On Oct 30, 2008, at 7:34 PM, Randall Meadows wrote:
On Oct 30, 2008, at 7:23 PM, Randall Meadows wrote:
When I hit, for example, the Page Up area of the scroll bar, it
animates to it's new position; my reflection updates only a very
small portion of this change. It doesn't at all when I hit the
Page Up key, though. Is the animation process taking long enough
that the very next line of code is executed before it's done, and
therefore I don't capture any (or most) of the scroll? If so, is
there some deterministic way I can tell when the scroll animation
has completed, so I can update my view?
Just for grins, I changed my call to update the reflection to use
performSelector:withObject:afterDelay:
instead, and while that does help the paging issue, it completely
breaks dragging the knob; doing that now, it doesn't update at all
until I release the mouse to end the drag.
It also did nothing when I press the Page Up/Dn or arrow keys,
either. So that's obviously not the solution.
I'll point out that the "Use smooth scrolling" setting in the
Appearance prefpane makes a difference. With smooth scrolling off,
any change to the scroll bar is handled correctly; with it on, I get
the behavior I describe above.
I'd love to figure out to work around this. Anyone?
randy
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