Re: Overlapping CLIM presentations

• To: Curt Eggemeyer <curt@eraserhead.jpl.nasa.gov>
• Subject: Re: Overlapping CLIM presentations
• From: "David A. Moon" <moon@cambridge.apple.com>
• Date: Fri, 15 Nov 91 13:33:56 EST
• Cc: clim@BBN.COM

> Date: Fri, 15 Nov 91 06:23:19 PST
> From: curt@eraserhead.Jpl.Nasa.Gov (Curt Eggemeyer)
> To: slug@Warbucks.AI.SRI.COM
> Cc: clim@bbn.com

[slug removed]

> Has anybody come up with a hack to override CLIM's (as I perceive)
> mishandling of mouse clicking on valid overlapping presentations.
> The user should get a list or better yet a menu of those objects
> that those presentations represent to choose from but
> alas poor CLIM only outputs the last presentation that was placed
> on top of the others  (this should be considered a bug).

Is the appearance of your presentations opaque or translucent?  What
CLIM does is the right thing (at least according to its theory of the
world) if the presentations are opaque and they compute their sensitive
regions correctly, because the presentation CLIM selects is the only one
the user can see at the place where the mouse is pointing.  If your
presentations are translucent, so the user can see more than one at a
time, well, CLIM isn't sophisticated enough to handle that case.

An expert with the CLIM source code might be able to inform you of one
method you could override to change the mouse sensitivity lookup to
offer the user a menu in your situation.  I can't.

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