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[WIP] hw_escpos: printing client-side defined xml templates 

bzr revid: fva@openerp.com-20140317132906-uyr7h1oce8pptny9
This commit is contained in:
Frédéric van der Essen 2014-03-17 14:29:06 +01:00
parent 2ab61cf001
commit d5a730a0b3
2 changed files with 181 additions and 6 deletions
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9
addons/hw_escpos/controllers/main.py
View File

@ -118,6 +118,8 @@ class EscposDriver(Thread):
self.open_cashbox(printer)
elif task == 'printstatus':
self.print_status(printer)
elif task == 'testprint':
printer.receipt(testreceipt)
elif task == 'status':
pass
@ -280,7 +282,7 @@ driver = EscposDriver()
hw_proxy.drivers['escpos'] = driver
driver.push_task('printstatus')
driver.push_task('testprint')
class EscposProxy(hw_proxy.Proxy):
@ -293,4 +295,9 @@ class EscposProxy(hw_proxy.Proxy):
def print_receipt(self, receipt):
_logger.info('ESC/POS: PRINT RECEIPT')
driver.push_task('receipt',receipt)
@http.route('/hw_proxy/print_xml_receipt', type='json', auth='none', cors='*')
def print_receipt(self, receipt):
_logger.info('ESC/POS: PRINT XML RECEIPT')
driver.push_task('xml_receipt',receipt)

178
addons/hw_escpos/escpos/escpos.py
View File

@ -17,6 +17,8 @@ import io
import base64
import math
import md5
import re
import xml.etree.ElementTree as ET
from PIL import Image
@ -30,13 +32,20 @@ except ImportError:
from constants import *
from exceptions import *
# class RBuffer:
# def __init__(self,width=40,margin=10,tabwidth=2,indent=0):
# self.width = width
# self.margin = margin
# self.tabwidth = tabwidth
# self.indent = indent
# self.lines = []
class Escpos:
""" ESC/POS Printer object """
device = None
encoding = None
img_cache = {}
def _check_image_size(self, size):
""" Check and fix the size of the image to 32 bits """
if size % 32 == 0:
@ -48,7 +57,6 @@ class Escpos:
else:
return (image_border / 2, (image_border / 2) + 1)
def _print_image(self, line, size):
""" Print formatted image """
i = 0
@ -101,7 +109,6 @@ class Escpos:
return raw
def _convert_image(self, im):
""" Parse image and prepare it to a printable format """
pixels = []
@ -197,8 +204,7 @@ class Escpos:
# Convert the RGB image in printable image
self._convert_image(im)
def barcode(self, code, bc, width, height, pos, font):
def barcode(self, code, bc, width=255, height=2, pos='below', font='a'):
""" Print Barcode """
# Align Bar Code()
self._raw(TXT_ALIGN_CT)
@ -249,6 +255,168 @@ class Escpos:
else:
raise exception.BarcodeCodeError()
def receipt(self,xml):
root = ET.fromstring(xml)
open_cashdrawer = False
cut_receipt = True
width = 48
ratio = 0.5
indent = 0
tabwidth = 2
if root.tag != 'receipt':
print 'Error: expecting receipt xml and not '+str(root.tag)
return
if 'open-cashdrawer' in root.attrib:
open_cashdrawer = root.attrib['open-cashdrawer'] == 'true'
if 'cut' in root.attrib:
cut_receipt = root.attrib['cut'] == 'true'
# def justify(string,width):
# words = string.split()
# lines = []
# line = ''
# linew = 0
# for w in words:
# if len(w) <= width - len(line):
# if len(line) > 0:
# line += ' '
# line += w
# else:
# if len(line) > 0:
# lines.append(line.ljust(width))
# line = ''
# line += w
# if len(line) > 0:
# lines.append(line.ljust(width))
# return lines
#
# def strindent(indent,string):
# ind = tabwidth * indent
# rem = width - ind
# lines = justify(string,rem)
# txt = ''
# for l in lines:
# txt += ' '*ind + '\n'
#
# return txt
def strclean(string):
if not string:
string = ''
string = string.strip()
string = re.sub('\s+',' ',string)
return string
def print_ul(elem, indent=0):
bullets = ['-','-']
bullet = ' '+bullets[indent % 2]+' '
if elem.tag == 'ul':
for lelem in elem:
if lelem.tag == 'li':
self.text(' ' * indent * tabwidth + bullet + strclean(lelem.text)+'\n')
elif lelem.tag == 'ul':
print_ul(lelem,indent+1)
elif lelem.tag == 'ol':
print_old(lelem,indent+1)
def print_ol(elem, indent=0):
cwidth = len(str(len(elem))) + 2
i = 1
for lelem in elem:
if lelem.tag == 'li':
self.text(' ' * indent * tabwidth + ' ' + (str(i)+'.').ljust(cwidth)+strclean(lelem.text)+'\n')
i += 1
elif lelem.tag == 'ul':
print_ul(lelem,indent+1)
elif lelem.tag == 'ol':
print_ol(lelem,indent+1)
for elem in root:
if elem.tag == 'line':
left = strclean(elem.text)
right = ''
for lelem in elem:
if lelem.tag == 'left':
left = strclean(lelem.text)
print 'left:'+left
elif lelem.tag == 'right':
right = strclean(lelem.text)
print 'right:'+right
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
line = ' ' * indent + left + right + '\n'
print line
self.text(line)
elif elem.tag == 'img':
if src in elem.attrib and 'data:' in elem.attrib['src']:
self.print_base64_image(elem.attrib['src'])
elif elem.tag == 'p':
self.text(strclean(elem.text)+'\n')
elif elem.tag == 'h1':
self.set(align='left', font='a', type='b', width=2, height=2)
self._raw('\x1b\x21\x30')
self._raw('\x1b\x45\x01')
self.text(strclean(elem.text)+'\n')
self.set()
elif elem.tag == 'h2':
self.set(align='left', font='a', type='bu', width=1, height=2)
self._raw('\x1b\x21\x30')
self.text(strclean(elem.text)+'\n')
self.set()
elif elem.tag == 'h3':
self.set(align='left', font='a', type='u', width=1, height=2)
self._raw('\x1b\x45\x01')
self.text(strclean(elem.text)+'\n')
self.set()
elif elem.tag == 'h4':
self.set(align='left', font='a', type='bu', width=1, height=2)
self.text(strclean(elem.text)+'\n')
self.set()
elif elem.tag == 'h5':
self.set(align='left', font='a', type='u', width=1, height=1)
self._raw('\x1b\x45\x01')
self.text(strclean(elem.text)+'\n')
self.set()
elif elem.tag == 'pre':
self.text(elem.text)
elif elem.tag == 'cut':
self.cut()
elif elem.tag == 'ul':
print_ul(elem)
elif elem.tag == 'ol':
print_ol(elem)
elif elem.tag == 'hr':
self.text('-'*width+'\n')
elif elem.tag == 'br':
self.text('\n')
elif elem.tag == 'barcode' and 'encoding' in elem.attrib:
self.barcode(strclean(elem.text),elem.attrib['encoding'])
elif elem.tag == 'partialcut':
self.cut(mode='part')
elif elem.tag == 'cashdraw':
self.cashdraw(2)
self.cashdraw(5)
if cut_receipt:
self.cut()
if open_cashdrawer:
self.cashdraw(2)
self.cashdraw(5)
def text(self,txt):
""" Print Utf8 encoded alpha-numeric text """
if not txt: