1 #ifndef DALI_INTERNAL_SCENE_GRAPH_PROPERTY_OWNER_H
2 #define DALI_INTERNAL_SCENE_GRAPH_PROPERTY_OWNER_H
5 * Copyright (c) 2022 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/devel-api/common/owner-container.h>
23 #include <dali/internal/common/const-string.h>
24 #include <dali/internal/common/message.h>
25 #include <dali/internal/update/animation/scene-graph-constraint-declarations.h>
26 #include <dali/internal/update/common/property-base.h>
27 #include <dali/internal/update/common/scene-graph-buffers.h>
28 #include <dali/internal/update/common/uniform-map.h>
29 #include <dali/public-api/common/dali-vector.h>
39 using OwnedPropertyContainer = OwnerContainer<PropertyBase*>;
40 using OwnedPropertyIter = OwnedPropertyContainer::Iterator;
43 * An update-thread object which own properties.
44 * This allows observers to track the lifetime of the object & its properties.
53 * Called when the observable object is connected to the scene graph.
54 * @param[in] owner A reference to the connected PropertyOwner
56 virtual void PropertyOwnerConnected(PropertyOwner& owner) = 0;
59 * Called when the observable object is disconnected from the scene graph.
60 * @param[in] currentBufferIndex The buffer to reset.
61 * @param[in] owner A reference to the disconnected PropertyOwner
63 virtual void PropertyOwnerDisconnected(BufferIndex updateBufferIndex, PropertyOwner& owner) = 0;
66 * Called shortly before the observable object is destroyed.
68 * @note Cleanup should be done in both this and PropertyOwnerDisconnected as PropertyOwnerDisconnected
69 * may not be called (i.e. when shutting down).
71 virtual void PropertyOwnerDestroyed(PropertyOwner& owner) = 0;
75 * Virtual destructor, no deletion through this interface
77 virtual ~Observer() = default;
81 * Create a property owner.
82 * @return A newly allocated object.
84 static PropertyOwner* New();
87 * Virtual destructor; this is intended as a base class.
89 virtual ~PropertyOwner();
93 * The observer is responsible for calling RemoveObserver(*this) during its own destruction.
94 * Connecting an actor-side object as an observer is not allowed, due to thread-safety issues.
95 * @param[in] observer The observer.
97 void AddObserver(Observer& observer);
100 * Remove an observer.
101 * @param[in] observer The observer.
103 void RemoveObserver(Observer& observer);
106 * This method can be used to determine if there is an animation or
107 * constraint that is using this property owner.
108 * @return true if there are observers.
113 * Called just before destruction to disconnect all observers and remove constraints.
114 * This occurs when the object is in the process of being destroyed.
119 * Notify all observers that the object has been connected
120 * This occurs when the object is connected to the scene-graph during UpdateManager::Update().
122 void ConnectToSceneGraph();
125 * Notify all observers that the object has been disconnected and remove constraints.
126 * This occurs when the object is disconnected from the scene-graph during UpdateManager::Update().
127 * @param[in] currentBufferIndex The current update buffer.
129 void DisconnectFromSceneGraph(BufferIndex updateBufferIndex);
132 * Reserve the given number of properties
134 void ReserveProperties(int propertyCount);
137 * Install a custom property.
138 * @post The PropertyOwner takes ownership of the property.
139 * @param[in] property A pointer to a newly allocated property.
141 void InstallCustomProperty(OwnerPointer<PropertyBase>& property);
144 * Retrieve the custom properties owned by the object.
145 * @return A container of properties.
147 OwnedPropertyContainer& GetCustomProperties()
149 return mCustomProperties;
153 * Retrieve the custom properties owned by the object.
154 * @return A container of properties.
156 const OwnedPropertyContainer& GetCustomProperties() const
158 return mCustomProperties;
162 * Mark an property owner with the updated flag.
163 * @param[in] updated The updated flag
165 virtual void SetUpdated(bool updated)
171 * Retrieve if the property owner is updated due to the property is being animating.
172 * @return An updated flag
182 * Apply a constraint.
183 * @param[in] constraint The constraint to apply.
185 void ApplyConstraint(OwnerPointer<ConstraintBase>& constraint);
188 * Begin removal of constraints.
189 * @param[in] constraint The constraint to remove.
191 void RemoveConstraint(ConstraintBase* constraint);
194 * Retrieve the constraints that are currently applied.
195 * @return A container of constraints.
197 ConstraintOwnerContainer& GetConstraints();
200 * @copydoc UniformMap::Add
202 virtual void AddUniformMapping(const UniformPropertyMapping& map);
205 * @copydoc UniformMap::Remove
207 virtual void RemoveUniformMapping(const ConstString& uniformName);
210 * Get the mappings table
212 const UniformMap& GetUniformMap() const;
215 * @copydoc UniformMap::AddUniformMapObserver
217 void AddUniformMapObserver(UniformMap::Observer& observer);
220 * @copydoc UniformMap::RemoveUniformMapObserver
222 void RemoveUniformMapObserver(UniformMap::Observer& observer);
225 * Query whether playing an animation is possible or not.
226 * @return true if playing an animation is possible.
228 virtual bool IsAnimationPossible() const
235 * Protected constructor.
241 PropertyOwner(const PropertyOwner&);
244 PropertyOwner& operator=(const PropertyOwner& rhs);
247 OwnedPropertyContainer mCustomProperties; ///< Properties provided with InstallCustomProperty()
248 UniformMap mUniformMaps; ///< Container of owned uniform maps
250 bool mIsConnectedToSceneGraph;
253 using ObserverContainer = Dali::Vector<PropertyOwner::Observer*>;
254 using ObserverIter = ObserverContainer::Iterator;
255 using ConstObserverIter = ObserverContainer::ConstIterator;
257 ObserverContainer mObservers; ///< Container of observer raw-pointers (not owned)
259 ConstraintOwnerContainer mConstraints; ///< Container of owned constraints
262 } // namespace SceneGraph
264 } // namespace Internal
268 #endif // DALI_INTERNAL_SCENE_GRAPH_PROPERTY_OWNER_H