From: Adrian Robert <adrian.b.robert@gmail.com>
To: 2530@emacsbugs.donarmstrong.com
Cc: David Reitter <david.reitter@gmail.com>
Subject: bug#2530: 23/NS: redraws according to mouse-face are slow
Date: Wed, 4 Mar 2009 23:29:48 +0200 [thread overview]
Message-ID: <BAF3A3D5-641B-45BA-9DA1-DC767D2D9ECE@gmail.com> (raw)
> I find that the redisplay of overlays that happens when the mouse is
> moved into an overlay with a mouse-face property are much slower in
> Emacs 23 (NS, under Cocoa/OS X). It is pretty much a nasty animation
> - every layer is redrawn from left to right, it seems, and every step
> is visible. It seems that background is drawn first, and then the
> text over it.
Yes, this has been an issue for years from Emacs on Aqua on and it
completely baffles me. The NS code for handling mouse face is
identical to other platforms as far as I can tell, so I don't know
why the issue occurs only here. And the animation is far slower than
any code on the NS side could be taking. It must be a bug somewhere
on the core display side that is exposed because (guessing here) the
event loop under NS is done slightly differently.
next reply other threads:[~2009-03-04 21:29 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-04 21:29 Adrian Robert [this message]
2009-04-20 18:01 ` bug#2530: 23/NS: redraws according to mouse-face are slow David Reitter
[not found] ` <4383E9F6-9B66-4DA4-AA3C-D602EB059B97@gmail.com>
2009-04-24 3:27 ` Adrian Robert
[not found] ` <139B721E-A1B4-4256-B202-D4472C0331FB@gmail.com>
2009-05-04 22:55 ` David Reitter
[not found] ` <B31667CB-C4A4-48A4-A1E0-7D81AD6880A3@gmail.com>
2009-05-05 1:53 ` Chong Yidong
[not found] ` <87d4aowc1l.fsf@cyd.mit.edu>
2009-05-05 3:37 ` David Reitter
[not found] ` <2E6E5869-2F70-4AF5-A917-7EA863D6BD42@gmail.com>
2009-05-05 10:36 ` Adrian Robert
[not found] ` <1ACB40A8-4422-4B9A-A0F7-FE0B9C738299@gmail.com>
2009-05-05 14:13 ` Chong Yidong
2009-05-06 0:50 ` YAMAMOTO Mitsuharu
[not found] ` <87ab5rvds7.fsf@cyd.mit.edu>
2009-05-05 17:32 ` David Reitter
2009-05-06 1:47 ` Stefan Monnier
[not found] ` <jwvbpq7m2es.fsf-monnier+emacsbugreports@gnu.org>
2009-05-06 7:40 ` YAMAMOTO Mitsuharu
[not found] ` <48600A00-7FAE-4B80-8B3D-6615230918AF@gmail.com>
2016-01-14 5:08 ` Andrew Hyatt
[not found] ` <m2k2nc7np0.fsf@gmail.com>
2016-01-14 20:34 ` Alan J Third
2016-01-14 21:00 ` David Reitter
2016-01-14 21:39 ` Christian Kruse
[not found] ` <87r3hjrgc7.fsf@motte.fritz.box>
2016-01-15 7:38 ` Eli Zaretskii
[not found] ` <837fjbgumi.fsf@gnu.org>
2016-01-16 4:15 ` Andrew Hyatt
[not found] ` <wlprenukaa.wl%mituharu@math.s.chiba-u.ac.jp>
2009-05-06 1:55 ` Adrian Robert
[not found] ` <B2B56BBA-6285-48DE-8C95-3BBCA4805146@gmail.com>
2009-05-06 2:25 ` YAMAMOTO Mitsuharu
-- strict thread matches above, loose matches on Subject: below --
2009-03-01 22:34 David Reitter
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