From: David De La Harpe Golden <david@harpegolden.net>
To: Luka Novsak <lnovsak@gmail.com>
Cc: 9181@debbugs.gnu.org
Subject: bug#9181: 24.0.50; Alpha transparency no longer works
Date: Wed, 03 Aug 2011 20:01:43 +0100 [thread overview]
Message-ID: <4E399B17.3050607@harpegolden.net> (raw)
In-Reply-To: <CAE6FkMJZYgRcwydQkzLfGBWuZy84=wqthCrsa4b+Avq3tzUr8g@mail.gmail.com>
On 03/08/11 18:29, Luka Novsak wrote:
> So unless emacs uses this workaround for now, it will not have
> functioning alpha transparency
[with non-compositing non-property-propagating wms and xcompmgr]
Well, not settable from within emacs. The "transset" (and more
full-featured derivative "transset-df") tools should still work though,
as IIRC they walk the window hierarchy up to one below the root and thus
set the property where xcompmgr expects it.
If a workaround were to be added back in to emacs, a similar walk would
at least be better than just assuming the immediate parent is the right
place to set it.
> when used in combination with a large majority of window managers.
OTOH, it will still work without the workaround with the various
big-name-desktop-env default compositing window managers that likely
account for the majority of actual desktops. Of course I'd expect non-
big-name-desktops to be more popular with emacs users than users in
general though.
> Perhaps there should be a push for this to be formally specified in
> the EWMH. The proposal for it seems to be many years old, and the
> practice widespread, so I don't see why this hasn't happened yet.
Well, it is ugly. e.g. A 2008 opinion expressed on the wm-spec-list was
that it's an "ugly beast" (
http://mail.gnome.org/archives/wm-spec-list/2008-January/msg00020.html )
... And clients now have another, arguably much better (though somewhat
more work for the client) way of specifying much more fine-grained
(per-pixel) transparency, using an ARGB visual (AFAICS what "conky" you
mentioned does).
What I'd _like_ to do is to *:
(i) alter emacs display-engine/face-resolution to do alphablending, and
(ii) emacs itself to use an ARGB visual overall
((i) and (ii) are actually only loosely related, you could have (i)
without (ii) and vice-versa)
Thereby allowing e.g.
opaque text with translucent background (needs (i) and (ii)),
translucent region highlighting that doesn't obscure colored-background
faces but rather blends over them (only needs (i)),
etc.
* bearing in mind I do have not much time right now to actually do it,
and even if I (or someone else) did such a thing, it's not something
that is likely to be able to go in-tree for months right now (feature
freeze, and bidi being a large change in the general area), so it's not
of immediate use to you.
next prev parent reply other threads:[~2011-08-03 19:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-25 20:41 bug#9181: 24.0.50; Alpha transparency no longer works Luka Novsak
2011-07-28 12:10 ` David De La Harpe Golden
[not found] ` <CAE6FkMJNzKxmfpx+tCE4PaACMJQL3ih4RiOrWXGGHMjcrJuaqA@mail.gmail.com>
2011-07-28 18:16 ` Luka Novsak
2011-07-28 23:07 ` David De La Harpe Golden
2011-07-29 9:34 ` Jan Djärv
[not found] ` <CAE6FkM+TJPFJ9ETwYM+1fg9f6LE54YeC=2t8yN8xLx_KqwBRCw@mail.gmail.com>
2011-07-29 17:46 ` Luka Novsak
2011-07-30 7:04 ` Jan Djärv
2011-08-02 20:23 ` Luka Novsak
2011-08-02 20:28 ` Lars Magne Ingebrigtsen
2011-08-02 20:49 ` Luka Novsak
2011-08-03 8:13 ` Jan Djärv
2011-08-03 8:22 ` David De La Harpe Golden
2011-08-03 11:50 ` Jan Djärv
2011-08-03 15:12 ` David De La Harpe Golden
2011-08-03 17:29 ` Luka Novsak
2011-08-03 19:01 ` David De La Harpe Golden [this message]
2011-08-04 11:14 ` Jan Djärv
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