71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
// 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 "Delegates/Delegate.h"
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#include "Misc/Attribute.h"
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#include "Templates/SharedPointer.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/SCompoundWidget.h"
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#include "Widgets/SWidget.h"
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#define UE_API KISMETWIDGETS_API
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class SWidget;
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struct FGeometry;
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/////////////////////////////////////////////////////
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// SLevelOfDetailBranchNode
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DECLARE_DELEGATE_RetVal_OneParam(TSharedRef<SWidget>, FOnGetActiveDetailSlotContent, bool);
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class SLevelOfDetailBranchNode : public SCompoundWidget
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{
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SLATE_BEGIN_ARGS(SLevelOfDetailBranchNode)
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: _UseLowDetailSlot(false)
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{}
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// Should the low detail or high detail slot be shown?
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SLATE_ATTRIBUTE(bool, UseLowDetailSlot)
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// The low-detail slot
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SLATE_NAMED_SLOT(FArguments, LowDetail)
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// The high-detail slot
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SLATE_NAMED_SLOT(FArguments, HighDetail)
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SLATE_EVENT(FOnGetActiveDetailSlotContent, OnGetActiveDetailSlotContent)
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SLATE_END_ARGS()
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public:
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UE_API SLevelOfDetailBranchNode();
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UE_API void Construct(const FArguments& InArgs);
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// SWidget interface
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UE_API virtual void Tick( const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime ) override;
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// End of SWidget interface
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// Determine whether we need to show the low-detail slot or high-detail slot
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UE_API void RefreshLODSlotContent();
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protected:
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// What kind of slot was shown last frame
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int LastCachedValue;
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// The attribute indicating the kind of slot to show
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TAttribute<bool> ShowLowDetailAttr;
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// The low-detail child slot
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TSharedRef<SWidget> ChildSlotLowDetail;
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// The high-detail child slot
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TSharedRef<SWidget> ChildSlotHighDetail;
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FOnGetActiveDetailSlotContent OnGetActiveDetailSlotContent;
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};
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#undef UE_API
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