def chunk_AFRM(self, offset, bytes):
"AFRM -- next frame follows"
# assertions
if self.count != 0:
raise SyntaxError, "misplaced AFRM chunk"
self.show = 1
self.id = 0
self.count = 1
self.repair = None
s = self.fp.read(bytes)
if len(s) >= 2:
self.id = i16(s)
if len(s) >= 4:
self.count = i16(s[2:4])
if len(s) >= 6:
self.repair = i16(s[4:6])
else:
self.repair = None
if Image.DEBUG:
print "AFRM", self.id, self.count
return s
def chunk_AFRM(self, offset, bytes):
"AFRM -- next frame follows"
# assertions
if self.count != 0:
raise SyntaxError, "misplaced AFRM chunk"
self.show = 1
self.id = 0
self.count = 1
self.repair = None
s = self.fp.read(bytes)
if len(s) >= 2:
self.id = i16(s)
if len(s) >= 4:
self.count = i16(s[2:4])
if len(s) >= 6:
self.repair = i16(s[4:6])
else:
self.repair = None
if Image.DEBUG:
print "AFRM", self.id, self.count
return s
def chunk_PAST(self, offset, bytes):
"PAST -- paste one image into another"
# assertions
if self.count == 0:
raise SyntaxError, "misplaced PAST chunk"
if self.repair is not None:
# we must repair the target image before we
# start pasting
# brute force; a better solution would be to
# update only the dirty rectangles in images[id].
# note that if images[id] doesn't exist, it must
# be created
self.images[self.id] = self.images[self.repair].copy()
self.repair = None
s = self.fp.read(bytes)
im = self.images[i16(s)]
x, y = i32(s[2:6]), i32(s[6:10])
bbox = x, y, im.size[0] + x, im.size[1] + y
if im.mode in ["RGBA"]:
self.images[self.id].paste(im, bbox, im)
else:
# paste without transparency
self.images[self.id].paste(im, bbox)
self.action = ("PAST", )
self.__store()
return s
def chunk_ADEF(self, offset, bytes):
"ADEF -- store image"
# assertions
if self.count != 0:
raise SyntaxError, "misplaced ADEF chunk"
self.show = 0
self.id = 0
self.count = 1
self.repair = None
s = self.fp.read(bytes)
if len(s) >= 2:
self.id = i16(s)
if len(s) >= 4:
self.count = i16(s[2:4])
if Image.DEBUG:
print "ADEF", self.id, self.count
return s
def chunk_ADEF(self, offset, bytes):
"ADEF -- store image"
# assertions
if self.count != 0:
raise SyntaxError, "misplaced ADEF chunk"
self.show = 0
self.id = 0
self.count = 1
self.repair = None
s = self.fp.read(bytes)
if len(s) >= 2:
self.id = i16(s)
if len(s) >= 4:
self.count = i16(s[2:4])
if Image.DEBUG:
print "ADEF", self.id, self.count
return s
def chunk_PAST(self, offset, bytes):
"PAST -- paste one image into another"
# assertions
if self.count == 0:
raise SyntaxError, "misplaced PAST chunk"
if self.repair is not None:
# we must repair the target image before we
# start pasting
# brute force; a better solution would be to
# update only the dirty rectangles in images[id].
# note that if images[id] doesn't exist, it must
# be created
self.images[self.id] = self.images[self.repair].copy()
self.repair = None
s = self.fp.read(bytes)
im = self.images[i16(s)]
x, y = i32(s[2:6]), i32(s[6:10])
bbox = x, y, im.size[0]+x, im.size[1]+y
if im.mode in ["RGBA"]:
# paste with transparency
# FIXME: should handle P+transparency as well
self.images[self.id].paste(im, bbox, im)
else:
# paste without transparency
self.images[self.id].paste(im, bbox)
self.action = ("PAST",)
self.__store()
return s
