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#
# 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"
import Image, BmpImagePlugin
#
# --------------------------------------------------------------------
def i16(c):
return ord(c[0]) + (ord(c[1])<<8)
def i32(c):
return ord(c[0]) + (ord(c[1])<<8) + (ord(c[2])<<16) + (ord(c[3])<<24)
def _accept(prefix):
return prefix[:4] == "\0\0\1\0"
##
# Image plugin for Windows Icon files.
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 = ""
for i in range(i16(s[4:])):
s = self.fp.read(16)
if not m:
m = s
elif ord(s[0]) > ord(m[0]) and ord(s[1]) > ord(m[1]):
m = s
#print "width", ord(s[0])
#print "height", ord(s[1])
#print "colors", ord(s[2])
#print "reserved", ord(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")