Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pillow-10.4.0-py3.8-linux-x86_64.egg/PIL/CurImagePlugin.py: 39%

1# 

2# The Python Imaging Library. 

3# $Id$ 

4# 

5# Windows Cursor support for PIL 

6# 

7# notes: 

8# uses BmpImagePlugin.py to read the bitmap data. 

9# 

10# history: 

11# 96-05-27 fl Created 

12# 

13# Copyright (c) Secret Labs AB 1997. 

14# Copyright (c) Fredrik Lundh 1996. 

15# 

16# See the README file for information on usage and redistribution. 

17# 

18from __future__ import annotations 

19 

20from . import BmpImagePlugin, Image 

21from ._binary import i16le as i16 

22from ._binary import i32le as i32 

23 

24# 

25# -------------------------------------------------------------------- 

26 

27 

28def _accept(prefix: bytes) -> bool: 

29 return prefix[:4] == b"\0\0\2\0" 

30 

31 

32## 

33# Image plugin for Windows Cursor files. 

34 

35 

36class CurImageFile(BmpImagePlugin.BmpImageFile): 

37 format = "CUR" 

38 format_description = "Windows Cursor" 

39 

40 def _open(self) -> None: 

41 offset = self.fp.tell() 

42 

43 # check magic 

44 s = self.fp.read(6) 

45 if not _accept(s): 

46 msg = "not a CUR file" 

47 raise SyntaxError(msg) 

48 

49 # pick the largest cursor in the file 

50 m = b"" 

51 for i in range(i16(s, 4)): 

52 s = self.fp.read(16) 

53 if not m: 

54 m = s 

55 elif s[0] > m[0] and s[1] > m[1]: 

56 m = s 

57 if not m: 

58 msg = "No cursors were found" 

59 raise TypeError(msg) 

60 

61 # load as bitmap 

62 self._bitmap(i32(m, 12) + offset) 

63 

64 # patch up the bitmap height 

65 self._size = self.size[0], self.size[1] // 2 

66 d, e, o, a = self.tile[0] 

67 self.tile[0] = d, (0, 0) + self.size, o, a 

68 

69 

70# 

71# -------------------------------------------------------------------- 

72 

73Image.register_open(CurImageFile.format, CurImageFile, _accept) 

74 

75Image.register_extension(CurImageFile.format, ".cur")