Merge branch 'main' into deprecate-getsize

CHANGES.rst

@@ -5,6 +5,36 @@ Changelog (Pillow)
 9.2.0 (unreleased)
 ------------------
 
+- Fixed null check for fribidi_version_info in FriBiDi shim #6376
+  [nulano]
+
+- Added GIF decompression bomb check #6402
+  [radarhere]
+
+- Handle PCF fonts files with less than 256 characters #6386
+  [dawidcrivelli, radarhere]
+
+- Improved GIF optimize condition #6378
+  [raygard, radarhere]
+
+- Reverted to __array_interface__ with the release of NumPy 1.23 #6394
+  [radarhere]
+
+- Pad PCX palette to 768 bytes when saving #6391
+  [radarhere]
+
+- Fixed bug with rounding pixels to palette colors #6377
+  [btrekkie, radarhere]
+
+- Use gnome-screenshot on Linux if available #6361
+  [radarhere, nulano]
+
+- Fixed loading L mode BMP RLE8 images #6384
+  [radarhere]
+
+- Fixed incorrect operator in ImageCms error #6370
+  [LostBenjamin, hugovk, radarhere]
+
 - Limit FPX tile size to avoid extending outside image #6368
   [radarhere]
 

Tests/test_decompression_bomb.py

@@ -61,6 +61,11 @@ class TestDecompressionBomb:
             with Image.open("Tests/images/decompression_bomb.gif"):
                 pass
 
+    def test_exception_gif_extents(self):
+        with Image.open("Tests/images/decompression_bomb_extents.gif") as im:
+            with pytest.raises(Image.DecompressionBombError):
+                im.seek(1)
+
     def test_exception_bmp(self):
         with pytest.raises(Image.DecompressionBombError):
             with Image.open("Tests/images/bmp/b/reallybig.bmp"):

Tests/test_file_bmp.py

@@ -134,6 +134,9 @@ def test_rle8():
     with Image.open("Tests/images/hopper_rle8.bmp") as im:
         assert_image_similar_tofile(im.convert("RGB"), "Tests/images/hopper.bmp", 12)
 
+    with Image.open("Tests/images/hopper_rle8_greyscale.bmp") as im:
+        assert_image_equal_tofile(im, "Tests/images/bw_gradient.png")
+
     # This test image has been manually hexedited
     # to have rows with too much data
     with Image.open("Tests/images/hopper_rle8_row_overflow.bmp") as im:

Tests/test_file_gif.py

@@ -158,6 +158,9 @@ def test_optimize_correctness():
             assert_image_equal(im.convert("RGB"), reloaded.convert("RGB"))
 
     # These do optimize the palette
+    check(256, 511, 256)
+    check(255, 511, 255)
+    check(129, 511, 129)
     check(128, 511, 128)
     check(64, 511, 64)
     check(4, 511, 4)
@@ -167,11 +170,6 @@ def test_optimize_correctness():
     check(64, 513, 256)
     check(4, 513, 256)
 
-    # Other limits that don't optimize the palette
-    check(129, 511, 256)
-    check(255, 511, 256)
-    check(256, 511, 256)
-
 
 def test_optimize_full_l():
     im = Image.frombytes("L", (16, 16), bytes(range(256)))
@@ -180,6 +178,19 @@ def test_optimize_full_l():
     assert im.mode == "L"
 
 
+def test_optimize_if_palette_can_be_reduced_by_half():
+    with Image.open("Tests/images/test.colors.gif") as im:
+        # Reduce dimensions because original is too big for _get_optimize()
+        im = im.resize((591, 443))
+    im_rgb = im.convert("RGB")
+
+    for (optimize, colors) in ((False, 256), (True, 8)):
+        out = BytesIO()
+        im_rgb.save(out, "GIF", optimize=optimize)
+        with Image.open(out) as reloaded:
+            assert len(reloaded.palette.palette) // 3 == colors
+
+
 def test_roundtrip(tmp_path):
     out = str(tmp_path / "temp.gif")
     im = hopper()
@@ -982,8 +993,8 @@ def test_append_images(tmp_path):
 def test_transparent_optimize(tmp_path):
     # From issue #2195, if the transparent color is incorrectly optimized out, GIF loses
     # transparency.
-    # Need a palette that isn't using the 0 color, and one that's > 128 items where the
-    # transparent color is actually the top palette entry to trigger the bug.
+    # Need a palette that isn't using the 0 color,
+    # where the transparent color is actually the top palette entry to trigger the bug.
 
     data = bytes(range(1, 254))
     palette = ImagePalette.ImagePalette("RGB", list(range(256)) * 3)
@@ -993,10 +1004,10 @@ def test_transparent_optimize(tmp_path):
     im.putpalette(palette)
 
     out = str(tmp_path / "temp.gif")
-    im.save(out, transparency=253)
-    with Image.open(out) as reloaded:
+    im.save(out, transparency=im.getpixel((252, 0)))
 
-        assert reloaded.info["transparency"] == 253
+    with Image.open(out) as reloaded:
+        assert reloaded.info["transparency"] == reloaded.getpixel((252, 0))
 
 
 def test_rgb_transparency(tmp_path):

Tests/test_file_pcx.py

@@ -20,6 +20,11 @@ def test_sanity(tmp_path):
     for mode in ("1", "L", "P", "RGB"):
         _roundtrip(tmp_path, hopper(mode))
 
+    # Test a palette with less than 256 colors
+    im = Image.new("P", (1, 1))
+    im.putpalette((255, 0, 0))
+    _roundtrip(tmp_path, im)
+
     # Test an unsupported mode
     f = str(tmp_path / "temp.pcx")
     im = hopper("RGBA")

Tests/test_font_pcf.py

@@ -49,6 +49,14 @@ def test_sanity(request, tmp_path):
     save_font(request, tmp_path)
 
 
+def test_less_than_256_characters():
+    with open("Tests/fonts/10x20-ISO8859-1-fewer-characters.pcf", "rb") as test_file:
+        font = PcfFontFile.PcfFontFile(test_file)
+    assert isinstance(font, FontFile.FontFile)
+    # check the number of characters in the font
+    assert len([_f for _f in font.glyph if _f]) == 127
+
+
 def test_invalid_file():
     with open("Tests/images/flower.jpg", "rb") as fp:
         with pytest.raises(SyntaxError):

Tests/test_image_array.py

@@ -1,4 +1,5 @@
 import pytest
+from packaging.version import parse as parse_version
 
 from PIL import Image
 
@@ -34,9 +35,10 @@ def test_toarray():
     test_with_dtype(numpy.float64)
     test_with_dtype(numpy.uint8)
 
-    with Image.open("Tests/images/truncated_jpeg.jpg") as im_truncated:
-        with pytest.raises(OSError):
-            numpy.array(im_truncated)
+    if parse_version(numpy.__version__) >= parse_version("1.23"):
+        with Image.open("Tests/images/truncated_jpeg.jpg") as im_truncated:
+            with pytest.raises(OSError):
+                numpy.array(im_truncated)
 
 
 def test_fromarray():

Tests/test_image_entropy.py

@@ -9,7 +9,7 @@ def test_entropy():
     assert round(abs(entropy("L") - 7.063008716585465), 7) == 0
     assert round(abs(entropy("I") - 7.063008716585465), 7) == 0
     assert round(abs(entropy("F") - 7.063008716585465), 7) == 0
-    assert round(abs(entropy("P") - 5.0530452472519745), 7) == 0
+    assert round(abs(entropy("P") - 5.082506854662517), 7) == 0
     assert round(abs(entropy("RGB") - 8.821286587714319), 7) == 0
     assert round(abs(entropy("RGBA") - 7.42724306524488), 7) == 0
     assert round(abs(entropy("CMYK") - 7.4272430652448795), 7) == 0

Tests/test_image_getcolors.py

@@ -16,7 +16,7 @@ def test_getcolors():
     assert getcolors("L") == 255
     assert getcolors("I") == 255
     assert getcolors("F") == 255
-    assert getcolors("P") == 90  # fixed palette
+    assert getcolors("P") == 96  # fixed palette
     assert getcolors("RGB") is None
     assert getcolors("RGBA") is None
     assert getcolors("CMYK") is None

Tests/test_image_histogram.py

@@ -10,7 +10,7 @@ def test_histogram():
     assert histogram("L") == (256, 0, 662)
     assert histogram("I") == (256, 0, 662)
     assert histogram("F") == (256, 0, 662)
-    assert histogram("P") == (256, 0, 1871)
+    assert histogram("P") == (256, 0, 1551)
     assert histogram("RGB") == (768, 4, 675)
     assert histogram("RGBA") == (1024, 0, 16384)
     assert histogram("CMYK") == (1024, 0, 16384)

Tests/test_image_quantize.py

@@ -65,6 +65,22 @@ def test_quantize_no_dither():
     assert converted.palette.palette == palette.palette.palette
 
 
+def test_quantize_no_dither2():
+    im = Image.new("RGB", (9, 1))
+    im.putdata(list((p,) * 3 for p in range(0, 36, 4)))
+
+    palette = Image.new("P", (1, 1))
+    data = (0, 0, 0, 32, 32, 32)
+    palette.putpalette(data)
+    quantized = im.quantize(dither=Image.Dither.NONE, palette=palette)
+
+    assert tuple(quantized.palette.palette) == data
+
+    px = quantized.load()
+    for x in range(9):
+        assert px[x, 0] == (0 if x < 5 else 1)
+
+
 def test_quantize_dither_diff():
     image = hopper()
     with Image.open("Tests/images/caption_6_33_22.png") as palette:

docs/index.rst

@@ -94,4 +94,3 @@ Indices and tables
 
 * :ref:`genindex`
 * :ref:`modindex`
-* :ref:`search`

docs/reference/ImageGrab.rst

@@ -15,7 +15,10 @@ or the clipboard to a PIL image memory.
     returned as an "RGBA" on macOS, or an "RGB" image otherwise.
     If the bounding box is omitted, the entire screen is copied.
 
-    .. versionadded:: 1.1.3 (Windows), 3.0.0 (macOS), 7.1.0 (Linux (X11))
+    On Linux, if ``xdisplay`` is ``None`` then ``gnome-screenshot`` will be used if it
+    is installed. To capture the default X11 display instead, pass ``xdisplay=""``.
+
+    .. versionadded:: 1.1.3 (Windows), 3.0.0 (macOS), 7.1.0 (Linux)
 
     :param bbox: What region to copy. Default is the entire screen.
                  Note that on Windows OS, the top-left point may be negative if ``all_screens=True`` is used.

docs/releasenotes/9.2.0.rst

@@ -1,12 +1,6 @@
 9.2.0
 -----
 
-Backwards Incompatible Changes
-==============================
-
-TODO
-^^^^
-
 Deprecations
 ============
 
@@ -46,14 +40,6 @@ Image.coerce_e
 This undocumented method has been deprecated and will be removed in Pillow 10
 (2023-07-01).
 
-API Changes
-===========
-
-TODO
-^^^^
-
-TODO
-
 API Additions
 =============
 
@@ -68,15 +54,14 @@ The image's palette mode will become "RGBA", and "transparency" will be removed
 Security
 ========
 
-TODO
-^^^^
-
-TODO
+An additional decompression bomb check has been added for the GIF format.
 
 Other Changes
 =============
 
-TODO
-^^^^
+Using gnome-screenshot on Linux
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-TODO
+In :py:meth:`~PIL.ImageGrab.grab` on Linux, if ``xdisplay`` is ``None`` then
+``gnome-screenshot`` will be used to capture the display if it is installed. To capture
+the default X11 display instead, pass ``xdisplay=""``.

src/PIL/BmpImagePlugin.py

@@ -321,7 +321,8 @@ class BmpRleDecoder(ImageFile.PyDecoder):
                     # align to 16-bit word boundary
                     if self.fd.tell() % 2 != 0:
                         self.fd.seek(1, os.SEEK_CUR)
-        self.set_as_raw(bytes(data), ("P", 0, self.args[-1]))
+        rawmode = "L" if self.mode == "L" else "P"
+        self.set_as_raw(bytes(data), (rawmode, 0, self.args[-1]))
         return -1, 0
 
 

src/PIL/GifImagePlugin.py

@@ -265,6 +265,7 @@ class GifImageFile(ImageFile.ImageFile):
                 x1, y1 = x0 + i16(s, 4), y0 + i16(s, 6)
                 if (x1 > self.size[0] or y1 > self.size[1]) and update_image:
                     self._size = max(x1, self.size[0]), max(y1, self.size[1])
+                    Image._decompression_bomb_check(self._size)
                 frame_dispose_extent = x0, y0, x1, y1
                 flags = s[8]
 
@@ -824,9 +825,18 @@ def _get_optimize(im, info):
                 if count:
                     used_palette_colors.append(i)
 
-            if optimise or (
-                len(used_palette_colors) <= 128
-                and max(used_palette_colors) > len(used_palette_colors)
+            if optimise or max(used_palette_colors) >= len(used_palette_colors):
+                return used_palette_colors
+
+            num_palette_colors = len(im.palette.palette) // Image.getmodebands(
+                im.palette.mode
+            )
+            current_palette_size = 1 << (num_palette_colors - 1).bit_length()
+            if (
+                # check that the palette would become smaller when saved
+                len(used_palette_colors) <= current_palette_size // 2
+                # check that the palette is not already the smallest possible size
+                and current_palette_size > 2
             ):
                 return used_palette_colors
 

src/PIL/Image.py

@@ -671,14 +671,9 @@ class Image:
             raise ValueError("Could not save to PNG for display") from e
         return b.getvalue()
 
-    class _ArrayData:
-        def __init__(self, new):
-            self.__array_interface__ = new
-
-    def __array__(self, dtype=None):
+    @property
+    def __array_interface__(self):
         # numpy array interface support
-        import numpy as np
-
         new = {}
         shape, typestr = _conv_type_shape(self)
         new["shape"] = shape
@@ -690,8 +685,7 @@ class Image:
             new["data"] = self.tobytes("raw", "L")
         else:
             new["data"] = self.tobytes()
-
-        return np.array(self._ArrayData(new), dtype)
+        return new
 
     def __getstate__(self):
         return [self.info, self.mode, self.size, self.getpalette(), self.tobytes()]

src/PIL/ImageGrab.py

@@ -15,15 +15,14 @@
 # See the README file for information on usage and redistribution.
 #
 
+import os
+import shutil
+import subprocess
 import sys
+import tempfile
 
 from . import Image
 
-if sys.platform == "darwin":
-    import os
-    import subprocess
-    import tempfile
-
 
 def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=None):
     if xdisplay is None:
@@ -62,6 +61,18 @@ def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=N
                 left, top, right, bottom = bbox
                 im = im.crop((left - x0, top - y0, right - x0, bottom - y0))
             return im
+        elif shutil.which("gnome-screenshot"):
+            fh, filepath = tempfile.mkstemp(".png")
+            os.close(fh)
+            subprocess.call(["gnome-screenshot", "-f", filepath])
+            im = Image.open(filepath)
+            im.load()
+            os.unlink(filepath)
+            if bbox:
+                im_cropped = im.crop(bbox)
+                im.close()
+                return im_cropped
+            return im
     # use xdisplay=None for default display on non-win32/macOS systems
     if not Image.core.HAVE_XCB:
         raise OSError("Pillow was built without XCB support")

src/PIL/PcfFontFile.py

@@ -84,8 +84,7 @@ class PcfFontFile(FontFile.FontFile):
         #
         # create glyph structure
 
-        for ch in range(256):
-            ix = encoding[ch]
+        for ch, ix in enumerate(encoding):
             if ix is not None:
                 x, y, l, r, w, a, d, f = metrics[ix]
                 glyph = (w, 0), (l, d - y, x + l, d), (0, 0, x, y), bitmaps[ix]
@@ -219,10 +218,6 @@ class PcfFontFile(FontFile.FontFile):
         return bitmaps
 
     def _load_encoding(self):
-
-        # map character code to bitmap index
-        encoding = [None] * 256
-
         fp, format, i16, i32 = self._getformat(PCF_BDF_ENCODINGS)
 
         first_col, last_col = i16(fp.read(2)), i16(fp.read(2))
@@ -232,6 +227,9 @@ class PcfFontFile(FontFile.FontFile):
 
         nencoding = (last_col - first_col + 1) * (last_row - first_row + 1)
 
+        # map character code to bitmap index
+        encoding = [None] * min(256, nencoding)
+
         encoding_offsets = [i16(fp.read(2)) for _ in range(nencoding)]
 
         for i in range(first_col, len(encoding)):

src/PIL/PcxImagePlugin.py

@@ -198,7 +198,9 @@ def _save(im, fp, filename):
     if im.mode == "P":
         # colour palette
         fp.write(o8(12))
-        fp.write(im.im.getpalette("RGB", "RGB"))  # 768 bytes
+        palette = im.im.getpalette("RGB", "RGB")
+        palette += b"\x00" * (768 - len(palette))
+        fp.write(palette)  # 768 bytes
     elif im.mode == "L":
         # greyscale palette
         fp.write(o8(12))

src/libImaging/Palette.c

@@ -200,15 +200,15 @@ ImagingPaletteCacheUpdate(ImagingPalette palette, int r, int g, int b) {
 
         /* Find min and max distances to any point in the box */
         r = palette->palette[i * 4 + 0];
-        tmin = (r < r0) ? RDIST(r, r1) : (r > r1) ? RDIST(r, r0) : 0;
+        tmin = (r < r0) ? RDIST(r, r0) : (r > r1) ? RDIST(r, r1) : 0;
         tmax = (r <= rc) ? RDIST(r, r1) : RDIST(r, r0);
 
         g = palette->palette[i * 4 + 1];
-        tmin += (g < g0) ? GDIST(g, g1) : (g > g1) ? GDIST(g, g0) : 0;
+        tmin += (g < g0) ? GDIST(g, g0) : (g > g1) ? GDIST(g, g1) : 0;
         tmax += (g <= gc) ? GDIST(g, g1) : GDIST(g, g0);
 
         b = palette->palette[i * 4 + 2];
-        tmin += (b < b0) ? BDIST(b, b1) : (b > b1) ? BDIST(b, b0) : 0;
+        tmin += (b < b0) ? BDIST(b, b0) : (b > b1) ? BDIST(b, b1) : 0;
         tmax += (b <= bc) ? BDIST(b, b1) : BDIST(b, b0);
 
         dmin[i] = tmin;

src/thirdparty/fribidi-shim/fribidi.c

@@ -33,6 +33,7 @@ static void fribidi_get_bracket_types_compat(
 
 int load_fribidi(void) {
     int error = 0;
+    const char **p_fribidi_version_info = 0;
 
     p_fribidi = 0;
 
@@ -87,20 +88,21 @@ int load_fribidi(void) {
     LOAD_FUNCTION(fribidi_get_par_embedding_levels);
 
 #ifndef _WIN32
-    fribidi_version_info = *(const char**)dlsym(p_fribidi, "fribidi_version_info");
-    if (error || (fribidi_version_info == 0)) {
+    p_fribidi_version_info = (const char**)dlsym(p_fribidi, "fribidi_version_info");
+    if (error || (p_fribidi_version_info == 0) || (*p_fribidi_version_info == 0)) {
         dlclose(p_fribidi);
         p_fribidi = 0;
         return 2;
     }
 #else
-    fribidi_version_info = *(const char**)GetProcAddress(p_fribidi, "fribidi_version_info");
-    if (error || (fribidi_version_info == 0)) {
+    p_fribidi_version_info = (const char**)GetProcAddress(p_fribidi, "fribidi_version_info");
+    if (error || (p_fribidi_version_info == 0) || (*p_fribidi_version_info == 0)) {
         FreeLibrary(p_fribidi);
         p_fribidi = 0;
         return 2;
     }
 #endif
+    fribidi_version_info = *p_fribidi_version_info;
 
     return 0;
 }

winbuild/build_prepare.py

@@ -281,9 +281,9 @@ deps = {
         "libs": [r"imagequant.lib"],
     },
     "harfbuzz": {
-        "url": "https://github.com/harfbuzz/harfbuzz/archive/4.3.0.zip",
-        "filename": "harfbuzz-4.3.0.zip",
-        "dir": "harfbuzz-4.3.0",
+        "url": "https://github.com/harfbuzz/harfbuzz/archive/4.4.1.zip",
+        "filename": "harfbuzz-4.4.1.zip",
+        "dir": "harfbuzz-4.4.1",
         "build": [
             cmd_cmake("-DHB_HAVE_FREETYPE:BOOL=TRUE"),
             cmd_nmake(target="clean"),