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/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/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   return New(ControlBehaviour::CONTROL_BEHAVIOUR_DEFAULT);
  92 }
  93
  94 Toolkit::Control Control::New(ControlBehaviour additionalBehaviour)
  95 {
  96   // Create the implementation, temporarily owned on stack
  97   IntrusivePtr<Control> controlImpl = new Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT | additionalBehaviour));
  98
  99   // Pass ownership to handle
 100   Toolkit::Control handle(*controlImpl);
 101
 102   // Second-phase init of the implementation
 103   // This can only be done after the CustomActor connection has been made...
 104   controlImpl->Initialize();
 105
 106   return handle;
 107 }
 108
 109 void Control::SetStyleName(const std::string& styleName)
 110 {
 111   if(styleName != mImpl->mStyleName)
 112   {
 113     mImpl->mStyleName = styleName;
 114
 115     // Apply new style, if stylemanager is available
 116     Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
 117     if(styleManager)
 118     {
 119       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 120     }
 121   }
 122 }
 123
 124 const std::string& Control::GetStyleName() const
 125 {
 126   return mImpl->mStyleName;
 127 }
 128
 129 void Control::SetBackgroundColor(const Vector4& color)
 130 {
 131   mImpl->mBackgroundColor = color;
 132
 133   Property::Map map;
 134   map[Toolkit::Visual::Property::TYPE]           = Toolkit::Visual::COLOR;
 135   map[Toolkit::ColorVisual::Property::MIX_COLOR] = color;
 136
 137   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 138   if(visual && visual.GetType() == Toolkit::Visual::COLOR)
 139   {
 140     // Update background color only
 141     mImpl->DoAction(Toolkit::Control::Property::BACKGROUND, DevelVisual::Action::UPDATE_PROPERTY, map);
 142     return;
 143   }
 144
 145   SetBackground(map);
 146 }
 147
 148 void Control::SetBackground(const Property::Map& map)
 149 {
 150   Toolkit::Visual::Base visual = Toolkit::VisualFactory::Get().CreateVisual(map);
 151   visual.SetName("background");
 152   if(visual)
 153   {
 154     mImpl->RegisterVisual(Toolkit::Control::Property::BACKGROUND, visual, DepthIndex::BACKGROUND);
 155
 156     // Trigger a size negotiation request that may be needed by the new visual to relayout its contents.
 157     RelayoutRequest();
 158   }
 159 }
 160
 161 void Control::ClearBackground()
 162 {
 163   mImpl->UnregisterVisual(Toolkit::Control::Property::BACKGROUND);
 164   mImpl->mBackgroundColor = Color::TRANSPARENT;
 165
 166   // Trigger a size negotiation request that may be needed when unregistering a visual.
 167   RelayoutRequest();
 168 }
 169
 170 void Control::SetResourceReady(bool relayoutRequest)
 171 {
 172   Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
 173   controlDataImpl.ResourceReady(relayoutRequest);
 174 }
 175
 176 Toolkit::DevelControl::ControlAccessible* Control::GetAccessibleObject()
 177 {
 178   return mImpl->GetAccessibleObject();
 179 }
 180
 181 void Control::EnableGestureDetection(GestureType::Value type)
 182 {
 183   if((type & GestureType::PINCH) && !mImpl->mPinchGestureDetector)
 184   {
 185     mImpl->mPinchGestureDetector = PinchGestureDetector::New();
 186     mImpl->mPinchGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PinchDetected);
 187     mImpl->mPinchGestureDetector.Attach(Self());
 188   }
 189
 190   if((type & GestureType::PAN) && !mImpl->mPanGestureDetector)
 191   {
 192     mImpl->mPanGestureDetector = PanGestureDetector::New();
 193     mImpl->mPanGestureDetector.SetMaximumTouchesRequired(2);
 194     mImpl->mPanGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PanDetected);
 195     mImpl->mPanGestureDetector.Attach(Self());
 196   }
 197
 198   if((type & GestureType::TAP) && !mImpl->mTapGestureDetector)
 199   {
 200     mImpl->mTapGestureDetector = TapGestureDetector::New();
 201     mImpl->mTapGestureDetector.DetectedSignal().Connect(mImpl, &Impl::TapDetected);
 202     mImpl->mTapGestureDetector.Attach(Self());
 203   }
 204
 205   if((type & GestureType::LONG_PRESS) && !mImpl->mLongPressGestureDetector)
 206   {
 207     mImpl->mLongPressGestureDetector = LongPressGestureDetector::New();
 208     mImpl->mLongPressGestureDetector.DetectedSignal().Connect(mImpl, &Impl::LongPressDetected);
 209     mImpl->mLongPressGestureDetector.Attach(Self());
 210   }
 211 }
 212
 213 void Control::DisableGestureDetection(GestureType::Value type)
 214 {
 215   if((type & GestureType::PINCH) && mImpl->mPinchGestureDetector)
 216   {
 217     mImpl->mPinchGestureDetector.Detach(Self());
 218     mImpl->mPinchGestureDetector.Reset();
 219   }
 220
 221   if((type & GestureType::PAN) && mImpl->mPanGestureDetector)
 222   {
 223     mImpl->mPanGestureDetector.Detach(Self());
 224     mImpl->mPanGestureDetector.Reset();
 225   }
 226
 227   if((type & GestureType::TAP) && mImpl->mTapGestureDetector)
 228   {
 229     mImpl->mTapGestureDetector.Detach(Self());
 230     mImpl->mTapGestureDetector.Reset();
 231   }
 232
 233   if((type & GestureType::LONG_PRESS) && mImpl->mLongPressGestureDetector)
 234   {
 235     mImpl->mLongPressGestureDetector.Detach(Self());
 236     mImpl->mLongPressGestureDetector.Reset();
 237   }
 238 }
 239
 240 PinchGestureDetector Control::GetPinchGestureDetector() const
 241 {
 242   return mImpl->mPinchGestureDetector;
 243 }
 244
 245 PanGestureDetector Control::GetPanGestureDetector() const
 246 {
 247   return mImpl->mPanGestureDetector;
 248 }
 249
 250 TapGestureDetector Control::GetTapGestureDetector() const
 251 {
 252   return mImpl->mTapGestureDetector;
 253 }
 254
 255 LongPressGestureDetector Control::GetLongPressGestureDetector() const
 256 {
 257   return mImpl->mLongPressGestureDetector;
 258 }
 259
 260 void Control::SetKeyboardNavigationSupport(bool isSupported)
 261 {
 262   mImpl->mIsKeyboardNavigationSupported = isSupported;
 263 }
 264
 265 bool Control::IsKeyboardNavigationSupported()
 266 {
 267   return mImpl->mIsKeyboardNavigationSupported;
 268 }
 269
 270 void Control::SetKeyInputFocus()
 271 {
 272   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 273   {
 274     Toolkit::KeyInputFocusManager::Get().SetFocus(Toolkit::Control::DownCast(Self()));
 275   }
 276 }
 277
 278 bool Control::HasKeyInputFocus()
 279 {
 280   bool result = false;
 281   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 282   {
 283     Toolkit::Control control = Toolkit::KeyInputFocusManager::Get().GetCurrentFocusControl();
 284     if(Self() == control)
 285     {
 286       result = true;
 287     }
 288   }
 289   return result;
 290 }
 291
 292 void Control::ClearKeyInputFocus()
 293 {
 294   if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 295   {
 296     Toolkit::KeyInputFocusManager::Get().RemoveFocus(Toolkit::Control::DownCast(Self()));
 297   }
 298 }
 299
 300 void Control::SetAsKeyboardFocusGroup(bool isFocusGroup)
 301 {
 302   mImpl->mIsKeyboardFocusGroup = isFocusGroup;
 303
 304   // The following line will be removed when the deprecated API in KeyboardFocusManager is deleted
 305   Toolkit::KeyboardFocusManager::Get().SetAsFocusGroup(Self(), isFocusGroup);
 306 }
 307
 308 bool Control::IsKeyboardFocusGroup()
 309 {
 310   return Toolkit::KeyboardFocusManager::Get().IsFocusGroup(Self());
 311 }
 312
 313 void Control::AccessibilityActivate()
 314 {
 315   // Inform deriving classes
 316   OnAccessibilityActivated();
 317 }
 318
 319 void Control::KeyboardEnter()
 320 {
 321   // Inform deriving classes
 322   OnKeyboardEnter();
 323 }
 324
 325 bool Control::OnAccessibilityActivated()
 326 {
 327   if(Toolkit::KeyboardFocusManager::Get().SetCurrentFocusActor(Self()))
 328   {
 329     return OnKeyboardEnter();
 330   }
 331   return false;
 332 }
 333
 334 bool Control::OnKeyboardEnter()
 335 {
 336   return false; // Keyboard enter is not handled by default
 337 }
 338
 339 bool Control::OnAccessibilityPan(PanGesture gesture)
 340 {
 341   return false; // Accessibility pan gesture is not handled by default
 342 }
 343
 344 bool Control::OnAccessibilityValueChange(bool isIncrease)
 345 {
 346   return false; // Accessibility value change action is not handled by default
 347 }
 348
 349 bool Control::OnAccessibilityZoom()
 350 {
 351   return false; // Accessibility zoom action is not handled by default
 352 }
 353
 354 DevelControl::ControlAccessible* Control::CreateAccessibleObject()
 355 {
 356   return new DevelControl::ControlAccessible(Self());
 357 }
 358
 359 Actor Control::GetNextKeyboardFocusableActor(Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 360 {
 361   return Actor();
 362 }
 363
 364 void Control::OnKeyboardFocusChangeCommitted(Actor commitedFocusableActor)
 365 {
 366 }
 367
 368 Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
 369 {
 370   return mImpl->mKeyEventSignal;
 371 }
 372
 373 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusGainedSignal()
 374 {
 375   return mImpl->mKeyInputFocusGainedSignal;
 376 }
 377
 378 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusLostSignal()
 379 {
 380   return mImpl->mKeyInputFocusLostSignal;
 381 }
 382
 383 bool Control::EmitKeyEventSignal(const KeyEvent& event)
 384 {
 385   // Guard against destruction during signal emission
 386   Dali::Toolkit::Control handle(GetOwner());
 387
 388   bool consumed = false;
 389
 390   consumed = mImpl->FilterKeyEvent(event);
 391
 392   // signals are allocated dynamically when someone connects
 393   if(!consumed && !mImpl->mKeyEventSignal.Empty())
 394   {
 395     consumed = mImpl->mKeyEventSignal.Emit(handle, event);
 396   }
 397
 398   if(!consumed)
 399   {
 400     // Notification for derived classes
 401     consumed = OnKeyEvent(event);
 402   }
 403
 404   return consumed;
 405 }
 406
 407 Control::Control(ControlBehaviour behaviourFlags)
 408 : CustomActorImpl(static_cast<ActorFlags>(behaviourFlags)),
 409   mImpl(new Impl(*this))
 410 {
 411   mImpl->mFlags = behaviourFlags;
 412 }
 413
 414 Control::~Control()
 415 {
 416   delete mImpl;
 417 }
 418
 419 void Control::Initialize()
 420 {
 421   // Call deriving classes so initialised before styling is applied to them.
 422   OnInitialize();
 423
 424   if(!(mImpl->mFlags & DISABLE_STYLE_CHANGE_SIGNALS))
 425   {
 426     Toolkit::StyleManager styleManager = StyleManager::Get();
 427
 428     // if stylemanager is available
 429     if(styleManager)
 430     {
 431       StyleManager& styleManagerImpl = GetImpl(styleManager);
 432
 433       // Register for style changes
 434       styleManagerImpl.ControlStyleChangeSignal().Connect(this, &Control::OnStyleChange);
 435
 436       // Apply the current style
 437       styleManagerImpl.ApplyThemeStyleAtInit(Toolkit::Control(GetOwner()));
 438     }
 439   }
 440
 441   if(mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT)
 442   {
 443     SetKeyboardNavigationSupport(true);
 444   }
 445
 446   Dali::TypeInfo type;
 447   Self().GetTypeInfo(type);
 448   if(type)
 449   {
 450     auto typeName = type.GetName();
 451     DevelControl::AppendAccessibilityAttribute(Toolkit::Control::DownCast(Self()), "class", typeName);
 452   }
 453 }
 454
 455 void Control::OnInitialize()
 456 {
 457 }
 458
 459 bool Control::IsResourceReady() const
 460 {
 461   const Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
 462   return controlDataImpl.IsResourceReady();
 463 }
 464
 465 void Control::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 466 {
 467   // By default the control is only interested in theme (not font) changes
 468   if(styleManager && change == StyleChange::THEME_CHANGE)
 469   {
 470     GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 471     RelayoutRequest();
 472   }
 473 }
 474
 475 void Control::OnPinch(const PinchGesture& pinch)
 476 {
 477   if(!(mImpl->mStartingPinchScale))
 478   {
 479     // lazy allocate
 480     mImpl->mStartingPinchScale = new Vector3;
 481   }
 482
 483   if(pinch.GetState() == GestureState::STARTED)
 484   {
 485     *(mImpl->mStartingPinchScale) = Self().GetCurrentProperty<Vector3>(Actor::Property::SCALE);
 486   }
 487
 488   Self().SetProperty(Actor::Property::SCALE, *(mImpl->mStartingPinchScale) * pinch.GetScale());
 489 }
 490
 491 void Control::OnPan(const PanGesture& pan)
 492 {
 493 }
 494
 495 void Control::OnTap(const TapGesture& tap)
 496 {
 497 }
 498
 499 void Control::OnLongPress(const LongPressGesture& longPress)
 500 {
 501 }
 502
 503 void Control::EmitKeyInputFocusSignal(bool focusGained)
 504 {
 505   Dali::Toolkit::Control handle(GetOwner());
 506
 507   if(Accessibility::IsUp())
 508   {
 509     auto self = GetAccessibleObject();
 510     self->EmitFocused(focusGained);
 511     auto parent = self->GetParent();
 512     if(parent && !self->GetStates()[Dali::Accessibility::State::MANAGES_DESCENDANTS])
 513     {
 514       parent->EmitActiveDescendantChanged(self);
 515     }
 516   }
 517
 518   if(focusGained)
 519   {
 520     // signals are allocated dynamically when someone connects
 521     if(!mImpl->mKeyInputFocusGainedSignal.Empty())
 522     {
 523       mImpl->mKeyInputFocusGainedSignal.Emit(handle);
 524     }
 525   }
 526   else
 527   {
 528     // signals are allocated dynamically when someone connects
 529     if(!mImpl->mKeyInputFocusLostSignal.Empty())
 530     {
 531       mImpl->mKeyInputFocusLostSignal.Emit(handle);
 532     }
 533   }
 534 }
 535
 536 void Control::OnSceneConnection(int depth)
 537 {
 538   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection number of registered visuals(%d)\n", mImpl->mVisuals.Size());
 539
 540   Actor self(Self());
 541
 542   for(RegisteredVisualContainer::Iterator iter = mImpl->mVisuals.Begin(); iter != mImpl->mVisuals.End(); iter++)
 543   {
 544     // Check whether the visual is empty and enabled
 545     if((*iter)->visual && (*iter)->enabled)
 546     {
 547       DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::OnSceneConnection Setting visual(%d) on scene\n", (*iter)->index);
 548       Toolkit::GetImplementation((*iter)->visual).SetOnScene(self);
 549     }
 550   }
 551
 552   // The clipping renderer is only created if required.
 553   CreateClippingRenderer(*this);
 554 }
 555
 556 void Control::OnSceneDisconnection()
 557 {
 558   mImpl->OnSceneDisconnection();
 559 }
 560
 561 void Control::OnKeyInputFocusGained()
 562 {
 563   EmitKeyInputFocusSignal(true);
 564 }
 565
 566 void Control::OnKeyInputFocusLost()
 567 {
 568   EmitKeyInputFocusSignal(false);
 569 }
 570
 571 void Control::OnChildAdd(Actor& child)
 572 {
 573 }
 574
 575 void Control::OnChildRemove(Actor& child)
 576 {
 577 }
 578
 579 void Control::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 580 {
 581   // If the clipping mode has been set, we may need to create a renderer.
 582   // Only do this if we are already on-stage as the OnSceneConnection will handle the off-stage clipping controls.
 583   switch(index)
 584   {
 585     case Actor::Property::CLIPPING_MODE:
 586     {
 587       if(Self().GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
 588       {
 589         // Note: This method will handle whether creation of the renderer is required.
 590         CreateClippingRenderer(*this);
 591       }
 592       break;
 593     }
 594     case Actor::Property::VISIBLE:
 595     {
 596       GetAccessibleObject()->EmitVisible(Self().GetProperty<bool>(Actor::Property::VISIBLE));
 597       break;
 598     }
 599     case DevelActor::Property::USER_INTERACTION_ENABLED:
 600     {
 601       const bool enabled = propertyValue.Get<bool>();
 602       if (!enabled && Self() == Dali::Toolkit::KeyboardFocusManager::Get().GetCurrentFocusActor())
 603       {
 604         Dali::Toolkit::KeyboardFocusManager::Get().ClearFocus();
 605       }
 606       break;
 607     }
 608   }
 609 }
 610
 611 void Control::OnSizeSet(const Vector3& targetSize)
 612 {
 613   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 614   if(visual)
 615   {
 616     Vector2 size(targetSize);
 617     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 618   }
 619 }
 620
 621 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 622 {
 623   // @todo size negotiate background to new size, animate as well?
 624 }
 625
 626 bool Control::OnKeyEvent(const KeyEvent& event)
 627 {
 628   return false; // Do not consume
 629 }
 630
 631 void Control::OnRelayout(const Vector2& size, RelayoutContainer& container)
 632 {
 633   for(unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i)
 634   {
 635     Actor   child = Self().GetChildAt(i);
 636     Vector2 newChildSize(size);
 637
 638     // When set the padding or margin on the control, child should be resized and repositioned.
 639     if((mImpl->mPadding.start != 0) || (mImpl->mPadding.end != 0) || (mImpl->mPadding.top != 0) || (mImpl->mPadding.bottom != 0) ||
 640        (mImpl->mMargin.start != 0) || (mImpl->mMargin.end != 0) || (mImpl->mMargin.top != 0) || (mImpl->mMargin.bottom != 0))
 641     {
 642       Extents padding = mImpl->mPadding;
 643
 644       Dali::CustomActor           ownerActor(GetOwner());
 645       Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(ownerActor.GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 646
 647       if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 648       {
 649         std::swap(padding.start, padding.end);
 650       }
 651
 652       newChildSize.width  = size.width - (padding.start + padding.end);
 653       newChildSize.height = size.height - (padding.top + padding.bottom);
 654
 655       // Cannot use childs Position property as it can already have padding and margin applied on it,
 656       // so we end up cumulatively applying them over and over again.
 657       Vector2 childOffset(0.f, 0.f);
 658       childOffset.x += (mImpl->mMargin.start + padding.start);
 659       childOffset.y += (mImpl->mMargin.top + padding.top);
 660
 661       child.SetProperty(Actor::Property::POSITION, Vector2(childOffset.x, childOffset.y));
 662     }
 663     container.Add(child, newChildSize);
 664   }
 665
 666   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 667   if(visual)
 668   {
 669     visual.SetTransformAndSize(Property::Map(), size); // Send an empty map as we do not want to modify the visual's set transform
 670   }
 671 }
 672
 673 void Control::OnSetResizePolicy(ResizePolicy::Type policy, Dimension::Type dimension)
 674 {
 675 }
 676
 677 Vector3 Control::GetNaturalSize()
 678 {
 679   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "Control::GetNaturalSize for %s\n", Self().GetProperty<std::string>(Dali::Actor::Property::NAME).c_str());
 680   Toolkit::Visual::Base visual = mImpl->GetVisual(Toolkit::Control::Property::BACKGROUND);
 681   if(visual)
 682   {
 683     Vector2 naturalSize;
 684     visual.GetNaturalSize(naturalSize);
 685     naturalSize.width += (mImpl->mPadding.start + mImpl->mPadding.end);
 686     naturalSize.height += (mImpl->mPadding.top + mImpl->mPadding.bottom);
 687     return Vector3(naturalSize);
 688   }
 689   return Vector3::ZERO;
 690 }
 691
 692 float Control::CalculateChildSize(const Dali::Actor& child, Dimension::Type dimension)
 693 {
 694   return CalculateChildSizeBase(child, dimension);
 695 }
 696
 697 float Control::GetHeightForWidth(float width)
 698 {
 699   return GetHeightForWidthBase(width);
 700 }
 701
 702 float Control::GetWidthForHeight(float height)
 703 {
 704   return GetWidthForHeightBase(height);
 705 }
 706
 707 bool Control::RelayoutDependentOnChildren(Dimension::Type dimension)
 708 {
 709   return RelayoutDependentOnChildrenBase(dimension);
 710 }
 711
 712 void Control::OnCalculateRelayoutSize(Dimension::Type dimension)
 713 {
 714 }
 715
 716 void Control::OnLayoutNegotiated(float size, Dimension::Type dimension)
 717 {
 718 }
 719
 720 void Control::SignalConnected(SlotObserver* slotObserver, CallbackBase* callback)
 721 {
 722   mImpl->SignalConnected(slotObserver, callback);
 723 }
 724
 725 void Control::SignalDisconnected(SlotObserver* slotObserver, CallbackBase* callback)
 726 {
 727   mImpl->SignalDisconnected(slotObserver, callback);
 728 }
 729
 730 void Control::MakeVisualTransition(Dali::Property::Map& sourcePropertyMap, Dali::Property::Map& destinationPropertyMap,
 731                                    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   {
 752     Property::Value* propertyValue = map.Find(index);
 753     if(propertyValue)
 754     {
 755       return propertyValue->Get<Vector4>();
 756     }
 757     return defaultValue;
 758   };
 759
 760   static auto findValueFloat = [](const Property::Map& map, Property::Index index, const float& defaultValue = 0.0f) -> float
 761   {
 762     Property::Value* propertyValue = map.Find(index);
 763     if(propertyValue)
 764     {
 765       return propertyValue->Get<float>();
 766     }
 767     return defaultValue;
 768   };
 769
 770   Vector4 defaultMixColor(Color::TRANSPARENT);
 771   Vector4 defaultCornerRadius(0.0f, 0.0f, 0.0f, 0.0f);
 772   float   defaultBorderlineWidth(0.0f);
 773   Vector4 defaultBorderlineColor(0.0f, 0.0f, 0.0f, 1.0f);
 774   float   defaultBorderlineOffset(0.0f);
 775
 776   Vector4 sourceMixColor         = findValueVector4(sourceMap, Dali::Toolkit::Visual::Property::MIX_COLOR, defaultMixColor);
 777   Vector4 sourceCornerRadius     = findValueVector4(sourceMap, Toolkit::DevelVisual::Property::CORNER_RADIUS, defaultCornerRadius);
 778   float   sourceBorderlineWidth  = findValueFloat(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, defaultBorderlineWidth);
 779   Vector4 sourceBorderlineColor  = findValueVector4(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_COLOR, defaultBorderlineColor);
 780   float   sourceBorderlineOffset = findValueFloat(sourceMap, Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, defaultBorderlineOffset);
 781
 782   Vector4 destinationMixColor         = findValueVector4(destinationMap, Dali::Toolkit::Visual::Property::MIX_COLOR, defaultMixColor);
 783   Vector4 destinationCornerRadius     = findValueVector4(destinationMap, Toolkit::DevelVisual::Property::CORNER_RADIUS, defaultCornerRadius);
 784   float   destinationBorderlineWidth  = findValueFloat(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, defaultBorderlineWidth);
 785   Vector4 destinationBorderlineColor  = findValueVector4(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_COLOR, defaultBorderlineColor);
 786   float   destinationBorderlineOffset = findValueFloat(destinationMap, Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, defaultBorderlineOffset);
 787
 788   // If the value of the source Control and that of destination Control is different, the property should be transitioned.
 789   if(Vector3(sourceMixColor) != Vector3(destinationMixColor))
 790   {
 791     sourcePropertyMap.Add(Dali::Toolkit::Visual::Property::MIX_COLOR, Vector3(sourceMixColor));
 792     destinationPropertyMap.Add(Dali::Toolkit::Visual::Property::MIX_COLOR, Vector3(destinationMixColor));
 793   }
 794
 795   if(std::abs(sourceMixColor.a - destinationMixColor.a) > Math::MACHINE_EPSILON_1)
 796   {
 797     sourcePropertyMap.Add(Dali::Toolkit::Visual::Property::OPACITY, sourceMixColor.a);
 798     destinationPropertyMap.Add(Dali::Toolkit::Visual::Property::OPACITY, destinationMixColor.a);
 799   }
 800
 801   if(sourceCornerRadius != destinationCornerRadius)
 802   {
 803     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::CORNER_RADIUS, sourceCornerRadius);
 804     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::CORNER_RADIUS, destinationCornerRadius);
 805   }
 806
 807   if(sourceBorderlineWidth != destinationBorderlineWidth)
 808   {
 809     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, sourceBorderlineWidth);
 810     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_WIDTH, destinationBorderlineWidth);
 811   }
 812
 813   if(sourceBorderlineColor != destinationBorderlineColor)
 814   {
 815     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_COLOR, sourceBorderlineColor);
 816     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_COLOR, destinationBorderlineColor);
 817   }
 818
 819   if(sourceBorderlineOffset != destinationBorderlineOffset)
 820   {
 821     sourcePropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, sourceBorderlineOffset);
 822     destinationPropertyMap.Add(Dali::Toolkit::DevelVisual::Property::BORDERLINE_OFFSET, destinationBorderlineOffset);
 823   }
 824 }
 825
 826 Control& GetImplementation(Dali::Toolkit::Control& handle)
 827 {
 828   CustomActorImpl& customInterface = handle.GetImplementation();
 829   // downcast to control
 830   Control& impl = dynamic_cast<Internal::Control&>(customInterface);
 831   return impl;
 832 }
 833
 834 const Control& GetImplementation(const Dali::Toolkit::Control& handle)
 835 {
 836   const CustomActorImpl& customInterface = handle.GetImplementation();
 837   // downcast to control
 838   const Control& impl = dynamic_cast<const Internal::Control&>(customInterface);
 839   return impl;
 840 }
 841
 842 } // namespace Internal
 843
 844 } // namespace Toolkit
 845
 846 } // namespace Dali