1 #ifndef __DALI_INTERNAL_ACTOR_H__
2 #define __DALI_INTERNAL_ACTOR_H__
5 * Copyright (c) 2014 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
17 * limitations under the License.
25 #include <dali/public-api/common/vector-wrapper.h>
26 #include <dali/public-api/object/ref-object.h>
27 #include <dali/public-api/actors/actor.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/internal/event/common/object-impl.h>
32 #include <dali/public-api/size-negotiation/relayout-container.h>
33 #include <dali/internal/event/common/stage-def.h>
34 #include <dali/internal/event/actors/actor-declarations.h>
35 #include <dali/internal/event/actors/renderer-impl.h>
36 #include <dali/internal/event/actor-attachments/actor-attachment-declarations.h>
37 #include <dali/internal/update/nodes/node-declarations.h>
39 #ifdef DYNAMICS_SUPPORT
40 #include <dali/internal/event/dynamics/dynamics-declarations.h>
49 struct MouseWheelEvent;
55 class ActorGestureData;
61 typedef IntrusivePtr< Actor > ActorPtr;
62 typedef Dali::ActorContainer ActorContainer; // Store handles to return via public-api
63 typedef ActorContainer::iterator ActorIter;
64 typedef ActorContainer::const_iterator ActorConstIter;
67 * Actor is the primary object which Dali applications interact with.
68 * UI controls can be built by combining multiple actors.
69 * Multi-Touch events are received through signals emitted by the actor tree.
71 * An Actor is a proxy for a Node in the scene graph.
72 * When an Actor is added to the Stage, it creates a node and attaches it to the scene graph.
73 * The scene-graph can be updated in a separate thread, so the attachment is done using an asynchronous message.
74 * When a tree of Actors is detached from the Stage, a message is sent to destroy the associated nodes.
76 class Actor : public Object
81 * @brief Struct to hold an actor and a dimension
83 struct ActorDimensionPair
88 * @param[in] newActor The actor to assign
89 * @param[in] newDimension The dimension to assign
91 ActorDimensionPair( Actor* newActor, Dimension::Type newDimension )
93 dimension( newDimension )
98 * @brief Equality operator
100 * @param[in] lhs The left hand side argument
101 * @param[in] rhs The right hand side argument
103 bool operator== ( const ActorDimensionPair& rhs )
105 return ( actor == rhs.actor ) && ( dimension == rhs.dimension );
108 Actor* actor; ///< The actor to hold
109 Dimension::Type dimension; ///< The dimension to hold
112 typedef std::vector< ActorDimensionPair > ActorDimensionStack;
117 * Create a new actor.
118 * @return A smart-pointer to the newly allocated Actor.
120 static ActorPtr New();
123 * Retrieve the name of the actor.
126 const std::string& GetName() const;
129 * Set the name of the actor.
130 * @param[in] name The new name.
132 void SetName( const std::string& name );
135 * @copydoc Dali::Actor::GetId
137 unsigned int GetId() const;
142 * Attach an object to an actor.
143 * @pre The actor does not already have an attachment.
144 * @param[in] attachment The object to attach.
146 void Attach( ActorAttachment& attachment );
149 * Retreive the object attached to an actor.
150 * @return The attachment.
152 ActorAttachmentPtr GetAttachment();
157 * Query whether an actor is the root actor, which is owned by the Stage.
158 * @return True if the actor is a root actor.
166 * Query whether the actor is connected to the Stage.
168 bool OnStage() const;
171 * Query whether the actor is a RenderableActor derived type.
172 * @return True if the actor is renderable.
174 bool IsRenderable() const
176 // inlined as this is called a lot in hit testing
177 return mIsRenderable;
181 * Query whether the actor is of class Dali::Layer
182 * @return True if the actor is a layer.
186 // inlined as this is called a lot in hit testing
191 * Gets the layer in which the actor is present
192 * @return The layer, which will be uninitialized if the actor is off-stage.
194 Dali::Layer GetLayer();
197 * Adds a child Actor to this Actor.
198 * @pre The child actor is not the same as the parent actor.
199 * @pre The child actor does not already have a parent.
200 * @param [in] child The child.
201 * @post The child will be referenced by its parent.
203 void Add( Actor& child );
206 * Inserts a child Actor to this Actor's child list
207 * @pre The child actor is not the same as the parent actor.
208 * @pre The child actor does not already have a parent.
209 * @param [in] index in childlist to insert child at
210 * @param [in] child The child.
211 * @post The child will be referenced by its parent.
213 void Insert( unsigned int index, Actor& child );
216 * Removes a child Actor from this Actor.
217 * @param [in] child The child.
218 * @post The child will be unreferenced.
220 void Remove( Actor& child );
223 * @copydoc Dali::Actor::Unparent
228 * Retrieve the number of children held by the actor.
229 * @return The number of children
231 unsigned int GetChildCount() const;
234 * @copydoc Dali::Actor::GetChildAt
236 Dali::Actor GetChildAt( unsigned int index ) const;
239 * Retrieve the Actor's children.
240 * @return A copy of the container of children.
242 ActorContainer GetChildren();
245 * Retrieve the Actor's children.
246 * @return A const reference to the container of children.
248 const ActorContainer& GetChildren() const;
251 * Retrieve a reference to Actor's children.
252 * @note Not for public use.
253 * @return A reference to the container of children.
255 ActorContainer& GetChildrenInternal()
261 * @copydoc Dali::Actor::FindChildByName
263 ActorPtr FindChildByName( const std::string& actorName );
266 * @copydoc Dali::Actor::FindChildById
268 ActorPtr FindChildById( const unsigned int id );
271 * Retrieve the parent of an Actor.
272 * @return The parent actor, or NULL if the Actor does not have a parent.
274 Actor* GetParent() const
280 * Sets the size of an actor.
281 * ActorAttachments attached to the actor, can be scaled to fit within this area.
282 * This does not interfere with the actors scale factor.
283 * @param [in] width The new width.
284 * @param [in] height The new height.
286 void SetSize( float width, float height );
289 * Sets the size of an actor.
290 * ActorAttachments attached to the actor, can be scaled to fit within this area.
291 * This does not interfere with the actors scale factor.
292 * @param [in] width The size of the actor along the x-axis.
293 * @param [in] height The size of the actor along the y-axis.
294 * @param [in] depth The size of the actor along the z-axis.
296 void SetSize( float width, float height, float depth );
299 * Sets the size of an actor.
300 * ActorAttachments attached to the actor, can be scaled to fit within this area.
301 * This does not interfere with the actors scale factor.
302 * @param [in] size The new size.
304 void SetSize( const Vector2& size );
307 * Sets the update size for an actor.
309 * @param[in] size The size to set.
311 void SetSizeInternal( const Vector2& size );
314 * Sets the size of an actor.
315 * ActorAttachments attached to the actor, can be scaled to fit within this area.
316 * This does not interfere with the actors scale factor.
317 * @param [in] size The new size.
319 void SetSize( const Vector3& size );
322 * Sets the update size for an actor.
324 * @param[in] size The size to set.
326 void SetSizeInternal( const Vector3& size );
329 * Set the width component of the Actor's size.
330 * @param [in] width The new width component.
332 void SetWidth( float width );
335 * Set the height component of the Actor's size.
336 * @param [in] height The new height component.
338 void SetHeight( float height );
341 * Set the depth component of the Actor's size.
342 * @param [in] depth The new depth component.
344 void SetDepth( float depth );
347 * Retrieve the Actor's size from event side.
348 * This size will be the size set or if animating then the target size.
349 * @return The Actor's size.
351 const Vector3& GetTargetSize() const;
354 * Retrieve the Actor's size from update side.
355 * This size will be the size set or animating but will be a frame behind.
356 * @return The Actor's size.
358 const Vector3& GetCurrentSize() const;
361 * Return the natural size of the actor
363 * @return The actor's natural size
365 virtual Vector3 GetNaturalSize() const;
368 * Set the origin of an actor, within its parent's area.
369 * This is expressed in 2D unit coordinates, such that (0.0, 0.0, 0.5) is the top-left corner of the parent,
370 * and (1.0, 1.0, 0.5) is the bottom-right corner.
371 * The default parent-origin is top-left (0.0, 0.0, 0.5).
372 * An actor position is the distance between this origin, and the actors anchor-point.
373 * @param [in] origin The new parent-origin.
375 void SetParentOrigin( const Vector3& origin );
378 * Set the x component of the parent-origin
379 * @param [in] x The new x value.
381 void SetParentOriginX( float x );
384 * Set the y component of the parent-origin
385 * @param [in] y The new y value.
387 void SetParentOriginY( float y );
390 * Set the z component of the parent-origin
391 * @param [in] z The new z value.
393 void SetParentOriginZ( float z );
396 * Retrieve the parent-origin of an actor.
397 * @return The parent-origin.
399 const Vector3& GetCurrentParentOrigin() const;
402 * Set the anchor-point of an actor. This is expressed in 2D unit coordinates, such that
403 * (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.
404 * The default anchor point is top-left (0.0, 0.0, 0.5).
405 * An actor position is the distance between its parent-origin, and this anchor-point.
406 * An actor's rotation is centered around its anchor-point.
407 * @param [in] anchorPoint The new anchor-point.
409 void SetAnchorPoint( const Vector3& anchorPoint );
412 * Set the x component of the anchor-point.
413 * @param [in] x The new x value.
415 void SetAnchorPointX( float x );
418 * Set the y component of the anchor-point.
419 * @param [in] y The new y value.
421 void SetAnchorPointY( float y );
424 * Set the z component of the anchor-point.
425 * @param [in] z The new z value.
427 void SetAnchorPointZ( float z );
430 * Retrieve the anchor-point of an actor.
431 * @return The anchor-point.
433 const Vector3& GetCurrentAnchorPoint() const;
436 * Sets the position of the Actor.
437 * The coordinates are relative to the Actor's parent.
438 * The Actor's z position will be set to 0.0f.
439 * @param [in] x The new x position
440 * @param [in] y The new y position
442 void SetPosition( float x, float y );
445 * Sets the position of the Actor.
446 * The coordinates are relative to the Actor's parent.
447 * @param [in] x The new x position
448 * @param [in] y The new y position
449 * @param [in] z The new z position
451 void SetPosition( float x, float y, float z );
454 * Sets the position of the Actor.
455 * The coordinates are relative to the Actor's parent.
456 * @param [in] position The new position.
458 void SetPosition( const Vector3& position );
461 * Set the position of an actor along the X-axis.
462 * @param [in] x The new x position
464 void SetX( float x );
467 * Set the position of an actor along the Y-axis.
468 * @param [in] y The new y position.
470 void SetY( float y );
473 * Set the position of an actor along the Z-axis.
474 * @param [in] z The new z position
476 void SetZ( float z );
479 * Translate an actor relative to its existing position.
480 * @param[in] distance The actor will move by this distance.
482 void TranslateBy( const Vector3& distance );
485 * Retrieve the position of the Actor.
486 * The coordinates are relative to the Actor's parent.
487 * @return the Actor's position.
489 const Vector3& GetCurrentPosition() const;
492 * Retrieve the target position of the Actor.
493 * The coordinates are relative to the Actor's parent.
494 * @return the Actor's position.
496 const Vector3& GetTargetPosition() const;
499 * @copydoc Dali::Actor::GetCurrentWorldPosition()
501 const Vector3& GetCurrentWorldPosition() const;
504 * @copydoc Dali::Actor::SetPositionInheritanceMode()
506 void SetPositionInheritanceMode( PositionInheritanceMode mode );
509 * @copydoc Dali::Actor::GetPositionInheritanceMode()
511 PositionInheritanceMode GetPositionInheritanceMode() const;
514 * Sets the orientation of the Actor.
515 * @param [in] angleRadians The new orientation angle in radians.
516 * @param [in] axis The new axis of orientation.
518 void SetOrientation( const Radian& angleRadians, const Vector3& axis );
521 * Sets the orientation of the Actor.
522 * @param [in] orientation The new orientation.
524 void SetOrientation( const Quaternion& orientation );
527 * Rotate an actor around its existing rotation axis.
528 * @param[in] angleRadians The angle to the rotation to combine with the existing rotation.
529 * @param[in] axis The axis of the rotation to combine with the existing rotation.
531 void RotateBy( const Radian& angleRadians, const Vector3& axis );
534 * Apply a relative rotation to an actor.
535 * @param[in] relativeRotation The rotation to combine with the actors existing rotation.
537 void RotateBy( const Quaternion& relativeRotation );
540 * Retreive the Actor's orientation.
541 * @return the orientation.
543 const Quaternion& GetCurrentOrientation() const;
546 * Set whether a child actor inherits it's parent's orientation. Default is to inherit.
547 * Switching this off means that using SetOrientation() sets the actor's world orientation.
548 * @param[in] inherit - true if the actor should inherit orientation, false otherwise.
550 void SetInheritOrientation( bool inherit );
553 * Returns whether the actor inherit's it's parent's orientation.
554 * @return true if the actor inherit's it's parent orientation, false if it uses world orientation.
556 bool IsOrientationInherited() const;
559 * Sets the factor of the parents size used for the child actor.
560 * Note: Only used if ResizePolicy is ResizePolicy::SIZE_RELATIVE_TO_PARENT or ResizePolicy::SIZE_FIXED_OFFSET_FROM_PARENT.
561 * @param[in] factor The vector to multiply the parents size by to get the childs size.
563 void SetSizeModeFactor( const Vector3& factor );
566 * Gets the factor of the parents size used for the child actor.
567 * Note: Only used if ResizePolicy is ResizePolicy::SIZE_RELATIVE_TO_PARENT or ResizePolicy::SIZE_FIXED_OFFSET_FROM_PARENT.
568 * @return The vector being used to multiply the parents size by to get the childs size.
570 const Vector3& GetSizeModeFactor() const;
573 * @copydoc Dali::Actor::GetCurrentWorldOrientation()
575 const Quaternion& GetCurrentWorldOrientation() const;
578 * Sets a scale factor applied to an actor.
579 * @param [in] scale The scale factor applied on all axes.
581 void SetScale( float scale );
584 * Sets a scale factor applied to an actor.
585 * @param [in] scaleX The scale factor applied along the x-axis.
586 * @param [in] scaleY The scale factor applied along the y-axis.
587 * @param [in] scaleZ The scale factor applied along the z-axis.
589 void SetScale( float scaleX, float scaleY, float scaleZ );
592 * Sets a scale factor applied to an actor.
593 * @param [in] scale A vector representing the scale factor for each axis.
595 void SetScale( const Vector3& scale );
598 * Set the x component of the scale factor.
599 * @param [in] x The new x value.
601 void SetScaleX( float x );
604 * Set the y component of the scale factor.
605 * @param [in] y The new y value.
607 void SetScaleY( float y );
610 * Set the z component of the scale factor.
611 * @param [in] z The new z value.
613 void SetScaleZ( float z );
616 * Apply a relative scale to an actor.
617 * @param[in] relativeScale The scale to combine with the actors existing scale.
619 void ScaleBy( const Vector3& relativeScale );
622 * Retrieve the scale factor applied to an actor.
623 * @return A vector representing the scale factor for each axis.
625 const Vector3& GetCurrentScale() const;
628 * @copydoc Dali::Actor::GetCurrentWorldScale()
630 const Vector3& GetCurrentWorldScale() const;
633 * @copydoc Dali::Actor::SetInheritScale()
635 void SetInheritScale( bool inherit );
638 * @copydoc Dali::Actor::IsScaleInherited()
640 bool IsScaleInherited() const;
643 * @copydoc Dali::Actor::GetCurrentWorldMatrix()
645 Matrix GetCurrentWorldMatrix() const;
650 * Sets the visibility flag of an actor.
651 * @param [in] visible The new visibility flag.
653 void SetVisible( bool visible );
656 * Retrieve the visibility flag of an actor.
657 * @return The visibility flag.
659 bool IsVisible() const;
662 * Sets the opacity of an actor.
663 * @param [in] opacity The new opacity.
665 void SetOpacity( float opacity );
668 * Retrieve the actor's opacity.
669 * @return The actor's opacity.
671 float GetCurrentOpacity() const;
674 * Sets whether an actor should emit touch or hover signals; see SignalTouch() and SignalHover().
675 * An actor is sensitive by default, which means that as soon as an application connects to the SignalTouch(),
676 * the touch event signal will be emitted, and as soon as an application connects to the SignalHover(), the
677 * hover event signal will be emitted.
679 * If the application wishes to temporarily disable the touch or hover event signal emission, then they can do so by calling:
681 * actor.SetSensitive(false);
684 * Then, to re-enable the touch or hover event signal emission, the application should call:
686 * actor.SetSensitive(true);
689 * @see SignalTouch() and SignalHover().
690 * @note If an actor's sensitivity is set to false, then it's children will not emit a touch or hover event signal either.
691 * @param[in] sensitive true to enable emission of the touch or hover event signals, false otherwise.
693 void SetSensitive( bool sensitive )
695 mSensitive = sensitive;
699 * Query whether an actor emits touch or hover event signals.
700 * @see SetSensitive(bool)
701 * @return true, if emission of touch or hover event signals is enabled, false otherwise.
703 bool IsSensitive() const
709 * @copydoc Dali::Actor::SetDrawMode
711 void SetDrawMode( DrawMode::Type drawMode );
714 * @copydoc Dali::Actor::GetDrawMode
716 DrawMode::Type GetDrawMode() const;
719 * @copydoc Dali::Actor::SetOverlay
721 void SetOverlay( bool enable );
724 * @copydoc Dali::Actor::IsOverlay
726 bool IsOverlay() const;
729 * Sets the actor's color. The final color of actor depends on its color mode.
730 * This final color is applied to the drawable elements of an actor.
731 * @param [in] color The new color.
733 void SetColor( const Vector4& color );
736 * Set the red component of the color.
737 * @param [in] red The new red component.
739 void SetColorRed( float red );
742 * Set the green component of the color.
743 * @param [in] green The new green component.
745 void SetColorGreen( float green );
748 * Set the blue component of the scale factor.
749 * @param [in] blue The new blue value.
751 void SetColorBlue( float blue );
754 * Retrieve the actor's color.
757 const Vector4& GetCurrentColor() const;
760 * Sets the actor's color mode.
761 * Color mode specifies whether Actor uses its own color or inherits its parent color
762 * @param [in] colorMode to use.
764 void SetColorMode( ColorMode colorMode );
767 * Returns the actor's color mode.
768 * @return currently used colorMode.
770 ColorMode GetColorMode() const;
773 * @copydoc Dali::Actor::GetCurrentWorldColor()
775 const Vector4& GetCurrentWorldColor() const;
779 // Size negotiation virtual functions
782 * @brief Called after the size negotiation has been finished for this control.
784 * The control is expected to assign this given size to itself/its children.
786 * Should be overridden by derived classes if they need to layout
787 * actors differently after certain operations like add or remove
788 * actors, resize or after changing specific properties.
790 * Note! As this function is called from inside the size negotiation algorithm, you cannot
791 * call RequestRelayout (the call would just be ignored)
793 * @param[in] size The allocated size.
794 * @param[in,out] container The control should add actors to this container that it is not able
795 * to allocate a size for.
797 virtual void OnRelayout( const Vector2& size, RelayoutContainer& container )
802 * @brief Notification for deriving classes when the resize policy is set
804 * @param[in] policy The policy being set
805 * @param[in] dimension The dimension the policy is being set for
807 virtual void OnSetResizePolicy( ResizePolicy::Type policy, Dimension::Type dimension ) {}
810 * @brief Virtual method to notify deriving classes that relayout dependencies have been
811 * met and the size for this object is about to be calculated for the given dimension
813 * @param dimension The dimension that is about to be calculated
815 virtual void OnCalculateRelayoutSize( Dimension::Type dimension );
818 * @brief Virtual method to notify deriving classes that the size for a dimension
819 * has just been negotiated
821 * @param[in] size The new size for the given dimension
822 * @param[in] dimension The dimension that was just negotiated
824 virtual void OnLayoutNegotiated( float size, Dimension::Type dimension );
827 * @brief Determine if this actor is dependent on it's children for relayout
829 * @param dimension The dimension(s) to check for
830 * @return Return if the actor is dependent on it's children
832 virtual bool RelayoutDependentOnChildren( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
835 * @brief Determine if this actor is dependent on it's children for relayout.
837 * Called from deriving classes
839 * @param dimension The dimension(s) to check for
840 * @return Return if the actor is dependent on it's children
842 virtual bool RelayoutDependentOnChildrenBase( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
845 * @brief Calculate the size for a child
847 * @param[in] child The child actor to calculate the size for
848 * @param[in] dimension The dimension to calculate the size for. E.g. width or height.
849 * @return Return the calculated size for the given dimension
851 virtual float CalculateChildSize( const Dali::Actor& child, Dimension::Type dimension );
854 * @brief This method is called during size negotiation when a height is required for a given width.
856 * Derived classes should override this if they wish to customize the height returned.
858 * @param width to use.
859 * @return the height based on the width.
861 virtual float GetHeightForWidth( float width );
864 * @brief This method is called during size negotiation when a width is required for a given height.
866 * Derived classes should override this if they wish to customize the width returned.
868 * @param height to use.
869 * @return the width based on the width.
871 virtual float GetWidthForHeight( float height );
878 * @brief Called by the RelayoutController to negotiate the size of an actor.
880 * The size allocated by the the algorithm is passed in which the
881 * actor must adhere to. A container is passed in as well which
882 * the actor should populate with actors it has not / or does not
883 * need to handle in its size negotiation.
885 * @param[in] size The allocated size.
886 * @param[in,out] container The container that holds actors that are fed back into the
887 * RelayoutController algorithm.
889 void NegotiateSize( const Vector2& size, RelayoutContainer& container );
892 * @copydoc Dali::Actor::SetResizePolicy()
894 void SetResizePolicy( ResizePolicy::Type policy, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
897 * @copydoc Dali::Actor::GetResizePolicy()
899 ResizePolicy::Type GetResizePolicy( Dimension::Type dimension ) const;
902 * @copydoc Dali::Actor::SetSizeScalePolicy()
904 void SetSizeScalePolicy( SizeScalePolicy::Type policy );
907 * @copydoc Dali::Actor::GetSizeScalePolicy()
909 SizeScalePolicy::Type GetSizeScalePolicy() const;
912 * @copydoc Dali::Actor::SetDimensionDependency()
914 void SetDimensionDependency( Dimension::Type dimension, Dimension::Type dependency );
917 * @copydoc Dali::Actor::GetDimensionDependency()
919 Dimension::Type GetDimensionDependency( Dimension::Type dimension ) const;
922 * @brief Set the size negotiation relayout enabled on this actor
924 * @param[in] relayoutEnabled Boolean to enable or disable relayout
926 void SetRelayoutEnabled( bool relayoutEnabled );
929 * @brief Return if relayout is enabled
931 * @return Return if relayout is enabled or not for this actor
933 bool IsRelayoutEnabled() const;
936 * @brief Mark an actor as having it's layout dirty
938 * @param dirty Whether to mark actor as dirty or not
939 * @param dimension The dimension(s) to mark as dirty
941 void SetLayoutDirty( bool dirty, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
944 * @brief Return if any of an actor's dimensions are marked as dirty
946 * @param dimension The dimension(s) to check
947 * @return Return if any of the requested dimensions are dirty
949 bool IsLayoutDirty( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
952 * @brief Returns if relayout is enabled and the actor is not dirty
954 * @return Return if it is possible to relayout the actor
956 bool RelayoutPossible( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
959 * @brief Returns if relayout is enabled and the actor is dirty
961 * @return Return if it is required to relayout the actor
963 bool RelayoutRequired( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
966 * @brief Request a relayout, which means performing a size negotiation on this actor, its parent and children (and potentially whole scene)
968 * This method is automatically called from OnStageConnection(), OnChildAdd(),
969 * OnChildRemove(), SetSizePolicy(), SetMinimumSize() and SetMaximumSize().
971 * This method can also be called from a derived class every time it needs a different size.
972 * At the end of event processing, the relayout process starts and
973 * all controls which requested Relayout will have their sizes (re)negotiated.
975 * @note RelayoutRequest() can be called multiple times; the size negotiation is still
976 * only performed once, i.e. there is no need to keep track of this in the calling side.
978 void RelayoutRequest( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
981 * @copydoc Dali::Actor::PropagateRelayoutFlags
983 void PropagateRelayoutFlags();
986 * @brief Determine if this actor is dependent on it's parent for relayout
988 * @param dimension The dimension(s) to check for
989 * @return Return if the actor is dependent on it's parent
991 bool RelayoutDependentOnParent( Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
994 * @brief Determine if this actor has another dimension depedent on the specified one
996 * @param dimension The dimension to check for
997 * @param dependentDimension The dimension to check for dependency with
998 * @return Return if the actor is dependent on this dimension
1000 bool RelayoutDependentOnDimension( Dimension::Type dimension, Dimension::Type dependentDimension );
1003 * Negotiate sizes for a control in all dimensions
1005 * @param[in] allocatedSize The size constraint that the control must respect
1007 void NegotiateDimensions( const Vector2& allocatedSize );
1010 * Negotiate size for a specific dimension
1012 * The algorithm adopts a recursive dependency checking approach. Meaning, that wherever dependencies
1013 * are found, e.g. an actor dependent on its parent, the dependency will be calculated first with NegotiatedDimension and
1014 * LayoutDimensionNegotiated flags being filled in on the actor.
1016 * @post All actors that exist in the dependency chain connected to the given actor will have had their NegotiatedDimensions
1017 * calculated and set as well as the LayoutDimensionNegotiated flags.
1019 * @param[in] dimension The dimension to negotiate on
1020 * @param[in] allocatedSize The size constraint that the actor must respect
1022 void NegotiateDimension( Dimension::Type dimension, const Vector2& allocatedSize, ActorDimensionStack& recursionStack );
1025 * @brief Calculate the size of a dimension
1027 * @param[in] dimension The dimension to calculate the size for
1028 * @param[in] maximumSize The upper bounds on the size
1029 * @return Return the calculated size for the dimension
1031 float CalculateSize( Dimension::Type dimension, const Vector2& maximumSize );
1034 * @brief Clamp a dimension given the relayout constraints on this actor
1036 * @param[in] size The size to constrain
1037 * @param[in] dimension The dimension the size exists in
1038 * @return Return the clamped size
1040 float ClampDimension( float size, Dimension::Type dimension );
1043 * Negotiate a dimension based on the size of the parent
1045 * @param[in] dimension The dimension to negotiate on
1046 * @return Return the negotiated size
1048 float NegotiateFromParent( Dimension::Type dimension );
1051 * Negotiate a dimension based on the size of the parent. Fitting inside.
1053 * @param[in] dimension The dimension to negotiate on
1054 * @return Return the negotiated size
1056 float NegotiateFromParentFit( Dimension::Type dimension );
1059 * Negotiate a dimension based on the size of the parent. Flooding the whole space.
1061 * @param[in] dimension The dimension to negotiate on
1062 * @return Return the negotiated size
1064 float NegotiateFromParentFlood( Dimension::Type dimension );
1067 * @brief Negotiate a dimension based on the size of the children
1069 * @param[in] dimension The dimension to negotiate on
1070 * @return Return the negotiated size
1072 float NegotiateFromChildren( Dimension::Type dimension );
1075 * Set the negotiated dimension value for the given dimension(s)
1077 * @param negotiatedDimension The value to set
1078 * @param dimension The dimension(s) to set the value for
1080 void SetNegotiatedDimension( float negotiatedDimension, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1083 * Return the value of negotiated dimension for the given dimension
1085 * @param dimension The dimension to retrieve
1086 * @return Return the value of the negotiated dimension
1088 float GetNegotiatedDimension( Dimension::Type dimension ) const;
1091 * @brief Set the padding for a dimension
1093 * @param[in] padding Padding for the dimension. X = start (e.g. left, bottom), y = end (e.g. right, top)
1094 * @param[in] dimension The dimension to set
1096 void SetPadding( const Vector2& padding, Dimension::Type dimension );
1099 * Return the value of padding for the given dimension
1101 * @param dimension The dimension to retrieve
1102 * @return Return the value of padding for the dimension
1104 Vector2 GetPadding( Dimension::Type dimension ) const;
1107 * Return the actor size for a given dimension
1109 * @param[in] dimension The dimension to retrieve the size for
1110 * @return Return the size for the given dimension
1112 float GetSize( Dimension::Type dimension ) const;
1115 * Return the natural size of the actor for a given dimension
1117 * @param[in] dimension The dimension to retrieve the size for
1118 * @return Return the natural size for the given dimension
1120 float GetNaturalSize( Dimension::Type dimension ) const;
1123 * @brief Return the amount of size allocated for relayout
1125 * May include padding
1127 * @param[in] dimension The dimension to retrieve
1128 * @return Return the size
1130 float GetRelayoutSize( Dimension::Type dimension ) const;
1133 * @brief If the size has been negotiated return that else return normal size
1135 * @param[in] dimension The dimension to retrieve
1136 * @return Return the size
1138 float GetLatestSize( Dimension::Type dimension ) const;
1141 * Apply the negotiated size to the actor
1143 * @param[in] container The container to fill with actors that require further relayout
1145 void SetNegotiatedSize( RelayoutContainer& container );
1148 * @brief Flag the actor as having it's layout dimension negotiated.
1150 * @param[in] negotiated The status of the flag to set.
1151 * @param[in] dimension The dimension to set the flag for
1153 void SetLayoutNegotiated( bool negotiated, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1156 * @brief Test whether the layout dimension for this actor has been negotiated or not.
1158 * @param[in] dimension The dimension to determine the value of the flag for
1159 * @return Return if the layout dimension is negotiated or not.
1161 bool IsLayoutNegotiated( Dimension::Type dimension = Dimension::ALL_DIMENSIONS ) const;
1164 * @brief Calculate the size for a child
1166 * @param[in] child The child actor to calculate the size for
1167 * @param[in] dimension The dimension to calculate the size for. E.g. width or height.
1168 * @return Return the calculated size for the given dimension
1170 float CalculateChildSizeBase( const Dali::Actor& child, Dimension::Type dimension );
1173 * @brief Set the preferred size for size negotiation
1175 * @param[in] size The preferred size to set
1177 void SetPreferredSize( const Vector2& size );
1180 * @brief Return the preferred size used for size negotiation
1182 * @return Return the preferred size
1184 Vector2 GetPreferredSize() const;
1187 * @copydoc Dali::Actor::SetMinimumSize
1189 void SetMinimumSize( float size, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1192 * @copydoc Dali::Actor::GetMinimumSize
1194 float GetMinimumSize( Dimension::Type dimension ) const;
1197 * @copydoc Dali::Actor::SetMaximumSize
1199 void SetMaximumSize( float size, Dimension::Type dimension = Dimension::ALL_DIMENSIONS );
1202 * @copydoc Dali::Actor::GetMaximumSize
1204 float GetMaximumSize( Dimension::Type dimension ) const;
1207 * @copydoc Dali::Actor::AddRenderer()
1209 unsigned int AddRenderer( Renderer& renderer );
1212 * @copydoc Dali::Actor::GetRendererCount()
1214 unsigned int GetRendererCount() const;
1217 * @copydoc Dali::Actor::GetRendererAt()
1219 Renderer& GetRendererAt( unsigned int index );
1222 * @copydoc Dali::Actor::RemoveRenderer()
1224 void RemoveRenderer( Renderer& renderer );
1227 * @copydoc Dali::Actor::RemoveRenderer()
1229 void RemoveRenderer( unsigned int index );
1231 #ifdef DYNAMICS_SUPPORT
1235 /// @copydoc Dali::Actor::DisableDynamics
1236 void DisableDynamics();
1238 /// @copydoc Dali::Actor::EnableDynamics(Dali::DynamicsBodyConfig)
1239 DynamicsBodyPtr EnableDynamics(DynamicsBodyConfigPtr bodyConfig);
1241 /// @copydoc Dali::Actor::GetDynamicsBody
1242 DynamicsBodyPtr GetDynamicsBody() const;
1244 /// @copydoc Dali::Actor::AddDynamicsJoint(Dali::Actor,const Vector3&)
1245 DynamicsJointPtr AddDynamicsJoint( ActorPtr attachedActor, const Vector3& offset );
1247 /// @copydoc Dali::Actor::AddDynamicsJoint(Dali::Actor,const Vector3&,const Vector3&)
1248 DynamicsJointPtr AddDynamicsJoint( ActorPtr attachedActor, const Vector3& offsetA, const Vector3& offsetB );
1250 /// @copydoc Dali::Actor::GetNumberOfJoints
1251 const int GetNumberOfJoints() const;
1253 /// @copydoc Dali::Actor::GetDynamicsJointByIndex
1254 DynamicsJointPtr GetDynamicsJointByIndex( const int index ) const;
1256 /// @copydoc Dali::Actor::GetDynamicsJoint
1257 DynamicsJointPtr GetDynamicsJoint( ActorPtr attachedActor ) const;
1259 /// @copydoc Dali::Actor::RemoveDynamicsJoint
1260 void RemoveDynamicsJoint( DynamicsJointPtr joint );
1263 * Hold a reference to a DynamicsJoint
1264 * @param[in] joint The joint
1266 void ReferenceJoint( DynamicsJointPtr joint );
1269 * Release a reference to a DynamicsJoint
1270 * @param[in] joint The joint
1272 void ReleaseJoint( DynamicsJointPtr joint );
1275 * Set this actor to be the root actor in the dynamics simulation
1276 * All children of the actor are added/removed from the simulation.
1277 * @param[in] flag When true sets this actor to be the simulation world root actor and
1278 * if OnStage() all dynamics enabled child actors are added to the simulation,
1279 * when false stops this actor being the simulation root and if OnStage() all
1280 * dynamics enabled child actors are removed from the simulation.
1282 void SetDynamicsRoot(bool flag);
1286 * Check if this actor is the root actor in the dynamics simulation
1287 * @return true if this is the dynamics root actor.
1289 bool IsDynamicsRoot() const;
1292 * Add actor to the dynamics simulation
1293 * Invoked when the actor is staged, or it's parent becomes the simulation root
1295 void ConnectDynamics();
1298 * Remove actor from the dynamics simulation
1299 * Invoked when the actor is unstaged, or it's parent stops being the the simulation root
1301 void DisconnectDynamics();
1304 * An actor in a DynamicsJoint relationship has been staged
1305 * @param[in] actor The actor passed into AddDynamicsJoint()
1307 void AttachedActorOnStage( Dali::Actor actor );
1310 * An actor in a DynamicsJoint relationship has been unstaged
1311 * @param[in] actor The actor passed into AddDynamicsJoint()
1313 void AttachedActorOffStage( Dali::Actor actor );
1315 #endif // DYNAMICS_SUPPORT
1319 * Converts screen coordinates into the actor's coordinate system.
1320 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1321 * @param[out] localX On return, the X-coordinate relative to the actor.
1322 * @param[out] localY On return, the Y-coordinate relative to the actor.
1323 * @param[in] screenX The screen X-coordinate.
1324 * @param[in] screenY The screen Y-coordinate.
1325 * @return True if the conversion succeeded.
1327 bool ScreenToLocal( float& localX, float& localY, float screenX, float screenY ) const;
1330 * Converts screen coordinates into the actor's coordinate system.
1331 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1332 * @param[in] renderTask The render-task used to display the actor.
1333 * @param[out] localX On return, the X-coordinate relative to the actor.
1334 * @param[out] localY On return, the Y-coordinate relative to the actor.
1335 * @param[in] screenX The screen X-coordinate.
1336 * @param[in] screenY The screen Y-coordinate.
1337 * @return True if the conversion succeeded.
1339 bool ScreenToLocal( RenderTask& renderTask, float& localX, float& localY, float screenX, float screenY ) const;
1342 * Converts from the actor's coordinate system to screen coordinates.
1343 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1344 * @param[in] viewMatrix The view-matrix
1345 * @param[in] projectionMatrix The projection-matrix
1346 * @param[in] viewport The view-port
1347 * @param[out] localX On return, the X-coordinate relative to the actor.
1348 * @param[out] localY On return, the Y-coordinate relative to the actor.
1349 * @param[in] screenX The screen X-coordinate.
1350 * @param[in] screenY The screen Y-coordinate.
1351 * @return True if the conversion succeeded.
1353 bool ScreenToLocal( const Matrix& viewMatrix,
1354 const Matrix& projectionMatrix,
1355 const Viewport& viewport,
1359 float screenY ) const;
1362 * Performs a ray-sphere test with the given pick-ray and the actor's bounding sphere.
1363 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1364 * @param[in] rayOrigin The ray origin in the world's reference system.
1365 * @param[in] rayDir The ray director vector in the world's reference system.
1366 * @return True if the ray intersects the actor's bounding sphere.
1368 bool RaySphereTest( const Vector4& rayOrigin, const Vector4& rayDir ) const;
1371 * Performs a ray-actor test with the given pick-ray and the actor's geometry.
1372 * @note The actor coordinates are relative to the top-left (0.0, 0.0, 0.5)
1373 * @param[in] rayOrigin The ray origin in the world's reference system.
1374 * @param[in] rayDir The ray director vector in the world's reference system.
1375 * @param[out] hitPointLocal The hit point in the Actor's local reference system.
1376 * @param[out] distance The distance from the hit point to the camera.
1377 * @return True if the ray intersects the actor's geometry.
1379 bool RayActorTest( const Vector4& rayOrigin,
1380 const Vector4& rayDir,
1381 Vector4& hitPointLocal,
1382 float& distance ) const;
1385 * Sets whether the actor should receive a notification when touch or hover motion events leave
1386 * the boundary of the actor.
1388 * @note By default, this is set to false as most actors do not require this.
1389 * @note Need to connect to the SignalTouch or SignalHover to actually receive this event.
1391 * @param[in] required Should be set to true if a Leave event is required
1393 void SetLeaveRequired( bool required );
1396 * This returns whether the actor requires touch or hover events whenever touch or hover motion events leave
1397 * the boundary of the actor.
1398 * @return true if a Leave event is required, false otherwise.
1400 bool GetLeaveRequired() const;
1403 * @copydoc Dali::Actor::SetKeyboardFocusable()
1405 void SetKeyboardFocusable( bool focusable );
1408 * @copydoc Dali::Actor::IsKeyboardFocusable()
1410 bool IsKeyboardFocusable() const;
1413 * Query whether the application or derived actor type requires touch events.
1414 * @return True if touch events are required.
1416 bool GetTouchRequired() const;
1419 * Query whether the application or derived actor type requires hover events.
1420 * @return True if hover events are required.
1422 bool GetHoverRequired() const;
1425 * Query whether the application or derived actor type requires mouse wheel events.
1426 * @return True if mouse wheel events are required.
1428 bool GetMouseWheelEventRequired() const;
1431 * Query whether the actor is actually hittable. This method checks whether the actor is
1432 * sensitive, has the visibility flag set to true and is not fully transparent.
1433 * @return true, if it can be hit, false otherwise.
1435 bool IsHittable() const;
1440 * Retrieve the gesture data associated with this actor. The first call to this method will
1441 * allocate space for the ActorGestureData so this should only be called if an actor really does
1443 * @return Reference to the ActorGestureData for this actor.
1444 * @note Once the gesture-data is created for an actor it is likely that gestures are required
1445 * throughout the actor's lifetime so it will only be deleted when the actor is destroyed.
1447 ActorGestureData& GetGestureData();
1450 * Queries whether the actor requires the gesture type.
1451 * @param[in] type The gesture type.
1453 bool IsGestureRequred( Gesture::Type type ) const;
1458 * Used by the EventProcessor to emit touch event signals.
1459 * @param[in] event The touch event.
1460 * @return True if the event was consumed.
1462 bool EmitTouchEventSignal( const TouchEvent& event );
1465 * Used by the EventProcessor to emit hover event signals.
1466 * @param[in] event The hover event.
1467 * @return True if the event was consumed.
1469 bool EmitHoverEventSignal( const HoverEvent& event );
1472 * Used by the EventProcessor to emit mouse wheel event signals.
1473 * @param[in] event The mouse wheel event.
1474 * @return True if the event was consumed.
1476 bool EmitMouseWheelEventSignal( const MouseWheelEvent& event );
1479 * @copydoc Dali::Actor::TouchedSignal()
1481 Dali::Actor::TouchSignalType& TouchedSignal();
1484 * @copydoc Dali::Actor::HoveredSignal()
1486 Dali::Actor::HoverSignalType& HoveredSignal();
1489 * @copydoc Dali::Actor::MouseWheelEventSignal()
1491 Dali::Actor::MouseWheelEventSignalType& MouseWheelEventSignal();
1494 * @copydoc Dali::Actor::OnStageSignal()
1496 Dali::Actor::OnStageSignalType& OnStageSignal();
1499 * @copydoc Dali::Actor::OffStageSignal()
1501 Dali::Actor::OffStageSignalType& OffStageSignal();
1504 * @copydoc Dali::Actor::OnRelayoutSignal()
1506 Dali::Actor::OnRelayoutSignalType& OnRelayoutSignal();
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 std::vector< Property::Value >& attributes );
1537 * This should only be called by Animation, when the actor is resized using Animation::Resize().
1539 * @param[in] animation The animation that resized the actor
1540 * @param[in] targetSize The new target size of the actor
1542 void NotifySizeAnimation( Animation& animation, const Vector3& targetSize );
1545 * For use in derived classes.
1546 * This should only be called by Animation, when the actor is resized using Animation::Resize().
1548 virtual void OnSizeAnimation( Animation& animation, const Vector3& targetSize )
1556 BASIC, RENDERABLE, LAYER, ROOT_LAYER
1560 * Protected Constructor. See Actor::New().
1561 * The second-phase construction Initialize() member should be called immediately after this.
1562 * @param[in] derivedType The derived type of actor (if any).
1564 Actor( DerivedType derivedType );
1567 * Second-phase constructor. Must be called immediately after creating a new Actor;
1569 void Initialize( void );
1572 * A reference counted object may only be deleted by calling Unreference()
1577 * Called on a child during Add() when the parent actor is connected to the Stage.
1578 * @param[in] stage The stage.
1579 * @param[in] index If set, it is only used for positioning the actor within the parent's child list.
1581 void ConnectToStage( int index = -1 );
1584 * Helper for ConnectToStage, to recursively connect a tree of actors.
1585 * This is atomic i.e. not interrupted by user callbacks.
1586 * @param[in] index If set, it is only used for positioning the actor within the parent's child list.
1587 * @param[out] connectionList On return, the list of connected actors which require notification.
1589 void RecursiveConnectToStage( ActorContainer& connectionList, int index = -1 );
1592 * Connect the Node associated with this Actor to the scene-graph.
1593 * @param[in] index If set, it is only used for positioning the actor within the parent's child list.
1595 void ConnectToSceneGraph( int index = -1 );
1598 * Helper for ConnectToStage, to notify a connected actor through the public API.
1600 void NotifyStageConnection();
1603 * Called on a child during Remove() when the actor was previously on the Stage.
1605 void DisconnectFromStage();
1608 * Helper for DisconnectFromStage, to recursively disconnect a tree of actors.
1609 * This is atomic i.e. not interrupted by user callbacks.
1610 * @param[out] disconnectionList On return, the list of disconnected actors which require notification.
1612 void RecursiveDisconnectFromStage( ActorContainer& disconnectionList );
1615 * Disconnect the Node associated with this Actor from the scene-graph.
1617 void DisconnectFromSceneGraph();
1620 * Helper for DisconnectFromStage, to notify a disconnected actor through the public API.
1622 void NotifyStageDisconnection();
1625 * When the Actor is OnStage, checks whether the corresponding Node is connected to the scene graph.
1626 * @return True if the Actor is OnStage & has a Node connected to the scene graph.
1628 bool IsNodeConnected() const;
1631 * Calculate the size of the z dimension for a 2D size
1633 * @param[in] size The 2D size (X, Y) to calculate Z from
1635 * @return Return the Z dimension for this size
1637 float CalculateSizeZ( const Vector2& size ) const;
1640 // Default property extensions from Object
1643 * @copydoc Dali::Internal::Object::GetDefaultPropertyCount()
1645 virtual unsigned int GetDefaultPropertyCount() const;
1648 * @copydoc Dali::Internal::Object::GetDefaultPropertyIndices()
1650 virtual void GetDefaultPropertyIndices( Property::IndexContainer& indices ) const;
1653 * @copydoc Dali::Internal::Object::GetDefaultPropertyName()
1655 virtual const char* GetDefaultPropertyName( Property::Index index ) const;
1658 * @copydoc Dali::Internal::Object::GetDefaultPropertyIndex()
1660 virtual Property::Index GetDefaultPropertyIndex( const std::string& name ) const;
1663 * @copydoc Dali::Internal::Object::IsDefaultPropertyWritable()
1665 virtual bool IsDefaultPropertyWritable( Property::Index index ) const;
1668 * @copydoc Dali::Internal::Object::IsDefaultPropertyAnimatable()
1670 virtual bool IsDefaultPropertyAnimatable( Property::Index index ) const;
1673 * @copydoc Dali::Internal::Object::IsDefaultPropertyAConstraintInput()
1675 virtual bool IsDefaultPropertyAConstraintInput( Property::Index index ) const;
1678 * @copydoc Dali::Internal::Object::GetDefaultPropertyType()
1680 virtual Property::Type GetDefaultPropertyType( Property::Index index ) const;
1683 * @copydoc Dali::Internal::Object::SetDefaultProperty()
1685 virtual void SetDefaultProperty( Property::Index index, const Property::Value& propertyValue );
1688 * @copydoc Dali::Internal::Object::SetSceneGraphProperty()
1690 virtual void SetSceneGraphProperty( Property::Index index, const PropertyMetadata& entry, const Property::Value& value );
1693 * @copydoc Dali::Internal::Object::GetDefaultProperty()
1695 virtual Property::Value GetDefaultProperty( Property::Index index ) const;
1698 * @copydoc Dali::Internal::Object::GetPropertyOwner()
1700 virtual const SceneGraph::PropertyOwner* GetPropertyOwner() const;
1703 * @copydoc Dali::Internal::Object::GetSceneObject()
1705 virtual const SceneGraph::PropertyOwner* GetSceneObject() const;
1708 * @copydoc Dali::Internal::Object::GetSceneObjectAnimatableProperty()
1710 virtual const SceneGraph::PropertyBase* GetSceneObjectAnimatableProperty( Property::Index index ) const;
1713 * @copydoc Dali::Internal::Object::GetSceneObjectInputProperty()
1715 virtual const PropertyInputImpl* GetSceneObjectInputProperty( Property::Index index ) const;
1718 * @copydoc Dali::Internal::Object::GetPropertyComponentIndex()
1720 virtual int GetPropertyComponentIndex( Property::Index index ) const;
1728 Actor( const Actor& );
1731 Actor& operator=( const Actor& rhs );
1734 * Set the actors parent.
1735 * @param[in] parent The new parent.
1736 * @param[in] index If set, it is only used for positioning the actor within the parent's child list.
1738 void SetParent( Actor* parent, int index = -1 );
1741 * Helper to create a Node for this Actor.
1742 * To be overriden in derived classes.
1743 * @return A newly allocated node.
1745 virtual SceneGraph::Node* CreateNode() const;
1748 * For use in derived classes, called after Initialize()
1750 virtual void OnInitialize()
1755 * For use in internal derived classes.
1756 * This is called during ConnectToStage(), after the actor has finished adding its node to the scene-graph.
1757 * The derived class must not modify the actor hierachy (Add/Remove children) during this callback.
1759 virtual void OnStageConnectionInternal()
1764 * For use in internal derived classes.
1765 * This is called during DisconnectFromStage(), before the actor removes its node from the scene-graph.
1766 * The derived class must not modify the actor hierachy (Add/Remove children) during this callback.
1768 virtual void OnStageDisconnectionInternal()
1773 * For use in external (CustomActor) derived classes.
1774 * This is called after the atomic ConnectToStage() traversal has been completed.
1776 virtual void OnStageConnectionExternal()
1781 * For use in external (CustomActor) derived classes.
1782 * This is called after the atomic DisconnectFromStage() traversal has been completed.
1784 virtual void OnStageDisconnectionExternal()
1789 * For use in derived classes; this is called after Add() has added a child.
1790 * @param[in] child The child that was added.
1792 virtual void OnChildAdd( Actor& child )
1797 * For use in derived classes; this is called after Remove() has removed a child.
1798 * @param[in] child The child that was removed.
1800 virtual void OnChildRemove( Actor& child )
1805 * For use in derived classes.
1806 * This is called after SizeSet() has been called.
1808 virtual void OnSizeSet( const Vector3& targetSize )
1813 * For use in derived classes.
1814 * This is only called if mDerivedRequiresTouch is true, and the touch-signal was not consumed.
1815 * @param[in] event The touch event.
1816 * @return True if the event should be consumed.
1818 virtual bool OnTouchEvent( const TouchEvent& event )
1824 * For use in derived classes.
1825 * This is only called if mDerivedRequiresHover is true, and the hover-signal was not consumed.
1826 * @param[in] event The hover event.
1827 * @return True if the event should be consumed.
1829 virtual bool OnHoverEvent( const HoverEvent& event )
1835 * For use in derived classes.
1836 * This is only called if the mouse wheel signal was not consumed.
1837 * @param[in] event The mouse event.
1838 * @return True if the event should be consumed.
1840 virtual bool OnMouseWheelEvent( const MouseWheelEvent& event )
1846 * @brief Ensure the relayout data is allocated
1848 void EnsureRelayoutData() const;
1851 * @brief Apply the size set policy to the input size
1853 * @param[in] size The size to apply the policy to
1854 * @return Return the adjusted size
1856 Vector2 ApplySizeSetPolicy( const Vector2 size );
1860 StagePtr mStage; ///< Used to send messages to Node; valid until Core destruction
1861 Actor* mParent; ///< Each actor (except the root) can have one parent
1862 ActorContainer* mChildren; ///< Container of referenced actors
1863 const SceneGraph::Node* mNode; ///< Not owned
1864 Vector3* mParentOrigin; ///< NULL means ParentOrigin::DEFAULT. ParentOrigin is non-animatable
1865 Vector3* mAnchorPoint; ///< NULL means AnchorPoint::DEFAULT. AnchorPoint is non-animatable
1867 struct RelayoutData;
1868 mutable RelayoutData* mRelayoutData; ///< Struct to hold optional collection of relayout variables
1870 #ifdef DYNAMICS_SUPPORT
1871 DynamicsData* mDynamicsData; ///< optional physics data
1874 ActorGestureData* mGestureData; ///< Optional Gesture data. Only created when actor requires gestures
1876 ActorAttachmentPtr mAttachment; ///< Optional referenced attachment
1879 Dali::Actor::TouchSignalType mTouchedSignal;
1880 Dali::Actor::HoverSignalType mHoveredSignal;
1881 Dali::Actor::MouseWheelEventSignalType mMouseWheelEventSignal;
1882 Dali::Actor::OnStageSignalType mOnStageSignal;
1883 Dali::Actor::OffStageSignalType mOffStageSignal;
1884 Dali::Actor::OnRelayoutSignalType mOnRelayoutSignal;
1886 Vector3 mTargetSize; ///< Event-side storage for size (not a pointer as most actors will have a size)
1887 Vector3 mTargetPosition; ///< Event-side storage for position (not a pointer as most actors will have a position)
1889 std::string mName; ///< Name of the actor
1890 unsigned int mId; ///< A unique ID to identify the actor starting from 1, and 0 is reserved
1892 const bool mIsRoot : 1; ///< Flag to identify the root actor
1893 const bool mIsRenderable : 1; ///< Flag to identify that this is a renderable actor
1894 const bool mIsLayer : 1; ///< Flag to identify that this is a layer
1895 bool mIsOnStage : 1; ///< Flag to identify whether the actor is on-stage
1896 bool mIsDynamicsRoot : 1; ///< Flag to identify if this is the dynamics world root
1897 bool mSensitive : 1; ///< Whether the actor emits touch event signals
1898 bool mLeaveRequired : 1; ///< Whether a touch event signal is emitted when the a touch leaves the actor's bounds
1899 bool mKeyboardFocusable : 1; ///< Whether the actor should be focusable by keyboard navigation
1900 bool mDerivedRequiresTouch : 1; ///< Whether the derived actor type requires touch event signals
1901 bool mDerivedRequiresHover : 1; ///< Whether the derived actor type requires hover event signals
1902 bool mDerivedRequiresMouseWheelEvent : 1; ///< Whether the derived actor type requires mouse wheel event signals
1903 bool mOnStageSignalled : 1; ///< Set to true before OnStageConnection signal is emitted, and false before OnStageDisconnection
1904 bool mInheritOrientation : 1; ///< Cached: Whether the parent's orientation should be inherited.
1905 bool mInheritScale : 1; ///< Cached: Whether the parent's scale should be inherited.
1906 DrawMode::Type mDrawMode : 2; ///< Cached: How the actor and its children should be drawn
1907 PositionInheritanceMode mPositionInheritanceMode : 2; ///< Cached: Determines how position is inherited
1908 ColorMode mColorMode : 2; ///< Cached: Determines whether mWorldColor is inherited
1912 static ActorContainer mNullChildren; ///< Empty container (shared by all actors, returned by GetChildren() const)
1913 static unsigned int mActorCounter; ///< A counter to track the actor instance creation
1917 } // namespace Internal
1919 // Helpers for public-api forwarding methods
1921 inline Internal::Actor& GetImplementation( Dali::Actor& actor )
1923 DALI_ASSERT_ALWAYS( actor && "Actor handle is empty" );
1925 BaseObject& handle = actor.GetBaseObject();
1927 return static_cast< Internal::Actor& >( handle );
1930 inline const Internal::Actor& GetImplementation( const Dali::Actor& actor )
1932 DALI_ASSERT_ALWAYS( actor && "Actor handle is empty" );
1934 const BaseObject& handle = actor.GetBaseObject();
1936 return static_cast< const Internal::Actor& >( handle );
1941 #endif // __DALI_INTERNAL_ACTOR_H__