On 2008-06-09 19:27:00 -0700, Adam R.Maxwell <[EMAIL PROTECTED]> said:
> On 2008-06-09 18:41:23 -0700, "Colin A. Smith" <[EMAIL PROTECTED]> said:
>
>> On Jun 9, 2008, at 17:36, Adam R. Maxwell wrote:
>>
>>> Clever :). Does it help at all to do something like [[OFMessageQueue
>>> mainQueue] queueSelectorOnce:... for rebuildTrackingRects? That might
>>> be more future-proof.
>>
>> I think that might help a bit but is still going to allow
>> rebuildTrackingRects calls while a user is actively scrolling. While
>> rebuildTrackingRects is running, nothing else on the main thread can
>> run and processing scroll events is significantly poorer. The worst
>> case, in which scroll events and rebuildTrackingRects, would still be
>> possible.
>
> Right; I forgot that OFMessageQueue is based on NSConditionLock instead
> of NSRunloop :/. However, if you used something like this
>
> - (void)scheduleRebuildTrackingRects
> {
> if (!_scheduledRebuildTrackingRects) {
> [self performSelector:@selector(rebuildTrackingRects)
> withObject:nil
> afterDelay:0 inModes:[NSArray arrayWithObject:NSDefaultRunLoopMode];
> _scheduledRebuildTrackingRects = YES;
> }
> }
>
> - (void)rebuildTrackingRects
> {
> _scheduledRebuildTrackingRects = NO;
> ...
> }
>
> then it wouldn't rebuild tracking rects while in
> NSEventTrackingRunLoopMode, which is what the scrollview should be
> using (hypothetically, at least; I use this trick in FileView to deal
> with icon scale changes).
<sigh> that won't quite work either, although it partly works with a
non-zero delay. Trackpad scrolling apparently uses scrollWheel: and
runs the runloop in the default mode. It's not tracking a control, so
that sort of makes sense...but I think it's inconsistent.
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