SDesignHelper.h

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// Copyright Lost in Game Studio. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "TouchInterface/VirtualControlSetup.h"
#include "Widgets/SLeafWidget.h"
 
class UVirtualControlSetup;

class TOUCHINTERFACE_API SDesignHelper : public SLeafWidget
{
public:
    SLATE_BEGIN_ARGS(SDesignHelper) :
    _StartOpacity(1.0f),
    _DrawInteractionZone(false)
    {}
 
    SLATE_ARGUMENT(UVirtualControlSetup*, Setup)
    SLATE_ARGUMENT(float, StartOpacity)
    SLATE_ARGUMENT(bool, DrawInteractionZone)
    SLATE_ARGUMENT(FIntPoint, ScreenSize)
    SLATE_ARGUMENT(float, DPIScale)
 
    SLATE_END_ARGS()
 
    
    void Construct(const FArguments& InArgs);
 
    //Begin SWidget
    virtual FVector2D ComputeDesiredSize(float LayoutScaleMultiplier) const override;
    virtual int32 OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const override;
    //End SWidget
 
private:
    virtual void PaintButton(const FVirtualControl& VirtualControl, const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle) const;
    virtual void PaintJoystick(const FVirtualControl& VirtualControl, const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle) const;
    virtual void PaintTouchRegion(const FVirtualControl& VirtualControl, const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle) const;
    
    void DrawLayer(const FVisualLayer& InLayer, const FVector2D InSize, const FVector2D InBrushSize, const FVector2D InOffset, const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle) const;
 
public:
    void SetSetupAsset(const UVirtualControlSetup* NewSetup);
    void SetScreenSize(const FIntPoint InScreenSize);
    void SetOpacity(const float InOpacity);
    void SetDpiScale(const float InDPIScale) { DPIScale = InDPIScale; }
    void SetDrawInteractionZone(const bool bEnable) { bDrawInteractionZone = bEnable; }
 
private:
    float GetScaleFactor(const FGeometry& AllottedGeometry) const;
    
    const UVirtualControlSetup* SetupPreviewed;
 
    FIntPoint ScreenSize;
 
    float DPIScale;
    
    float Opacity;
    
    uint8 bDrawInteractionZone:1;
};