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Improved ImageOps palette handling #6596

Merged
merged 7 commits into from Sep 26, 2022
Merged

Improved ImageOps palette handling #6596

merged 7 commits into from Sep 26, 2022

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PososikTeam
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@PososikTeam PososikTeam commented Sep 18, 2022 •
edited by radarhere

Resolves #6595

This pull request fix ImageOps.pad method. In previous version of this method it doesn't copy the palette, and whats why it might change the image to full black image.

Changes proposed in this pull request:

  • Add copy origin image palette to pad image.

@PososikTeam PososikTeam mentioned this pull request Sep 18, 2022
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@radarhere radarhere mentioned this pull request Sep 19, 2022
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@PososikTeam
Merge pull request #1 from radarhere/fix-padding
597dff7 
Improved palette handling in ImageOps
@radarhere radarhere changed the title Put palette into the new pad image Improved palette handling in ImageOps Sep 19, 2022
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PososikTeam#1 has been merged, containing suggestions from me

  • Removing the copy() operation, as it is not necessary, and not all images have palettes
  • Switched to using getpalette() in both pad() and expand(), allowing the test I added to pass
  • Stop expand() from only copying the palette for P images, allowing for the PA mode as well

@radarhere radarhere merged commit 3fd6a1e into python-pillow:main Sep 26, 2022
@radarhere radarhere changed the title Improved palette handling in ImageOps Improved ImageOps palette handling Sep 26, 2022
@sync-by-unito sync-by-unito bot mentioned this pull request Aug 28, 2023
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@radarhere radarhere radarhere approved these changes

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Method ImageOps.pad doesn't copy palette of original image
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