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author | 2022-11-13 23:46:45 +0530 | |
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committer | 2022-11-13 23:46:45 +0530 | |
commit | 9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch) | |
tree | 0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/PIL/GdImageFile.py | |
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Diffstat (limited to 'env/lib/python3.10/site-packages/PIL/GdImageFile.py')
-rw-r--r-- | env/lib/python3.10/site-packages/PIL/GdImageFile.py | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/env/lib/python3.10/site-packages/PIL/GdImageFile.py b/env/lib/python3.10/site-packages/PIL/GdImageFile.py new file mode 100644 index 0000000..1ac3b67 --- /dev/null +++ b/env/lib/python3.10/site-packages/PIL/GdImageFile.py @@ -0,0 +1,95 @@ +# +# The Python Imaging Library. +# $Id$ +# +# GD file handling +# +# History: +# 1996-04-12 fl Created +# +# Copyright (c) 1997 by Secret Labs AB. +# Copyright (c) 1996 by Fredrik Lundh. +# +# See the README file for information on usage and redistribution. +# + + +""" +.. note:: + This format cannot be automatically recognized, so the + class is not registered for use with :py:func:`PIL.Image.open()`. To open a + gd file, use the :py:func:`PIL.GdImageFile.open()` function instead. + +.. warning:: + THE GD FORMAT IS NOT DESIGNED FOR DATA INTERCHANGE. This + implementation is provided for convenience and demonstrational + purposes only. +""" + + +from . import ImageFile, ImagePalette, UnidentifiedImageError +from ._binary import i16be as i16 +from ._binary import i32be as i32 + + +class GdImageFile(ImageFile.ImageFile): + """ + Image plugin for the GD uncompressed format. Note that this format + is not supported by the standard :py:func:`PIL.Image.open()` function. To use + this plugin, you have to import the :py:mod:`PIL.GdImageFile` module and + use the :py:func:`PIL.GdImageFile.open()` function. + """ + + format = "GD" + format_description = "GD uncompressed images" + + def _open(self): + + # Header + s = self.fp.read(1037) + + if not i16(s) in [65534, 65535]: + raise SyntaxError("Not a valid GD 2.x .gd file") + + self.mode = "L" # FIXME: "P" + self._size = i16(s, 2), i16(s, 4) + + true_color = s[6] + true_color_offset = 2 if true_color else 0 + + # transparency index + tindex = i32(s, 7 + true_color_offset) + if tindex < 256: + self.info["transparency"] = tindex + + self.palette = ImagePalette.raw( + "XBGR", s[7 + true_color_offset + 4 : 7 + true_color_offset + 4 + 256 * 4] + ) + + self.tile = [ + ( + "raw", + (0, 0) + self.size, + 7 + true_color_offset + 4 + 256 * 4, + ("L", 0, 1), + ) + ] + + +def open(fp, mode="r"): + """ + Load texture from a GD image file. + + :param fp: GD file name, or an opened file handle. + :param mode: Optional mode. In this version, if the mode argument + is given, it must be "r". + :returns: An image instance. + :raises OSError: If the image could not be read. + """ + if mode != "r": + raise ValueError("bad mode") + + try: + return GdImageFile(fp) + except SyntaxError as e: + raise UnidentifiedImageError("cannot identify this image file") from e |