preloadContent()preloadContentpreloadContent

Marking Updates

• elementDidChange(_:)elementDidChange:elementDidChange_

  Notifies the layer that one of its elements changed.

• setNeedUpdateShapes()setNeedUpdateShapessetNeedUpdateShapes

  Marks representations derived from the layer geometry as needing an update.

• setNeedUpdateMetrics()setNeedUpdateMetricssetNeedUpdateMetrics

  Marks the cached side bearings as needing an update.

• setNeedUpdateMetricsFast()setNeedUpdateMetricsFastsetNeedUpdateMetricsFast

  Marks the cached side bearings as needing an update without locking.