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python-escpos
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Merge pull request #1 from freeyoung/master 

Several small improvements
This commit is contained in:
Davis Goglin 2014-03-14 08:23:45 -07:00
parent f1d7afded2 8c115bce27
commit 9fdb382c99
5 changed files with 24 additions and 25 deletions
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21
README.md
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@ -10,7 +10,7 @@ In order to start getting access to your printer, you must ensure
you have previously installed the following python modules: you have previously installed the following python modules:
* pyusb (python-usb) * pyusb (python-usb)
* PIL (Python Image Library) * PIL (Python Image Library) or Pillow (recommended)
2. Description 2. Description
------------------------------------------------------------------ ------------------------------------------------------------------
@ -69,16 +69,15 @@ The following example shows how to initialize the Epson TM-TI88IV
*** NOTE: Always finish the sequence with Epson.cut() otherwise *** NOTE: Always finish the sequence with Epson.cut() otherwise
you will endup with weird chars being printed. you will endup with weird chars being printed.
from escpos import * from escpos import printer
""" Seiko Epson Corp. Receipt Printer M129 Definitions (EPSON TM-T88IV) """ p = printer.Usb(0x04b8, 0x0202)
Epson = escpos.Escpos(0x04b8,0x0202,0) p.text("Hello World")
Epson.text("Hello World") p.image("doge.jpg")
Epson.image("logo.gif") p.fullimage("a.really.large.image.png")
Epson.fullimage("a.really.large.image.png") p.barcode('1324354657687','EAN13',64,2,'','')
Epson.barcode p.qr('this is a piece of code')
Epson.barcode('1324354657687','EAN13',64,2,'','') p.cut()
Epson.cut()
5. Links 5. Links
------------------------------------------------------------------ ------------------------------------------------------------------

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24
escpos/escpos.py
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@ -6,11 +6,11 @@
@license: GPL @license: GPL
''' '''
import Image
import qrcode
import time
import os import os
import time
import qrcode
import operator import operator
from PIL import Image
from constants import * from constants import *
from exceptions import * from exceptions import *
@ -37,7 +37,7 @@ class Escpos:
i = 0 i = 0
cont = 0 cont = 0
buffer = "" buffer = ""
self._raw(S_RASTER_N) self._raw(S_RASTER_N)
buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1], 0) buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1], 0)
self._raw(buffer.decode('hex')) self._raw(buffer.decode('hex'))
@ -135,21 +135,21 @@ class Escpos:
break break
elif im_color > (255 * 3 / pattern_len * pattern_len) and im_color <= (255 * 3): elif im_color > (255 * 3 / pattern_len * pattern_len) and im_color <= (255 * 3):
pix_line += im_pattern[-1] pix_line += im_pattern[-1]
break break
pix_line += im_right pix_line += im_right
img_size[0] += im_border[1] img_size[0] += im_border[1]
self._print_image(pix_line, img_size) self._print_image(pix_line, img_size)
def qr(self,text): def qr(self, text):
""" Print QR Code for the provided string """ """ Print QR Code for the provided string """
qr_code = qrcode.QRCode(version=4, box_size=4, border=1) qr_code = qrcode.QRCode(version=4, box_size=4, border=1)
qr_code.add_data(text) qr_code.add_data(text)
qr_code.make(fit=True) qr_code.make(fit=True)
qr_img = qr_code.make_image() qr_img = qr_code.make_image()
im = qr_img._img.convert("RGB")
# Convert the RGB image in printable image # Convert the RGB image in printable image
self._convert_image(im) im = qr_img._img.convert("RGB")
self.image(im)
def barcode(self, code, bc, width, height, pos, font): def barcode(self, code, bc, width, height, pos, font):
""" Print Barcode """ """ Print Barcode """
@ -177,9 +177,9 @@ class Escpos:
self._raw(BARCODE_TXT_BTH) self._raw(BARCODE_TXT_BTH)
elif pos.upper() == "ABOVE": elif pos.upper() == "ABOVE":
self._raw(BARCODE_TXT_ABV) self._raw(BARCODE_TXT_ABV)
else: # DEFAULT POSITION: BELOW else: # DEFAULT POSITION: BELOW
self._raw(BARCODE_TXT_BLW) self._raw(BARCODE_TXT_BLW)
# Type # Type
if bc.upper() == "UPC-A": if bc.upper() == "UPC-A":
self._raw(BARCODE_UPC_A) self._raw(BARCODE_UPC_A)
elif bc.upper() == "UPC-E": elif bc.upper() == "UPC-E":
@ -202,11 +202,11 @@ class Escpos:
else: else:
raise exception.BarcodeCodeError() raise exception.BarcodeCodeError()
def text(self, txt): def text(self, txt):
""" Print alpha-numeric text """ """ Print alpha-numeric text """
if txt: if txt:
self._raw(txt) self._raw(txt.encode('cp936'))
else: else:
raise TextError() raise TextError()

2
escpos/printer.py
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@ -31,7 +31,7 @@ class Usb(Escpos):
self.interface = interface self.interface = interface
self.in_ep = in_ep self.in_ep = in_ep
self.out_ep = out_ep self.out_ep = out_ep
self.open() self.open()
def open(self): def open(self):

2
setup.py
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@ -9,7 +9,7 @@ setup(
download_url='http://python-escpos.googlecode.com/files/python-escpos-1.0.zip', download_url='http://python-escpos.googlecode.com/files/python-escpos-1.0.zip',
description='Python library to manipulate ESC/POS Printers', description='Python library to manipulate ESC/POS Printers',
license='GNU GPL v3', license='GNU GPL v3',
long_description=open('README').read(), long_description=open('README.md').read(),
author='Manuel F Martinez', author='Manuel F Martinez',
author_email='manpaz@bashlinux.com', author_email='manpaz@bashlinux.com',
platforms=['linux'], platforms=['linux'],