2010-07-31 06:52:47 +04:00
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#
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# The Python Imaging Library.
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# $Id$
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#
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# Windows Cursor support for PIL
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#
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# notes:
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# uses BmpImagePlugin.py to read the bitmap data.
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#
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# history:
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# 96-05-27 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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2016-11-26 03:05:56 +03:00
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from __future__ import print_function
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2010-07-31 06:52:47 +04:00
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2017-01-17 16:22:18 +03:00
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from . import Image, BmpImagePlugin
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from ._binary import i8, i16le as i16, i32le as i32
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2010-07-31 06:52:47 +04:00
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2015-08-25 15:27:18 +03:00
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__version__ = "0.1"
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2010-07-31 06:52:47 +04:00
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#
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# --------------------------------------------------------------------
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def _accept(prefix):
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py3k: The big push
There are two main issues fixed with this commit:
* bytes vs. str: All file, image, and palette data are now handled as
bytes. A new _binary module consolidates the hacks needed to do this
across Python versions. tostring/fromstring methods have been renamed to
tobytes/frombytes, but the Python 2.6/2.7 versions alias them to the old
names for compatibility. Users should move to tobytes/frombytes.
One other potentially-breaking change is that text data in image files
(such as tags, comments) are now explicitly handled with a specific
character encoding in mind. This works well with the Unicode str in
Python 3, but may trip up old code expecting a straight byte-for-byte
translation to a Python string. This also required a change to Gohlke's
tags tests (in Tests/test_file_png.py) to expect Unicode strings from
the code.
* True div vs. floor div: Many division operations used the "/" operator
to do floor division, which is now the "//" operator in Python 3. These
were fixed.
As of this commit, on the first pass, I have one failing test (improper
handling of a slice object in a C module, test_imagepath.py) in Python 3,
and three that that I haven't tried running yet (test_imagegl,
test_imagegrab, and test_imageqt). I also haven't tested anything on
Windows. All but the three skipped tests run flawlessly against Pythons
2.6 and 2.7.
2012-10-21 01:01:53 +04:00
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return prefix[:4] == b"\0\0\2\0"
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2010-07-31 06:52:47 +04:00
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2014-07-17 01:12:54 +04:00
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2010-07-31 06:52:47 +04:00
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##
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# Image plugin for Windows Cursor files.
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class CurImageFile(BmpImagePlugin.BmpImageFile):
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format = "CUR"
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format_description = "Windows Cursor"
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def _open(self):
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offset = self.fp.tell()
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# check magic
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s = self.fp.read(6)
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if not _accept(s):
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2014-07-17 01:12:54 +04:00
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raise SyntaxError("not a CUR file")
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2010-07-31 06:52:47 +04:00
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# pick the largest cursor in the file
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py3k: The big push
There are two main issues fixed with this commit:
* bytes vs. str: All file, image, and palette data are now handled as
bytes. A new _binary module consolidates the hacks needed to do this
across Python versions. tostring/fromstring methods have been renamed to
tobytes/frombytes, but the Python 2.6/2.7 versions alias them to the old
names for compatibility. Users should move to tobytes/frombytes.
One other potentially-breaking change is that text data in image files
(such as tags, comments) are now explicitly handled with a specific
character encoding in mind. This works well with the Unicode str in
Python 3, but may trip up old code expecting a straight byte-for-byte
translation to a Python string. This also required a change to Gohlke's
tags tests (in Tests/test_file_png.py) to expect Unicode strings from
the code.
* True div vs. floor div: Many division operations used the "/" operator
to do floor division, which is now the "//" operator in Python 3. These
were fixed.
As of this commit, on the first pass, I have one failing test (improper
handling of a slice object in a C module, test_imagepath.py) in Python 3,
and three that that I haven't tried running yet (test_imagegl,
test_imagegrab, and test_imageqt). I also haven't tested anything on
Windows. All but the three skipped tests run flawlessly against Pythons
2.6 and 2.7.
2012-10-21 01:01:53 +04:00
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m = b""
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2010-07-31 06:52:47 +04:00
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for i in range(i16(s[4:])):
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s = self.fp.read(16)
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if not m:
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m = s
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py3k: The big push
There are two main issues fixed with this commit:
* bytes vs. str: All file, image, and palette data are now handled as
bytes. A new _binary module consolidates the hacks needed to do this
across Python versions. tostring/fromstring methods have been renamed to
tobytes/frombytes, but the Python 2.6/2.7 versions alias them to the old
names for compatibility. Users should move to tobytes/frombytes.
One other potentially-breaking change is that text data in image files
(such as tags, comments) are now explicitly handled with a specific
character encoding in mind. This works well with the Unicode str in
Python 3, but may trip up old code expecting a straight byte-for-byte
translation to a Python string. This also required a change to Gohlke's
tags tests (in Tests/test_file_png.py) to expect Unicode strings from
the code.
* True div vs. floor div: Many division operations used the "/" operator
to do floor division, which is now the "//" operator in Python 3. These
were fixed.
As of this commit, on the first pass, I have one failing test (improper
handling of a slice object in a C module, test_imagepath.py) in Python 3,
and three that that I haven't tried running yet (test_imagegl,
test_imagegrab, and test_imageqt). I also haven't tested anything on
Windows. All but the three skipped tests run flawlessly against Pythons
2.6 and 2.7.
2012-10-21 01:01:53 +04:00
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elif i8(s[0]) > i8(m[0]) and i8(s[1]) > i8(m[1]):
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2010-07-31 06:52:47 +04:00
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m = s
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2016-11-19 03:19:43 +03:00
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# print("width", i8(s[0]))
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# print("height", i8(s[1]))
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# print("colors", i8(s[2]))
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# print("reserved", i8(s[3]))
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# print("hotspot x", i16(s[4:]))
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# print("hotspot y", i16(s[6:]))
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# print("bytes", i32(s[8:]))
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# print("offset", i32(s[12:]))
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2015-11-26 11:56:41 +03:00
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if not m:
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raise TypeError("No cursors were found")
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2010-07-31 06:52:47 +04:00
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# load as bitmap
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self._bitmap(i32(m[12:]) + offset)
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# patch up the bitmap height
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py3k: The big push
There are two main issues fixed with this commit:
* bytes vs. str: All file, image, and palette data are now handled as
bytes. A new _binary module consolidates the hacks needed to do this
across Python versions. tostring/fromstring methods have been renamed to
tobytes/frombytes, but the Python 2.6/2.7 versions alias them to the old
names for compatibility. Users should move to tobytes/frombytes.
One other potentially-breaking change is that text data in image files
(such as tags, comments) are now explicitly handled with a specific
character encoding in mind. This works well with the Unicode str in
Python 3, but may trip up old code expecting a straight byte-for-byte
translation to a Python string. This also required a change to Gohlke's
tags tests (in Tests/test_file_png.py) to expect Unicode strings from
the code.
* True div vs. floor div: Many division operations used the "/" operator
to do floor division, which is now the "//" operator in Python 3. These
were fixed.
As of this commit, on the first pass, I have one failing test (improper
handling of a slice object in a C module, test_imagepath.py) in Python 3,
and three that that I haven't tried running yet (test_imagegl,
test_imagegrab, and test_imageqt). I also haven't tested anything on
Windows. All but the three skipped tests run flawlessly against Pythons
2.6 and 2.7.
2012-10-21 01:01:53 +04:00
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self.size = self.size[0], self.size[1]//2
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2010-07-31 06:52:47 +04:00
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d, e, o, a = self.tile[0]
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2014-07-17 01:12:54 +04:00
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self.tile[0] = d, (0, 0)+self.size, o, a
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2010-07-31 06:52:47 +04:00
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return
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#
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# --------------------------------------------------------------------
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2015-07-04 16:29:58 +03:00
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Image.register_open(CurImageFile.format, CurImageFile, _accept)
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2010-07-31 06:52:47 +04:00
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2015-07-04 16:29:58 +03:00
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Image.register_extension(CurImageFile.format, ".cur")
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