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