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Backport PR #30221 on branch v3.10.x (BUG: fix future incompatibility with Pillow 13) #30229

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Merged
merged 1 commit into from
Jun 30, 2025
Merged

Backport PR #30221 on branch v3.10.x (BUG: fix future incompatibility with Pillow 13) #30229

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2 changes: 1 addition & 1 deletion lib/matplotlib/backends/_backend_tk.py
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Original file line number Diff line number Diff line change
Expand Up @@ -775,7 +775,7 @@ def _recolor_icon(image, color):
image_data = np.asarray(image).copy()
black_mask = (image_data[..., :3] == 0).all(axis=-1)
image_data[black_mask, :3] = color
return Image.fromarray(image_data, mode="RGBA")
return Image.fromarray(image_data)

# Use the high-resolution (48x48 px) icon if it exists and is needed
with Image.open(path_large if (size > 24 and path_large.exists())
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2 changes: 1 addition & 1 deletion lib/matplotlib/backends/backend_pdf.py
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Expand Up @@ -1758,7 +1758,7 @@ def _writeImg(self, data, id, smask=None):
data[:, :, 2])
indices = np.argsort(palette24).astype(np.uint8)
rgb8 = indices[np.searchsorted(palette24, rgb24, sorter=indices)]
img = Image.fromarray(rgb8, mode='P')
img = Image.fromarray(rgb8).convert("P")
img.putpalette(palette)
png_data, bit_depth, palette = self._writePng(img)
if bit_depth is None or palette is None:
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