From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
To: rms@gnu.org
Cc: adrian.b.robert@gmail.com, emacs-devel@gnu.org,
monnier@iro.umontreal.ca, jasonr@gnu.org
Subject: Re: Changes 2009-07-15/16 in branch?
Date: Tue, 28 Jul 2009 09:53:41 +0900 [thread overview]
Message-ID: <wld47lr5ka.wl%mituharu@math.s.chiba-u.ac.jp> (raw)
In-Reply-To: <E1MVUC8-0003PC-Ug@fencepost.gnu.org>
>>>>> On Mon, 27 Jul 2009 13:41:04 -0400, Richard Stallman <rms@gnu.org> said:
> What I'm concerning about with respect to the GNU policy is the
> "alpha-component" (or maybe "alpha-channel" is more familiar)
> support, which was added only for Cocoa.
> Alpha-component/alpha-channel controls translucency of colors by
> specifying how opaque it is.
> Is this a feature users might actually want to use? I don't see
> what it is good for. Can someone explain what a user might want to
> do with this?
Emacs 23 already has a frame opacity control feature whose
design/implementation is different from what I mentioned above. I
guess this was added because they considered that some users would
want this kind of feature:
Quote etc/NEWS:
*** Emacs can now set the frame opacity.
The opacity of a frame can be controlled by setting the `alpha' frame
parameter. This only takes effect on a compositing window manager for
the X Window System, such as Compiz, Beryl and Compiz Fusion, on Mac
OS X, or on Windows 2000 and later versions of Windows.
The alpha parameter should be an integer between 0 (transparent) and
100 (opaque), or a float number between 0.0 and 1.0. It can also be a
cons cell (ACTIVE . INACTIVE), where ACTIVE is the opacity of an
active frame and INACTIVE is the opacity of non-active frames.
The variable `frame-alpha-lower-limit' defines a lower bound for the
opacity; the default is 20.
Some find its effect unsatisfactory because it makes both foreground
and background colors translucent. Adrian says the alpha-component
support in the NS port is superior and actually the latter can make
background translucent while keeping foreground opaque.
Actually the implementation of alpha-component support in the NS port
has some annoying glitch as I pointed out in
http://lists.gnu.org/archive/html/emacs-devel/2009-07/msg01340.html .
I think it's ridiculous to add such a feature to the release version
* without broader discussion about the specification for such a
general (i.e., non platform-specific) feature.
* with a premature implementation only for a non-free platform.
* with a risk of compatibility breakage in future.
* with a risk of infringing the GNU policy.
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
next prev parent reply other threads:[~2009-07-28 0:53 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-23 11:22 Changes 2009-07-15/16 in branch? Adrian Robert
2009-07-23 12:46 ` YAMAMOTO Mitsuharu
2009-07-23 15:30 ` Stefan Monnier
2009-07-24 0:23 ` YAMAMOTO Mitsuharu
2009-07-24 1:09 ` Stefan Monnier
2009-07-24 1:27 ` YAMAMOTO Mitsuharu
2009-07-24 1:37 ` Stefan Monnier
2009-07-24 2:20 ` YAMAMOTO Mitsuharu
2009-07-24 3:17 ` Stefan Monnier
2009-07-24 3:35 ` YAMAMOTO Mitsuharu
2009-07-24 3:44 ` Jason Rumney
2009-07-24 4:12 ` YAMAMOTO Mitsuharu
2009-07-25 2:13 ` YAMAMOTO Mitsuharu
2009-07-26 2:22 ` Richard Stallman
2009-07-26 2:35 ` YAMAMOTO Mitsuharu
2009-07-26 3:31 ` Miles Bader
2009-07-26 3:45 ` YAMAMOTO Mitsuharu
2009-07-27 2:44 ` Richard Stallman
2009-07-27 3:20 ` YAMAMOTO Mitsuharu
2009-07-27 17:41 ` Richard Stallman
2009-07-27 18:41 ` Clifford Wulfman
2009-07-28 4:37 ` Richard Stallman
2009-07-28 13:18 ` Clifford Wulfman
2009-07-28 17:14 ` Richard Stallman
2009-07-28 18:39 ` Alfred M. Szmidt
2009-07-28 20:31 ` Ian Eure
2009-08-01 3:21 ` Richard Stallman
2009-08-01 4:10 ` Ian Eure
2009-08-01 6:28 ` Stephen J. Turnbull
2009-08-02 4:44 ` Richard Stallman
2009-07-28 22:05 ` James Cloos
2009-07-29 20:13 ` Richard Stallman
2009-07-29 22:05 ` YAMAMOTO Mitsuharu
2009-07-30 7:53 ` YAMAMOTO Mitsuharu
2009-07-30 14:01 ` Chong Yidong
2009-07-31 1:56 ` YAMAMOTO Mitsuharu
2009-07-27 20:14 ` David De La Harpe Golden
2009-07-28 6:10 ` YAMAMOTO Mitsuharu
[not found] ` <EFBC3E4E-8739-4B16-8797-D9CA8BC290CD@gmail.com>
2009-07-28 20:33 ` David De La Harpe Golden
2009-07-28 0:53 ` YAMAMOTO Mitsuharu [this message]
2009-07-28 17:14 ` Richard Stallman
2009-07-24 19:25 ` Stefan Monnier
2009-07-29 0:22 ` YAMAMOTO Mitsuharu
2009-07-29 1:12 ` Chong Yidong
2009-07-29 1:18 ` YAMAMOTO Mitsuharu
2009-07-29 4:48 ` YAMAMOTO Mitsuharu
2009-07-29 1:29 ` YAMAMOTO Mitsuharu
2009-07-24 14:34 ` Adrian Robert
2009-07-25 1:15 ` YAMAMOTO Mitsuharu
2009-07-25 4:55 ` Richard Stallman
2009-07-25 16:59 ` Adrian Robert
2009-07-27 2:43 ` Richard Stallman
2009-07-27 3:22 ` Adrian Robert
[not found] ` <E1MW1sm-0000lL-4K@fencepost.gnu.org>
2009-07-29 14:08 ` Harald Hanche-Olsen
2009-07-29 17:18 ` Stefan Monnier
2009-07-30 7:35 ` David Kastrup
2009-07-30 13:31 ` Harald Hanche-Olsen
2009-07-28 18:25 ` Harald Hanche-Olsen
2009-07-29 2:34 ` Stephen J. Turnbull
2009-07-29 2:41 ` Lennart Borgman
2009-07-29 2:56 ` Harald Hanche-Olsen
2009-07-29 3:33 ` Stephen J. Turnbull
2009-07-29 20:14 ` Richard Stallman
2009-07-29 20:26 ` Chad Brown
2009-07-30 15:35 ` Richard Stallman
2009-07-30 16:37 ` Harald Hanche-Olsen
2009-07-29 20:31 ` Harald Hanche-Olsen
2009-07-30 15:35 ` Richard Stallman
2009-07-30 16:22 ` Harald Hanche-Olsen
2009-08-01 3:21 ` Richard Stallman
2009-08-01 7:45 ` CHENG Gao
2009-08-01 9:36 ` CHENG Gao
2009-08-02 4:43 ` Richard Stallman
2009-08-02 7:06 ` CHENG Gao
2009-08-03 16:17 ` Richard Stallman
2009-08-03 20:03 ` CHENG Gao
2009-07-29 14:12 ` Stefan Monnier
2009-07-27 0:35 ` YAMAMOTO Mitsuharu
2009-07-27 3:12 ` Adrian Robert
2009-07-29 3:23 ` Sean O'Rourke
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