Project entry vs. project rendered

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Project entry vs. project rendered

Jim Rosenberg
I have some projects containing a PasteUpMorph that is bigger than the
screen. (Navigation is via a custom class of my own, where dragging a
portal border drags the underlying PasteUpMorph.) When a project containing
one of these is first entered, it takes a long time to render. This is OK
-- I can live with this -- but I want to show Cursor wait while it's
happening. I thought I had this problem nailed -- in a method for the
parent project, the button that triggers entry to the "slow" project has
Cursor wait show before entering the project, and then Cursor normal show
in a block executed with WorldState addDeferredUIMessage:. On my desktop
system, which is a 1.6G Atom 330 running Linux, this seemed to be working
fine. But when I tried it on my G4 PowerBook, it came out all wrong. The
hourglass cursor appeared, as I wanted, but after only a second or so the
Cursor normal show method kicked in, even though the "parent" project was
still showing, and the long delay rendering the target project happened
*afterward*. How do I do a deferred UI message that will only be invoked
once the project is rendered?

(I tried preceding the Cursor normal show with

Project current world doOneCycle

in the deferred UI message block. This gives every appearance of working
perfectly under Linux, but made no difference on my PowerBook -- the
hourglass has gone away while the computation is done to render the
project. Is this a Mac VM issue?)

-Thanks, Jim

 Jim Rosenberg            
     Internet: [hidden email]