Tag Archives: core graphics

CALayer Internals: Contents

Posted on August 29, 2011 by Joel Kraut

It’s right there in the CALayer documentation: contents An object that provides the contents of the layer. Animatable. @property(retain) id contents Discussion A layer can set this property to a CGImageRef to display the image as its contents. The default value is nil. There’s … Continue reading →

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CALayers v. CGLayers, or, Which Layer, Player?

Posted on July 27, 2011 by Joel Kraut

What’s the Deal? An evergreen source of confusion for developers new to graphics on iOS is the existence of multiple Apple-provided graphics frameworks, and multiple “layer” objects within those frameworks.  We’re told to use Core Animation for compositing and animation, … Continue reading →

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