#
# The Python Imaging Library.
# $Id$
#
# Microsoft Image Composer support for PIL
#
# Notes:
# uses TiffImagePlugin.py to read the actual image streams
#
# History:
# 97-01-20 fl Created
#
# Copyright (c) Secret Labs AB 1997.
# Copyright (c) Fredrik Lundh 1997.
#
# See the README file for information on usage and redistribution.
#
from PIL import Image, TiffImagePlugin
from PIL.OleFileIO import MAGIC, OleFileIO
__version__ = "0.1"
#
# --------------------------------------------------------------------
def _accept(prefix):
return prefix[:8] == MAGIC
##
# Image plugin for Microsoft's Image Composer file format.
[文档]class MicImageFile(TiffImagePlugin.TiffImageFile):
format = "MIC"
format_description = "Microsoft Image Composer"
def _open(self):
# read the OLE directory and see if this is a likely
# to be a Microsoft Image Composer file
try:
self.ole = OleFileIO(self.fp)
except IOError:
raise SyntaxError("not an MIC file; invalid OLE file")
# find ACI subfiles with Image members (maybe not the
# best way to identify MIC files, but what the... ;-)
self.images = []
for path in self.ole.listdir():
if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image":
self.images.append(path)
# if we didn't find any images, this is probably not
# an MIC file.
if not self.images:
raise SyntaxError("not an MIC file; no image entries")
self.__fp = self.fp
self.frame = 0
if len(self.images) > 1:
self.category = Image.CONTAINER
self.seek(0)
@property
def n_frames(self):
return len(self.images)
@property
def is_animated(self):
return len(self.images) > 1
[文档] def seek(self, frame):
try:
filename = self.images[frame]
except IndexError:
raise EOFError("no such frame")
self.fp = self.ole.openstream(filename)
TiffImagePlugin.TiffImageFile._open(self)
self.frame = frame
[文档] def tell(self):
return self.frame
#
# --------------------------------------------------------------------
Image.register_open(MicImageFile.format, MicImageFile, _accept)
Image.register_extension(MicImageFile.format, ".mic")