dali-toolkit/public-api/controls/control-impl.cpp

   1 /*
   2  * Copyright (c) 2020 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-toolkit/public-api/controls/control-impl.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/devel-api/scripting/scripting.h>
  23 #include <dali/integration-api/debug.h>
  24 #include <dali/public-api/animation/constraint.h>
  25 #include <dali/public-api/object/type-registry-helper.h>
  26 #include <dali/public-api/size-negotiation/relayout-container.h>
  27 #include <cstring> // for strcmp
  28 #include <limits>
  29 #include <stack>
  30 #include <typeinfo>
  31 #include <dali/public-api/object/type-info.h>
  32 #include <dali/devel-api/common/stage.h>
  33 #include <dali/devel-api/actors/actor-devel.h>
  34
  35 // INTERNAL INCLUDES
  36 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  37 #include <dali-toolkit/devel-api/controls/control-devel.h>
  38 #include <dali-toolkit/devel-api/focus-manager/keyinput-focus-manager.h>
  39 #include <dali-toolkit/devel-api/visuals/color-visual-actions-devel.h>
  40 #include <dali-toolkit/devel-api/visuals/color-visual-properties-devel.h>
  41 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
  42 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  43 #include <dali-toolkit/internal/visuals/color/color-visual.h>
  44 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
  45 #include <dali-toolkit/public-api/align-enumerations.h>
  46 #include <dali-toolkit/public-api/controls/control.h>
  47 #include <dali-toolkit/public-api/focus-manager/keyboard-focus-manager.h>
  48 #include <dali-toolkit/public-api/styling/style-manager.h>
  49 #include <dali-toolkit/public-api/visuals/color-visual-properties.h>
  50 #include <dali-toolkit/public-api/visuals/visual-properties.h>
  51 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
  52 #include <dali-toolkit/public-api/controls/image-view/image-view.h>
  53 #include <dali-toolkit/dali-toolkit.h>
  54
  55 namespace Dali
  56 {
  57 namespace Toolkit
  58 {
  59 namespace Internal
  60 {
  61 namespace
  62 {
  63 #if defined(DEBUG_ENABLED)
  64 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_CONTROL_VISUALS");
  65 #endif
  66
  67 /**
  68  * @brief Replace the background visual if it's a color visual with the renderIfTransparent property set as required.
  69  * @param[in] controlImpl The control implementation
  70  * @param[in] renderIfTransaparent Whether we should render if the color is transparent
  71  */
  72 void ChangeBackgroundColorVisual(Control& controlImpl, bool renderIfTransparent)
  73 {
  74   Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(controlImpl);
  75
  76   Toolkit::Visual::Base backgroundVisual = controlDataImpl.GetVisual(Toolkit::Control::Property::BACKGROUND);
  77   if(backgroundVisual && backgroundVisual.GetType() == Toolkit::Visual::COLOR)
  78   {
  79     Property::Map map;
  80     backgroundVisual.CreatePropertyMap(map);
  81
  82     // Only change it if it's a color visual
  83     map[Toolkit::DevelColorVisual::Property::RENDER_IF_TRANSPARENT] = renderIfTransparent;
  84     controlImpl.SetBackground(map);
  85   }
  86 }
  87
  88 /**
  89  * @brief Creates a clipping renderer if required.
  90  * (EG. If no renders exist and clipping is enabled).
  91  * @param[in] controlImpl The control implementation.
  92  */
  93 void CreateClippingRenderer(Control& controlImpl)
  94 {
  95   // We want to add a transparent background if we do not have one for clipping.
  96   Actor self(controlImpl.Self());
  97   int   clippingMode = ClippingMode::DISABLED;
  98   if(self.GetProperty(Actor::Property::CLIPPING_MODE).Get(clippingMode))
  99   {
 100     switch(clippingMode)
 101     {
 102       case ClippingMode::CLIP_CHILDREN:
 103       {
 104         if(self.GetRendererCount() == 0u)
 105         {
 106           Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(controlImpl);
 107           if(controlDataImpl.mVisuals.Empty())
 108           {
 109             controlImpl.SetBackgroundColor(Color::TRANSPARENT);
 110           }
 111           else
 112           {
 113             // We have visuals, check if we've set the background and re-create it to
 114             // render even if transparent (only if it's a color visual)
 115             ChangeBackgroundColorVisual(controlImpl, true);
 116           }
 117         }
 118         break;
 119       }
 120
 121       case ClippingMode::DISABLED:
 122       case ClippingMode::CLIP_TO_BOUNDING_BOX:
 123       {
 124         // If we have a background visual, check if it's a color visual and remove the render if transparent flag
 125         ChangeBackgroundColorVisual(controlImpl, false);
 126         break;
 127       }
 128     }
 129   }
 130 }
 131
 132 } // unnamed namespace
 133
 134 Toolkit::Control Control::New()
 135 {
 136   // Create the implementation, temporarily owned on stack
 137   IntrusivePtr<Control> controlImpl = new Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT));
 138
 139   // Pass ownership to handle
 140   Toolkit::Control handle(*controlImpl);
 141
 142   // Second-phase init of the implementation
 143   // This can only be done after the CustomActor connection has been made...
 144   controlImpl->Initialize();
 145
 146   return handle;
 147 }
 148
 149 void Control::SetStyleName(const std::string& styleName)
 150 {
 151   if(styleName != mImpl->mStyleName)
 152   {
 153     mImpl->mStyleName = styleName;
 154
 155     // Apply new style, if stylemanager is available
 156     Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
 157     if(styleManager)
 158     {
 159       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 160     }
 161   }
 162 }
 163
 164 const std::string& Control::GetStyleName() const
 165 {
 166   return mImpl->mStyleName;
 167 }
 168
 169 void Control::SetBackgroundColor(const Vector4& color)
 170 {
 171   mImpl->mBackgroundColor = color;
 172
 173   Property::Map map;
 174   map[Toolkit::Visual::Property::TYPE]           = Toolkit::Visual::COLOR;
 175   map[Toolkit::ColorVisual::Property::MIX_COLOR] = color;
 176
 177   bool renderIfTransparent = false;
 178   int  clippingMode        = ClippingMode::DISABLED;
 179   if((Self().GetProperty(Actor::Property::CLIPPING_MODE).Get(clippingMode)) &&
 180      (clippingMode == ClippingMode::CLIP_CHILDREN))
 181   {
 182     // If clipping-mode is set to CLIP_CHILDREN, then force visual to add the render even if transparent
 183     map[Toolkit::DevelColorVisual::Property::RENDER_IF_TRANSPARENT] = true;
 184     renderIfTransparent                                             = true;
 185   }
 186
 187   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 188   if(visual && visual.GetType() == Toolkit::Visual::COLOR)
 189   {
 190     Property::Map visualMap;
 191     visual.CreatePropertyMap(visualMap);
 192
 193     Property::Value* renderValue = visualMap.Find(Toolkit::DevelColorVisual::Property::RENDER_IF_TRANSPARENT);
 194     Property::Value* colorValue  = visualMap.Find(Toolkit::ColorVisual::Property::MIX_COLOR);
 195     if(renderValue && colorValue)
 196     {
 197       if((renderValue->Get<bool>() == true || colorValue->Get<Vector4>().a > 0.0f) && (renderIfTransparent || color.a > 0.0f))
 198       {
 199         // Update background color only
 200         mImpl->DoAction(Toolkit::Control::Property::BACKGROUND, DevelColorVisual::Action::UPDATE_PROPERTY, map);
 201         return;
 202       }
 203     }
 204   }
 205
 206   SetBackground(map);
 207 }
 208
 209 void Control::SetBackground(const Property::Map& map)
 210 {
 211   Toolkit::Visual::Base visual = Toolkit::VisualFactory::Get().CreateVisual(map);
 212   visual.SetName("background");
 213   if(visual)
 214   {
 215     mImpl->RegisterVisual(Toolkit::Control::Property::BACKGROUND, visual, DepthIndex::BACKGROUND);
 216
 217     // Trigger a size negotiation request that may be needed by the new visual to relayout its contents.
 218     RelayoutRequest();
 219   }
 220 }
 221
 222 void Control::ClearBackground()
 223 {
 224   mImpl->UnregisterVisual(Toolkit::Control::Property::BACKGROUND);
 225   mImpl->mBackgroundColor = Color::TRANSPARENT;
 226
 227   // Trigger a size negotiation request that may be needed when unregistering a visual.
 228   RelayoutRequest();
 229 }
 230
 231 void Control::EnableGestureDetection(GestureType::Value type)
 232 {
 233   if((type & GestureType::PINCH) && !mImpl->mPinchGestureDetector)
 234   {
 235     mImpl->mPinchGestureDetector = PinchGestureDetector::New();
 236     mImpl->mPinchGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PinchDetected);
 237     mImpl->mPinchGestureDetector.Attach(Self());
 238   }
 239
 240   if((type & GestureType::PAN) && !mImpl->mPanGestureDetector)
 241   {
 242     mImpl->mPanGestureDetector = PanGestureDetector::New();
 243     mImpl->mPanGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PanDetected);
 244     mImpl->mPanGestureDetector.Attach(Self());
 245   }
 246
 247   if((type & GestureType::TAP) && !mImpl->mTapGestureDetector)
 248   {
 249     mImpl->mTapGestureDetector = TapGestureDetector::New();
 250     mImpl->mTapGestureDetector.DetectedSignal().Connect(mImpl, &Impl::TapDetected);
 251     mImpl->mTapGestureDetector.Attach(Self());
 252   }
 253
 254   if((type & GestureType::LONG_PRESS) && !mImpl->mLongPressGestureDetector)
 255   {
 256     mImpl->mLongPressGestureDetector = LongPressGestureDetector::New();
 257     mImpl->mLongPressGestureDetector.DetectedSignal().Connect(mImpl, &Impl::LongPressDetected);
 258     mImpl->mLongPressGestureDetector.Attach(Self());
 259   }
 260 }
 261
 262 void Control::DisableGestureDetection(GestureType::Value type)
 263 {
 264   if((type & GestureType::PINCH) && mImpl->mPinchGestureDetector)
 265   {
 266     mImpl->mPinchGestureDetector.Detach(Self());
 267     mImpl->mPinchGestureDetector.Reset();
 268   }
 269
 270   if((type & GestureType::PAN) && mImpl->mPanGestureDetector)
 271   {
 272     mImpl->mPanGestureDetector.Detach(Self());
 273     mImpl->mPanGestureDetector.Reset();
 274   }
 275
 276   if((type & GestureType::TAP) && mImpl->mTapGestureDetector)
 277   {
 278     mImpl->mTapGestureDetector.Detach(Self());
 279     mImpl->mTapGestureDetector.Reset();
 280   }
 281
 282   if((type & GestureType::LONG_PRESS) && mImpl->mLongPressGestureDetector)
 283   {
 284     mImpl->mLongPressGestureDetector.Detach(Self());
 285     mImpl->mLongPressGestureDetector.Reset();
 286   }
 287 }
 288
 289 PinchGestureDetector Control::GetPinchGestureDetector() const
 290 {
 291   return mImpl->mPinchGestureDetector;
 292 }
 293
 294 PanGestureDetector Control::GetPanGestureDetector() const
 295 {
 296   return mImpl->mPanGestureDetector;
 297 }
 298
 299 TapGestureDetector Control::GetTapGestureDetector() const
 300 {
 301   return mImpl->mTapGestureDetector;
 302 }
 303
 304 LongPressGestureDetector Control::GetLongPressGestureDetector() const
 305 {
 306   return mImpl->mLongPressGestureDetector;
 307 }
 308
 309 void Control::SetKeyboardNavigationSupport(bool isSupported)
 310 {
 311   mImpl->mIsKeyboardNavigationSupported = isSupported;
 312 }
 313
 314 bool Control::IsKeyboardNavigationSupported()
 315 {
 316   return mImpl->mIsKeyboardNavigationSupported;
 317 }
 318
 319 void Control::SetKeyInputFocus()
 320 {
 321   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 322   {
 323     Toolkit::KeyInputFocusManager::Get().SetFocus(Toolkit::Control::DownCast(Self()));
 324   }
 325 }
 326
 327 bool Control::HasKeyInputFocus()
 328 {
 329   bool result = false;
 330   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 331   {
 332     Toolkit::Control control = Toolkit::KeyInputFocusManager::Get().GetCurrentFocusControl();
 333     if(Self() == control)
 334     {
 335       result = true;
 336     }
 337   }
 338   return result;
 339 }
 340
 341 void Control::ClearKeyInputFocus()
 342 {
 343   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 344   {
 345     Toolkit::KeyInputFocusManager::Get().RemoveFocus(Toolkit::Control::DownCast(Self()));
 346   }
 347 }
 348
 349 void Control::SetAsKeyboardFocusGroup(bool isFocusGroup)
 350 {
 351   mImpl->mIsKeyboardFocusGroup = isFocusGroup;
 352
 353   // The following line will be removed when the deprecated API in KeyboardFocusManager is deleted
 354   Toolkit::KeyboardFocusManager::Get().SetAsFocusGroup(Self(), isFocusGroup);
 355 }
 356
 357 bool Control::IsKeyboardFocusGroup()
 358 {
 359   return Toolkit::KeyboardFocusManager::Get().IsFocusGroup(Self());
 360 }
 361
 362 void Control::AccessibilityActivate()
 363 {
 364   // Inform deriving classes
 365   OnAccessibilityActivated();
 366 }
 367
 368 void Control::KeyboardEnter()
 369 {
 370   // Inform deriving classes
 371   OnKeyboardEnter();
 372 }
 373
 374 bool Control::OnAccessibilityActivated()
 375 {
 376   if( Toolkit::KeyboardFocusManager::Get().SetCurrentFocusActor( Self() ) )
 377   {
 378     return OnKeyboardEnter();
 379   }
 380   return false;
 381 }
 382
 383 bool Control::OnKeyboardEnter()
 384 {
 385   return false; // Keyboard enter is not handled by default
 386 }
 387
 388 bool Control::OnAccessibilityPan(PanGesture gesture)
 389 {
 390   return false; // Accessibility pan gesture is not handled by default
 391 }
 392
 393 bool Control::OnAccessibilityValueChange(bool isIncrease)
 394 {
 395   return false; // Accessibility value change action is not handled by default
 396 }
 397
 398 bool Control::OnAccessibilityZoom()
 399 {
 400   return false; // Accessibility zoom action is not handled by default
 401 }
 402
 403 Actor Control::GetNextKeyboardFocusableActor(Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 404 {
 405   return Actor();
 406 }
 407
 408 void Control::OnKeyboardFocusChangeCommitted(Actor commitedFocusableActor)
 409 {
 410 }
 411
 412 Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
 413 {
 414   return mImpl->mKeyEventSignal;
 415 }
 416
 417 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusGainedSignal()
 418 {
 419   return mImpl->mKeyInputFocusGainedSignal;
 420 }
 421
 422 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusLostSignal()
 423 {
 424   return mImpl->mKeyInputFocusLostSignal;
 425 }
 426
 427 bool Control::EmitKeyEventSignal(const KeyEvent& event)
 428 {
 429   // Guard against destruction during signal emission
 430   Dali::Toolkit::Control handle(GetOwner());
 431
 432   bool consumed = false;
 433
 434   consumed = mImpl->FilterKeyEvent(event);
 435
 436   // signals are allocated dynamically when someone connects
 437   if(!consumed && !mImpl->mKeyEventSignal.Empty())
 438   {
 439     consumed = mImpl->mKeyEventSignal.Emit(handle, event);
 440   }
 441
 442   if(!consumed)
 443   {
 444     // Notification for derived classes
 445     consumed = OnKeyEvent(event);
 446   }
 447
 448   return consumed;
 449 }
 450
 451 Control::Control(ControlBehaviour behaviourFlags)
 452 : CustomActorImpl(static_cast<ActorFlags>(behaviourFlags)),
 453   mImpl(new Impl(*this))
 454 {
 455   mImpl->mFlags = behaviourFlags;
 456 }
 457
 458 Control::~Control()
 459 {
 460   delete mImpl;
 461 }
 462
 463 void Control::Initialize()
 464 {
 465   // Call deriving classes so initialised before styling is applied to them.
 466   OnInitialize();
 467
 468   if(!(mImpl->mFlags & DISABLE_STYLE_CHANGE_SIGNALS))
 469   {
 470     Toolkit::StyleManager styleManager = StyleManager::Get();
 471
 472     // if stylemanager is available
 473     if(styleManager)
 474     {
 475       StyleManager& styleManagerImpl = GetImpl(styleManager);
 476
 477       // Register for style changes
 478       styleManagerImpl.ControlStyleChangeSignal().Connect(this, &Control::OnStyleChange);
 479
 480       // Apply the current style
 481       styleManagerImpl.ApplyThemeStyleAtInit(Toolkit::Control(GetOwner()));
 482     }
 483   }
 484
 485   if(mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT)
 486   {
 487     SetKeyboardNavigationSupport(true);
 488   }
 489
 490   Dali::TypeInfo type;
 491   Self().GetTypeInfo( type );
 492   if (type)
 493   {
 494     auto typeName = type.GetName();
 495     DevelControl::AppendAccessibilityAttribute( Self(), "t", typeName );
 496   }
 497
 498   if (Accessibility::IsUp())
 499     mImpl->AccessibilityRegister();
 500 }
 501
 502 void Control::OnInitialize()
 503 {
 504 }
 505
 506 void Control::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 507 {
 508   // By default the control is only interested in theme (not font) changes
 509   if(styleManager && change == StyleChange::THEME_CHANGE)
 510   {
 511     GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 512     RelayoutRequest();
 513   }
 514 }
 515
 516 void Control::OnPinch(const PinchGesture& pinch)
 517 {
 518   if(!(mImpl->mStartingPinchScale))
 519   {
 520     // lazy allocate
 521     mImpl->mStartingPinchScale = new Vector3;
 522   }
 523
 524   if(pinch.GetState() == GestureState::STARTED)
 525   {
 526     *(mImpl->mStartingPinchScale) = Self().GetCurrentProperty<Vector3>(Actor::Property::SCALE);
 527   }
 528
 529   Self().SetProperty(Actor::Property::SCALE, *(mImpl->mStartingPinchScale) * pinch.GetScale());
 530 }
 531
 532 void Control::OnPan(const PanGesture& pan)
 533 {
 534 }
 535
 536 void Control::OnTap(const TapGesture& tap)
 537 {
 538 }
 539
 540 void Control::OnLongPress(const LongPressGesture& longPress)
 541 {
 542 }
 543
 544 void Control::EmitKeyInputFocusSignal(bool focusGained)
 545 {
 546   Dali::Toolkit::Control handle(GetOwner());
 547
 548   if( Accessibility::IsUp() )
 549   {
 550     auto self = mImpl->GetAccessibilityObject( Self() );
 551     self->EmitFocused( focusGained );
 552     auto parent = self->GetParent();
 553     if( parent && !self->GetStates()[Dali::Accessibility::State::MANAGES_DESCENDANTS] )
 554     {
 555       parent->EmitActiveDescendantChanged( parent, self );
 556     }
 557   }
 558
 559   if(focusGained)
 560   {
 561     // signals are allocated dynamically when someone connects
 562     if(!mImpl->mKeyInputFocusGainedSignal.Empty())
 563     {
 564       mImpl->mKeyInputFocusGainedSignal.Emit(handle);
 565     }
 566   }
 567   else
 568   {
 569     // signals are allocated dynamically when someone connects
 570     if(!mImpl->mKeyInputFocusLostSignal.Empty())
 571     {
 572       mImpl->mKeyInputFocusLostSignal.Emit(handle);
 573     }
 574   }
 575 }
 576
 577 void Control::OnSceneConnection(int depth)
 578 {
 579   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection number of registered visuals(%d)\n", mImpl->mVisuals.Size());
 580
 581   Actor self(Self());
 582
 583   for(RegisteredVisualContainer::Iterator iter = mImpl->mVisuals.Begin(); iter != mImpl->mVisuals.End(); iter++)
 584   {
 585     // Check whether the visual is empty and enabled
 586     if((*iter)->visual && (*iter)->enabled)
 587     {
 588       DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection Setting visual(%d) on scene\n", (*iter)->index);
 589       Toolkit::GetImplementation((*iter)->visual).SetOnScene(self);
 590     }
 591   }
 592
 593   // The clipping renderer is only created if required.
 594   CreateClippingRenderer(*this);
 595
 596   // Request to be laid out when the control is connected to the Scene.
 597   // Signal that a Relayout may be needed
 598   if( Accessibility::IsUp() )
 599   {
 600     mImpl->AccessibilityRegister();
 601   }
 602 }
 603
 604 void Control::OnSceneDisconnection()
 605 {
 606   if( Accessibility::IsUp() )
 607   {
 608     mImpl->AccessibilityDeregister();
 609   }
 610   mImpl->OnSceneDisconnection();
 611 }
 612
 613 void Control::OnKeyInputFocusGained()
 614 {
 615   EmitKeyInputFocusSignal(true);
 616 }
 617
 618 void Control::OnKeyInputFocusLost()
 619 {
 620   EmitKeyInputFocusSignal(false);
 621 }
 622
 623 void Control::OnChildAdd(Actor& child)
 624 {
 625 }
 626
 627 void Control::OnChildRemove(Actor& child)
 628 {
 629 }
 630
 631 void Control::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 632 {
 633   // If the clipping mode has been set, we may need to create a renderer.
 634   // Only do this if we are already on-stage as the OnSceneConnection will handle the off-stage clipping controls.
 635   switch( index )
 636   {
 637     case Actor::Property::CLIPPING_MODE:
 638     {
 639       if( Self().GetProperty< bool >( Actor::Property::CONNECTED_TO_SCENE ))
 640       {
 641         // Note: This method will handle whether creation of the renderer is required.
 642         CreateClippingRenderer( *this );
 643       }
 644       break;
 645     }
 646     case Actor::Property::VISIBLE:
 647     {
 648       if( Dali::Accessibility::IsUp() )
 649       {
 650         Dali::Accessibility::Accessible::Get(Self())->EmitVisible( Self().GetProperty( Actor::Property::VISIBLE ).Get<bool>() );
 651       }
 652       break;
 653     }
 654     case Toolkit::DevelControl::Property::ACCESSIBILITY_NAME:
 655     {
 656       if( Dali::Accessibility::IsUp() )
 657       {
 658         Dali::Accessibility::Accessible::Get(Self())->Emit( Dali::Accessibility::ObjectPropertyChangeEvent::NAME );
 659       }
 660       break;
 661     }
 662     case Toolkit::DevelControl::Property::ACCESSIBILITY_ROLE:
 663     {
 664       if( Dali::Accessibility::IsUp() )
 665       {
 666         Dali::Accessibility::Accessible::Get(Self())->Emit( Dali::Accessibility::ObjectPropertyChangeEvent::ROLE );
 667       }
 668       break;
 669     }
 670     case Toolkit::DevelControl::Property::ACCESSIBILITY_DESCRIPTION:
 671     {
 672       if( Dali::Accessibility::IsUp() )
 673       {
 674         Dali::Accessibility::Accessible::Get(Self())->Emit( Dali::Accessibility::ObjectPropertyChangeEvent::DESCRIPTION );
 675       }
 676       break;
 677     }
 678   }
 679 }
 680
 681 void Control::OnSizeSet(const Vector3& targetSize)
 682 {
 683   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 684   if(visual)
 685   {
 686     Vector2 size(targetSize);
 687     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 688   }
 689 }
 690
 691 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 692 {
 693   // @todo size negotiate background to new size, animate as well?
 694 }
 695
 696 bool Control::OnKeyEvent(const KeyEvent& event)
 697 {
 698   return false; // Do not consume
 699 }
 700
 701 void Control::OnRelayout(const Vector2& size, RelayoutContainer& container)
 702 {
 703   for(unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i)
 704   {
 705     Actor   child = Self().GetChildAt(i);
 706     Vector2 newChildSize(size);
 707
 708     // When set the padding or margin on the control, child should be resized and repositioned.
 709     if((mImpl->mPadding.start != 0) || (mImpl->mPadding.end != 0) || (mImpl->mPadding.top != 0) || (mImpl->mPadding.bottom != 0) ||
 710        (mImpl->mMargin.start != 0) || (mImpl->mMargin.end != 0) || (mImpl->mMargin.top != 0) || (mImpl->mMargin.bottom != 0))
 711     {
 712       Extents padding = mImpl->mPadding;
 713
 714       Dali::CustomActor           ownerActor(GetOwner());
 715       Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(ownerActor.GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 716
 717       if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 718       {
 719         std::swap(padding.start, padding.end);
 720       }
 721
 722       newChildSize.width  = size.width - (padding.start + padding.end);
 723       newChildSize.height = size.height - (padding.top + padding.bottom);
 724
 725       // Cannot use childs Position property as it can already have padding and margin applied on it,
 726       // so we end up cumulatively applying them over and over again.
 727       Vector2 childOffset(0.f, 0.f);
 728       childOffset.x += (mImpl->mMargin.start + padding.start);
 729       childOffset.y += (mImpl->mMargin.top + padding.top);
 730
 731       child.SetProperty(Actor::Property::POSITION, Vector2(childOffset.x, childOffset.y));
 732     }
 733     container.Add(child, newChildSize);
 734   }
 735
 736   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 737   if(visual)
 738   {
 739     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 740   }
 741 }
 742
 743 void Control::OnSetResizePolicy(ResizePolicy::Type policy, Dimension::Type dimension)
 744 {
 745 }
 746
 747 Vector3 Control::GetNaturalSize()
 748 {
 749   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::GetNaturalSize for %s\n", Self().GetProperty<std::string>(Dali::Actor::Property::NAME).c_str());
 750   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 751   if(visual)
 752   {
 753     Vector2 naturalSize;
 754     visual.GetNaturalSize(naturalSize);
 755     naturalSize.width += (mImpl->mPadding.start + mImpl->mPadding.end);
 756     naturalSize.height += (mImpl->mPadding.top + mImpl->mPadding.bottom);
 757     return Vector3(naturalSize);
 758   }
 759   return Vector3::ZERO;
 760 }
 761
 762 float Control::CalculateChildSize(const Dali::Actor& child, Dimension::Type dimension)
 763 {
 764   return CalculateChildSizeBase(child, dimension);
 765 }
 766
 767 float Control::GetHeightForWidth(float width)
 768 {
 769   return GetHeightForWidthBase(width);
 770 }
 771
 772 float Control::GetWidthForHeight(float height)
 773 {
 774   return GetWidthForHeightBase(height);
 775 }
 776
 777 bool Control::RelayoutDependentOnChildren(Dimension::Type dimension)
 778 {
 779   return RelayoutDependentOnChildrenBase(dimension);
 780 }
 781
 782 void Control::OnCalculateRelayoutSize(Dimension::Type dimension)
 783 {
 784 }
 785
 786 void Control::OnLayoutNegotiated(float size, Dimension::Type dimension)
 787 {
 788 }
 789
 790 void Control::SignalConnected(SlotObserver* slotObserver, CallbackBase* callback)
 791 {
 792   mImpl->SignalConnected(slotObserver, callback);
 793 }
 794
 795 void Control::SignalDisconnected(SlotObserver* slotObserver, CallbackBase* callback)
 796 {
 797   mImpl->SignalDisconnected(slotObserver, callback);
 798 }
 799
 800 Control& GetImplementation(Dali::Toolkit::Control& handle)
 801 {
 802   CustomActorImpl& customInterface = handle.GetImplementation();
 803   // downcast to control
 804   Control& impl = dynamic_cast<Internal::Control&>(customInterface);
 805   return impl;
 806 }
 807
 808 const Control& GetImplementation(const Dali::Toolkit::Control& handle)
 809 {
 810   const CustomActorImpl& customInterface = handle.GetImplementation();
 811   // downcast to control
 812   const Control& impl = dynamic_cast<const Internal::Control&>(customInterface);
 813   return impl;
 814 }
 815
 816 } // namespace Internal
 817
 818 } // namespace Toolkit
 819
 820 } // namespace Dali