openmedialibrary_platform/Darwin/lib/python3.4/site-packages/PIL/GbrImagePlugin.py
2014-09-30 21:25:01 +02:00

69 lines
1.5 KiB
Python

#
# The Python Imaging Library
# $Id$
#
# load a GIMP brush file
#
# History:
# 96-03-14 fl Created
#
# Copyright (c) Secret Labs AB 1997.
# Copyright (c) Fredrik Lundh 1996.
#
# See the README file for information on usage and redistribution.
#
from PIL import Image, ImageFile, _binary
i32 = _binary.i32be
def _accept(prefix):
return i32(prefix) >= 20 and i32(prefix[4:8]) == 1
##
# Image plugin for the GIMP brush format.
class GbrImageFile(ImageFile.ImageFile):
format = "GBR"
format_description = "GIMP brush file"
def _open(self):
header_size = i32(self.fp.read(4))
version = i32(self.fp.read(4))
if header_size < 20 or version != 1:
raise SyntaxError("not a GIMP brush")
width = i32(self.fp.read(4))
height = i32(self.fp.read(4))
bytes = i32(self.fp.read(4))
if width <= 0 or height <= 0 or bytes != 1:
raise SyntaxError("not a GIMP brush")
comment = self.fp.read(header_size - 20)[:-1]
self.mode = "L"
self.size = width, height
self.info["comment"] = comment
# Since the brush is so small, we read the data immediately
self.data = self.fp.read(width * height)
def load(self):
if not self.data:
return
# create an image out of the brush data block
self.im = Image.core.new(self.mode, self.size)
self.im.frombytes(self.data)
self.data = b""
#
# registry
Image.register_open("GBR", GbrImageFile, _accept)
Image.register_extension("GBR", ".gbr")