1 #ifndef DALI_INTERNAL_ACTOR_H
2 #define DALI_INTERNAL_ACTOR_H
5 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
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25 #include <dali/public-api/actors/actor.h>
26 #include <dali/devel-api/actors/actor-devel.h>
27 #include <dali/public-api/common/vector-wrapper.h>
28 #include <dali/public-api/common/dali-common.h>
29 #include <dali/public-api/events/gesture.h>
30 #include <dali/public-api/math/viewport.h>
31 #include <dali/public-api/object/ref-object.h>
32 #include <dali/public-api/size-negotiation/relayout-container.h>
33 #include <dali/devel-api/events/gesture-devel.h>
34 #include <dali/internal/common/memory-pool-object-allocator.h>
35 #include <dali/internal/event/actors/actor-declarations.h>
36 #include <dali/internal/event/common/object-impl.h>
37 #include <dali/internal/event/common/stage-def.h>
38 #include <dali/internal/event/rendering/renderer-impl.h>
39 #include <dali/internal/update/nodes/node-declarations.h>
40 #include <dali/internal/update/manager/update-manager.h>
54 class ActorGestureData;
60 typedef std::vector< ActorPtr > ActorContainer;
61 typedef ActorContainer::iterator ActorIter;
62 typedef ActorContainer::const_iterator ActorConstIter;
64 typedef std::vector< RendererPtr > RendererContainer;
65 typedef RendererContainer::iterator RendererIter;
67 class ActorDepthTreeNode;
68 typedef Dali::Internal::MemoryPoolObjectAllocator< ActorDepthTreeNode > DepthNodeMemoryPool;
71 * Actor is the primary object which Dali applications interact with.
72 * UI controls can be built by combining multiple actors.
73 * Multi-Touch events are received through signals emitted by the actor tree.
75 * An Actor is a proxy for a Node in the scene graph.
76 * When an Actor is added to the Stage, it creates a node and connects it to the scene graph.
77 * The scene-graph can be updated in a separate thread, so the connection is done using an asynchronous message.
78 * When a tree of Actors is detached from the Stage, a message is sent to destroy the associated nodes.
80 class Actor : public Object
85 * @brief Struct to hold an actor and a dimension
87 struct ActorDimensionPair
92 * @param[in] newActor The actor to assign
93 * @param[in] newDimension The dimension to assign
95 ActorDimensionPair( Actor* newActor, Dimension::Type newDimension )
97 dimension( newDimension )
102 * @brief Equality operator
104 * @param[in] lhs The left hand side argument
105 * @param[in] rhs The right hand side argument
107 bool operator== ( const ActorDimensionPair& rhs )
109 return ( actor == rhs.actor ) && ( dimension == rhs.dimension );
112 Actor* actor; ///< The actor to hold
113 Dimension::Type dimension; ///< The dimension to hold
116 typedef std::vector< ActorDimensionPair > ActorDimensionStack;
121 * Create a new actor.
122 * @return A smart-pointer to the newly allocated Actor.
124 static ActorPtr New();
127 * Helper to create node for derived classes who don't have their own node type
128 * @return pointer to newly created unique node
130 static const SceneGraph::Node* CreateNode();
133 * Retrieve the name of the actor.
136 const std::string& GetName() const;
139 * Set the name of the actor.
140 * @param[in] name The new name.
142 void SetName( const std::string& name );
145 * @copydoc Dali::Actor::GetId
147 uint32_t GetId() const;
152 * Query whether an actor is the root actor, which is owned by the Stage.
153 * @return True if the actor is a root actor.
161 * Query whether the actor is connected to the Scene.
163 bool OnScene() const;
166 * Query whether the actor has any renderers.
167 * @return True if the actor is renderable.
169 bool IsRenderable() const
171 // inlined as this is called a lot in hit testing
172 return mRenderers && !mRenderers->empty();
176 * Query whether the actor is of class Dali::Layer
177 * @return True if the actor is a layer.
181 // inlined as this is called a lot in hit testing
186 * Gets the layer in which the actor is present
187 * @return The layer, which will be uninitialized if the actor is off-stage.
189 Dali::Layer GetLayer();
192 * Adds a child Actor to this Actor.
193 * @pre The child actor is not the same as the parent actor.
194 * @pre The child actor does not already have a parent.
195 * @param [in] child The child.
196 * @post The child will be referenced by its parent.
198 void Add( Actor& child );
201 * Removes a child Actor from this Actor.
202 * @param [in] child The child.
203 * @post The child will be unreferenced.
205 void Remove( Actor& child );
208 * @copydoc Dali::Actor::Unparent
213 * Retrieve the number of children held by the actor.
214 * @return The number of children
216 uint32_t GetChildCount() const;
219 * @copydoc Dali::Actor::GetChildAt
221 ActorPtr GetChildAt( uint32_t index ) const;
224 * Retrieve a reference to Actor's children.
225 * @note Not for public use.
226 * @return A reference to the container of children.
227 * @note The internal container is lazily initialized so ensure you check the child count before using the value returned by this method.
229 ActorContainer& GetChildrenInternal()
235 * @copydoc Dali::Actor::FindChildByName
237 ActorPtr FindChildByName( const std::string& actorName );
240 * @copydoc Dali::Actor::FindChildById
242 ActorPtr FindChildById( const uint32_t id );
245 * Retrieve the parent of an Actor.
246 * @return The parent actor, or NULL if the Actor does not have a parent.
248 Actor* GetParent() const
254 * Calculates screen position and size.
256 * @return pair of two values, position of top-left corner on screen and size respectively.
258 Rect<> CalculateScreenExtents( ) const;
261 * Sets the size of an actor.
262 * This does not interfere with the actors scale factor.
263 * @param [in] width The new width.
264 * @param [in] height The new height.
266 void SetSize( float width, float height );
269 * Sets the size of an actor.
270 * This does not interfere with the actors scale factor.
271 * @param [in] width The size of the actor along the x-axis.
272 * @param [in] height The size of the actor along the y-axis.
273 * @param [in] depth The size of the actor along the z-axis.
275 void SetSize( float width, float height, float depth );
278 * Sets the size of an actor.
279 * This does not interfere with the actors scale factor.
280 * @param [in] size The new size.
282 void SetSize( const Vector2& size );
285 * Sets the update size for an actor.
287 * @param[in] size The size to set.
289 void SetSizeInternal( const Vector2& size );
292 * Sets the size of an actor.
293 * This does not interfere with the actors scale factor.
294 * @param [in] size The new size.
296 void SetSize( const Vector3& size );
299 * Sets the update size for an actor.
301 * @param[in] size The size to set.
303 void SetSizeInternal( const Vector3& size );
306 * Set the width component of the Actor's size.
307 * @param [in] width The new width component.
309 void SetWidth( float width );
312 * Set the height component of the Actor's size.
313 * @param [in] height The new height component.
315 void SetHeight( float height );
318 * Set the depth component of the Actor's size.
319 * @param [in] depth The new depth component.
321 void SetDepth( float depth );
324 * Retrieve the Actor's size from event side.
325 * This size will be the size set or if animating then the target size.
326 * @return The Actor's size.
328 Vector3 GetTargetSize() const;
331 * Retrieve the Actor's size from update side.
332 * This size will be the size set or animating but will be a frame behind.
333 * @return The Actor's size.
335 const Vector3& GetCurrentSize() const;
338 * Return the natural size of the actor
340 * @return The actor's natural size
342 virtual Vector3 GetNaturalSize() const;
345 * Set the origin of an actor, within its parent's area.
346 * This is expressed in 2D unit coordinates, such that (0.0, 0.0, 0.5) is the top-left corner of the parent,
347 * and (1.0, 1.0, 0.5) is the bottom-right corner.
348 * The default parent-origin is top-left (0.0, 0.0, 0.5).
349 * An actor position is the distance between this origin, and the actors anchor-point.
350 * @param [in] origin The new parent-origin.
352 void SetParentOrigin( const Vector3& origin );
355 * Set the x component of the parent-origin
356 * @param [in] x The new x value.
358 void SetParentOriginX( float x );
361 * Set the y component of the parent-origin
362 * @param [in] y The new y value.
364 void SetParentOriginY( float y );
367 * Set the z component of the parent-origin
368 * @param [in] z The new z value.
370 void SetParentOriginZ( float z );
373 * Retrieve the parent-origin of an actor.
374 * @return The parent-origin.
376 const Vector3& GetCurrentParentOrigin() const;
379 * Set the anchor-point of an actor. This is expressed in 2D unit coordinates, such that
380 * (0.0, 0.0, 0.5) is the top-left corner of the actor, and (1.0, 1.0, 0.5) is the bottom-right corner.
381 * The default anchor point is top-left (0.0, 0.0, 0.5).
382 * An actor position is the distance between its parent-origin, and this anchor-point.
383 * An actor's rotation is centered around its anchor-point.
384 * @param [in] anchorPoint The new anchor-point.
386 void SetAnchorPoint( const Vector3& anchorPoint );
389 * Set the x component of the anchor-point.
390 * @param [in] x The new x value.
392 void SetAnchorPointX( float x );
395 * Set the y component of the anchor-point.
396 * @param [in] y The new y value.
398 void SetAnchorPointY( float y );
401 * Set the z component of the anchor-point.
402 * @param [in] z The new z value.
404 void SetAnchorPointZ( float z );
407 * Retrieve the anchor-point of an actor.
408 * @return The anchor-point.
410 const Vector3& GetCurrentAnchorPoint() const;
413 * Sets the position of the Actor.
414 * The coordinates are relative to the Actor's parent.
415 * The Actor's z position will be set to 0.0f.
416 * @param [in] x The new x position
417 * @param [in] y The new y position
419 void SetPosition( float x, float y );
422 * Sets the position of the Actor.
423 * The coordinates are relative to the Actor's parent.
424 * @param [in] x The new x position
425 * @param [in] y The new y position
426 * @param [in] z The new z position
428 void SetPosition( float x, float y, float z );
431 * Sets the position of the Actor.
432 * The coordinates are relative to the Actor's parent.
433 * @param [in] position The new position.
435 void SetPosition( const Vector3& position );
438 * Set the position of an actor along the X-axis.
439 * @param [in] x The new x position
441 void SetX( float x );
444 * Set the position of an actor along the Y-axis.
445 * @param [in] y The new y position.
447 void SetY( float y );
450 * Set the position of an actor along the Z-axis.
451 * @param [in] z The new z position
453 void SetZ( float z );
456 * Translate an actor relative to its existing position.
457 * @param[in] distance The actor will move by this distance.
459 void TranslateBy( const Vector3& distance );
462 * Retrieve the position of the Actor.
463 * The coordinates are relative to the Actor's parent.
464 * @return the Actor's position.
466 const Vector3& GetCurrentPosition() const;
469 * Retrieve the target position of the Actor.
470 * The coordinates are relative to the Actor's parent.
471 * @return the Actor's position.
473 const Vector3& GetTargetPosition() const;
476 * @copydoc Dali::Actor::GetCurrentWorldPosition()
478 const Vector3& GetCurrentWorldPosition() const;
481 * @copydoc Dali::Actor::SetInheritPosition()
483 void SetInheritPosition( bool inherit );
486 * @copydoc Dali::Actor::IsPositionInherited()
488 bool IsPositionInherited() const;
491 * Sets the orientation of the Actor.
492 * @param [in] angleRadians The new orientation angle in radians.
493 * @param [in] axis The new axis of orientation.
495 void SetOrientation( const Radian& angleRadians, const Vector3& axis );
498 * Sets the orientation of the Actor.
499 * @param [in] orientation The new orientation.
501 void SetOrientation( const Quaternion& orientation );
504 * Rotate an actor around its existing rotation axis.
505 * @param[in] angleRadians The angle to the rotation to combine with the existing rotation.
506 * @param[in] axis The axis of the rotation to combine with the existing rotation.
508 void RotateBy( const Radian& angleRadians, const Vector3& axis );
511 * Apply a relative rotation to an actor.
512 * @param[in] relativeRotation The rotation to combine with the actors existing rotation.
514 void RotateBy( const Quaternion& relativeRotation );
517 * Retreive the Actor's orientation.
518 * @return the orientation.
520 const Quaternion& GetCurrentOrientation() const;
523 * Set whether a child actor inherits it's parent's orientation. Default is to inherit.
524 * Switching this off means that using SetOrientation() sets the actor's world orientation.
525 * @param[in] inherit - true if the actor should inherit orientation, false otherwise.
527 void SetInheritOrientation( bool inherit );
530 * Returns whether the actor inherit's it's parent's orientation.
531 * @return true if the actor inherit's it's parent orientation, false if it uses world orientation.
533 bool IsOrientationInherited() const;
536 * Sets the factor of the parents size used for the child actor.
537 * Note: Only used if ResizePolicy is ResizePolicy::SIZE_RELATIVE_TO_PARENT or ResizePolicy::SIZE_FIXED_OFFSET_FROM_PARENT.
538 * @param[in] factor The vector to multiply the parents size by to get the childs size.
540 void SetSizeModeFactor( const Vector3& factor );
543 * Gets the factor of the parents size used for the child actor.
544 * Note: Only used if ResizePolicy is ResizePolicy::SIZE_RELATIVE_TO_PARENT or ResizePolicy::SIZE_FIXED_OFFSET_FROM_PARENT.
545 * @return The vector being used to multiply the parents size by to get the childs size.
547 const Vector3& GetSizeModeFactor() const;
550 * @copydoc Dali::Actor::GetCurrentWorldOrientation()
552 const Quaternion& GetCurrentWorldOrientation() const;
555 * Sets a scale factor applied to an actor.
556 * @param [in] scale The scale factor applied on all axes.
558 void SetScale( float scale );
561 * Sets a scale factor applied to an actor.
562 * @param [in] scaleX The scale factor applied along the x-axis.
563 * @param [in] scaleY The scale factor applied along the y-axis.
564 * @param [in] scaleZ The scale factor applied along the z-axis.
566 void SetScale( float scaleX, float scaleY, float scaleZ );
569 * Sets a scale factor applied to an actor.
570 * @param [in] scale A vector representing the scale factor for each axis.
572 void SetScale( const Vector3& scale );
575 * Set the x component of the scale factor.
576 * @param [in] x The new x value.
578 void SetScaleX( float x );
581 * Set the y component of the scale factor.
582 * @param [in] y The new y value.
584 void SetScaleY( float y );
587 * Set the z component of the scale factor.
588 * @param [in] z The new z value.
590 void SetScaleZ( float z );
593 * Apply a relative scale to an actor.
594 * @param[in] relativeScale The scale to combine with the actors existing scale.
596 void ScaleBy( const Vector3& relativeScale );
599 * Retrieve the scale factor applied to an actor.
600 * @return A vector representing the scale factor for each axis.
602 const Vector3& GetCurrentScale() const;
605 * @copydoc Dali::Actor::GetCurrentWorldScale()
607 const Vector3& GetCurrentWorldScale() const;
610 * @copydoc Dali::Actor::SetInheritScale()
612 void SetInheritScale( bool inherit );
615 * @copydoc Dali::Actor::IsScaleInherited()
617 bool IsScaleInherited() const;
620 * @copydoc Dali::Actor::GetCurrentWorldMatrix()
622 Matrix GetCurrentWorldMatrix() const;
627 * Sets the visibility flag of an actor.
628 * @param[in] visible The new visibility flag.
630 void SetVisible( bool visible );
633 * Retrieve the visibility flag of an actor.
634 * @return The visibility flag.
636 bool IsVisible() const;
639 * Sets the opacity of an actor.
640 * @param [in] opacity The new opacity.
642 void SetOpacity( float opacity );
645 * Retrieve the actor's opacity.
646 * @return The actor's opacity.
648 float GetCurrentOpacity() const;
651 * Retrieve the actor's clipping mode.
652 * @return The actor's clipping mode (cached)
654 ClippingMode::Type GetClippingMode() const;
657 * Sets whether an actor should emit touch or hover signals; see SignalTouch() and SignalHover().
658 * An actor is sensitive by default, which means that as soon as an application connects to the SignalTouch(),
659 * the touch event signal will be emitted, and as soon as an application connects to the SignalHover(), the
660 * hover event signal will be emitted.
662 * If the application wishes to temporarily disable the touch or hover event signal emission, then they can do so by calling:
664 * actor.SetSensitive(false);
667 * Then, to re-enable the touch or hover event signal emission, the application should call:
669 * actor.SetSensitive(true);
672 * @see SignalTouch() and SignalHover().
673 * @note If an actor's sensitivity is set to false, then it's children will not emit a touch or hover event signal either.
674 * @param[in] sensitive true to enable emission of the touch or hover event signals, false otherwise.
676 void SetSensitive( bool sensitive )
678 mSensitive = sensitive;
682 * Query whether an actor emits touch or hover event signals.
683 * @see SetSensitive(bool)
684 * @return true, if emission of touch or hover event signals is enabled, false otherwise.
686 bool IsSensitive() const
692 * @copydoc Dali::Actor::SetDrawMode
694 void SetDrawMode( DrawMode::Type drawMode );
697 * @copydoc Dali::Actor::GetDrawMode
699 DrawMode::Type GetDrawMode() const;
702 * @copydoc Dali::Actor::IsOverlay
704 bool IsOverlay() const;
707 * Sets the actor's color. The final color of actor depends on its color mode.
708 * This final color is applied to the drawable elements of an actor.
709 * @param [in] color The new color.
711 void SetColor( const Vector4& color );
714 * Set the red component of the color.
715 * @param [in] red The new red component.
717 void SetColorRed( float red );
720 * Set the green component of the color.
721 * @param [in] green The new green component.
723 void SetColorGreen( float green );
726 * Set the blue component of the scale factor.
727 * @param [in] blue The new blue value.
729 void SetColorBlue( float blue );
732 * Retrieve the actor's color.
735 const Vector4& GetCurrentColor() const;
738 * Sets the actor's color mode.
739 * Color mode specifies whether Actor uses its own color or inherits its parent color
740 * @param [in] colorMode to use.
742 void SetColorMode( ColorMode colorMode );
745 * Returns the actor's color mode.
746 * @return currently used colorMode.
748 ColorMode GetColorMode() const;
751 * @copydoc Dali::Actor::GetCurrentWorldColor()
753 const Vector4& GetCurrentWorldColor() const;
756 * @copydoc Dali::Actor::GetHierarchyDepth()
758 inline int32_t GetHierarchyDepth() const
769 * Get the actor's sorting depth
771 * @return The depth used for hit-testing and renderer sorting
773 uint32_t GetSortingDepth();
777 // Size negotiation virtual functions
780 * @brief Called after the size negotiation has been finished for this control.
782 * The control is expected to assign this given size to itself/its children.
784 * Should be overridden by derived classes if they need to layout
785 * actors differently after certain operations like add or remove
786 * actors, resize or after changing specific properties.
788 * Note! As this function is called from inside the size negotiation algorithm, you cannot
789 * call RequestRelayout (the call would just be ignored)
791 * @param[in] size The allocated size.
792 * @param[in,out] container The control should add actors to this container that it is not able
793 * to allocate a size for.
795 virtual void OnRelayout( const Vector2& size, RelayoutContainer& container )
800 * @brief Notification for deriving classes when the resize policy is set
802 * @param[in] policy The policy being set
803 * @param[in] dimension The dimension the policy is being set for
805 virtual void OnSetResizePolicy( ResizePolicy::Type policy, Dimension::Type dimension ) {}
808 * @brief Virtual method to notify deriving classes that relayout dependencies have been
809 * met and the size for this object is about to be calculated for the given dimension
811 * @param dimension The dimension that is about to be calculated
813 virtual void OnCalculateRelayoutSize( Dimension::Type dimension );
816 * @brief Virtual method to notify deriving classes that the size for a dimension
817 * has just been negotiated
819 * @param[in] size The new size for the given dimension
820 * @param[in] dimension The dimension that was just negotiated
822 virtual void OnLayoutNegotiated( float size, Dimension::Type dimension );
825 * @brief Determine if this actor is dependent on it's children for relayout
827 * @param dimension The dimension(s) to check for
828 * @return Return if the actor is dependent on it's children
830 virtual bool RelayoutDependentOnChildren( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
833 * @brief Determine if this actor is dependent on it's children for relayout.
835 * Called from deriving classes
837 * @param dimension The dimension(s) to check for
838 * @return Return if the actor is dependent on it's children
840 virtual bool RelayoutDependentOnChildrenBase( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
843 * @brief Calculate the size for a child
845 * @param[in] child The child actor to calculate the size for
846 * @param[in] dimension The dimension to calculate the size for. E.g. width or height.
847 * @return Return the calculated size for the given dimension
849 virtual float CalculateChildSize( const Dali::Actor& child, Dimension::Type dimension );
852 * @brief This method is called during size negotiation when a height is required for a given width.
854 * Derived classes should override this if they wish to customize the height returned.
856 * @param width to use.
857 * @return the height based on the width.
859 virtual float GetHeightForWidth( float width );
862 * @brief This method is called during size negotiation when a width is required for a given height.
864 * Derived classes should override this if they wish to customize the width returned.
866 * @param height to use.
867 * @return the width based on the width.
869 virtual float GetWidthForHeight( float height );
876 * @brief Called by the RelayoutController to negotiate the size of an actor.
878 * The size allocated by the the algorithm is passed in which the
879 * actor must adhere to. A container is passed in as well which
880 * the actor should populate with actors it has not / or does not
881 * need to handle in its size negotiation.
883 * @param[in] size The allocated size.
884 * @param[in,out] container The container that holds actors that are fed back into the
885 * RelayoutController algorithm.
887 void NegotiateSize( const Vector2& size, RelayoutContainer& container );
890 * @brief Set whether size negotiation should use the assigned size of the actor
891 * during relayout for the given dimension(s)
893 * @param[in] use Whether the assigned size of the actor should be used
894 * @param[in] dimension The dimension(s) to set. Can be a bitfield of multiple dimensions
896 void SetUseAssignedSize( bool use, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
899 * @brief Returns whether size negotiation should use the assigned size of the actor
900 * during relayout for a single dimension
902 * @param[in] dimension The dimension to get
903 * @return Return whether the assigned size of the actor should be used. If more than one dimension is requested, just return the first one found
905 bool GetUseAssignedSize( Dimension::Type dimension ) const;
908 * @copydoc Dali::Actor::SetResizePolicy()
910 void SetResizePolicy( ResizePolicy::Type policy, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
913 * @copydoc Dali::Actor::GetResizePolicy()
915 ResizePolicy::Type GetResizePolicy( Dimension::Type dimension ) const;
918 * @copydoc Dali::Actor::SetSizeScalePolicy()
920 void SetSizeScalePolicy( SizeScalePolicy::Type policy );
923 * @copydoc Dali::Actor::GetSizeScalePolicy()
925 SizeScalePolicy::Type GetSizeScalePolicy() const;
928 * @copydoc Dali::Actor::SetDimensionDependency()
930 void SetDimensionDependency( Dimension::Type dimension, Dimension::Type dependency );
933 * @copydoc Dali::Actor::GetDimensionDependency()
935 Dimension::Type GetDimensionDependency( Dimension::Type dimension ) const;
938 * @brief Set the size negotiation relayout enabled on this actor
940 * @param[in] relayoutEnabled Boolean to enable or disable relayout
942 void SetRelayoutEnabled( bool relayoutEnabled );
945 * @brief Return if relayout is enabled
947 * @return Return if relayout is enabled or not for this actor
949 bool IsRelayoutEnabled() const;
952 * @brief Mark an actor as having it's layout dirty
954 * @param dirty Whether to mark actor as dirty or not
955 * @param dimension The dimension(s) to mark as dirty
957 void SetLayoutDirty( bool dirty, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
960 * @brief Return if any of an actor's dimensions are marked as dirty
962 * @param dimension The dimension(s) to check
963 * @return Return if any of the requested dimensions are dirty
965 bool IsLayoutDirty( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
968 * @brief Returns if relayout is enabled and the actor is not dirty
970 * @return Return if it is possible to relayout the actor
972 bool RelayoutPossible( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
975 * @brief Returns if relayout is enabled and the actor is dirty
977 * @return Return if it is required to relayout the actor
979 bool RelayoutRequired( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
982 * @brief Request a relayout, which means performing a size negotiation on this actor, its parent and children (and potentially whole scene)
984 * This method is automatically called from OnSceneConnection(), OnChildAdd(),
985 * OnChildRemove(), SetSizePolicy(), SetMinimumSize() and SetMaximumSize().
987 * This method can also be called from a derived class every time it needs a different size.
988 * At the end of event processing, the relayout process starts and
989 * all controls which requested Relayout will have their sizes (re)negotiated.
991 * @note RelayoutRequest() can be called multiple times; the size negotiation is still
992 * only performed once, i.e. there is no need to keep track of this in the calling side.
994 void RelayoutRequest( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
997 * @brief Determine if this actor is dependent on it's parent for relayout
999 * @param dimension The dimension(s) to check for
1000 * @return Return if the actor is dependent on it's parent
1002 bool RelayoutDependentOnParent( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1005 * @brief Determine if this actor has another dimension depedent on the specified one
1007 * @param dimension The dimension to check for
1008 * @param dependentDimension The dimension to check for dependency with
1009 * @return Return if the actor is dependent on this dimension
1011 bool RelayoutDependentOnDimension( Dimension::Type dimension, Dimension::Type dependentDimension );
1014 * Negotiate sizes for a control in all dimensions
1016 * @param[in] allocatedSize The size constraint that the control must respect
1018 void NegotiateDimensions( const Vector2& allocatedSize );
1021 * Negotiate size for a specific dimension
1023 * The algorithm adopts a recursive dependency checking approach. Meaning, that wherever dependencies
1024 * are found, e.g. an actor dependent on its parent, the dependency will be calculated first with NegotiatedDimension and
1025 * LayoutDimensionNegotiated flags being filled in on the actor.
1027 * @post All actors that exist in the dependency chain connected to the given actor will have had their NegotiatedDimensions
1028 * calculated and set as well as the LayoutDimensionNegotiated flags.
1030 * @param[in] dimension The dimension to negotiate on
1031 * @param[in] allocatedSize The size constraint that the actor must respect
1033 void NegotiateDimension( Dimension::Type dimension, const Vector2& allocatedSize, ActorDimensionStack& recursionStack );
1036 * @brief Calculate the size of a dimension
1038 * @param[in] dimension The dimension to calculate the size for
1039 * @param[in] maximumSize The upper bounds on the size
1040 * @return Return the calculated size for the dimension
1042 float CalculateSize( Dimension::Type dimension, const Vector2& maximumSize );
1045 * @brief Clamp a dimension given the relayout constraints on this actor
1047 * @param[in] size The size to constrain
1048 * @param[in] dimension The dimension the size exists in
1049 * @return Return the clamped size
1051 float ClampDimension( float size, Dimension::Type dimension );
1054 * Negotiate a dimension based on the size of the parent
1056 * @param[in] dimension The dimension to negotiate on
1057 * @return Return the negotiated size
1059 float NegotiateFromParent( Dimension::Type dimension );
1062 * Negotiate a dimension based on the size of the parent. Fitting inside.
1064 * @param[in] dimension The dimension to negotiate on
1065 * @return Return the negotiated size
1067 float NegotiateFromParentFit( Dimension::Type dimension );
1070 * Negotiate a dimension based on the size of the parent. Flooding the whole space.
1072 * @param[in] dimension The dimension to negotiate on
1073 * @return Return the negotiated size
1075 float NegotiateFromParentFlood( Dimension::Type dimension );
1078 * @brief Negotiate a dimension based on the size of the children
1080 * @param[in] dimension The dimension to negotiate on
1081 * @return Return the negotiated size
1083 float NegotiateFromChildren( Dimension::Type dimension );
1086 * Set the negotiated dimension value for the given dimension(s)
1088 * @param negotiatedDimension The value to set
1089 * @param dimension The dimension(s) to set the value for
1091 void SetNegotiatedDimension( float negotiatedDimension, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1094 * Return the value of negotiated dimension for the given dimension
1096 * @param dimension The dimension to retrieve
1097 * @return Return the value of the negotiated dimension
1099 float GetNegotiatedDimension( Dimension::Type dimension ) const;
1102 * @brief Set the padding for a dimension
1104 * @param[in] padding Padding for the dimension. X = start (e.g. left, bottom), y = end (e.g. right, top)
1105 * @param[in] dimension The dimension to set
1107 void SetPadding( const Vector2& padding, Dimension::Type dimension );
1110 * Return the value of padding for the given dimension
1112 * @param dimension The dimension to retrieve
1113 * @return Return the value of padding for the dimension
1115 Vector2 GetPadding( Dimension::Type dimension ) const;
1118 * Return the actor size for a given dimension
1120 * @param[in] dimension The dimension to retrieve the size for
1121 * @return Return the size for the given dimension
1123 float GetSize( Dimension::Type dimension ) const;
1126 * Return the natural size of the actor for a given dimension
1128 * @param[in] dimension The dimension to retrieve the size for
1129 * @return Return the natural size for the given dimension
1131 float GetNaturalSize( Dimension::Type dimension ) const;
1134 * @brief Return the amount of size allocated for relayout
1136 * May include padding
1138 * @param[in] dimension The dimension to retrieve
1139 * @return Return the size
1141 float GetRelayoutSize( Dimension::Type dimension ) const;
1144 * @brief If the size has been negotiated return that else return normal size
1146 * @param[in] dimension The dimension to retrieve
1147 * @return Return the size
1149 float GetLatestSize( Dimension::Type dimension ) const;
1152 * Apply the negotiated size to the actor
1154 * @param[in] container The container to fill with actors that require further relayout
1156 void SetNegotiatedSize( RelayoutContainer& container );
1159 * @brief Flag the actor as having it's layout dimension negotiated.
1161 * @param[in] negotiated The status of the flag to set.
1162 * @param[in] dimension The dimension to set the flag for
1164 void SetLayoutNegotiated( bool negotiated, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1167 * @brief Test whether the layout dimension for this actor has been negotiated or not.
1169 * @param[in] dimension The dimension to determine the value of the flag for
1170 * @return Return if the layout dimension is negotiated or not.
1172 bool IsLayoutNegotiated( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
1175 * @brief provides the Actor implementation of GetHeightForWidth
1176 * @param width to use.
1177 * @return the height based on the width.
1179 float GetHeightForWidthBase( float width );
1182 * @brief provides the Actor implementation of GetWidthForHeight
1183 * @param height to use.
1184 * @return the width based on the height.
1186 float GetWidthForHeightBase( float height );
1189 * @brief Calculate the size for a child
1191 * @param[in] child The child actor to calculate the size for
1192 * @param[in] dimension The dimension to calculate the size for. E.g. width or height.
1193 * @return Return the calculated size for the given dimension
1195 float CalculateChildSizeBase( const Dali::Actor& child, Dimension::Type dimension );
1198 * @brief Set the preferred size for size negotiation
1200 * @param[in] size The preferred size to set
1202 void SetPreferredSize( const Vector2& size );
1205 * @brief Return the preferred size used for size negotiation
1207 * @return Return the preferred size
1209 Vector2 GetPreferredSize() const;
1212 * @copydoc Dali::Actor::SetMinimumSize
1214 void SetMinimumSize( float size, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1217 * @copydoc Dali::Actor::GetMinimumSize
1219 float GetMinimumSize( Dimension::Type dimension ) const;
1222 * @copydoc Dali::Actor::SetMaximumSize
1224 void SetMaximumSize( float size, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1227 * @copydoc Dali::Actor::GetMaximumSize
1229 float GetMaximumSize( Dimension::Type dimension ) const;
1232 * @copydoc Dali::Actor::AddRenderer()
1234 uint32_t AddRenderer( Renderer& renderer );
1237 * @copydoc Dali::Actor::GetRendererCount()
1239 uint32_t GetRendererCount() const;
1242 * @copydoc Dali::Actor::GetRendererAt()
1244 RendererPtr GetRendererAt( uint32_t index );
1247 * @copydoc Dali::Actor::RemoveRenderer()
1249 void RemoveRenderer( Renderer& renderer );
1252 * @copydoc Dali::Actor::RemoveRenderer()
1254 void RemoveRenderer( uint32_t index );
1259 * Converts screen coordinates into the actor's coordinate system.
1260 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1261 * @param[out] localX On return, the X-coordinate relative to the actor.
1262 * @param[out] localY On return, the Y-coordinate relative to the actor.
1263 * @param[in] screenX The screen X-coordinate.
1264 * @param[in] screenY The screen Y-coordinate.
1265 * @return True if the conversion succeeded.
1267 bool ScreenToLocal( float& localX, float& localY, float screenX, float screenY ) const;
1270 * Converts screen coordinates into the actor's coordinate system.
1271 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1272 * @param[in] renderTask The render-task used to display the actor.
1273 * @param[out] localX On return, the X-coordinate relative to the actor.
1274 * @param[out] localY On return, the Y-coordinate relative to the actor.
1275 * @param[in] screenX The screen X-coordinate.
1276 * @param[in] screenY The screen Y-coordinate.
1277 * @return True if the conversion succeeded.
1279 bool ScreenToLocal( const RenderTask& renderTask, float& localX, float& localY, float screenX, float screenY ) const;
1282 * Converts from the actor's coordinate system to screen coordinates.
1283 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1284 * @param[in] viewMatrix The view-matrix
1285 * @param[in] projectionMatrix The projection-matrix
1286 * @param[in] viewport The view-port
1287 * @param[out] localX On return, the X-coordinate relative to the actor.
1288 * @param[out] localY On return, the Y-coordinate relative to the actor.
1289 * @param[in] screenX The screen X-coordinate.
1290 * @param[in] screenY The screen Y-coordinate.
1291 * @return True if the conversion succeeded.
1293 bool ScreenToLocal( const Matrix& viewMatrix,
1294 const Matrix& projectionMatrix,
1295 const Viewport& viewport,
1299 float screenY ) const;
1302 * Performs a ray-sphere test with the given pick-ray and the actor's bounding sphere.
1303 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1304 * @param[in] rayOrigin The ray origin in the world's reference system.
1305 * @param[in] rayDir The ray director vector in the world's reference system.
1306 * @return True if the ray intersects the actor's bounding sphere.
1308 bool RaySphereTest( const Vector4& rayOrigin, const Vector4& rayDir ) const;
1311 * Performs a ray-actor test with the given pick-ray and the actor's geometry.
1312 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1313 * @param[in] rayOrigin The ray origin in the world's reference system.
1314 * @param[in] rayDir The ray director vector in the world's reference system.
1315 * @param[out] hitPointLocal The hit point in the Actor's local reference system.
1316 * @param[out] distance The distance from the hit point to the camera.
1317 * @return True if the ray intersects the actor's geometry.
1319 bool RayActorTest( const Vector4& rayOrigin,
1320 const Vector4& rayDir,
1321 Vector2& hitPointLocal,
1322 float& distance ) const;
1325 * Sets whether the actor should receive a notification when touch or hover motion events leave
1326 * the boundary of the actor.
1328 * @note By default, this is set to false as most actors do not require this.
1329 * @note Need to connect to the SignalTouch or SignalHover to actually receive this event.
1331 * @param[in] required Should be set to true if a Leave event is required
1333 void SetLeaveRequired( bool required );
1336 * This returns whether the actor requires touch or hover events whenever touch or hover motion events leave
1337 * the boundary of the actor.
1338 * @return true if a Leave event is required, false otherwise.
1340 bool GetLeaveRequired() const;
1343 * @copydoc Dali::Actor::SetKeyboardFocusable()
1345 void SetKeyboardFocusable( bool focusable );
1348 * @copydoc Dali::Actor::IsKeyboardFocusable()
1350 bool IsKeyboardFocusable() const;
1353 * Query whether the application or derived actor type requires touch events.
1354 * @return True if touch events are required.
1356 bool GetTouchRequired() const;
1359 * Query whether the application or derived actor type requires hover events.
1360 * @return True if hover events are required.
1362 bool GetHoverRequired() const;
1365 * Query whether the application or derived actor type requires wheel events.
1366 * @return True if wheel events are required.
1368 bool GetWheelEventRequired() const;
1371 * Query whether the actor is actually hittable. This method checks whether the actor is
1372 * sensitive, has the visibility flag set to true and is not fully transparent.
1373 * @return true, if it can be hit, false otherwise.
1375 bool IsHittable() const;
1378 * Query whether the actor captures all touch after it starts even if touch leaves its boundary.
1379 * @return true, if it captures all touch after start
1381 bool CapturesAllTouchAfterStart() const
1383 return mCaptureAllTouchAfterStart;
1389 * Retrieve the gesture data associated with this actor. The first call to this method will
1390 * allocate space for the ActorGestureData so this should only be called if an actor really does
1392 * @return Reference to the ActorGestureData for this actor.
1393 * @note Once the gesture-data is created for an actor it is likely that gestures are required
1394 * throughout the actor's lifetime so it will only be deleted when the actor is destroyed.
1396 ActorGestureData& GetGestureData();
1399 * Queries whether the actor requires the gesture type.
1400 * @param[in] type The gesture type.
1401 * @return True if the gesture is required, false otherwise.
1403 bool IsGestureRequred( DevelGesture::Type type ) const;
1408 * Used by the EventProcessor to emit touch event signals.
1409 * @param[in] touch The touch data.
1410 * @return True if the event was consumed.
1412 bool EmitTouchEventSignal( const Dali::TouchEvent& touch );
1415 * Used by the EventProcessor to emit hover event signals.
1416 * @param[in] event The hover event.
1417 * @return True if the event was consumed.
1419 bool EmitHoverEventSignal( const Dali::HoverEvent& event );
1422 * Used by the EventProcessor to emit wheel event signals.
1423 * @param[in] event The wheel event.
1424 * @return True if the event was consumed.
1426 bool EmitWheelEventSignal( const Dali::WheelEvent& event );
1429 * @brief Emits the visibility change signal for this actor and all its children.
1430 * @param[in] visible Whether the actor has become visible or not.
1431 * @param[in] type Whether the actor's visible property has changed or a parent's.
1433 void EmitVisibilityChangedSignal( bool visible, DevelActor::VisibilityChange::Type type );
1436 * @brief Emits the layout direction change signal for this actor and all its children.
1437 * @param[in] type Whether the actor's layout direction property has changed or a parent's.
1439 void EmitLayoutDirectionChangedSignal( LayoutDirection::Type type );
1442 * @brief Emits the ChildAdded signal for this actor
1443 * @param[in] child The child actor that has been added
1445 void EmitChildAddedSignal( Actor& child );
1448 * @brief Emits the ChildRemoved signal for this actor
1449 * @param[in] child The child actor that has been removed
1451 void EmitChildRemovedSignal( Actor& child );
1454 * @copydoc Dali::Actor::TouchEventSignal()
1456 Dali::Actor::TouchEventSignalType& TouchSignal();
1459 * @copydoc Dali::Actor::HoveredSignal()
1461 Dali::Actor::HoverSignalType& HoveredSignal();
1464 * @copydoc Dali::Actor::WheelEventSignal()
1466 Dali::Actor::WheelEventSignalType& WheelEventSignal();
1469 * @copydoc Dali::Actor::OnSceneSignal()
1471 Dali::Actor::OnSceneSignalType& OnSceneSignal();
1474 * @copydoc Dali::Actor::OffSceneSignal()
1476 Dali::Actor::OffSceneSignalType& OffSceneSignal();
1479 * @copydoc Dali::Actor::OnRelayoutSignal()
1481 Dali::Actor::OnRelayoutSignalType& OnRelayoutSignal();
1484 * @copydoc DevelActor::VisibilityChangedSignal
1486 DevelActor::VisibilityChangedSignalType& VisibilityChangedSignal();
1489 * @copydoc LayoutDirectionChangedSignal
1491 Dali::Actor::LayoutDirectionChangedSignalType& LayoutDirectionChangedSignal();
1494 * @copydoc DevelActor::ChildAddedSignal
1496 DevelActor::ChildChangedSignalType& ChildAddedSignal();
1499 * @copydoc DevelActor::ChildRemovedSignal
1501 DevelActor::ChildChangedSignalType& ChildRemovedSignal();
1504 * @copydoc DevelActor::ChildOrderChangedSignal
1506 DevelActor::ChildOrderChangedSignalType& ChildOrderChangedSignal();
1509 * Connects a callback function with the object's signals.
1510 * @param[in] object The object providing the signal.
1511 * @param[in] tracker Used to disconnect the signal.
1512 * @param[in] signalName The signal to connect to.
1513 * @param[in] functor A newly allocated FunctorDelegate.
1514 * @return True if the signal was connected.
1515 * @post If a signal was connected, ownership of functor was passed to CallbackBase. Otherwise the caller is responsible for deleting the unused functor.
1517 static bool DoConnectSignal( BaseObject* object,
1518 ConnectionTrackerInterface* tracker,
1519 const std::string& signalName,
1520 FunctorDelegate* functor );
1523 * Performs actions as requested using the action name.
1524 * @param[in] object The object on which to perform the action.
1525 * @param[in] actionName The action to perform.
1526 * @param[in] attributes The attributes with which to perfrom this action.
1527 * @return true if the action was done.
1529 static bool DoAction( BaseObject* object,
1530 const std::string& actionName,
1531 const Property::Map& attributes );
1537 * For use in derived classes.
1538 * This should only be called by Animation, when the actor is resized using Animation::Resize().
1540 virtual void OnSizeAnimation( Animation& animation, const Vector3& targetSize )
1548 BASIC, LAYER, ROOT_LAYER
1552 * Protected Constructor. See Actor::New().
1553 * The second-phase construction Initialize() member should be called immediately after this.
1554 * @param[in] derivedType The derived type of actor (if any).
1555 * @param[in] reference to the node
1557 Actor( DerivedType derivedType, const SceneGraph::Node& node );
1560 * Second-phase constructor. Must be called immediately after creating a new Actor;
1562 void Initialize( void );
1565 * A reference counted object may only be deleted by calling Unreference()
1570 * Called on a child during Add() when the parent actor is connected to the Scene.
1571 * @param[in] parentDepth The depth of the parent in the hierarchy.
1573 void ConnectToScene( uint32_t parentDepth );
1576 * Helper for ConnectToScene, to recursively connect a tree of actors.
1577 * This is atomic i.e. not interrupted by user callbacks.
1578 * @param[in] depth The depth in the hierarchy of the actor
1579 * @param[out] connectionList On return, the list of connected actors which require notification.
1581 void RecursiveConnectToScene( ActorContainer& connectionList, uint32_t depth );
1584 * Connect the Node associated with this Actor to the scene-graph.
1586 void ConnectToSceneGraph();
1589 * Helper for ConnectToScene, to notify a connected actor through the public API.
1591 void NotifyStageConnection();
1594 * Called on a child during Remove() when the actor was previously on the Stage.
1596 void DisconnectFromStage();
1599 * Helper for DisconnectFromStage, to recursively disconnect a tree of actors.
1600 * This is atomic i.e. not interrupted by user callbacks.
1601 * @param[out] disconnectionList On return, the list of disconnected actors which require notification.
1603 void RecursiveDisconnectFromStage( ActorContainer& disconnectionList );
1606 * Disconnect the Node associated with this Actor from the scene-graph.
1608 void DisconnectFromSceneGraph();
1611 * Helper for DisconnectFromStage, to notify a disconnected actor through the public API.
1613 void NotifyStageDisconnection();
1616 * When the Actor is OnScene, checks whether the corresponding Node is connected to the scene graph.
1617 * @return True if the Actor is OnScene & has a Node connected to the scene graph.
1619 bool IsNodeConnected() const;
1623 * Trigger a rebuild of the actor depth tree from this root
1624 * If a Layer3D is encountered, then this doesn't descend any further.
1625 * The mSortedDepth of each actor is set appropriately.
1627 void RebuildDepthTree();
1632 * Traverse the actor tree, inserting actors into the depth tree in sibling order.
1633 * @param[in] sceneGraphNodeDepths A vector capturing the nodes and their depth index
1634 * @param[in,out] depthIndex The current depth index (traversal index)
1636 void DepthTraverseActorTree( OwnerPointer<SceneGraph::NodeDepths>& sceneGraphNodeDepths, int32_t& depthIndex );
1640 // Default property extensions from Object
1643 * @copydoc Dali::Internal::Object::SetDefaultProperty()
1645 virtual void SetDefaultProperty( Property::Index index, const Property::Value& propertyValue );
1648 * @copydoc Dali::Internal::Object::SetSceneGraphProperty()
1650 virtual void SetSceneGraphProperty( Property::Index index, const PropertyMetadata& entry, const Property::Value& value );
1653 * @copydoc Dali::Internal::Object::GetDefaultProperty()
1655 virtual Property::Value GetDefaultProperty( Property::Index index ) const;
1658 * @copydoc Dali::Internal::Object::GetDefaultPropertyCurrentValue()
1660 virtual Property::Value GetDefaultPropertyCurrentValue( Property::Index index ) const;
1663 * @copydoc Dali::Internal::Object::OnNotifyDefaultPropertyAnimation()
1665 virtual void OnNotifyDefaultPropertyAnimation( Animation& animation, Property::Index index, const Property::Value& value, Animation::Type animationType );
1668 * @copydoc Dali::Internal::Object::GetSceneObjectAnimatableProperty()
1670 virtual const SceneGraph::PropertyBase* GetSceneObjectAnimatableProperty( Property::Index index ) const;
1673 * @copydoc Dali::Internal::Object::GetSceneObjectInputProperty()
1675 virtual const PropertyInputImpl* GetSceneObjectInputProperty( Property::Index index ) const;
1678 * @copydoc Dali::Internal::Object::GetPropertyComponentIndex()
1680 virtual int32_t GetPropertyComponentIndex( Property::Index index ) const;
1683 * Retrieve the actor's node.
1684 * @return The node used by this actor
1686 const SceneGraph::Node& GetNode() const
1688 return *static_cast<const SceneGraph::Node*>( mUpdateObject );
1692 * @copydoc Dali::DevelActor::Raise()
1697 * @copydoc Dali::DevelActor::Lower()
1702 * @copydoc Dali::DevelActor::RaiseToTop()
1707 * @copydoc Dali::DevelActor::LowerToBottom()
1709 void LowerToBottom();
1712 * @copydoc Dali::DevelActor::RaiseAbove()
1714 void RaiseAbove( Internal::Actor& target );
1717 * @copydoc Dali::DevelActor::LowerBelow()
1719 void LowerBelow( Internal::Actor& target );
1724 * Sets the scene which this actor is added to.
1725 * @param[in] scene The scene
1727 void SetScene( Scene& scene );
1730 * Gets the scene which this actor is added to.
1733 Scene& GetScene() const;
1746 struct AnimatedSizeFlag
1757 // Remove default constructor and copy constructor
1759 Actor( const Actor& ) = delete;
1760 Actor& operator=( const Actor& rhs ) = delete;
1763 * Set the actors parent.
1764 * @param[in] parent The new parent.
1766 void SetParent( Actor* parent );
1769 * For use in derived classes, called after Initialize()
1771 virtual void OnInitialize()
1776 * For use in internal derived classes.
1777 * This is called during ConnectToScene(), after the actor has finished adding its node to the scene-graph.
1778 * The derived class must not modify the actor hierachy (Add/Remove children) during this callback.
1780 virtual void OnSceneConnectionInternal()
1785 * For use in internal derived classes.
1786 * This is called during DisconnectFromStage(), before the actor removes its node from the scene-graph.
1787 * The derived class must not modify the actor hierachy (Add/Remove children) during this callback.
1789 virtual void OnSceneDisconnectionInternal()
1794 * For use in external (CustomActor) derived classes.
1795 * This is called after the atomic ConnectToScene() traversal has been completed.
1797 virtual void OnSceneConnectionExternal( int depth )
1802 * For use in external (CustomActor) derived classes.
1803 * This is called after the atomic DisconnectFromStage() traversal has been completed.
1805 virtual void OnSceneDisconnectionExternal()
1810 * For use in derived classes; this is called after Add() has added a child.
1811 * @param[in] child The child that was added.
1813 virtual void OnChildAdd( Actor& child )
1818 * For use in derived classes; this is called after Remove() has attempted to remove a child( regardless of whether it succeeded or not ).
1819 * @param[in] child The child that was removed.
1821 virtual void OnChildRemove( Actor& child )
1826 * For use in derived classes.
1827 * This is called after SizeSet() has been called.
1829 virtual void OnSizeSet( const Vector3& targetSize )
1834 * For use in derived classes.
1835 * This is only called if mDerivedRequiresHover is true, and the hover-signal was not consumed.
1836 * @param[in] event The hover event.
1837 * @return True if the event should be consumed.
1839 virtual bool OnHoverEvent( const HoverEvent& event )
1845 * For use in derived classes.
1846 * This is only called if the wheel signal was not consumed.
1847 * @param[in] event The wheel event.
1848 * @return True if the event should be consumed.
1850 virtual bool OnWheelEvent( const WheelEvent& event )
1856 * @brief Retrieves the cached event side value of a default property.
1857 * @param[in] index The index of the property
1858 * @param[out] value Is set with the cached value of the property if found.
1859 * @return True if value set, false otherwise.
1861 bool GetCachedPropertyValue( Property::Index index, Property::Value& value ) const;
1864 * @brief Retrieves the current value of a default property from the scene-graph.
1865 * @param[in] index The index of the property
1866 * @param[out] value Is set with the current scene-graph value of the property
1867 * @return True if value set, false otherwise.
1869 bool GetCurrentPropertyValue( Property::Index index, Property::Value& value ) const;
1872 * @brief Ensure the relayout data is allocated
1874 void EnsureRelayoutData();
1877 * @brief Apply the size set policy to the input size
1879 * @param[in] size The size to apply the policy to
1880 * @return Return the adjusted size
1882 Vector2 ApplySizeSetPolicy( const Vector2& size );
1885 * Retrieve the parent object of an Actor.
1886 * @return The parent object, or NULL if the Actor does not have a parent.
1888 virtual Object* GetParentObject() const;
1892 * @param[in] order The sibling order this Actor should be. It will place
1893 * the actor at this index in it's parent's child array.
1895 void SetSiblingOrder( uint32_t order);
1899 * @return the order of this actor amongst it's siblings
1901 uint32_t GetSiblingOrder() const;
1904 * Request that the stage rebuilds the actor depth indices.
1906 void RequestRebuildDepthTree();
1909 * @brief Get the current position of the actor in screen coordinates.
1911 * @return Returns the screen position of actor
1913 const Vector2 GetCurrentScreenPosition() const;
1916 * Sets the visibility flag of an actor.
1917 * @param[in] visible The new visibility flag.
1918 * @param[in] sendMessage Whether to send a message to the update thread or not.
1920 void SetVisibleInternal( bool visible, SendMessage::Type sendMessage );
1923 * Set whether a child actor inherits it's parent's layout direction. Default is to inherit.
1924 * @param[in] inherit - true if the actor should inherit layout direction, false otherwise.
1926 void SetInheritLayoutDirection( bool inherit );
1929 * Returns whether the actor inherits it's parent's layout direction.
1930 * @return true if the actor inherits it's parent's layout direction, false otherwise.
1932 bool IsLayoutDirectionInherited() const;
1935 * @brief Propagates layout direction recursively.
1936 * @param[in] actor The actor for seting layout direction.
1937 * @param[in] direction New layout direction.
1939 void InheritLayoutDirectionRecursively( ActorPtr actor, Dali::LayoutDirection::Type direction, bool set = false );
1942 * @brief Sets the update size hint of an actor.
1943 * @param [in] updateSizeHint The update size hint.
1945 void SetUpdateSizeHint( const Vector2& updateSizeHint );
1948 * @brief Return the update size hint of actor
1949 * @return Return the update size hint
1951 Vector2 GetUpdateSizeHint() const;
1955 Scene* mScene; ///< The scene the actor is added to
1957 Actor* mParent; ///< Each actor (except the root) can have one parent
1958 ActorContainer* mChildren; ///< Container of referenced actors, lazily initialized
1959 RendererContainer* mRenderers; ///< Renderer container
1961 Vector3* mParentOrigin; ///< NULL means ParentOrigin::DEFAULT. ParentOrigin is non-animatable
1962 Vector3* mAnchorPoint; ///< NULL means AnchorPoint::DEFAULT. AnchorPoint is non-animatable
1964 struct RelayoutData;
1965 RelayoutData* mRelayoutData; ///< Struct to hold optional collection of relayout variables
1967 ActorGestureData* mGestureData; ///< Optional Gesture data. Only created when actor requires gestures
1970 Dali::Actor::TouchEventSignalType mTouchSignal;
1971 Dali::Actor::HoverSignalType mHoveredSignal;
1972 Dali::Actor::WheelEventSignalType mWheelEventSignal;
1973 Dali::Actor::OnSceneSignalType mOnSceneSignal;
1974 Dali::Actor::OffSceneSignalType mOffSceneSignal;
1975 Dali::Actor::OnRelayoutSignalType mOnRelayoutSignal;
1976 DevelActor::VisibilityChangedSignalType mVisibilityChangedSignal;
1977 Dali::Actor::LayoutDirectionChangedSignalType mLayoutDirectionChangedSignal;
1978 DevelActor::ChildChangedSignalType mChildAddedSignal;
1979 DevelActor::ChildChangedSignalType mChildRemovedSignal;
1980 DevelActor::ChildOrderChangedSignalType mChildOrderChangedSignal;
1982 Quaternion mTargetOrientation; ///< Event-side storage for orientation
1983 Vector4 mTargetColor; ///< Event-side storage for color
1984 Vector3 mTargetSize; ///< Event-side storage for size (not a pointer as most actors will have a size)
1985 Vector3 mTargetPosition; ///< Event-side storage for position (not a pointer as most actors will have a position)
1986 Vector3 mTargetScale; ///< Event-side storage for scale
1987 Vector3 mAnimatedSize; ///< Event-side storage for size animation
1989 std::string mName; ///< Name of the actor
1990 uint32_t mSortedDepth; ///< The sorted depth index. A combination of tree traversal and sibling order.
1991 int16_t mDepth; ///< The depth in the hierarchy of the actor. Only 32,767 levels of depth are supported
1992 uint16_t mUseAnimatedSize; ///< Whether the size is animated.
1994 const bool mIsRoot : 1; ///< Flag to identify the root actor
1995 const bool mIsLayer : 1; ///< Flag to identify that this is a layer
1996 bool mIsOnScene : 1; ///< Flag to identify whether the actor is on-scene
1997 bool mSensitive : 1; ///< Whether the actor emits touch event signals
1998 bool mLeaveRequired : 1; ///< Whether a touch event signal is emitted when the a touch leaves the actor's bounds
1999 bool mKeyboardFocusable : 1; ///< Whether the actor should be focusable by keyboard navigation
2000 bool mDerivedRequiresTouch : 1; ///< Whether the derived actor type requires touch event signals
2001 bool mDerivedRequiresHover : 1; ///< Whether the derived actor type requires hover event signals
2002 bool mDerivedRequiresWheelEvent : 1; ///< Whether the derived actor type requires wheel event signals
2003 bool mOnSceneSignalled : 1; ///< Set to true before OnSceneConnection signal is emitted, and false before OnSceneDisconnection
2004 bool mInsideOnSizeSet : 1; ///< Whether we are inside OnSizeSet
2005 bool mInheritPosition : 1; ///< Cached: Whether the parent's position should be inherited.
2006 bool mInheritOrientation : 1; ///< Cached: Whether the parent's orientation should be inherited.
2007 bool mInheritScale : 1; ///< Cached: Whether the parent's scale should be inherited.
2008 bool mPositionUsesAnchorPoint : 1; ///< Cached: Whether the position uses the anchor point or not.
2009 bool mVisible : 1; ///< Cached: Whether the actor is visible or not.
2010 bool mInheritLayoutDirection : 1; ///< Whether the actor inherits the layout direction from parent.
2011 bool mCaptureAllTouchAfterStart : 1; ///< Whether the actor should capture all touch after touch starts even if the motion moves outside of the actor area.
2012 LayoutDirection::Type mLayoutDirection : 2; ///< Layout direction, Left to Right or Right to Left.
2013 DrawMode::Type mDrawMode : 3; ///< Cached: How the actor and its children should be drawn
2014 ColorMode mColorMode : 3; ///< Cached: Determines whether mWorldColor is inherited
2015 ClippingMode::Type mClippingMode : 3; ///< Cached: Determines which clipping mode (if any) to use.
2019 static ActorContainer mNullChildren; ///< Empty container (shared by all actors, returned by GetChildren() const)
2023 } // namespace Internal
2025 // Helpers for public-api forwarding methods
2027 inline Internal::Actor& GetImplementation( Dali::Actor& actor )
2029 DALI_ASSERT_ALWAYS( actor && "Actor handle is empty" );
2031 BaseObject& handle = actor.GetBaseObject();
2033 return static_cast< Internal::Actor& >( handle );
2036 inline const Internal::Actor& GetImplementation( const Dali::Actor& actor )
2038 DALI_ASSERT_ALWAYS( actor && "Actor handle is empty" );
2040 const BaseObject& handle = actor.GetBaseObject();
2042 return static_cast< const Internal::Actor& >( handle );
2047 #endif // DALI_INTERNAL_ACTOR_H