RE: presentation type question

• To: jmorrill@BBN.COM, bss@jupiter.risc.rockwell.com
• Subject: RE: presentation type question
• From: Scott McKay <SWM@sapsucker.scrc.symbolics.com>
• Date: Fri, 21 Jun 1991 13:01-0400
• Cc: clim@BBN.COM
• In-Reply-To: <19910621143723.2.JMORRILL@adams.bbn.com>

    Date: Fri, 21 Jun 1991 10:37 EDT
    From: Jeff Morrill <jmorrill@BBN.COM>

      I have a situation in which I present a lot of objects to a CLIM pane as one
      presentation-type.  It's likely that there will be more that one of these frames
      enabled at one time, all of which use the same presentation-type.  Inside a
      command, I use ACCEPT to have the user select one of the items.  How can I cause
      only the objects in a specified frame to be mouse-sensitive?  (i.e. I don't want
      objects of the same presentation-type in any other frame to highlight when the
      mouse pointer is over it.)

    Second, you can set up a second presentation-type that acts as a "filter".
    Suppose you only wanted STRINGs from a certain window.  Then you may define
    a presentation translator to go from STRING to WINDOW-STRING as follows:

    (defvar *currently-interesting-window* (some-window))

    (define-presentation-translator string-to-window-string
       (string window-string
	    :gesture :left
	    :tester ((window) (eq *currently-interesting-window* window)))
       (object)
       object)

This is obviously DW code, but the general idea is the right one.  If
you are really trying to restrict sensitivity on a per-frame basis,
using a tester is a good way to do it.

    (accept 'frame-string)

    If the tester returns T, then the presentation is acceptable, else it is
    not acceptable.

0,,

• RE: presentation type question
• From: Jeff Morrill <jmorrill@BBN.COM>

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