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Re: Emacs as a desktop environment

From: David De La Harpe Golden
Subject: Re: Emacs as a desktop environment
Date: Sat, 28 May 2011 17:14:42 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110510 Icedove/3.1.10

On 28/05/11 11:44, Nix wrote:

It's using higher-level toolkits.

Sortof. gtk+ emacs is a actually a mix of toolkit and direct xlib calls, for a variety of reasons, some good, some just historical. A "pure gtk+" (or at least "pure gtk+ and probably cairo and stuff") emacs would be a possibility, but AFAIK a currently hypothetical one, and a lot of work for dubious return (especially since longstanding gtk+ rather than emacs bugs like the famous "closing display? hey, let's kill everything" and "hey, don't tell us how scrollbars work" presumably wouldn't go away).

AFAIUI the main thing really stalling wholesale movement to xcb and retirement of xlib in general is the absence of an xlib-free replacement for GLX. Right now, if an x11 app/toolkit/canvas ever wants to use accelerated opengl rendering (and "everyone" wants those fancy 3d effects these days...), it /must/ link to xlib (even if xlib itself is sitting on top of xcb) - see writeup here:


(note as the link explains xcb-glx is not sufficient, it's only part of the puzzle). Work on removing the xlib dependency for opengl apps seems to proceed in fits and starts, typically coincidental with GSoC projects...

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