SPanel.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Misc/Attribute.h"
#include "Layout/Visibility.h"
#include "Widgets/SWidget.h"
 
class FArrangedChildren;
class FChildren;
class FPaintArgs;
class FSlateWindowElementList;
 
template <>
struct TWidgetTypeTraits<class SPanel>
{
    static constexpr bool SupportsInvalidation() { return true; }
};
 
class SPanel
    : public SWidget
{
public: 
 
    virtual void OnArrangeChildren( const FGeometry& AllottedGeometry, FArrangedChildren& ArrangedChildren ) const override = 0;
 
    virtual FVector2D ComputeDesiredSize(float) const override = 0;
 
    virtual FChildren* GetChildren() override = 0;
 
public:
 
    void Construct() { }
 
public:
 
    // SWidget overrides
 
    SLATECORE_API virtual int32 OnPaint( const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) const override;
 
protected:
 
    SLATECORE_API int32 PaintArrangedChildren( const FPaintArgs& Args, const FArrangedChildren& ArrangedChildren, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled  ) const;
    
protected:
 
    SLATECORE_API SPanel( );
    SLATECORE_API virtual ~SPanel( );
 
public:
    SLATECORE_API virtual void SetVisibility( TAttribute<EVisibility> InVisibility ) override final;
};