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Apply transparency to P images in ImageTk.PhotoImage #6559

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merged 1 commit into from Sep 24, 2022
Merged

Apply transparency to P images in ImageTk.PhotoImage #6559

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7 changes: 7 additions & 0 deletions Tests/test_imagetk.py
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Expand Up @@ -69,6 +69,13 @@ def test_photoimage():
assert_image_equal(reloaded, im.convert("RGBA"))


def test_photoimage_apply_transparency():
with Image.open("Tests/images/pil123p.png") as im:
im_tk = ImageTk.PhotoImage(im)
reloaded = ImageTk.getimage(im_tk)
assert_image_equal(reloaded, im.convert("RGBA"))


def test_photoimage_blank():
# test a image using mode/size:
for mode in TK_MODES:
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1 change: 1 addition & 0 deletions src/PIL/ImageTk.py
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Expand Up @@ -107,6 +107,7 @@ def __init__(self, image=None, size=None, **kw):
mode = image.mode
if mode == "P":
# palette mapped data
image.apply_transparency()
image.load()
try:
mode = image.palette.mode
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