Mouse tracking in CALayer
Mouse tracking in CALayer
- Subject: Mouse tracking in CALayer
- From: "Tom Pusateri" <email@hidden>
- Date: Fri, 4 Jan 2008 16:51:26 -0500
I have a single NSView in which I've created many CATextLayers to form
a menu that can slide over. I would like to expand a menu item if you
hover the mouse on the right edge of the CATextLayer. NSTrackingArea
seems to be a good fit except that it is view centric and not layer
centric. I thought about creating an NSTrackingArea for each layer
once the layers are positioned but after adding the constraints, I
don't know how to determine the layers position. There isn't a
delegate method or anyway to know when the layer position has been
calculated so I know where to create the NSTrackingArea. Of course,
then I have to deal with moving the tracking areas each time the layer
moves. Should I just used mouseMoved even though its less efficient?
Then how do I know which layer the mouse position is over?
Thanks,
Tom
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