def generateBarcodeImage(self, barcode_type, data, REQUEST=None):
# huBarcode's DataMatrix support has limitation for data size.
# huBarcode's QRCode support is broken.
# more 1-D barcode types can be added by pyBarcode library.
barcode_type = barcode_type.lower()
if barcode_type == 'datamatrix':
from subprocess import Popen, PIPE
process = Popen(['dmtxwrite'],
stdin=PIPE,
stdout=PIPE,
stderr=PIPE,
close_fds=True)
output, _ = process.communicate(input=data)
elif barcode_type == 'ean13':
from hubarcode.ean13 import EAN13Encoder
encoder = EAN13Encoder(data)
output = encoder.get_imagedata()
elif barcode_type == 'code128':
from hubarcode.code128 import Code128Encoder
encoder = Code128Encoder(data)
encoder.text = '' # get barcode image only
output = encoder.get_imagedata()
elif barcode_type == 'qrcode':
import qrcode
from cStringIO import StringIO
fp = StringIO()
img = qrcode.make(data)
img.save(fp, 'png')
fp.seek(0)
output = fp.read()
else:
raise NotImplementedError('barcode_type=%s is not supported' % barcode_type)
if REQUEST is not None:
REQUEST.RESPONSE.setHeader('Content-Type', 'image/png')
return output
def generate(codec, text, bar_width=3, options=code128_default_options):
''' 生成条码
codec: 'ean13', 'code128'等
text: 文本串
bar_width:
options:
返回一个wx.Bitmap
'''
n = codec.upper()
if n == 'CODE128':
enc = Code128Encoder(text, options=options) # (176, 528) to (57, 405)
elif n== 'EAN13':
enc = EAN13Encoder(text) # (169, 339) to (65, 185)
else:
raise ValueError('%s not yet supported' % codec)
pilimage = resize(enc.get_pilimage(bar_width), codec)
return PilImageToWxBitmap(pilimage)
def my_handler(sender, **kwargs):
#raise IOError(kwargs)
instance = kwargs.get('instance')
# raise IOError(instance)
if instance.barcode_EAN13:
encoder = EAN13Encoder(instance.barcode_EAN13)
encoder.save(MEDIA_ROOT + '/barcodes/' + 'ean13-' + str(instance.id) +
'.png')
b = MyBarcode(product=instance,
barcode='/barcodes/' + 'ean13-' + str(instance.id) +
'.png')
b.save()
if instance.barcode_EAN128:
encoder = Code128Encoder(instance.barcode_EAN128)
encoder.save(MEDIA_ROOT + '/barcodes/' + 'ean128-' + str(instance.id) +
'.png')
b = MyBarcode(product=instance,
barcode='/barcodes/' + 'ean128-' + str(instance.id) +
'.png')
b.save()
"""Example code for ean13 library"""
__revision__ = "$Revision$"
from hubarcode.ean13 import EAN13Encoder
import sys
import logging
logging.getLogger("ean13").setLevel(logging.DEBUG)
logging.getLogger("ean13").addHandler(logging.StreamHandler(sys.stdout))
if __name__ == "__main__":
encoder = EAN13Encoder(sys.argv[1])
encoder.save("test.png")