dali/internal/event/common/property-notification-impl.cpp

   1 /*
   2  * Copyright (c) 2022 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali/internal/event/common/property-notification-impl.h>
  20
  21 // INTERNAL INCLUDES
  22 #include <dali/internal/event/actors/actor-impl.h>
  23 #include <dali/internal/event/common/object-impl.h>
  24 #include <dali/internal/event/common/property-notification-manager.h>
  25 #include <dali/internal/event/common/stage-impl.h>
  26 #include <dali/internal/event/common/thread-local-storage.h>
  27 #include <dali/internal/update/common/scene-graph-property-notification.h>
  28 #include <dali/internal/update/manager/update-manager.h>
  29 #include <dali/public-api/actors/actor.h>
  30 #include <dali/public-api/common/dali-common.h>
  31 #include <dali/public-api/math/radian.h>
  32 #include <dali/public-api/math/vector2.h>
  33
  34 using Dali::Internal::SceneGraph::UpdateManager;
  35
  36 namespace Dali
  37 {
  38 namespace Internal
  39 {
  40 PropertyNotificationPtr PropertyNotification::New(Property&                      target,
  41                                                   int                            componentIndex,
  42                                                   const Dali::PropertyCondition& condition)
  43 {
  44   ThreadLocalStorage& tls = ThreadLocalStorage::Get();
  45
  46   UpdateManager& updateManager = tls.GetUpdateManager();
  47
  48   PropertyNotificationManager& propertyNotificationManager = tls.GetPropertyNotificationManager();
  49   PropertyNotificationPtr      propertyNotification        = new PropertyNotification(updateManager,
  50                                                                           propertyNotificationManager,
  51                                                                           target,
  52                                                                           componentIndex,
  53                                                                           condition);
  54   return propertyNotification;
  55 }
  56
  57 PropertyNotification::PropertyNotification(UpdateManager&                 updateManager,
  58                                            PropertyNotificationManager&   propertyNotificationManager,
  59                                            Property&                      target,
  60                                            int                            componentIndex,
  61                                            const Dali::PropertyCondition& condition)
  62 : mUpdateManager(updateManager),
  63   mPropertyNotification(nullptr),
  64   mPropertyNotificationManager(propertyNotificationManager),
  65   mObjectPropertyIndex(target.propertyIndex),
  66   mPropertyType(Property::NONE),
  67   mComponentIndex(componentIndex),
  68   mCondition(condition),
  69   mNotifyMode(Dali::PropertyNotification::NOTIFY_ON_TRUE),
  70   mNotifyResult(false),
  71   mCompare(false)
  72 {
  73   const Internal::PropertyCondition& conditionImpl = GetImplementation(condition);
  74
  75   Dali::Vector<float>::SizeType count = conditionImpl.arguments.Count();
  76   for(Dali::Vector<float>::SizeType index = 0; index < count; ++index)
  77   {
  78     mRawConditionArgs.PushBack(conditionImpl.arguments[index]);
  79   }
  80
  81   // Observe target object and create/destroy notification scene object accordingly.
  82   mObject = dynamic_cast<Object*>(&GetImplementation(target.object));
  83   if(mObject)
  84   {
  85     mPropertyType = mObject->GetPropertyType(mObjectPropertyIndex);
  86
  87     int internalComponentIndex = mObject->GetPropertyComponentIndex(mObjectPropertyIndex);
  88     if(internalComponentIndex != Property::INVALID_COMPONENT_INDEX)
  89     {
  90       // override the one passed in
  91       mComponentIndex = internalComponentIndex;
  92     }
  93     if(mComponentIndex != Property::INVALID_COMPONENT_INDEX)
  94     {
  95       Property::Type type = mObject->GetPropertyType(mObjectPropertyIndex);
  96       if(type == Property::VECTOR2 || type == Property::VECTOR3 || type == Property::VECTOR4)
  97       {
  98         mPropertyType = Property::FLOAT;
  99       }
 100     }
 101
 102     // To cover swapping components, previous and current components should be compared.
 103     if(mObject->GetPropertyType(mObjectPropertyIndex) == Property::VECTOR3)
 104     {
 105       mCompare = true;
 106       for(int i = 0; i < 3; ++i)
 107       {
 108         mRawConditionArgs.PushBack(0.0f);
 109       }
 110     }
 111
 112     // all objects always have scene object
 113     CreateSceneObject();
 114   }
 115
 116   // Connect to the property notification manager
 117   mPropertyNotificationManager.PropertyNotificationCreated(*this);
 118 }
 119
 120 PropertyNotification::~PropertyNotification()
 121 {
 122   Disable();
 123
 124   // Guard to disallow use of PropertyNotificationManager after Core has been destroyed
 125   if(Stage::IsInstalled())
 126   {
 127     // Disconnect from the property notification manager
 128     mPropertyNotificationManager.PropertyNotificationDestroyed(*this);
 129   }
 130 }
 131
 132 Dali::PropertyNotifySignalType& PropertyNotification::NotifySignal()
 133 {
 134   return mNotifySignal;
 135 }
 136
 137 void PropertyNotification::EmitSignalNotify()
 138 {
 139   Dali::PropertyNotification source(this);
 140
 141   mNotifySignal.Emit(source);
 142 }
 143
 144 void PropertyNotification::Enable()
 145 {
 146   CreateSceneObject();
 147 }
 148
 149 void PropertyNotification::Disable()
 150 {
 151   // Guard to allow handle destruction after Core has been destroyed
 152   if(Stage::IsInstalled())
 153   {
 154     // Stop scene-graph from monitoring the target's properties.
 155     DestroySceneObject();
 156   }
 157 }
 158
 159 void PropertyNotification::SetNotifyResult(bool result)
 160 {
 161   mNotifyResult = result;
 162 }
 163
 164 const Dali::PropertyCondition& PropertyNotification::GetCondition() const
 165 {
 166   return mCondition;
 167 }
 168
 169 Dali::Handle PropertyNotification::GetTarget() const
 170 {
 171   Dali::Handle handle(mObject);
 172
 173   return handle;
 174 }
 175
 176 Property::Index PropertyNotification::GetTargetProperty() const
 177 {
 178   return mObjectPropertyIndex;
 179 }
 180
 181 void PropertyNotification::SetNotifyMode(NotifyMode mode)
 182 {
 183   mNotifyMode = mode;
 184   if(mPropertyNotification)
 185   {
 186     PropertyNotificationSetNotifyModeMessage(mUpdateManager, mPropertyNotification, mode);
 187   }
 188 }
 189
 190 PropertyNotification::NotifyMode PropertyNotification::GetNotifyMode()
 191 {
 192   return mNotifyMode;
 193 }
 194
 195 bool PropertyNotification::GetNotifyResult() const
 196 {
 197   return mNotifyResult;
 198 }
 199
 200 bool PropertyNotification::CompareSceneObject(const SceneGraph::PropertyNotification* sceneObject)
 201 {
 202   return sceneObject && sceneObject == mPropertyNotification;
 203 }
 204
 205 void PropertyNotification::CreateSceneObject()
 206 {
 207   // this method can be called from constructor and on stage connection
 208   if(!mPropertyNotification)
 209   {
 210     const PropertyInputImpl* property = mObject->GetSceneObjectInputProperty(mObjectPropertyIndex);
 211
 212     // Create a new PropertyNotification, keep a const pointer to it
 213     mPropertyNotification = SceneGraph::PropertyNotification::New(property,
 214                                                                   mObjectPropertyIndex,
 215                                                                   mPropertyType,
 216                                                                   mComponentIndex,
 217                                                                   GetImplementation(mCondition).type,
 218                                                                   mRawConditionArgs,
 219                                                                   mNotifyMode,
 220                                                                   mCompare);
 221     OwnerPointer<SceneGraph::PropertyNotification> transferOwnership(const_cast<SceneGraph::PropertyNotification*>(mPropertyNotification));
 222     AddPropertyNotificationMessage(mUpdateManager, transferOwnership);
 223   }
 224 }
 225
 226 void PropertyNotification::DestroySceneObject()
 227 {
 228   if(mPropertyNotification != nullptr)
 229   {
 230     // Remove PropertyNotification using a message to the update manager
 231     RemovePropertyNotificationMessage(mUpdateManager, *mPropertyNotification);
 232     mPropertyNotification = nullptr;
 233   }
 234 }
 235
 236 } // namespace Internal
 237
 238 } // namespace Dali