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Redrawing CALayer subclass when super layer is scaled

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Redrawing CALayer subclass when super layer is scaled

Subject: Redrawing CALayer subclass when super layer is scaled
From: Rick Mann <email@hidden>
Date: Tue, 8 Jul 2008 22:53:49 -0700

I'm trying to use scaling of the superlayer to implement a zoom feature in my CAD app. The various elements in the canvas are drawn by a CALayer subclass I have, which overrides drawInContext:. After the zoom finishes animating, I want CA to call all the sublayer's drawInContext: methods as necessary to re-render the layer's contents. Is there any way to do this, short of keeping track of all the layers myself and calling setNeedsDisplay on them?

TIA,

--
Rick

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