From 75a6bcaee473ff641c2a6e5ec9eb6a19e7a4bdc2 Mon Sep 17 00:00:00 2001
From: Frederic van der Essen <fva@openerp.com / fvdessen+o@gmail.com>
Date: Thu, 17 Jul 2014 17:20:56 +0200
Subject: [PATCH] [IMP] point_of_sale: a little explaination of how the barcode
 pattern system works

---
 addons/point_of_sale/point_of_sale_view.xml | 34 ++++++++++++++++-----
 1 file changed, 27 insertions(+), 7 deletions(-)

diff --git a/addons/point_of_sale/point_of_sale_view.xml b/addons/point_of_sale/point_of_sale_view.xml
index 51fa0738076..520c22db9c7 100644
--- a/addons/point_of_sale/point_of_sale_view.xml
+++ b/addons/point_of_sale/point_of_sale_view.xml
@@ -679,13 +679,33 @@
                             <field name="receipt_header" placeholder="A custom receipt header message"/>
                             <field name="receipt_footer" placeholder="A custom receipt header footage"/>
                         </group>
-                        <group string="Barcode Types" col="4">
-                            <field name="barcode_product" />
-                            <field name="barcode_cashier" />
-                            <field name="barcode_customer" />
-                            <field name="barcode_weight" />
-                            <field name="barcode_discount" />
-                            <field name="barcode_price" />
+                        <group string="Barcode Types" col="1">
+                            <p>
+                                Barcode Patterns allow to match barcodes to actions or to embed information such as price and quantity in the barcode.
+                                Barcode Patterns only work with EAN13 barcodes.
+                            </p>
+                            <p> 
+                                Each type of barcode accepts a list of patterns seprated by commas. A scanned 
+                                barcode will be attributed to a type if it matches one of its patterns. 
+                                The patterns take the form of EAN13 barcodes. Numbers in the pattern must match
+                                the number in the scanned barcode. A 'x' or a '*' in a pattern will match
+                                any one number. If the patterns are shorter than EAN13 barcodes, they are assumed
+                                to be prefixes and match at the beginning. Weight, Price and Discount patterns also
+                                tell how the weight, price or discount is encoded in the barcode. 'N' indicate the
+                                positions where the integer part is en encoded, and 'D' where the decimals are encoded.
+                                If multiple pattern match one barcode, the longest pattern with the less 'x' or '*' is
+                                considered the matching one. If a barcode matches no pattern it will not be found in
+                                the POS.
+                            </p>
+                            <group col="4">
+
+                                <field name="barcode_product" />
+                                <field name="barcode_cashier" />
+                                <field name="barcode_customer" />
+                                <field name="barcode_weight" />
+                                <field name="barcode_discount" />
+                                <field name="barcode_price" />
+                            </group>
                         </group>
                     </sheet>