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

   1 /*
   2  * Copyright (c) 2024 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/math/math-utils.h>
  28 #include <dali/public-api/size-negotiation/relayout-container.h>
  29 #include <cstring> // for strcmp
  30 #include <limits>
  31 #include <stack>
  32
  33 // INTERNAL INCLUDES
  34 #include <dali-toolkit/dali-toolkit.h>
  35 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  36 #include <dali-toolkit/devel-api/controls/control-devel.h>
  37 #include <dali-toolkit/devel-api/focus-manager/keyinput-focus-manager.h>
  38 #include <dali-toolkit/devel-api/visuals/color-visual-properties-devel.h>
  39 #include <dali-toolkit/devel-api/visuals/visual-actions-devel.h>
  40 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
  41 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  42 #include <dali-toolkit/internal/visuals/color/color-visual.h>
  43 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
  44 #include <dali-toolkit/public-api/align-enumerations.h>
  45 #include <dali-toolkit/public-api/controls/control.h>
  46 #include <dali-toolkit/public-api/controls/image-view/image-view.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
  52 namespace Dali
  53 {
  54 namespace Toolkit
  55 {
  56 namespace Internal
  57 {
  58 namespace
  59 {
  60 #if defined(DEBUG_ENABLED)
  61 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_CONTROL_VISUALS");
  62 #endif
  63
  64 /**
  65  * @brief Creates a clipping renderer if required.
  66  * (EG. If no renders exist and clipping is enabled).
  67  * @param[in] controlImpl The control implementation.
  68  */
  69 void CreateClippingRenderer(Control& controlImpl)
  70 {
  71   // We want to add a transparent background if we do not have one for clipping.
  72   Actor self(controlImpl.Self());
  73   int   clippingMode = ClippingMode::DISABLED;
  74   if(self.GetProperty(Actor::Property::CLIPPING_MODE).Get(clippingMode))
  75   {
  76     Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(controlImpl);
  77
  78     if(clippingMode == ClippingMode::CLIP_CHILDREN && controlDataImpl.mVisuals.Empty() && self.GetRendererCount() == 0u)
  79     {
  80       controlImpl.SetBackgroundColor(Color::TRANSPARENT);
  81     }
  82   }
  83 }
  84
  85 } // unnamed namespace
  86
  87 Toolkit::Control Control::New()
  88 {
  89   return New(ControlBehaviour::CONTROL_BEHAVIOUR_DEFAULT);
  90 }
  91
  92 Toolkit::Control Control::New(ControlBehaviour additionalBehaviour)
  93 {
  94   // Create the implementation, temporarily owned on stack
  95   IntrusivePtr<Control> controlImpl = new Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT | additionalBehaviour));
  96
  97   // Pass ownership to handle
  98   Toolkit::Control handle(*controlImpl);
  99
 100   // Second-phase init of the implementation
 101   // This can only be done after the CustomActor connection has been made...
 102   controlImpl->Initialize();
 103
 104   return handle;
 105 }
 106
 107 void Control::SetStyleName(const std::string& styleName)
 108 {
 109   if(styleName != mImpl->mStyleName)
 110   {
 111     mImpl->mStyleName = styleName;
 112
 113     // Apply new style, if stylemanager is available
 114     Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
 115     if(styleManager)
 116     {
 117       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 118     }
 119   }
 120 }
 121
 122 const std::string& Control::GetStyleName() const
 123 {
 124   return mImpl->mStyleName;
 125 }
 126
 127 void Control::SetBackgroundColor(const Vector4& color)
 128 {
 129   mImpl->mBackgroundColor = color;
 130
 131   Property::Map map;
 132   map[Toolkit::Visual::Property::TYPE]           = Toolkit::Visual::COLOR;
 133   map[Toolkit::ColorVisual::Property::MIX_COLOR] = color;
 134
 135   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 136   if(visual && visual.GetType() == Toolkit::Visual::COLOR)
 137   {
 138     // Update background color only
 139     mImpl->DoAction(Toolkit::Control::Property::BACKGROUND, DevelVisual::Action::UPDATE_PROPERTY, map);
 140     return;
 141   }
 142
 143   SetBackground(map);
 144 }
 145
 146 void Control::SetBackground(const Property::Map& map)
 147 {
 148   Toolkit::Visual::Base visual = Toolkit::VisualFactory::Get().CreateVisual(map);
 149   visual.SetName("background");
 150   if(visual)
 151   {
 152     mImpl->RegisterVisual(Toolkit::Control::Property::BACKGROUND, visual, DepthIndex::BACKGROUND);
 153
 154     // Trigger a size negotiation request that may be needed by the new visual to relayout its contents.
 155     RelayoutRequest();
 156   }
 157 }
 158
 159 void Control::ClearBackground()
 160 {
 161   mImpl->UnregisterVisual(Toolkit::Control::Property::BACKGROUND);
 162   mImpl->mBackgroundColor = Color::TRANSPARENT;
 163
 164   // Trigger a size negotiation request that may be needed when unregistering a visual.
 165   RelayoutRequest();
 166 }
 167
 168 void Control::SetResourceReady()
 169 {
 170   Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
 171   controlDataImpl.ResourceReady();
 172 }
 173
 174 Toolkit::DevelControl::ControlAccessible* Control::GetAccessibleObject()
 175 {
 176   return mImpl->GetAccessibleObject();
 177 }
 178
 179 void Control::EnableGestureDetection(GestureType::Value type)
 180 {
 181   if((type & GestureType::PINCH) && !mImpl->mPinchGestureDetector)
 182   {
 183     mImpl->mPinchGestureDetector = PinchGestureDetector::New();
 184     mImpl->mPinchGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PinchDetected);
 185     mImpl->mPinchGestureDetector.Attach(Self());
 186   }
 187
 188   if((type & GestureType::PAN) && !mImpl->mPanGestureDetector)
 189   {
 190     mImpl->mPanGestureDetector = PanGestureDetector::New();
 191     mImpl->mPanGestureDetector.SetMaximumTouchesRequired(2);
 192     mImpl->mPanGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PanDetected);
 193     mImpl->mPanGestureDetector.Attach(Self());
 194   }
 195
 196   if((type & GestureType::TAP) && !mImpl->mTapGestureDetector)
 197   {
 198     mImpl->mTapGestureDetector = TapGestureDetector::New();
 199     mImpl->mTapGestureDetector.DetectedSignal().Connect(mImpl, &Impl::TapDetected);
 200     mImpl->mTapGestureDetector.Attach(Self());
 201   }
 202
 203   if((type & GestureType::LONG_PRESS) && !mImpl->mLongPressGestureDetector)
 204   {
 205     mImpl->mLongPressGestureDetector = LongPressGestureDetector::New();
 206     mImpl->mLongPressGestureDetector.DetectedSignal().Connect(mImpl, &Impl::LongPressDetected);
 207     mImpl->mLongPressGestureDetector.Attach(Self());
 208   }
 209 }
 210
 211 void Control::DisableGestureDetection(GestureType::Value type)
 212 {
 213   if((type & GestureType::PINCH) && mImpl->mPinchGestureDetector)
 214   {
 215     mImpl->mPinchGestureDetector.Detach(Self());
 216     mImpl->mPinchGestureDetector.Reset();
 217   }
 218
 219   if((type & GestureType::PAN) && mImpl->mPanGestureDetector)
 220   {
 221     mImpl->mPanGestureDetector.Detach(Self());
 222     mImpl->mPanGestureDetector.Reset();
 223   }
 224
 225   if((type & GestureType::TAP) && mImpl->mTapGestureDetector)
 226   {
 227     mImpl->mTapGestureDetector.Detach(Self());
 228     mImpl->mTapGestureDetector.Reset();
 229   }
 230
 231   if((type & GestureType::LONG_PRESS) && mImpl->mLongPressGestureDetector)
 232   {
 233     mImpl->mLongPressGestureDetector.Detach(Self());
 234     mImpl->mLongPressGestureDetector.Reset();
 235   }
 236 }
 237
 238 PinchGestureDetector Control::GetPinchGestureDetector() const
 239 {
 240   return mImpl->mPinchGestureDetector;
 241 }
 242
 243 PanGestureDetector Control::GetPanGestureDetector() const
 244 {
 245   return mImpl->mPanGestureDetector;
 246 }
 247
 248 TapGestureDetector Control::GetTapGestureDetector() const
 249 {
 250   return mImpl->mTapGestureDetector;
 251 }
 252
 253 LongPressGestureDetector Control::GetLongPressGestureDetector() const
 254 {
 255   return mImpl->mLongPressGestureDetector;
 256 }
 257
 258 void Control::SetKeyboardNavigationSupport(bool isSupported)
 259 {
 260   mImpl->mIsKeyboardNavigationSupported = isSupported;
 261 }
 262
 263 bool Control::IsKeyboardNavigationSupported()
 264 {
 265   return mImpl->mIsKeyboardNavigationSupported;
 266 }
 267
 268 void Control::SetKeyInputFocus()
 269 {
 270   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 271   {
 272     Toolkit::KeyInputFocusManager::Get().SetFocus(Toolkit::Control::DownCast(Self()));
 273   }
 274 }
 275
 276 bool Control::HasKeyInputFocus()
 277 {
 278   bool result = false;
 279   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 280   {
 281     Toolkit::Control control = Toolkit::KeyInputFocusManager::Get().GetCurrentFocusControl();
 282     if(Self() == control)
 283     {
 284       result = true;
 285     }
 286   }
 287   return result;
 288 }
 289
 290 void Control::ClearKeyInputFocus()
 291 {
 292   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 293   {
 294     Toolkit::KeyInputFocusManager::Get().RemoveFocus(Toolkit::Control::DownCast(Self()));
 295   }
 296 }
 297
 298 void Control::SetAsKeyboardFocusGroup(bool isFocusGroup)
 299 {
 300   mImpl->mIsKeyboardFocusGroup = isFocusGroup;
 301
 302   // The following line will be removed when the deprecated API in KeyboardFocusManager is deleted
 303   Toolkit::KeyboardFocusManager::Get().SetAsFocusGroup(Self(), isFocusGroup);
 304 }
 305
 306 bool Control::IsKeyboardFocusGroup()
 307 {
 308   return Toolkit::KeyboardFocusManager::Get().IsFocusGroup(Self());
 309 }
 310
 311 void Control::AccessibilityActivate()
 312 {
 313   // Inform deriving classes
 314   OnAccessibilityActivated();
 315 }
 316
 317 void Control::KeyboardEnter()
 318 {
 319   // Inform deriving classes
 320   OnKeyboardEnter();
 321 }
 322
 323 bool Control::OnAccessibilityActivated()
 324 {
 325   if(Toolkit::KeyboardFocusManager::Get().SetCurrentFocusActor(Self()))
 326   {
 327     return OnKeyboardEnter();
 328   }
 329   return false;
 330 }
 331
 332 bool Control::OnKeyboardEnter()
 333 {
 334   return false; // Keyboard enter is not handled by default
 335 }
 336
 337 bool Control::OnAccessibilityPan(PanGesture gesture)
 338 {
 339   return false; // Accessibility pan gesture is not handled by default
 340 }
 341
 342 bool Control::OnAccessibilityValueChange(bool isIncrease)
 343 {
 344   return false; // Accessibility value change action is not handled by default
 345 }
 346
 347 bool Control::OnAccessibilityZoom()
 348 {
 349   return false; // Accessibility zoom action is not handled by default
 350 }
 351
 352 DevelControl::ControlAccessible* Control::CreateAccessibleObject()
 353 {
 354   return new DevelControl::ControlAccessible(Self());
 355 }
 356
 357 Actor Control::GetNextKeyboardFocusableActor(Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 358 {
 359   return Actor();
 360 }
 361
 362 void Control::OnKeyboardFocusChangeCommitted(Actor commitedFocusableActor)
 363 {
 364 }
 365
 366 Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
 367 {
 368   return mImpl->mKeyEventSignal;
 369 }
 370
 371 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusGainedSignal()
 372 {
 373   return mImpl->mKeyInputFocusGainedSignal;
 374 }
 375
 376 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusLostSignal()
 377 {
 378   return mImpl->mKeyInputFocusLostSignal;
 379 }
 380
 381 bool Control::EmitKeyEventSignal(const KeyEvent& event)
 382 {
 383   // Guard against destruction during signal emission
 384   Dali::Toolkit::Control handle(GetOwner());
 385
 386   bool consumed = false;
 387
 388   consumed = mImpl->FilterKeyEvent(event);
 389
 390   // signals are allocated dynamically when someone connects
 391   if(!consumed && !mImpl->mKeyEventSignal.Empty())
 392   {
 393     consumed = mImpl->mKeyEventSignal.Emit(handle, event);
 394   }
 395
 396   if(!consumed)
 397   {
 398     // Notification for derived classes
 399     consumed = OnKeyEvent(event);
 400   }
 401
 402   return consumed;
 403 }
 404
 405 Control::Control(ControlBehaviour behaviourFlags)
 406 : CustomActorImpl(static_cast<ActorFlags>(behaviourFlags)),
 407   mImpl(new Impl(*this))
 408 {
 409   mImpl->mFlags = behaviourFlags;
 410 }
 411
 412 Control::~Control()
 413 {
 414   delete mImpl;
 415 }
 416
 417 void Control::Initialize()
 418 {
 419   // Call deriving classes so initialised before styling is applied to them.
 420   OnInitialize();
 421
 422   if(!(mImpl->mFlags & DISABLE_STYLE_CHANGE_SIGNALS))
 423   {
 424     Toolkit::StyleManager styleManager = StyleManager::Get();
 425
 426     // if stylemanager is available
 427     if(styleManager)
 428     {
 429       StyleManager& styleManagerImpl = GetImpl(styleManager);
 430
 431       // Register for style changes
 432       styleManagerImpl.ControlStyleChangeSignal().Connect(this, &Control::OnStyleChange);
 433
 434       // Apply the current style
 435       styleManagerImpl.ApplyThemeStyleAtInit(Toolkit::Control(GetOwner()));
 436     }
 437   }
 438
 439   if(mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT)
 440   {
 441     SetKeyboardNavigationSupport(true);
 442   }
 443 }
 444
 445 void Control::OnInitialize()
 446 {
 447 }
 448
 449 bool Control::IsResourceReady() const
 450 {
 451   const Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
 452   return controlDataImpl.IsResourceReady();
 453 }
 454
 455 void Control::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 456 {
 457   // By default the control is only interested in theme (not font) changes
 458   if(styleManager && change == StyleChange::THEME_CHANGE)
 459   {
 460     GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 461     RelayoutRequest();
 462   }
 463 }
 464
 465 void Control::OnPinch(const PinchGesture& pinch)
 466 {
 467   if(!(mImpl->mStartingPinchScale))
 468   {
 469     // lazy allocate
 470     mImpl->mStartingPinchScale = new Vector3;
 471   }
 472
 473   if(pinch.GetState() == GestureState::STARTED)
 474   {
 475     *(mImpl->mStartingPinchScale) = Self().GetCurrentProperty<Vector3>(Actor::Property::SCALE);
 476   }
 477
 478   Self().SetProperty(Actor::Property::SCALE, *(mImpl->mStartingPinchScale) * pinch.GetScale());
 479 }
 480
 481 void Control::OnPan(const PanGesture& pan)
 482 {
 483 }
 484
 485 void Control::OnTap(const TapGesture& tap)
 486 {
 487 }
 488
 489 void Control::OnLongPress(const LongPressGesture& longPress)
 490 {
 491 }
 492
 493 void Control::EmitKeyInputFocusSignal(bool focusGained)
 494 {
 495   Dali::Toolkit::Control handle(GetOwner());
 496
 497   if(Accessibility::IsUp())
 498   {
 499     auto accessible = GetAccessibleObject();
 500     if(DALI_LIKELY(accessible))
 501     {
 502       accessible->EmitFocused(focusGained);
 503       auto parent = accessible->GetParent();
 504       if(parent && !accessible->GetStates()[Dali::Accessibility::State::MANAGES_DESCENDANTS])
 505       {
 506         parent->EmitActiveDescendantChanged(accessible);
 507       }
 508     }
 509   }
 510
 511   if(focusGained)
 512   {
 513     // signals are allocated dynamically when someone connects
 514     if(!mImpl->mKeyInputFocusGainedSignal.Empty())
 515     {
 516       mImpl->mKeyInputFocusGainedSignal.Emit(handle);
 517     }
 518   }
 519   else
 520   {
 521     // signals are allocated dynamically when someone connects
 522     if(!mImpl->mKeyInputFocusLostSignal.Empty())
 523     {
 524       mImpl->mKeyInputFocusLostSignal.Emit(handle);
 525     }
 526   }
 527 }
 528
 529 void Control::OnSceneConnection(int depth)
 530 {
 531   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection number of registered visuals(%d)\n", mImpl->mVisuals.Size());
 532
 533   Actor self(Self());
 534
 535   for(RegisteredVisualContainer::Iterator iter = mImpl->mVisuals.Begin(); iter != mImpl->mVisuals.End(); iter++)
 536   {
 537     // Check whether the visual is empty and enabled
 538     if((*iter)->visual && (*iter)->enabled)
 539     {
 540       DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection Setting visual(%d) on scene\n", (*iter)->index);
 541       Toolkit::GetImplementation((*iter)->visual).SetOnScene(self);
 542     }
 543   }
 544
 545   // The clipping renderer is only created if required.
 546   CreateClippingRenderer(*this);
 547 }
 548
 549 void Control::OnSceneDisconnection()
 550 {
 551   mImpl->OnSceneDisconnection();
 552 }
 553
 554 void Control::OnKeyInputFocusGained()
 555 {
 556   EmitKeyInputFocusSignal(true);
 557 }
 558
 559 void Control::OnKeyInputFocusLost()
 560 {
 561   EmitKeyInputFocusSignal(false);
 562 }
 563
 564 void Control::OnChildAdd(Actor& child)
 565 {
 566 }
 567
 568 void Control::OnChildRemove(Actor& child)
 569 {
 570 }
 571
 572 void Control::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 573 {
 574   // If the clipping mode has been set, we may need to create a renderer.
 575   // Only do this if we are already on-stage as the OnSceneConnection will handle the off-stage clipping controls.
 576   switch(index)
 577   {
 578     case Actor::Property::CLIPPING_MODE:
 579     {
 580       if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 581       {
 582         // Note: This method will handle whether creation of the renderer is required.
 583         CreateClippingRenderer(*this);
 584       }
 585       break;
 586     }
 587     case Actor::Property::VISIBLE:
 588     {
 589       auto* accessible = GetAccessibleObject();
 590       if(DALI_LIKELY(accessible))
 591       {
 592         accessible->EmitVisible(Self().GetProperty<bool>(Actor::Property::VISIBLE));
 593       }
 594       break;
 595     }
 596     case DevelActor::Property::USER_INTERACTION_ENABLED:
 597     {
 598       const bool enabled = propertyValue.Get<bool>();
 599       if(!enabled && Self() == Dali::Toolkit::KeyboardFocusManager::Get().GetCurrentFocusActor())
 600       {
 601         Dali::Toolkit::KeyboardFocusManager::Get().ClearFocus();
 602       }
 603       break;
 604     }
 605   }
 606 }
 607
 608 void Control::OnSizeSet(const Vector3& targetSize)
 609 {
 610   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 611   if(visual)
 612   {
 613     Vector2 size(targetSize);
 614     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 615   }
 616 }
 617
 618 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 619 {
 620   // @todo size negotiate background to new size, animate as well?
 621 }
 622
 623 bool Control::OnKeyEvent(const KeyEvent& event)
 624 {
 625   return false; // Do not consume
 626 }
 627
 628 void Control::OnRelayout(const Vector2& size, RelayoutContainer& container)
 629 {
 630   for(unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i)
 631   {
 632     Actor   child = Self().GetChildAt(i);
 633     Vector2 newChildSize(size);
 634
 635     // When set the padding or margin on the control, child should be resized and repositioned.
 636     if((mImpl->mPadding.start != 0) || (mImpl->mPadding.end != 0) || (mImpl->mPadding.top != 0) || (mImpl->mPadding.bottom != 0) ||
 637        (mImpl->mMargin.start != 0) || (mImpl->mMargin.end != 0) || (mImpl->mMargin.top != 0) || (mImpl->mMargin.bottom != 0))
 638     {
 639       Extents padding = mImpl->mPadding;
 640
 641       Dali::CustomActor           ownerActor(GetOwner());
 642       Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(ownerActor.GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 643
 644       if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 645       {
 646         std::swap(padding.start, padding.end);
 647       }
 648
 649       newChildSize.width  = size.width - (padding.start + padding.end);
 650       newChildSize.height = size.height - (padding.top + padding.bottom);
 651
 652       // Cannot use childs Position property as it can already have padding and margin applied on it,
 653       // so we end up cumulatively applying them over and over again.
 654       Vector2 childOffset(0.f, 0.f);
 655       childOffset.x += (mImpl->mMargin.start + padding.start);
 656       childOffset.y += (mImpl->mMargin.top + padding.top);
 657
 658       child.SetProperty(Actor::Property::POSITION, Vector2(childOffset.x, childOffset.y));
 659     }
 660     container.Add(child, newChildSize);
 661   }
 662
 663   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 664   if(visual)
 665   {
 666     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 667   }
 668 }
 669
 670 void Control::OnSetResizePolicy(ResizePolicy::Type policy, Dimension::Type dimension)
 671 {
 672 }
 673
 674 Vector3 Control::GetNaturalSize()
 675 {
 676   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::GetNaturalSize for %s\n", Self().GetProperty<std::string>(Dali::Actor::Property::NAME).c_str());
 677   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 678   if(visual)
 679   {
 680     Vector2 naturalSize;
 681     visual.GetNaturalSize(naturalSize);
 682     naturalSize.width += (mImpl->mPadding.start + mImpl->mPadding.end);
 683     naturalSize.height += (mImpl->mPadding.top + mImpl->mPadding.bottom);
 684     return Vector3(naturalSize);
 685   }
 686   return Vector3::ZERO;
 687 }
 688
 689 float Control::CalculateChildSize(const Dali::Actor& child, Dimension::Type dimension)
 690 {
 691   return CalculateChildSizeBase(child, dimension);
 692 }
 693
 694 float Control::GetHeightForWidth(float width)
 695 {
 696   return GetHeightForWidthBase(width);
 697 }
 698
 699 float Control::GetWidthForHeight(float height)
 700 {
 701   return GetWidthForHeightBase(height);
 702 }
 703
 704 bool Control::RelayoutDependentOnChildren(Dimension::Type dimension)
 705 {
 706   return RelayoutDependentOnChildrenBase(dimension);
 707 }
 708
 709 void Control::OnCalculateRelayoutSize(Dimension::Type dimension)
 710 {
 711 }
 712
 713 void Control::OnLayoutNegotiated(float size, Dimension::Type dimension)
 714 {
 715 }
 716
 717 void Control::SignalConnected(SlotObserver* slotObserver, CallbackBase* callback)
 718 {
 719   mImpl->SignalConnected(slotObserver, callback);
 720 }
 721
 722 void Control::SignalDisconnected(SlotObserver* slotObserver, CallbackBase* callback)
 723 {
 724   mImpl->SignalDisconnected(slotObserver, callback);
 725 }
 726
 727 void Control::MakeVisualTransition(Dali::Property::Map& sourcePropertyMap, Dali::Property::Map& destinationPropertyMap, Dali::Toolkit::Control source, Dali::Toolkit::Control destination, Dali::Property::Index visualIndex)
 728 {
 729   sourcePropertyMap.Clear();
 730   destinationPropertyMap.Clear();
 731
 732   Toolkit::Visual::Base sourceVisual      = DevelControl::GetVisual(GetImplementation(source), visualIndex);
 733   Toolkit::Visual::Base destinationVisual = DevelControl::GetVisual(GetImplementation(destination), visualIndex);
 734
 735   // If source or destination doesn't have the visual, do not create transition for the visual.
 736   if(!sourceVisual || !destinationVisual)
 737   {
 738     return;
 739   }
 740
 741   Property::Map sourceMap;
 742   Property::Map destinationMap;
 743   sourceVisual.CreatePropertyMap(sourceMap);
 744   destinationVisual.CreatePropertyMap(destinationMap);
 745
 746   static auto findValueVector4 = [](const Property::Map& map, Property::Index index, const Vector4& defaultValue = Vector4()) -> Vector4 {
 747     Property::Value* propertyValue = map.Find(index);
 748     if(propertyValue)
 749     {
 750       return propertyValue->Get<Vector4>();
 751     }
 752     return defaultValue;
 753   };
 754
 755   static auto findValueFloat = [](const Property::Map& map, Property::Index index, const float& defaultValue = 0.0f) -> float {
 756     Property::Value* propertyValue = map.Find(index);
 757     if(propertyValue)
 758     {
 759       return propertyValue->Get<float>();
 760     }
 761     return defaultValue;
 762   };
 763
 764   Vector4 defaultMixColor(Color::TRANSPARENT);
 765   Vector4 defaultCornerRadius(0.0f, 0.0f, 0.0f, 0.0f);
 766   float   defaultBorderlineWidth(0.0f);
 767   Vector4 defaultBorderlineColor(0.0f, 0.0f, 0.0f, 1.0f);
 768   float   defaultBorderlineOffset(0.0f);
 769
 770   Vector4 sourceMixColor         = findValueVector4(sourceMap, Dali::Toolkit::Visual::Property::MIX_COLOR, defaultMixColor);
 771   Vector4 sourceCornerRadius     = findValueVector4(sourceMap, Toolkit::DevelVisual::Property::CORNER_RADIUS, defaultCornerRadius);
 772   float   sourceBorderlineWidth  = findValueFloat(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, defaultBorderlineWidth);
 773   Vector4 sourceBorderlineColor  = findValueVector4(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_COLOR, defaultBorderlineColor);
 774   float   sourceBorderlineOffset = findValueFloat(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, defaultBorderlineOffset);
 775
 776   Vector4 destinationMixColor         = findValueVector4(destinationMap, Dali::Toolkit::Visual::Property::MIX_COLOR, defaultMixColor);
 777   Vector4 destinationCornerRadius     = findValueVector4(destinationMap, Toolkit::DevelVisual::Property::CORNER_RADIUS, defaultCornerRadius);
 778   float   destinationBorderlineWidth  = findValueFloat(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, defaultBorderlineWidth);
 779   Vector4 destinationBorderlineColor  = findValueVector4(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_COLOR, defaultBorderlineColor);
 780   float   destinationBorderlineOffset = findValueFloat(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, defaultBorderlineOffset);
 781
 782   // If the value of the source Control and that of destination Control is different, the property should be transitioned.
 783   if(Vector3(sourceMixColor) != Vector3(destinationMixColor))
 784   {
 785     sourcePropertyMap.Add(Dali::Toolkit::Visual::Property::MIX_COLOR, Vector3(sourceMixColor));
 786     destinationPropertyMap.Add(Dali::Toolkit::Visual::Property::MIX_COLOR, Vector3(destinationMixColor));
 787   }
 788
 789   if(std::abs(sourceMixColor.a - destinationMixColor.a) > Math::MACHINE_EPSILON_1)
 790   {
 791     sourcePropertyMap.Add(Dali::Toolkit::Visual::Property::OPACITY, sourceMixColor.a);
 792     destinationPropertyMap.Add(Dali::Toolkit::Visual::Property::OPACITY, destinationMixColor.a);
 793   }
 794
 795   if(sourceCornerRadius != destinationCornerRadius)
 796   {
 797     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::CORNER_RADIUS, sourceCornerRadius);
 798     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::CORNER_RADIUS, destinationCornerRadius);
 799   }
 800
 801   if(!Dali::Equals(sourceBorderlineWidth, destinationBorderlineWidth))
 802   {
 803     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, sourceBorderlineWidth);
 804     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, destinationBorderlineWidth);
 805   }
 806
 807   if(sourceBorderlineColor != destinationBorderlineColor)
 808   {
 809     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_COLOR, sourceBorderlineColor);
 810     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_COLOR, destinationBorderlineColor);
 811   }
 812
 813   if(!Dali::Equals(sourceBorderlineOffset, destinationBorderlineOffset))
 814   {
 815     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, sourceBorderlineOffset);
 816     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, destinationBorderlineOffset);
 817   }
 818 }
 819
 820 Control& GetImplementation(Dali::Toolkit::Control& handle)
 821 {
 822   CustomActorImpl& customInterface = handle.GetImplementation();
 823   // downcast to control
 824   Control& impl = dynamic_cast<Internal::Control&>(customInterface);
 825   return impl;
 826 }
 827
 828 const Control& GetImplementation(const Dali::Toolkit::Control& handle)
 829 {
 830   const CustomActorImpl& customInterface = handle.GetImplementation();
 831   // downcast to control
 832   const Control& impl = dynamic_cast<const Internal::Control&>(customInterface);
 833   return impl;
 834 }
 835
 836 } // namespace Internal
 837
 838 } // namespace Toolkit
 839
 840 } // namespace Dali