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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 | |
| 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] = d, (0, 0) + self.size, o, a | |
| # | |
| # -------------------------------------------------------------------- | |
| Image.register_open(CurImageFile.format, CurImageFile, _accept) | |
| Image.register_extension(CurImageFile.format, ".cur") | |