ClutterBehaviourScale Defines the reference point of the scaling. @CLUTTER_GRAVITY_NONE: @CLUTTER_GRAVITY_NORTH: @CLUTTER_GRAVITY_NORTH_EAST: @CLUTTER_GRAVITY_EAST: @CLUTTER_GRAVITY_SOUTH_EAST: @CLUTTER_GRAVITY_SOUTH: @CLUTTER_GRAVITY_SOUTH_WEST: @CLUTTER_GRAVITY_WEST: @CLUTTER_GRAVITY_NORTH_WEST: @CLUTTER_GRAVITY_CENTER: the actor should scale from the center The ClutterBehaviourScale structure contains only private data and should not be accessed directly. Class structure for #ClutterBehaviourScale. @parent_class: @alpha: @scale_begin: @scale_end: @gravity: @Returns: @alpha: @scale_begin: @scale_end: @gravity: @Returns: