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#
# The Python Imaging Library.
# $Id$
#
# Windows Cursor 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.
#
from __future__ import annotations
from . import BmpImagePlugin, Image, ImageFile
from ._binary import i16le as i16
from ._binary import i32le as i32
#
# --------------------------------------------------------------------
def _accept(prefix: bytes) -> bool:
return prefix[:4] == b"\0\0\2\0"
##
# Image plugin for Windows Cursor files.
class CurImageFile(BmpImagePlugin.BmpImageFile):
format = "CUR"
format_description = "Windows Cursor"
def _open(self) -> None:
offset = self.fp.tell()
# check magic
s = self.fp.read(6)
if not _accept(s):
msg = "not a CUR file"
raise SyntaxError(msg)
# pick the largest cursor in the file
m = b""
for i in range(i16(s, 4)):
s = self.fp.read(16)
if not m:
m = s
elif s[0] > m[0] and s[1] > m[1]:
m = s
if not m:
msg = "No cursors were found"
raise TypeError(msg)
# load as bitmap
self._bitmap(i32(m, 12) + offset)
# patch up the bitmap height
self._size = self.size[0], self.size[1] // 2
d, e, o, a = self.tile[0]
self.tile[0] = ImageFile._Tile(d, (0, 0) + self.size, o, a)
#
# --------------------------------------------------------------------
Image.register_open(CurImageFile.format, CurImageFile, _accept)
Image.register_extension(CurImageFile.format, ".cur")
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