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