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

   1 /*
   2  * Copyright (c) 2016 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 <cstring> // for strcmp
  23 #include <limits>
  24 #include <stack>
  25 #include <dali/public-api/animation/constraint.h>
  26 #include <dali/public-api/animation/constraints.h>
  27 #include <dali/public-api/object/type-registry.h>
  28 #include <dali/public-api/object/type-registry-helper.h>
  29 #include <dali/public-api/rendering/renderer.h>
  30 #include <dali/public-api/size-negotiation/relayout-container.h>
  31 #include <dali/devel-api/scripting/scripting.h>
  32 #include <dali/integration-api/debug.h>
  33
  34 // INTERNAL INCLUDES
  35 #include <dali-toolkit/public-api/focus-manager/keyboard-focus-manager.h>
  36 #include <dali-toolkit/public-api/controls/control.h>
  37 #include <dali-toolkit/public-api/styling/style-manager.h>
  38 #include <dali-toolkit/public-api/visuals/color-visual-properties.h>
  39 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  40 #include <dali-toolkit/devel-api/visual-factory/visual-factory.h>
  41 #include <dali-toolkit/devel-api/focus-manager/keyinput-focus-manager.h>
  42 #include <dali-toolkit/devel-api/visuals/visual-properties-devel.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/internal/visuals/visual-base-impl.h>
  47
  48 namespace Dali
  49 {
  50
  51 namespace Toolkit
  52 {
  53
  54 namespace
  55 {
  56
  57 /**
  58  * Creates control through type registry
  59  */
  60 BaseHandle Create()
  61 {
  62   return Internal::Control::New();
  63 }
  64
  65 /**
  66  * Performs actions as requested using the action name.
  67  * @param[in] object The object on which to perform the action.
  68  * @param[in] actionName The action to perform.
  69  * @param[in] attributes The attributes with which to perfrom this action.
  70  * @return true if action has been accepted by this control
  71  */
  72 const char* ACTION_ACCESSIBILITY_ACTIVATED = "accessibilityActivated";
  73 static bool DoAction( BaseObject* object, const std::string& actionName, const Property::Map& attributes )
  74 {
  75   bool ret = false;
  76
  77   if( object && ( 0 == strcmp( actionName.c_str(), ACTION_ACCESSIBILITY_ACTIVATED ) ) )
  78   {
  79     Toolkit::Control control = Toolkit::Control::DownCast( BaseHandle( object ) );
  80     if( control )
  81     {
  82       // if cast succeeds there is an implementation so no need to check
  83       ret = Internal::GetImplementation( control ).OnAccessibilityActivated();
  84     }
  85   }
  86
  87   return ret;
  88 }
  89
  90 /**
  91  * Connects a callback function with the object's signals.
  92  * @param[in] object The object providing the signal.
  93  * @param[in] tracker Used to disconnect the signal.
  94  * @param[in] signalName The signal to connect to.
  95  * @param[in] functor A newly allocated FunctorDelegate.
  96  * @return True if the signal was connected.
  97  * @post If a signal was connected, ownership of functor was passed to CallbackBase. Otherwise the caller is responsible for deleting the unused functor.
  98  */
  99 const char* SIGNAL_KEY_EVENT = "keyEvent";
 100 const char* SIGNAL_KEY_INPUT_FOCUS_GAINED = "keyInputFocusGained";
 101 const char* SIGNAL_KEY_INPUT_FOCUS_LOST = "keyInputFocusLost";
 102 const char* SIGNAL_TAPPED = "tapped";
 103 const char* SIGNAL_PANNED = "panned";
 104 const char* SIGNAL_PINCHED = "pinched";
 105 const char* SIGNAL_LONG_PRESSED = "longPressed";
 106 static bool DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 107 {
 108   Dali::BaseHandle handle( object );
 109
 110   bool connected( false );
 111   Toolkit::Control control = Toolkit::Control::DownCast( handle );
 112   if ( control )
 113   {
 114     Internal::Control& controlImpl( Internal::GetImplementation( control ) );
 115     connected = true;
 116
 117     if ( 0 == strcmp( signalName.c_str(), SIGNAL_KEY_EVENT ) )
 118     {
 119       controlImpl.KeyEventSignal().Connect( tracker, functor );
 120     }
 121     else if( 0 == strcmp( signalName.c_str(), SIGNAL_KEY_INPUT_FOCUS_GAINED ) )
 122     {
 123       controlImpl.KeyInputFocusGainedSignal().Connect( tracker, functor );
 124     }
 125     else if( 0 == strcmp( signalName.c_str(), SIGNAL_KEY_INPUT_FOCUS_LOST ) )
 126     {
 127       controlImpl.KeyInputFocusLostSignal().Connect( tracker, functor );
 128     }
 129     else if( 0 == strcmp( signalName.c_str(), SIGNAL_TAPPED ) )
 130     {
 131       controlImpl.EnableGestureDetection( Gesture::Tap );
 132       controlImpl.GetTapGestureDetector().DetectedSignal().Connect( tracker, functor );
 133     }
 134     else if( 0 == strcmp( signalName.c_str(), SIGNAL_PANNED ) )
 135     {
 136       controlImpl.EnableGestureDetection( Gesture::Pan );
 137       controlImpl.GetPanGestureDetector().DetectedSignal().Connect( tracker, functor );
 138     }
 139     else if( 0 == strcmp( signalName.c_str(), SIGNAL_PINCHED ) )
 140     {
 141       controlImpl.EnableGestureDetection( Gesture::Pinch );
 142       controlImpl.GetPinchGestureDetector().DetectedSignal().Connect( tracker, functor );
 143     }
 144     else if( 0 == strcmp( signalName.c_str(), SIGNAL_LONG_PRESSED ) )
 145     {
 146       controlImpl.EnableGestureDetection( Gesture::LongPress );
 147       controlImpl.GetLongPressGestureDetector().DetectedSignal().Connect( tracker, functor );
 148     }
 149   }
 150   return connected;
 151 }
 152
 153 // Setup signals and actions using the type-registry.
 154 DALI_TYPE_REGISTRATION_BEGIN( Control, CustomActor, Create );
 155
 156 // Note: Properties are registered separately below.
 157
 158 SignalConnectorType registerSignal1( typeRegistration, SIGNAL_KEY_EVENT, &DoConnectSignal );
 159 SignalConnectorType registerSignal2( typeRegistration, SIGNAL_KEY_INPUT_FOCUS_GAINED, &DoConnectSignal );
 160 SignalConnectorType registerSignal3( typeRegistration, SIGNAL_KEY_INPUT_FOCUS_LOST, &DoConnectSignal );
 161 SignalConnectorType registerSignal4( typeRegistration, SIGNAL_TAPPED, &DoConnectSignal );
 162 SignalConnectorType registerSignal5( typeRegistration, SIGNAL_PANNED, &DoConnectSignal );
 163 SignalConnectorType registerSignal6( typeRegistration, SIGNAL_PINCHED, &DoConnectSignal );
 164 SignalConnectorType registerSignal7( typeRegistration, SIGNAL_LONG_PRESSED, &DoConnectSignal );
 165
 166 TypeAction registerAction( typeRegistration, ACTION_ACCESSIBILITY_ACTIVATED, &DoAction );
 167
 168 DALI_TYPE_REGISTRATION_END()
 169
 170 } // unnamed namespace
 171
 172 namespace Internal
 173 {
 174
 175 class Control::Impl : public ConnectionTracker
 176 {
 177 public:
 178
 179   // Construction & Destruction
 180   Impl(Control& controlImpl)
 181 : mControlImpl( controlImpl ),
 182   mStyleName(""),
 183   mBackgroundVisual(),
 184   mBackgroundColor(Color::TRANSPARENT),
 185   mStartingPinchScale( NULL ),
 186   mKeyEventSignal(),
 187   mPinchGestureDetector(),
 188   mPanGestureDetector(),
 189   mTapGestureDetector(),
 190   mLongPressGestureDetector(),
 191   mFlags( Control::ControlBehaviour( CONTROL_BEHAVIOUR_DEFAULT ) ),
 192   mIsKeyboardNavigationSupported( false ),
 193   mIsKeyboardFocusGroup( false )
 194 {
 195 }
 196
 197   ~Impl()
 198   {
 199     // All gesture detectors will be destroyed so no need to disconnect.
 200     delete mStartingPinchScale;
 201   }
 202
 203   // Gesture Detection Methods
 204
 205   void PinchDetected(Actor actor, const PinchGesture& pinch)
 206   {
 207     mControlImpl.OnPinch(pinch);
 208   }
 209
 210   void PanDetected(Actor actor, const PanGesture& pan)
 211   {
 212     mControlImpl.OnPan(pan);
 213   }
 214
 215   void TapDetected(Actor actor, const TapGesture& tap)
 216   {
 217     mControlImpl.OnTap(tap);
 218   }
 219
 220   void LongPressDetected(Actor actor, const LongPressGesture& longPress)
 221   {
 222     mControlImpl.OnLongPress(longPress);
 223   }
 224
 225   // Properties
 226
 227   /**
 228    * Called when a property of an object of this type is set.
 229    * @param[in] object The object whose property is set.
 230    * @param[in] index The property index.
 231    * @param[in] value The new property value.
 232    */
 233   static void SetProperty( BaseObject* object, Property::Index index, const Property::Value& value )
 234   {
 235     Toolkit::Control control = Toolkit::Control::DownCast( BaseHandle( object ) );
 236
 237     if ( control )
 238     {
 239       Control& controlImpl( GetImplementation( control ) );
 240
 241       switch ( index )
 242       {
 243         case Toolkit::Control::Property::STYLE_NAME:
 244         {
 245           controlImpl.SetStyleName( value.Get< std::string >() );
 246           break;
 247         }
 248
 249         case Toolkit::Control::Property::BACKGROUND_COLOR:
 250         {
 251           DALI_LOG_WARNING( "BACKGROUND_COLOR property is deprecated. Use BACKGROUND property instead\n" );
 252           controlImpl.SetBackgroundColor( value.Get< Vector4 >() );
 253           break;
 254         }
 255
 256         case Toolkit::Control::Property::BACKGROUND_IMAGE:
 257         {
 258           DALI_LOG_WARNING( "BACKGROUND_IMAGE property is deprecated. Use BACKGROUND property instead\n" );
 259           Image image = Scripting::NewImage( value );
 260           if ( image )
 261           {
 262             controlImpl.SetBackgroundImage( image );
 263           }
 264           else
 265           {
 266             // An empty map means the background is no longer required
 267             controlImpl.ClearBackground();
 268           }
 269           break;
 270         }
 271
 272         case Toolkit::Control::Property::KEY_INPUT_FOCUS:
 273         {
 274           if ( value.Get< bool >() )
 275           {
 276             controlImpl.SetKeyInputFocus();
 277           }
 278           else
 279           {
 280             controlImpl.ClearKeyInputFocus();
 281           }
 282           break;
 283         }
 284
 285         case Toolkit::Control::Property::BACKGROUND:
 286         {
 287           const Property::Map* map = value.GetMap();
 288           if( map )
 289           {
 290             controlImpl.SetBackground( *map );
 291           }
 292           else
 293           {
 294             // The background is not a property map, so we should clear the background
 295             controlImpl.ClearBackground();
 296           }
 297           break;
 298         }
 299       }
 300     }
 301   }
 302
 303   /**
 304    * Called to retrieve a property of an object of this type.
 305    * @param[in] object The object whose property is to be retrieved.
 306    * @param[in] index The property index.
 307    * @return The current value of the property.
 308    */
 309   static Property::Value GetProperty( BaseObject* object, Property::Index index )
 310   {
 311     Property::Value value;
 312
 313     Toolkit::Control control = Toolkit::Control::DownCast( BaseHandle( object ) );
 314
 315     if ( control )
 316     {
 317       Control& controlImpl( GetImplementation( control ) );
 318
 319       switch ( index )
 320       {
 321         case Toolkit::Control::Property::STYLE_NAME:
 322         {
 323           value = controlImpl.GetStyleName();
 324           break;
 325         }
 326
 327         case Toolkit::Control::Property::BACKGROUND_COLOR:
 328         {
 329           DALI_LOG_WARNING( "BACKGROUND_COLOR property is deprecated. Use BACKGROUND property instead\n" );
 330           value = controlImpl.GetBackgroundColor();
 331           break;
 332         }
 333
 334         case Toolkit::Control::Property::BACKGROUND_IMAGE:
 335         {
 336           DALI_LOG_WARNING( "BACKGROUND_IMAGE property is deprecated. Use BACKGROUND property instead\n" );
 337           Property::Map map;
 338           if( controlImpl.mImpl->mBackgroundVisual )
 339           {
 340             controlImpl.mImpl->mBackgroundVisual.CreatePropertyMap( map );
 341           }
 342           value = map;
 343           break;
 344         }
 345
 346         case Toolkit::Control::Property::KEY_INPUT_FOCUS:
 347         {
 348           value = controlImpl.HasKeyInputFocus();
 349           break;
 350         }
 351
 352         case Toolkit::Control::Property::BACKGROUND:
 353         {
 354           Property::Map map;
 355           if( controlImpl.mImpl->mBackgroundVisual )
 356           {
 357             (controlImpl.mImpl->mBackgroundVisual).CreatePropertyMap( map );
 358           }
 359
 360           value = map;
 361           break;
 362         }
 363
 364       }
 365     }
 366
 367     return value;
 368   }
 369
 370   // Data
 371
 372   Control& mControlImpl;
 373   std::string mStyleName;
 374   Toolkit::Visual::Base mBackgroundVisual;   ///< The visual to render the background
 375   Vector4 mBackgroundColor;                       ///< The color of the background visual
 376   Vector3* mStartingPinchScale;      ///< The scale when a pinch gesture starts, TODO: consider removing this
 377   Toolkit::Control::KeyEventSignalType mKeyEventSignal;
 378   Toolkit::Control::KeyInputFocusSignalType mKeyInputFocusGainedSignal;
 379   Toolkit::Control::KeyInputFocusSignalType mKeyInputFocusLostSignal;
 380
 381   // Gesture Detection
 382   PinchGestureDetector mPinchGestureDetector;
 383   PanGestureDetector mPanGestureDetector;
 384   TapGestureDetector mTapGestureDetector;
 385   LongPressGestureDetector mLongPressGestureDetector;
 386
 387   ControlBehaviour mFlags : CONTROL_BEHAVIOUR_FLAG_COUNT;    ///< Flags passed in from constructor.
 388   bool mIsKeyboardNavigationSupported :1;  ///< Stores whether keyboard navigation is supported by the control.
 389   bool mIsKeyboardFocusGroup :1;           ///< Stores whether the control is a focus group.
 390
 391   // Properties - these need to be members of Internal::Control::Impl as they need to function within this class.
 392   static const PropertyRegistration PROPERTY_1;
 393   static const PropertyRegistration PROPERTY_2;
 394   static const PropertyRegistration PROPERTY_3;
 395   static const PropertyRegistration PROPERTY_4;
 396   static const PropertyRegistration PROPERTY_5;
 397 };
 398
 399 // Properties registered without macro to use specific member variables.
 400 const PropertyRegistration Control::Impl::PROPERTY_1( typeRegistration, "styleName",       Toolkit::Control::Property::STYLE_NAME,       Property::STRING,  &Control::Impl::SetProperty, &Control::Impl::GetProperty );
 401 const PropertyRegistration Control::Impl::PROPERTY_2( typeRegistration, "backgroundColor", Toolkit::Control::Property::BACKGROUND_COLOR, Property::VECTOR4, &Control::Impl::SetProperty, &Control::Impl::GetProperty );
 402 const PropertyRegistration Control::Impl::PROPERTY_3( typeRegistration, "backgroundImage", Toolkit::Control::Property::BACKGROUND_IMAGE, Property::MAP,     &Control::Impl::SetProperty, &Control::Impl::GetProperty );
 403 const PropertyRegistration Control::Impl::PROPERTY_4( typeRegistration, "keyInputFocus",   Toolkit::Control::Property::KEY_INPUT_FOCUS,  Property::BOOLEAN, &Control::Impl::SetProperty, &Control::Impl::GetProperty );
 404 const PropertyRegistration Control::Impl::PROPERTY_5( typeRegistration, "background",      Toolkit::Control::Property::BACKGROUND,       Property::MAP,     &Control::Impl::SetProperty, &Control::Impl::GetProperty );
 405
 406 Toolkit::Control Control::New()
 407 {
 408   // Create the implementation, temporarily owned on stack
 409   IntrusivePtr<Control> controlImpl = new Control( ControlBehaviour( CONTROL_BEHAVIOUR_DEFAULT ) );
 410
 411   // Pass ownership to handle
 412   Toolkit::Control handle( *controlImpl );
 413
 414   // Second-phase init of the implementation
 415   // This can only be done after the CustomActor connection has been made...
 416   controlImpl->Initialize();
 417
 418   return handle;
 419 }
 420
 421 void Control::SetStyleName( const std::string& styleName )
 422 {
 423   if( styleName != mImpl->mStyleName )
 424   {
 425     mImpl->mStyleName = styleName;
 426
 427     // Apply new style, if stylemanager is available
 428     Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
 429     if( styleManager )
 430     {
 431       GetImpl( styleManager ).ApplyThemeStyle( Toolkit::Control( GetOwner() ) );
 432     }
 433   }
 434 }
 435
 436 const std::string& Control::GetStyleName() const
 437 {
 438   return mImpl->mStyleName;
 439 }
 440
 441 void Control::SetBackgroundColor( const Vector4& color )
 442 {
 443   Actor self( Self() );
 444   mImpl->mBackgroundColor = color;
 445   Property::Map map;
 446   map[ Toolkit::Visual::Property::TYPE ] = Toolkit::Visual::COLOR;
 447   map[ Toolkit::ColorVisual::Property::MIX_COLOR ] = color;
 448   InitializeVisual( self, mImpl->mBackgroundVisual, map );
 449   if( mImpl->mBackgroundVisual )
 450   {
 451     mImpl->mBackgroundVisual.SetDepthIndex( DepthIndex::BACKGROUND );
 452   }
 453 }
 454
 455 Vector4 Control::GetBackgroundColor() const
 456 {
 457   return mImpl->mBackgroundColor;
 458 }
 459
 460 void Control::SetBackground( const Property::Map& map )
 461 {
 462   Actor self( Self() );
 463   Toolkit::Visual::Base backgroundVisual = Toolkit::VisualFactory::Get().CreateVisual( map );
 464
 465   // if new visual created, replace existing one
 466   if( backgroundVisual )
 467   {
 468     if( self.OnStage() )
 469     {
 470       mImpl->mBackgroundVisual.RemoveAndReset( self );
 471       backgroundVisual.SetOnStage( self );
 472     }
 473     mImpl->mBackgroundVisual = backgroundVisual;
 474     mImpl->mBackgroundVisual.SetDepthIndex( DepthIndex::BACKGROUND );
 475   }
 476   // ...otherwise process map and apply it to the existing visual
 477   else if( mImpl->mBackgroundVisual )
 478   {
 479     Property::Value* premultipliedAlpha = map.Find( Toolkit::DevelVisual::Property::PREMULTIPLIED_ALPHA, Toolkit::Internal::PREMULTIPLIED_ALPHA );
 480     if( premultipliedAlpha )
 481     {
 482       bool value( premultipliedAlpha->Get<bool>() );
 483       Toolkit::GetImplementation( mImpl->mBackgroundVisual ).EnablePreMultipliedAlpha( value );
 484     }
 485   }
 486 }
 487
 488 void Control::SetBackgroundImage( Image image )
 489 {
 490   Actor self( Self() );
 491   InitializeVisual( self, mImpl->mBackgroundVisual, image );
 492   if( mImpl->mBackgroundVisual )
 493   {
 494     mImpl->mBackgroundVisual.SetDepthIndex( DepthIndex::BACKGROUND );
 495   }
 496 }
 497
 498 void Control::ClearBackground()
 499 {
 500   Actor self( Self() );
 501   mImpl->mBackgroundVisual.RemoveAndReset( self );
 502   mImpl->mBackgroundColor = Color::TRANSPARENT;
 503 }
 504
 505 void Control::EnableGestureDetection(Gesture::Type type)
 506 {
 507   if ( (type & Gesture::Pinch) && !mImpl->mPinchGestureDetector )
 508   {
 509     mImpl->mPinchGestureDetector = PinchGestureDetector::New();
 510     mImpl->mPinchGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PinchDetected);
 511     mImpl->mPinchGestureDetector.Attach(Self());
 512   }
 513
 514   if ( (type & Gesture::Pan) && !mImpl->mPanGestureDetector )
 515   {
 516     mImpl->mPanGestureDetector = PanGestureDetector::New();
 517     mImpl->mPanGestureDetector.DetectedSignal().Connect(mImpl, &Impl::PanDetected);
 518     mImpl->mPanGestureDetector.Attach(Self());
 519   }
 520
 521   if ( (type & Gesture::Tap) && !mImpl->mTapGestureDetector )
 522   {
 523     mImpl->mTapGestureDetector = TapGestureDetector::New();
 524     mImpl->mTapGestureDetector.DetectedSignal().Connect(mImpl, &Impl::TapDetected);
 525     mImpl->mTapGestureDetector.Attach(Self());
 526   }
 527
 528   if ( (type & Gesture::LongPress) && !mImpl->mLongPressGestureDetector )
 529   {
 530     mImpl->mLongPressGestureDetector = LongPressGestureDetector::New();
 531     mImpl->mLongPressGestureDetector.DetectedSignal().Connect(mImpl, &Impl::LongPressDetected);
 532     mImpl->mLongPressGestureDetector.Attach(Self());
 533   }
 534 }
 535
 536 void Control::DisableGestureDetection(Gesture::Type type)
 537 {
 538   if ( (type & Gesture::Pinch) && mImpl->mPinchGestureDetector )
 539   {
 540     mImpl->mPinchGestureDetector.Detach(Self());
 541     mImpl->mPinchGestureDetector.Reset();
 542   }
 543
 544   if ( (type & Gesture::Pan) && mImpl->mPanGestureDetector )
 545   {
 546     mImpl->mPanGestureDetector.Detach(Self());
 547     mImpl->mPanGestureDetector.Reset();
 548   }
 549
 550   if ( (type & Gesture::Tap) && mImpl->mTapGestureDetector )
 551   {
 552     mImpl->mTapGestureDetector.Detach(Self());
 553     mImpl->mTapGestureDetector.Reset();
 554   }
 555
 556   if ( (type & Gesture::LongPress) && mImpl->mLongPressGestureDetector)
 557   {
 558     mImpl->mLongPressGestureDetector.Detach(Self());
 559     mImpl->mLongPressGestureDetector.Reset();
 560   }
 561 }
 562
 563 PinchGestureDetector Control::GetPinchGestureDetector() const
 564 {
 565   return mImpl->mPinchGestureDetector;
 566 }
 567
 568 PanGestureDetector Control::GetPanGestureDetector() const
 569 {
 570   return mImpl->mPanGestureDetector;
 571 }
 572
 573 TapGestureDetector Control::GetTapGestureDetector() const
 574 {
 575   return mImpl->mTapGestureDetector;
 576 }
 577
 578 LongPressGestureDetector Control::GetLongPressGestureDetector() const
 579 {
 580   return mImpl->mLongPressGestureDetector;
 581 }
 582
 583 void Control::SetKeyboardNavigationSupport(bool isSupported)
 584 {
 585   mImpl->mIsKeyboardNavigationSupported = isSupported;
 586 }
 587
 588 bool Control::IsKeyboardNavigationSupported()
 589 {
 590   return mImpl->mIsKeyboardNavigationSupported;
 591 }
 592
 593 void Control::SetKeyInputFocus()
 594 {
 595   if( Self().OnStage() )
 596   {
 597     Toolkit::KeyInputFocusManager::Get().SetFocus(Toolkit::Control::DownCast(Self()));
 598   }
 599 }
 600
 601 bool Control::HasKeyInputFocus()
 602 {
 603   bool result = false;
 604   if( Self().OnStage() )
 605   {
 606     result = Toolkit::KeyInputFocusManager::Get().IsKeyboardListener(Toolkit::Control::DownCast(Self()));
 607   }
 608   return result;
 609 }
 610
 611 void Control::ClearKeyInputFocus()
 612 {
 613   if( Self().OnStage() )
 614   {
 615     Toolkit::KeyInputFocusManager::Get().RemoveFocus(Toolkit::Control::DownCast(Self()));
 616   }
 617 }
 618
 619 void Control::SetAsKeyboardFocusGroup(bool isFocusGroup)
 620 {
 621   mImpl->mIsKeyboardFocusGroup = isFocusGroup;
 622
 623   // The following line will be removed when the deprecated API in KeyboardFocusManager is deleted
 624   Toolkit::KeyboardFocusManager::Get().SetAsFocusGroup(Self(), isFocusGroup);
 625 }
 626
 627 bool Control::IsKeyboardFocusGroup()
 628 {
 629   return Toolkit::KeyboardFocusManager::Get().IsFocusGroup(Self());
 630 }
 631
 632 void Control::AccessibilityActivate()
 633 {
 634   // Inform deriving classes
 635   OnAccessibilityActivated();
 636 }
 637
 638 void Control::KeyboardEnter()
 639 {
 640   // Inform deriving classes
 641   OnKeyboardEnter();
 642 }
 643
 644 bool Control::OnAccessibilityActivated()
 645 {
 646   return false; // Accessibility activation is not handled by default
 647 }
 648
 649 bool Control::OnKeyboardEnter()
 650 {
 651   return false; // Keyboard enter is not handled by default
 652 }
 653
 654 bool Control::OnAccessibilityPan(PanGesture gesture)
 655 {
 656   return false; // Accessibility pan gesture is not handled by default
 657 }
 658
 659 bool Control::OnAccessibilityTouch(const TouchEvent& touchEvent)
 660 {
 661   return false; // Accessibility touch event is not handled by default
 662 }
 663
 664 bool Control::OnAccessibilityValueChange(bool isIncrease)
 665 {
 666   return false; // Accessibility value change action is not handled by default
 667 }
 668
 669 bool Control::OnAccessibilityZoom()
 670 {
 671   return false; // Accessibility zoom action is not handled by default
 672 }
 673
 674 Actor Control::GetNextKeyboardFocusableActor(Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 675 {
 676   return Actor();
 677 }
 678
 679 void Control::OnKeyboardFocusChangeCommitted(Actor commitedFocusableActor)
 680 {
 681 }
 682
 683 Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
 684 {
 685   return mImpl->mKeyEventSignal;
 686 }
 687
 688 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusGainedSignal()
 689 {
 690   return mImpl->mKeyInputFocusGainedSignal;
 691 }
 692
 693 Toolkit::Control::KeyInputFocusSignalType& Control::KeyInputFocusLostSignal()
 694 {
 695   return mImpl->mKeyInputFocusLostSignal;
 696 }
 697
 698 bool Control::EmitKeyEventSignal( const KeyEvent& event )
 699 {
 700   // Guard against destruction during signal emission
 701   Dali::Toolkit::Control handle( GetOwner() );
 702
 703   bool consumed = false;
 704
 705   // signals are allocated dynamically when someone connects
 706   if ( !mImpl->mKeyEventSignal.Empty() )
 707   {
 708     consumed = mImpl->mKeyEventSignal.Emit( handle, event );
 709   }
 710
 711   if (!consumed)
 712   {
 713     // Notification for derived classes
 714     consumed = OnKeyEvent(event);
 715   }
 716
 717   return consumed;
 718 }
 719
 720 Control::Control( ControlBehaviour behaviourFlags )
 721 : CustomActorImpl( static_cast< ActorFlags >( behaviourFlags ) ),
 722   mImpl(new Impl(*this))
 723 {
 724   mImpl->mFlags = behaviourFlags;
 725 }
 726
 727 Control::~Control()
 728 {
 729   delete mImpl;
 730 }
 731
 732 void Control::Initialize()
 733 {
 734   // Call deriving classes so initialised before styling is applied to them.
 735   OnInitialize();
 736
 737   if( (mImpl->mFlags & REQUIRES_STYLE_CHANGE_SIGNALS) ||
 738       !(mImpl->mFlags & DISABLE_STYLE_CHANGE_SIGNALS) )
 739   {
 740     Toolkit::StyleManager styleManager = StyleManager::Get();
 741
 742     // if stylemanager is available
 743     if( styleManager )
 744     {
 745       StyleManager& styleManagerImpl = GetImpl( styleManager );
 746
 747       // Register for style changes
 748       styleManagerImpl.ControlStyleChangeSignal().Connect( this, &Control::OnStyleChange );
 749
 750       // Apply the current style
 751       styleManagerImpl.ApplyThemeStyleAtInit( Toolkit::Control( GetOwner() ) );
 752     }
 753   }
 754
 755   if( mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT )
 756   {
 757     SetKeyboardNavigationSupport( true );
 758   }
 759 }
 760
 761 void Control::OnInitialize()
 762 {
 763 }
 764
 765 void Control::OnControlChildAdd( Actor& child )
 766 {
 767   DALI_LOG_WARNING_NOFN("DEPRECATION WARNING: OnControlChildAdd() is deprecated and will be removed from next release. Override OnChildAdd instead.\n" );
 768 }
 769
 770 void Control::OnControlChildRemove( Actor& child )
 771 {
 772   DALI_LOG_WARNING_NOFN("DEPRECATION WARNING: OnControlChildRemove() is deprecated and will be removed from next release. Override OnChildRemove instead.\n" );
 773 }
 774
 775 void Control::OnStyleChange( Toolkit::StyleManager styleManager, StyleChange::Type change )
 776 {
 777   // By default the control is only interested in theme (not font) changes
 778   if( styleManager && change == StyleChange::THEME_CHANGE )
 779   {
 780     GetImpl( styleManager ).ApplyThemeStyle( Toolkit::Control( GetOwner() ) );
 781   }
 782   RelayoutRequest();
 783 }
 784
 785 void Control::OnPinch(const PinchGesture& pinch)
 786 {
 787   if( !( mImpl->mStartingPinchScale ) )
 788   {
 789     // lazy allocate
 790     mImpl->mStartingPinchScale = new Vector3;
 791   }
 792
 793   if( pinch.state == Gesture::Started )
 794   {
 795     *( mImpl->mStartingPinchScale ) = Self().GetCurrentScale();
 796   }
 797
 798   Self().SetScale( *( mImpl->mStartingPinchScale ) * pinch.scale );
 799 }
 800
 801 void Control::OnPan( const PanGesture& pan )
 802 {
 803 }
 804
 805 void Control::OnTap(const TapGesture& tap)
 806 {
 807 }
 808
 809 void Control::OnLongPress( const LongPressGesture& longPress )
 810 {
 811 }
 812
 813 void Control::EmitKeyInputFocusSignal( bool focusGained )
 814 {
 815   Dali::Toolkit::Control handle( GetOwner() );
 816
 817   if ( focusGained )
 818   {
 819     // signals are allocated dynamically when someone connects
 820     if ( !mImpl->mKeyInputFocusGainedSignal.Empty() )
 821     {
 822       mImpl->mKeyInputFocusGainedSignal.Emit( handle );
 823     }
 824   }
 825   else
 826   {
 827     // signals are allocated dynamically when someone connects
 828     if ( !mImpl->mKeyInputFocusLostSignal.Empty() )
 829     {
 830       mImpl->mKeyInputFocusLostSignal.Emit( handle );
 831     }
 832   }
 833 }
 834
 835 void Control::OnStageConnection( int depth )
 836 {
 837   if( mImpl->mBackgroundVisual)
 838   {
 839     Actor self( Self() );
 840     mImpl->mBackgroundVisual.SetOnStage( self );
 841   }
 842 }
 843
 844 void Control::OnStageDisconnection()
 845 {
 846   if( mImpl->mBackgroundVisual )
 847   {
 848     Actor self( Self() );
 849     mImpl->mBackgroundVisual.SetOffStage( self );
 850   }
 851 }
 852
 853 void Control::OnKeyInputFocusGained()
 854 {
 855   EmitKeyInputFocusSignal( true );
 856 }
 857
 858 void Control::OnKeyInputFocusLost()
 859 {
 860   EmitKeyInputFocusSignal( false );
 861 }
 862
 863 void Control::OnChildAdd(Actor& child)
 864 {
 865   // Notify derived classes.
 866   OnControlChildAdd( child );
 867 }
 868
 869 void Control::OnChildRemove(Actor& child)
 870 {
 871   // Notify derived classes.
 872   OnControlChildRemove( child );
 873 }
 874
 875 void Control::OnSizeSet(const Vector3& targetSize)
 876 {
 877   if( mImpl->mBackgroundVisual )
 878   {
 879     Vector2 size( targetSize );
 880     mImpl->mBackgroundVisual.SetSize( size );
 881   }
 882 }
 883
 884 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 885 {
 886   // @todo size negotiate background to new size, animate as well?
 887 }
 888
 889 bool Control::OnTouchEvent(const TouchEvent& event)
 890 {
 891   return false; // Do not consume
 892 }
 893
 894 bool Control::OnHoverEvent(const HoverEvent& event)
 895 {
 896   return false; // Do not consume
 897 }
 898
 899 bool Control::OnKeyEvent(const KeyEvent& event)
 900 {
 901   return false; // Do not consume
 902 }
 903
 904 bool Control::OnWheelEvent(const WheelEvent& event)
 905 {
 906   return false; // Do not consume
 907 }
 908
 909 void Control::OnRelayout( const Vector2& size, RelayoutContainer& container )
 910 {
 911   for( unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i )
 912   {
 913     container.Add( Self().GetChildAt( i ), size );
 914   }
 915 }
 916
 917 void Control::OnSetResizePolicy( ResizePolicy::Type policy, Dimension::Type dimension )
 918 {
 919 }
 920
 921 Vector3 Control::GetNaturalSize()
 922 {
 923   if( mImpl->mBackgroundVisual )
 924   {
 925     Vector2 naturalSize;
 926     mImpl->mBackgroundVisual.GetNaturalSize(naturalSize);
 927     return Vector3(naturalSize);
 928   }
 929   return Vector3::ZERO;
 930 }
 931
 932 float Control::CalculateChildSize( const Dali::Actor& child, Dimension::Type dimension )
 933 {
 934   return CalculateChildSizeBase( child, dimension );
 935 }
 936
 937 float Control::GetHeightForWidth( float width )
 938 {
 939   return GetHeightForWidthBase( width );
 940 }
 941
 942 float Control::GetWidthForHeight( float height )
 943 {
 944   return GetWidthForHeightBase( height );
 945 }
 946
 947 bool Control::RelayoutDependentOnChildren( Dimension::Type dimension )
 948 {
 949   return RelayoutDependentOnChildrenBase( dimension );
 950 }
 951
 952 void Control::OnCalculateRelayoutSize( Dimension::Type dimension )
 953 {
 954 }
 955
 956 void Control::OnLayoutNegotiated( float size, Dimension::Type dimension )
 957 {
 958 }
 959
 960 void Control::SignalConnected( SlotObserver* slotObserver, CallbackBase* callback )
 961 {
 962   mImpl->SignalConnected( slotObserver, callback );
 963 }
 964
 965 void Control::SignalDisconnected( SlotObserver* slotObserver, CallbackBase* callback )
 966 {
 967   mImpl->SignalDisconnected( slotObserver, callback );
 968 }
 969
 970 Control& GetImplementation( Dali::Toolkit::Control& handle )
 971 {
 972   CustomActorImpl& customInterface = handle.GetImplementation();
 973   // downcast to control
 974   Control& impl = dynamic_cast< Internal::Control& >( customInterface );
 975   return impl;
 976 }
 977
 978 const Control& GetImplementation( const Dali::Toolkit::Control& handle )
 979 {
 980   const CustomActorImpl& customInterface = handle.GetImplementation();
 981   // downcast to control
 982   const Control& impl = dynamic_cast< const Internal::Control& >( customInterface );
 983   return impl;
 984 }
 985
 986 } // namespace Internal
 987
 988 } // namespace Toolkit
 989
 990 } // namespace Dali