97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
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// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "AssetData.h"
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#include "Input/DragAndDrop.h"
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#include "Layout/Visibility.h"
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#include "DragAndDrop/DecoratedDragDropOp.h"
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class FAssetThumbnail;
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class FAssetThumbnailPool;
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class UActorFactory;
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class UNREALED_API FAssetDragDropOp: public FDecoratedDragDropOp
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{
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public:
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DRAG_DROP_OPERATOR_TYPE(FAssetDragDropOp, FDecoratedDragDropOp)
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static TSharedRef<FAssetDragDropOp> New(const FAssetData& InAssetData, UActorFactory* ActorFactory = nullptr);
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static TSharedRef<FAssetDragDropOp> New(TArray<FAssetData> InAssetData, UActorFactory* ActorFactory = nullptr);
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static TSharedRef<FAssetDragDropOp> New(FString InAssetPath);
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static TSharedRef<FAssetDragDropOp> New(TArray<FString> InAssetPaths);
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static TSharedRef<FAssetDragDropOp> New(TArray<FAssetData> InAssetData, TArray<FString> InAssetPaths, UActorFactory* ActorFactory = nullptr);
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/** @return true if this drag operation contains assets */
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bool HasAssets() const
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{
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return AssetData.Num() > 0;
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}
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/** @return true if this drag operation contains asset paths */
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bool HasAssetPaths() const
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{
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return AssetPaths.Num() > 0;
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}
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/** @return The assets from this drag operation */
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const TArray<FAssetData>& GetAssets() const
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{
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return AssetData;
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}
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/** @return The asset paths from this drag operation */
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const TArray<FString>& GetAssetPaths() const
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{
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return AssetPaths;
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}
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/** @return The actor factory to use if converting this asset to an actor */
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UActorFactory* GetActorFactory() const
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{
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return ActorFactory.Get();
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}
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public:
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virtual ~FAssetDragDropOp();
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virtual TSharedPtr<SWidget> GetDefaultDecorator() const override;
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FText GetDecoratorText() const;
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protected:
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void Init(TArray<FAssetData> InAssetData, TArray<FString> InAssetPaths, UActorFactory* InActorFactory);
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virtual void InitThumbnail();
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virtual bool HasFiles() const;
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virtual bool HasFolders() const;
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virtual int32 GetTotalCount() const;
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virtual FText GetFirstItemText() const;
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private:
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/** Data for the assets this item represents */
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TArray<FAssetData> AssetData;
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/** Data for the asset paths this item represents */
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TArray<FString> AssetPaths;
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/** The actor factory to use if converting this asset to an actor */
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TWeakObjectPtr<UActorFactory> ActorFactory;
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protected:
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/** Pool for maintaining and rendering thumbnails */
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TSharedPtr<FAssetThumbnailPool> ThumbnailPool;
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/** Handle to the thumbnail resource */
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TSharedPtr<FAssetThumbnail> AssetThumbnail;
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/** The size of the thumbnail */
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int32 ThumbnailSize = 0;
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};
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