[IMP] point_of_sale: ESC/POS receipt printing

bzr revid: fva@openerp.com-20131220163057-9nu1u7hti0m8wo3h

addons/hw_escpos/__init__.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+##############################################################################
+#    
+#    OpenERP, Open Source Management Solution
+#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
+#
+#    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/>.     
+#
+##############################################################################
+
+import controllers
+
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
+

addons/hw_escpos/__openerp__.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
+#
+#    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': 'ESC/POS Hardware Driver',
+    'version': '1.0',
+    'category': 'Hardware Drivers',
+    'sequence': 6,
+    'summary': 'Hardware Driver for ESC/POS Printers and Cashdrawers',
+    'description': """
+ESC/POS Hardware Driver
+=======================
+
+This module allows openerp to print with ESC/POS compatible printers and
+to open ESC/POS controlled cashdrawers in the point of sale and other modules
+that would need such functionality.
+
+""",
+    'author': 'OpenERP SA',
+    'depends': [],
+    'test': [
+    ],
+    'installable': True,
+    'auto_install': False,
+}
+
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:

addons/hw_escpos/controllers/__init__.py

@@ -0,0 +1,3 @@
+import main
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
+

addons/hw_escpos/controllers/main.py

@@ -0,0 +1,143 @@
+# -*- coding: utf-8 -*-
+import logging
+import simplejson
+import os
+import openerp
+import time
+import random
+import openerp.addons.hw_proxy.controllers.main as hw_proxy
+import subprocess
+import usb.core
+import escpos 
+import escpos.printer
+
+from openerp import http
+from openerp.http import request
+from openerp.addons.web.controllers.main import manifest_list, module_boot, html_template
+
+_logger = logging.getLogger(__name__)
+
+class EscposDriver(hw_proxy.Proxy):
+    
+    supported_printers = [
+        { 'vendor' : 0x04b8, 'product' : 0x0e03, 'name' : 'Epson TM-T20' }
+    ]
+    
+    @http.route('/hw_proxy/open_cashbox', type='json', auth='admin')
+    def open_cashbox(self):
+        print 'ESC/POS: OPEN CASHBOX'
+
+    @http.route('/hw_proxy/print_receipt', type='json', auth='admin')
+    def print_receipt(self, receipt):
+        print 'ESC/POS: PRINT RECEIPT ' + str(receipt)
+
+        printers = self.connected_usb_devices(self.supported_printers)
+
+        def check(string):
+            return string != True and bool(string) and string.strip()
+        
+        def price(amount):
+            return "{0:.2f}".format(amount)
+
+        def printline(left, right='', width=40, ratio=0.5, indent=0):
+            lwidth = int(width * ratio) 
+            rwidth = width - lwidth 
+            lwidth = lwidth - indent
+            
+            left = left[:lwidth]
+            if len(left) != lwidth:
+                left = left + ' ' * (lwidth - len(left))
+
+            right = right[-rwidth:]
+            if len(right) != rwidth:
+                right = ' ' * (rwidth - len(right)) + right
+
+            return ' ' * indent + left + right + '\n'
+
+
+        if len(printers) > 0:
+            printer = printers[0]
+
+            eprint = escpos.printer.Usb(printer['vendor'], printer['product'])
+            #eprint.image(os.path.join(os.path.dirname(__file__),'logo_grayscale.png'))
+            
+            # Receipt Header
+            eprint.set(align='center',type='b',height=2,width=2)
+            eprint.text(receipt['shop']['name'] + '\n')
+
+            eprint.set(align='center',type='b')
+            if check(receipt['company']['name']):
+                eprint.text(receipt['company']['name'] + '\n')
+            if check(receipt['company']['contact_address']):
+                eprint.text(receipt['company']['contact address'] + '\n')
+            if check(receipt['company']['phone']):
+                eprint.text('Tel:' + receipt['company']['phone'] + '\n')
+            if check(receipt['company']['vat']):
+                eprint.text('VAT:' + receipt['company']['vat'] + '\n')
+            if check(receipt['company']['email']):
+                eprint.text(receipt['company']['email'] + '\n')
+            if check(receipt['company']['website']):
+                eprint.text(receipt['company']['website'] + '\n')
+
+            if check(receipt['cashier']):
+                eprint.text('-'*32+'\n')
+                eprint.text('Served by '+receipt['cashier']+'\n')
+
+            # Orderlines
+            eprint.text('\n\n')
+            eprint.set(align='center')
+            for line in receipt['orderlines']:
+                pricestr = price(line['price_display'])
+                if line['discount'] == 0 and line['unit_name'] == 'Unit(s)' and line['quantity'] == 1:
+                    eprint.text(printline(line['product_name'],pricestr,ratio=0.6))
+                else:
+                    eprint.text(printline(line['product_name'],ratio=0.6))
+                    if line['discount'] != 0:
+                        eprint.text(printline('Discount: '+str(line['discount'])+'%', ratio=0.6, indent=2))
+                    if line['unit_name'] == 'Unit(s)':
+                        eprint.text( printline( str(line['quantity']) + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
+                    else:
+                        eprint.text( printline( str(line['quantity']) + line['unit_name'] + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
+
+            # Subtotal if the taxes are not included
+            taxincluded = True
+            if price(receipt['subtotal']) != price(receipt['total_with_tax']):
+                eprint.text(printline('','-------'));
+                eprint.text(printline('Subtotal',price(receipt['subtotal']),width=40, ratio=0.6))
+                eprint.text(printline('Taxes',price(receipt['total_tax']),width=40, ratio=0.6))
+                taxincluded = False
+
+
+            # Total
+            eprint.text(printline('','-------'));
+            eprint.set(align='center',height=2)
+            eprint.text(printline('         TOTAL',price(receipt['total_with_tax']),width=40, ratio=0.6))
+            eprint.text('\n\n');
+            
+            # Paymentlines
+            eprint.set(align='center')
+            for line in receipt['paymentlines']:
+                eprint.text(printline(line['journal'], price(line['amount']), ratio=0.6))
+
+            eprint.text('\n');
+            eprint.set(align='center',height=2)
+            eprint.text(printline('        CHANGE',price(receipt['change']),width=40, ratio=0.6))
+            eprint.set(align='center')
+            eprint.text('\n');
+
+            # Extra Payment info
+            if receipt['total_discount'] != 0:
+                eprint.text(printline('Discounts',price(receipt['total_discount']),width=40, ratio=0.6))
+            if taxincluded:
+                eprint.text(printline('Taxes',price(receipt['total_tax']),width=40, ratio=0.6))
+
+            # Footer
+            eprint.text(receipt['name']+'\n')
+            eprint.text(      str(receipt['date']['date']).zfill(2)
+                        +'/'+ str(receipt['date']['month']+1).zfill(2)
+                        +'/'+ str(receipt['date']['year']).zfill(4)
+                        +' '+ str(receipt['date']['hour']).zfill(2)
+                        +':'+ str(receipt['date']['minute']).zfill(2) )
+            eprint.cut()
+            return
+        

addons/hw_proxy/controllers/main.py

@@ -5,6 +5,10 @@ import os
 import openerp
 import time
 import random
+import subprocess
+import usb.core
+import escpos 
+import escpos.printer
 
 from openerp import http
 from openerp.http import request
@@ -12,12 +16,19 @@ from openerp.addons.web.controllers.main import manifest_list, module_boot, html
 
 _logger = logging.getLogger(__name__)
 
-class ProxyController(http.Controller):
+class Proxy(http.Controller):
     def __init__(self):
         self.scale = 'closed'
         self.scale_weight = 0.0
         pass
 
+    def connected_usb_devices(self,devices):
+        connected = []
+        for device in devices:
+            if usb.core.find(idVendor=device['vendor'], idProduct=device['product']) != None:
+                connected.append(device)
+        return connected
+
     @http.route('/hw_proxy/test_connection', type='json', auth='admin')
     def test_connection(self):
         _logger.info('Received Connection Test from the Point of Sale');

addons/point_of_sale/static/src/js/devices.js

@@ -331,6 +331,7 @@ function openerp_pos_devices(instance,module){ //module is instance.point_of_sal
          *    }
          */
         print_receipt: function(receipt){
+            console.log('PRINT RECEIPT:', receipt);
             return this.message('print_receipt',{receipt: receipt});
         },
 

addons/point_of_sale/static/src/js/models.js

@@ -845,7 +845,8 @@ function openerp_pos_models(instance, module){ //module is instance.point_of_sal
                     date: date.getDate(),       // day of the month 
                     day: date.getDay(),         // day of the week 
                     hour: date.getHours(), 
-                    minute: date.getMinutes() 
+                    minute: date.getMinutes() ,
+                    isostring: date.toISOString(),
                 }, 
                 company:{
                     email: company.email,