66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/UnrealString.h"
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#include "HAL/Platform.h"
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#include "HLODOutlinerDragDrop.h"
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#include "ITreeItem.h"
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#include "Templates/SharedPointer.h"
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#include "TreeItemID.h"
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class SWidget;
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class UToolMenu;
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namespace HLODOutliner
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{
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class SHLODOutliner;
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/** Helper class to manage moving abritrary data onto an actor */
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struct FLODLevelDropTarget : IDropTarget
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{
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/** The actor this tree item is associated with. */
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uint32 LODLevelIndex;
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/** Construct this object out of an Actor */
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FLODLevelDropTarget(uint32 InLODIndex) : LODLevelIndex(InLODIndex) {}
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public:
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/** Called to test whether the specified payload can be dropped onto this tree item */
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virtual FDragValidationInfo ValidateDrop(FDragDropPayload& DraggedObjects) const override;
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/** Called to drop the specified objects on this item. Only called if ValidateDrop() allows. */
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virtual void OnDrop(FDragDropPayload& DraggedObjects, const FDragValidationInfo& ValidationInfo, TSharedRef<SWidget> DroppedOnWidget) override;
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/** Creating a new cluster (LODActor) with given objects/actors */
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void CreateNewCluster(FDragDropPayload &DraggedObjects);
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};
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struct FLODLevelItem : ITreeItem
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{
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FLODLevelItem(const uint32 InLODIndex);
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//~ Begin ITreeItem Interface.
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virtual bool CanInteract() const override;
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virtual void GenerateContextMenu(UToolMenu* Menu, SHLODOutliner& Outliner) override;
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virtual FString GetDisplayString() const override;
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virtual FTreeItemID GetID() override;
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//~ Begin ITreeItem Interface.
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/** Populate the specified drag/drop payload with any relevant information for this type */
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virtual void PopulateDragDropPayload(FDragDropPayload& Payload) const override;
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/** Called to test whether the specified payload can be dropped onto this tree item */
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virtual FDragValidationInfo ValidateDrop(FDragDropPayload& DraggedObjects) const override;
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/** Called to drop the specified objects on this item. Only called if ValidateDrop() allows. */
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virtual void OnDrop(FDragDropPayload& DraggedObjects, const FDragValidationInfo& ValidationInfo, TSharedRef<SWidget> DroppedOnWidget) override;
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/** LOD index of this level */
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uint32 LODLevelIndex;
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/** TreeItem ID */
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FTreeItemID ID;
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};
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};
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