layout_changed

The layout_changed signal is emitted each time a layout manager has been changed.

Every Actor using the manager instance as a layout manager should connect a handler to the layout_changed signal and queue a relayout on themselves:

  static void layout_changed (ClutterLayoutManager *manager,
                              ClutterActor         *self)
  {
    clutter_actor_queue_relayout (self);
  }
  ...
    self->manager = g_object_ref_sink (manager);
    g_signal_connect (self->manager, "layout-changed",
                      G_CALLBACK (layout_changed),
                      self);

Sub-classes of LayoutManager that implement a layout that can be controlled or changed using parameters should emit the layout_changed signal whenever one of the parameters changes, by using layout_changed.