Added signal for layout direction

[platform/core/uifw/dali-core.git] / dali / devel-api / actors / actor-devel.h

diff --git a/dali/devel-api/actors/actor-devel.h b/dali/devel-api/actors/actor-devel.h
index 1c23a46..22085a9 100644 (file)
--- a/dali/devel-api/actors/actor-devel.h
+++ b/dali/devel-api/actors/actor-devel.h
@@ -155,7 +155,9 @@ enum Type
 
 } // namespace
 
-typedef Signal< void ( Actor, bool, VisibilityChange::Type ) > VisibilityChangedSignalType; ///< Signal type of VisibilityChangedSignal
+typedef Signal< void ( Actor, bool, VisibilityChange::Type ) > VisibilityChangedSignalType; ///< Signal type of VisibilityChangedSignalType
+
+typedef Signal< void ( Actor, LayoutDirection::Type ) > LayoutDirectionChangedSignalType; ///< Signal type of LayoutDirectionChangedSignal
 
 /**
  * @brief Raise actor above the next highest level of actor(s).
@@ -242,6 +244,20 @@ DALI_IMPORT_API void LowerBelow( Actor actor, Dali::Actor target );
  */
 DALI_IMPORT_API VisibilityChangedSignalType& VisibilityChangedSignal( Actor actor );
 
+/**
+ * @brief This signal is emitted when the layout direction property of this or a parent actor is changed.
+ *
+ * A callback of the following type may be connected:
+ * @code
+ *   void YourCallbackName( Actor actor, LayoutDirection::Type type );
+ * @endcode
+ * actor: The actor, or child of actor, whose laytou direction has changed
+ * type: Whether the actor's layout direction property has changed or a parent's.
+ * @return The signal to connect to
+ * @pre The Actor has been initialized.
+ */
+DALI_IMPORT_API LayoutDirectionChangedSignalType& LayoutDirectionChangedSignal( Actor actor );
+
 } // namespace DevelActor
 
 } // namespace Dali