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This allows SGraphPanel widgets that live outside of an editor context (e.g. previews) to avoid node/pin references going stale if the underlying graph object is reconstructed. #jira UE-194980 #rb daren.cheng [CL 29963162 by phillip kavan in ue5-main branch]
51 lines
1.4 KiB
C++
51 lines
1.4 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 "HAL/Platform.h"
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#include "Misc/Attribute.h"
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#include "Templates/SharedPointer.h"
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#include "Types/SlateEnums.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/SCompoundWidget.h"
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class FText;
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class SGraphPanel;
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class SWidget;
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class UEdGraph;
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// This widget provides a fully-zoomed-out preview of a specified graph
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class GRAPHEDITOR_API SGraphPreviewer : public SCompoundWidget
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{
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public:
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SLATE_BEGIN_ARGS(SGraphPreviewer)
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: _ShowGraphStateOverlay(true)
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{}
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SLATE_ATTRIBUTE( FText, CornerOverlayText )
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/** Show overlay elements for the graph state such as the PIE and read-only borders and text */
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SLATE_ATTRIBUTE(bool, ShowGraphStateOverlay)
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SLATE_ARGUMENT( TSharedPtr<SWidget>, TitleBar )
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SLATE_END_ARGS()
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void Construct(const FArguments& InArgs, UEdGraph* InGraphObj);
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protected:
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/** Delegate handler for graph panel updates */
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void OnUpdateGraphPanel();
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private:
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/** Helper function used to refresh the graph */
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EActiveTimerReturnType RefreshGraphTimer(const double InCurrentTime, const float InDeltaTime);
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protected:
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/// The Graph we are currently viewing
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UEdGraph* EdGraphObj;
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// As node's bounds dont get updated immediately, to truly zoom out to fit we need to tick a few times
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int32 NeedsRefreshCounter;
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// The underlying graph panel
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TSharedPtr<SGraphPanel> GraphPanel;
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};
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