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]
class QRCodeWidget(QWidget):
def __init__(self, asciiToEncode='', prefSize=160, errLevel=QRErrorCorrectLevel.L, parent=None):
super(QRCodeWidget, self).__init__()
self.parent = parent
self.qrmtrx = None
self.setAsciiData(asciiToEncode, prefSize, errLevel, repaint=False)
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)
def getModuleCount1D(self):
return self.modCt
def setPreferredSize(self, px, policy='Approx'):
self.pxScale,rem = divmod(int(px), int(self.modCt))
if policy.lower().startswith('approx'):
if rem>self.modCt/2.0:
self.pxScale += 1
elif policy.lower().startswith('atleast'):
if rem>0:
self.pxScale += 1
elif policy.lower().startswith('max'):
pass
else:
LOGERROR('Bad size policy in set qr size')
return self.pxScale*self.modCt
return
def getSize(self):
return self.pxScale*self.modCt
def sizeHint(self):
sz1d = self.pxScale*self.modCt
return QSize(sz1d, sz1d)
def paintEvent(self, e):
qp = QPainter()
qp.begin(self)
self.drawWidget(qp)
qp.end()
def drawWidget(self, qp):
# In case this is not a white background, draw the white boxes
qp.setPen(QColor(255,255,255))
qp.setBrush(QColor(255,255,255))
for r in range(self.modCt):
for c in range(self.modCt):
if not self.qrmtrx[c][r]:
qp.drawRect(*[a*self.pxScale for a in [r,c,1,1]])
# Draw the black tiles
qp.setPen(QColor(0,0,0))
qp.setBrush(QColor(0,0,0))
for r in range(self.modCt):
for c in range(self.modCt):
if self.qrmtrx[c][r]:
qp.drawRect(*[a*self.pxScale for a in [r,c,1,1]])
def mouseDoubleClickEvent(self, *args):
DlgInflatedQR(self.parent, self.theData).exec_()
class QRCodeWidget(QWidget):
def __init__(self,
asciiToEncode='',
prefSize=160,
errLevel=QRErrorCorrectLevel.L,
parent=None):
super(QRCodeWidget, self).__init__()
self.parent = parent
self.qrmtrx = None
self.setAsciiData(asciiToEncode, prefSize, errLevel, repaint=False)
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)
def getModuleCount1D(self):
return self.modCt
def setPreferredSize(self, px, policy='Approx'):
self.pxScale, rem = divmod(int(px), int(self.modCt))
if policy.lower().startswith('approx'):
if rem > self.modCt / 2.0:
self.pxScale += 1
elif policy.lower().startswith('atleast'):
if rem > 0:
self.pxScale += 1
elif policy.lower().startswith('max'):
pass
else:
LOGERROR('Bad size policy in set qr size')
return self.pxScale * self.modCt
return
def getSize(self):
return self.pxScale * self.modCt
def sizeHint(self):
sz1d = self.pxScale * self.modCt
return QSize(sz1d, sz1d)
def paintEvent(self, e):
qp = QPainter()
qp.begin(self)
self.drawWidget(qp)
qp.end()
def drawWidget(self, qp):
# In case this is not a white background, draw the white boxes
qp.setPen(QColor(255, 255, 255))
qp.setBrush(QColor(255, 255, 255))
for r in range(self.modCt):
for c in range(self.modCt):
if not self.qrmtrx[c][r]:
qp.drawRect(*[a * self.pxScale for a in [r, c, 1, 1]])
# Draw the black tiles
qp.setPen(QColor(0, 0, 0))
qp.setBrush(QColor(0, 0, 0))
for r in range(self.modCt):
for c in range(self.modCt):
if self.qrmtrx[c][r]:
qp.drawRect(*[a * self.pxScale for a in [r, c, 1, 1]])
def mouseDoubleClickEvent(self, *args):
DlgInflatedQR(self.parent, self.theData).exec_()