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Copy palette to new image in transform() #5647

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Merged
hugovk merged 1 commit into from
Aug 13, 2021
Merged

Copy palette to new image in transform() #5647

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5 changes: 5 additions & 0 deletions Tests/test_image_transform.py
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,11 @@ def test_info(self):
new_im = im.transform((100, 100), transform)
assert new_im.info["comment"] == comment

def test_palette(self):
with Image.open("Tests/images/hopper.gif") as im:
transformed = im.transform(im.size, Image.AFFINE, [1, 0, 0, 0, 1, 0])
assert im.palette.palette == transformed.palette.palette

def test_extent(self):
im = hopper("RGB")
(w, h) = im.size
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2 changes: 2 additions & 0 deletions src/PIL/Image.py
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Expand Up @@ -2479,6 +2479,8 @@ def getdata(self):
raise ValueError("missing method data")

im = new(self.mode, size, fillcolor)
if self.mode == "P" and self.palette:
im.palette = self.palette.copy()
im.info = self.info.copy()
if method == MESH:
# list of quads
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