value is a relative width to the scale and ranges between 0 and 1. + * They add extra margins on the both sides by scaling down the original scale. + * Offsets are added when the `offset` option is true. + */ +function computeOffsets(table, ticks, min, max, options) { + var start = 0; + var end = 0; + var first, last; + + if (options.offset && ticks.length) { + if (!options.time.min) { + first = interpolate$1(table, 'time', ticks[0], 'pos'); + if (ticks.length === 1) { + start = 1 - first; + } else { + start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2; + } + } + if (!options.time.max) { + last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos'); + if (ticks.length === 1) { + end = last; + } else { + end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2; + } + } + } + + return {start: start, end: end}; +} + +function ticksFromTimestamps(scale, values, majorUnit) { + var ticks = []; + var i, ilen, value, major; + + for (i = 0, ilen = values.length; i < ilen; ++i) { + value = values[i]; + major = majorUnit ? value === +scale._adapter.startOf(value, majorUnit) : false; + + ticks.push({ + value: value, + major: major + }); + } + + return ticks; +} + +var defaultConfig$4 = { + position: 'bottom', + + /** + * Data distribution along the scale: + * - 'linear': data are spread according to their time (distances can vary), + * - 'series': data are spread at the same distance from each other. + * @see https://github.com/chartjs/Chart.js/pull/4507 + * @since 2.7.0 + */ + distribution: 'linear', + + /** + * Scale boundary strategy (bypassed by min/max time options) + * - `data`: make sure data are fully visible, ticks outside are removed + * - `ticks`: make sure ticks are fully visible, data outside are truncated + * @see https://github.com/chartjs/Chart.js/pull/4556 + * @since 2.7.0 + */ + bounds: 'data', + + adapters: {}, + time: { + parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment + format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from https://momentjs.com/docs/#/parsing/string-format/ + unit: false, // false == automatic or override with week, month, year, etc. + round: false, // none, or override with week, month, year, etc. + displayFormat: false, // DEPRECATED + isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/ + minUnit: 'millisecond', + displayFormats: {} + }, + ticks: { + autoSkip: false, + + /** + * Ticks generation input values: + * - 'auto': generates "optimal" ticks based on scale size and time options. + * - 'data': generates ticks from data (including labels from data {t|x|y} objects). + * - 'labels': generates ticks from user given `data.labels` values ONLY. + * @see https://github.com/chartjs/Chart.js/pull/4507 + * @since 2.7.0 + */ + source: 'auto', + + major: { + enabled: false + } + } +}; + +var scale_time = core_scale.extend({ + initialize: function() { + this.mergeTicksOptions(); + core_scale.prototype.initialize.call(this); + }, + + update: function() { + var me = this; + var options = me.options; + var time = options.time || (options.time = {}); + var adapter = me._adapter = new core_adapters._date(options.adapters.date); + + // DEPRECATIONS: output a message only one time per update + if (time.format) { + console.warn('options.time.format is deprecated and replaced by options.time.parser.'); + } + + // Backward compatibility: before introducing adapter, `displayFormats` was + // supposed to contain *all* unit/string pairs but this can't be resolved + // when loading the scale (adapters are loaded afterward), so let's populate + // missing formats on update + helpers$1.mergeIf(time.displayFormats, adapter.formats()); + + return core_scale.prototype.update.apply(me, arguments); + }, + + /** + * Allows data to be referenced via 't' attribute + */ + getRightValue: function(rawValue) { + if (rawValue && rawValue.t !== undefined) { + rawValue = rawValue.t; + } + return core_scale.prototype.getRightValue.call(this, rawValue); + }, + + determineDataLimits: function() { + var me = this; + var chart = me.chart; + var adapter = me._adapter; + var timeOpts = me.options.time; + var unit = timeOpts.unit || 'day'; + var min = MAX_INTEGER; + var max = MIN_INTEGER; + var timestamps = []; + var datasets = []; + var labels = []; + var i, j, ilen, jlen, data, timestamp; + var dataLabels = chart.data.labels || []; + + // Convert labels to timestamps + for (i = 0, ilen = dataLabels.length; i < ilen; ++i) { + labels.push(parse(me, dataLabels[i])); + } + + // Convert data to timestamps + for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { + if (chart.isDatasetVisible(i)) { + data = chart.data.datasets[i].data; + + // Let's consider that all data have the same format. + if (helpers$1.isObject(data[0])) { + datasets[i] = []; + + for (j = 0, jlen = data.length; j < jlen; ++j) { + timestamp = parse(me, data[j]); + timestamps.push(timestamp); + datasets[i][j] = timestamp; + } + } else { + for (j = 0, jlen = labels.length; j < jlen; ++j) { + timestamps.push(labels[j]); + } + datasets[i] = labels.slice(0); + } + } else { + datasets[i] = []; + } + } + + if (labels.length) { + // Sort labels **after** data have been converted + labels = arrayUnique(labels).sort(sorter); + min = Math.min(min, labels[0]); + max = Math.max(max, labels[labels.length - 1]); + } + + if (timestamps.length) { + timestamps = arrayUnique(timestamps).sort(sorter); + min = Math.min(min, timestamps[0]); + max = Math.max(max, timestamps[timestamps.length - 1]); + } + + min = parse(me, timeOpts.min) || min; + max = parse(me, timeOpts.max) || max; + + // In case there is no valid min/max, set limits based on unit time option + min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min; + max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max; + + // Make sure that max is strictly higher than min (required by the lookup table) + me.min = Math.min(min, max); + me.max = Math.max(min + 1, max); + + // PRIVATE + me._horizontal = me.isHorizontal(); + me._table = []; + me._timestamps = { + data: timestamps, + datasets: datasets, + labels: labels + }; + }, + + buildTicks: function() { + var me = this; + var min = me.min; + var max = me.max; + var options = me.options; + var timeOpts = options.time; + var timestamps = []; + var ticks = []; + var i, ilen, timestamp; + + switch (options.ticks.source) { + case 'data': + timestamps = me._timestamps.data; + break; + case 'labels': + timestamps = me._timestamps.labels; + break; + case 'auto': + default: + timestamps = generate(me, min, max, me.getLabelCapacity(min), options); + } + + if (options.bounds === 'ticks' && timestamps.length) { + min = timestamps[0]; + max = timestamps[timestamps.length - 1]; + } + + // Enforce limits with user min/max options + min = parse(me, timeOpts.min) || min; + max = parse(me, timeOpts.max) || max; + + // Remove ticks outside the min/max range + for (i = 0, ilen = timestamps.length; i < ilen; ++i) { + timestamp = timestamps[i]; + if (timestamp >= min && timestamp <= max) { + ticks.push(timestamp); + } + } + + me.min = min; + me.max = max; + + // PRIVATE + me._unit = timeOpts.unit || determineUnitForFormatting(me, ticks, timeOpts.minUnit, me.min, me.max); + me._majorUnit = determineMajorUnit(me._unit); + me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution); + me._offsets = computeOffsets(me._table, ticks, min, max, options); + + if (options.ticks.reverse) { + ticks.reverse(); + } + + return ticksFromTimestamps(me, ticks, me._majorUnit); + }, + + getLabelForIndex: function(index, datasetIndex) { + var me = this; + var adapter = me._adapter; + var data = me.chart.data; + var timeOpts = me.options.time; + var label = data.labels && index < data.labels.length ? data.labels[index] : ''; + var value = data.datasets[datasetIndex].data[index]; + + if (helpers$1.isObject(value)) { + label = me.getRightValue(value); + } + if (timeOpts.tooltipFormat) { + return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat); + } + if (typeof label === 'string') { + return label; + } + return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime); + }, + + /** + * Function to format an individual tick mark + * @private + */ + tickFormatFunction: function(time, index, ticks, format) { + var me = this; + var adapter = me._adapter; + var options = me.options; + var formats = options.time.displayFormats; + var minorFormat = formats[me._unit]; + var majorUnit = me._majorUnit; + var majorFormat = formats[majorUnit]; + var majorTime = +adapter.startOf(time, majorUnit); + var majorTickOpts = options.ticks.major; + var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime; + var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat); + var tickOpts = major ? majorTickOpts : options.ticks.minor; + var formatter = valueOrDefault$c(tickOpts.callback, tickOpts.userCallback); + + return formatter ? formatter(label, index, ticks) : label; + }, + + convertTicksToLabels: function(ticks) { + var labels = []; + var i, ilen; + + for (i = 0, ilen = ticks.length; i < ilen; ++i) { + labels.push(this.tickFormatFunction(ticks[i].value, i, ticks)); + } + + return labels; + }, + + /** + * @private + */ + getPixelForOffset: function(time) { + var me = this; + var isReverse = me.options.ticks.reverse; + var size = me._horizontal ? me.width : me.height; + var start = me._horizontal ? isReverse ? me.right : me.left : isReverse ? me.bottom : me.top; + var pos = interpolate$1(me._table, 'time', time, 'pos'); + var offset = size * (me._offsets.start + pos) / (me._offsets.start + 1 + me._offsets.end); + + return isReverse ? start - offset : start + offset; + }, + + getPixelForValue: function(value, index, datasetIndex) { + var me = this; + var time = null; + + if (index !== undefined && datasetIndex !== undefined) { + time = me._timestamps.datasets[datasetIndex][index]; + } + + if (time === null) { + time = parse(me, value); + } + + if (time !== null) { + return me.getPixelForOffset(time); + } + }, + + getPixelForTick: function(index) { + var ticks = this.getTicks(); + return index >= 0 && index < ticks.length ? + this.getPixelForOffset(ticks[index].value) : + null; + }, + + getValueForPixel: function(pixel) { + var me = this; + var size = me._horizontal ? me.width : me.height; + var start = me._horizontal ? me.left : me.top; + var pos = (size ? (pixel - start) / size : 0) * (me._offsets.start + 1 + me._offsets.start) - me._offsets.end; + var time = interpolate$1(me._table, 'pos', pos, 'time'); + + // DEPRECATION, we should return time directly + return me._adapter._create(time); + }, + + /** + * Crude approximation of what the label width might be + * @private + */ + getLabelWidth: function(label) { + var me = this; + var ticksOpts = me.options.ticks; + var tickLabelWidth = me.ctx.measureText(label).width; + var angle = helpers$1.toRadians(ticksOpts.maxRotation); + var cosRotation = Math.cos(angle); + var sinRotation = Math.sin(angle); + var tickFontSize = valueOrDefault$c(ticksOpts.fontSize, core_defaults.global.defaultFontSize); + + return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation); + }, + + /** + * @private + */ + getLabelCapacity: function(exampleTime) { + var me = this; + + // pick the longest format (milliseconds) for guestimation + var format = me.options.time.displayFormats.millisecond; + var exampleLabel = me.tickFormatFunction(exampleTime, 0, [], format); + var tickLabelWidth = me.getLabelWidth(exampleLabel); + var innerWidth = me.isHorizontal() ? me.width : me.height; + var capacity = Math.floor(innerWidth / tickLabelWidth); + + return capacity > 0 ? capacity : 1; + } +}); + +// INTERNAL: static default options, registered in src/index.js +var _defaults$4 = defaultConfig$4; +scale_time._defaults = _defaults$4; + +var scales = { + category: scale_category, + linear: scale_linear, + logarithmic: scale_logarithmic, + radialLinear: scale_radialLinear, + time: scale_time +}; + +var FORMATS = { + datetime: 'MMM D, YYYY, h:mm:ss a', + millisecond: 'h:mm:ss.SSS a', + second: 'h:mm:ss a', + minute: 'h:mm a', + hour: 'hA', + day: 'MMM D', + week: 'll', + month: 'MMM YYYY', + quarter: '[Q]Q - YYYY', + year: 'YYYY' +}; + +core_adapters._date.override(typeof moment === 'function' ? { + _id: 'moment', // DEBUG ONLY + + formats: function() { + return FORMATS; + }, + + parse: function(value, format) { + if (typeof value === 'string' && typeof format === 'string') { + value = moment(value, format); + } else if (!(value instanceof moment)) { + value = moment(value); + } + return value.isValid() ? value.valueOf() : null; + }, + + format: function(time, format) { + return moment(time).format(format); + }, + + add: function(time, amount, unit) { + return moment(time).add(amount, unit).valueOf(); + }, + + diff: function(max, min, unit) { + return moment.duration(moment(max).diff(moment(min))).as(unit); + }, + + startOf: function(time, unit, weekday) { + time = moment(time); + if (unit === 'isoWeek') { + return time.isoWeekday(weekday).valueOf(); + } + return time.startOf(unit).valueOf(); + }, + + endOf: function(time, unit) { + return moment(time).endOf(unit).valueOf(); + }, + + // DEPRECATIONS + + /** + * Provided for backward compatibility with scale.getValueForPixel(). + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ + _create: function(time) { + return moment(time); + }, +} : {}); + +core_defaults._set('global', { plugins: { filler: { propagate: true @@ -11231,7 +13501,7 @@ function computeBoundary(source) { return target; } - if (typeof target === 'number' && isFinite(target)) { + if (helpers$1.isFinite(target)) { horizontal = scale.isHorizontal(); return { x: horizontal ? target : null, @@ -11303,7 +13573,7 @@ function drawArea(ctx, curve0, curve1, len0, len1) { // building first area curve (normal) ctx.moveTo(curve0[0].x, curve0[0].y); for (i = 1; i < len0; ++i) { - helpers.canvas.lineTo(ctx, curve0[i - 1], curve0[i]); + helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]); } // joining the two area curves @@ -11311,7 +13581,7 @@ function drawArea(ctx, curve0, curve1, len0, len1) { // building opposite area curve (reverse) for (i = len1 - 1; i > 0; --i) { - helpers.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true); + helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true); } } @@ -11360,7 +13630,7 @@ function doFill(ctx, points, mapper, view, color, loop) { ctx.fill(); } -module.exports = { +var plugin_filler = { id: 'filler', afterDatasetsUpdate: function(chart, options) { @@ -11410,27 +13680,20 @@ module.exports = { var view = el._view; var points = el._children || []; var mapper = meta.mapper; - var color = view.backgroundColor || defaults.global.defaultColor; + var color = view.backgroundColor || core_defaults.global.defaultColor; if (mapper && color && points.length) { - helpers.canvas.clipArea(ctx, chart.chartArea); + helpers$1.canvas.clipArea(ctx, chart.chartArea); doFill(ctx, points, mapper, view, color, el._loop); - helpers.canvas.unclipArea(ctx); + helpers$1.canvas.unclipArea(ctx); } } }; -},{"26":26,"41":41,"46":46}],52:[function(require,module,exports){ -'use strict'; +var noop$1 = helpers$1.noop; +var valueOrDefault$d = helpers$1.valueOrDefault; -var defaults = require(26); -var Element = require(27); -var helpers = require(46); -var layouts = require(31); - -var noop = helpers.noop; - -defaults._set('global', { +core_defaults._set('global', { legend: { display: true, position: 'top', @@ -11452,6 +13715,7 @@ defaults._set('global', { }, onHover: null, + onLeave: null, labels: { boxWidth: 40, @@ -11469,10 +13733,10 @@ defaults._set('global', { // lineWidth : generateLabels: function(chart) { var data = chart.data; - return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) { + return helpers$1.isArray(data.datasets) ? data.datasets.map(function(dataset, i) { return { text: dataset.label, - fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]), + fillStyle: (!helpers$1.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]), hidden: !chart.isDatasetVisible(i), lineCap: dataset.borderCapStyle, lineDash: dataset.borderDash, @@ -11507,27 +13771,32 @@ defaults._set('global', { /** * Helper function to get the box width based on the usePointStyle option - * @param labelopts {Object} the label options on the legend - * @param fontSize {Number} the label font size - * @return {Number} width of the color box area + * @param {object} labelopts - the label options on the legend + * @param {number} fontSize - the label font size + * @return {number} width of the color box area */ function getBoxWidth(labelOpts, fontSize) { - return labelOpts.usePointStyle ? - fontSize * Math.SQRT2 : + return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ? + fontSize : labelOpts.boxWidth; } /** * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required! */ -var Legend = Element.extend({ +var Legend = core_element.extend({ initialize: function(config) { - helpers.extend(this, config); + helpers$1.extend(this, config); // Contains hit boxes for each dataset (in dataset order) this.legendHitBoxes = []; + /** + * @private + */ + this._hoveredItem = null; + // Are we in doughnut mode which has a different data type this.doughnutMode = false; }, @@ -11536,7 +13805,7 @@ var Legend = Element.extend({ // Any function defined here is inherited by all legend types. // Any function can be extended by the legend type - beforeUpdate: noop, + beforeUpdate: noop$1, update: function(maxWidth, maxHeight, margins) { var me = this; @@ -11566,11 +13835,11 @@ var Legend = Element.extend({ return me.minSize; }, - afterUpdate: noop, + afterUpdate: noop$1, // - beforeSetDimensions: noop, + beforeSetDimensions: noop$1, setDimensions: function() { var me = this; // Set the unconstrained dimension before label rotation @@ -11599,15 +13868,15 @@ var Legend = Element.extend({ height: 0 }; }, - afterSetDimensions: noop, + afterSetDimensions: noop$1, // - beforeBuildLabels: noop, + beforeBuildLabels: noop$1, buildLabels: function() { var me = this; var labelOpts = me.options.labels || {}; - var legendItems = helpers.callback(labelOpts.generateLabels, [me.chart], me) || []; + var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || []; if (labelOpts.filter) { legendItems = legendItems.filter(function(item) { @@ -11621,11 +13890,11 @@ var Legend = Element.extend({ me.legendItems = legendItems; }, - afterBuildLabels: noop, + afterBuildLabels: noop$1, // - beforeFit: noop, + beforeFit: noop$1, fit: function() { var me = this; var opts = me.options; @@ -11634,12 +13903,8 @@ var Legend = Element.extend({ var ctx = me.ctx; - var globalDefault = defaults.global; - var valueOrDefault = helpers.valueOrDefault; - var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize); - var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle); - var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily); - var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily); + var labelFont = helpers$1.options._parseFont(labelOpts); + var fontSize = labelFont.size; // Reset hit boxes var hitboxes = me.legendHitBoxes = []; @@ -11657,25 +13922,25 @@ var Legend = Element.extend({ // Increase sizes here if (display) { - ctx.font = labelFont; + ctx.font = labelFont.string; if (isHorizontal) { // Labels // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one var lineWidths = me.lineWidths = [0]; - var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0; + var totalHeight = 0; ctx.textAlign = 'left'; ctx.textBaseline = 'top'; - helpers.each(me.legendItems, function(legendItem, i) { + helpers$1.each(me.legendItems, function(legendItem, i) { var boxWidth = getBoxWidth(labelOpts, fontSize); var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; - if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) { - totalHeight += fontSize + (labelOpts.padding); - lineWidths[lineWidths.length] = me.left; + if (i === 0 || lineWidths[lineWidths.length - 1] + width + labelOpts.padding > minSize.width) { + totalHeight += fontSize + labelOpts.padding; + lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = labelOpts.padding; } // Store the hitbox width and height here. Final position will be updated in `draw` @@ -11699,12 +13964,12 @@ var Legend = Element.extend({ var currentColHeight = 0; var itemHeight = fontSize + vPadding; - helpers.each(me.legendItems, function(legendItem, i) { + helpers$1.each(me.legendItems, function(legendItem, i) { var boxWidth = getBoxWidth(labelOpts, fontSize); var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; // If too tall, go to new column - if (currentColHeight + itemHeight > minSize.height) { + if (i > 0 && currentColHeight + itemHeight > minSize.height - vPadding) { totalWidth += currentColWidth + labelOpts.padding; columnWidths.push(currentColWidth); // previous column width @@ -11734,7 +13999,7 @@ var Legend = Element.extend({ me.width = minSize.width; me.height = minSize.height; }, - afterFit: noop, + afterFit: noop$1, // Shared Methods isHorizontal: function() { @@ -11746,19 +14011,17 @@ var Legend = Element.extend({ var me = this; var opts = me.options; var labelOpts = opts.labels; - var globalDefault = defaults.global; - var lineDefault = globalDefault.elements.line; + var globalDefaults = core_defaults.global; + var defaultColor = globalDefaults.defaultColor; + var lineDefault = globalDefaults.elements.line; var legendWidth = me.width; var lineWidths = me.lineWidths; if (opts.display) { var ctx = me.ctx; - var valueOrDefault = helpers.valueOrDefault; - var fontColor = valueOrDefault(labelOpts.fontColor, globalDefault.defaultFontColor); - var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize); - var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle); - var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily); - var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily); + var fontColor = valueOrDefault$d(labelOpts.fontColor, globalDefaults.defaultFontColor); + var labelFont = helpers$1.options._parseFont(labelOpts); + var fontSize = labelFont.size; var cursor; // Canvas setup @@ -11767,7 +14030,7 @@ var Legend = Element.extend({ ctx.lineWidth = 0.5; ctx.strokeStyle = fontColor; // for strikethrough effect ctx.fillStyle = fontColor; // render in correct colour - ctx.font = labelFont; + ctx.font = labelFont.string; var boxWidth = getBoxWidth(labelOpts, fontSize); var hitboxes = me.legendHitBoxes; @@ -11781,32 +14044,31 @@ var Legend = Element.extend({ // Set the ctx for the box ctx.save(); - ctx.fillStyle = valueOrDefault(legendItem.fillStyle, globalDefault.defaultColor); - ctx.lineCap = valueOrDefault(legendItem.lineCap, lineDefault.borderCapStyle); - ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, lineDefault.borderDashOffset); - ctx.lineJoin = valueOrDefault(legendItem.lineJoin, lineDefault.borderJoinStyle); - ctx.lineWidth = valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth); - ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, globalDefault.defaultColor); - var isLineWidthZero = (valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth) === 0); + var lineWidth = valueOrDefault$d(legendItem.lineWidth, lineDefault.borderWidth); + ctx.fillStyle = valueOrDefault$d(legendItem.fillStyle, defaultColor); + ctx.lineCap = valueOrDefault$d(legendItem.lineCap, lineDefault.borderCapStyle); + ctx.lineDashOffset = valueOrDefault$d(legendItem.lineDashOffset, lineDefault.borderDashOffset); + ctx.lineJoin = valueOrDefault$d(legendItem.lineJoin, lineDefault.borderJoinStyle); + ctx.lineWidth = lineWidth; + ctx.strokeStyle = valueOrDefault$d(legendItem.strokeStyle, defaultColor); if (ctx.setLineDash) { // IE 9 and 10 do not support line dash - ctx.setLineDash(valueOrDefault(legendItem.lineDash, lineDefault.borderDash)); + ctx.setLineDash(valueOrDefault$d(legendItem.lineDash, lineDefault.borderDash)); } if (opts.labels && opts.labels.usePointStyle) { // Recalculate x and y for drawPoint() because its expecting // x and y to be center of figure (instead of top left) - var radius = fontSize * Math.SQRT2 / 2; - var offSet = radius / Math.SQRT2; - var centerX = x + offSet; - var centerY = y + offSet; + var radius = boxWidth * Math.SQRT2 / 2; + var centerX = x + boxWidth / 2; + var centerY = y + fontSize / 2; // Draw pointStyle as legend symbol - helpers.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY); + helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY); } else { // Draw box as legend symbol - if (!isLineWidthZero) { + if (lineWidth !== 0) { ctx.strokeRect(x, y, boxWidth, fontSize); } ctx.fillRect(x, y, boxWidth, fontSize); @@ -11835,7 +14097,7 @@ var Legend = Element.extend({ var isHorizontal = me.isHorizontal(); if (isHorizontal) { cursor = { - x: me.left + ((legendWidth - lineWidths[0]) / 2), + x: me.left + ((legendWidth - lineWidths[0]) / 2) + labelOpts.padding, y: me.top + labelOpts.padding, line: 0 }; @@ -11848,19 +14110,22 @@ var Legend = Element.extend({ } var itemHeight = fontSize + labelOpts.padding; - helpers.each(me.legendItems, function(legendItem, i) { + helpers$1.each(me.legendItems, function(legendItem, i) { var textWidth = ctx.measureText(legendItem.text).width; var width = boxWidth + (fontSize / 2) + textWidth; var x = cursor.x; var y = cursor.y; + // Use (me.left + me.minSize.width) and (me.top + me.minSize.height) + // instead of me.right and me.bottom because me.width and me.height + // may have been changed since me.minSize was calculated if (isHorizontal) { - if (x + width >= legendWidth) { + if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) { y = cursor.y += itemHeight; cursor.line++; - x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2); + x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2) + labelOpts.padding; } - } else if (y + itemHeight > me.bottom) { + } else if (i > 0 && y + itemHeight > me.top + me.minSize.height) { x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding; y = cursor.y = me.top + labelOpts.padding; cursor.line++; @@ -11875,7 +14140,7 @@ var Legend = Element.extend({ fillText(x, y, legendItem, textWidth); if (isHorizontal) { - cursor.x += width + (labelOpts.padding); + cursor.x += width + labelOpts.padding; } else { cursor.y += itemHeight; } @@ -11884,20 +14149,42 @@ var Legend = Element.extend({ } }, + /** + * @private + */ + _getLegendItemAt: function(x, y) { + var me = this; + var i, hitBox, lh; + + if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) { + // See if we are touching one of the dataset boxes + lh = me.legendHitBoxes; + for (i = 0; i < lh.length; ++i) { + hitBox = lh[i]; + + if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) { + // Touching an element + return me.legendItems[i]; + } + } + } + + return null; + }, + /** * Handle an event * @private * @param {IEvent} event - The event to handle - * @return {Boolean} true if a change occured */ handleEvent: function(e) { var me = this; var opts = me.options; var type = e.type === 'mouseup' ? 'click' : e.type; - var changed = false; + var hoveredItem; if (type === 'mousemove') { - if (!opts.onHover) { + if (!opts.onHover && !opts.onLeave) { return; } } else if (type === 'click') { @@ -11909,33 +14196,26 @@ var Legend = Element.extend({ } // Chart event already has relative position in it - var x = e.x; - var y = e.y; + hoveredItem = me._getLegendItemAt(e.x, e.y); - if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) { - // See if we are touching one of the dataset boxes - var lh = me.legendHitBoxes; - for (var i = 0; i < lh.length; ++i) { - var hitBox = lh[i]; - - if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) { - // Touching an element - if (type === 'click') { - // use e.native for backwards compatibility - opts.onClick.call(me, e.native, me.legendItems[i]); - changed = true; - break; - } else if (type === 'mousemove') { - // use e.native for backwards compatibility - opts.onHover.call(me, e.native, me.legendItems[i]); - changed = true; - break; - } + if (type === 'click') { + if (hoveredItem && opts.onClick) { + // use e.native for backwards compatibility + opts.onClick.call(me, e.native, hoveredItem); + } + } else { + if (opts.onLeave && hoveredItem !== me._hoveredItem) { + if (me._hoveredItem) { + opts.onLeave.call(me, e.native, me._hoveredItem); } + me._hoveredItem = hoveredItem; + } + + if (opts.onHover && hoveredItem) { + // use e.native for backwards compatibility + opts.onHover.call(me, e.native, hoveredItem); } } - - return changed; } }); @@ -11946,12 +14226,12 @@ function createNewLegendAndAttach(chart, legendOpts) { chart: chart }); - layouts.configure(chart, legend, legendOpts); - layouts.addBox(chart, legend); + core_layouts.configure(chart, legend, legendOpts); + core_layouts.addBox(chart, legend); chart.legend = legend; } -module.exports = { +var plugin_legend = { id: 'legend', /** @@ -11976,16 +14256,16 @@ module.exports = { var legend = chart.legend; if (legendOpts) { - helpers.mergeIf(legendOpts, defaults.global.legend); + helpers$1.mergeIf(legendOpts, core_defaults.global.legend); if (legend) { - layouts.configure(chart, legend, legendOpts); + core_layouts.configure(chart, legend, legendOpts); legend.options = legendOpts; } else { createNewLegendAndAttach(chart, legendOpts); } } else if (legend) { - layouts.removeBox(chart, legend); + core_layouts.removeBox(chart, legend); delete chart.legend; } }, @@ -11998,22 +14278,13 @@ module.exports = { } }; -},{"26":26,"27":27,"31":31,"46":46}],53:[function(require,module,exports){ -'use strict'; +var noop$2 = helpers$1.noop; -var defaults = require(26); -var Element = require(27); -var helpers = require(46); -var layouts = require(31); - -var noop = helpers.noop; - -defaults._set('global', { +core_defaults._set('global', { title: { display: false, fontStyle: 'bold', fullWidth: true, - lineHeight: 1.2, padding: 10, position: 'top', text: '', @@ -12024,10 +14295,10 @@ defaults._set('global', { /** * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required! */ -var Title = Element.extend({ +var Title = core_element.extend({ initialize: function(config) { var me = this; - helpers.extend(me, config); + helpers$1.extend(me, config); // Contains hit boxes for each dataset (in dataset order) me.legendHitBoxes = []; @@ -12035,7 +14306,7 @@ var Title = Element.extend({ // These methods are ordered by lifecycle. Utilities then follow. - beforeUpdate: noop, + beforeUpdate: noop$2, update: function(maxWidth, maxHeight, margins) { var me = this; @@ -12066,11 +14337,11 @@ var Title = Element.extend({ return me.minSize; }, - afterUpdate: noop, + afterUpdate: noop$2, // - beforeSetDimensions: noop, + beforeSetDimensions: noop$2, setDimensions: function() { var me = this; // Set the unconstrained dimension before label rotation @@ -12099,27 +14370,25 @@ var Title = Element.extend({ height: 0 }; }, - afterSetDimensions: noop, + afterSetDimensions: noop$2, // - beforeBuildLabels: noop, - buildLabels: noop, - afterBuildLabels: noop, + beforeBuildLabels: noop$2, + buildLabels: noop$2, + afterBuildLabels: noop$2, // - beforeFit: noop, + beforeFit: noop$2, fit: function() { var me = this; - var valueOrDefault = helpers.valueOrDefault; var opts = me.options; var display = opts.display; - var fontSize = valueOrDefault(opts.fontSize, defaults.global.defaultFontSize); var minSize = me.minSize; - var lineCount = helpers.isArray(opts.text) ? opts.text.length : 1; - var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize); - var textSize = display ? (lineCount * lineHeight) + (opts.padding * 2) : 0; + var lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1; + var fontOpts = helpers$1.options._parseFont(opts); + var textSize = display ? (lineCount * fontOpts.lineHeight) + (opts.padding * 2) : 0; if (me.isHorizontal()) { minSize.width = me.maxWidth; // fill all the width @@ -12133,7 +14402,7 @@ var Title = Element.extend({ me.height = minSize.height; }, - afterFit: noop, + afterFit: noop$2, // Shared Methods isHorizontal: function() { @@ -12145,16 +14414,11 @@ var Title = Element.extend({ draw: function() { var me = this; var ctx = me.ctx; - var valueOrDefault = helpers.valueOrDefault; var opts = me.options; - var globalDefaults = defaults.global; if (opts.display) { - var fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize); - var fontStyle = valueOrDefault(opts.fontStyle, globalDefaults.defaultFontStyle); - var fontFamily = valueOrDefault(opts.fontFamily, globalDefaults.defaultFontFamily); - var titleFont = helpers.fontString(fontSize, fontStyle, fontFamily); - var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize); + var fontOpts = helpers$1.options._parseFont(opts); + var lineHeight = fontOpts.lineHeight; var offset = lineHeight / 2 + opts.padding; var rotation = 0; var top = me.top; @@ -12163,8 +14427,8 @@ var Title = Element.extend({ var right = me.right; var maxWidth, titleX, titleY; - ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour - ctx.font = titleFont; + ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour + ctx.font = fontOpts.string; // Horizontal if (me.isHorizontal()) { @@ -12185,7 +14449,7 @@ var Title = Element.extend({ ctx.textBaseline = 'middle'; var text = opts.text; - if (helpers.isArray(text)) { + if (helpers$1.isArray(text)) { var y = 0; for (var i = 0; i < text.length; ++i) { ctx.fillText(text[i], 0, y, maxWidth); @@ -12207,12 +14471,12 @@ function createNewTitleBlockAndAttach(chart, titleOpts) { chart: chart }); - layouts.configure(chart, title, titleOpts); - layouts.addBox(chart, title); + core_layouts.configure(chart, title, titleOpts); + core_layouts.addBox(chart, title); chart.titleBlock = title; } -module.exports = { +var plugin_title = { id: 'title', /** @@ -12237,2220 +14501,180 @@ module.exports = { var titleBlock = chart.titleBlock; if (titleOpts) { - helpers.mergeIf(titleOpts, defaults.global.title); + helpers$1.mergeIf(titleOpts, core_defaults.global.title); if (titleBlock) { - layouts.configure(chart, titleBlock, titleOpts); + core_layouts.configure(chart, titleBlock, titleOpts); titleBlock.options = titleOpts; } else { createNewTitleBlockAndAttach(chart, titleOpts); } } else if (titleBlock) { - layouts.removeBox(chart, titleBlock); + core_layouts.removeBox(chart, titleBlock); delete chart.titleBlock; } } }; -},{"26":26,"27":27,"31":31,"46":46}],54:[function(require,module,exports){ -'use strict'; - -var Scale = require(33); -var scaleService = require(34); - -module.exports = function() { - - // Default config for a category scale - var defaultConfig = { - position: 'bottom' - }; - - var DatasetScale = Scale.extend({ - /** - * Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those - * else fall back to data.labels - * @private - */ - getLabels: function() { - var data = this.chart.data; - return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels; - }, - - determineDataLimits: function() { - var me = this; - var labels = me.getLabels(); - me.minIndex = 0; - me.maxIndex = labels.length - 1; - var findIndex; - - if (me.options.ticks.min !== undefined) { - // user specified min value - findIndex = labels.indexOf(me.options.ticks.min); - me.minIndex = findIndex !== -1 ? findIndex : me.minIndex; - } - - if (me.options.ticks.max !== undefined) { - // user specified max value - findIndex = labels.indexOf(me.options.ticks.max); - me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex; - } - - me.min = labels[me.minIndex]; - me.max = labels[me.maxIndex]; - }, - - buildTicks: function() { - var me = this; - var labels = me.getLabels(); - // If we are viewing some subset of labels, slice the original array - me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1); - }, - - getLabelForIndex: function(index, datasetIndex) { - var me = this; - var data = me.chart.data; - var isHorizontal = me.isHorizontal(); - - if (data.yLabels && !isHorizontal) { - return me.getRightValue(data.datasets[datasetIndex].data[index]); - } - return me.ticks[index - me.minIndex]; - }, - - // Used to get data value locations. Value can either be an index or a numerical value - getPixelForValue: function(value, index) { - var me = this; - var offset = me.options.offset; - // 1 is added because we need the length but we have the indexes - var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1); - - // If value is a data object, then index is the index in the data array, - // not the index of the scale. We need to change that. - var valueCategory; - if (value !== undefined && value !== null) { - valueCategory = me.isHorizontal() ? value.x : value.y; - } - if (valueCategory !== undefined || (value !== undefined && isNaN(index))) { - var labels = me.getLabels(); - value = valueCategory || value; - var idx = labels.indexOf(value); - index = idx !== -1 ? idx : index; - } - - if (me.isHorizontal()) { - var valueWidth = me.width / offsetAmt; - var widthOffset = (valueWidth * (index - me.minIndex)); - - if (offset) { - widthOffset += (valueWidth / 2); - } - - return me.left + Math.round(widthOffset); - } - var valueHeight = me.height / offsetAmt; - var heightOffset = (valueHeight * (index - me.minIndex)); - - if (offset) { - heightOffset += (valueHeight / 2); - } - - return me.top + Math.round(heightOffset); - }, - getPixelForTick: function(index) { - return this.getPixelForValue(this.ticks[index], index + this.minIndex, null); - }, - getValueForPixel: function(pixel) { - var me = this; - var offset = me.options.offset; - var value; - var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1); - var horz = me.isHorizontal(); - var valueDimension = (horz ? me.width : me.height) / offsetAmt; - - pixel -= horz ? me.left : me.top; - - if (offset) { - pixel -= (valueDimension / 2); - } - - if (pixel <= 0) { - value = 0; - } else { - value = Math.round(pixel / valueDimension); - } - - return value + me.minIndex; - }, - getBasePixel: function() { - return this.bottom; - } - }); - - scaleService.registerScaleType('category', DatasetScale, defaultConfig); -}; - -},{"33":33,"34":34}],55:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var helpers = require(46); -var scaleService = require(34); -var Ticks = require(35); - -module.exports = function(Chart) { - - var defaultConfig = { - position: 'left', - ticks: { - callback: Ticks.formatters.linear - } - }; - - var LinearScale = Chart.LinearScaleBase.extend({ - - determineDataLimits: function() { - var me = this; - var opts = me.options; - var chart = me.chart; - var data = chart.data; - var datasets = data.datasets; - var isHorizontal = me.isHorizontal(); - var DEFAULT_MIN = 0; - var DEFAULT_MAX = 1; - - function IDMatches(meta) { - return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id; - } - - // First Calculate the range - me.min = null; - me.max = null; - - var hasStacks = opts.stacked; - if (hasStacks === undefined) { - helpers.each(datasets, function(dataset, datasetIndex) { - if (hasStacks) { - return; - } - - var meta = chart.getDatasetMeta(datasetIndex); - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) && - meta.stack !== undefined) { - hasStacks = true; - } - }); - } - - if (opts.stacked || hasStacks) { - var valuesPerStack = {}; - - helpers.each(datasets, function(dataset, datasetIndex) { - var meta = chart.getDatasetMeta(datasetIndex); - var key = [ - meta.type, - // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined - ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''), - meta.stack - ].join('.'); - - if (valuesPerStack[key] === undefined) { - valuesPerStack[key] = { - positiveValues: [], - negativeValues: [] - }; - } - - // Store these per type - var positiveValues = valuesPerStack[key].positiveValues; - var negativeValues = valuesPerStack[key].negativeValues; - - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { - helpers.each(dataset.data, function(rawValue, index) { - var value = +me.getRightValue(rawValue); - if (isNaN(value) || meta.data[index].hidden) { - return; - } - - positiveValues[index] = positiveValues[index] || 0; - negativeValues[index] = negativeValues[index] || 0; - - if (opts.relativePoints) { - positiveValues[index] = 100; - } else if (value < 0) { - negativeValues[index] += value; - } else { - positiveValues[index] += value; - } - }); - } - }); - - helpers.each(valuesPerStack, function(valuesForType) { - var values = valuesForType.positiveValues.concat(valuesForType.negativeValues); - var minVal = helpers.min(values); - var maxVal = helpers.max(values); - me.min = me.min === null ? minVal : Math.min(me.min, minVal); - me.max = me.max === null ? maxVal : Math.max(me.max, maxVal); - }); - - } else { - helpers.each(datasets, function(dataset, datasetIndex) { - var meta = chart.getDatasetMeta(datasetIndex); - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { - helpers.each(dataset.data, function(rawValue, index) { - var value = +me.getRightValue(rawValue); - if (isNaN(value) || meta.data[index].hidden) { - return; - } - - if (me.min === null) { - me.min = value; - } else if (value < me.min) { - me.min = value; - } - - if (me.max === null) { - me.max = value; - } else if (value > me.max) { - me.max = value; - } - }); - } - }); - } - - me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN; - me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX; - - // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero - this.handleTickRangeOptions(); - }, - getTickLimit: function() { - var maxTicks; - var me = this; - var tickOpts = me.options.ticks; - - if (me.isHorizontal()) { - maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.width / 50)); - } else { - // The factor of 2 used to scale the font size has been experimentally determined. - var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, defaults.global.defaultFontSize); - maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.height / (2 * tickFontSize))); - } - - return maxTicks; - }, - // Called after the ticks are built. We need - handleDirectionalChanges: function() { - if (!this.isHorizontal()) { - // We are in a vertical orientation. The top value is the highest. So reverse the array - this.ticks.reverse(); - } - }, - getLabelForIndex: function(index, datasetIndex) { - return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); - }, - // Utils - getPixelForValue: function(value) { - // This must be called after fit has been run so that - // this.left, this.top, this.right, and this.bottom have been defined - var me = this; - var start = me.start; - - var rightValue = +me.getRightValue(value); - var pixel; - var range = me.end - start; - - if (me.isHorizontal()) { - pixel = me.left + (me.width / range * (rightValue - start)); - } else { - pixel = me.bottom - (me.height / range * (rightValue - start)); - } - return pixel; - }, - getValueForPixel: function(pixel) { - var me = this; - var isHorizontal = me.isHorizontal(); - var innerDimension = isHorizontal ? me.width : me.height; - var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension; - return me.start + ((me.end - me.start) * offset); - }, - getPixelForTick: function(index) { - return this.getPixelForValue(this.ticksAsNumbers[index]); - } - }); - - scaleService.registerScaleType('linear', LinearScale, defaultConfig); -}; - -},{"26":26,"34":34,"35":35,"46":46}],56:[function(require,module,exports){ -'use strict'; - -var helpers = require(46); -var Scale = require(33); +var plugins = {}; +var filler = plugin_filler; +var legend = plugin_legend; +var title = plugin_title; +plugins.filler = filler; +plugins.legend = legend; +plugins.title = title; /** - * Generate a set of linear ticks - * @param generationOptions the options used to generate the ticks - * @param dataRange the range of the data - * @returns {Array} array of tick values + * @namespace Chart */ -function generateTicks(generationOptions, dataRange) { - var ticks = []; - // To get a "nice" value for the tick spacing, we will use the appropriately named - // "nice number" algorithm. See http://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks - // for details. - var factor; - var precision; - var spacing; - if (generationOptions.stepSize && generationOptions.stepSize > 0) { - spacing = generationOptions.stepSize; - } else { - var niceRange = helpers.niceNum(dataRange.max - dataRange.min, false); - spacing = helpers.niceNum(niceRange / (generationOptions.maxTicks - 1), true); - - precision = generationOptions.precision; - if (precision !== undefined) { - // If the user specified a precision, round to that number of decimal places - factor = Math.pow(10, precision); - spacing = Math.ceil(spacing * factor) / factor; - } - } - var niceMin = Math.floor(dataRange.min / spacing) * spacing; - var niceMax = Math.ceil(dataRange.max / spacing) * spacing; - - // If min, max and stepSize is set and they make an evenly spaced scale use it. - if (!helpers.isNullOrUndef(generationOptions.min) && !helpers.isNullOrUndef(generationOptions.max) && generationOptions.stepSize) { - // If very close to our whole number, use it. - if (helpers.almostWhole((generationOptions.max - generationOptions.min) / generationOptions.stepSize, spacing / 1000)) { - niceMin = generationOptions.min; - niceMax = generationOptions.max; - } - } - - var numSpaces = (niceMax - niceMin) / spacing; - // If very close to our rounded value, use it. - if (helpers.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) { - numSpaces = Math.round(numSpaces); - } else { - numSpaces = Math.ceil(numSpaces); - } - - precision = 1; - if (spacing < 1) { - precision = Math.pow(10, 1 - Math.floor(helpers.log10(spacing))); - niceMin = Math.round(niceMin * precision) / precision; - niceMax = Math.round(niceMax * precision) / precision; - } - ticks.push(generationOptions.min !== undefined ? generationOptions.min : niceMin); - for (var j = 1; j < numSpaces; ++j) { - ticks.push(Math.round((niceMin + j * spacing) * precision) / precision); - } - ticks.push(generationOptions.max !== undefined ? generationOptions.max : niceMax); - - return ticks; -} - -module.exports = function(Chart) { - - var noop = helpers.noop; - - Chart.LinearScaleBase = Scale.extend({ - getRightValue: function(value) { - if (typeof value === 'string') { - return +value; - } - return Scale.prototype.getRightValue.call(this, value); - }, - - handleTickRangeOptions: function() { - var me = this; - var opts = me.options; - var tickOpts = opts.ticks; - - // If we are forcing it to begin at 0, but 0 will already be rendered on the chart, - // do nothing since that would make the chart weird. If the user really wants a weird chart - // axis, they can manually override it - if (tickOpts.beginAtZero) { - var minSign = helpers.sign(me.min); - var maxSign = helpers.sign(me.max); - - if (minSign < 0 && maxSign < 0) { - // move the top up to 0 - me.max = 0; - } else if (minSign > 0 && maxSign > 0) { - // move the bottom down to 0 - me.min = 0; - } - } - - var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined; - var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined; - - if (tickOpts.min !== undefined) { - me.min = tickOpts.min; - } else if (tickOpts.suggestedMin !== undefined) { - if (me.min === null) { - me.min = tickOpts.suggestedMin; - } else { - me.min = Math.min(me.min, tickOpts.suggestedMin); - } - } - - if (tickOpts.max !== undefined) { - me.max = tickOpts.max; - } else if (tickOpts.suggestedMax !== undefined) { - if (me.max === null) { - me.max = tickOpts.suggestedMax; - } else { - me.max = Math.max(me.max, tickOpts.suggestedMax); - } - } - - if (setMin !== setMax) { - // We set the min or the max but not both. - // So ensure that our range is good - // Inverted or 0 length range can happen when - // ticks.min is set, and no datasets are visible - if (me.min >= me.max) { - if (setMin) { - me.max = me.min + 1; - } else { - me.min = me.max - 1; - } - } - } - - if (me.min === me.max) { - me.max++; - - if (!tickOpts.beginAtZero) { - me.min--; - } - } - }, - getTickLimit: noop, - handleDirectionalChanges: noop, - - buildTicks: function() { - var me = this; - var opts = me.options; - var tickOpts = opts.ticks; - - // Figure out what the max number of ticks we can support it is based on the size of - // the axis area. For now, we say that the minimum tick spacing in pixels must be 50 - // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on - // the graph. Make sure we always have at least 2 ticks - var maxTicks = me.getTickLimit(); - maxTicks = Math.max(2, maxTicks); - - var numericGeneratorOptions = { - maxTicks: maxTicks, - min: tickOpts.min, - max: tickOpts.max, - precision: tickOpts.precision, - stepSize: helpers.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize) - }; - var ticks = me.ticks = generateTicks(numericGeneratorOptions, me); - - me.handleDirectionalChanges(); - - // At this point, we need to update our max and min given the tick values since we have expanded the - // range of the scale - me.max = helpers.max(ticks); - me.min = helpers.min(ticks); - - if (tickOpts.reverse) { - ticks.reverse(); - - me.start = me.max; - me.end = me.min; - } else { - me.start = me.min; - me.end = me.max; - } - }, - convertTicksToLabels: function() { - var me = this; - me.ticksAsNumbers = me.ticks.slice(); - me.zeroLineIndex = me.ticks.indexOf(0); - - Scale.prototype.convertTicksToLabels.call(me); - } - }); -}; - -},{"33":33,"46":46}],57:[function(require,module,exports){ -'use strict'; - -var helpers = require(46); -var Scale = require(33); -var scaleService = require(34); -var Ticks = require(35); - -/** - * Generate a set of logarithmic ticks - * @param generationOptions the options used to generate the ticks - * @param dataRange the range of the data - * @returns {Array} array of tick values - */ -function generateTicks(generationOptions, dataRange) { - var ticks = []; - var valueOrDefault = helpers.valueOrDefault; - - // Figure out what the max number of ticks we can support it is based on the size of - // the axis area. For now, we say that the minimum tick spacing in pixels must be 50 - // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on - // the graph - var tickVal = valueOrDefault(generationOptions.min, Math.pow(10, Math.floor(helpers.log10(dataRange.min)))); - - var endExp = Math.floor(helpers.log10(dataRange.max)); - var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp)); - var exp, significand; - - if (tickVal === 0) { - exp = Math.floor(helpers.log10(dataRange.minNotZero)); - significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp)); - - ticks.push(tickVal); - tickVal = significand * Math.pow(10, exp); - } else { - exp = Math.floor(helpers.log10(tickVal)); - significand = Math.floor(tickVal / Math.pow(10, exp)); - } - var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1; - - do { - ticks.push(tickVal); - - ++significand; - if (significand === 10) { - significand = 1; - ++exp; - precision = exp >= 0 ? 1 : precision; - } - - tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision; - } while (exp < endExp || (exp === endExp && significand < endSignificand)); - - var lastTick = valueOrDefault(generationOptions.max, tickVal); - ticks.push(lastTick); - - return ticks; -} - - -module.exports = function(Chart) { - - var defaultConfig = { - position: 'left', - - // label settings - ticks: { - callback: Ticks.formatters.logarithmic - } - }; - - var LogarithmicScale = Scale.extend({ - determineDataLimits: function() { - var me = this; - var opts = me.options; - var chart = me.chart; - var data = chart.data; - var datasets = data.datasets; - var isHorizontal = me.isHorizontal(); - function IDMatches(meta) { - return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id; - } - - // Calculate Range - me.min = null; - me.max = null; - me.minNotZero = null; - - var hasStacks = opts.stacked; - if (hasStacks === undefined) { - helpers.each(datasets, function(dataset, datasetIndex) { - if (hasStacks) { - return; - } - - var meta = chart.getDatasetMeta(datasetIndex); - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) && - meta.stack !== undefined) { - hasStacks = true; - } - }); - } - - if (opts.stacked || hasStacks) { - var valuesPerStack = {}; - - helpers.each(datasets, function(dataset, datasetIndex) { - var meta = chart.getDatasetMeta(datasetIndex); - var key = [ - meta.type, - // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined - ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''), - meta.stack - ].join('.'); - - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { - if (valuesPerStack[key] === undefined) { - valuesPerStack[key] = []; - } - - helpers.each(dataset.data, function(rawValue, index) { - var values = valuesPerStack[key]; - var value = +me.getRightValue(rawValue); - // invalid, hidden and negative values are ignored - if (isNaN(value) || meta.data[index].hidden || value < 0) { - return; - } - values[index] = values[index] || 0; - values[index] += value; - }); - } - }); - - helpers.each(valuesPerStack, function(valuesForType) { - if (valuesForType.length > 0) { - var minVal = helpers.min(valuesForType); - var maxVal = helpers.max(valuesForType); - me.min = me.min === null ? minVal : Math.min(me.min, minVal); - me.max = me.max === null ? maxVal : Math.max(me.max, maxVal); - } - }); - - } else { - helpers.each(datasets, function(dataset, datasetIndex) { - var meta = chart.getDatasetMeta(datasetIndex); - if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) { - helpers.each(dataset.data, function(rawValue, index) { - var value = +me.getRightValue(rawValue); - // invalid, hidden and negative values are ignored - if (isNaN(value) || meta.data[index].hidden || value < 0) { - return; - } - - if (me.min === null) { - me.min = value; - } else if (value < me.min) { - me.min = value; - } - - if (me.max === null) { - me.max = value; - } else if (value > me.max) { - me.max = value; - } - - if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) { - me.minNotZero = value; - } - }); - } - }); - } - - // Common base implementation to handle ticks.min, ticks.max - this.handleTickRangeOptions(); - }, - handleTickRangeOptions: function() { - var me = this; - var opts = me.options; - var tickOpts = opts.ticks; - var valueOrDefault = helpers.valueOrDefault; - var DEFAULT_MIN = 1; - var DEFAULT_MAX = 10; - - me.min = valueOrDefault(tickOpts.min, me.min); - me.max = valueOrDefault(tickOpts.max, me.max); - - if (me.min === me.max) { - if (me.min !== 0 && me.min !== null) { - me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1); - me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1); - } else { - me.min = DEFAULT_MIN; - me.max = DEFAULT_MAX; - } - } - if (me.min === null) { - me.min = Math.pow(10, Math.floor(helpers.log10(me.max)) - 1); - } - if (me.max === null) { - me.max = me.min !== 0 - ? Math.pow(10, Math.floor(helpers.log10(me.min)) + 1) - : DEFAULT_MAX; - } - if (me.minNotZero === null) { - if (me.min > 0) { - me.minNotZero = me.min; - } else if (me.max < 1) { - me.minNotZero = Math.pow(10, Math.floor(helpers.log10(me.max))); - } else { - me.minNotZero = DEFAULT_MIN; - } - } - }, - buildTicks: function() { - var me = this; - var opts = me.options; - var tickOpts = opts.ticks; - var reverse = !me.isHorizontal(); - - var generationOptions = { - min: tickOpts.min, - max: tickOpts.max - }; - var ticks = me.ticks = generateTicks(generationOptions, me); - - // At this point, we need to update our max and min given the tick values since we have expanded the - // range of the scale - me.max = helpers.max(ticks); - me.min = helpers.min(ticks); - - if (tickOpts.reverse) { - reverse = !reverse; - me.start = me.max; - me.end = me.min; - } else { - me.start = me.min; - me.end = me.max; - } - if (reverse) { - ticks.reverse(); - } - }, - convertTicksToLabels: function() { - this.tickValues = this.ticks.slice(); - - Scale.prototype.convertTicksToLabels.call(this); - }, - // Get the correct tooltip label - getLabelForIndex: function(index, datasetIndex) { - return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); - }, - getPixelForTick: function(index) { - return this.getPixelForValue(this.tickValues[index]); - }, - /** - * Returns the value of the first tick. - * @param {Number} value - The minimum not zero value. - * @return {Number} The first tick value. - * @private - */ - _getFirstTickValue: function(value) { - var exp = Math.floor(helpers.log10(value)); - var significand = Math.floor(value / Math.pow(10, exp)); - - return significand * Math.pow(10, exp); - }, - getPixelForValue: function(value) { - var me = this; - var reverse = me.options.ticks.reverse; - var log10 = helpers.log10; - var firstTickValue = me._getFirstTickValue(me.minNotZero); - var offset = 0; - var innerDimension, pixel, start, end, sign; - - value = +me.getRightValue(value); - if (reverse) { - start = me.end; - end = me.start; - sign = -1; - } else { - start = me.start; - end = me.end; - sign = 1; - } - if (me.isHorizontal()) { - innerDimension = me.width; - pixel = reverse ? me.right : me.left; - } else { - innerDimension = me.height; - sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0) - pixel = reverse ? me.top : me.bottom; - } - if (value !== start) { - if (start === 0) { // include zero tick - offset = helpers.getValueOrDefault( - me.options.ticks.fontSize, - Chart.defaults.global.defaultFontSize - ); - innerDimension -= offset; - start = firstTickValue; - } - if (value !== 0) { - offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start)); - } - pixel += sign * offset; - } - return pixel; - }, - getValueForPixel: function(pixel) { - var me = this; - var reverse = me.options.ticks.reverse; - var log10 = helpers.log10; - var firstTickValue = me._getFirstTickValue(me.minNotZero); - var innerDimension, start, end, value; - - if (reverse) { - start = me.end; - end = me.start; - } else { - start = me.start; - end = me.end; - } - if (me.isHorizontal()) { - innerDimension = me.width; - value = reverse ? me.right - pixel : pixel - me.left; - } else { - innerDimension = me.height; - value = reverse ? pixel - me.top : me.bottom - pixel; - } - if (value !== start) { - if (start === 0) { // include zero tick - var offset = helpers.getValueOrDefault( - me.options.ticks.fontSize, - Chart.defaults.global.defaultFontSize - ); - value -= offset; - innerDimension -= offset; - start = firstTickValue; - } - value *= log10(end) - log10(start); - value /= innerDimension; - value = Math.pow(10, log10(start) + value); - } - return value; - } - }); - - scaleService.registerScaleType('logarithmic', LogarithmicScale, defaultConfig); -}; - -},{"33":33,"34":34,"35":35,"46":46}],58:[function(require,module,exports){ -'use strict'; - -var defaults = require(26); -var helpers = require(46); -var scaleService = require(34); -var Ticks = require(35); - -module.exports = function(Chart) { - - var globalDefaults = defaults.global; - - var defaultConfig = { - display: true, - - // Boolean - Whether to animate scaling the chart from the centre - animate: true, - position: 'chartArea', - - angleLines: { - display: true, - color: 'rgba(0, 0, 0, 0.1)', - lineWidth: 1 - }, - - gridLines: { - circular: false - }, - - // label settings - ticks: { - // Boolean - Show a backdrop to the scale label - showLabelBackdrop: true, - - // String - The colour of the label backdrop - backdropColor: 'rgba(255,255,255,0.75)', - - // Number - The backdrop padding above & below the label in pixels - backdropPaddingY: 2, - - // Number - The backdrop padding to the side of the label in pixels - backdropPaddingX: 2, - - callback: Ticks.formatters.linear - }, - - pointLabels: { - // Boolean - if true, show point labels - display: true, - - // Number - Point label font size in pixels - fontSize: 10, - - // Function - Used to convert point labels - callback: function(label) { - return label; - } - } - }; - - function getValueCount(scale) { - var opts = scale.options; - return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0; - } - - function getPointLabelFontOptions(scale) { - var pointLabelOptions = scale.options.pointLabels; - var fontSize = helpers.valueOrDefault(pointLabelOptions.fontSize, globalDefaults.defaultFontSize); - var fontStyle = helpers.valueOrDefault(pointLabelOptions.fontStyle, globalDefaults.defaultFontStyle); - var fontFamily = helpers.valueOrDefault(pointLabelOptions.fontFamily, globalDefaults.defaultFontFamily); - var font = helpers.fontString(fontSize, fontStyle, fontFamily); - - return { - size: fontSize, - style: fontStyle, - family: fontFamily, - font: font - }; - } - - function measureLabelSize(ctx, fontSize, label) { - if (helpers.isArray(label)) { - return { - w: helpers.longestText(ctx, ctx.font, label), - h: (label.length * fontSize) + ((label.length - 1) * 1.5 * fontSize) - }; - } - - return { - w: ctx.measureText(label).width, - h: fontSize - }; - } - - function determineLimits(angle, pos, size, min, max) { - if (angle === min || angle === max) { - return { - start: pos - (size / 2), - end: pos + (size / 2) - }; - } else if (angle < min || angle > max) { - return { - start: pos - size - 5, - end: pos - }; - } - - return { - start: pos, - end: pos + size + 5 - }; - } - - /** - * Helper function to fit a radial linear scale with point labels - */ - function fitWithPointLabels(scale) { - /* - * Right, this is really confusing and there is a lot of maths going on here - * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9 - * - * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif - * - * Solution: - * - * We assume the radius of the polygon is half the size of the canvas at first - * at each index we check if the text overlaps. - * - * Where it does, we store that angle and that index. - * - * After finding the largest index and angle we calculate how much we need to remove - * from the shape radius to move the point inwards by that x. - * - * We average the left and right distances to get the maximum shape radius that can fit in the box - * along with labels. - * - * Once we have that, we can find the centre point for the chart, by taking the x text protrusion - * on each side, removing that from the size, halving it and adding the left x protrusion width. - * - * This will mean we have a shape fitted to the canvas, as large as it can be with the labels - * and position it in the most space efficient manner - * - * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif - */ - - var plFont = getPointLabelFontOptions(scale); - - // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width. - // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points - var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2); - var furthestLimits = { - r: scale.width, - l: 0, - t: scale.height, - b: 0 - }; - var furthestAngles = {}; - var i, textSize, pointPosition; - - scale.ctx.font = plFont.font; - scale._pointLabelSizes = []; - - var valueCount = getValueCount(scale); - for (i = 0; i < valueCount; i++) { - pointPosition = scale.getPointPosition(i, largestPossibleRadius); - textSize = measureLabelSize(scale.ctx, plFont.size, scale.pointLabels[i] || ''); - scale._pointLabelSizes[i] = textSize; - - // Add quarter circle to make degree 0 mean top of circle - var angleRadians = scale.getIndexAngle(i); - var angle = helpers.toDegrees(angleRadians) % 360; - var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180); - var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270); - - if (hLimits.start < furthestLimits.l) { - furthestLimits.l = hLimits.start; - furthestAngles.l = angleRadians; - } - - if (hLimits.end > furthestLimits.r) { - furthestLimits.r = hLimits.end; - furthestAngles.r = angleRadians; - } - - if (vLimits.start < furthestLimits.t) { - furthestLimits.t = vLimits.start; - furthestAngles.t = angleRadians; - } - - if (vLimits.end > furthestLimits.b) { - furthestLimits.b = vLimits.end; - furthestAngles.b = angleRadians; - } - } - - scale.setReductions(largestPossibleRadius, furthestLimits, furthestAngles); - } - - /** - * Helper function to fit a radial linear scale with no point labels - */ - function fit(scale) { - var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2); - scale.drawingArea = Math.round(largestPossibleRadius); - scale.setCenterPoint(0, 0, 0, 0); - } - - function getTextAlignForAngle(angle) { - if (angle === 0 || angle === 180) { - return 'center'; - } else if (angle < 180) { - return 'left'; - } - - return 'right'; - } - - function fillText(ctx, text, position, fontSize) { - if (helpers.isArray(text)) { - var y = position.y; - var spacing = 1.5 * fontSize; - - for (var i = 0; i < text.length; ++i) { - ctx.fillText(text[i], position.x, y); - y += spacing; - } - } else { - ctx.fillText(text, position.x, position.y); - } - } - - function adjustPointPositionForLabelHeight(angle, textSize, position) { - if (angle === 90 || angle === 270) { - position.y -= (textSize.h / 2); - } else if (angle > 270 || angle < 90) { - position.y -= textSize.h; - } - } - - function drawPointLabels(scale) { - var ctx = scale.ctx; - var opts = scale.options; - var angleLineOpts = opts.angleLines; - var pointLabelOpts = opts.pointLabels; - - ctx.lineWidth = angleLineOpts.lineWidth; - ctx.strokeStyle = angleLineOpts.color; - - var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max); - - // Point Label Font - var plFont = getPointLabelFontOptions(scale); - - ctx.textBaseline = 'top'; - - for (var i = getValueCount(scale) - 1; i >= 0; i--) { - if (angleLineOpts.display) { - var outerPosition = scale.getPointPosition(i, outerDistance); - ctx.beginPath(); - ctx.moveTo(scale.xCenter, scale.yCenter); - ctx.lineTo(outerPosition.x, outerPosition.y); - ctx.stroke(); - ctx.closePath(); - } - - if (pointLabelOpts.display) { - // Extra 3px out for some label spacing - var pointLabelPosition = scale.getPointPosition(i, outerDistance + 5); - - // Keep this in loop since we may support array properties here - var pointLabelFontColor = helpers.valueAtIndexOrDefault(pointLabelOpts.fontColor, i, globalDefaults.defaultFontColor); - ctx.font = plFont.font; - ctx.fillStyle = pointLabelFontColor; - - var angleRadians = scale.getIndexAngle(i); - var angle = helpers.toDegrees(angleRadians); - ctx.textAlign = getTextAlignForAngle(angle); - adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition); - fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size); - } - } - } - - function drawRadiusLine(scale, gridLineOpts, radius, index) { - var ctx = scale.ctx; - ctx.strokeStyle = helpers.valueAtIndexOrDefault(gridLineOpts.color, index - 1); - ctx.lineWidth = helpers.valueAtIndexOrDefault(gridLineOpts.lineWidth, index - 1); - - if (scale.options.gridLines.circular) { - // Draw circular arcs between the points - ctx.beginPath(); - ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2); - ctx.closePath(); - ctx.stroke(); - } else { - // Draw straight lines connecting each index - var valueCount = getValueCount(scale); - - if (valueCount === 0) { - return; - } - - ctx.beginPath(); - var pointPosition = scale.getPointPosition(0, radius); - ctx.moveTo(pointPosition.x, pointPosition.y); - - for (var i = 1; i < valueCount; i++) { - pointPosition = scale.getPointPosition(i, radius); - ctx.lineTo(pointPosition.x, pointPosition.y); - } - - ctx.closePath(); - ctx.stroke(); - } - } - - function numberOrZero(param) { - return helpers.isNumber(param) ? param : 0; - } - - var LinearRadialScale = Chart.LinearScaleBase.extend({ - setDimensions: function() { - var me = this; - var opts = me.options; - var tickOpts = opts.ticks; - // Set the unconstrained dimension before label rotation - me.width = me.maxWidth; - me.height = me.maxHeight; - me.xCenter = Math.round(me.width / 2); - me.yCenter = Math.round(me.height / 2); - - var minSize = helpers.min([me.height, me.width]); - var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize); - me.drawingArea = opts.display ? (minSize / 2) - (tickFontSize / 2 + tickOpts.backdropPaddingY) : (minSize / 2); - }, - determineDataLimits: function() { - var me = this; - var chart = me.chart; - var min = Number.POSITIVE_INFINITY; - var max = Number.NEGATIVE_INFINITY; - - helpers.each(chart.data.datasets, function(dataset, datasetIndex) { - if (chart.isDatasetVisible(datasetIndex)) { - var meta = chart.getDatasetMeta(datasetIndex); - - helpers.each(dataset.data, function(rawValue, index) { - var value = +me.getRightValue(rawValue); - if (isNaN(value) || meta.data[index].hidden) { - return; - } - - min = Math.min(value, min); - max = Math.max(value, max); - }); - } - }); - - me.min = (min === Number.POSITIVE_INFINITY ? 0 : min); - me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max); - - // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero - me.handleTickRangeOptions(); - }, - getTickLimit: function() { - var tickOpts = this.options.ticks; - var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize); - return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize))); - }, - convertTicksToLabels: function() { - var me = this; - - Chart.LinearScaleBase.prototype.convertTicksToLabels.call(me); - - // Point labels - me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me); - }, - getLabelForIndex: function(index, datasetIndex) { - return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]); - }, - fit: function() { - if (this.options.pointLabels.display) { - fitWithPointLabels(this); - } else { - fit(this); - } - }, - /** - * Set radius reductions and determine new radius and center point - * @private - */ - setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) { - var me = this; - var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l); - var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r); - var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t); - var radiusReductionBottom = -Math.max(furthestLimits.b - me.height, 0) / Math.cos(furthestAngles.b); - - radiusReductionLeft = numberOrZero(radiusReductionLeft); - radiusReductionRight = numberOrZero(radiusReductionRight); - radiusReductionTop = numberOrZero(radiusReductionTop); - radiusReductionBottom = numberOrZero(radiusReductionBottom); - - me.drawingArea = Math.min( - Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2), - Math.round(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2)); - me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom); - }, - setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) { - var me = this; - var maxRight = me.width - rightMovement - me.drawingArea; - var maxLeft = leftMovement + me.drawingArea; - var maxTop = topMovement + me.drawingArea; - var maxBottom = me.height - bottomMovement - me.drawingArea; - - me.xCenter = Math.round(((maxLeft + maxRight) / 2) + me.left); - me.yCenter = Math.round(((maxTop + maxBottom) / 2) + me.top); - }, - - getIndexAngle: function(index) { - var angleMultiplier = (Math.PI * 2) / getValueCount(this); - var startAngle = this.chart.options && this.chart.options.startAngle ? - this.chart.options.startAngle : - 0; - - var startAngleRadians = startAngle * Math.PI * 2 / 360; - - // Start from the top instead of right, so remove a quarter of the circle - return index * angleMultiplier + startAngleRadians; - }, - getDistanceFromCenterForValue: function(value) { - var me = this; - - if (value === null) { - return 0; // null always in center - } - - // Take into account half font size + the yPadding of the top value - var scalingFactor = me.drawingArea / (me.max - me.min); - if (me.options.ticks.reverse) { - return (me.max - value) * scalingFactor; - } - return (value - me.min) * scalingFactor; - }, - getPointPosition: function(index, distanceFromCenter) { - var me = this; - var thisAngle = me.getIndexAngle(index) - (Math.PI / 2); - return { - x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + me.xCenter, - y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + me.yCenter - }; - }, - getPointPositionForValue: function(index, value) { - return this.getPointPosition(index, this.getDistanceFromCenterForValue(value)); - }, - - getBasePosition: function() { - var me = this; - var min = me.min; - var max = me.max; - - return me.getPointPositionForValue(0, - me.beginAtZero ? 0 : - min < 0 && max < 0 ? max : - min > 0 && max > 0 ? min : - 0); - }, - - draw: function() { - var me = this; - var opts = me.options; - var gridLineOpts = opts.gridLines; - var tickOpts = opts.ticks; - var valueOrDefault = helpers.valueOrDefault; - - if (opts.display) { - var ctx = me.ctx; - var startAngle = this.getIndexAngle(0); - - // Tick Font - var tickFontSize = valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize); - var tickFontStyle = valueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle); - var tickFontFamily = valueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily); - var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily); - - helpers.each(me.ticks, function(label, index) { - // Don't draw a centre value (if it is minimum) - if (index > 0 || tickOpts.reverse) { - var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]); - - // Draw circular lines around the scale - if (gridLineOpts.display && index !== 0) { - drawRadiusLine(me, gridLineOpts, yCenterOffset, index); - } - - if (tickOpts.display) { - var tickFontColor = valueOrDefault(tickOpts.fontColor, globalDefaults.defaultFontColor); - ctx.font = tickLabelFont; - - ctx.save(); - ctx.translate(me.xCenter, me.yCenter); - ctx.rotate(startAngle); - - if (tickOpts.showLabelBackdrop) { - var labelWidth = ctx.measureText(label).width; - ctx.fillStyle = tickOpts.backdropColor; - ctx.fillRect( - -labelWidth / 2 - tickOpts.backdropPaddingX, - -yCenterOffset - tickFontSize / 2 - tickOpts.backdropPaddingY, - labelWidth + tickOpts.backdropPaddingX * 2, - tickFontSize + tickOpts.backdropPaddingY * 2 - ); - } - - ctx.textAlign = 'center'; - ctx.textBaseline = 'middle'; - ctx.fillStyle = tickFontColor; - ctx.fillText(label, 0, -yCenterOffset); - ctx.restore(); - } - } - }); - - if (opts.angleLines.display || opts.pointLabels.display) { - drawPointLabels(me); - } - } - } - }); - - scaleService.registerScaleType('radialLinear', LinearRadialScale, defaultConfig); -}; - -},{"26":26,"34":34,"35":35,"46":46}],59:[function(require,module,exports){ -/* global window: false */ -'use strict'; - -var moment = require(1); -moment = typeof moment === 'function' ? moment : window.moment; - -var defaults = require(26); -var helpers = require(46); -var Scale = require(33); -var scaleService = require(34); - -// Integer constants are from the ES6 spec. -var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991; -var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991; - -var INTERVALS = { - millisecond: { - common: true, - size: 1, - steps: [1, 2, 5, 10, 20, 50, 100, 250, 500] - }, - second: { - common: true, - size: 1000, - steps: [1, 2, 5, 10, 15, 30] - }, - minute: { - common: true, - size: 60000, - steps: [1, 2, 5, 10, 15, 30] - }, - hour: { - common: true, - size: 3600000, - steps: [1, 2, 3, 6, 12] - }, - day: { - common: true, - size: 86400000, - steps: [1, 2, 5] - }, - week: { - common: false, - size: 604800000, - steps: [1, 2, 3, 4] - }, - month: { - common: true, - size: 2.628e9, - steps: [1, 2, 3] - }, - quarter: { - common: false, - size: 7.884e9, - steps: [1, 2, 3, 4] - }, - year: { - common: true, - size: 3.154e10 - } -}; - -var UNITS = Object.keys(INTERVALS); - -function sorter(a, b) { - return a - b; -} - -function arrayUnique(items) { - var hash = {}; - var out = []; - var i, ilen, item; - - for (i = 0, ilen = items.length; i < ilen; ++i) { - item = items[i]; - if (!hash[item]) { - hash[item] = true; - out.push(item); - } - } - - return out; -} - -/** - * Returns an array of {time, pos} objects used to interpolate a specific `time` or position - * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is - * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other - * extremity (left + width or top + height). Note that it would be more optimized to directly - * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need - * to create the lookup table. The table ALWAYS contains at least two items: min and max. - * - * @param {Number[]} timestamps - timestamps sorted from lowest to highest. - * @param {String} distribution - If 'linear', timestamps will be spread linearly along the min - * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}. - * If 'series', timestamps will be positioned at the same distance from each other. In this - * case, only timestamps that break the time linearity are registered, meaning that in the - * best case, all timestamps are linear, the table contains only min and max. - */ -function buildLookupTable(timestamps, min, max, distribution) { - if (distribution === 'linear' || !timestamps.length) { - return [ - {time: min, pos: 0}, - {time: max, pos: 1} - ]; - } - - var table = []; - var items = [min]; - var i, ilen, prev, curr, next; - - for (i = 0, ilen = timestamps.length; i < ilen; ++i) { - curr = timestamps[i]; - if (curr > min && curr < max) { - items.push(curr); - } - } - - items.push(max); - - for (i = 0, ilen = items.length; i < ilen; ++i) { - next = items[i + 1]; - prev = items[i - 1]; - curr = items[i]; - - // only add points that breaks the scale linearity - if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) { - table.push({time: curr, pos: i / (ilen - 1)}); - } - } - - return table; -} - -// @see adapted from http://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/ -function lookup(table, key, value) { - var lo = 0; - var hi = table.length - 1; - var mid, i0, i1; - - while (lo >= 0 && lo <= hi) { - mid = (lo + hi) >> 1; - i0 = table[mid - 1] || null; - i1 = table[mid]; - - if (!i0) { - // given value is outside table (before first item) - return {lo: null, hi: i1}; - } else if (i1[key] < value) { - lo = mid + 1; - } else if (i0[key] > value) { - hi = mid - 1; - } else { - return {lo: i0, hi: i1}; - } - } - - // given value is outside table (after last item) - return {lo: i1, hi: null}; -} - -/** - * Linearly interpolates the given source `value` using the table items `skey` values and - * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos') - * returns the position for a timestamp equal to 42. If value is out of bounds, values at - * index [0, 1] or [n - 1, n] are used for the interpolation. - */ -function interpolate(table, skey, sval, tkey) { - var range = lookup(table, skey, sval); - - // Note: the lookup table ALWAYS contains at least 2 items (min and max) - var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo; - var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi; - - var span = next[skey] - prev[skey]; - var ratio = span ? (sval - prev[skey]) / span : 0; - var offset = (next[tkey] - prev[tkey]) * ratio; - - return prev[tkey] + offset; -} - -/** - * Convert the given value to a moment object using the given time options. - * @see http://momentjs.com/docs/#/parsing/ - */ -function momentify(value, options) { - var parser = options.parser; - var format = options.parser || options.format; - - if (typeof parser === 'function') { - return parser(value); - } - - if (typeof value === 'string' && typeof format === 'string') { - return moment(value, format); - } - - if (!(value instanceof moment)) { - value = moment(value); - } - - if (value.isValid()) { - return value; - } - - // Labels are in an incompatible moment format and no `parser` has been provided. - // The user might still use the deprecated `format` option to convert his inputs. - if (typeof format === 'function') { - return format(value); - } - - return value; -} - -function parse(input, scale) { - if (helpers.isNullOrUndef(input)) { - return null; - } - - var options = scale.options.time; - var value = momentify(scale.getRightValue(input), options); - if (!value.isValid()) { - return null; - } - - if (options.round) { - value.startOf(options.round); - } - - return value.valueOf(); -} - -/** - * Returns the number of unit to skip to be able to display up to `capacity` number of ticks - * in `unit` for the given `min` / `max` range and respecting the interval steps constraints. - */ -function determineStepSize(min, max, unit, capacity) { - var range = max - min; - var interval = INTERVALS[unit]; - var milliseconds = interval.size; - var steps = interval.steps; - var i, ilen, factor; - - if (!steps) { - return Math.ceil(range / (capacity * milliseconds)); - } - - for (i = 0, ilen = steps.length; i < ilen; ++i) { - factor = steps[i]; - if (Math.ceil(range / (milliseconds * factor)) <= capacity) { - break; - } - } - - return factor; -} - -/** - * Figures out what unit results in an appropriate number of auto-generated ticks - */ -function determineUnitForAutoTicks(minUnit, min, max, capacity) { - var ilen = UNITS.length; - var i, interval, factor; - - for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) { - interval = INTERVALS[UNITS[i]]; - factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER; - - if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) { - return UNITS[i]; - } - } - - return UNITS[ilen - 1]; -} - -/** - * Figures out what unit to format a set of ticks with - */ -function determineUnitForFormatting(ticks, minUnit, min, max) { - var duration = moment.duration(moment(max).diff(moment(min))); - var ilen = UNITS.length; - var i, unit; - - for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) { - unit = UNITS[i]; - if (INTERVALS[unit].common && duration.as(unit) >= ticks.length) { - return unit; - } - } - - return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0]; -} - -function determineMajorUnit(unit) { - for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) { - if (INTERVALS[UNITS[i]].common) { - return UNITS[i]; - } - } -} - -/** - * Generates a maximum of `capacity` timestamps between min and max, rounded to the - * `minor` unit, aligned on the `major` unit and using the given scale time `options`. - * Important: this method can return ticks outside the min and max range, it's the - * responsibility of the calling code to clamp values if needed. - */ -function generate(min, max, capacity, options) { - var timeOpts = options.time; - var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity); - var major = determineMajorUnit(minor); - var stepSize = helpers.valueOrDefault(timeOpts.stepSize, timeOpts.unitStepSize); - var weekday = minor === 'week' ? timeOpts.isoWeekday : false; - var majorTicksEnabled = options.ticks.major.enabled; - var interval = INTERVALS[minor]; - var first = moment(min); - var last = moment(max); - var ticks = []; - var time; - - if (!stepSize) { - stepSize = determineStepSize(min, max, minor, capacity); - } - - // For 'week' unit, handle the first day of week option - if (weekday) { - first = first.isoWeekday(weekday); - last = last.isoWeekday(weekday); - } - - // Align first/last ticks on unit - first = first.startOf(weekday ? 'day' : minor); - last = last.startOf(weekday ? 'day' : minor); - - // Make sure that the last tick include max - if (last < max) { - last.add(1, minor); - } - - time = moment(first); - - if (majorTicksEnabled && major && !weekday && !timeOpts.round) { - // Align the first tick on the previous `minor` unit aligned on the `major` unit: - // we first aligned time on the previous `major` unit then add the number of full - // stepSize there is between first and the previous major time. - time.startOf(major); - time.add(~~((first - time) / (interval.size * stepSize)) * stepSize, minor); - } - - for (; time < last; time.add(stepSize, minor)) { - ticks.push(+time); - } - - ticks.push(+time); - - return ticks; -} - -/** - * Returns the right and left offsets from edges in the form of {left, right}. - * Offsets are added when the `offset` option is true. - */ -function computeOffsets(table, ticks, min, max, options) { - var left = 0; - var right = 0; - var upper, lower; - - if (options.offset && ticks.length) { - if (!options.time.min) { - upper = ticks.length > 1 ? ticks[1] : max; - lower = ticks[0]; - left = ( - interpolate(table, 'time', upper, 'pos') - - interpolate(table, 'time', lower, 'pos') - ) / 2; - } - if (!options.time.max) { - upper = ticks[ticks.length - 1]; - lower = ticks.length > 1 ? ticks[ticks.length - 2] : min; - right = ( - interpolate(table, 'time', upper, 'pos') - - interpolate(table, 'time', lower, 'pos') - ) / 2; - } - } - - return {left: left, right: right}; -} - -function ticksFromTimestamps(values, majorUnit) { - var ticks = []; - var i, ilen, value, major; - - for (i = 0, ilen = values.length; i < ilen; ++i) { - value = values[i]; - major = majorUnit ? value === +moment(value).startOf(majorUnit) : false; - - ticks.push({ - value: value, - major: major - }); - } - - return ticks; -} - -function determineLabelFormat(data, timeOpts) { - var i, momentDate, hasTime; - var ilen = data.length; - - // find the label with the most parts (milliseconds, minutes, etc.) - // format all labels with the same level of detail as the most specific label - for (i = 0; i < ilen; i++) { - momentDate = momentify(data[i], timeOpts); - if (momentDate.millisecond() !== 0) { - return 'MMM D, YYYY h:mm:ss.SSS a'; - } - if (momentDate.second() !== 0 || momentDate.minute() !== 0 || momentDate.hour() !== 0) { - hasTime = true; - } - } - if (hasTime) { - return 'MMM D, YYYY h:mm:ss a'; - } - return 'MMM D, YYYY'; -} - -module.exports = function() { - - var defaultConfig = { - position: 'bottom', - - /** - * Data distribution along the scale: - * - 'linear': data are spread according to their time (distances can vary), - * - 'series': data are spread at the same distance from each other. - * @see https://github.com/chartjs/Chart.js/pull/4507 - * @since 2.7.0 - */ - distribution: 'linear', - - /** - * Scale boundary strategy (bypassed by min/max time options) - * - `data`: make sure data are fully visible, ticks outside are removed - * - `ticks`: make sure ticks are fully visible, data outside are truncated - * @see https://github.com/chartjs/Chart.js/pull/4556 - * @since 2.7.0 - */ - bounds: 'data', - - time: { - parser: false, // false == a pattern string from http://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment - format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from http://momentjs.com/docs/#/parsing/string-format/ - unit: false, // false == automatic or override with week, month, year, etc. - round: false, // none, or override with week, month, year, etc. - displayFormat: false, // DEPRECATED - isoWeekday: false, // override week start day - see http://momentjs.com/docs/#/get-set/iso-weekday/ - minUnit: 'millisecond', - - // defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/ - displayFormats: { - millisecond: 'h:mm:ss.SSS a', // 11:20:01.123 AM, - second: 'h:mm:ss a', // 11:20:01 AM - minute: 'h:mm a', // 11:20 AM - hour: 'hA', // 5PM - day: 'MMM D', // Sep 4 - week: 'll', // Week 46, or maybe "[W]WW - YYYY" ? - month: 'MMM YYYY', // Sept 2015 - quarter: '[Q]Q - YYYY', // Q3 - year: 'YYYY' // 2015 - }, - }, - ticks: { - autoSkip: false, - - /** - * Ticks generation input values: - * - 'auto': generates "optimal" ticks based on scale size and time options. - * - 'data': generates ticks from data (including labels from data {t|x|y} objects). - * - 'labels': generates ticks from user given `data.labels` values ONLY. - * @see https://github.com/chartjs/Chart.js/pull/4507 - * @since 2.7.0 - */ - source: 'auto', - - major: { - enabled: false - } - } - }; - - var TimeScale = Scale.extend({ - initialize: function() { - if (!moment) { - throw new Error('Chart.js - Moment.js could not be found! You must include it before Chart.js to use the time scale. Download at https://momentjs.com'); - } - - this.mergeTicksOptions(); - - Scale.prototype.initialize.call(this); - }, - - update: function() { - var me = this; - var options = me.options; - - // DEPRECATIONS: output a message only one time per update - if (options.time && options.time.format) { - console.warn('options.time.format is deprecated and replaced by options.time.parser.'); - } - - return Scale.prototype.update.apply(me, arguments); - }, - - /** - * Allows data to be referenced via 't' attribute - */ - getRightValue: function(rawValue) { - if (rawValue && rawValue.t !== undefined) { - rawValue = rawValue.t; - } - return Scale.prototype.getRightValue.call(this, rawValue); - }, - - determineDataLimits: function() { - var me = this; - var chart = me.chart; - var timeOpts = me.options.time; - var unit = timeOpts.unit || 'day'; - var min = MAX_INTEGER; - var max = MIN_INTEGER; - var timestamps = []; - var datasets = []; - var labels = []; - var i, j, ilen, jlen, data, timestamp; - - // Convert labels to timestamps - for (i = 0, ilen = chart.data.labels.length; i < ilen; ++i) { - labels.push(parse(chart.data.labels[i], me)); - } - - // Convert data to timestamps - for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) { - if (chart.isDatasetVisible(i)) { - data = chart.data.datasets[i].data; - - // Let's consider that all data have the same format. - if (helpers.isObject(data[0])) { - datasets[i] = []; - - for (j = 0, jlen = data.length; j < jlen; ++j) { - timestamp = parse(data[j], me); - timestamps.push(timestamp); - datasets[i][j] = timestamp; - } - } else { - timestamps.push.apply(timestamps, labels); - datasets[i] = labels.slice(0); - } - } else { - datasets[i] = []; - } - } - - if (labels.length) { - // Sort labels **after** data have been converted - labels = arrayUnique(labels).sort(sorter); - min = Math.min(min, labels[0]); - max = Math.max(max, labels[labels.length - 1]); - } - - if (timestamps.length) { - timestamps = arrayUnique(timestamps).sort(sorter); - min = Math.min(min, timestamps[0]); - max = Math.max(max, timestamps[timestamps.length - 1]); - } - - min = parse(timeOpts.min, me) || min; - max = parse(timeOpts.max, me) || max; - - // In case there is no valid min/max, set limits based on unit time option - min = min === MAX_INTEGER ? +moment().startOf(unit) : min; - max = max === MIN_INTEGER ? +moment().endOf(unit) + 1 : max; - - // Make sure that max is strictly higher than min (required by the lookup table) - me.min = Math.min(min, max); - me.max = Math.max(min + 1, max); - - // PRIVATE - me._horizontal = me.isHorizontal(); - me._table = []; - me._timestamps = { - data: timestamps, - datasets: datasets, - labels: labels - }; - }, - - buildTicks: function() { - var me = this; - var min = me.min; - var max = me.max; - var options = me.options; - var timeOpts = options.time; - var timestamps = []; - var ticks = []; - var i, ilen, timestamp; - - switch (options.ticks.source) { - case 'data': - timestamps = me._timestamps.data; - break; - case 'labels': - timestamps = me._timestamps.labels; - break; - case 'auto': - default: - timestamps = generate(min, max, me.getLabelCapacity(min), options); - } - - if (options.bounds === 'ticks' && timestamps.length) { - min = timestamps[0]; - max = timestamps[timestamps.length - 1]; - } - - // Enforce limits with user min/max options - min = parse(timeOpts.min, me) || min; - max = parse(timeOpts.max, me) || max; - - // Remove ticks outside the min/max range - for (i = 0, ilen = timestamps.length; i < ilen; ++i) { - timestamp = timestamps[i]; - if (timestamp >= min && timestamp <= max) { - ticks.push(timestamp); - } - } - - me.min = min; - me.max = max; - - // PRIVATE - me._unit = timeOpts.unit || determineUnitForFormatting(ticks, timeOpts.minUnit, me.min, me.max); - me._majorUnit = determineMajorUnit(me._unit); - me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution); - me._offsets = computeOffsets(me._table, ticks, min, max, options); - me._labelFormat = determineLabelFormat(me._timestamps.data, timeOpts); - - return ticksFromTimestamps(ticks, me._majorUnit); - }, - - getLabelForIndex: function(index, datasetIndex) { - var me = this; - var data = me.chart.data; - var timeOpts = me.options.time; - var label = data.labels && index < data.labels.length ? data.labels[index] : ''; - var value = data.datasets[datasetIndex].data[index]; - - if (helpers.isObject(value)) { - label = me.getRightValue(value); - } - if (timeOpts.tooltipFormat) { - return momentify(label, timeOpts).format(timeOpts.tooltipFormat); - } - if (typeof label === 'string') { - return label; - } - - return momentify(label, timeOpts).format(me._labelFormat); - }, - - /** - * Function to format an individual tick mark - * @private - */ - tickFormatFunction: function(tick, index, ticks, formatOverride) { - var me = this; - var options = me.options; - var time = tick.valueOf(); - var formats = options.time.displayFormats; - var minorFormat = formats[me._unit]; - var majorUnit = me._majorUnit; - var majorFormat = formats[majorUnit]; - var majorTime = tick.clone().startOf(majorUnit).valueOf(); - var majorTickOpts = options.ticks.major; - var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime; - var label = tick.format(formatOverride ? formatOverride : major ? majorFormat : minorFormat); - var tickOpts = major ? majorTickOpts : options.ticks.minor; - var formatter = helpers.valueOrDefault(tickOpts.callback, tickOpts.userCallback); - - return formatter ? formatter(label, index, ticks) : label; - }, - - convertTicksToLabels: function(ticks) { - var labels = []; - var i, ilen; - - for (i = 0, ilen = ticks.length; i < ilen; ++i) { - labels.push(this.tickFormatFunction(moment(ticks[i].value), i, ticks)); - } - - return labels; - }, - - /** - * @private - */ - getPixelForOffset: function(time) { - var me = this; - var size = me._horizontal ? me.width : me.height; - var start = me._horizontal ? me.left : me.top; - var pos = interpolate(me._table, 'time', time, 'pos'); - - return start + size * (me._offsets.left + pos) / (me._offsets.left + 1 + me._offsets.right); - }, - - getPixelForValue: function(value, index, datasetIndex) { - var me = this; - var time = null; - - if (index !== undefined && datasetIndex !== undefined) { - time = me._timestamps.datasets[datasetIndex][index]; - } - - if (time === null) { - time = parse(value, me); - } - - if (time !== null) { - return me.getPixelForOffset(time); - } - }, - - getPixelForTick: function(index) { - var ticks = this.getTicks(); - return index >= 0 && index < ticks.length ? - this.getPixelForOffset(ticks[index].value) : - null; - }, - - getValueForPixel: function(pixel) { - var me = this; - var size = me._horizontal ? me.width : me.height; - var start = me._horizontal ? me.left : me.top; - var pos = (size ? (pixel - start) / size : 0) * (me._offsets.left + 1 + me._offsets.left) - me._offsets.right; - var time = interpolate(me._table, 'pos', pos, 'time'); - - return moment(time); - }, - - /** - * Crude approximation of what the label width might be - * @private - */ - getLabelWidth: function(label) { - var me = this; - var ticksOpts = me.options.ticks; - var tickLabelWidth = me.ctx.measureText(label).width; - var angle = helpers.toRadians(ticksOpts.maxRotation); - var cosRotation = Math.cos(angle); - var sinRotation = Math.sin(angle); - var tickFontSize = helpers.valueOrDefault(ticksOpts.fontSize, defaults.global.defaultFontSize); - - return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation); - }, - - /** - * @private - */ - getLabelCapacity: function(exampleTime) { - var me = this; - - var formatOverride = me.options.time.displayFormats.millisecond; // Pick the longest format for guestimation - - var exampleLabel = me.tickFormatFunction(moment(exampleTime), 0, [], formatOverride); - var tickLabelWidth = me.getLabelWidth(exampleLabel); - var innerWidth = me.isHorizontal() ? me.width : me.height; - - var capacity = Math.floor(innerWidth / tickLabelWidth); - return capacity > 0 ? capacity : 1; - } - }); - - scaleService.registerScaleType('time', TimeScale, defaultConfig); -}; - -},{"1":1,"26":26,"33":33,"34":34,"46":46}]},{},[7])(7) +core_controller.helpers = helpers$1; + +// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests! +core_helpers(core_controller); + +core_controller._adapters = core_adapters; +core_controller.Animation = core_animation; +core_controller.animationService = core_animations; +core_controller.controllers = controllers; +core_controller.DatasetController = core_datasetController; +core_controller.defaults = core_defaults; +core_controller.Element = core_element; +core_controller.elements = elements; +core_controller.Interaction = core_interaction; +core_controller.layouts = core_layouts; +core_controller.platform = platform; +core_controller.plugins = core_plugins; +core_controller.Scale = core_scale; +core_controller.scaleService = core_scaleService; +core_controller.Ticks = core_ticks; +core_controller.Tooltip = core_tooltip; + +// Register built-in scales + +core_controller.helpers.each(scales, function(scale, type) { + core_controller.scaleService.registerScaleType(type, scale, scale._defaults); }); + +// Load to register built-in adapters (as side effects) + + +// Loading built-in plugins + +for (var k in plugins) { + if (plugins.hasOwnProperty(k)) { + core_controller.plugins.register(plugins[k]); + } +} + +core_controller.platform.initialize(); + +var src = core_controller; +if (typeof window !== 'undefined') { + window.Chart = core_controller; +} + +// DEPRECATIONS + +/** + * Provided for backward compatibility, not available anymore + * @namespace Chart.Chart + * @deprecated since version 2.8.0 + * @todo remove at version 3 + * @private + */ +core_controller.Chart = core_controller; + +/** + * Provided for backward compatibility, not available anymore + * @namespace Chart.Legend + * @deprecated since version 2.1.5 + * @todo remove at version 3 + * @private + */ +core_controller.Legend = plugins.legend._element; + +/** + * Provided for backward compatibility, not available anymore + * @namespace Chart.Title + * @deprecated since version 2.1.5 + * @todo remove at version 3 + * @private + */ +core_controller.Title = plugins.title._element; + +/** + * Provided for backward compatibility, use Chart.plugins instead + * @namespace Chart.pluginService + * @deprecated since version 2.1.5 + * @todo remove at version 3 + * @private + */ +core_controller.pluginService = core_controller.plugins; + +/** + * Provided for backward compatibility, inheriting from Chart.PlugingBase has no + * effect, instead simply create/register plugins via plain JavaScript objects. + * @interface Chart.PluginBase + * @deprecated since version 2.5.0 + * @todo remove at version 3 + * @private + */ +core_controller.PluginBase = core_controller.Element.extend({}); + +/** + * Provided for backward compatibility, use Chart.helpers.canvas instead. + * @namespace Chart.canvasHelpers + * @deprecated since version 2.6.0 + * @todo remove at version 3 + * @private + */ +core_controller.canvasHelpers = core_controller.helpers.canvas; + +/** + * Provided for backward compatibility, use Chart.layouts instead. + * @namespace Chart.layoutService + * @deprecated since version 2.7.3 + * @todo remove at version 3 + * @private + */ +core_controller.layoutService = core_controller.layouts; + +/** + * Provided for backward compatibility, not available anymore. + * @namespace Chart.LinearScaleBase + * @deprecated since version 2.8 + * @todo remove at version 3 + * @private + */ +core_controller.LinearScaleBase = scale_linearbase; + +/** + * Provided for backward compatibility, instead we should create a new Chart + * by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`). + * @deprecated since version 2.8.0 + * @todo remove at version 3 + */ +core_controller.helpers.each( + [ + 'Bar', + 'Bubble', + 'Doughnut', + 'Line', + 'PolarArea', + 'Radar', + 'Scatter' + ], + function(klass) { + core_controller[klass] = function(ctx, cfg) { + return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, { + type: klass.charAt(0).toLowerCase() + klass.slice(1) + })); + }; + } +); + +return src; + +}))); diff --git a/addons/web/static/src/js/views/graph/graph_controller.js b/addons/web/static/src/js/views/graph/graph_controller.js index 9e2ebfc0a78..8cfed52a050 100644 --- a/addons/web/static/src/js/views/graph/graph_controller.js +++ b/addons/web/static/src/js/views/graph/graph_controller.js @@ -172,7 +172,7 @@ var GraphController = AbstractController.extend(GroupByMenuMixin,{ .find('.o_graph_button[data-mode="stack"]') .data('stacked', state.stacked) .toggleClass('active', state.stacked) - .toggleClass('o_hidden', state.mode !== 'bar'); + .toggleClass('o_hidden', state.mode !== 'bar' || !this.renderer.isStackable); _.each(this.$measureList.find('.dropdown-item'), function (item) { var $item = $(item); $item.toggleClass('selected', $item.data('field') === state.measure); diff --git a/addons/web/static/src/js/views/graph/graph_model.js b/addons/web/static/src/js/views/graph/graph_model.js index 0ab8d4c0570..cf17e7267ab 100644 --- a/addons/web/static/src/js/views/graph/graph_model.js +++ b/addons/web/static/src/js/views/graph/graph_model.js @@ -219,7 +219,7 @@ return AbstractModel.extend({ /** * Since read_group is insane and returns its result on different keys * depending of some input, we have to normalize the result. - * Each group comming from the read_group produces a dataPoint + * Each group coming from the read_group produces a dataPoint * * @todo This is not good for race conditions. The processing should get * the object this.chart in argument, or an array or something. We want to @@ -247,7 +247,7 @@ return AbstractModel.extend({ // when a many2one field is used as a measure AND as a grouped // field, bad things happen. The server will only return the // grouped value and will not aggregate it. Since there is a - // nameclash, we are then in the situation where this value is + // name clash, we are then in the situation where this value is // an array. Fortunately, if we group by a field, then we can // say for certain that the group contains exactly one distinct // value for that field. diff --git a/addons/web/static/src/js/views/graph/graph_renderer.js b/addons/web/static/src/js/views/graph/graph_renderer.js index 3cc8ce80eba..f967c56a179 100644 --- a/addons/web/static/src/js/views/graph/graph_renderer.js +++ b/addons/web/static/src/js/views/graph/graph_renderer.js @@ -18,15 +18,16 @@ var qweb = core.qweb; var CHART_TYPES = ['pie', 'bar', 'line']; -var COLORS = ["#1f77b4","#ff7f0e","#aec7e8","#ffbb78","#2ca02c","#98df8a","#d62728", - "#ff9896","#9467bd","#c5b0d5","#8c564b","#c49c94","#e377c2","#f7b6d2", - "#7f7f7f","#c7c7c7","#bcbd22","#dbdb8d","#17becf","#9edae5"]; +var COLORS = ["#1f77b4", "#ff7f0e", "#aec7e8", "#ffbb78", "#2ca02c", "#98df8a", "#d62728", + "#ff9896", "#9467bd", "#c5b0d5", "#8c564b", "#c49c94", "#e377c2", "#f7b6d2", + "#7f7f7f", "#c7c7c7", "#bcbd22", "#dbdb8d", "#17becf", "#9edae5"]; var COLOR_NB = COLORS.length; -function hexToRGBA (hex, opacity) { + +function hexToRGBA(hex, opacity) { var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex); var rgb = result.slice(1, 4).map(function (n) { - return parseInt(n, 16); - }).join(','); + return parseInt(n, 16); + }).join(','); return 'rgba(' + rgb + ',' + opacity + ')'; } @@ -45,13 +46,11 @@ var FORMAT_OPTIONS = { }, }; - var NO_DATA = [_t('No data')]; NO_DATA.isNoData = true; // hide top legend when too many items for device size var MAX_LEGEND_LENGTH = 4 * (Math.max(1, config.device.size_class)); -var MAX_TOOLTIPS_LENGTH = 4 * (Math.max(1, config.device.size_class)); return AbstractRenderer.extend({ className: "o_graph_renderer", @@ -72,22 +71,21 @@ return AbstractRenderer.extend({ this.chart = null; this.chartId = _.uniqueId('chart'); + // the bar charts are considered stackable a priori + this.isStackable = true; + this.$legendTooltip = null; + this.$tooltip = null; }, /** * @override */ - updateState: function () { - + updateState: function () { return this._super.apply(this, arguments); }, /** - * The graph view uses the Chart.js lib to render the graph. This lib requires - * that the rendering is done directly into the DOM (so that it can correctly - * compute positions). However, the views are always rendered in fragments, - * and appended to the DOM once ready (to prevent them from flickering). We - * here use the on_attach_callback hook, called when the widget is attached - * to the DOM, to perform the rendering. This ensures that the rendering is - * always done in the DOM. + * Chart.js does not need the canvas to be in dom in order + * to be able to work well. We could avoid the calls to on_attach_callback + * and on_detach_callback. * * @override */ @@ -108,6 +106,98 @@ return AbstractRenderer.extend({ // Private //-------------------------------------------------------------------------- + /** + * This function aims to remove a suitable number of lines from the tooltip in order to make it reasonably visible. + * A message indicating the number of lines is added if necessary. + * + * @private + * @param {Number} maxTooltipHeight this the max height in pixels of the tooltip + */ + _adjustTooltipHeight: function (maxTooltipHeight) { + var sizeOneLine = this.$tooltip.find('tbody tr')[0].clientHeight; + var tbodySize = this.$tooltip.find('tbody')[0].clientHeight; + var toKeep = Math.floor((maxTooltipHeight - (this.$tooltip[0].clientHeight - tbodySize)) / sizeOneLine) - 1; + var $lines = this.$tooltip.find('tbody tr'); + var toRemove = $lines.length - toKeep; + if (toRemove > 0) { + $lines.slice(toKeep).remove(); + var tr = document.createElement('tr'); + var td = document.createElement('td'); + tr.classList.add('o_show_more'); + td.innerHTML = _t("..."); + tr.appendChild(td); + this.$tooltip.find('tbody').append(tr); + } + }, + /** + * This function creates a custom HTML tooltip. + * + * @private + * @param {Object} tooltipModel see chartjs documentation + */ + _customTooltip: function (tooltipModel) { + if (this.$tooltip) { + this.$tooltip.remove(); + } + if (tooltipModel.opacity === 0) { + return; + } + if (tooltipModel.dataPoints.length === 0) { + return; + } + + const chartArea = this.chart.chartArea; + const chartAreaLeft = chartArea.left; + const chartAreaRight = chartArea.right; + const chartAreaTop = chartArea.top; + const rendererTop = this.$el[0].getBoundingClientRect().top; + + const maxTooltipLabelWidth = Math.floor((chartAreaRight - chartAreaLeft) / 1.68) + 'px'; + + const tooltipItems = this._getTooltipItems(tooltipModel); + + this.$tooltip = $(qweb.render('GraphView.CustomTooltip', { + measure: this.fields[this.state.measure].string, + tooltipItems: tooltipItems, + maxWidth: maxTooltipLabelWidth, + })); + const $container = this.$el.find('.o_graph_canvas_container'); + $container.append(this.$tooltip); + + let top; + const tooltipHeight = this.$tooltip[0].clientHeight; + const minTopAllowed = Math.floor(chartAreaTop); + const maxTopAllowed = Math.floor(window.innerHeight - rendererTop - tooltipHeight) - 2; + const y = Math.floor(tooltipModel.y); + if (minTopAllowed <= maxTopAllowed) { + // Here we know that the full tooltip can fit in the screen. + // We put it in the position where Chart.js would put it + // if two conditions are respected: + // 1: the tooltip is not cut (because we know it is possible to not cut it) + // 2: the tooltip does not hide the legend. + // If it is not possible to use the Chart.js proposition (y) + // we use the best approximated value. + if (y <= maxTopAllowed) { + if (y >= minTopAllowed) { + top = y; + } else { + top = minTopAllowed; + } + } else { + top = maxTopAllowed; + } + } else { + // Here we know that we cannot satisfy condition 1 above, + // so we position the tooltip at the minimal position and + // cut it the minimum possible. + top = minTopAllowed; + const maxTooltipHeight = window.innerHeight - (rendererTop + chartAreaTop) -2; + this._adjustTooltipHeight(maxTooltipHeight); + } + this.$tooltip[0].style.top = Math.floor(top) + 'px'; + + this._fixTooltipLeftPosition(this.$tooltip[0], tooltipModel.x); + }, /** * Filter out some dataPoints because they would lead to bad graphics. * The filtering is done with respect to the graph view mode. @@ -141,20 +231,28 @@ return AbstractRenderer.extend({ return dataPoints; }, /** - * Used to avoid too long legend items + * Sets best left position of a tooltip approaching the proposal x * * @private - * @param {string} label - * @returns {string} shortened version of the input label + * @param {DOMElement} tooltip + * @param {number} x, left offset proposed */ - _shortenLabel: function (label) { - // string returned could be 'wrong' if a groupby value contain a '/'! - var groups = label.split("/"); - var shortLabel = groups.slice(0,3).join("/"); - if (groups.length > 3) { - shortLabel = shortLabel + '/...'; + _fixTooltipLeftPosition: function (tooltip, x) { + let left; + const tooltipWidth = tooltip.clientWidth; + const minLeftAllowed = Math.floor(this.chart.chartArea.left + 2); + const maxLeftAllowed = Math.floor(this.chart.chartArea.right - tooltipWidth -2); + x = Math.floor(x); + if (x <= maxLeftAllowed) { + if (x >= minLeftAllowed) { + left = x; + } else { + left = minLeftAllowed; + } + } else { + left = maxLeftAllowed; } - return shortLabel; + tooltip.style.left = left + 'px'; }, /** * Used to format correctly the values in tooltips and yAxes @@ -202,13 +300,13 @@ return AbstractRenderer.extend({ * @param {Object} dataPt * @returns {string} */ - _getDatasetLabel:function (dataPt) { + _getDatasetLabel: function (dataPt) { if (_.contains(['bar', 'line'], this.state.mode)) { // ([origin] + second to last groupBys) or measure var datasetLabel = dataPt.labels.slice(1).join("/"); if (this.state.origins.length > 1) { datasetLabel = this.state.origins[dataPt.originIndex] + - (datasetLabel ? ('/' + datasetLabel) : ''); + (datasetLabel ? ('/' + datasetLabel) : ''); } datasetLabel = datasetLabel || this.fields[this.state.measure].string; return datasetLabel; @@ -264,13 +362,16 @@ return AbstractRenderer.extend({ * Returns the options used to generate the chart legend. * * @private - * @param {number} datasetsCount + * @param {Number} datasetsCount * @returns {Object} */ _getLegendOptions: function (datasetsCount) { var legendOptions = { display: datasetsCount <= MAX_LEGEND_LENGTH, - position: config.device.size_class > config.device.SIZES.VSM ? 'right' : 'top', + // position: this.state.mode === 'pie' ? 'right' : 'top', + position: 'top', + onHover: this._onlegendTooltipHover.bind(this), + onLeave: this._onLegendTootipLeave.bind(this), }; var self = this; if (_.contains(['bar', 'line'], this.state.mode)) { @@ -281,11 +382,12 @@ return AbstractRenderer.extend({ referenceColor = 'borderColor'; } legendOptions.labels = { - generateLabels: function(chart) { + generateLabels: function (chart) { var data = chart.data; - return data.datasets.map(function(dataset, i) { + return data.datasets.map(function (dataset, i) { return { text: self._shortenLabel(dataset.label), + fullText: dataset.label, fillStyle: dataset[referenceColor], hidden: !chart.isDatasetVisible(i), lineCap: dataset.borderCapStyle, @@ -302,12 +404,12 @@ return AbstractRenderer.extend({ }; } else { legendOptions.labels = { - generateLabels: function(chart) { + generateLabels: function (chart) { var data = chart.data; var metaData = data.datasets.map(function (dataset, index) { return chart.getDatasetMeta(index).data; }); - return data.labels.map(function(label, i) { + return data.labels.map(function (label, i) { var hidden = metaData.reduce( function (hidden, data) { if (data[i]) { @@ -317,9 +419,11 @@ return AbstractRenderer.extend({ }, false ); - var text = self._shortenLabel(self._relabelling(label)); + var fullText = self._relabelling(label); + var text = self._shortenLabel(fullText); return { text: text, + fullText: fullText, fillStyle: label.isNoData ? '#d3d3d3' : self._getColor(i), hidden: hidden, index: i, @@ -345,7 +449,7 @@ return AbstractRenderer.extend({ scaleLabel: { display: this.state.groupBy.length && !this.isEmbedded, labelString: this.state.groupBy.length ? - this.fields[this.state.groupBy[0].split(':')[0]].string : '', + this.fields[this.state.groupBy[0].split(':')[0]].string : '', }, ticks: { // don't use bind: callback is called with 'index' as second parameter @@ -361,9 +465,9 @@ return AbstractRenderer.extend({ display: !this.isEmbedded, labelString: this.fields[this.state.measure].string, }, - stacked: this.state.mode === 'bar' && this.state.stacked, ticks: { callback: this._formatValue.bind(this), + suggestedMax: 0, suggestedMin: 0, } }], @@ -371,91 +475,91 @@ return AbstractRenderer.extend({ } return {}; }, + /** + * Extracts the important information from a tooltipItem generated by Charts.js + * (a tooltip item corresponds to a line (different from measure name) of a tooltip) + * + * @private + * @param {Object} item + * @param {Object} data + * @returns {Object} + */ + _getTooltipItemContent: function (item, data) { + var dataset = data.datasets[item.datasetIndex]; + var label = data.labels[item.index]; + var value; + var boxColor; + if (this.state.mode === 'bar') { + label = this._relabelling(label, dataset.originIndex); + if (this.state.groupBy.length > 1 || this.state.origins.length > 1) { + label = label + "/" + dataset.label; + } + value = this._formatValue(item.yLabel); + boxColor = dataset.backgroundColor; + } else if (this.state.mode === 'line') { + label = this._relabelling(label, dataset.originIndex); + if (this.state.groupBy.length > 1 || this.state.origins.length > 1) { + label = label + "/" + dataset.label; + } + value = this._formatValue(item.yLabel); + boxColor = dataset.borderColor; + } else { + if (label.isNoData) { + value = this._formatValue(0); + } else { + value = this._formatValue(dataset.data[item.index]); + } + label = this._relabelling(label, dataset.originIndex); + if (this.state.origins.length > 1) { + label = dataset.label + "/" + label; + } + boxColor = dataset.backgroundColor[item.index]; + } + return { + label: label, + value: value, + boxColor: boxColor, + }; + }, + /** + * This function extracts the information from the data points in tooltipModel.dataPoints + * (corresponding to datapoints over a given label determined by the mouse position) + * that will be displayed in a custom tooltip. + * + * @private + * @param {Object} tooltipModel see chartjs documentation + * @return {Object[]} + */ + _getTooltipItems: function (tooltipModel) { + var self = this; + var data = this.chart.config.data; + + var orderedItems = tooltipModel.dataPoints.sort(function (dPt1, dPt2) { + return dPt2.yLabel - dPt1.yLabel; + }); + return orderedItems.reduce( + function (acc, item) { + acc.push(self._getTooltipItemContent(item, data)); + return acc; + }, + [] + ); + }, /** * Returns the options used to generate chart tooltips. * * @private - * @param {number} datasetsCount * @returns {Object} */ - _getTooltipOptions: function (datasetsCount) { - var self = this; + _getTooltipOptions: function () { var tooltipOptions = { - bodyFontColor: 'rgba(0,0,0,1)', - titleFontSize: 13, - titleFontColor: 'rgba(0,0,0,1)', - backgroundColor: 'rgba(255,255,255,0.6)', - borderColor: 'rgba(0,0,0,0.2)', - borderWidth: 1, - callbacks: { - title: function () { - return self.fields[self.state.measure].string; - }, - }, + // disable Chart.js tooltips + enabled: false, + custom: this._customTooltip.bind(this), }; - if (_.contains(['bar', 'line'], this.state.mode)) { - var referenceColor; - if (this.state.mode === 'bar') { - referenceColor = 'backgroundColor'; - } else { - referenceColor = 'borderColor'; - // avoid too long tooltips - var adaptMode = datasetsCount > MAX_TOOLTIPS_LENGTH || this.isEmbedded; - tooltipOptions = _.extend(tooltipOptions, { - mode: adaptMode ? 'nearest' : 'index', - intersect: false, - toolitemSort: function (tooltipItem1, tooltipItem2) { - return tooltipItem2.yLabel - tooltipItem1.yLabel; - }, - }); - } - tooltipOptions.callbacks = _.extend(tooltipOptions.callbacks, { - label: function (tooltipItem, data) { - var dataset = data.datasets[tooltipItem.datasetIndex]; - var label = data.labels[tooltipItem.index]; - label = self._relabelling(label, dataset.originIndex); - if (self.state.groupBy.length > 1 || self.state.origins.length > 1) { - label = label + "/" + dataset.label; - } - label = label + ': ' + self._formatValue(tooltipItem.yLabel); - return label; - }, - labelColor: function (tooltipItem, chart) { - var dataset = chart.data.datasets[tooltipItem.datasetIndex]; - var tooltipBackgroundColor = dataset[referenceColor]; - var tooltipBorderColor = chart.tooltip._model.backgroundColor; - return { - borderColor: tooltipBorderColor, - backgroundColor: tooltipBackgroundColor, - }; - }, - }); - } else { - tooltipOptions.callbacks = _.extend(tooltipOptions.callbacks, { - label: function (tooltipItem, data) { - var dataset = data.datasets[tooltipItem.datasetIndex]; - var label = data.labels[tooltipItem.index]; - if (label === _t('No data')) { - return dataset.label + "/" + label + ': ' + self._formatValue(0); - } else { - label = self._relabelling(label, dataset.originIndex); - } - if (self.state.origins.length > 1) { - label = dataset.label + "/" + label; - } - label = label + ': ' + self._formatValue(dataset.data[tooltipItem.index]); - return label; - }, - labelColor: function (tooltipItem, chart) { - var dataset = chart.data.datasets[tooltipItem.datasetIndex]; - var tooltipBackgroundColor = dataset.backgroundColor[tooltipItem.index]; - var tooltipBorderColor = chart.tooltip._model.backgroundColor; - return { - borderColor: tooltipBorderColor, - backgroundColor: tooltipBackgroundColor, - }; - }, - }); + if (this.state.mode === 'line') { + tooltipOptions.mode = 'index'; + tooltipOptions.intersect = false; } return tooltipOptions; }, @@ -488,7 +592,7 @@ return AbstractRenderer.extend({ return index; }, /** - * Separate dataPoints comming from the read_group(s) into different datasets. + * Separate dataPoints coming from the read_group(s) into different datasets. * This function returns the parameters data and labels used to produce the charts. * * @private @@ -498,7 +602,7 @@ return AbstractRenderer.extend({ * @param {function} [getDatasetDataLength], determines the initial section of the labels array * over which the datasets have to be completed. These sections only depend * on the datasets origins. Default is the constant function _ => labels.length. - * @returns {Object} the paramater data used to instatiate the chart. + * @returns {Object} the parameter data used to instantiate the chart. */ _prepareData: function (dataPoints) { var self = this; @@ -562,13 +666,13 @@ return AbstractRenderer.extend({ maintainAspectRatio: false, scales: this._getScaleOptions(), legend: this._getLegendOptions(datasetsCount), - tooltips: this._getTooltipOptions(datasetsCount), + tooltips: this._getTooltipOptions(), }; }, /** * Determine how to relabel a label according to a given origin. * The idea is that the getLabel function is in general not invertible but - * it is when restricted to the set of dataPoints comming from a same origin. + * it is when restricted to the set of dataPoints coming from a same origin. * @private * @param {Array} label @@ -662,9 +766,35 @@ return AbstractRenderer.extend({ // prepare data var data = this._prepareData(dataPoints); + + // The datapoints (with non zero value) can be grouped by + // their originIndex and associated labels. + // If at least one group formed in that way has two elements + // this.isStackable will be true. + var groupMemberCounts = data.labels.map(function () { + return {}; + }); + this.isStackable = false; + for (var i = 0; i < data.datasets.length; i++) { + var dataset = data.datasets[i]; + var originIndex = dataset.originIndex; + if (this.isStackable) { + break; + } + for (var j = 0; j < dataset.data.length; j++) { + if (dataset.data[j]) { + if (originIndex in groupMemberCounts[j]) { + this.isStackable = true; + break; + } else { + groupMemberCounts[j][originIndex] = 1; + } + } + } + } data.datasets.forEach(function (dataset, index) { // used when stacked - dataset.stack = self.state.stacked ? self.state.origins[dataset.originIndex] : undefined; + dataset.stack = self.isStackable && self.state.stacked ? self.state.origins[dataset.originIndex] : undefined; // set dataset color var color = self._getColor(index); dataset.backgroundColor = color; @@ -711,17 +841,23 @@ return AbstractRenderer.extend({ dataset.borderColor = self._getColor(index); } if (data.labels.length === 1) { - // decalage of the real value to right. This is done to center the points in the chart + // shift of the real value to right. This is done to center the points in the chart // See data.labels below in Chart parameters dataset.data.unshift(undefined); } dataset.pointBackgroundColor = dataset.borderColor; dataset.pointBorderColor = 'rgba(0,0,0,0.2)'; }); - // center the points in the chart (whithout that code they are put on the left and the graph seems empty) + if (data.datasets.length === 1) { + const dataset = data.datasets[0]; + dataset.fill = 'origin'; + dataset.backgroundColor = hexToRGBA(COLORS[0], 0.4); + } + + // center the points in the chart (without that code they are put on the left and the graph seems empty) data.labels = data.labels.length > 1 ? - data.labels : - Array.prototype.concat.apply([], [[['']], data.labels ,[['']]]); + data.labels : + Array.prototype.concat.apply([], [[['']], data.labels, [['']]]); // prepare options var options = this._prepareOptions(data.datasets.length); @@ -834,10 +970,80 @@ return AbstractRenderer.extend({ */ _renderTitle: function () { if (this.title) { - this.$('.o_graph_canvas_container').last().prepend($('