1 #ifndef __DALI_INTERNAL_OBJECT_H__
2 #define __DALI_INTERNAL_OBJECT_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.
22 #include <dali/public-api/animation/active-constraint.h>
23 #include <dali/public-api/animation/constraint.h>
24 #include <dali/public-api/common/dali-vector.h>
25 #include <dali/public-api/common/vector-wrapper.h>
26 #include <dali/public-api/object/base-object.h>
27 #include <dali/public-api/object/handle.h>
28 #include <dali/public-api/object/property.h>
29 #include <dali/public-api/object/property-input.h>
30 #include <dali/public-api/object/property-notification.h>
31 #include <dali/internal/common/owner-container.h>
32 #include <dali/internal/event/common/event-thread-services.h>
33 #include <dali/internal/event/common/property-input-impl.h>
34 #include <dali/internal/event/common/property-metadata.h>
35 #include <dali/internal/update/common/property-base.h>
40 class PropertyNotification;
45 class EventThreadServices;
47 class PropertyCondition;
48 class PropertyInputImpl;
58 typedef std::vector< Dali::ActiveConstraint > ActiveConstraintContainer;
59 typedef ActiveConstraintContainer::iterator ActiveConstraintIter;
60 typedef ActiveConstraintContainer::const_iterator ActiveConstraintConstIter;
64 * A base class for objects which optionally provide properties.
65 * The concrete derived class is responsible for implementing the property system methods.
66 * Classes may derive from Dali::BaseObject, until any properties are required.
68 * An object for a property-owning object in the scene-graph.
69 * This provides an interface for observing the addition/removal of scene-objects.
71 * The concrete derived class is responsible for:
72 * 1) Adding & removing an object from the scene-graph. The OnSceneObjectAdd() and OnSceneObjectRemove()
73 * methods should be called by the derived class, to trigger observer callbacks.
74 * 3) Implementing the GetSceneObject() methods, used to access the scene-object.
75 * 4) Providing access to properties stored by the scene-graph object. These should match the properties
76 * reported by the base Dali::Internal::Object methods.
79 class Object : public Dali::BaseObject
83 typedef Dali::Handle::Capability Capability;
90 * Called immediately after the object has created & passed ownership of a scene-graph object.
91 * @param[in] object The object object.
93 virtual void SceneObjectAdded(Object& object) = 0;
96 * Called shortly before the object sends a message to remove its scene object.
97 * @param[in] object The object object.
99 virtual void SceneObjectRemoved(Object& object) = 0;
102 * Called shortly before the object itself is destroyed; no further callbacks will be received.
103 * @param[in] object The object object.
105 virtual void ObjectDestroyed(Object& object) = 0;
112 virtual ~Observer(){}
121 * Add an observer to the object.
122 * @param[in] observer The observer to add.
124 virtual void AddObserver( Observer& observer );
127 * Remove an observer from the object
128 * @pre The observer has already been added.
129 * @param[in] observer The observer to remove.
131 virtual void RemoveObserver( Observer& observer );
134 * @copydoc Dali::Handle::Supports()
136 virtual bool Supports( Capability capability ) const;
139 * @copydoc Dali::Handle::GetPropertyCount()
141 virtual unsigned int GetPropertyCount() const;
144 * @copydoc Dali::Handle::GetPropertyName()
146 virtual std::string GetPropertyName( Property::Index index ) const;
149 * @copydoc Dali::Handle::GetPropertyIndex()
151 virtual Property::Index GetPropertyIndex( const std::string& name ) const;
154 * @copydoc Dali::Handle::IsPropertyWritable()
156 virtual bool IsPropertyWritable( Property::Index index ) const;
159 * @copydoc Dali::Handle::IsPropertyAnimatable()
161 virtual bool IsPropertyAnimatable( Property::Index index ) const;
164 * @copydoc Dali::Handle::IsPropertyAConstraintInput()
166 virtual bool IsPropertyAConstraintInput( Property::Index index ) const;
169 * @copydoc Dali::Handle::GetPropertyType()
171 virtual Property::Type GetPropertyType( Property::Index index ) const;
174 * @copydoc Dali::Handle::SetProperty()
176 virtual void SetProperty( Property::Index index, const Property::Value& propertyValue );
179 * @copydoc Dali::Handle::GetProperty()
181 virtual Property::Value GetProperty( Property::Index index ) const;
184 * @copydoc Dali::Handle::GetPropertyIndices()
186 virtual void GetPropertyIndices( Property::IndexContainer& indices ) const;
189 * @copydoc Dali::Handle::RegisterProperty()
191 virtual Property::Index RegisterProperty( const std::string& name, const Property::Value& propertyValue );
194 * @copydoc Dali::Handle::RegisterProperty(std::string name, Property::Value propertyValue, Property::AccessMode accessMode)
196 virtual Property::Index RegisterProperty( const std::string& name, const Property::Value& propertyValue, Property::AccessMode accessMode );
199 * @copydoc Dali::Handle::AddPropertyNotification()
201 virtual Dali::PropertyNotification AddPropertyNotification( Property::Index index,
203 const Dali::PropertyCondition& condition );
206 * @copydoc Dali::Handle::RemovePropertyNotification()
208 virtual void RemovePropertyNotification( Dali::PropertyNotification propertyNotification );
211 * @copydoc Dali::Handle::RemovePropertyNotifications()
213 virtual void RemovePropertyNotifications();
215 /******************************** Uniform Mappings ********************************/
218 * @copydoc Dali::Handle::AddUniformMapping()
220 void AddUniformMapping( Property::Index propertyIndex, const std::string& uniformName );
223 * @copydoc Dali::Handle::RemoveUniformMapping( )
225 void RemoveUniformMapping( const std::string& uniformName );
227 /******************************** Constraints ********************************/
230 * Apply a constraint to a Object.
231 * @param[in] constraint The constraint to apply.
233 Dali::ActiveConstraint ApplyConstraint( Constraint& constraint );
236 * Apply a constraint to a Object.
237 * @param[in] constraint The constraint to apply.
238 * @param[in] weightObject An object with a "weight" float property.
240 Dali::ActiveConstraint ApplyConstraint( Constraint& constraint, Dali::Handle weightObject );
243 * Remove one constraint from a Object.
244 * @param[in] activeConstraint The active constraint to remove.
246 void RemoveConstraint( Dali::ActiveConstraint activeConstraint );
249 * Remove all constraints from a Object.
251 void RemoveConstraints();
254 * Remove all constraints from a Object with a matching tag
256 void RemoveConstraints( unsigned int tag );
259 * Called by TypeInfo to set the type-info that this object-impl is created by.
260 * @param[in] typeInfo The TypeInfo that creates this object-impl.
262 void SetTypeInfo( const TypeInfo* typeInfo );
265 * @return the index from which custom properties start
267 unsigned int CustomPropertyStartIndex()
269 return PROPERTY_CUSTOM_START_INDEX;
272 /******************** To be overridden by deriving classes ********************/
275 * Retrieve the scene-graph object added by this object.
276 * @return A pointer to the object, or NULL if no object has been added to the scene-graph.
278 virtual const SceneGraph::PropertyOwner* GetSceneObject() const = 0;
281 * Retrieve an animatable property owned by the scene-graph object.
282 * @pre -1 < index < GetPropertyCount().
283 * @param[in] index The index of the property.
284 * @return A dereferenceable pointer to a property, or NULL if a scene-object does not exist with this property.
286 virtual const SceneGraph::PropertyBase* GetSceneObjectAnimatableProperty( Property::Index index ) const = 0;
289 * Retrieve a constraint input-property owned by the scene-graph object.
290 * @pre -1 < index < GetPropertyCount().
291 * @param[in] index The index of the property.
292 * @return A dereferenceable pointer to an input property, or NULL if a scene-object does not exist with this property.
294 virtual const PropertyInputImpl* GetSceneObjectInputProperty( Property::Index index ) const = 0;
297 * Query whether the property is a component of a scene-graph property.
298 * @pre -1 < index < GetPropertyCount().
299 * @param[in] index The index of the property.
300 * @return The index or Property::INVALID_COMPONENT_INDEX.
302 virtual int GetPropertyComponentIndex( Property::Index index ) const;
307 * A reference counted object may only be deleted by calling Unreference()
312 * Called immediately by derived classes, after the scene-object has been created & passed to the scene-graph.
314 void OnSceneObjectAdd();
317 * Called by derived classes, shortly before send a message to remove the scene-object.
319 void OnSceneObjectRemove();
322 * For use in derived classes.
323 * This is called after a non animatable custom property is set.
324 * @param [in] index The index of the property.
325 * @param [in] propertyValue The value of the property.
327 virtual void OnPropertySet( Property::Index index, Property::Value propertyValue ) {}
330 * Retrieves the TypeInfo for this object. Only retrieves it from the type-registry once and then stores a pointer
331 * to it locally there-after. The type info will not change during the life-time of the application.
332 * @return The type-info for this object (Can be NULL)
334 const TypeInfo* GetTypeInfo() const;
337 * Helper to find custom property
339 * @return pointer to the property
341 CustomPropertyMetadata* FindCustomProperty( Property::Index index ) const;
344 * Helper to find animatable property
346 * @return pointer to the property
348 AnimatablePropertyMetadata* FindAnimatableProperty( Property::Index index ) const;
350 private: // Default property extensions for derived classes
353 * Query how many default properties the derived class supports.
354 * @return The number of default properties.
356 virtual unsigned int GetDefaultPropertyCount() const = 0;
359 * Retrieve all the indices that are associated with the default properties supported by the derived class.
360 * @return A container of default property indices.
361 * @note The deriving class must not modify the existing elements in the container.
363 virtual void GetDefaultPropertyIndices( Property::IndexContainer& indices ) const = 0;
366 * Query how many default properties the derived class supports.
367 * @return The number of default properties.
369 virtual const char* GetDefaultPropertyName( Property::Index index ) const = 0;
372 * Query the index of a default property.
373 * @param [in] name The name of the property.
374 * @return The index of the property, or Property::INVALID_INDEX if no default property exists with the given name.
376 virtual Property::Index GetDefaultPropertyIndex( const std::string& name ) const = 0;
379 * Query whether a default property is writable.
380 * @param [in] index The index of the property.
381 * @return True if the property is animatable.
383 virtual bool IsDefaultPropertyWritable( Property::Index index ) const = 0;
386 * Query whether a default property is animatable.
387 * This determines whether the property can be the target of an animation or constraint.
388 * @param [in] index The index of the property.
389 * @return True if the property is animatable.
391 virtual bool IsDefaultPropertyAnimatable( Property::Index index ) const = 0;
394 * @brief Query whether a default property can be used as an input to a constraint.
396 * @param [in] index The index of the property.
397 * @return True if the property can be used as an input to a constraint.
399 virtual bool IsDefaultPropertyAConstraintInput( Property::Index index ) const = 0;
402 * Query the type of a default property.
403 * @param [in] index The index of the property.
404 * @return The type of the property.
406 virtual Property::Type GetDefaultPropertyType( Property::Index index ) const = 0;
409 * Set the value of a default property.
410 * @pre The property types match i.e. propertyValue.GetType() is equal to GetPropertyType(index).
411 * @param [in] index The index of the property.
412 * @param [in] propertyValue The new value of the property.
414 virtual void SetDefaultProperty( Property::Index index, const Property::Value& propertyValue ) = 0;
417 * Retrieve a default property value.
418 * @param [in] index The index of the property.
419 * @return The property value.
421 virtual Property::Value GetDefaultProperty( Property::Index index ) const = 0;
424 * @todo this is virtual so that for now actor can override it,
425 * it needs to be removed and only have GetSceneObject but that requires changing actor and constraint logic
426 * Retrieve the scene-graph object added by this object.
427 * @return A pointer to the object, or NULL if no object has been added to the scene-graph.
429 virtual const SceneGraph::PropertyOwner* GetPropertyOwner() const
431 return GetSceneObject();
435 * Notify derived class of installation of a new scene-object property.
436 * This method is called after the message is to sent to install the property
437 * @param [in] newProperty A newly allocated scene-object property. Ownership is obviously not passed.
438 * @param [in] name The name allocated to this custom property.
439 * @param [in] index The index allocated to this custom property.
441 virtual void NotifyScenePropertyInstalled( const SceneGraph::PropertyBase& newProperty, const std::string& name, unsigned int index ) const
447 Object(const Object& rhs);
450 Object& operator=(const Object& rhs);
453 * Enable property notifications in scene graph
455 void EnablePropertyNotifications();
458 * Enable property notifications in scene graph
460 void DisablePropertyNotifications();
463 * Helper for ApplyConstraint overloads.
464 * @param[in] constraint The constraint to apply.
465 * @param[in] weightObject An object with a "weight" float property, or an empty handle.
466 * @return The new active-constraint which is owned by Object.
468 ActiveConstraintBase* DoApplyConstraint( Constraint& constraint, Dali::Handle weightObject );
471 * Helper to remove active constraints
473 void RemoveConstraint( ActiveConstraint& constraint, bool isInScenegraph );
476 * Get the value of the property.
477 * @param [in] entry An entry from the property lookup container.
478 * @return The new value of the property.
480 Property::Value GetPropertyValue( const PropertyMetadata* entry ) const;
483 * Set the value of scene graph property.
484 * @param [in] index The index of the property.
485 * @param [in] entry An entry from the property lookup container.
486 * @param [in] value The new value of the property.
488 virtual void SetSceneGraphProperty( Property::Index index, const PropertyMetadata& entry, const Property::Value& value );
491 * Helper to register a scene-graph property
492 * @param [in] name The name of the property.
493 * @param [in] index The index of the property
494 * @param [in] value The value of the property.
495 * @return The index of the registered property or Property::INVALID_INDEX if registration failed.
497 Property::Index RegisterSceneGraphProperty(const std::string& name, Property::Index index, const Property::Value& propertyValue) const;
501 * Get the event thread services object - used for sending messages to the scene graph
502 * Assert if called from the wrong thread.
503 * This is intentionally inline for performance reasons.
505 * @return The event thread services object
507 inline EventThreadServices& GetEventThreadServices()
509 DALI_ASSERT_DEBUG( EventThreadServices::IsCoreRunning() );
510 return mEventThreadServices;
514 * Get the event thread services object - used for sending messages to the scene graph
515 * Assert if called from the wrong thread
516 * This is intentionally inline for performance reasons.
518 * @return The event thread services object
520 inline const EventThreadServices& GetEventThreadServices() const
522 DALI_ASSERT_DEBUG( EventThreadServices::IsCoreRunning() );
523 return mEventThreadServices;
527 EventThreadServices& mEventThreadServices;
531 typedef OwnerContainer<PropertyMetadata*> PropertyMetadataLookup;
532 mutable PropertyMetadataLookup mCustomProperties; ///< Used for accessing custom Node properties
533 mutable PropertyMetadataLookup mAnimatableProperties; ///< Used for accessing animatable Node properties
534 mutable TypeInfo const * mTypeInfo; ///< The type-info for this object, mutable so it can be lazy initialized from const method if it is required
536 Dali::Vector<Observer*> mObservers;
538 ActiveConstraintContainer* mConstraints; ///< Container of owned active-constraints.
540 typedef std::vector< Dali::PropertyNotification > PropertyNotificationContainer;
541 typedef PropertyNotificationContainer::iterator PropertyNotificationContainerIter;
542 typedef PropertyNotificationContainer::const_iterator PropertyNotificationContainerConstIter;
543 PropertyNotificationContainer* mPropertyNotifications; ///< Container of owned property notifications.
545 } // namespace Internal
547 // Helpers for public-api forwarding methods
549 inline Internal::Object& GetImplementation(Dali::Handle& object)
551 DALI_ASSERT_ALWAYS( object && "Object handle is empty" );
553 BaseObject& handle = object.GetBaseObject();
555 return static_cast<Internal::Object&>(handle);
558 inline const Internal::Object& GetImplementation(const Dali::Handle& object)
560 DALI_ASSERT_ALWAYS( object && "Object handle is empty" );
562 const BaseObject& handle = object.GetBaseObject();
564 return static_cast<const Internal::Object&>(handle);
569 #endif // __DALI_INTERNAL_OBJECT_H__