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127 lines
2.7 KiB
C++
127 lines
2.7 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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#pragma once
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/** A timeline widget.*/
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class TASKGRAPH_API STimeline : public SCompoundWidget
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{
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public:
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SLATE_BEGIN_ARGS( STimeline )
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: _MinValue( 0.0f )
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, _MaxValue( 1.0f )
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{}
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/** Minimum value on the timeline */
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SLATE_ARGUMENT( float, MinValue )
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/** Maximum value on the timeline */
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SLATE_ARGUMENT( float, MaxValue )
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/** fixed pixel spacing between centers of labels */
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SLATE_ARGUMENT( float, FixedLabelSpacing )
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SLATE_END_ARGS()
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/**
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* Construct the widget
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*
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* @param InArgs A declaration from which to construct the widget
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*/
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void Construct( const FArguments& InArgs );
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// SWidget interface
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virtual int32 OnPaint( const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyClippingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) const override;
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virtual void Tick( const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime ) override;
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virtual FReply OnMouseButtonDown( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent ) override;
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virtual FReply OnMouseMove( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent ) override;
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FVector2D ComputeDesiredSize(float) const override;
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// End of SWidget interface
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/**
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* Sets the graph's zoom level
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*
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* @param NewValue Zoom value, minimum is 1.0
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*/
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void SetZoom( float InZoom )
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{
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Zoom = FMath::Max(InZoom, 1.0f);
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}
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float GetZoom()
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{
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return Zoom;
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}
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/**
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* Sets the graph's offset by which all graph bars should be moved
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*
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* @param NewValue Offset value
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*/
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void SetOffset( float InOffset )
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{
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Offset = InOffset;
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}
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/**
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* Gets the graph's offset value
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*
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* @return Offset value
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*/
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float GetOffset() const
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{
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return Offset;
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}
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/**
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* Sets the graph's min and max values.
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*
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* @param InMin New min value.
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* @param InMin New max value.
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*/
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void SetMinMaxValues(float InMin, float InMax)
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{
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MinValue = InMin;
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MaxValue = InMax;
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}
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void GetMinMaxValues(float &InMin, float &InMax)
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{
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InMin = MinValue;
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InMax = MaxValue;
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}
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void SetDrawingGeometry(const FGeometry& Geometry)
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{
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DrawingGeometry = Geometry;
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}
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FGeometry GetDrawingGeometry() const
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{
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return DrawingGeometry;
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}
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private:
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/** Background image to use for the graph bar */
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const FSlateBrush* BackgroundImage;
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/** Minimum value on the timeline */
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float MinValue;
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/** Maximum value on the timeline */
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float MaxValue;
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/** fixed pixel spacing between centers of labels */
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float FixedLabelSpacing;
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/** Current zoom of the graph */
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float Zoom;
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/** Current offset of the graph */
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float Offset;
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float DrawingOffsetX;
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FGeometry DrawingGeometry;
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};
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