From: Steve Yegge <stevey@google.com>
To: Drew Adams <drew.adams@oracle.com>
Cc: emacs-devel@gnu.org
Subject: Re: supporting mouse-entered, mouse-left
Date: Fri, 31 Jul 2009 08:48:30 -0700 [thread overview]
Message-ID: <9c768dc60907310848k73ea7284g91ebdc15cd35ae60@mail.gmail.com> (raw)
In-Reply-To: <0C3F67DE39BD414B9E7D825BA8D1F3F4@us.oracle.com>
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On Fri, Jul 31, 2009 at 8:38 AM, Drew Adams <drew.adams@oracle.com> wrote:
> I would like to highlight certain identifiers (such as all uses
> of a particular local variable in a function) simultaneously
> when the mouse enters any of them.
>
> I've scoured the documentation, and I don't see a way to
> accomplish this feat.
>
> Would it be reasonable to add mouse-entered and mouse-left
> properties analogous to point-entered and point-left?
>
> Alternately (or in addition), it might be nice to have text
> properties analogous to the mouseenter, mouseleave and
> possibly mouseover standard browser events, which would
> fire at the granularity of pixels rather than characters.
>
> Maybe I'm misunderstanding, but if you mean highlight the text whenever the
> mouse is over it, you can do that using text property `mouse-face'. (That
> has
> character granularity however.)
>
> To have the mouseover highlight appear for certain words etc., you would
> need to
> apply property `mouse-face' to those words.
>
> AFAIK, font-lock cannot be used for this, since it always uses the `face'
> text
> property. (But maybe I'm wrong about that.) It might be an interesting
> feature
> for font-lock to let you specify a different text property to use.
>
>
I'm sorry if I was unclear. Let me give an example. In this sentence:
"One flew east, one flew west, and one flew over the cuckoo's nest."
I would like to arrange things in advance so that whenever the mouse is
over any instance of the word "flew", ALL of the instances highlight.
`mouse-face' is not powerful enough to accomplish this.
-steve
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next prev parent reply other threads:[~2009-07-31 15:48 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-31 7:13 supporting mouse-entered, mouse-left Steve Yegge
2009-07-31 15:38 ` Drew Adams
2009-07-31 15:48 ` Steve Yegge [this message]
2009-07-31 16:48 ` Stephen J. Turnbull
2009-07-31 16:42 ` Drew Adams
2009-07-31 20:23 ` Drew Adams
2009-07-31 20:57 ` Steve Yegge
2009-08-01 0:56 ` Drew Adams
2009-08-01 5:52 ` Steve Yegge
2009-08-01 7:26 ` Drew Adams
2009-08-01 4:07 ` Stephen J. Turnbull
2009-08-01 6:04 ` Steve Yegge
2009-08-01 7:18 ` Stephen J. Turnbull
2009-07-31 19:16 ` Stefan Monnier
2009-07-31 22:05 ` Johan Bockgård
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