#
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# The Python Imaging Library
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# $Id$
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#
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# load a GIMP brush file
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#
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# History:
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# 96-03-14 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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import Image, ImageFile
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def i32(c):
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return ord(c[3]) + (ord(c[2])<<8) + (ord(c[1])<<16) + (ord(c[0])<<24L)
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def _accept(prefix):
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return i32(prefix) >= 20 and i32(prefix[4:8]) == 1
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##
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# Image plugin for the GIMP brush format.
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class GbrImageFile(ImageFile.ImageFile):
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format = "GBR"
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format_description = "GIMP brush file"
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def _open(self):
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header_size = i32(self.fp.read(4))
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version = i32(self.fp.read(4))
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if header_size < 20 or version != 1:
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raise SyntaxError, "not a GIMP brush"
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width = i32(self.fp.read(4))
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height = i32(self.fp.read(4))
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bytes = i32(self.fp.read(4))
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if width <= 0 or height <= 0 or bytes != 1:
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raise SyntaxError, "not a GIMP brush"
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comment = self.fp.read(header_size - 20)[:-1]
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self.mode = "L"
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self.size = width, height
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self.info["comment"] = comment
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# Since the brush is so small, we read the data immediately
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self.data = self.fp.read(width * height)
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def load(self):
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if not self.data:
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return
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# create an image out of the brush data block
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self.im = Image.core.new(self.mode, self.size)
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self.im.fromstring(self.data)
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self.data = ""
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#
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# registry
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Image.register_open("GBR", GbrImageFile, _accept)
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Image.register_extension("GBR", ".gbr")
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