def encode_to_img(string, width=400, border=10):
qrcode = encode(string)
matrix = to_matrix(qrcode)
dotsize = (width - (border * 2)) / qrcode['width']
realwidth = qrcode['width'] * dotsize
rawdata = ''
for row in matrix:
line = ''
for col in row:
line += dotsize * chr(col * 255)
rawdata += dotsize * line
img = img_fromstring('L', (realwidth, realwidth), rawdata)
return img_expand(img, border, 255)
def encode_to_img(string, width=400, border=10):
if not string or not string.strip(b'\x00'):
raise ValueError("You cannot encode a null data in a qrcode.")
qrcode = encode(string)
matrix = to_matrix(qrcode)
dotsize = (width - (border * 2)) / qrcode['width']
realwidth = qrcode['width'] * dotsize
rawdata = ''
for row in matrix:
line = ''
for col in row:
line += dotsize * chr(col * 255)
rawdata += dotsize * line
img = img_fromstring('L', (realwidth, realwidth), rawdata)
return img_expand(img, border, 255)
def encode_to_img(data, width=400, border=10):
if not isinstance(data, bytes):
raise ValueError("Please use encode bytes to image.")
if not data or not data.strip(b'\x00'):
raise ValueError("You cannot encode a null data in a qrcode.")
qrcode = encode(data)
matrix = to_matrix(qrcode)
dotsize = (width - (border * 2)) // qrcode['width']
realwidth = qrcode['width'] * dotsize
rawdata = b''
for row in matrix:
line = b''
for col in row:
line += dotsize * bytes([col * 255])
rawdata += dotsize * line
img = img_frombytes('L', (realwidth, realwidth), rawdata)
return img_expand(img, border, 255)
