def generate_label(self):
# Function to generate a barcode for the wine based off the unique wine
# id. First, it grabs the wine_id however it needs to. Then, it generates
# a unique ITF barcode and stores it as an svg in the temp file and returns
# the file path
self.wine_id = self.get_wine_id()
if self.wine_id != None:
tag_num = (12 - len(str(self.wine_id))) * '0' + str(self.wine_id)
options = {
'dpi': 162,
'module_width': 0.25,
'module_height': 12,
'quiet_zone': 0,
'font_size': 14,
'text_distance': 0.25
}
output = self.temp_dir + '/' + str(self.wine_id)
writer = ImageWriter()
writer.dpi = 600
generate('ITF',
tag_num,
writer=writer,
output=output,
writer_options=options)
return output
else:
raise Exception('Cannot generate barcode because wine has no id')
def eanpng(request, broj):
from barcode.writer import ImageWriter
a = ImageWriter()
a.dpi = 130
image = barcode.get_barcode('ean', broj, writer=a).render()
response = HttpResponse(mimetype="image/png")
image.save(response, "PNG")
return response
def genBar(file, scale, imType):
writer = ImageWriter()
writer.dpi = 100 * scale
writer.module_height = 25.0
writer.format = imType
CODE = barcode.get_barcode_class('code128')
code = CODE(unicode(file), writer)
bar = code.save('barcode')
img = cv2.imread("barcode." + imType)
os.remove("barcode." + imType)
crop_img = img[0:69 * scale, 0:460 * scale]
large = cv2.resize(crop_img, (0, 0), fx=1.5, fy=1.5)
return large
def genera_e_salva(self, codice, nome="Immagine.png", scadenza=None):
generatore = GeneratoreNomeFile('allegati/')
zname = generatore(self, nome)
self.prepara_cartelle(MEDIA_ROOT + zname)
pngfile = open(MEDIA_ROOT + zname, 'wb')
writer = ImageWriter()
writer.dpi = 400
generate("EAN13",
codice,
writer=writer,
output=pngfile,
writer_options={
"quiet_zone": 0.5,
"text_distance": 0.5,
"module_height": 5.5,
"font_size": 13,
})
pngfile.close()
scadenza = scadenza or domani()
self.file = zname
self.nome = nome
self.scadenza = scadenza
self.save()
import barcode
from barcode.writer import ImageWriter
import cv2
writer = ImageWriter()
writer.dpi = 100
CODE = barcode.get_barcode_class('code39')
code = CODE(u'in.org.bseh-HSCER-12345678902018', writer)
bar = code.save('barcode')
img = cv2.imread("barcode.png")
crop_img = img[0:69, 0:460]
# cv2.imwrite("cropped_bar.png", crop_img)
large = cv2.resize(crop_img, (0, 0), fx=1.5, fy=1.5)
cv2.imwrite("cropped_large_bar.png", large)
def genera_e_salva(self, codice, nome="Immagine.png", scadenza=None):
generatore = GeneratoreNomeFile('allegati/')
zname = generatore(self, nome)
self.prepara_cartelle(MEDIA_ROOT + zname)
pngfile = open(MEDIA_ROOT + zname, 'wb')
writer = ImageWriter()
writer.dpi = 400
generate("EAN13", codice, writer=writer, output=pngfile, writer_options={
"quiet_zone": 0.5,
"text_distance": 0.5,
"module_height": 5.5,
"font_size": 13,
})
pngfile.close()
scadenza = scadenza or domani()
self.file = zname
self.nome = nome
self.scadenza = scadenza
self.save()
