def qrcode(self, text, x, y, max_size, clear=False):
return
if not IMAGE:
raise RuntimeError(
"PIL is required to display QR codes, but it is not installed on your system."
)
code = qr.QRCode(1, qr.QRErrorCorrectLevel.L)
code.addData(text)
code.make()
image = code.makeImage()
width, height = image.size
if width > max_size or height > max_size:
for i in range(max_size):
size = max_size - i
if divmod(width, size)[1] == 0:
image = image.resize((size, size))
break
image.save("qr.png")
self.image(image,
x,
y,
condition='red > 100 or green > 100 or blue > 100',
clear=clear)
if self.auto_commit:
self.display.commit()
def makeQR(data_string, path, level=2, boxSize=4, color=(0, 0, 0, 255)):
quality = {
1: PyQRNative.QRErrorCorrectLevel.L,
2: PyQRNative.QRErrorCorrectLevel.M,
3: PyQRNative.QRErrorCorrectLevel.Q,
4: PyQRNative.QRErrorCorrectLevel.H
}
size = 1
while 1:
try:
print "trying size %s" % size
q = PyQRNative.QRCode(size, quality[level], boxSize=boxSize)
q.addData(data_string)
q.make()
im = q.makeImage()
img = im.convert("RGBA")
#Color
if color != (0, 0, 0, 255):
print "Given color is not black"
pixdata = img.load()
# If pixel is black change to desired color.
for y in xrange(img.size[1]):
for x in xrange(img.size[0]):
if pixdata[x, y] == (0, 0, 0, 255):
pixdata[x, y] = color
img.save(path, format="png")
break
except TypeError as te:
print "failed increasing size"
print str(te)
size += 1
def setUp(self):
self.data = "Test string"
# Create image
qr = PyQRNative.QRCode(4, PyQRNative.QRErrorCorrectLevel.L)
qr.addData(self.data)
qr.make()
self.image = qr.makeImage()
# Set up scanner
self.scanner = zbar.ImageScanner()
self.scanner.parse_config('enable')
def onUsePyQR(self, event):
"""
http://code.google.com/p/pyqrnative/
"""
qr = PyQRNative.QRCode(20, PyQRNative.QRErrorCorrectLevel.L)
qr.addData(self.qrDataTxt.GetValue())
qr.make()
im = qr.makeImage()
qr_file = os.path.join(self.defaultLocation,
self.qrPhotoTxt.GetValue() + ".jpg")
img_file = open(qr_file, 'wb')
im.save(img_file, 'JPEG')
img_file.close()
self.showQRCode(qr_file)
def generate_qr_image(self):
""" Use pyqrnative to build a qr image, and save to disk.
"""
pyqr = PyQRNative.QRCode(4, PyQRNative.QRErrorCorrectLevel.H)
pyqr.addData(self.link_txt)
pyqr.make()
qr_image = pyqr.makeImage()
# Resize the image so it first nicely on the graphic
img_file = open("%s/../resources/temp_qr.png" \
% self.dir_name, "wb")
qr_image = qr_image.resize((320, 320))
qr_image.save(img_file, 'PNG')
img_file.close()
def makeQR(text, dest):
size = 3
# this function mostly taken from http://www.blog.pythonlibrary.org/2012/05/18/creating-qr-codes-with-python/
for size in range(1, 5):
try:
qr = PyQRNative.QRCode(size, PyQRNative.QRErrorCorrectLevel.M)
qr.addData(text)
qr.make()
except TypeError:
# erhöhe size, weil URL zu lang für gewählte size
if size == 5:
raise Exception(
"URL zu lang - size in makeQR erhöhen oder besser URL kürzen"
)
continue
break
im = qr.makeImage()
img_file = open(dest, 'wb')
im.save(img_file, 'PNG')
img_file.close()