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

   1 /*
   2  * Copyright (c) 2022 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/object/type-info.h>
  29 #include <dali/public-api/object/type-registry-helper.h>
  30 #include <dali/public-api/size-negotiation/relayout-container.h>
  31 #include <cstring> // for strcmp
  32 #include <limits>
  33 #include <stack>
  34 #include <typeinfo>
  35
  36 // INTERNAL INCLUDES
  37 #include <dali-toolkit/dali-toolkit.h>
  38 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  39 #include <dali-toolkit/devel-api/controls/control-devel.h>
  40 #include <dali-toolkit/devel-api/focus-manager/keyinput-focus-manager.h>
  41 #include <dali-toolkit/devel-api/visuals/color-visual-properties-devel.h>
  42 #include <dali-toolkit/devel-api/visuals/visual-actions-devel.h>
  43 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
  44 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  45 #include <dali-toolkit/internal/visuals/color/color-visual.h>
  46 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
  47 #include <dali-toolkit/public-api/align-enumerations.h>
  48 #include <dali-toolkit/public-api/controls/control.h>
  49 #include <dali-toolkit/public-api/controls/image-view/image-view.h>
  50 #include <dali-toolkit/public-api/focus-manager/keyboard-focus-manager.h>
  51 #include <dali-toolkit/public-api/styling/style-manager.h>
  52 #include <dali-toolkit/public-api/visuals/color-visual-properties.h>
  53 #include <dali-toolkit/public-api/visuals/visual-properties.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 Creates a clipping renderer if required.
  69  * (EG. If no renders exist and clipping is enabled).
  70  * @param[in] controlImpl The control implementation.
  71  */
  72 void CreateClippingRenderer(Control& controlImpl)
  73 {
  74   // We want to add a transparent background if we do not have one for clipping.
  75   Actor self(controlImpl.Self());
  76   int   clippingMode = ClippingMode::DISABLED;
  77   if(self.GetProperty(Actor::Property::CLIPPING_MODE).Get(clippingMode))
  78   {
  79     Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(controlImpl);
  80
  81     if(clippingMode == ClippingMode::CLIP_CHILDREN && controlDataImpl.mVisuals.Empty() && self.GetRendererCount() == 0u)
  82     {
  83       controlImpl.SetBackgroundColor(Color::TRANSPARENT);
  84     }
  85   }
  86 }
  87
  88 } // unnamed namespace
  89
  90 Toolkit::Control Control::New()
  91 {
  92   return New(ControlBehaviour::CONTROL_BEHAVIOUR_DEFAULT);
  93 }
  94
  95 Toolkit::Control Control::New(ControlBehaviour additionalBehaviour)
  96 {
  97   // Create the implementation, temporarily owned on stack
  98   IntrusivePtr<Control> controlImpl = new Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT | additionalBehaviour));
  99
 100   // Pass ownership to handle
 101   Toolkit::Control handle(*controlImpl);
 102
 103   // Second-phase init of the implementation
 104   // This can only be done after the CustomActor connection has been made...
 105   controlImpl->Initialize();
 106
 107   return handle;
 108 }
 109
 110 void Control::SetStyleName(const std::string& styleName)
 111 {
 112   if(styleName != mImpl->mStyleName)
 113   {
 114     mImpl->mStyleName = styleName;
 115
 116     // Apply new style, if stylemanager is available
 117     Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
 118     if(styleManager)
 119     {
 120       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 121     }
 122   }
 123 }
 124
 125 const std::string& Control::GetStyleName() const
 126 {
 127   return mImpl->mStyleName;
 128 }
 129
 130 void Control::SetBackgroundColor(const Vector4& color)
 131 {
 132   mImpl->mBackgroundColor = color;
 133
 134   Property::Map map;
 135   map[Toolkit::Visual::Property::TYPE]           = Toolkit::Visual::COLOR;
 136   map[Toolkit::ColorVisual::Property::MIX_COLOR] = color;
 137
 138   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 139   if(visual && visual.GetType() == Toolkit::Visual::COLOR)
 140   {
 141     // Update background color only
 142     mImpl->DoAction(Toolkit::Control::Property::BACKGROUND, DevelVisual::Action::UPDATE_PROPERTY, map);
 143     return;
 144   }
 145
 146   SetBackground(map);
 147 }
 148
 149 void Control::SetBackground(const Property::Map& map)
 150 {
 151   Toolkit::Visual::Base visual = Toolkit::VisualFactory::Get().CreateVisual(map);
 152   visual.SetName("background");
 153   if(visual)
 154   {
 155     mImpl->RegisterVisual(Toolkit::Control::Property::BACKGROUND, visual, DepthIndex::BACKGROUND);
 156
 157     // Trigger a size negotiation request that may be needed by the new visual to relayout its contents.
 158     RelayoutRequest();
 159   }
 160 }
 161
 162 void Control::ClearBackground()
 163 {
 164   mImpl->UnregisterVisual(Toolkit::Control::Property::BACKGROUND);
 165   mImpl->mBackgroundColor = Color::TRANSPARENT;
 166
 167   // Trigger a size negotiation request that may be needed when unregistering a visual.
 168   RelayoutRequest();
 169 }
 170
 171 void Control::SetResourceReady(bool relayoutRequest)
 172 {
 173   Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
 174   controlDataImpl.ResourceReady(relayoutRequest);
 175 }
 176
 177 Toolkit::DevelControl::ControlAccessible* Control::GetAccessibleObject()
 178 {
 179   return mImpl->GetAccessibleObject();
 180 }
 181
 182 void Control::EnableGestureDetection(GestureType::Value type)
 183 {
 184   if((type & GestureType::PINCH) && !mImpl->mPinchGestureDetector)
 185   {
 186     mImpl->mPinchGestureDetector = PinchGestureDetector::New();
 187     mImpl->mPinchGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PinchDetected);
 188     mImpl->mPinchGestureDetector.Attach(Self());
 189   }
 190
 191   if((type & GestureType::PAN) && !mImpl->mPanGestureDetector)
 192   {
 193     mImpl->mPanGestureDetector = PanGestureDetector::New();
 194     mImpl->mPanGestureDetector.SetMaximumTouchesRequired(2);
 195     mImpl->mPanGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PanDetected);
 196     mImpl->mPanGestureDetector.Attach(Self());
 197   }
 198
 199   if((type & GestureType::TAP) && !mImpl->mTapGestureDetector)
 200   {
 201     mImpl->mTapGestureDetector = TapGestureDetector::New();
 202     mImpl->mTapGestureDetector.DetectedSignal().Connect(mImpl, &Impl::TapDetected);
 203     mImpl->mTapGestureDetector.Attach(Self());
 204   }
 205
 206   if((type & GestureType::LONG_PRESS) && !mImpl->mLongPressGestureDetector)
 207   {
 208     mImpl->mLongPressGestureDetector = LongPressGestureDetector::New();
 209     mImpl->mLongPressGestureDetector.DetectedSignal().Connect(mImpl, &Impl::LongPressDetected);
 210     mImpl->mLongPressGestureDetector.Attach(Self());
 211   }
 212 }
 213
 214 void Control::DisableGestureDetection(GestureType::Value type)
 215 {
 216   if((type & GestureType::PINCH) && mImpl->mPinchGestureDetector)
 217   {
 218     mImpl->mPinchGestureDetector.Detach(Self());
 219     mImpl->mPinchGestureDetector.Reset();
 220   }
 221
 222   if((type & GestureType::PAN) && mImpl->mPanGestureDetector)
 223   {
 224     mImpl->mPanGestureDetector.Detach(Self());
 225     mImpl->mPanGestureDetector.Reset();
 226   }
 227
 228   if((type & GestureType::TAP) && mImpl->mTapGestureDetector)
 229   {
 230     mImpl->mTapGestureDetector.Detach(Self());
 231     mImpl->mTapGestureDetector.Reset();
 232   }
 233
 234   if((type & GestureType::LONG_PRESS) && mImpl->mLongPressGestureDetector)
 235   {
 236     mImpl->mLongPressGestureDetector.Detach(Self());
 237     mImpl->mLongPressGestureDetector.Reset();
 238   }
 239 }
 240
 241 PinchGestureDetector Control::GetPinchGestureDetector() const
 242 {
 243   return mImpl->mPinchGestureDetector;
 244 }
 245
 246 PanGestureDetector Control::GetPanGestureDetector() const
 247 {
 248   return mImpl->mPanGestureDetector;
 249 }
 250
 251 TapGestureDetector Control::GetTapGestureDetector() const
 252 {
 253   return mImpl->mTapGestureDetector;
 254 }
 255
 256 LongPressGestureDetector Control::GetLongPressGestureDetector() const
 257 {
 258   return mImpl->mLongPressGestureDetector;
 259 }
 260
 261 void Control::SetKeyboardNavigationSupport(bool isSupported)
 262 {
 263   mImpl->mIsKeyboardNavigationSupported = isSupported;
 264 }
 265
 266 bool Control::IsKeyboardNavigationSupported()
 267 {
 268   return mImpl->mIsKeyboardNavigationSupported;
 269 }
 270
 271 void Control::SetKeyInputFocus()
 272 {
 273   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 274   {
 275     Toolkit::KeyInputFocusManager::Get().SetFocus(Toolkit::Control::DownCast(Self()));
 276   }
 277 }
 278
 279 bool Control::HasKeyInputFocus()
 280 {
 281   bool result = false;
 282   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 283   {
 284     Toolkit::Control control = Toolkit::KeyInputFocusManager::Get().GetCurrentFocusControl();
 285     if(Self() == control)
 286     {
 287       result = true;
 288     }
 289   }
 290   return result;
 291 }
 292
 293 void Control::ClearKeyInputFocus()
 294 {
 295   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 296   {
 297     Toolkit::KeyInputFocusManager::Get().RemoveFocus(Toolkit::Control::DownCast(Self()));
 298   }
 299 }
 300
 301 void Control::SetAsKeyboardFocusGroup(bool isFocusGroup)
 302 {
 303   mImpl->mIsKeyboardFocusGroup = isFocusGroup;
 304
 305   // The following line will be removed when the deprecated API in KeyboardFocusManager is deleted
 306   Toolkit::KeyboardFocusManager::Get().SetAsFocusGroup(Self(), isFocusGroup);
 307 }
 308
 309 bool Control::IsKeyboardFocusGroup()
 310 {
 311   return Toolkit::KeyboardFocusManager::Get().IsFocusGroup(Self());
 312 }
 313
 314 void Control::AccessibilityActivate()
 315 {
 316   // Inform deriving classes
 317   OnAccessibilityActivated();
 318 }
 319
 320 void Control::KeyboardEnter()
 321 {
 322   // Inform deriving classes
 323   OnKeyboardEnter();
 324 }
 325
 326 bool Control::OnAccessibilityActivated()
 327 {
 328   if(Toolkit::KeyboardFocusManager::Get().SetCurrentFocusActor(Self()))
 329   {
 330     return OnKeyboardEnter();
 331   }
 332   return false;
 333 }
 334
 335 bool Control::OnKeyboardEnter()
 336 {
 337   return false; // Keyboard enter is not handled by default
 338 }
 339
 340 bool Control::OnAccessibilityPan(PanGesture gesture)
 341 {
 342   return false; // Accessibility pan gesture is not handled by default
 343 }
 344
 345 bool Control::OnAccessibilityValueChange(bool isIncrease)
 346 {
 347   return false; // Accessibility value change action is not handled by default
 348 }
 349
 350 bool Control::OnAccessibilityZoom()
 351 {
 352   return false; // Accessibility zoom action is not handled by default
 353 }
 354
 355 DevelControl::ControlAccessible* Control::CreateAccessibleObject()
 356 {
 357   return new DevelControl::ControlAccessible(Self());
 358 }
 359
 360 Actor Control::GetNextKeyboardFocusableActor(Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 361 {
 362   return Actor();
 363 }
 364
 365 void Control::OnKeyboardFocusChangeCommitted(Actor commitedFocusableActor)
 366 {
 367 }
 368
 369 Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
 370 {
 371   return mImpl->mKeyEventSignal;
 372 }
 373
 374 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusGainedSignal()
 375 {
 376   return mImpl->mKeyInputFocusGainedSignal;
 377 }
 378
 379 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusLostSignal()
 380 {
 381   return mImpl->mKeyInputFocusLostSignal;
 382 }
 383
 384 bool Control::EmitKeyEventSignal(const KeyEvent& event)
 385 {
 386   // Guard against destruction during signal emission
 387   Dali::Toolkit::Control handle(GetOwner());
 388
 389   bool consumed = false;
 390
 391   consumed = mImpl->FilterKeyEvent(event);
 392
 393   // signals are allocated dynamically when someone connects
 394   if(!consumed && !mImpl->mKeyEventSignal.Empty())
 395   {
 396     consumed = mImpl->mKeyEventSignal.Emit(handle, event);
 397   }
 398
 399   if(!consumed)
 400   {
 401     // Notification for derived classes
 402     consumed = OnKeyEvent(event);
 403   }
 404
 405   return consumed;
 406 }
 407
 408 Control::Control(ControlBehaviour behaviourFlags)
 409 : CustomActorImpl(static_cast<ActorFlags>(behaviourFlags)),
 410   mImpl(new Impl(*this))
 411 {
 412   mImpl->mFlags = behaviourFlags;
 413 }
 414
 415 Control::~Control()
 416 {
 417   delete mImpl;
 418 }
 419
 420 void Control::Initialize()
 421 {
 422   // Call deriving classes so initialised before styling is applied to them.
 423   OnInitialize();
 424
 425   if(!(mImpl->mFlags & DISABLE_STYLE_CHANGE_SIGNALS))
 426   {
 427     Toolkit::StyleManager styleManager = StyleManager::Get();
 428
 429     // if stylemanager is available
 430     if(styleManager)
 431     {
 432       StyleManager& styleManagerImpl = GetImpl(styleManager);
 433
 434       // Register for style changes
 435       styleManagerImpl.ControlStyleChangeSignal().Connect(this, &Control::OnStyleChange);
 436
 437       // Apply the current style
 438       styleManagerImpl.ApplyThemeStyleAtInit(Toolkit::Control(GetOwner()));
 439     }
 440   }
 441
 442   if(mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT)
 443   {
 444     SetKeyboardNavigationSupport(true);
 445   }
 446
 447   Dali::TypeInfo type;
 448   Self().GetTypeInfo(type);
 449   if(type)
 450   {
 451     auto typeName = type.GetName();
 452     DevelControl::AppendAccessibilityAttribute(Toolkit::Control::DownCast(Self()), "class", typeName);
 453   }
 454 }
 455
 456 void Control::OnInitialize()
 457 {
 458 }
 459
 460 bool Control::IsResourceReady() const
 461 {
 462   const Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
 463   return controlDataImpl.IsResourceReady();
 464 }
 465
 466 void Control::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 467 {
 468   // By default the control is only interested in theme (not font) changes
 469   if(styleManager && change == StyleChange::THEME_CHANGE)
 470   {
 471     GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 472     RelayoutRequest();
 473   }
 474 }
 475
 476 void Control::OnPinch(const PinchGesture& pinch)
 477 {
 478   if(!(mImpl->mStartingPinchScale))
 479   {
 480     // lazy allocate
 481     mImpl->mStartingPinchScale = new Vector3;
 482   }
 483
 484   if(pinch.GetState() == GestureState::STARTED)
 485   {
 486     *(mImpl->mStartingPinchScale) = Self().GetCurrentProperty<Vector3>(Actor::Property::SCALE);
 487   }
 488
 489   Self().SetProperty(Actor::Property::SCALE, *(mImpl->mStartingPinchScale) * pinch.GetScale());
 490 }
 491
 492 void Control::OnPan(const PanGesture& pan)
 493 {
 494 }
 495
 496 void Control::OnTap(const TapGesture& tap)
 497 {
 498 }
 499
 500 void Control::OnLongPress(const LongPressGesture& longPress)
 501 {
 502 }
 503
 504 void Control::EmitKeyInputFocusSignal(bool focusGained)
 505 {
 506   Dali::Toolkit::Control handle(GetOwner());
 507
 508   if(Accessibility::IsUp())
 509   {
 510     auto self = GetAccessibleObject();
 511     self->EmitFocused(focusGained);
 512     auto parent = self->GetParent();
 513     if(parent && !self->GetStates()[Dali::Accessibility::State::MANAGES_DESCENDANTS])
 514     {
 515       parent->EmitActiveDescendantChanged(self);
 516     }
 517   }
 518
 519   if(focusGained)
 520   {
 521     // signals are allocated dynamically when someone connects
 522     if(!mImpl->mKeyInputFocusGainedSignal.Empty())
 523     {
 524       mImpl->mKeyInputFocusGainedSignal.Emit(handle);
 525     }
 526   }
 527   else
 528   {
 529     // signals are allocated dynamically when someone connects
 530     if(!mImpl->mKeyInputFocusLostSignal.Empty())
 531     {
 532       mImpl->mKeyInputFocusLostSignal.Emit(handle);
 533     }
 534   }
 535 }
 536
 537 void Control::OnSceneConnection(int depth)
 538 {
 539   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection number of registered visuals(%d)\n", mImpl->mVisuals.Size());
 540
 541   Actor self(Self());
 542
 543   for(RegisteredVisualContainer::Iterator iter = mImpl->mVisuals.Begin(); iter != mImpl->mVisuals.End(); iter++)
 544   {
 545     // Check whether the visual is empty and enabled
 546     if((*iter)->visual && (*iter)->enabled)
 547     {
 548       DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection Setting visual(%d) on scene\n", (*iter)->index);
 549       Toolkit::GetImplementation((*iter)->visual).SetOnScene(self);
 550     }
 551   }
 552
 553   // The clipping renderer is only created if required.
 554   CreateClippingRenderer(*this);
 555 }
 556
 557 void Control::OnSceneDisconnection()
 558 {
 559   mImpl->OnSceneDisconnection();
 560 }
 561
 562 void Control::OnKeyInputFocusGained()
 563 {
 564   EmitKeyInputFocusSignal(true);
 565 }
 566
 567 void Control::OnKeyInputFocusLost()
 568 {
 569   EmitKeyInputFocusSignal(false);
 570 }
 571
 572 void Control::OnChildAdd(Actor& child)
 573 {
 574 }
 575
 576 void Control::OnChildRemove(Actor& child)
 577 {
 578 }
 579
 580 void Control::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 581 {
 582   // If the clipping mode has been set, we may need to create a renderer.
 583   // Only do this if we are already on-stage as the OnSceneConnection will handle the off-stage clipping controls.
 584   switch(index)
 585   {
 586     case Actor::Property::CLIPPING_MODE:
 587     {
 588       if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 589       {
 590         // Note: This method will handle whether creation of the renderer is required.
 591         CreateClippingRenderer(*this);
 592       }
 593       break;
 594     }
 595     case Actor::Property::VISIBLE:
 596     {
 597       GetAccessibleObject()->EmitVisible(Self().GetProperty<bool>(Actor::Property::VISIBLE));
 598       break;
 599     }
 600     case DevelActor::Property::USER_INTERACTION_ENABLED:
 601     {
 602       const bool enabled = propertyValue.Get<bool>();
 603       if(!enabled && Self() == Dali::Toolkit::KeyboardFocusManager::Get().GetCurrentFocusActor())
 604       {
 605         Dali::Toolkit::KeyboardFocusManager::Get().ClearFocus();
 606       }
 607       break;
 608     }
 609   }
 610 }
 611
 612 void Control::OnSizeSet(const Vector3& targetSize)
 613 {
 614   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 615   if(visual)
 616   {
 617     Vector2 size(targetSize);
 618     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 619   }
 620 }
 621
 622 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 623 {
 624   // @todo size negotiate background to new size, animate as well?
 625 }
 626
 627 bool Control::OnKeyEvent(const KeyEvent& event)
 628 {
 629   return false; // Do not consume
 630 }
 631
 632 void Control::OnRelayout(const Vector2& size, RelayoutContainer& container)
 633 {
 634   for(unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i)
 635   {
 636     Actor   child = Self().GetChildAt(i);
 637     Vector2 newChildSize(size);
 638
 639     // When set the padding or margin on the control, child should be resized and repositioned.
 640     if((mImpl->mPadding.start != 0) || (mImpl->mPadding.end != 0) || (mImpl->mPadding.top != 0) || (mImpl->mPadding.bottom != 0) ||
 641        (mImpl->mMargin.start != 0) || (mImpl->mMargin.end != 0) || (mImpl->mMargin.top != 0) || (mImpl->mMargin.bottom != 0))
 642     {
 643       Extents padding = mImpl->mPadding;
 644
 645       Dali::CustomActor           ownerActor(GetOwner());
 646       Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(ownerActor.GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 647
 648       if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 649       {
 650         std::swap(padding.start, padding.end);
 651       }
 652
 653       newChildSize.width  = size.width - (padding.start + padding.end);
 654       newChildSize.height = size.height - (padding.top + padding.bottom);
 655
 656       // Cannot use childs Position property as it can already have padding and margin applied on it,
 657       // so we end up cumulatively applying them over and over again.
 658       Vector2 childOffset(0.f, 0.f);
 659       childOffset.x += (mImpl->mMargin.start + padding.start);
 660       childOffset.y += (mImpl->mMargin.top + padding.top);
 661
 662       child.SetProperty(Actor::Property::POSITION, Vector2(childOffset.x, childOffset.y));
 663     }
 664     container.Add(child, newChildSize);
 665   }
 666
 667   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 668   if(visual)
 669   {
 670     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 671   }
 672 }
 673
 674 void Control::OnSetResizePolicy(ResizePolicy::Type policy, Dimension::Type dimension)
 675 {
 676 }
 677
 678 Vector3 Control::GetNaturalSize()
 679 {
 680   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::GetNaturalSize for %s\n", Self().GetProperty<std::string>(Dali::Actor::Property::NAME).c_str());
 681   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 682   if(visual)
 683   {
 684     Vector2 naturalSize;
 685     visual.GetNaturalSize(naturalSize);
 686     naturalSize.width += (mImpl->mPadding.start + mImpl->mPadding.end);
 687     naturalSize.height += (mImpl->mPadding.top + mImpl->mPadding.bottom);
 688     return Vector3(naturalSize);
 689   }
 690   return Vector3::ZERO;
 691 }
 692
 693 float Control::CalculateChildSize(const Dali::Actor& child, Dimension::Type dimension)
 694 {
 695   return CalculateChildSizeBase(child, dimension);
 696 }
 697
 698 float Control::GetHeightForWidth(float width)
 699 {
 700   return GetHeightForWidthBase(width);
 701 }
 702
 703 float Control::GetWidthForHeight(float height)
 704 {
 705   return GetWidthForHeightBase(height);
 706 }
 707
 708 bool Control::RelayoutDependentOnChildren(Dimension::Type dimension)
 709 {
 710   return RelayoutDependentOnChildrenBase(dimension);
 711 }
 712
 713 void Control::OnCalculateRelayoutSize(Dimension::Type dimension)
 714 {
 715 }
 716
 717 void Control::OnLayoutNegotiated(float size, Dimension::Type dimension)
 718 {
 719 }
 720
 721 void Control::SignalConnected(SlotObserver* slotObserver, CallbackBase* callback)
 722 {
 723   mImpl->SignalConnected(slotObserver, callback);
 724 }
 725
 726 void Control::SignalDisconnected(SlotObserver* slotObserver, CallbackBase* callback)
 727 {
 728   mImpl->SignalDisconnected(slotObserver, callback);
 729 }
 730
 731 void Control::MakeVisualTransition(Dali::Property::Map& sourcePropertyMap, Dali::Property::Map& destinationPropertyMap, Dali::Toolkit::Control source, Dali::Toolkit::Control destination, Dali::Property::Index visualIndex)
 732 {
 733   sourcePropertyMap.Clear();
 734   destinationPropertyMap.Clear();
 735
 736   Toolkit::Visual::Base sourceVisual      = DevelControl::GetVisual(GetImplementation(source), visualIndex);
 737   Toolkit::Visual::Base destinationVisual = DevelControl::GetVisual(GetImplementation(destination), visualIndex);
 738
 739   // If source or destination doesn't have the visual, do not create transition for the visual.
 740   if(!sourceVisual || !destinationVisual)
 741   {
 742     return;
 743   }
 744
 745   Property::Map sourceMap;
 746   Property::Map destinationMap;
 747   sourceVisual.CreatePropertyMap(sourceMap);
 748   destinationVisual.CreatePropertyMap(destinationMap);
 749
 750   static auto findValueVector4 = [](const Property::Map& map, Property::Index index, const Vector4& defaultValue = Vector4()) -> Vector4 {
 751     Property::Value* propertyValue = map.Find(index);
 752     if(propertyValue)
 753     {
 754       return propertyValue->Get<Vector4>();
 755     }
 756     return defaultValue;
 757   };
 758
 759   static auto findValueFloat = [](const Property::Map& map, Property::Index index, const float& defaultValue = 0.0f) -> float {
 760     Property::Value* propertyValue = map.Find(index);
 761     if(propertyValue)
 762     {
 763       return propertyValue->Get<float>();
 764     }
 765     return defaultValue;
 766   };
 767
 768   Vector4 defaultMixColor(Color::TRANSPARENT);
 769   Vector4 defaultCornerRadius(0.0f, 0.0f, 0.0f, 0.0f);
 770   float   defaultBorderlineWidth(0.0f);
 771   Vector4 defaultBorderlineColor(0.0f, 0.0f, 0.0f, 1.0f);
 772   float   defaultBorderlineOffset(0.0f);
 773
 774   Vector4 sourceMixColor         = findValueVector4(sourceMap, Dali::Toolkit::Visual::Property::MIX_COLOR, defaultMixColor);
 775   Vector4 sourceCornerRadius     = findValueVector4(sourceMap, Toolkit::DevelVisual::Property::CORNER_RADIUS, defaultCornerRadius);
 776   float   sourceBorderlineWidth  = findValueFloat(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, defaultBorderlineWidth);
 777   Vector4 sourceBorderlineColor  = findValueVector4(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_COLOR, defaultBorderlineColor);
 778   float   sourceBorderlineOffset = findValueFloat(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, defaultBorderlineOffset);
 779
 780   Vector4 destinationMixColor         = findValueVector4(destinationMap, Dali::Toolkit::Visual::Property::MIX_COLOR, defaultMixColor);
 781   Vector4 destinationCornerRadius     = findValueVector4(destinationMap, Toolkit::DevelVisual::Property::CORNER_RADIUS, defaultCornerRadius);
 782   float   destinationBorderlineWidth  = findValueFloat(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, defaultBorderlineWidth);
 783   Vector4 destinationBorderlineColor  = findValueVector4(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_COLOR, defaultBorderlineColor);
 784   float   destinationBorderlineOffset = findValueFloat(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, defaultBorderlineOffset);
 785
 786   // If the value of the source Control and that of destination Control is different, the property should be transitioned.
 787   if(Vector3(sourceMixColor) != Vector3(destinationMixColor))
 788   {
 789     sourcePropertyMap.Add(Dali::Toolkit::Visual::Property::MIX_COLOR, Vector3(sourceMixColor));
 790     destinationPropertyMap.Add(Dali::Toolkit::Visual::Property::MIX_COLOR, Vector3(destinationMixColor));
 791   }
 792
 793   if(std::abs(sourceMixColor.a - destinationMixColor.a) > Math::MACHINE_EPSILON_1)
 794   {
 795     sourcePropertyMap.Add(Dali::Toolkit::Visual::Property::OPACITY, sourceMixColor.a);
 796     destinationPropertyMap.Add(Dali::Toolkit::Visual::Property::OPACITY, destinationMixColor.a);
 797   }
 798
 799   if(sourceCornerRadius != destinationCornerRadius)
 800   {
 801     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::CORNER_RADIUS, sourceCornerRadius);
 802     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::CORNER_RADIUS, destinationCornerRadius);
 803   }
 804
 805   if(!Dali::Equals(sourceBorderlineWidth, destinationBorderlineWidth))
 806   {
 807     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, sourceBorderlineWidth);
 808     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, destinationBorderlineWidth);
 809   }
 810
 811   if(sourceBorderlineColor != destinationBorderlineColor)
 812   {
 813     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_COLOR, sourceBorderlineColor);
 814     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_COLOR, destinationBorderlineColor);
 815   }
 816
 817   if(!Dali::Equals(sourceBorderlineOffset, destinationBorderlineOffset))
 818   {
 819     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, sourceBorderlineOffset);
 820     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, destinationBorderlineOffset);
 821   }
 822 }
 823
 824 Control& GetImplementation(Dali::Toolkit::Control& handle)
 825 {
 826   CustomActorImpl& customInterface = handle.GetImplementation();
 827   // downcast to control
 828   Control& impl = dynamic_cast<Internal::Control&>(customInterface);
 829   return impl;
 830 }
 831
 832 const Control& GetImplementation(const Dali::Toolkit::Control& handle)
 833 {
 834   const CustomActorImpl& customInterface = handle.GetImplementation();
 835   // downcast to control
 836   const Control& impl = dynamic_cast<const Internal::Control&>(customInterface);
 837   return impl;
 838 }
 839
 840 } // namespace Internal
 841
 842 } // namespace Toolkit
 843
 844 } // namespace Dali