#
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# The Python Imaging Library.
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# $Id$
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#
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# Windows Icon support for PIL
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#
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# Notes:
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# uses BmpImagePlugin.py to read the bitmap data.
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#
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# History:
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# 96-05-27 fl Created
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#
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# Copyright (c) Secret Labs AB 1997.
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# Copyright (c) Fredrik Lundh 1996.
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#
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# See the README file for information on usage and redistribution.
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#
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__version__ = "0.1"
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import Image, BmpImagePlugin
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#
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# --------------------------------------------------------------------
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def i16(c):
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return ord(c[0]) + (ord(c[1])<<8)
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def i32(c):
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return ord(c[0]) + (ord(c[1])<<8) + (ord(c[2])<<16) + (ord(c[3])<<24)
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def _accept(prefix):
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return prefix[:4] == "\0\0\1\0"
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##
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# Image plugin for Windows Icon files.
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class IcoImageFile(BmpImagePlugin.BmpImageFile):
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format = "ICO"
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format_description = "Windows Icon"
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def _open(self):
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# check magic
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s = self.fp.read(6)
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if not _accept(s):
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raise SyntaxError, "not an ICO file"
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# pick the largest icon in the file
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m = ""
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for i in range(i16(s[4:])):
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s = self.fp.read(16)
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if not m:
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m = s
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elif ord(s[0]) > ord(m[0]) and ord(s[1]) > ord(m[1]):
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m = s
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#print "width", ord(s[0])
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#print "height", ord(s[1])
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#print "colors", ord(s[2])
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#print "reserved", ord(s[3])
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#print "planes", i16(s[4:])
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#print "bitcount", i16(s[6:])
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#print "bytes", i32(s[8:])
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#print "offset", i32(s[12:])
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# load as bitmap
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self._bitmap(i32(m[12:]))
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# patch up the bitmap height
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self.size = self.size[0], self.size[1]/2
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d, e, o, a = self.tile[0]
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self.tile[0] = d, (0,0)+self.size, o, a
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return
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#
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# --------------------------------------------------------------------
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Image.register_open("ICO", IcoImageFile, _accept)
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Image.register_extension("ICO", ".ico")
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