Exemplo n.º 1
0
int32 SSplitter::OnPaint( const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyClippingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) const
{
	FArrangedChildren ArrangedChildren( EVisibility::Visible );
	ArrangeChildren( AllottedGeometry, ArrangedChildren );

	int32 MaxLayerId = PaintArrangedChildren( Args, ArrangedChildren, MyClippingRect, OutDrawElements, LayerId, InWidgetStyle, bParentEnabled );

	const FSlateBrush* NormalHandleBrush = &Style->HandleNormalBrush;

	// Draw the splitter above any children
	MaxLayerId += 1;

	for( int32 ChildIndex = 0; ChildIndex < ArrangedChildren.Num(); ++ChildIndex )
	{
		const FGeometry& GeometryAfterSplitter = ArrangedChildren[ FMath::Clamp(ChildIndex + 1, 0, ArrangedChildren.Num()-1) ].Geometry;

		const float HalfHitDetectionSplitterHandleSize = ( HitDetectionSplitterHandleSize / 2 );
		const float HalfPhysicalSplitterHandleSize = ( PhysicalSplitterHandleSize / 2 );

		FVector2D HandleSize;		
		FVector2D HandlePosition;
		if ( Orientation == Orient_Horizontal )
		{
			HandleSize.Set( PhysicalSplitterHandleSize, GeometryAfterSplitter.Size.Y );
			HandlePosition.Set( -(HalfHitDetectionSplitterHandleSize + HalfPhysicalSplitterHandleSize), 0 );
		}
		else
		{
			HandleSize.Set( GeometryAfterSplitter.Size.X, PhysicalSplitterHandleSize );
			HandlePosition.Set( 0, -(HalfHitDetectionSplitterHandleSize + HalfPhysicalSplitterHandleSize) );
		}

		if (HoveredHandleIndex != ChildIndex)
		{
			FSlateDrawElement::MakeBox(
				OutDrawElements,
				MaxLayerId,
				GeometryAfterSplitter.ToPaintGeometry( HandlePosition, HandleSize, 1.0f ),
				NormalHandleBrush,
				MyClippingRect,
				ShouldBeEnabled( bParentEnabled ),
				InWidgetStyle.GetColorAndOpacityTint() * NormalHandleBrush->TintColor.GetSpecifiedColor()
			);
		}
		else
		{
			FSlateDrawElement::MakeBox(
				OutDrawElements,
				MaxLayerId,
				GeometryAfterSplitter.ToPaintGeometry( HandlePosition, HandleSize, 1.0f ),
				&Style->HandleHighlightBrush,
				MyClippingRect,
				ShouldBeEnabled( bParentEnabled ),
				InWidgetStyle.GetColorAndOpacityTint() * Style->HandleHighlightBrush.TintColor.GetSpecifiedColor()
			);	
		}
	}

	return MaxLayerId;
}
Exemplo n.º 2
0
int32 SPanel::OnPaint( const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyClippingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) const
{
	// REMOVE THIS: Currently adding a debug quad so that BoxPanels are visible during development
	// OutDrawElements.AddItem( FSlateDrawElement::MakeQuad( AllottedGeometry.AbsolutePosition, AllottedGeometry.Size ) );	
	FArrangedChildren ArrangedChildren(EVisibility::Visible);
	{
		// The box panel has no visualization of its own; it just visualizes its children.
		
		this->ArrangeChildren(AllottedGeometry, ArrangedChildren);
	}

	return PaintArrangedChildren(Args, ArrangedChildren, MyClippingRect, OutDrawElements, LayerId, InWidgetStyle, bParentEnabled);
}