From: Steve Yegge <stevey@google.com>
To: Drew Adams <drew.adams@oracle.com>
Cc: "Stephen J. Turnbull" <stephen@xemacs.org>, emacs-devel@gnu.org
Subject: Re: supporting mouse-entered, mouse-left
Date: Fri, 31 Jul 2009 22:52:51 -0700 [thread overview]
Message-ID: <9c768dc60907312252k7bf800b8t453669b2ca2a6067@mail.gmail.com> (raw)
In-Reply-To: <2CD05755045E4C60877DA54CC13E7D9D@us.oracle.com>
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No, I do not need #1. This is not a question about highlighting.
I most sincerely regret ever using the word "highlight", because
it has sent you off chasing a massive red herring.
Let's just pretend I never said I wanted them to highlight.
I want them to squeak audibly, like mice. OK? I will figure out
how to make that happen. By myself.
My question is #2, and your solution does not work. Emacs does
not send any notifications when the mouse moves unless track-mouse
is on. This is what is called, in the vulgar parlance, a Catch-22.
Stefan already understands my question and has given me a
very satisfactory answer, which is, in short: go ahead and implement
it. That is what I was hoping to hear.
Before I start, I need to go poke fun at Stephen for acting like
a user on a Mac OS X forum and telling me in great detail that I
don't really want to do what I specifically said I want to do.
-steve
On Fri, Jul 31, 2009 at 5:56 PM, Drew Adams <drew.adams@oracle.com> wrote:
> The mode decorates the source with various text properties to
> facilitate navigation, outlining, folding, etc. My goal is to link
> together all the references to each local variable, so they light
> up when you mouse over any of them.
>
> Sounds like you need two things:
>
> 1. A way to highlight all text that has some property with a given value.
> 2. A way to know when the mouse is over any such text.
>
> For #2 I dunno. Maybe you can put something on `post-command-hook' (or you
> might
> need to do mouse-tracking). A function on `post-command-hook' could perhaps
> check whether the last event was a mouse event, and if so get the mouse
> position
> and then the value of the property at that position. That could be costly,
> but
> it might get you started.
>
> For #1, I just added a command to highlight.el that does that. It should
> give
> you something that works while you look for something more appropriate, if
> it
> isn't exactly what you want.
>
> The new command is `hlt-highlight-property-with-value'. You give it the
> property
> and value to highlight. You can give it a list of possible values - if the
> property has any of them, then the text is highlighted.
>
> You can also give it start and end limits, the highlighting face, the
> highlighting type (overlay or text property or both), and whether the
> highlighting should be with property `face' or `mouse-face'. All of these
> args
> are optional.
>
> To test the command:
>
> 1. Add a property to some text. For a quick test, you could add property
> `mouse-face' with value `highlight' (e.g. just as a test) using `C-u M-x
> hlt-highlight-regexp-region'.
>
> 2. Highlight all text that has a given property value. `M-x
> hlt-highlight-property-with-value'. You are prompted for the property and
> the
> value. E.g., enter `mouse-face' for the property and `highlight' for its
> value.
> All text (in the region or buffer) that has property `mouse-face' with
> value
> `highlight' is highlighted. (See the file for how to unhighlight etc.)
>
> http://www.emacswiki.org/emacs/highlight.el
>
> HTH.
>
>
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next prev parent reply other threads:[~2009-08-01 5:52 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
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 [this message]
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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