Source code for PIL.IcoImagePlugin

#
# The Python Imaging Library.
# $Id$
#
# Windows Icon support for PIL
#
# Notes:
#       uses BmpImagePlugin.py to read the bitmap data.
#
# History:
#       96-05-27 fl     Created
#
# Copyright (c) Secret Labs AB 1997.
# Copyright (c) Fredrik Lundh 1996.
#
# See the README file for information on usage and redistribution.
#


__version__ = "0.1"

from PIL import Image, BmpImagePlugin, _binary


#
# --------------------------------------------------------------------

i8 = _binary.i8
i16 = _binary.i16le
i32 = _binary.i32le


def _accept(prefix):
    return prefix[:4] == b"\0\0\1\0"

##
# Image plugin for Windows Icon files.

[docs]class IcoImageFile(BmpImagePlugin.BmpImageFile): format = "ICO" format_description = "Windows Icon" def _open(self): # check magic s = self.fp.read(6) if not _accept(s): raise SyntaxError("not an ICO file") # pick the largest icon in the file m = b"" for i in range(i16(s[4:])): s = self.fp.read(16) if not m: m = s elif i8(s[0]) > i8(m[0]) and i8(s[1]) > i8(m[1]): m = s #print "width", i8(s[0]) #print "height", i8(s[1]) #print "colors", i8(s[2]) #print "reserved", i8(s[3]) #print "planes", i16(s[4:]) #print "bitcount", i16(s[6:]) #print "bytes", i32(s[8:]) #print "offset", i32(s[12:]) # load as bitmap self._bitmap(i32(m[12:])) # patch up the bitmap height self.size = self.size[0], self.size[1]//2 d, e, o, a = self.tile[0] self.tile[0] = d, (0,0)+self.size, o, a return # # --------------------------------------------------------------------
Image.register_open("ICO", IcoImageFile, _accept) Image.register_extension("ICO", ".ico")