From: Jason Rumney <jasonr@gnu.org>
To: Chong Yidong <cyd@stupidchicken.com>
Cc: emacs-devel@gnu.org
Subject: Re: Analysis of redisplay performance on Windows
Date: Mon, 28 Jul 2008 08:04:46 +0100 [thread overview]
Message-ID: <488D6F8E.8080502@gnu.org> (raw)
In-Reply-To: <8763qqiz6j.fsf@stupidchicken.com>
Chong Yidong wrote:
> Jason Rumney <jasonr@gnu.org> writes:
>
>> As I suggested in my earlier email, new functions in the
>> font backend interface to select a font for working with and releasing
>> it when done, would help, as we could then skip doing this in
>> functions like encode_char and text_extents.
>
> Could you suggest precisely what interface we need? I.e., could you
> suggest function names and rough docstrings?
/* Optional.
Begin using a font exclusively.
Backends may setup the FONT for use on frame F here so that it
does not need setting up in every call to the encode_char,
text_metrics or draw functions. The font remains current
until done_font is called. */
functions.
void (*use_font) P_ ((FRAME_PTR f, struct font *font));
/* Optional.
Finish using a font exclusively.
Backends may undo the actions of use_font here. */
void (*done_font) P_ ((FRAME_PTR f, struct font *font));
next prev parent reply other threads:[~2008-07-28 7:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-27 3:07 Analysis of redisplay performance on Windows Chong Yidong
2008-07-27 9:55 ` Jason Rumney
2008-07-27 20:56 ` Chong Yidong
2008-07-27 21:30 ` Jason Rumney
2008-07-27 21:40 ` Chong Yidong
2008-07-27 21:53 ` Jason Rumney
2008-07-28 1:18 ` Chong Yidong
2008-07-28 3:06 ` Adrian Robert
2008-07-28 5:03 ` Chong Yidong
2008-07-28 7:04 ` Jason Rumney [this message]
2008-07-28 2:11 ` Kevin Yu
2008-07-28 4:24 ` YAMAMOTO Mitsuharu
2008-07-28 9:48 ` YAMAMOTO Mitsuharu
2008-07-30 21:51 ` Jason Rumney
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