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

   1 /*
   2  * Copyright (c) 2021 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/actors/actor-devel.h>
  23 #include <dali/devel-api/common/stage.h>
  24 #include <dali/devel-api/scripting/scripting.h>
  25 #include <dali/integration-api/debug.h>
  26 #include <dali/public-api/animation/constraint.h>
  27 #include <dali/public-api/object/type-info.h>
  28 #include <dali/public-api/object/type-registry-helper.h>
  29 #include <dali/public-api/size-negotiation/relayout-container.h>
  30 #include <cstring> // for strcmp
  31 #include <limits>
  32 #include <stack>
  33 #include <typeinfo>
  34
  35 // INTERNAL INCLUDES
  36 #include <dali-toolkit/dali-toolkit.h>
  37 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  38 #include <dali-toolkit/devel-api/controls/control-devel.h>
  39 #include <dali-toolkit/devel-api/focus-manager/keyinput-focus-manager.h>
  40 #include <dali-toolkit/devel-api/visuals/color-visual-actions-devel.h>
  41 #include <dali-toolkit/devel-api/visuals/color-visual-properties-devel.h>
  42 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
  43 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  44 #include <dali-toolkit/internal/visuals/color/color-visual.h>
  45 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
  46 #include <dali-toolkit/public-api/align-enumerations.h>
  47 #include <dali-toolkit/public-api/controls/control.h>
  48 #include <dali-toolkit/public-api/controls/image-view/image-view.h>
  49 #include <dali-toolkit/public-api/focus-manager/keyboard-focus-manager.h>
  50 #include <dali-toolkit/public-api/styling/style-manager.h>
  51 #include <dali-toolkit/public-api/visuals/color-visual-properties.h>
  52 #include <dali-toolkit/public-api/visuals/visual-properties.h>
  53
  54 namespace Dali
  55 {
  56 namespace Toolkit
  57 {
  58 namespace Internal
  59 {
  60 namespace
  61 {
  62 #if defined(DEBUG_ENABLED)
  63 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_CONTROL_VISUALS");
  64 #endif
  65
  66 /**
  67  * @brief Creates a clipping renderer if required.
  68  * (EG. If no renders exist and clipping is enabled).
  69  * @param[in] controlImpl The control implementation.
  70  */
  71 void CreateClippingRenderer(Control& controlImpl)
  72 {
  73   // We want to add a transparent background if we do not have one for clipping.
  74   Actor self(controlImpl.Self());
  75   int   clippingMode = ClippingMode::DISABLED;
  76   if(self.GetProperty(Actor::Property::CLIPPING_MODE).Get(clippingMode))
  77   {
  78     Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(controlImpl);
  79
  80     if(clippingMode == ClippingMode::CLIP_CHILDREN && controlDataImpl.mVisuals.Empty() && self.GetRendererCount() == 0u)
  81     {
  82       controlImpl.SetBackgroundColor(Color::TRANSPARENT);
  83     }
  84   }
  85 }
  86
  87 } // unnamed namespace
  88
  89 Toolkit::Control Control::New()
  90 {
  91   // Create the implementation, temporarily owned on stack
  92   IntrusivePtr<Control> controlImpl = new Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT));
  93
  94   // Pass ownership to handle
  95   Toolkit::Control handle(*controlImpl);
  96
  97   // Second-phase init of the implementation
  98   // This can only be done after the CustomActor connection has been made...
  99   controlImpl->Initialize();
 100
 101   return handle;
 102 }
 103
 104 void Control::SetStyleName(const std::string& styleName)
 105 {
 106   if(styleName != mImpl->mStyleName)
 107   {
 108     mImpl->mStyleName = styleName;
 109
 110     // Apply new style, if stylemanager is available
 111     Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
 112     if(styleManager)
 113     {
 114       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 115     }
 116   }
 117 }
 118
 119 const std::string& Control::GetStyleName() const
 120 {
 121   return mImpl->mStyleName;
 122 }
 123
 124 void Control::SetBackgroundColor(const Vector4& color)
 125 {
 126   mImpl->mBackgroundColor = color;
 127
 128   Property::Map map;
 129   map[Toolkit::Visual::Property::TYPE]           = Toolkit::Visual::COLOR;
 130   map[Toolkit::ColorVisual::Property::MIX_COLOR] = color;
 131
 132   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 133   if(visual && visual.GetType() == Toolkit::Visual::COLOR)
 134   {
 135     // Update background color only
 136     mImpl->DoAction(Toolkit::Control::Property::BACKGROUND, DevelColorVisual::Action::UPDATE_PROPERTY, map);
 137     return;
 138   }
 139
 140   SetBackground(map);
 141 }
 142
 143 void Control::SetBackground(const Property::Map& map)
 144 {
 145   Toolkit::Visual::Base visual = Toolkit::VisualFactory::Get().CreateVisual(map);
 146   visual.SetName("background");
 147   if(visual)
 148   {
 149     mImpl->RegisterVisual(Toolkit::Control::Property::BACKGROUND, visual, DepthIndex::BACKGROUND);
 150
 151     // Trigger a size negotiation request that may be needed by the new visual to relayout its contents.
 152     RelayoutRequest();
 153   }
 154 }
 155
 156 void Control::ClearBackground()
 157 {
 158   mImpl->UnregisterVisual(Toolkit::Control::Property::BACKGROUND);
 159   mImpl->mBackgroundColor = Color::TRANSPARENT;
 160
 161   // Trigger a size negotiation request that may be needed when unregistering a visual.
 162   RelayoutRequest();
 163 }
 164
 165 void Control::EnableGestureDetection(GestureType::Value type)
 166 {
 167   if((type & GestureType::PINCH) && !mImpl->mPinchGestureDetector)
 168   {
 169     mImpl->mPinchGestureDetector = PinchGestureDetector::New();
 170     mImpl->mPinchGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PinchDetected);
 171     mImpl->mPinchGestureDetector.Attach(Self());
 172   }
 173
 174   if((type & GestureType::PAN) && !mImpl->mPanGestureDetector)
 175   {
 176     mImpl->mPanGestureDetector = PanGestureDetector::New();
 177     mImpl->mPanGestureDetector.SetMaximumTouchesRequired(2);
 178     mImpl->mPanGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PanDetected);
 179     mImpl->mPanGestureDetector.Attach(Self());
 180   }
 181
 182   if((type & GestureType::TAP) && !mImpl->mTapGestureDetector)
 183   {
 184     mImpl->mTapGestureDetector = TapGestureDetector::New();
 185     mImpl->mTapGestureDetector.DetectedSignal().Connect(mImpl, &Impl::TapDetected);
 186     mImpl->mTapGestureDetector.Attach(Self());
 187   }
 188
 189   if((type & GestureType::LONG_PRESS) && !mImpl->mLongPressGestureDetector)
 190   {
 191     mImpl->mLongPressGestureDetector = LongPressGestureDetector::New();
 192     mImpl->mLongPressGestureDetector.DetectedSignal().Connect(mImpl, &Impl::LongPressDetected);
 193     mImpl->mLongPressGestureDetector.Attach(Self());
 194   }
 195 }
 196
 197 void Control::DisableGestureDetection(GestureType::Value type)
 198 {
 199   if((type & GestureType::PINCH) && mImpl->mPinchGestureDetector)
 200   {
 201     mImpl->mPinchGestureDetector.Detach(Self());
 202     mImpl->mPinchGestureDetector.Reset();
 203   }
 204
 205   if((type & GestureType::PAN) && mImpl->mPanGestureDetector)
 206   {
 207     mImpl->mPanGestureDetector.Detach(Self());
 208     mImpl->mPanGestureDetector.Reset();
 209   }
 210
 211   if((type & GestureType::TAP) && mImpl->mTapGestureDetector)
 212   {
 213     mImpl->mTapGestureDetector.Detach(Self());
 214     mImpl->mTapGestureDetector.Reset();
 215   }
 216
 217   if((type & GestureType::LONG_PRESS) && mImpl->mLongPressGestureDetector)
 218   {
 219     mImpl->mLongPressGestureDetector.Detach(Self());
 220     mImpl->mLongPressGestureDetector.Reset();
 221   }
 222 }
 223
 224 PinchGestureDetector Control::GetPinchGestureDetector() const
 225 {
 226   return mImpl->mPinchGestureDetector;
 227 }
 228
 229 PanGestureDetector Control::GetPanGestureDetector() const
 230 {
 231   return mImpl->mPanGestureDetector;
 232 }
 233
 234 TapGestureDetector Control::GetTapGestureDetector() const
 235 {
 236   return mImpl->mTapGestureDetector;
 237 }
 238
 239 LongPressGestureDetector Control::GetLongPressGestureDetector() const
 240 {
 241   return mImpl->mLongPressGestureDetector;
 242 }
 243
 244 void Control::SetKeyboardNavigationSupport(bool isSupported)
 245 {
 246   mImpl->mIsKeyboardNavigationSupported = isSupported;
 247 }
 248
 249 bool Control::IsKeyboardNavigationSupported()
 250 {
 251   return mImpl->mIsKeyboardNavigationSupported;
 252 }
 253
 254 void Control::SetKeyInputFocus()
 255 {
 256   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 257   {
 258     Toolkit::KeyInputFocusManager::Get().SetFocus(Toolkit::Control::DownCast(Self()));
 259   }
 260 }
 261
 262 bool Control::HasKeyInputFocus()
 263 {
 264   bool result = false;
 265   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 266   {
 267     Toolkit::Control control = Toolkit::KeyInputFocusManager::Get().GetCurrentFocusControl();
 268     if(Self() == control)
 269     {
 270       result = true;
 271     }
 272   }
 273   return result;
 274 }
 275
 276 void Control::ClearKeyInputFocus()
 277 {
 278   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 279   {
 280     Toolkit::KeyInputFocusManager::Get().RemoveFocus(Toolkit::Control::DownCast(Self()));
 281   }
 282 }
 283
 284 void Control::SetAsKeyboardFocusGroup(bool isFocusGroup)
 285 {
 286   mImpl->mIsKeyboardFocusGroup = isFocusGroup;
 287
 288   // The following line will be removed when the deprecated API in KeyboardFocusManager is deleted
 289   Toolkit::KeyboardFocusManager::Get().SetAsFocusGroup(Self(), isFocusGroup);
 290 }
 291
 292 bool Control::IsKeyboardFocusGroup()
 293 {
 294   return Toolkit::KeyboardFocusManager::Get().IsFocusGroup(Self());
 295 }
 296
 297 void Control::AccessibilityActivate()
 298 {
 299   // Inform deriving classes
 300   OnAccessibilityActivated();
 301 }
 302
 303 void Control::KeyboardEnter()
 304 {
 305   // Inform deriving classes
 306   OnKeyboardEnter();
 307 }
 308
 309 bool Control::OnAccessibilityActivated()
 310 {
 311   if(Toolkit::KeyboardFocusManager::Get().SetCurrentFocusActor(Self()))
 312   {
 313     return OnKeyboardEnter();
 314   }
 315   return false;
 316 }
 317
 318 bool Control::OnKeyboardEnter()
 319 {
 320   return false; // Keyboard enter is not handled by default
 321 }
 322
 323 bool Control::OnAccessibilityPan(PanGesture gesture)
 324 {
 325   return false; // Accessibility pan gesture is not handled by default
 326 }
 327
 328 bool Control::OnAccessibilityValueChange(bool isIncrease)
 329 {
 330   return false; // Accessibility value change action is not handled by default
 331 }
 332
 333 bool Control::OnAccessibilityZoom()
 334 {
 335   return false; // Accessibility zoom action is not handled by default
 336 }
 337
 338 Actor Control::GetNextKeyboardFocusableActor(Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 339 {
 340   return Actor();
 341 }
 342
 343 void Control::OnKeyboardFocusChangeCommitted(Actor commitedFocusableActor)
 344 {
 345 }
 346
 347 Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
 348 {
 349   return mImpl->mKeyEventSignal;
 350 }
 351
 352 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusGainedSignal()
 353 {
 354   return mImpl->mKeyInputFocusGainedSignal;
 355 }
 356
 357 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusLostSignal()
 358 {
 359   return mImpl->mKeyInputFocusLostSignal;
 360 }
 361
 362 bool Control::EmitKeyEventSignal(const KeyEvent& event)
 363 {
 364   // Guard against destruction during signal emission
 365   Dali::Toolkit::Control handle(GetOwner());
 366
 367   bool consumed = false;
 368
 369   consumed = mImpl->FilterKeyEvent(event);
 370
 371   // signals are allocated dynamically when someone connects
 372   if(!consumed && !mImpl->mKeyEventSignal.Empty())
 373   {
 374     consumed = mImpl->mKeyEventSignal.Emit(handle, event);
 375   }
 376
 377   if(!consumed)
 378   {
 379     // Notification for derived classes
 380     consumed = OnKeyEvent(event);
 381   }
 382
 383   return consumed;
 384 }
 385
 386 Control::Control(ControlBehaviour behaviourFlags)
 387 : CustomActorImpl(static_cast<ActorFlags>(behaviourFlags)),
 388   mImpl(new Impl(*this))
 389 {
 390   mImpl->mFlags = behaviourFlags;
 391 }
 392
 393 Control::~Control()
 394 {
 395   delete mImpl;
 396 }
 397
 398 void Control::Initialize()
 399 {
 400   // Call deriving classes so initialised before styling is applied to them.
 401   OnInitialize();
 402
 403   if(!(mImpl->mFlags & DISABLE_STYLE_CHANGE_SIGNALS))
 404   {
 405     Toolkit::StyleManager styleManager = StyleManager::Get();
 406
 407     // if stylemanager is available
 408     if(styleManager)
 409     {
 410       StyleManager& styleManagerImpl = GetImpl(styleManager);
 411
 412       // Register for style changes
 413       styleManagerImpl.ControlStyleChangeSignal().Connect(this, &Control::OnStyleChange);
 414
 415       // Apply the current style
 416       styleManagerImpl.ApplyThemeStyleAtInit(Toolkit::Control(GetOwner()));
 417     }
 418   }
 419
 420   if(mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT)
 421   {
 422     SetKeyboardNavigationSupport(true);
 423   }
 424
 425   Dali::TypeInfo type;
 426   Self().GetTypeInfo(type);
 427   if(type)
 428   {
 429     auto typeName = type.GetName();
 430     DevelControl::AppendAccessibilityAttribute(Self(), "class", typeName);
 431   }
 432 }
 433
 434 void Control::OnInitialize()
 435 {
 436 }
 437
 438 void Control::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 439 {
 440   // By default the control is only interested in theme (not font) changes
 441   if(styleManager && change == StyleChange::THEME_CHANGE)
 442   {
 443     GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 444     RelayoutRequest();
 445   }
 446 }
 447
 448 void Control::OnPinch(const PinchGesture& pinch)
 449 {
 450   if(!(mImpl->mStartingPinchScale))
 451   {
 452     // lazy allocate
 453     mImpl->mStartingPinchScale = new Vector3;
 454   }
 455
 456   if(pinch.GetState() == GestureState::STARTED)
 457   {
 458     *(mImpl->mStartingPinchScale) = Self().GetCurrentProperty<Vector3>(Actor::Property::SCALE);
 459   }
 460
 461   Self().SetProperty(Actor::Property::SCALE, *(mImpl->mStartingPinchScale) * pinch.GetScale());
 462 }
 463
 464 void Control::OnPan(const PanGesture& pan)
 465 {
 466 }
 467
 468 void Control::OnTap(const TapGesture& tap)
 469 {
 470 }
 471
 472 void Control::OnLongPress(const LongPressGesture& longPress)
 473 {
 474 }
 475
 476 void Control::EmitKeyInputFocusSignal(bool focusGained)
 477 {
 478   Dali::Toolkit::Control handle(GetOwner());
 479
 480   if(Accessibility::IsUp())
 481   {
 482     auto self = mImpl->GetAccessibilityObject(Self());
 483     self->EmitFocused(focusGained);
 484     auto parent = self->GetParent();
 485     if(parent && !self->GetStates()[Dali::Accessibility::State::MANAGES_DESCENDANTS])
 486     {
 487       parent->EmitActiveDescendantChanged(parent, self);
 488     }
 489   }
 490
 491   if(focusGained)
 492   {
 493     // signals are allocated dynamically when someone connects
 494     if(!mImpl->mKeyInputFocusGainedSignal.Empty())
 495     {
 496       mImpl->mKeyInputFocusGainedSignal.Emit(handle);
 497     }
 498   }
 499   else
 500   {
 501     // signals are allocated dynamically when someone connects
 502     if(!mImpl->mKeyInputFocusLostSignal.Empty())
 503     {
 504       mImpl->mKeyInputFocusLostSignal.Emit(handle);
 505     }
 506   }
 507 }
 508
 509 void Control::OnSceneConnection(int depth)
 510 {
 511   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection number of registered visuals(%d)\n", mImpl->mVisuals.Size());
 512
 513   Actor self(Self());
 514
 515   for(RegisteredVisualContainer::Iterator iter = mImpl->mVisuals.Begin(); iter != mImpl->mVisuals.End(); iter++)
 516   {
 517     // Check whether the visual is empty and enabled
 518     if((*iter)->visual && (*iter)->enabled)
 519     {
 520       DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection Setting visual(%d) on scene\n", (*iter)->index);
 521       Toolkit::GetImplementation((*iter)->visual).SetOnScene(self);
 522     }
 523   }
 524
 525   // The clipping renderer is only created if required.
 526   CreateClippingRenderer(*this);
 527
 528   mImpl->AccessibilityRegister();
 529 }
 530
 531 void Control::OnSceneDisconnection()
 532 {
 533   mImpl->AccessibilityDeregister(true);
 534   mImpl->OnSceneDisconnection();
 535 }
 536
 537 void Control::OnKeyInputFocusGained()
 538 {
 539   EmitKeyInputFocusSignal(true);
 540 }
 541
 542 void Control::OnKeyInputFocusLost()
 543 {
 544   EmitKeyInputFocusSignal(false);
 545 }
 546
 547 void Control::OnChildAdd(Actor& child)
 548 {
 549 }
 550
 551 void Control::OnChildRemove(Actor& child)
 552 {
 553 }
 554
 555 void Control::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 556 {
 557   // If the clipping mode has been set, we may need to create a renderer.
 558   // Only do this if we are already on-stage as the OnSceneConnection will handle the off-stage clipping controls.
 559   switch(index)
 560   {
 561     case Actor::Property::CLIPPING_MODE:
 562     {
 563       if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 564       {
 565         // Note: This method will handle whether creation of the renderer is required.
 566         CreateClippingRenderer(*this);
 567       }
 568       break;
 569     }
 570     case Actor::Property::VISIBLE:
 571     {
 572       if(Dali::Accessibility::IsUp())
 573       {
 574         Dali::Accessibility::Accessible::Get(Self())->EmitVisible(Self().GetProperty(Actor::Property::VISIBLE).Get<bool>());
 575       }
 576       break;
 577     }
 578     case Toolkit::DevelControl::Property::ACCESSIBILITY_ROLE:
 579     {
 580       if(Dali::Accessibility::IsUp())
 581       {
 582         Dali::Accessibility::Accessible::Get(Self())->Emit(Dali::Accessibility::ObjectPropertyChangeEvent::ROLE);
 583       }
 584       break;
 585     }
 586   }
 587 }
 588
 589 void Control::OnSizeSet(const Vector3& targetSize)
 590 {
 591   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 592   if(visual)
 593   {
 594     Vector2 size(targetSize);
 595     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 596   }
 597 }
 598
 599 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 600 {
 601   // @todo size negotiate background to new size, animate as well?
 602 }
 603
 604 bool Control::OnKeyEvent(const KeyEvent& event)
 605 {
 606   return false; // Do not consume
 607 }
 608
 609 void Control::OnRelayout(const Vector2& size, RelayoutContainer& container)
 610 {
 611   for(unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i)
 612   {
 613     Actor   child = Self().GetChildAt(i);
 614     Vector2 newChildSize(size);
 615
 616     // When set the padding or margin on the control, child should be resized and repositioned.
 617     if((mImpl->mPadding.start != 0) || (mImpl->mPadding.end != 0) || (mImpl->mPadding.top != 0) || (mImpl->mPadding.bottom != 0) ||
 618        (mImpl->mMargin.start != 0) || (mImpl->mMargin.end != 0) || (mImpl->mMargin.top != 0) || (mImpl->mMargin.bottom != 0))
 619     {
 620       Extents padding = mImpl->mPadding;
 621
 622       Dali::CustomActor           ownerActor(GetOwner());
 623       Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(ownerActor.GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 624
 625       if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 626       {
 627         std::swap(padding.start, padding.end);
 628       }
 629
 630       newChildSize.width  = size.width - (padding.start + padding.end);
 631       newChildSize.height = size.height - (padding.top + padding.bottom);
 632
 633       // Cannot use childs Position property as it can already have padding and margin applied on it,
 634       // so we end up cumulatively applying them over and over again.
 635       Vector2 childOffset(0.f, 0.f);
 636       childOffset.x += (mImpl->mMargin.start + padding.start);
 637       childOffset.y += (mImpl->mMargin.top + padding.top);
 638
 639       child.SetProperty(Actor::Property::POSITION, Vector2(childOffset.x, childOffset.y));
 640     }
 641     container.Add(child, newChildSize);
 642   }
 643
 644   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 645   if(visual)
 646   {
 647     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 648   }
 649 }
 650
 651 void Control::OnSetResizePolicy(ResizePolicy::Type policy, Dimension::Type dimension)
 652 {
 653 }
 654
 655 Vector3 Control::GetNaturalSize()
 656 {
 657   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::GetNaturalSize for %s\n", Self().GetProperty<std::string>(Dali::Actor::Property::NAME).c_str());
 658   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 659   if(visual)
 660   {
 661     Vector2 naturalSize;
 662     visual.GetNaturalSize(naturalSize);
 663     naturalSize.width += (mImpl->mPadding.start + mImpl->mPadding.end);
 664     naturalSize.height += (mImpl->mPadding.top + mImpl->mPadding.bottom);
 665     return Vector3(naturalSize);
 666   }
 667   return Vector3::ZERO;
 668 }
 669
 670 float Control::CalculateChildSize(const Dali::Actor& child, Dimension::Type dimension)
 671 {
 672   return CalculateChildSizeBase(child, dimension);
 673 }
 674
 675 float Control::GetHeightForWidth(float width)
 676 {
 677   return GetHeightForWidthBase(width);
 678 }
 679
 680 float Control::GetWidthForHeight(float height)
 681 {
 682   return GetWidthForHeightBase(height);
 683 }
 684
 685 bool Control::RelayoutDependentOnChildren(Dimension::Type dimension)
 686 {
 687   return RelayoutDependentOnChildrenBase(dimension);
 688 }
 689
 690 void Control::OnCalculateRelayoutSize(Dimension::Type dimension)
 691 {
 692 }
 693
 694 void Control::OnLayoutNegotiated(float size, Dimension::Type dimension)
 695 {
 696 }
 697
 698 void Control::SignalConnected(SlotObserver* slotObserver, CallbackBase* callback)
 699 {
 700   mImpl->SignalConnected(slotObserver, callback);
 701 }
 702
 703 void Control::SignalDisconnected(SlotObserver* slotObserver, CallbackBase* callback)
 704 {
 705   mImpl->SignalDisconnected(slotObserver, callback);
 706 }
 707
 708 Control& GetImplementation(Dali::Toolkit::Control& handle)
 709 {
 710   CustomActorImpl& customInterface = handle.GetImplementation();
 711   // downcast to control
 712   Control& impl = dynamic_cast<Internal::Control&>(customInterface);
 713   return impl;
 714 }
 715
 716 const Control& GetImplementation(const Dali::Toolkit::Control& handle)
 717 {
 718   const CustomActorImpl& customInterface = handle.GetImplementation();
 719   // downcast to control
 720   const Control& impl = dynamic_cast<const Internal::Control&>(customInterface);
 721   return impl;
 722 }
 723
 724 } // namespace Internal
 725
 726 } // namespace Toolkit
 727
 728 } // namespace Dali