def set_ewaybill_barcode(doc, action):
if action == "before_update_after_submit":
if doc.ewaybill:
code = barcode.Code128(str(doc.ewaybill))
display_code = f'{str(doc.ewaybill)[0:4]} {str(doc.ewaybill)[4:8]} {str(doc.ewaybill)[8:12]}'
barcode_svg = code.render(writer_options={'module_width': 0.4, 'module_height': 6, 'text_distance': 3, 'font_size':10}, text=display_code).decode()
doc.ewaybill_barcode = barcode_svg
def btn_print( self ):
if self.spnNumber.value() > 0:
self.lblWork.setText( "Генерация кодов SSCC" )
codes = SSCC_generator.generateSSCC( self.database,
self.commonPart,
self.spnNumber.value() )
self.lblWork.setText( "Генерация изображений и печать." )
self.prgBar.setMaximum( self.spnNumber.value() )
i = 0;
painter = QtGui.QPainter()
painter.begin( self.printer )
all = self.spnNumber.value()
for code in codes:
with open('temp.png', 'wb') as f:
barcode.Code128( code, writer=ImageWriter()).write(f)
i = i + 1
self.prgBar.setValue( i )
pixmap = QtGui.QPixmap( "temp.png" )
pixmap = pixmap.scaled( self.printer.width(),
self.printer.height(),
aspectRatioMode = QtCore.Qt.KeepAspectRatio )
painter.drawPixmap( 0, 0, pixmap )
if i < all:
self.printer.newPage()
painter.end()
self.close()
def get_barcode(request, data, ext):
"""
Render the data as a barcode.
:param request: HttpRequest object
:type request: django.http.request.HttpRequest
:param data: Data to render
:type data: str
:param ext: Filename extension of the preferred format
:type ext: str
:return: Response containing the raw image data
:rtype: HttpResponse
"""
if ext not in ('svg', 'png', 'gif', 'bmp'):
return HttpResponseBadRequest(u"Image extension not supported")
# FIXME: TypeError if PIL is not installed
writer, mime_type = PixelWriter(format=ext), 'image/' + ext
bar = barcode.Code128(data, writer=writer)
response = HttpResponse(content_type=mime_type)
bar.write(response, {
'module_width': 1, # pixels per smallest line
})
return response
import barcode
import bson
print(barcode.__file__)
a = bson.ObjectId()
b = str(a).lower()
c = str(a).upper()
d = str(int(str(a), 16))
print(">>>>>>>>>>>>> lower")
bc = barcode.Code128(b)
bc.save('/home/roman/barcode_128_lower.png')
print(">>>>>>>>>>>>> UPPER")
bc = barcode.Code128(c)
bc.save('/home/roman/barcode_128_upper.png')
print(">>>>>>>>>>>>> NUM")
bc = barcode.Code128(d)
bc.save('/home/roman/barcode_128_num.png')
print(">>>>>>>>>>>>>")
print(len(b), b)
print(len(c), c)
print(len(d), d)
def crear_code128(valor, archivo):
code128 = barcode.Code128(valor, writer=barcode.writer.ImageWriter())
filename = code128.save(archivo)
def get(self, request, *args, **kwargs):
coupon = self.get_object()
barcode_svg = (barcode.Code128(coupon.barcode).render(
{'text': coupon.barcode}))
return HttpResponse(barcode_svg, content_type='image/svg+xml')