PaintArgs.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Layout/Visibility.h"
#include "Layout/Geometry.h"
#include "SlateGlobals.h"
 
class FHittestGrid;
class FSlateRect;
class ICustomHitTestPath;
class SWidget;
class SWindow;
 
 
class FPaintArgs
{
    friend class SInvalidationPanel;
    friend class SRetainerWidget;
public:
    SLATECORE_API FPaintArgs(const SWidget* PaintParent, FHittestGrid& InRootHittestGrid, FHittestGrid& InCurrentHitTestGrid, UE::Slate::FDeprecateVector2DParameter InWindowOffset, double InCurrentTime, float InDeltaTime);
    SLATECORE_API FPaintArgs(const SWidget* PaintParent, FHittestGrid& InRootHittestGrid, UE::Slate::FDeprecateVector2DParameter InWindowOffset, double InCurrentTime, float InDeltaTime);
 
    [[nodiscard]] inline FPaintArgs WithNewParent(const SWidget* PaintParent) const
    {
        FPaintArgs Args(*this);
        Args.PaintParentPtr = PaintParent;
 
        return Args;
    }
 
    [[nodiscard]] inline FPaintArgs WithNewHitTestGrid(FHittestGrid& NewHitTestGrid) const
    {
        FPaintArgs NewArgs(PaintParentPtr, RootGrid, NewHitTestGrid, WindowOffset, CurrentTime, DeltaTime);
        return NewArgs;
    }
 
    SLATECORE_API FPaintArgs InsertCustomHitTestPath(const SWidget* Widget, TSharedRef<ICustomHitTestPath> CustomHitTestPath) const;
 
    void SetInheritedHittestability(bool InInheritedHittestability)
    {
        bInheritedHittestability = InInheritedHittestability;
    }
 
    bool GetInheritedHittestability() const
    {
        return bInheritedHittestability;
    }
 
    FHittestGrid& GetHittestGrid() const
    {
        return CurrentGrid;
    }
 
    const SWidget* GetPaintParent() const
    {
        return PaintParentPtr; 
    }
 
    UE::Slate::FDeprecateVector2DResult GetWindowToDesktopTransform() const
    {
        return UE::Slate::FDeprecateVector2DResult(WindowOffset);
    }
 
    double GetCurrentTime() const
    {
        return CurrentTime;
    }
 
    float GetDeltaTime() const
    {
        return DeltaTime;
    }
 
    void SetDeferredPaint(bool InDeferredPaint)
    {
        bDeferredPainting = InDeferredPaint;
    }
 
    bool GetDeferredPaint() const
    {
        return bDeferredPainting;
    }
    
private:
 
    FHittestGrid& RootGrid;
 
    FHittestGrid& CurrentGrid;
 
    FVector2f WindowOffset;
    const SWidget* PaintParentPtr;
 
    double CurrentTime;
    float DeltaTime;
    uint8 bInheritedHittestability : 1;
    uint8 bDeferredPainting : 1;
 
};