366 lines
13 KiB
Python
366 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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import commands
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import logging
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import simplejson
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import os
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import os.path
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import io
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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 md5
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import openerp.addons.hw_proxy.controllers.main as hw_proxy
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import pickle
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import re
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import subprocess
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import traceback
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try:
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from .. escpos import *
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from .. escpos.exceptions import *
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from .. escpos.printer import Usb
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except ImportError:
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escpos = printer = None
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from threading import Thread, Lock
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from Queue import Queue, Empty
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try:
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import usb.core
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except ImportError:
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usb = None
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from PIL import Image
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from openerp import http
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from openerp.http import request
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from openerp.tools.translate import _
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_logger = logging.getLogger(__name__)
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# workaround https://bugs.launchpad.net/openobject-server/+bug/947231
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# related to http://bugs.python.org/issue7980
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from datetime import datetime
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datetime.strptime('2012-01-01', '%Y-%m-%d')
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class EscposDriver(Thread):
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def __init__(self):
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Thread.__init__(self)
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self.queue = Queue()
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self.lock = Lock()
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self.status = {'status':'connecting', 'messages':[]}
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def connected_usb_devices(self):
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connected = []
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# printers can either define bDeviceClass=7, or they can define one of
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# their interfaces with bInterfaceClass=7. This class checks for both.
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class FindUsbClass(object):
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def __init__(self, usb_class):
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self._class = usb_class
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def __call__(self, device):
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# first, let's check the device
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if device.bDeviceClass == self._class:
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return True
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# transverse all devices and look through their interfaces to
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# find a matching class
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for cfg in device:
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intf = usb.util.find_descriptor(cfg, bInterfaceClass=self._class)
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if intf is not None:
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return True
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return False
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printers = usb.core.find(find_all=True, custom_match=FindUsbClass(7))
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# if no printers are found after this step we will take the
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# first epson or star device we can find.
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# epson
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if not printers:
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printers = usb.core.find(find_all=True, idVendor=0x04b8)
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# star
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if not printers:
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printers = usb.core.find(find_all=True, idVendor=0x0519)
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for printer in printers:
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connected.append({
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'vendor': printer.idVendor,
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'product': printer.idProduct,
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'name': usb.util.get_string(printer, 256, printer.iManufacturer) + " " + usb.util.get_string(printer, 256, printer.iProduct)
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})
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return connected
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def lockedstart(self):
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with self.lock:
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if not self.isAlive():
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self.daemon = True
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self.start()
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def get_escpos_printer(self):
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printers = self.connected_usb_devices()
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if len(printers) > 0:
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self.set_status('connected','Connected to '+printers[0]['name'])
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return Usb(printers[0]['vendor'], printers[0]['product'])
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else:
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self.set_status('disconnected','Printer Not Found')
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return None
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def get_status(self):
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self.push_task('status')
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return self.status
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def open_cashbox(self,printer):
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printer.cashdraw(2)
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printer.cashdraw(5)
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def set_status(self, status, message = None):
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_logger.info(status+' : '+ (message or 'no message'))
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if status == self.status['status']:
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if message != None and (len(self.status['messages']) == 0 or message != self.status['messages'][-1]):
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self.status['messages'].append(message)
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else:
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self.status['status'] = status
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if message:
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self.status['messages'] = [message]
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else:
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self.status['messages'] = []
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if status == 'error' and message:
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_logger.error('ESC/POS Error: '+message)
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elif status == 'disconnected' and message:
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_logger.warning('ESC/POS Device Disconnected: '+message)
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def run(self):
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printer = None
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if not escpos:
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_logger.error('ESC/POS cannot initialize, please verify system dependencies.')
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return
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while True:
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try:
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error = True
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timestamp, task, data = self.queue.get(True)
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printer = self.get_escpos_printer()
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if printer == None:
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if task != 'status':
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self.queue.put((timestamp,task,data))
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error = False
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time.sleep(5)
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continue
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elif task == 'receipt':
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if timestamp >= time.time() - 1 * 60 * 60:
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self.print_receipt_body(printer,data)
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printer.cut()
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elif task == 'xml_receipt':
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if timestamp >= time.time() - 1 * 60 * 60:
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printer.receipt(data)
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elif task == 'cashbox':
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if timestamp >= time.time() - 12:
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self.open_cashbox(printer)
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elif task == 'printstatus':
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self.print_status(printer)
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elif task == 'status':
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pass
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error = False
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except NoDeviceError as e:
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print "No device found %s" %str(e)
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except HandleDeviceError as e:
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print "Impossible to handle the device due to previous error %s" % str(e)
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except TicketNotPrinted as e:
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print "The ticket does not seems to have been fully printed %s" % str(e)
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except NoStatusError as e:
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print "Impossible to get the status of the printer %s" % str(e)
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except Exception as e:
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self.set_status('error', str(e))
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errmsg = str(e) + '\n' + '-'*60+'\n' + traceback.format_exc() + '-'*60 + '\n'
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_logger.error(errmsg);
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finally:
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if error:
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self.queue.put((timestamp, task, data))
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if printer:
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printer.close()
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def push_task(self,task, data = None):
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self.lockedstart()
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self.queue.put((time.time(),task,data))
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def print_status(self,eprint):
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localips = ['0.0.0.0','127.0.0.1','127.0.1.1']
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ips = [ c.split(':')[1].split(' ')[0] for c in commands.getoutput("/sbin/ifconfig").split('\n') if 'inet addr' in c ]
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ips = [ ip for ip in ips if ip not in localips ]
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eprint.text('\n\n')
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eprint.set(align='center',type='b',height=2,width=2)
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eprint.text('PosBox Status\n')
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eprint.text('\n')
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eprint.set(align='center')
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if len(ips) == 0:
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eprint.text('ERROR: Could not connect to LAN\n\nPlease check that the PosBox is correc-\ntly connected with a network cable,\n that the LAN is setup with DHCP, and\nthat network addresses are available')
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elif len(ips) == 1:
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eprint.text('IP Address:\n'+ips[0]+'\n')
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else:
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eprint.text('IP Addresses:\n')
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for ip in ips:
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eprint.text(ip+'\n')
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if len(ips) >= 1:
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eprint.text('\nHomepage:\nhttp://'+ips[0]+':8069\n')
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eprint.text('\n\n')
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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:."+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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rwidth = width - lwidth
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lwidth = lwidth - indent
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left = left[:lwidth]
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if len(left) != lwidth:
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left = left + ' ' * (lwidth - len(left))
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right = right[-rwidth:]
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if len(right) != rwidth:
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right = ' ' * (rwidth - len(right)) + right
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return ' ' * indent + left + right + '\n'
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def print_taxes():
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taxes = receipt['tax_details']
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for tax in taxes:
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eprint.text(printline(tax['tax']['name'],price(tax['amount']), width=40,ratio=0.6))
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# Receipt Header
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if receipt['company']['logo']:
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eprint.set(align='center')
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eprint.print_base64_image(receipt['company']['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.set(align='center',type='b')
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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['header']):
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eprint.text(receipt['header']+'\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.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( 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 money(receipt['subtotal']) != money(receipt['total_with_tax']):
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eprint.text(printline('','-------'));
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eprint.text(printline(_('Subtotal'),money(receipt['subtotal']),width=40, ratio=0.6))
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print_taxes()
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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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# 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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print_taxes()
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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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if check(receipt['footer']):
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eprint.text('\n'+receipt['footer']+'\n\n')
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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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driver = EscposDriver()
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driver.push_task('printstatus')
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hw_proxy.drivers['escpos'] = driver
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class EscposProxy(hw_proxy.Proxy):
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@http.route('/hw_proxy/open_cashbox', type='json', auth='none', cors='*')
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def open_cashbox(self):
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_logger.info('ESC/POS: OPEN CASHBOX')
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driver.push_task('cashbox')
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@http.route('/hw_proxy/print_receipt', type='json', auth='none', cors='*')
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def print_receipt(self, receipt):
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_logger.info('ESC/POS: PRINT RECEIPT')
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driver.push_task('receipt',receipt)
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@http.route('/hw_proxy/print_xml_receipt', type='json', auth='none', cors='*')
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def print_xml_receipt(self, receipt):
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_logger.info('ESC/POS: PRINT XML RECEIPT')
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driver.push_task('xml_receipt',receipt)
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