X-Git-Url: http://review.tizen.org/git/?p=platform%2Fcore%2Fuifw%2Fdali-toolkit.git;a=blobdiff_plain;f=dali-toolkit%2Finternal%2Fcontrols%2Fscroll-bar%2Fscroll-bar-impl.cpp;h=b1b09d1ecea9ebe17b09b6ae1fe04881c3a444d7;hp=ddf5738ffe16ba26fe7e57a70e4eee32675c30c7;hb=f546dd5d83a968e573f8f053a01ce43df32c71a0;hpb=7a369e9fac30bd1b96659d74a706798619b5d215 diff --git a/dali-toolkit/internal/controls/scroll-bar/scroll-bar-impl.cpp b/dali-toolkit/internal/controls/scroll-bar/scroll-bar-impl.cpp old mode 100755 new mode 100644 index ddf5738..b1b09d1 --- a/dali-toolkit/internal/controls/scroll-bar/scroll-bar-impl.cpp +++ b/dali-toolkit/internal/controls/scroll-bar/scroll-bar-impl.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017 Samsung Electronics Co., Ltd. + * Copyright (c) 2020 Samsung Electronics Co., Ltd. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -22,13 +22,15 @@ #include // for strcmp #include #include -#include #include #include #include #include +#include +#include // INTERNAL INCLUDES +#include #include #include @@ -37,7 +39,7 @@ using namespace Dali; namespace { -const char* DEFAULT_INDICATOR_IMAGE_PATH = DALI_IMAGE_DIR "popup_scroll.9.png"; +const char* DEFAULT_INDICATOR_IMAGE_FILE_NAME = "popup_scroll.9.png"; const float DEFAULT_SLIDER_DEPTH(1.0f); const float DEFAULT_INDICATOR_SHOW_DURATION(0.5f); const float DEFAULT_INDICATOR_HIDE_DURATION(0.5f); @@ -46,6 +48,7 @@ const float DEFAULT_INDICATOR_FIXED_HEIGHT(80.0f); const float DEFAULT_INDICATOR_MINIMUM_HEIGHT(0.0f); const float DEFAULT_INDICATOR_START_PADDING(0.0f); const float DEFAULT_INDICATOR_END_PADDING(0.0f); +const float DEFAULT_INDICATOR_TRANSIENT_DURATION(1.0f); /** * Indicator size constraint @@ -154,23 +157,28 @@ BaseHandle Create() // Setup properties, signals and actions using the type-registry. DALI_TYPE_REGISTRATION_BEGIN( Toolkit::ScrollBar, Toolkit::Control, Create ); -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "scrollDirection", STRING, SCROLL_DIRECTION ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorHeightPolicy", STRING, INDICATOR_HEIGHT_POLICY ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorFixedHeight", FLOAT, INDICATOR_FIXED_HEIGHT ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorShowDuration", FLOAT, INDICATOR_SHOW_DURATION ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorHideDuration", FLOAT, INDICATOR_HIDE_DURATION ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "scrollPositionIntervals", ARRAY, SCROLL_POSITION_INTERVALS ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorMinimumHeight", FLOAT, INDICATOR_MINIMUM_HEIGHT ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorStartPadding", FLOAT, INDICATOR_START_PADDING ) -DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorEndPadding", FLOAT, INDICATOR_END_PADDING ) - -DALI_SIGNAL_REGISTRATION( Toolkit, ScrollBar, "panFinished", PAN_FINISHED_SIGNAL ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "scrollDirection", STRING, SCROLL_DIRECTION ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorHeightPolicy", STRING, INDICATOR_HEIGHT_POLICY ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorFixedHeight", FLOAT, INDICATOR_FIXED_HEIGHT ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorShowDuration", FLOAT, INDICATOR_SHOW_DURATION ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorHideDuration", FLOAT, INDICATOR_HIDE_DURATION ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "scrollPositionIntervals", ARRAY, SCROLL_POSITION_INTERVALS ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorMinimumHeight", FLOAT, INDICATOR_MINIMUM_HEIGHT ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorStartPadding", FLOAT, INDICATOR_START_PADDING ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorEndPadding", FLOAT, INDICATOR_END_PADDING ) +DALI_PROPERTY_REGISTRATION( Toolkit, ScrollBar, "indicatorTransientDuration", FLOAT, INDICATOR_TRANSIENT_DURATION ) + +DALI_SIGNAL_REGISTRATION( Toolkit, ScrollBar, "panFinished", PAN_FINISHED_SIGNAL ) DALI_SIGNAL_REGISTRATION( Toolkit, ScrollBar, "scrollPositionIntervalReached", SCROLL_POSITION_INTERVAL_REACHED_SIGNAL ) +DALI_ACTION_REGISTRATION( Toolkit, ScrollBar, "ShowIndicator", ACTION_SHOW_INDICATOR ) +DALI_ACTION_REGISTRATION( Toolkit, ScrollBar, "HideIndicator", ACTION_HIDE_INDICATOR ) +DALI_ACTION_REGISTRATION( Toolkit, ScrollBar, "ShowTransientIndicator", ACTION_SHOW_TRANSIENT_INDICATOR ) + DALI_TYPE_REGISTRATION_END() -const char* SCROLL_DIRECTION_NAME[] = {"Vertical", "Horizontal"}; -const char* INDICATOR_HEIGHT_POLICY_NAME[] = {"Variable", "Fixed"}; +const char* SCROLL_DIRECTION_NAME[] = {"VERTICAL", "HORIZONTAL"}; +const char* INDICATOR_HEIGHT_POLICY_NAME[] = {"VARIABLE", "FIXED"}; } @@ -178,16 +186,18 @@ ScrollBar::ScrollBar(Toolkit::ScrollBar::Direction direction) : Control( ControlBehaviour( CONTROL_BEHAVIOUR_DEFAULT ) ), mIndicatorShowAlpha(1.0f), mDirection(direction), - mScrollableObject(WeakHandleBase()), + mScrollableObject(WeakHandle()), mPropertyScrollPosition(Property::INVALID_INDEX), mPropertyMinScrollPosition(Property::INVALID_INDEX), mPropertyMaxScrollPosition(Property::INVALID_INDEX), mPropertyScrollContentSize(Property::INVALID_INDEX), mIndicatorShowDuration(DEFAULT_INDICATOR_SHOW_DURATION), mIndicatorHideDuration(DEFAULT_INDICATOR_HIDE_DURATION), + mTransientIndicatorDuration(DEFAULT_INDICATOR_TRANSIENT_DURATION), mScrollStart(0.0f), + mGestureDisplacement( Vector2::ZERO ), mCurrentScrollPosition(0.0f), - mIndicatorHeightPolicy(Toolkit::ScrollBar::Variable), + mIndicatorHeightPolicy(Toolkit::ScrollBar::VARIABLE), mIndicatorFixedHeight(DEFAULT_INDICATOR_FIXED_HEIGHT), mIndicatorMinimumHeight(DEFAULT_INDICATOR_MINIMUM_HEIGHT), mIndicatorStartPadding(DEFAULT_INDICATOR_START_PADDING), @@ -204,7 +214,12 @@ ScrollBar::~ScrollBar() void ScrollBar::OnInitialize() { CreateDefaultIndicatorActor(); - Self().SetDrawMode(DrawMode::OVERLAY_2D); + Self().SetProperty( Actor::Property::DRAW_MODE,DrawMode::OVERLAY_2D); + + DevelControl::SetAccessibilityConstructor( Self(), []( Dali::Actor actor ) { + return std::unique_ptr< Dali::Accessibility::Accessible >( + new AccessibleImpl( actor, Dali::Accessibility::Role::SCROLL_BAR ) ); + } ); } void ScrollBar::SetScrollPropertySource( Handle handle, Property::Index propertyScrollPosition, Property::Index propertyMinScrollPosition, Property::Index propertyMaxScrollPosition, Property::Index propertyScrollContentSize ) @@ -215,7 +230,7 @@ void ScrollBar::SetScrollPropertySource( Handle handle, Property::Index property && propertyMaxScrollPosition != Property::INVALID_INDEX && propertyScrollContentSize != Property::INVALID_INDEX ) { - mScrollableObject = WeakHandleBase(handle); + mScrollableObject = WeakHandle(handle); mPropertyScrollPosition = propertyScrollPosition; mPropertyMinScrollPosition = propertyMinScrollPosition; mPropertyMaxScrollPosition = propertyMaxScrollPosition; @@ -231,10 +246,12 @@ void ScrollBar::SetScrollPropertySource( Handle handle, Property::Index property void ScrollBar::CreateDefaultIndicatorActor() { - Toolkit::ImageView indicator = Toolkit::ImageView::New( DEFAULT_INDICATOR_IMAGE_PATH ); - indicator.SetParentOrigin( ParentOrigin::TOP_LEFT ); - indicator.SetAnchorPoint( AnchorPoint::TOP_LEFT ); + const std::string imageDirPath = AssetManager::GetDaliImagePath(); + Toolkit::ImageView indicator = Toolkit::ImageView::New( imageDirPath + DEFAULT_INDICATOR_IMAGE_FILE_NAME ); + indicator.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_LEFT ); + indicator.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT ); indicator.SetStyleName( "ScrollBarIndicator" ); + indicator.SetProperty( Actor::Property::COLOR_MODE, USE_OWN_MULTIPLY_PARENT_COLOR ); SetScrollIndicator(indicator); } @@ -250,16 +267,10 @@ void ScrollBar::SetScrollIndicator( Actor indicator ) } mIndicator = indicator; - Toolkit::Control control = Toolkit::Control::DownCast( mIndicator ); - if( control ) - { - control.SetStyleName( "ScrollBarIndicator" ); - } - mIndicatorFirstShow = true; Self().Add( mIndicator ); - EnableGestureDetection( Gesture::Type( Gesture::Pan ) ); + EnableGestureDetection( GestureType::Value( GestureType::PAN ) ); PanGestureDetector detector( GetPanGestureDetector() ); detector.DetachAll(); @@ -288,7 +299,7 @@ Actor ScrollBar::GetScrollIndicator() void ScrollBar::ApplyConstraints() { - Handle scrollableHandle = mScrollableObject.GetBaseHandle(); + Handle scrollableHandle = mScrollableObject.GetHandle(); if( scrollableHandle ) { @@ -298,9 +309,9 @@ void ScrollBar::ApplyConstraints() } // Set indicator height according to the indicator's height policy - if(mIndicatorHeightPolicy == Toolkit::ScrollBar::Fixed) + if(mIndicatorHeightPolicy == Toolkit::ScrollBar::FIXED) { - mIndicator.SetSize(Self().GetCurrentSize().width, mIndicatorFixedHeight); + mIndicator.SetProperty( Actor::Property::SIZE, Vector2( Self().GetCurrentProperty< Vector3 >( Actor::Property::SIZE ).width, mIndicatorFixedHeight) ); } else { @@ -331,7 +342,7 @@ void ScrollBar::SetScrollPositionIntervals( const Dali::Vector& positions { mScrollPositionIntervals = positions; - Handle scrollableHandle = mScrollableObject.GetBaseHandle(); + Handle scrollableHandle = mScrollableObject.GetHandle(); if( scrollableHandle ) { @@ -353,10 +364,10 @@ Dali::Vector ScrollBar::GetScrollPositionIntervals() const void ScrollBar::OnScrollPositionIntervalReached(PropertyNotification& source) { // Emit the signal to notify the scroll position crossing - Handle scrollableHandle = mScrollableObject.GetBaseHandle(); + Handle scrollableHandle = mScrollableObject.GetHandle(); if(scrollableHandle) { - mScrollPositionIntervalReachedSignal.Emit(scrollableHandle.GetProperty(mPropertyScrollPosition)); + mScrollPositionIntervalReachedSignal.Emit( scrollableHandle.GetCurrentProperty< float >( mPropertyScrollPosition ) ); } } @@ -372,7 +383,7 @@ void ScrollBar::ShowIndicator() if( mIndicatorFirstShow ) { // Preserve the alpha value from the stylesheet - mIndicatorShowAlpha = Self().GetCurrentColor().a; + mIndicatorShowAlpha = Self().GetCurrentProperty< Vector4 >( Actor::Property::COLOR ).a; mIndicatorFirstShow = false; } @@ -384,7 +395,7 @@ void ScrollBar::ShowIndicator() } else { - mIndicator.SetOpacity(mIndicatorShowAlpha); + mIndicator.SetProperty( Actor::Property::OPACITY,mIndicatorShowAlpha); } } @@ -405,14 +416,38 @@ void ScrollBar::HideIndicator() } else { - mIndicator.SetOpacity(0.0f); + mIndicator.SetProperty( Actor::Property::OPACITY,0.0f); + } +} + +void ScrollBar::ShowTransientIndicator() +{ + // Cancel any animation + if(mAnimation) + { + mAnimation.Clear(); + mAnimation.Reset(); + } + + mAnimation = Animation::New( mIndicatorShowDuration + mTransientIndicatorDuration + mIndicatorHideDuration ); + if(mIndicatorShowDuration > 0.0f) + { + mAnimation.AnimateTo( Property( mIndicator, Actor::Property::COLOR_ALPHA ), + mIndicatorShowAlpha, AlphaFunction::EASE_IN, TimePeriod(0, mIndicatorShowDuration) ); + } + else + { + mIndicator.SetProperty( Actor::Property::OPACITY,mIndicatorShowAlpha); } + mAnimation.AnimateTo( Property( mIndicator, Actor::Property::COLOR_ALPHA ), + 0.0f, AlphaFunction::EASE_IN, TimePeriod((mIndicatorShowDuration + mTransientIndicatorDuration), mIndicatorHideDuration) ); + mAnimation.Play(); } bool ScrollBar::OnPanGestureProcessTick() { // Update the scroll position property. - Handle scrollableHandle = mScrollableObject.GetBaseHandle(); + Handle scrollableHandle = mScrollableObject.GetHandle(); if( scrollableHandle ) { scrollableHandle.SetProperty(mPropertyScrollPosition, mCurrentScrollPosition); @@ -423,15 +458,15 @@ bool ScrollBar::OnPanGestureProcessTick() void ScrollBar::OnPan( const PanGesture& gesture ) { - Handle scrollableHandle = mScrollableObject.GetBaseHandle(); + Handle scrollableHandle = mScrollableObject.GetHandle(); if(scrollableHandle) { Dali::Toolkit::ItemView itemView = Dali::Toolkit::ItemView::DownCast(scrollableHandle); - switch(gesture.state) + switch(gesture.GetState()) { - case Gesture::Started: + case Dali::GestureState::STARTED: { if( !mPanProcessTimer ) { @@ -442,23 +477,22 @@ void ScrollBar::OnPan( const PanGesture& gesture ) } ShowIndicator(); - mScrollStart = scrollableHandle.GetProperty(mPropertyScrollPosition); - mGestureDisplacement = Vector3::ZERO; + mScrollStart = scrollableHandle.GetCurrentProperty< float >( mPropertyScrollPosition ); + mGestureDisplacement = Vector2::ZERO; mIsPanning = true; break; } - case Gesture::Continuing: + case Dali::GestureState::CONTINUING: { - mGestureDisplacement.x += gesture.displacement.x; - mGestureDisplacement.y += gesture.displacement.y; + mGestureDisplacement += gesture.GetDisplacement(); - float minScrollPosition = scrollableHandle.GetProperty( mPropertyMinScrollPosition ); - float maxScrollPosition = scrollableHandle.GetProperty( mPropertyMaxScrollPosition ); + float minScrollPosition = scrollableHandle.GetCurrentProperty( mPropertyMinScrollPosition ); + float maxScrollPosition = scrollableHandle.GetCurrentProperty( mPropertyMaxScrollPosition ); // The domain size is the internal range float domainSize = maxScrollPosition - minScrollPosition; - float logicalSize = Self().GetCurrentSize().y - ( mIndicator.GetCurrentSize().y + mIndicatorStartPadding + mIndicatorEndPadding ); + float logicalSize = Self().GetCurrentProperty< Vector3 >( Actor::Property::SIZE ).y - ( mIndicator.GetCurrentProperty< Vector3 >( Actor::Property::SIZE ).y + mIndicatorStartPadding + mIndicatorEndPadding ); mCurrentScrollPosition = mScrollStart - ( ( mGestureDisplacement.y * domainSize ) / logicalSize ); mCurrentScrollPosition = -std::min( maxScrollPosition, std::max( -mCurrentScrollPosition, minScrollPosition ) ); @@ -499,9 +533,9 @@ void ScrollBar::OnPan( const PanGesture& gesture ) void ScrollBar::OnSizeSet( const Vector3& size ) { - if(mIndicatorHeightPolicy == Toolkit::ScrollBar::Fixed) + if(mIndicatorHeightPolicy == Toolkit::ScrollBar::FIXED) { - mIndicator.SetSize(size.width, mIndicatorFixedHeight); + mIndicator.SetProperty( Actor::Property::SIZE, Vector2( size.width, mIndicatorFixedHeight ) ); } Control::OnSizeSet( size ); @@ -535,9 +569,9 @@ void ScrollBar::SetIndicatorFixedHeight( float height ) { mIndicatorFixedHeight = height; - if(mIndicatorHeightPolicy == Toolkit::ScrollBar::Fixed) + if(mIndicatorHeightPolicy == Toolkit::ScrollBar::FIXED) { - mIndicator.SetSize(Self().GetCurrentSize().width, mIndicatorFixedHeight); + mIndicator.SetProperty( Actor::Property::SIZE, Vector2( Self().GetCurrentProperty< Vector3 >( Actor::Property::SIZE ).width, mIndicatorFixedHeight) ); } } @@ -569,13 +603,13 @@ float ScrollBar::GetIndicatorHideDuration() const void ScrollBar::OnScrollDirectionPropertySet( Property::Value propertyValue ) { std::string directionName( propertyValue.Get() ); - if(directionName == "Vertical") + if(directionName == "VERTICAL") { - SetScrollDirection(Toolkit::ScrollBar::Vertical); + SetScrollDirection(Toolkit::ScrollBar::VERTICAL); } - else if(directionName == "Horizontal") + else if(directionName == "HORIZONTAL") { - SetScrollDirection(Toolkit::ScrollBar::Horizontal); + SetScrollDirection(Toolkit::ScrollBar::HORIZONTAL); } else { @@ -586,13 +620,13 @@ void ScrollBar::OnScrollDirectionPropertySet( Property::Value propertyValue ) void ScrollBar::OnIndicatorHeightPolicyPropertySet( Property::Value propertyValue ) { std::string policyName( propertyValue.Get() ); - if(policyName == "Variable") + if(policyName == "VARIABLE") { - SetIndicatorHeightPolicy(Toolkit::ScrollBar::Variable); + SetIndicatorHeightPolicy(Toolkit::ScrollBar::VARIABLE); } - else if(policyName == "Fixed") + else if(policyName == "FIXED") { - SetIndicatorHeightPolicy(Toolkit::ScrollBar::Fixed); + SetIndicatorHeightPolicy(Toolkit::ScrollBar::FIXED); } else { @@ -660,7 +694,7 @@ void ScrollBar::SetProperty( BaseObject* object, Property::Index index, const Pr } case Toolkit::ScrollBar::Property::SCROLL_POSITION_INTERVALS: { - Property::Array* array = value.GetArray(); + const Property::Array* array = value.GetArray(); if( array ) { Dali::Vector positions; @@ -693,6 +727,11 @@ void ScrollBar::SetProperty( BaseObject* object, Property::Index index, const Pr scrollBarImpl.ApplyConstraints(); break; } + case Toolkit::ScrollBar::Property::INDICATOR_TRANSIENT_DURATION: + { + scrollBarImpl.mTransientIndicatorDuration = value.Get(); + break; + } } } } @@ -735,17 +774,20 @@ Property::Value ScrollBar::GetProperty( BaseObject* object, Property::Index inde } case Toolkit::ScrollBar::Property::SCROLL_POSITION_INTERVALS: { - Property::Value value( Property::ARRAY ); - Property::Array* array = value.GetArray(); + Property::Value tempValue( Property::ARRAY ); + Property::Array* array = tempValue.GetArray(); if( array ) { Dali::Vector positions = scrollBarImpl.GetScrollPositionIntervals(); - size_t positionCount( array->Count() ); + size_t positionCount( positions.Count() ); + for( size_t i( 0 ); i != positionCount; ++i ) { array->PushBack( positions[i] ); } + + value = tempValue; } break; } @@ -764,11 +806,48 @@ Property::Value ScrollBar::GetProperty( BaseObject* object, Property::Index inde value = scrollBarImpl.mIndicatorEndPadding; break; } + case Toolkit::ScrollBar::Property::INDICATOR_TRANSIENT_DURATION: + { + value = scrollBarImpl.mTransientIndicatorDuration; + break; + } } } return value; } +bool ScrollBar::DoAction( BaseObject* object, const std::string& actionName, const Property::Map& attributes ) +{ + bool ret = false; + + Dali::BaseHandle handle( object ); + + Toolkit::ScrollBar scrollBar = Toolkit::ScrollBar::DownCast( handle ); + + DALI_ASSERT_DEBUG( scrollBar ); + + if( scrollBar ) + { + if( 0 == strcmp( actionName.c_str(), ACTION_SHOW_INDICATOR ) ) + { + GetImpl( scrollBar ).ShowIndicator(); + ret = true; + } + else if( 0 == strcmp( actionName.c_str(), ACTION_HIDE_INDICATOR ) ) + { + GetImpl( scrollBar ).HideIndicator(); + ret = true; + } + else if( 0 == strcmp( actionName.c_str(), ACTION_SHOW_TRANSIENT_INDICATOR ) ) + { + GetImpl( scrollBar ).ShowTransientIndicator(); + ret = true; + } + } + + return ret; +} + Toolkit::ScrollBar ScrollBar::New(Toolkit::ScrollBar::Direction direction) { // Create the implementation, temporarily owned by this handle on stack @@ -784,6 +863,50 @@ Toolkit::ScrollBar ScrollBar::New(Toolkit::ScrollBar::Direction direction) return handle; } +double ScrollBar::AccessibleImpl::GetMinimum() +{ + auto p = Toolkit::ScrollBar::DownCast( self ); + Handle scrollableHandle = GetImpl( p ).mScrollableObject.GetHandle(); + return scrollableHandle ? scrollableHandle.GetCurrentProperty< float >( GetImpl( p ).mPropertyMinScrollPosition ) : 0.0f; +} + +double ScrollBar::AccessibleImpl::GetCurrent() +{ + auto p = Toolkit::ScrollBar::DownCast( self ); + Handle scrollableHandle = GetImpl( p ).mScrollableObject.GetHandle(); + return scrollableHandle ? scrollableHandle.GetCurrentProperty< float >( GetImpl( p ).mPropertyScrollPosition ) : 0.0f; +} + +double ScrollBar::AccessibleImpl::GetMaximum() +{ + auto p = Toolkit::ScrollBar::DownCast( self ); + Handle scrollableHandle = GetImpl( p ).mScrollableObject.GetHandle(); + return scrollableHandle ? scrollableHandle.GetCurrentProperty< float >( GetImpl( p ).mPropertyMaxScrollPosition ) : 1.0f; +} + +bool ScrollBar::AccessibleImpl::SetCurrent( double current ) +{ + if( current < GetMinimum() || current > GetMaximum() ) + return false; + + auto value_before = GetCurrent(); + + auto p = Toolkit::ScrollBar::DownCast( self ); + Handle scrollableHandle = GetImpl( p ).mScrollableObject.GetHandle(); + if( !scrollableHandle ) + return false; + scrollableHandle.SetProperty( GetImpl( p ).mPropertyScrollPosition, static_cast< float >( current ) ); + + auto value_after = GetCurrent(); + + if( ( current != value_before ) && ( value_before == value_after ) ) + return false; + + return true; +} + +double ScrollBar::AccessibleImpl::GetMinimumIncrement() { return 1.0; } + } // namespace Internal } // namespace Toolkit