From: Miles Bader <miles@gnu.org>
To: "Drew Adams" <drew.adams@oracle.com>
Cc: emacs-devel@gnu.org
Subject: Re: how to tell what's in the fringe? (lazy fringe)
Date: Fri, 19 Jun 2009 11:45:02 +0900 [thread overview]
Message-ID: <buoocslt00h.fsf@dhlpc061.dev.necel.com> (raw)
In-Reply-To: <23168F61416544D98791D6E70AFF9027@us.oracle.com> (Drew Adams's message of "Thu, 18 Jun 2009 11:30:25 -0700")
"Drew Adams" <drew.adams@oracle.com> writes:
> So my thought was to code up some lazy fringe: a fringe that would not show,
> except when there is some non-blank glyph in it. But I don't know how to test
> whether that condition is satisfied (e.g. in Lisp).
>
> Is that even logical? Perhaps if a fringe is not shown then its
> content is empty or undefined? I was thinking in terms of it having
> content that is simply not shown, but maybe that's incorrect.
Many of the fringe indicators are very dynamic, and only known in
relation to a particular redisplay. Morever, the presence of the fringe
can change the physical dimensions of the area available for redisplay.
If there's a particular less-dynamic indicator you're interested in,
then perhaps it reflects a condition that can be tested for more easily
in lisp code.
-Miles
--
Inhumanity, n. One of the signal and characteristic qualities of humanity.
next prev parent reply other threads:[~2009-06-19 2:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-18 18:30 how to tell what's in the fringe? (lazy fringe) Drew Adams
2009-06-19 2:45 ` Miles Bader [this message]
2009-06-19 16:24 ` Drew Adams
2009-06-19 20:52 ` Miles Bader
2009-06-19 21:39 ` Drew Adams
2009-06-19 22:24 ` Miles Bader
2009-06-19 22:42 ` Drew Adams
2009-06-19 23:29 ` Miles Bader
2009-06-19 23:33 ` Drew Adams
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