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.SetMaximumTouchesRequired(2);
 244     mImpl->mPanGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PanDetected);
 245     mImpl->mPanGestureDetector.Attach(Self());
 246   }
 247
 248   if((type & GestureType::TAP) && !mImpl->mTapGestureDetector)
 249   {
 250     mImpl->mTapGestureDetector = TapGestureDetector::New();
 251     mImpl->mTapGestureDetector.DetectedSignal().Connect(mImpl, &Impl::TapDetected);
 252     mImpl->mTapGestureDetector.Attach(Self());
 253   }
 254
 255   if((type & GestureType::LONG_PRESS) && !mImpl->mLongPressGestureDetector)
 256   {
 257     mImpl->mLongPressGestureDetector = LongPressGestureDetector::New();
 258     mImpl->mLongPressGestureDetector.DetectedSignal().Connect(mImpl, &Impl::LongPressDetected);
 259     mImpl->mLongPressGestureDetector.Attach(Self());
 260   }
 261 }
 262
 263 void Control::DisableGestureDetection(GestureType::Value type)
 264 {
 265   if((type & GestureType::PINCH) && mImpl->mPinchGestureDetector)
 266   {
 267     mImpl->mPinchGestureDetector.Detach(Self());
 268     mImpl->mPinchGestureDetector.Reset();
 269   }
 270
 271   if((type & GestureType::PAN) && mImpl->mPanGestureDetector)
 272   {
 273     mImpl->mPanGestureDetector.Detach(Self());
 274     mImpl->mPanGestureDetector.Reset();
 275   }
 276
 277   if((type & GestureType::TAP) && mImpl->mTapGestureDetector)
 278   {
 279     mImpl->mTapGestureDetector.Detach(Self());
 280     mImpl->mTapGestureDetector.Reset();
 281   }
 282
 283   if((type & GestureType::LONG_PRESS) && mImpl->mLongPressGestureDetector)
 284   {
 285     mImpl->mLongPressGestureDetector.Detach(Self());
 286     mImpl->mLongPressGestureDetector.Reset();
 287   }
 288 }
 289
 290 PinchGestureDetector Control::GetPinchGestureDetector() const
 291 {
 292   return mImpl->mPinchGestureDetector;
 293 }
 294
 295 PanGestureDetector Control::GetPanGestureDetector() const
 296 {
 297   return mImpl->mPanGestureDetector;
 298 }
 299
 300 TapGestureDetector Control::GetTapGestureDetector() const
 301 {
 302   return mImpl->mTapGestureDetector;
 303 }
 304
 305 LongPressGestureDetector Control::GetLongPressGestureDetector() const
 306 {
 307   return mImpl->mLongPressGestureDetector;
 308 }
 309
 310 void Control::SetKeyboardNavigationSupport(bool isSupported)
 311 {
 312   mImpl->mIsKeyboardNavigationSupported = isSupported;
 313 }
 314
 315 bool Control::IsKeyboardNavigationSupported()
 316 {
 317   return mImpl->mIsKeyboardNavigationSupported;
 318 }
 319
 320 void Control::SetKeyInputFocus()
 321 {
 322   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 323   {
 324     Toolkit::KeyInputFocusManager::Get().SetFocus(Toolkit::Control::DownCast(Self()));
 325   }
 326 }
 327
 328 bool Control::HasKeyInputFocus()
 329 {
 330   bool result = false;
 331   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 332   {
 333     Toolkit::Control control = Toolkit::KeyInputFocusManager::Get().GetCurrentFocusControl();
 334     if(Self() == control)
 335     {
 336       result = true;
 337     }
 338   }
 339   return result;
 340 }
 341
 342 void Control::ClearKeyInputFocus()
 343 {
 344   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 345   {
 346     Toolkit::KeyInputFocusManager::Get().RemoveFocus(Toolkit::Control::DownCast(Self()));
 347   }
 348 }
 349
 350 void Control::SetAsKeyboardFocusGroup(bool isFocusGroup)
 351 {
 352   mImpl->mIsKeyboardFocusGroup = isFocusGroup;
 353
 354   // The following line will be removed when the deprecated API in KeyboardFocusManager is deleted
 355   Toolkit::KeyboardFocusManager::Get().SetAsFocusGroup(Self(), isFocusGroup);
 356 }
 357
 358 bool Control::IsKeyboardFocusGroup()
 359 {
 360   return Toolkit::KeyboardFocusManager::Get().IsFocusGroup(Self());
 361 }
 362
 363 void Control::AccessibilityActivate()
 364 {
 365   // Inform deriving classes
 366   OnAccessibilityActivated();
 367 }
 368
 369 void Control::KeyboardEnter()
 370 {
 371   // Inform deriving classes
 372   OnKeyboardEnter();
 373 }
 374
 375 bool Control::OnAccessibilityActivated()
 376 {
 377   if( Toolkit::KeyboardFocusManager::Get().SetCurrentFocusActor( Self() ) )
 378   {
 379     return OnKeyboardEnter();
 380   }
 381   return false;
 382 }
 383
 384 bool Control::OnKeyboardEnter()
 385 {
 386   return false; // Keyboard enter is not handled by default
 387 }
 388
 389 bool Control::OnAccessibilityPan(PanGesture gesture)
 390 {
 391   return false; // Accessibility pan gesture is not handled by default
 392 }
 393
 394 bool Control::OnAccessibilityValueChange(bool isIncrease)
 395 {
 396   return false; // Accessibility value change action is not handled by default
 397 }
 398
 399 bool Control::OnAccessibilityZoom()
 400 {
 401   return false; // Accessibility zoom action is not handled by default
 402 }
 403
 404 Actor Control::GetNextKeyboardFocusableActor(Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 405 {
 406   return Actor();
 407 }
 408
 409 void Control::OnKeyboardFocusChangeCommitted(Actor commitedFocusableActor)
 410 {
 411 }
 412
 413 Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
 414 {
 415   return mImpl->mKeyEventSignal;
 416 }
 417
 418 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusGainedSignal()
 419 {
 420   return mImpl->mKeyInputFocusGainedSignal;
 421 }
 422
 423 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusLostSignal()
 424 {
 425   return mImpl->mKeyInputFocusLostSignal;
 426 }
 427
 428 bool Control::EmitKeyEventSignal(const KeyEvent& event)
 429 {
 430   // Guard against destruction during signal emission
 431   Dali::Toolkit::Control handle(GetOwner());
 432
 433   bool consumed = false;
 434
 435   consumed = mImpl->FilterKeyEvent(event);
 436
 437   // signals are allocated dynamically when someone connects
 438   if(!consumed && !mImpl->mKeyEventSignal.Empty())
 439   {
 440     consumed = mImpl->mKeyEventSignal.Emit(handle, event);
 441   }
 442
 443   if(!consumed)
 444   {
 445     // Notification for derived classes
 446     consumed = OnKeyEvent(event);
 447   }
 448
 449   return consumed;
 450 }
 451
 452 Control::Control(ControlBehaviour behaviourFlags)
 453 : CustomActorImpl(static_cast<ActorFlags>(behaviourFlags)),
 454   mImpl(new Impl(*this))
 455 {
 456   mImpl->mFlags = behaviourFlags;
 457 }
 458
 459 Control::~Control()
 460 {
 461   delete mImpl;
 462 }
 463
 464 void Control::Initialize()
 465 {
 466   // Call deriving classes so initialised before styling is applied to them.
 467   OnInitialize();
 468
 469   if(!(mImpl->mFlags & DISABLE_STYLE_CHANGE_SIGNALS))
 470   {
 471     Toolkit::StyleManager styleManager = StyleManager::Get();
 472
 473     // if stylemanager is available
 474     if(styleManager)
 475     {
 476       StyleManager& styleManagerImpl = GetImpl(styleManager);
 477
 478       // Register for style changes
 479       styleManagerImpl.ControlStyleChangeSignal().Connect(this, &Control::OnStyleChange);
 480
 481       // Apply the current style
 482       styleManagerImpl.ApplyThemeStyleAtInit(Toolkit::Control(GetOwner()));
 483     }
 484   }
 485
 486   if(mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT)
 487   {
 488     SetKeyboardNavigationSupport(true);
 489   }
 490
 491   Dali::TypeInfo type;
 492   Self().GetTypeInfo( type );
 493   if (type)
 494   {
 495     auto typeName = type.GetName();
 496     DevelControl::AppendAccessibilityAttribute( Self(), "t", typeName );
 497   }
 498
 499   if (Accessibility::IsUp())
 500     mImpl->AccessibilityRegister();
 501 }
 502
 503 void Control::OnInitialize()
 504 {
 505 }
 506
 507 void Control::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 508 {
 509   // By default the control is only interested in theme (not font) changes
 510   if(styleManager && change == StyleChange::THEME_CHANGE)
 511   {
 512     GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 513     RelayoutRequest();
 514   }
 515 }
 516
 517 void Control::OnPinch(const PinchGesture& pinch)
 518 {
 519   if(!(mImpl->mStartingPinchScale))
 520   {
 521     // lazy allocate
 522     mImpl->mStartingPinchScale = new Vector3;
 523   }
 524
 525   if(pinch.GetState() == GestureState::STARTED)
 526   {
 527     *(mImpl->mStartingPinchScale) = Self().GetCurrentProperty<Vector3>(Actor::Property::SCALE);
 528   }
 529
 530   Self().SetProperty(Actor::Property::SCALE, *(mImpl->mStartingPinchScale) * pinch.GetScale());
 531 }
 532
 533 void Control::OnPan(const PanGesture& pan)
 534 {
 535 }
 536
 537 void Control::OnTap(const TapGesture& tap)
 538 {
 539 }
 540
 541 void Control::OnLongPress(const LongPressGesture& longPress)
 542 {
 543 }
 544
 545 void Control::EmitKeyInputFocusSignal(bool focusGained)
 546 {
 547   Dali::Toolkit::Control handle(GetOwner());
 548
 549   if( Accessibility::IsUp() )
 550   {
 551     auto self = mImpl->GetAccessibilityObject( Self() );
 552     self->EmitFocused( focusGained );
 553     auto parent = self->GetParent();
 554     if( parent && !self->GetStates()[Dali::Accessibility::State::MANAGES_DESCENDANTS] )
 555     {
 556       parent->EmitActiveDescendantChanged( parent, self );
 557     }
 558   }
 559
 560   if(focusGained)
 561   {
 562     // signals are allocated dynamically when someone connects
 563     if(!mImpl->mKeyInputFocusGainedSignal.Empty())
 564     {
 565       mImpl->mKeyInputFocusGainedSignal.Emit(handle);
 566     }
 567   }
 568   else
 569   {
 570     // signals are allocated dynamically when someone connects
 571     if(!mImpl->mKeyInputFocusLostSignal.Empty())
 572     {
 573       mImpl->mKeyInputFocusLostSignal.Emit(handle);
 574     }
 575   }
 576 }
 577
 578 void Control::OnSceneConnection(int depth)
 579 {
 580   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection number of registered visuals(%d)\n", mImpl->mVisuals.Size());
 581
 582   Actor self(Self());
 583
 584   for(RegisteredVisualContainer::Iterator iter = mImpl->mVisuals.Begin(); iter != mImpl->mVisuals.End(); iter++)
 585   {
 586     // Check whether the visual is empty and enabled
 587     if((*iter)->visual && (*iter)->enabled)
 588     {
 589       DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection Setting visual(%d) on scene\n", (*iter)->index);
 590       Toolkit::GetImplementation((*iter)->visual).SetOnScene(self);
 591     }
 592   }
 593
 594   // The clipping renderer is only created if required.
 595   CreateClippingRenderer(*this);
 596
 597   // Request to be laid out when the control is connected to the Scene.
 598   // Signal that a Relayout may be needed
 599   if( Accessibility::IsUp() )
 600   {
 601     mImpl->AccessibilityRegister();
 602   }
 603 }
 604
 605 void Control::OnSceneDisconnection()
 606 {
 607   if( Accessibility::IsUp() )
 608   {
 609     mImpl->AccessibilityDeregister();
 610   }
 611   mImpl->OnSceneDisconnection();
 612 }
 613
 614 void Control::OnKeyInputFocusGained()
 615 {
 616   EmitKeyInputFocusSignal(true);
 617 }
 618
 619 void Control::OnKeyInputFocusLost()
 620 {
 621   EmitKeyInputFocusSignal(false);
 622 }
 623
 624 void Control::OnChildAdd(Actor& child)
 625 {
 626 }
 627
 628 void Control::OnChildRemove(Actor& child)
 629 {
 630 }
 631
 632 void Control::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 633 {
 634   // If the clipping mode has been set, we may need to create a renderer.
 635   // Only do this if we are already on-stage as the OnSceneConnection will handle the off-stage clipping controls.
 636   switch( index )
 637   {
 638     case Actor::Property::CLIPPING_MODE:
 639     {
 640       if( Self().GetProperty< bool >( Actor::Property::CONNECTED_TO_SCENE ))
 641       {
 642         // Note: This method will handle whether creation of the renderer is required.
 643         CreateClippingRenderer( *this );
 644       }
 645       break;
 646     }
 647     case Actor::Property::VISIBLE:
 648     {
 649       if( Dali::Accessibility::IsUp() )
 650       {
 651         Dali::Accessibility::Accessible::Get(Self())->EmitVisible( Self().GetProperty( Actor::Property::VISIBLE ).Get<bool>() );
 652       }
 653       break;
 654     }
 655     case Toolkit::DevelControl::Property::ACCESSIBILITY_ROLE:
 656     {
 657       if( Dali::Accessibility::IsUp() )
 658       {
 659         Dali::Accessibility::Accessible::Get(Self())->Emit( Dali::Accessibility::ObjectPropertyChangeEvent::ROLE );
 660       }
 661       break;
 662     }
 663   }
 664 }
 665
 666 void Control::OnSizeSet(const Vector3& targetSize)
 667 {
 668   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 669   if(visual)
 670   {
 671     Vector2 size(targetSize);
 672     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 673   }
 674 }
 675
 676 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 677 {
 678   // @todo size negotiate background to new size, animate as well?
 679 }
 680
 681 bool Control::OnKeyEvent(const KeyEvent& event)
 682 {
 683   return false; // Do not consume
 684 }
 685
 686 void Control::OnRelayout(const Vector2& size, RelayoutContainer& container)
 687 {
 688   for(unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i)
 689   {
 690     Actor   child = Self().GetChildAt(i);
 691     Vector2 newChildSize(size);
 692
 693     // When set the padding or margin on the control, child should be resized and repositioned.
 694     if((mImpl->mPadding.start != 0) || (mImpl->mPadding.end != 0) || (mImpl->mPadding.top != 0) || (mImpl->mPadding.bottom != 0) ||
 695        (mImpl->mMargin.start != 0) || (mImpl->mMargin.end != 0) || (mImpl->mMargin.top != 0) || (mImpl->mMargin.bottom != 0))
 696     {
 697       Extents padding = mImpl->mPadding;
 698
 699       Dali::CustomActor           ownerActor(GetOwner());
 700       Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(ownerActor.GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 701
 702       if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 703       {
 704         std::swap(padding.start, padding.end);
 705       }
 706
 707       newChildSize.width  = size.width - (padding.start + padding.end);
 708       newChildSize.height = size.height - (padding.top + padding.bottom);
 709
 710       // Cannot use childs Position property as it can already have padding and margin applied on it,
 711       // so we end up cumulatively applying them over and over again.
 712       Vector2 childOffset(0.f, 0.f);
 713       childOffset.x += (mImpl->mMargin.start + padding.start);
 714       childOffset.y += (mImpl->mMargin.top + padding.top);
 715
 716       child.SetProperty(Actor::Property::POSITION, Vector2(childOffset.x, childOffset.y));
 717     }
 718     container.Add(child, newChildSize);
 719   }
 720
 721   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 722   if(visual)
 723   {
 724     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 725   }
 726 }
 727
 728 void Control::OnSetResizePolicy(ResizePolicy::Type policy, Dimension::Type dimension)
 729 {
 730 }
 731
 732 Vector3 Control::GetNaturalSize()
 733 {
 734   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::GetNaturalSize for %s\n", Self().GetProperty<std::string>(Dali::Actor::Property::NAME).c_str());
 735   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 736   if(visual)
 737   {
 738     Vector2 naturalSize;
 739     visual.GetNaturalSize(naturalSize);
 740     naturalSize.width += (mImpl->mPadding.start + mImpl->mPadding.end);
 741     naturalSize.height += (mImpl->mPadding.top + mImpl->mPadding.bottom);
 742     return Vector3(naturalSize);
 743   }
 744   return Vector3::ZERO;
 745 }
 746
 747 float Control::CalculateChildSize(const Dali::Actor& child, Dimension::Type dimension)
 748 {
 749   return CalculateChildSizeBase(child, dimension);
 750 }
 751
 752 float Control::GetHeightForWidth(float width)
 753 {
 754   return GetHeightForWidthBase(width);
 755 }
 756
 757 float Control::GetWidthForHeight(float height)
 758 {
 759   return GetWidthForHeightBase(height);
 760 }
 761
 762 bool Control::RelayoutDependentOnChildren(Dimension::Type dimension)
 763 {
 764   return RelayoutDependentOnChildrenBase(dimension);
 765 }
 766
 767 void Control::OnCalculateRelayoutSize(Dimension::Type dimension)
 768 {
 769 }
 770
 771 void Control::OnLayoutNegotiated(float size, Dimension::Type dimension)
 772 {
 773 }
 774
 775 void Control::SignalConnected(SlotObserver* slotObserver, CallbackBase* callback)
 776 {
 777   mImpl->SignalConnected(slotObserver, callback);
 778 }
 779
 780 void Control::SignalDisconnected(SlotObserver* slotObserver, CallbackBase* callback)
 781 {
 782   mImpl->SignalDisconnected(slotObserver, callback);
 783 }
 784
 785 Control& GetImplementation(Dali::Toolkit::Control& handle)
 786 {
 787   CustomActorImpl& customInterface = handle.GetImplementation();
 788   // downcast to control
 789   Control& impl = dynamic_cast<Internal::Control&>(customInterface);
 790   return impl;
 791 }
 792
 793 const Control& GetImplementation(const Dali::Toolkit::Control& handle)
 794 {
 795   const CustomActorImpl& customInterface = handle.GetImplementation();
 796   // downcast to control
 797   const Control& impl = dynamic_cast<const Internal::Control&>(customInterface);
 798   return impl;
 799 }
 800
 801 } // namespace Internal
 802
 803 } // namespace Toolkit
 804
 805 } // namespace Dali