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

   1 /*
   2  * Copyright (c) 2015 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/public-api/common/dali-common.h>
  23 #include <dali/public-api/math/vector2.h>
  24 #include <dali/public-api/math/radian.h>
  25 #include <dali/internal/event/actors/actor-impl.h>
  26 #include <dali/internal/event/common/property-notification-manager.h>
  27 #include <dali/internal/event/common/object-impl.h>
  28 #include <dali/internal/event/common/stage-impl.h>
  29 #include <dali/internal/update/manager/update-manager.h>
  30 #include <dali/internal/update/common/scene-graph-property-notification.h>
  31 #include <dali/internal/event/common/thread-local-storage.h>
  32
  33 using Dali::Internal::SceneGraph::UpdateManager;
  34
  35 namespace Dali
  36 {
  37
  38 namespace Internal
  39 {
  40
  41 PropertyNotificationPtr PropertyNotification::New(Property& target,
  42                                                   int componentIndex,
  43                                                   const Dali::PropertyCondition& condition)
  44 {
  45   ThreadLocalStorage& tls = ThreadLocalStorage::Get();
  46
  47   UpdateManager& updateManager = tls.GetUpdateManager();
  48
  49   StagePtr stage = Stage::GetCurrent();
  50   if( stage )
  51   {
  52     PropertyNotificationManager& propertyNotificationManager = stage->GetPropertyNotificationManager();
  53     PropertyNotificationPtr propertyNotification = new PropertyNotification(updateManager,
  54                                                                             propertyNotificationManager,
  55                                                                             target,
  56                                                                             componentIndex,
  57                                                                             condition);
  58     return propertyNotification;
  59   }
  60   else
  61   {
  62     return NULL;
  63   }
  64 }
  65
  66 PropertyNotification::PropertyNotification( UpdateManager& updateManager,
  67                                             PropertyNotificationManager& propertyNotificationManager,
  68                                             Property& target,
  69                                             int componentIndex,
  70                                             const Dali::PropertyCondition& condition )
  71 : mUpdateManager( updateManager ),
  72   mPropertyNotification( NULL ),
  73   mPropertyNotificationManager( propertyNotificationManager ),
  74   mObjectPropertyIndex( target.propertyIndex ),
  75   mPropertyType( Property::NONE ),
  76   mComponentIndex( componentIndex ),
  77   mCondition( condition ),
  78   mNotifyMode( Dali::PropertyNotification::NotifyOnTrue ),
  79   mNotifyResult( false )
  80 {
  81   const Internal::PropertyCondition& conditionImpl = GetImplementation( condition );
  82
  83   Dali::Vector<float>::SizeType count = conditionImpl.arguments.Count();
  84   for( Dali::Vector<float>::SizeType index = 0; index < count; ++index )
  85   {
  86     mRawConditionArgs.PushBack( conditionImpl.arguments[ index ] );
  87   }
  88
  89   // Observe target object and create/destroy notification scene object accordingly.
  90   mObject = dynamic_cast<Object*>( &GetImplementation(target.object) );
  91   if ( mObject )
  92   {
  93     mPropertyType = mObject->GetPropertyType(mObjectPropertyIndex);
  94
  95     int internalComponentIndex = mObject->GetPropertyComponentIndex(mObjectPropertyIndex);
  96     if( internalComponentIndex != Property::INVALID_COMPONENT_INDEX )
  97     {
  98       // override the one passed in
  99       mComponentIndex = internalComponentIndex;
 100     }
 101     if(mComponentIndex != Property::INVALID_COMPONENT_INDEX)
 102     {
 103       Property::Type type = mObject->GetPropertyType(mObjectPropertyIndex);
 104       if( type == Property::VECTOR2
 105           || type == Property::VECTOR3
 106           || type == Property::VECTOR4 )
 107       {
 108         mPropertyType = Property::FLOAT;
 109       }
 110     }
 111
 112     // Check if target scene-object already present, and if so create our notification
 113     // scene-object
 114     const SceneGraph::PropertyOwner* object = mObject->GetSceneObject();
 115     if (object)
 116     {
 117       CreateSceneObject();
 118     }
 119   }
 120
 121   // Connect to the property notification manager
 122   mPropertyNotificationManager.PropertyNotificationCreated( *this );
 123 }
 124
 125 PropertyNotification::~PropertyNotification()
 126 {
 127   Disable();
 128
 129   // Guard to disallow use of PropertyNotificationManager after Core has been destroyed
 130   if ( Stage::IsInstalled() )
 131   {
 132     // Disconnect from the property notification manager
 133     mPropertyNotificationManager.PropertyNotificationDestroyed( *this );
 134   }
 135 }
 136
 137 Dali::PropertyNotifySignalType& PropertyNotification::NotifySignal()
 138 {
 139   return mNotifySignal;
 140 }
 141
 142 void PropertyNotification::EmitSignalNotify()
 143 {
 144   Dali::PropertyNotification source(this);
 145
 146   mNotifySignal.Emit( source );
 147 }
 148
 149 void PropertyNotification::Enable()
 150 {
 151   CreateSceneObject();
 152 }
 153
 154 void PropertyNotification::Disable()
 155 {
 156   // Guard to allow handle destruction after Core has been destroyed
 157   if ( Stage::IsInstalled() )
 158   {
 159     // Stop scene-graph from monitoring the target's properties.
 160     DestroySceneObject();
 161   }
 162 }
 163
 164 void PropertyNotification::SetNotifyResult( bool result )
 165 {
 166   mNotifyResult = result;
 167 }
 168
 169 const Dali::PropertyCondition& PropertyNotification::GetCondition() const
 170 {
 171   return mCondition;
 172 }
 173
 174 Dali::Handle PropertyNotification::GetTarget() const
 175 {
 176   Dali::Handle handle(mObject);
 177
 178   return handle;
 179 }
 180
 181 Property::Index PropertyNotification::GetTargetProperty() const
 182 {
 183   return mObjectPropertyIndex;
 184 }
 185
 186 void PropertyNotification::SetNotifyMode( NotifyMode mode )
 187 {
 188   mNotifyMode = mode;
 189   if( mPropertyNotification )
 190   {
 191     PropertyNotificationSetNotifyModeMessage( mUpdateManager, mPropertyNotification, mode );
 192   }
 193 }
 194
 195 PropertyNotification::NotifyMode PropertyNotification::GetNotifyMode()
 196 {
 197   return mNotifyMode;
 198 }
 199
 200 bool PropertyNotification::GetNotifyResult() const
 201 {
 202   return mNotifyResult;
 203 }
 204
 205 bool PropertyNotification::CompareSceneObject( const SceneGraph::PropertyNotification* sceneObject )
 206 {
 207   return sceneObject && sceneObject == mPropertyNotification;
 208 }
 209
 210 void PropertyNotification::CreateSceneObject()
 211 {
 212   // this method can be called from constructor and on stage connection
 213   if( !mPropertyNotification )
 214   {
 215     // Create a new PropertyNotification, temporarily owned
 216     SceneGraph::PropertyNotification* propertyNotification = SceneGraph::PropertyNotification::New( *mObject,
 217                                                                                                     mObjectPropertyIndex,
 218                                                                                                     mPropertyType,
 219                                                                                                     mComponentIndex,
 220                                                                                                     GetImplementation(mCondition).type,
 221                                                                                                     mRawConditionArgs,
 222                                                                                                     mNotifyMode );
 223     // Keep a const pointer to the PropertyNotification.
 224     mPropertyNotification = propertyNotification;
 225
 226     // Transfer scene object ownership to the update manager through a message
 227     AddPropertyNotificationMessage( mUpdateManager, propertyNotification );
 228   }
 229 }
 230
 231 void PropertyNotification::DestroySceneObject()
 232 {
 233   if ( mPropertyNotification != NULL )
 234   {
 235     // Remove PropertyNotification using a message to the update manager
 236     RemovePropertyNotificationMessage( mUpdateManager, *mPropertyNotification );
 237     mPropertyNotification = NULL;
 238   }
 239 }
 240
 241 } // namespace Internal
 242
 243 } // namespace Dali