def CreateQRMatrix(dataToEncode, errLevel=QRErrorCorrectLevel.L):
dataLen = len(dataToEncode)
baseSz = 4 if errLevel == QRErrorCorrectLevel.L else \
5 if errLevel == QRErrorCorrectLevel.M else \
6 if errLevel == QRErrorCorrectLevel.Q else \
7 # errLevel = QRErrorCorrectLevel.H
sz = baseSz if dataLen < 70 else 5 + (dataLen - 70) / 30
qrmtrx = [[]]
while sz<20:
try:
errCorrectEnum = getattr(QRErrorCorrectLevel, errLevel.upper())
qr = QRCode(sz, errCorrectEnum)
qr.addData(dataToEncode)
qr.make()
success=True
break
except TypeError:
sz += 1
if not success:
LOGERROR('Unsuccessful attempt to create QR code')
LOGERROR('Data to encode: (Length: %s, isAscii: %s)', \
len(dataToEncode), isASCII(dataToEncode))
return [[0]], 1
qrmtrx = []
modCt = qr.getModuleCount()
for r in range(modCt):
tempList = [0]*modCt
for c in range(modCt):
# The matrix is transposed by default, from what we normally expect
tempList[c] = 1 if qr.isDark(c,r) else 0
qrmtrx.append(tempList)
return [qrmtrx, modCt]
def setAsciiData(self,
newAscii,
prefSize=160,
errLevel=QRErrorCorrectLevel.L,
repaint=True):
if len(newAscii) == 0:
self.qrmtrx = [[0]]
self.modCt = 1
self.pxScale = 1
return
self.theData = newAscii
sz = 3
success = False
while sz < 20:
try:
self.qr = QRCode(sz, errLevel)
self.qr.addData(self.theData)
self.qr.make()
success = True
break
except TypeError:
sz += 1
if not success:
LOGERROR('Unsuccessful attempt to create QR code')
self.qrmtrx = [[0]]
return
self.qrmtrx = []
self.modCt = self.qr.getModuleCount()
for r in range(self.modCt):
tempList = [0] * self.modCt
for c in range(self.modCt):
tempList[c] = 1 if self.qr.isDark(r, c) else 0
self.qrmtrx.append(tempList)
self.setPreferredSize(prefSize)
