Abstract classes and interfaces

ClutterActor — The basic element of the scene graph
ClutterContainer — An interface for container actors
ClutterChildMeta — Wrapper for actors inside a container
ClutterMedia — An interface for controlling playback of media data
ClutterLayoutManager — Layout managers base class
ClutterLayoutMeta — Wrapper for actors inside a layout manager
ClutterActorMeta — Base class of actor modifiers
ClutterAction — Abstract class for event-related logic
ClutterConstraint — Abstract class for constraints on position or size
ClutterEffect — Base class for actor effects
ClutterContent — Delegate for painting the content of an actor