[ADD] POS ticket logo addon

pos_ticket_logo/README.rst

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+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+    :alt: AGPLv3 License
+
+POS Ticket logo
+===============
+
+Add company logo in POS ticket
+
+
+Motivation
+==========
+
+```XmlReceipt``` Qweb report is used when ```iface_print_via_proxy``` config is **True**:
+https://github.com/odoo/odoo/blob/8.0/addons/point_of_sale/static/src/js/screens.js#L1341
+
+But in the case ```iface_print_via_proxy``` config is **False**, ```PosTicket```
+Qweb report is used, and company_logo is not used:
+https://github.com/odoo/odoo/blob/8.0/addons/point_of_sale/static/src/js/screens.js#L984
+
+In other hand, company_logo is loaded using ```/web/binary/company_logo``` controller that returns a 150px wide logo:
+https://github.com/odoo/odoo/blob/8.0/addons/point_of_sale/static/src/js/models.js#L371
+but after that logo is resized to 300px width, so a pixelled logo appears even
+original logo is 300px wide.
+That's why we override how company_logo is loaded. We also resized it to 260px
+(not 300px) wide because appears cut in PDF:
+
+
+Credits
+=======
+
+Contributors
+------------
+
+* Antonio Espinosa <antonioea@antiun.com>
+* Endika Iglesias <endikaig@antiun.com>
+
+Maintainer
+----------
+
+.. image:: http://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: http://odoo-community.org
+
+This module is maintained by the OCA.
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+To contribute to this module, please visit http://odoo-community.org.

pos_ticket_logo/__init__.py

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+# -*- coding: utf-8 -*-
+# Python source code encoding : https://www.python.org/dev/peps/pep-0263/
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright :
+#        (c) 2014 Antiun Ingenieria, SL (Madrid, Spain, http://www.antiun.com)
+#                 Endika Iglesias <endikaig@antiun.com>
+#                 Antonio Espinosa <antonioea@antiun.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################

pos_ticket_logo/__openerp__.py

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+# -*- coding: utf-8 -*-
+# Python source code encoding : https://www.python.org/dev/peps/pep-0263/
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright :
+#        (c) 2014 Antiun Ingenieria, SL (Madrid, Spain, http://www.antiun.com)
+#                 Endika Iglesias <endikaig@antiun.com>
+#                 Antonio Espinosa <antonioea@antiun.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+{
+    'name': 'Pos ticket logo',
+    'category': 'Point Of Sale',
+    'version': '1.0',
+    'depends': [
+        'point_of_sale',
+    ],
+    'data': [
+        'views/pos_ticket_logo_report_receipt_report.xml',
+        'views/pos_template.xml',
+    ],
+    'qweb': [
+        'static/src/xml/pos.xml',
+    ],
+    'author': 'Antiun Ingeniería S.L.',
+    'website': 'http://www.antiun.com',
+    'license': 'AGPL-3',
+    'installable': True,
+}

pos_ticket_logo/static/src/js/main.js

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+/**
+ * # -*- coding: utf-8 -*-
+ * ##############################################################################
+ * #
+ * #    OpenERP, Open Source Management Solution
+ * #    This module copyright :
+ * #        (c) 2014 Antiun Ingenieria, SL (Madrid, Spain, http://www.antiun.com)
+ * #                 Endika Iglesias <endikaig@antiun.com>
+ * #                 Antonio Espinosa <antonioea@antiun.com>
+ * #
+ * #    This program is free software: you can redistribute it and/or modify
+ * #    it under the terms of the GNU Affero General Public License as
+ * #    published by the Free Software Foundation, either version 3 of the
+ * #    License, or (at your option) any later version.
+ * #
+ * #    This program is distributed in the hope that it will be useful,
+ * #    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * #    GNU Affero General Public License for more details.
+ * #
+ * #    You should have received a copy of the GNU Affero General Public License
+ * #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * #
+ * ##############################################################################
+ */
+
+// Check jQuery available
+if (typeof jQuery === 'undefined') { throw new Error('POS Ticket Logo Addon requires jQuery'); }
+
++function ($) {
+    'use strict';
+
+    openerp.pos_ticket_logo = function (instance, module) {
+        var _t = instance.web._t,
+            _lt = instance.web._lt;
+        var QWeb = instance.web.qweb;
+
+        var PosModelParent = instance.point_of_sale.PosModel;
+        instance.point_of_sale.PosModel = instance.point_of_sale.PosModel.extend({
+            load_server_data: function(){
+                var self = this;
+                var loaded = PosModelParent.prototype.load_server_data.apply(this, arguments);
+                $.when(loaded).then(function(){
+                    self.company_logo.onload = function(){
+                        var img = self.company_logo;
+                        var ratio = 1;
+                        var targetwidth = 260;
+                        var maxheight = 120;
+                        if( img.width !== targetwidth ){
+                            ratio = targetwidth / img.width;
+                        }
+                        if( img.height * ratio > maxheight ){
+                            ratio = maxheight / img.height;
+                        }
+                        var width  = Math.floor(img.width * ratio);
+                        var height = Math.floor(img.height * ratio);
+                        var c = document.createElement('canvas');
+                            c.width  = width;
+                            c.height = height;
+                        var ctx = c.getContext('2d');
+                            ctx.drawImage(self.company_logo,0,0, width, height);
+
+                        self.company_logo_base64 = c.toDataURL();
+                        loaded.resolve();
+                    };
+                    self.company_logo.src = '/web/binary/image?model=res.company&id=' + self.company.id + '&field=logo';
+                });
+                return loaded;
+            }
+        });
+    };
+
+}(jQuery);

pos_ticket_logo/static/src/xml/pos.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<templates id="template" xml:space="preserve">
+    <t t-extend="PosTicket">
+        <t t-jquery="[t-esc='widget.pos.company.name']" t-operation="before">
+            <div class="pos-center-align">
+                <img t-att-src="widget.pos.company_logo_base64"/><br />
+            </div>
+        </t>
+    </t>
+</templates>

pos_ticket_logo/views/pos_template.xml

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+<openerp>
+    <data>
+        <template id="pos_ticket_logo_assets_backend"
+                  name="pos_ticket_logo_assets_backend"
+                  inherit_id="point_of_sale.assets_backend">
+            <xpath expr="." position="inside">
+                <script src="/pos_ticket_logo/static/src/js/main.js"
+                        type="text/javascript"></script>
+            </xpath>
+        </template>
+    </data>
+</openerp>

pos_ticket_logo/views/pos_ticket_logo_report_receipt_report.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+<data>
+<template id="pos_ticket_logo_report_receipt_report"
+          inherit_id="point_of_sale.report_receipt">
+
+    <xpath expr="//div[@class='col-xs-12 text-center']/h2" position="after">
+            <img src="/web/binary/company_logo" /><br />
+    </xpath>
+
+    <xpath expr="//div[@class='col-xs-12 text-center']/h2" position="attributes">
+        <attribute name="style">display:none;</attribute>
+    </xpath>
+
+</template>
+</data>
+</openerp>