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Do not down-convert if image is LA when showing with PNG format

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This commit is contained in:
Andrew Murray 2019-05-25 16:24:42 +10:00
parent a986fed5b4
commit 848a629784
1 changed files with 3 additions and 1 deletions
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4
src/PIL/ImageShow.py
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@ -71,7 +71,9 @@ class Viewer(object):
# FIXME: auto-contrast if max() > 255?
else:
base = Image.getmodebase(image.mode)
if base != image.mode and image.mode != "1" and image.mode != "RGBA":
if not (base == image.mode or
image.mode in ("1", "RGBA") or
(self.format == "PNG" and image.mode == "LA")):
image = image.convert(base)
return self.show_image(image, **options)