python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-01-12 18:26:17 +03:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #7779 from radarhere/gif

Browse Source 
Match mask size to pasted image size in GifImagePlugin
This commit is contained in:
Hugo van Kemenade 2024-03-01 12:14:05 +02:00 committed by GitHub
commit 1b25019a27
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 16 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Tests/test_file_gif.py
View File

@ -1113,6 +1113,21 @@ def test_append_images(tmp_path: Path) -> None:
assert reread.n_frames == 10
def test_append_different_size_image(tmp_path: Path) -> None:
out = str(tmp_path / "temp.gif")
im = Image.new("RGB", (100, 100))
bigger_im = Image.new("RGB", (200, 200), "#f00")
im.save(out, save_all=True, append_images=[bigger_im])
with Image.open(out) as reread:
assert reread.size == (100, 100)
reread.seek(1)
assert reread.size == (100, 100)
def test_transparent_optimize(tmp_path: Path) -> None:
# From issue #2195, if the transparent color is incorrectly optimized out, GIF loses
# transparency.

4
src/PIL/GifImagePlugin.py
View File

@ -649,9 +649,7 @@ def _write_multiple_frames(im, fp, palette):
if "transparency" in encoderinfo:
# When the delta is zero, fill the image with transparency
diff_frame = im_frame.copy()
fill = Image.new(
"P", diff_frame.size, encoderinfo["transparency"]
)
fill = Image.new("P", delta.size, encoderinfo["transparency"])
if delta.mode == "RGBA":
r, g, b, a = delta.split()
mask = ImageMath.eval(