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PNG image files with alpha channel
From: |
Miles Bader |
Subject: |
PNG image files with alpha channel |
Date: |
Thu, 08 May 2008 13:46:28 +0900 |
Is Emacs supposed to properly handle an alpha channel in a PNG file?
I vaguely recall that it used to do something halfway reasonable (even
if just merging in the default bg color), but now it seem to simply
ignore an alpha channel.
E.g., using default settings, with a white background, do:
(insert-image (create-image "image-with-alpha.png"))
[The create-image :background parameter seems to have no effect either.]
If you don't have an alpha-channel-bearing image, try this:
http://download.savannah.gnu.org/releases/emacs/icons/emacs5-256.png
The "background" around the sphere has an alpha channel that's mostly zero.
Thanks,
-Miles
--
Politeness, n. The most acceptable hypocrisy.
- PNG image files with alpha channel,
Miles Bader <=
- Re: PNG image files with alpha channel, Chong Yidong, 2008/05/08
- Re: PNG image files with alpha channel, Jason Rumney, 2008/05/08
- Re: PNG image files with alpha channel, Miles Bader, 2008/05/08
- Re: PNG image files with alpha channel, Jason Rumney, 2008/05/08
- Re: PNG image files with alpha channel, Miles Bader, 2008/05/08
- Re: PNG image files with alpha channel, Jason Rumney, 2008/05/08
- Re: PNG image files with alpha channel, Chong Yidong, 2008/05/08
- Re: PNG image files with alpha channel, Chong Yidong, 2008/05/08
- Re: PNG image files with alpha channel, Miles Bader, 2008/05/08
- Re: PNG image files with alpha channel, Chong Yidong, 2008/05/08