79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Styling/SlateBrush.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/SCompoundWidget.h"
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#include "Widgets/SLeafWidget.h"
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#include "Styling/CoreStyle.h"
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#include "SCircumferenceMarkerWidget.generated.h"
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USTRUCT(BlueprintType)
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struct FCircumferenceMarkerEntry
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{
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GENERATED_BODY()
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// The angle to place this marker around the circle (in degrees)
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UPROPERTY(EditAnywhere, BlueprintReadWrite, meta=(ForceUnits=deg))
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float PositionAngle = 0.0f;
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// The angle to rotate the marker image (in degrees)
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UPROPERTY(EditAnywhere, BlueprintReadWrite, meta=(ForceUnits=deg))
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float ImageRotationAngle = 0.0f;
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};
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class SCircumferenceMarkerWidget : public SLeafWidget
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{
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SLATE_BEGIN_ARGS(SCircumferenceMarkerWidget)
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: _MarkerBrush(FCoreStyle::Get().GetBrush("Throbber.CircleChunk"))
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, _Radius(48.0f)
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{
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}
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/** What each marker on the circumference looks like */
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SLATE_ARGUMENT(const FSlateBrush*, MarkerBrush)
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/** At which angles should a marker be drawn */
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SLATE_ARGUMENT(TArray<FCircumferenceMarkerEntry>, MarkerList)
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/** The radius of the circle */
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SLATE_ATTRIBUTE(float, Radius)
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/** The color and opacity of the marker */
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SLATE_ATTRIBUTE(FSlateColor, ColorAndOpacity)
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SLATE_END_ARGS()
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public:
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void Construct(const FArguments& InArgs);
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SCircumferenceMarkerWidget();
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//~SWidget interface
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virtual int32 OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const override;
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virtual FVector2D ComputeDesiredSize(float) const override;
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virtual bool ComputeVolatility() const override { return true; }
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//~End of SWidget interface
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void SetRadius(float NewRadius);
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void SetMarkerList(TArray<FCircumferenceMarkerEntry>& NewMarkerList);
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private:
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FSlateRenderTransform GetMarkerRenderTransform(const FCircumferenceMarkerEntry& Marker, const float BaseRadius, const float HUDScale) const;
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private:
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/** What each marker on the circumference looks like */
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const FSlateBrush* MarkerBrush;
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/** Angles around the reticle center to place ReticleCornerImage icons */
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TArray<FCircumferenceMarkerEntry> MarkerList;
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/** The radius of the circle */
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TAttribute<float> Radius;
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/** Color and opacity of the markers */
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TAttribute<FSlateColor> ColorAndOpacity;
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bool bColorAndOpacitySet;
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/** Whether reticle corner images are placed outside the spread radius */
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//@TODO: Make this a 0-1 float alignment instead (e.g., inside/on/outside the radius)?
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uint8 bReticleCornerOutsideSpreadRadius : 1;
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};
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