Greetings,
I posted this question to the Mac OS X/Graphic/Core Animation
forum several weeks ago and no one's been able to answer it, so
I'm trying here.
I have a fairly complex hierarchy of NSViews (window -> split
view -> tab view, which hosts a variety of table, outline,
browser, and matrix views). Many of these subviews host CALayers
that perform a variety of animation. So far, so good.
Now, there's a sister NSView that overlaps the split view (yes,
it's "above" the split view, I create it programmatically with
-addSubview:positioned:relativeTo: using NSWindowAbove). It too
hosts an CALayer that's used to overlay semitransparent graphics
on top of the other views, illustrating relationships between
items in the other table views.
Here's the weird thing: sometimes, but not all the time, the
CALayers in the nested subviews draw ON TOP OF the CALayers in
the top-level overlay view. It's almost as if whatever the last
CALayer that gets drawn, draws on top of all of the other
CAlayers in the window. This seems really strange, because
within a single CALayer, sublayers appear to be strictly ordered
and always draw over the layers behind them.
Anyway, I'm looking for a solution that will get my overly
graphics view to always draw it's CALayers on top of the images
drawn by the nested views behind it.
--
James Bucanek
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