python-pillow/Pillow
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Clarified condition

Browse Source
This commit is contained in:
Andrew Murray 2026-04-03 22:16:51 +11:00
parent 82ac16d89d
commit 7f68decf2c
1 changed files with 11 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/PIL/PngImagePlugin.py
View File

@ -1443,9 +1443,9 @@ def _save(
palette_bytes += b"\0"
chunk(fp, b"PLTE", palette_bytes)
transparency = im.encoderinfo.get("transparency", im.info.get("transparency", None))
transparency = im.encoderinfo.get("transparency", im.info.get("transparency"))
if transparency or transparency == 0:
if transparency is not None:
if im.mode == "P":
# limit to actual palette size
alpha_bytes = colors
@ -1461,17 +1461,15 @@ def _save(
elif im.mode == "RGB":
red, green, blue = transparency
chunk(fp, b"tRNS", o16(red) + o16(green) + o16(blue))
else:
if "transparency" in im.encoderinfo:
# don't bother with transparency if it's an RGBA
# and it's in the info dict. It's probably just stale.
msg = "cannot use transparency for this mode"
raise OSError(msg)
else:
if im.mode == "P" and im.im.getpalettemode() == "RGBA":
alpha = im.im.getpalette("RGBA", "A")
alpha_bytes = colors
chunk(fp, b"tRNS", alpha[:alpha_bytes])
elif im.encoderinfo.get("transparency") is not None:
# don't bother with transparency if it's an RGBA
# and it's in the info dict. It's probably just stale.
msg = "cannot use transparency for this mode"
raise OSError(msg)
elif im.mode == "P" and im.im.getpalettemode() == "RGBA":
alpha = im.im.getpalette("RGBA", "A")
alpha_bytes = colors
chunk(fp, b"tRNS", alpha[:alpha_bytes])
if dpi := im.encoderinfo.get("dpi"):
chunk(