[IMP] hw_escpos: basic support for japanese receipt and open cashdrawer
bzr revid: fva@openerp.com-20131226165620-6262zfqyxxyryxo0
This commit is contained in:
Frédéric van der Essen
parent
5a8040d909
commit
bf650fa07a
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@ -7,6 +7,7 @@ import base64
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import openerp
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import time
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import random
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import math
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import openerp.addons.hw_proxy.controllers.main as hw_proxy
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import subprocess
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import usb.core
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@ -28,21 +29,46 @@ class EscposDriver(hw_proxy.Proxy):
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{ 'vendor' : 0x04b8, 'product' : 0x0e03, 'name' : 'Epson TM-T20' }
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]
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def get_escpos_printer(self):
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printers = self.connected_usb_devices(self.supported_printers)
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if len(printers) > 0:
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return escpos.printer.Usb(printers[0]['vendor'], printers[0]['product'])
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else:
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return None
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@http.route('/hw_proxy/open_cashbox', type='json', auth='admin')
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def open_cashbox(self):
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print 'ESC/POS: OPEN CASHBOX'
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eprint = self.get_escpos_printer()
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if eprint != None:
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eprint.cashdraw(2)
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eprint.cashdraw(5)
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@http.route('/hw_proxy/print_receipt', type='json', auth='admin')
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def print_receipt(self, receipt):
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print 'ESC/POS: PRINT RECEIPT ' + str(receipt)
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printers = self.connected_usb_devices(self.supported_printers)
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print 'ESC/POS: PRINT RECEIPT'
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eprint = self.get_escpos_printer()
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if eprint != None:
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self.print_receipt_body(eprint,receipt)
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eprint.cut()
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def print_receipt_body(self,eprint,receipt):
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def check(string):
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return string != True and bool(string) and string.strip()
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def price(amount):
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return "{0:.2f}".format(amount)
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return ("{0:."+str(receipt['precision']['price'])+"f}").format(amount)
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def money(amount):
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return ("{0:."+str(receipt['precision']['money'])+"f}").format(amount)
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def quantity(amount):
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if math.floor(amount) != amount:
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return ("{0:."+str(receipt['precision']['quantity'])+"f}").format(amount)
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else:
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return str(amount)
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def printline(left, right='', width=40, ratio=0.5, indent=0):
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lwidth = int(width * ratio)
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@ -61,7 +87,6 @@ class EscposDriver(hw_proxy.Proxy):
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logo = None
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if receipt['company']['logo']:
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img = receipt['company']['logo']
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img = img[img.find(',')+1:]
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@ -76,92 +101,85 @@ class EscposDriver(hw_proxy.Proxy):
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height = int(logo_rgba.size[1]*wfac)
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logo = logo.resize((width,height), Image.ANTIALIAS)
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if len(printers) > 0:
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printer = printers[0]
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# Receipt Header
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if logo:
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eprint._convert_image(logo)
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eprint.text('\n')
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else:
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eprint.set(align='center',type='b',height=2,width=2)
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eprint.text(receipt['company']['name'] + '\n')
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eprint = escpos.printer.Usb(printer['vendor'], printer['product'])
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# Receipt Header
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if logo:
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eprint._convert_image(logo)
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eprint.text('\n')
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eprint.set(align='center',type='b')
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if check(receipt['shop']['name']):
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eprint.text(receipt['shop']['name'] + '\n')
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if check(receipt['company']['contact_address']):
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eprint.text(receipt['company']['contact address'] + '\n')
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if check(receipt['company']['phone']):
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eprint.text('Tel:' + receipt['company']['phone'] + '\n')
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if check(receipt['company']['vat']):
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eprint.text('VAT:' + receipt['company']['vat'] + '\n')
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if check(receipt['company']['email']):
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eprint.text(receipt['company']['email'] + '\n')
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if check(receipt['company']['website']):
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eprint.text(receipt['company']['website'] + '\n')
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if check(receipt['cashier']):
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eprint.text('-'*32+'\n')
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eprint.text('Served by '+receipt['cashier']+'\n')
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# Orderlines
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eprint.text('\n\n')
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eprint.set(align='center')
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for line in receipt['orderlines']:
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pricestr = price(line['price_display'])
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if line['discount'] == 0 and line['unit_name'] == 'Unit(s)' and line['quantity'] == 1:
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eprint.text(printline(line['product_name'],pricestr,ratio=0.6))
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else:
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eprint.set(align='center',type='b',height=2,width=2)
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eprint.text(receipt['company']['name'] + '\n')
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eprint.set(align='center',type='b')
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if check(receipt['shop']['name']):
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eprint.text(receipt['shop']['name'] + '\n')
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if check(receipt['company']['contact_address']):
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eprint.text(receipt['company']['contact address'] + '\n')
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if check(receipt['company']['phone']):
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eprint.text('Tel:' + receipt['company']['phone'] + '\n')
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if check(receipt['company']['vat']):
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eprint.text('VAT:' + receipt['company']['vat'] + '\n')
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if check(receipt['company']['email']):
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eprint.text(receipt['company']['email'] + '\n')
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if check(receipt['company']['website']):
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eprint.text(receipt['company']['website'] + '\n')
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if check(receipt['cashier']):
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eprint.text('-'*32+'\n')
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eprint.text('Served by '+receipt['cashier']+'\n')
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# Orderlines
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eprint.text('\n\n')
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eprint.set(align='center')
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for line in receipt['orderlines']:
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pricestr = price(line['price_display'])
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if line['discount'] == 0 and line['unit_name'] == 'Unit(s)' and line['quantity'] == 1:
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eprint.text(printline(line['product_name'],pricestr,ratio=0.6))
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eprint.text(printline(line['product_name'],ratio=0.6))
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if line['discount'] != 0:
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eprint.text(printline('Discount: '+str(line['discount'])+'%', ratio=0.6, indent=2))
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if line['unit_name'] == 'Unit(s)':
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eprint.text( printline( quantity(line['quantity']) + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
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else:
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eprint.text(printline(line['product_name'],ratio=0.6))
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if line['discount'] != 0:
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eprint.text(printline('Discount: '+str(line['discount'])+'%', ratio=0.6, indent=2))
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if line['unit_name'] == 'Unit(s)':
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eprint.text( printline( str(line['quantity']) + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
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else:
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eprint.text( printline( str(line['quantity']) + line['unit_name'] + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
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eprint.text( printline( quantity(line['quantity']) + line['unit_name'] + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
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# Subtotal if the taxes are not included
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taxincluded = True
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if price(receipt['subtotal']) != price(receipt['total_with_tax']):
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eprint.text(printline('','-------'));
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eprint.text(printline('Subtotal',price(receipt['subtotal']),width=40, ratio=0.6))
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eprint.text(printline('Taxes',price(receipt['total_tax']),width=40, ratio=0.6))
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taxincluded = False
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# Total
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# Subtotal if the taxes are not included
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taxincluded = True
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if money(receipt['subtotal']) != money(receipt['total_with_tax']):
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eprint.text(printline('','-------'));
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eprint.set(align='center',height=2)
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eprint.text(printline(' TOTAL',price(receipt['total_with_tax']),width=40, ratio=0.6))
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eprint.text('\n\n');
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# Paymentlines
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eprint.set(align='center')
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for line in receipt['paymentlines']:
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eprint.text(printline(line['journal'], price(line['amount']), ratio=0.6))
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eprint.text(printline('Subtotal',money(receipt['subtotal']),width=40, ratio=0.6))
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eprint.text(printline('Taxes',money(receipt['total_tax']),width=40, ratio=0.6))
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taxincluded = False
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eprint.text('\n');
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eprint.set(align='center',height=2)
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eprint.text(printline(' CHANGE',price(receipt['change']),width=40, ratio=0.6))
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eprint.set(align='center')
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eprint.text('\n');
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# Extra Payment info
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if receipt['total_discount'] != 0:
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eprint.text(printline('Discounts',price(receipt['total_discount']),width=40, ratio=0.6))
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if taxincluded:
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eprint.text(printline('Taxes',price(receipt['total_tax']),width=40, ratio=0.6))
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# Footer
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eprint.text(receipt['name']+'\n')
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eprint.text( str(receipt['date']['date']).zfill(2)
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+'/'+ str(receipt['date']['month']+1).zfill(2)
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+'/'+ str(receipt['date']['year']).zfill(4)
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+' '+ str(receipt['date']['hour']).zfill(2)
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+':'+ str(receipt['date']['minute']).zfill(2) )
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eprint.cut()
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return
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# Total
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eprint.text(printline('','-------'));
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eprint.set(align='center',height=2)
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eprint.text(printline(' TOTAL',money(receipt['total_with_tax']),width=40, ratio=0.6))
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eprint.text('\n\n');
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# Paymentlines
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eprint.set(align='center')
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for line in receipt['paymentlines']:
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eprint.text(printline(line['journal'], money(line['amount']), ratio=0.6))
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eprint.text('\n');
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eprint.set(align='center',height=2)
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eprint.text(printline(' CHANGE',money(receipt['change']),width=40, ratio=0.6))
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eprint.set(align='center')
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eprint.text('\n');
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# Extra Payment info
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if receipt['total_discount'] != 0:
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eprint.text(printline('Discounts',money(receipt['total_discount']),width=40, ratio=0.6))
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if taxincluded:
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eprint.text(printline('Taxes',money(receipt['total_tax']),width=40, ratio=0.6))
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# Footer
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eprint.text(receipt['name']+'\n')
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eprint.text( str(receipt['date']['date']).zfill(2)
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+'/'+ str(receipt['date']['month']+1).zfill(2)
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+'/'+ str(receipt['date']['year']).zfill(4)
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+' '+ str(receipt['date']['hour']).zfill(2)
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+':'+ str(receipt['date']['minute']).zfill(2) )
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@ -1,3 +1,5 @@
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# -*- coding: utf-8 -*-
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""" ESC/POS Commands (Constants) """
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# Feed control sequences
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@ -30,6 +32,7 @@ TXT_FONT_B = '\x1b\x4d\x01' # Font type B
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TXT_ALIGN_LT = '\x1b\x61\x00' # Left justification
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TXT_ALIGN_CT = '\x1b\x61\x01' # Centering
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TXT_ALIGN_RT = '\x1b\x61\x02' # Right justification
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# Text Encoding
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TXT_ENC_PC437 = '\x1b\x74\x00' # PC437 USA
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@ -46,9 +49,78 @@ TXT_ENC_PC866 = '\x1b\x74\x11' # PC866 Cyrillic #2
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TXT_ENC_PC852 = '\x1b\x74\x12' # PC852 Latin2
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TXT_ENC_PC858 = '\x1b\x74\x13' # PC858 Euro
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TXT_ENC_KATAKANA_MAP = {
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# Maps UTF-8 Katakana symbols to KATAKANA Page Codes
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# Half-Width Katakanas
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'\xef\xbd\xa1':'\xa1', # ｡
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'\xef\xbd\xa2':'\xa2', # ｢
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'\xef\xbd\xa3':'\xa3', # ｣
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'\xef\xbd\xa4':'\xa4', # ､
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'\xef\xbd\xa5':'\xa5', # ･
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# Barcode format
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'\xef\xbd\xa6':'\xa6', # ｦ
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'\xef\xbd\xa7':'\xa7', # ｧ
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'\xef\xbd\xa8':'\xa8', # ｨ
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'\xef\xbd\xa9':'\xa9', # ｩ
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'\xef\xbd\xaa':'\xaa', # ｪ
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'\xef\xbd\xab':'\xab', # ｫ
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'\xef\xbd\xac':'\xac', # ｬ
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'\xef\xbd\xad':'\xad', # ｭ
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'\xef\xbd\xae':'\xae', # ｮ
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'\xef\xbd\xaf':'\xaf', # ｯ
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'\xef\xbd\xb0':'\xb0', # ｰ
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'\xef\xbd\xb1':'\xb1', # ｱ
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'\xef\xbd\xb2':'\xb2', # ｲ
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'\xef\xbd\xb3':'\xb3', # ｳ
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'\xef\xbd\xb4':'\xb4', # ｴ
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'\xef\xbd\xb5':'\xb5', # ｵ
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'\xef\xbd\xb6':'\xb6', # ｶ
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'\xef\xbd\xb7':'\xb7', # ｷ
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'\xef\xbd\xb8':'\xb8', # ｸ
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'\xef\xbd\xb9':'\xb9', # ｹ
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'\xef\xbd\xba':'\xba', # ｺ
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'\xef\xbd\xbb':'\xbb', # ｻ
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'\xef\xbd\xbc':'\xbc', # ｼ
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'\xef\xbd\xbd':'\xbd', # ｽ
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'\xef\xbd\xbe':'\xbe', # ｾ
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'\xef\xbd\xbf':'\xbf', # ｿ
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'\xef\xbe\x80':'\xc0', # ﾀ
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'\xef\xbe\x81':'\xc1', # ﾁ
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'\xef\xbe\x82':'\xc2', # ﾂ
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'\xef\xbe\x83':'\xc3', # ﾃ
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'\xef\xbe\x84':'\xc4', # ﾄ
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'\xef\xbe\x85':'\xc5', # ﾅ
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'\xef\xbe\x86':'\xc6', # ﾆ
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'\xef\xbe\x87':'\xc7', # ﾇ
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'\xef\xbe\x88':'\xc8', # ﾈ
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'\xef\xbe\x89':'\xc9', # ﾉ
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'\xef\xbe\x8a':'\xca', # ﾊ
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'\xef\xbe\x8b':'\xcb', # ﾋ
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'\xef\xbe\x8c':'\xcc', # ﾌ
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'\xef\xbe\x8d':'\xcd', # ﾍ
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'\xef\xbe\x8e':'\xce', # ﾎ
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'\xef\xbe\x8f':'\xcf', # ﾏ
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'\xef\xbe\x90':'\xd0', # ﾐ
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'\xef\xbe\x91':'\xd1', # ﾑ
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'\xef\xbe\x92':'\xd2', # ﾒ
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'\xef\xbe\x93':'\xd3', # ﾓ
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'\xef\xbe\x94':'\xd4', # ﾔ
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'\xef\xbe\x95':'\xd5', # ﾕ
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'\xef\xbe\x96':'\xd6', # ﾖ
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'\xef\xbe\x97':'\xd7', # ﾗ
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'\xef\xbe\x98':'\xd8', # ﾘ
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'\xef\xbe\x99':'\xd9', # ﾙ
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'\xef\xbe\x9a':'\xda', # ﾚ
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'\xef\xbe\x9b':'\xdb', # ﾛ
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'\xef\xbe\x9c':'\xdc', # ﾜ
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'\xef\xbe\x9d':'\xdd', # ﾝ
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'\xef\xbe\x9e':'\xde', # ﾞ
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'\xef\xbe\x9f':'\xdf', # ﾟ
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}
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# Barcod format
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BARCODE_TXT_OFF = '\x1d\x48\x00' # HRI barcode chars OFF
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BARCODE_TXT_ABV = '\x1d\x48\x01' # HRI barcode chars above
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BARCODE_TXT_BLW = '\x1d\x48\x02' # HRI barcode chars below
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@ -11,6 +11,13 @@ import qrcode
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import time
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import copy
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try:
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import jcconv
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except:
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jcconv = None
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print 'ESC/POS: please install jcconv for improved Japanese receipt printing:'
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print ' # pip install jcconv'
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from constants import *
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from exceptions import *
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@ -174,6 +181,8 @@ class Escpos:
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def text(self,txt):
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""" Print Utf8 encoded alpha-numeric text """
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if not txt:
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return
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try:
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txt = txt.decode('utf-8')
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except:
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@ -182,9 +191,16 @@ class Escpos:
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except:
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pass
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def encode_char(char):
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self.extra_chars = 0
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def encode_char(char):
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"""
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Encodes a single utf-8 character into a sequence of
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esc-pos code page change instructions and character declarations
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"""
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char_utf8 = char.encode('utf-8')
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encoded = ''
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encoding = self.encoding
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encoding = self.encoding # we reuse the last encoding to prevent code page switches at every character
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encodings = {
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'cp437': TXT_ENC_PC437,
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'cp850': TXT_ENC_PC850,
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@ -194,38 +210,74 @@ class Escpos:
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'cp863': TXT_ENC_PC863,
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'cp865': TXT_ENC_PC865,
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'cp866': TXT_ENC_PC866,
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'katakana' : TXT_ENC_KATAKANA,
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# TODO Support other encodings not natively supported by python
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}
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remaining = copy.copy(encodings)
|
||||
|
||||
if not encoding :
|
||||
encoding = 'cp437'
|
||||
|
||||
while True:
|
||||
while True: # Trying all encoding until one succeeds
|
||||
try:
|
||||
encoded = char.encode(encoding)
|
||||
break
|
||||
except ValueError:
|
||||
if encoding == 'katakana': # Japanese characters
|
||||
if jcconv:
|
||||
# try to convert japanese text to a half-katakanas
|
||||
kata = jcconv.kata2half(jcconv.hira2kata(char_utf8))
|
||||
if kata != char_utf8:
|
||||
self.extra_chars += len(kata.decode('utf-8')) - 1
|
||||
# the conversion may result in multiple characters
|
||||
return encode_str(kata.decode('utf-8'))
|
||||
else:
|
||||
kata = char_utf8
|
||||
|
||||
if kata in TXT_ENC_KATAKANA_MAP:
|
||||
encoded = TXT_ENC_KATAKANA_MAP[kata]
|
||||
break
|
||||
else:
|
||||
raise ValueError()
|
||||
else:
|
||||
encoded = char.encode(encoding)
|
||||
break
|
||||
|
||||
except ValueError: #the encoding failed, select another one and retry
|
||||
if encoding in remaining:
|
||||
del remaining[encoding]
|
||||
if len(remaining) >= 1:
|
||||
encoding = remaining.items()[0][0]
|
||||
else:
|
||||
print 'COULD NOT ENCODE:',char, char.__repr__()
|
||||
encoded = '\xA8' # could not encode, output error character
|
||||
encoding = 'cp437'
|
||||
encoded = '\xb1' # could not encode, output error character
|
||||
break;
|
||||
|
||||
if encoding != self.encoding:
|
||||
# if the encoding changed, remember it and prefix the character with
|
||||
# the esc-pos encoding change sequence
|
||||
self.encoding = encoding
|
||||
encoded = encodings[encoding] + encoded
|
||||
|
||||
return encoded
|
||||
|
||||
def encode_str(txt):
|
||||
buffer = ''
|
||||
for c in txt:
|
||||
buffer += encode_char(c)
|
||||
return buffer
|
||||
|
||||
buffer = ''
|
||||
for char in txt:
|
||||
buffer += encode_char(char)
|
||||
txt = encode_str(txt)
|
||||
|
||||
if buffer:
|
||||
self._raw(buffer)
|
||||
# if the utf-8 -> codepage conversion inserted extra characters,
|
||||
# remove double spaces to try to restore the original string length
|
||||
# and prevent printing alignment issues
|
||||
while self.extra_chars > 0:
|
||||
dspace = txt.find(' ')
|
||||
if dspace > 0:
|
||||
txt = txt[:dspace] + txt[dspace+1:]
|
||||
self.extra_chars -= 1
|
||||
else:
|
||||
break
|
||||
|
||||
self._raw(txt)
|
||||
|
||||
def set(self, align='left', font='a', type='normal', width=1, height=1):
|
||||
""" Set text properties """
|
||||
|
|
|
|||
|
|
@ -869,6 +869,11 @@ function openerp_pos_models(instance, module){ //module is instance.point_of_sal
|
|||
client: client ? client.name : null ,
|
||||
invoice_id: null, //TODO
|
||||
cashier: cashier ? cashier.name : null,
|
||||
precision: {
|
||||
price: 2,
|
||||
money: 2,
|
||||
quantity: 3,
|
||||
},
|
||||
date: {
|
||||
year: date.getFullYear(),
|
||||
month: date.getMonth(),
|
||||
|
|
|
|||
Loading…
Reference in New Issue