MarqueeRect.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Layout/SlateRect.h"
 
struct FMarqueeRect
{
    FDeprecateSlateVector2D StartPoint;
    FDeprecateSlateVector2D EndPoint;
 
    FMarqueeRect( UE::Slate::FDeprecateVector2DParameter InStartPoint = FVector2f::ZeroVector )
        : StartPoint( InStartPoint )
        , EndPoint( InStartPoint )
    {
    }
 
    void UpdateEndPoint( const UE::Slate::FDeprecateVector2DParameter& NewEndPoint )
    {
        EndPoint = NewEndPoint;
    }
 
    bool IsValid() const
    {
        return ! (EndPoint - StartPoint).IsNearlyZero();
    }
 
    UE::Slate::FDeprecateVector2DResult GetUpperLeft() const
    {
        return FVector2f( FMath::Min(StartPoint.X, EndPoint.X), FMath::Min( StartPoint.Y, EndPoint.Y ) );
    }
 
    UE::Slate::FDeprecateVector2DResult GetLowerRight() const
    {
        return  FVector2f( FMath::Max(StartPoint.X, EndPoint.X), FMath::Max( StartPoint.Y, EndPoint.Y ) );
    }
 
    UE::Slate::FDeprecateVector2DResult GetSize() const
    {
        FVector2f SignedSize = EndPoint - StartPoint;
        return FVector2f( FMath::Abs(SignedSize.X), FMath::Abs(SignedSize.Y) );
    }
 
    FSlateRect ToSlateRect() const
    {
        return FSlateRect( FVector2f(FMath::Min(StartPoint.X, EndPoint.X), FMath::Min(StartPoint.Y, EndPoint.Y)), FVector2f(FMath::Max(StartPoint.X, EndPoint.X), FMath::Max( StartPoint.Y, EndPoint.Y )) );
    }
};