LinuxCursor.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Math/Vector2D.h"
#include "GenericPlatform/ICursor.h"
#include <SDL3/SDL.h>
 
typedef SDL_Cursor*     SDL_HCursor;
 
class FLinuxCursor : public ICursor
{
public:
    FLinuxCursor();
 
    virtual ~FLinuxCursor();
 
    virtual bool IsCreateCursorFromRGBABufferSupported() const override
    {
        return true;
    }
 
    virtual void* CreateCursorFromRGBABuffer(const FColor* Pixels, int32 Width, int32 Height, FVector2D InHotSpot) override;
 
    virtual FVector2D GetPosition() const override;
 
    virtual void SetPosition( const int32 X, const int32 Y ) override;
 
    virtual void SetType( const EMouseCursor::Type InNewCursor ) override;
 
    virtual EMouseCursor::Type GetType() const override
    {
        return CurrentType;
    }
 
    virtual void GetSize( int32& Width, int32& Height ) const override;
 
    virtual void Show( bool bShow ) override;
 
    virtual void Lock( const RECT* const Bounds ) override;
 
    virtual void SetTypeShape(EMouseCursor::Type InCursorType, void* CursorHandle) override;
 
public:
 
    virtual void SetCustomShape( SDL_HCursor CursorHandle );
 
    bool IsHidden();
 
    void InvalidateCaches();
 
    void SetCachedPosition( const float X, const float Y );
 
private:
 
    EMouseCursor::Type CurrentType;
    bool bHidden;
 
    SDL_HCursor CursorHandles[ EMouseCursor::TotalCursorCount ];
 
    SDL_HCursor CursorOverrideHandles[ EMouseCursor::TotalCursorCount ];
 
    SDL_Rect CursorClipRect;
 
    mutable float CachedGlobalXPosition;
 
    mutable float CachedGlobalYPosition;
 
    mutable bool bPositionCacheIsValid;
};