// Copyright Epic Games, Inc. All Rights Reserved. #pragma once #include "CoreMinimal.h" #include "HAL/Platform.h" #include "Misc/Attribute.h" #include "Templates/SharedPointer.h" #include "Types/SlateEnums.h" #include "Widgets/DeclarativeSyntaxSupport.h" #include "Widgets/SCompoundWidget.h" class FText; class SGraphPanel; class SWidget; class UEdGraph; // This widget provides a fully-zoomed-out preview of a specified graph class GRAPHEDITOR_API SGraphPreviewer : public SCompoundWidget { public: SLATE_BEGIN_ARGS(SGraphPreviewer) : _ShowGraphStateOverlay(true) {} SLATE_ATTRIBUTE( FText, CornerOverlayText ) /** Show overlay elements for the graph state such as the PIE and read-only borders and text */ SLATE_ATTRIBUTE(bool, ShowGraphStateOverlay) SLATE_ARGUMENT( TSharedPtr, TitleBar ) SLATE_END_ARGS() void Construct(const FArguments& InArgs, UEdGraph* InGraphObj); protected: /** Delegate handler for graph panel updates */ void OnUpdateGraphPanel(); private: /** Helper function used to refresh the graph */ EActiveTimerReturnType RefreshGraphTimer(const double InCurrentTime, const float InDeltaTime); protected: /// The Graph we are currently viewing UEdGraph* EdGraphObj; // As node's bounds dont get updated immediately, to truly zoom out to fit we need to tick a few times int32 NeedsRefreshCounter; // The underlying graph panel TSharedPtr GraphPanel; };