def readPngBitString(pngName, ignore=None):
'''read a png into a bitstring. if ignore is top, bottom, left or right,
don't read those bits'''
bitlist = []
reader = png.Reader(pngName)
if ignore is None:
for line in reader.read()[2]:
bitlist.append(project.listToString(list(line)))
elif ignore == 'top' or ignore == 'bottom':
lines = [] # save all, then delete first or second half
for line in reader.read()[2]:
lines.append(line)
if ignore == 'top':
keptLines = lines[:len(lines)/2] # keep the bottom half
else: # ignore the bottom or second half
keptLines = lines[len(lines)/2:] # keep the top half
for line in keptLines:
bitlist.append(project.listToString(list(line)))
elif ignore == 'left' or ignore == 'right':
for line in reader.read()[2]:
listLine = list(line)
if ignore == 'left':
bitlist.append(project.listToString(list(line)[len(listLine)/2:]))
else: # ignore must be the right half, so keep left
bitlist.append(project.listToString(list(line)[:len(listLine)/2]))
bitstring = string.join(bitlist, '')
return bitstring
def readPngBitString(pngName, ignore=None):
'''read a png into a bitstring. if ignore is top, bottom, left or right,
don't read those bits'''
bitlist = []
reader = png.Reader(pngName)
if ignore is None:
for line in reader.read()[2]:
bitlist.append(project.listToString(list(line)))
elif ignore == 'top' or ignore == 'bottom':
lines = [] # save all, then delete first or second half
for line in reader.read()[2]:
lines.append(line)
if ignore == 'top':
keptLines = lines[:len(lines) / 2] # keep the bottom half
else: # ignore the bottom or second half
keptLines = lines[len(lines) / 2:] # keep the top half
for line in keptLines:
bitlist.append(project.listToString(list(line)))
elif ignore == 'left' or ignore == 'right':
for line in reader.read()[2]:
listLine = list(line)
if ignore == 'left':
bitlist.append(
project.listToString(list(line)[len(listLine) / 2:]))
else: # ignore must be the right half, so keep left
bitlist.append(
project.listToString(list(line)[:len(listLine) / 2]))
bitstring = string.join(bitlist, '')
return bitstring
def readPngBitString(pngName):
'''read a png into a bitstring'''
bitlist = []
reader = png.Reader(pngName)
for line in reader.read()[2]:
bitlist.append(project.listToString(list(line)))
bitstring = string.join(bitlist, '')
return bitstring