108 lines
2.6 KiB
Python
108 lines
2.6 KiB
Python
#
|
|
# 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 __future__ import annotations
|
|
|
|
import olefile
|
|
|
|
from . import Image, TiffImagePlugin
|
|
|
|
#
|
|
# --------------------------------------------------------------------
|
|
|
|
|
|
def _accept(prefix):
|
|
return prefix[:8] == olefile.MAGIC
|
|
|
|
|
|
##
|
|
# Image plugin for Microsoft's Image Composer file format.
|
|
|
|
|
|
class MicImageFile(TiffImagePlugin.TiffImageFile):
|
|
format = "MIC"
|
|
format_description = "Microsoft Image Composer"
|
|
_close_exclusive_fp_after_loading = False
|
|
|
|
def _open(self):
|
|
# read the OLE directory and see if this is a likely
|
|
# to be a Microsoft Image Composer file
|
|
|
|
try:
|
|
self.ole = olefile.OleFileIO(self.fp)
|
|
except OSError as e:
|
|
msg = "not an MIC file; invalid OLE file"
|
|
raise SyntaxError(msg) from e
|
|
|
|
# find ACI subfiles with Image members (maybe not the
|
|
# best way to identify MIC files, but what the... ;-)
|
|
|
|
self.images = [
|
|
path
|
|
for path in self.ole.listdir()
|
|
if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image"
|
|
]
|
|
|
|
# if we didn't find any images, this is probably not
|
|
# an MIC file.
|
|
if not self.images:
|
|
msg = "not an MIC file; no image entries"
|
|
raise SyntaxError(msg)
|
|
|
|
self.frame = None
|
|
self._n_frames = len(self.images)
|
|
self.is_animated = self._n_frames > 1
|
|
|
|
self.__fp = self.fp
|
|
self.seek(0)
|
|
|
|
def seek(self, frame):
|
|
if not self._seek_check(frame):
|
|
return
|
|
try:
|
|
filename = self.images[frame]
|
|
except IndexError as e:
|
|
msg = "no such frame"
|
|
raise EOFError(msg) from e
|
|
|
|
self.fp = self.ole.openstream(filename)
|
|
|
|
TiffImagePlugin.TiffImageFile._open(self)
|
|
|
|
self.frame = frame
|
|
|
|
def tell(self):
|
|
return self.frame
|
|
|
|
def close(self):
|
|
self.__fp.close()
|
|
self.ole.close()
|
|
super().close()
|
|
|
|
def __exit__(self, *args):
|
|
self.__fp.close()
|
|
self.ole.close()
|
|
super().__exit__()
|
|
|
|
|
|
#
|
|
# --------------------------------------------------------------------
|
|
|
|
Image.register_open(MicImageFile.format, MicImageFile, _accept)
|
|
|
|
Image.register_extension(MicImageFile.format, ".mic")
|