From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
Cc: emacs-devel@gnu.org
Subject: Re: images / alpha-blending
Date: Sun, 19 Feb 2006 16:22:59 +0900 [thread overview]
Message-ID: <wlpslj3j8s.wl%mituharu@math.s.chiba-u.ac.jp> (raw)
In-Reply-To: <67EC83DF-6455-41BF-8AE0-E00127822217@gmail.com>
>>>>> On Sat, 18 Feb 2006 10:00:33 +0000, David Reitter <david.reitter@gmail.com> said:
> I am trying to use a few new icons for the tool-bar and after a bit
> of fruitless research, I have the impression that alpha-blending is
> not supported. I can only use bitmasks, even with image types such
> as PNG that have an alpha channel. Is that correct?
It would work as expected only when :background is given explicitly.
Otherwise, transparent parts are merged with the frame background
color:
http://lists.gnu.org/archive/html/emacs-devel/2004-04/msg00623.html
> (I have only tried this with the Carbon port, but I understand that
> X11 currently doesn't support alpha-blending anyways.)
I have some experimental code of alpha channel support for the Carbon
port using Quartz 2D, but I have the impression that full alpha
channel support is a post-release issue from the above post. ("22.1"
didn't mean the next release there.)
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
next prev parent reply other threads:[~2006-02-19 7:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-18 10:00 images / alpha-blending David Reitter
2006-02-19 7:22 ` YAMAMOTO Mitsuharu [this message]
2006-02-19 22:47 ` Richard M. Stallman
2006-02-20 11:44 ` David Reitter
2006-02-21 15:44 ` David Reitter
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