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Re: 23/NS: redraws according to mouse-face are slow
From: |
Chong Yidong |
Subject: |
Re: 23/NS: redraws according to mouse-face are slow |
Date: |
Mon, 04 May 2009 21:53:10 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.91 (gnu/linux) |
Thanks for debugging this.
> Now, in NS (or at least in Cocoa), there seem to be screen updates
> every time we draw a glyph string.
I see. It seems ns_draw_glyph_string is a lot more expensive that
x_draw_glyph_string. The show_mouse_face function assumes that the
*_draw_glyph_string operation is relatively cheap, which is why it's
called inside a loop.
My guess is that the problem lies in the calls to ns_focus and
ns_unfocus in ns_draw_glyph_string.
> If we wrap the code in show_mouse_face in NS[Dis|En]ableScreen, the
> problem goes away for me (and it's not just delayed). Same for the
> header-line/overlay issues I reported in #2530.
If possible, we should minimize the amount of platform-dependent code
inside xdisp.c. Could you experiment with putting these calls somewhere
in nsterm.m, say surrounding the calls to note_mouse_highlight?
Also, could it be ns_update_begin and ns_update_end that you want to
call, instead of NSDisableScreen and NSEnableScreen?
- Re: 23/NS: redraws according to mouse-face are slow, David Reitter, 2009/05/04
- Re: 23/NS: redraws according to mouse-face are slow, Leo, 2009/05/04
- Re: 23/NS: redraws according to mouse-face are slow,
Chong Yidong <=
- Re: 23/NS: redraws according to mouse-face are slow, David Reitter, 2009/05/04
- Re: 23/NS: redraws according to mouse-face are slow, Adrian Robert, 2009/05/05
- Re: 23/NS: redraws according to mouse-face are slow, Chong Yidong, 2009/05/05
- Re: 23/NS: redraws according to mouse-face are slow, David Reitter, 2009/05/05
- Re: 23/NS: redraws according to mouse-face are slow, Stefan Monnier, 2009/05/05
- Re: 23/NS: redraws according to mouse-face are slow, YAMAMOTO Mitsuharu, 2009/05/06
- Re: 23/NS: redraws according to mouse-face are slow, YAMAMOTO Mitsuharu, 2009/05/05
- Re: 23/NS: redraws according to mouse-face are slow, Adrian Robert, 2009/05/05
- Re: 23/NS: redraws according to mouse-face are slow, YAMAMOTO Mitsuharu, 2009/05/05