Squall Reference Class References SLAnimation SLAnimationInformation SLCoreAnimation SLLayer SLLivePreview SLProperty SLReader SLShapeLayer SLShapePathLayer SLSquallAnimation SLTextLayer SLTransformLayer Squall Protocol References SLCoreAnimationBuildDelegate SLLayerProtocol SLLivePreviewDelegate Constant References SLAnimationEvent SLAnimationState SLPlaybackType SLSizing