SDockingTarget.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Input/Reply.h"
#include "Widgets/DeclarativeSyntaxSupport.h"
#include "Widgets/Layout/SBorder.h"
#include "Framework/Docking/SDockingNode.h"
 
class SDockingTarget : public SBorder
{
public:
    SLATE_BEGIN_ARGS(SDockingTarget)
        : _OwnerNode()
        , _DockDirection(SDockingNode::LeftOf)
        {}
        SLATE_ARGUMENT( TSharedPtr<class SDockingNode>, OwnerNode )
        SLATE_ARGUMENT( SDockingNode::RelativeDirection, DockDirection )
    SLATE_END_ARGS()
 
    SLATE_API void Construct( const FArguments& InArgs );
 
    // SWidget interface
    SLATE_API virtual void OnDragEnter( const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent ) override;
    SLATE_API virtual void OnDragLeave( const FDragDropEvent& DragDropEvent ) override;
    SLATE_API virtual FReply OnDrop( const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent ) override;
    // End of SWidget interface
 
    SLATE_API TSharedPtr<SDockingNode> GetOwner() const;
    
    SLATE_API SDockingNode::RelativeDirection GetDockDirection() const;
 
private:
    const FSlateBrush* GetTargetImage() const;
 
    const FSlateBrush* TargetImage;
    const FSlateBrush* TargetImage_Hovered;
 
    TWeakPtr<class SDockingNode> OwnerNode;
    SDockingNode::RelativeDirection DockDirection;
 
    bool bIsDragHovered;
};