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#TTP 314475 - k2: comment boxes within other comment boxes do not move if the outer most box is moved. Also, if two nested comment boxes are moved, the nodes within move 2x as much as they should (video) #Branch UE4 #Proj GraphEditor, BehaviourTreeEditor #Add SNodePanel::SNode::FNodeSet typedef for conveniance and clarity #Change Changed SNodePanel::MoveTo to take an FNodeSet as an exclusion filter on the moved nodes, once moved nodes are appended into this set. CodeReview Chris.Wood, Nick.Whiting [CL 2064255 by Ben Cosh in Main branch]
106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
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#pragma once
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typedef TSharedPtr<class FPreviewElement, ESPMode::ThreadSafe> FThreadSafePreviewPtr;
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class FPreviewViewport : public ISlateViewport
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{
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public:
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FPreviewViewport(class UMaterialGraphNode* InNode);
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~FPreviewViewport();
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// ISlateViewport interface
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virtual void OnDrawViewport( const FGeometry& AllottedGeometry, const FSlateRect& MyClippingRect, class FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) OVERRIDE;
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virtual FIntPoint GetSize() const OVERRIDE;
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virtual class FSlateShaderResource* GetViewportRenderTargetTexture() const OVERRIDE {return NULL;}
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virtual bool RequiresVsync() const OVERRIDE {return false;}
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/** Material node to get expression preview from */
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UMaterialGraphNode* MaterialNode;
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/** Custom Slate Element to display the preview */
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FThreadSafePreviewPtr PreviewElement;
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};
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class FPreviewElement : public ICustomSlateElement
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{
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public:
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FPreviewElement();
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~FPreviewElement();
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/**
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* Sets up the canvas for rendering
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*
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* @param InCanvasRect Size of the canvas tile
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* @param InClippingRect How to clip the canvas tile
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* @param InExpressionPreview Render proxy for the Material preview
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* @param bInIsRealtime Whether preview is using realtime values
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*
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* @return Whether there is anything to render
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*/
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bool BeginRenderingCanvas( const FIntRect& InCanvasRect, const FIntRect& InClippingRect, FMaterialRenderProxy* InExpressionPreview, bool bInIsRealtime );
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private:
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/**
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* ICustomSlateElement interface
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*/
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virtual void DrawRenderThread( const void* InWindowBackBuffer ) OVERRIDE;
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private:
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/** Render target that the canvas renders to */
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class FSlateBackBufferTarget* RenderTarget;
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/** Render proxy for the expression preview */
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FMaterialRenderProxy* ExpressionPreview;
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/** Whether preview is using realtime values */
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bool bIsRealtime;
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};
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class SGraphNodeMaterialBase : public SGraphNode
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{
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public:
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SLATE_BEGIN_ARGS(SGraphNodeMaterialBase){}
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SLATE_END_ARGS()
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void Construct(const FArguments& InArgs, class UMaterialGraphNode* InNode);
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// SGraphNode interface
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virtual void CreatePinWidgets() OVERRIDE;
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// End of SGraphNode interface
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// SNodePanel::SNode interface
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virtual void MoveTo(const FVector2D& NewPosition, FNodeSet& NodeFilter) OVERRIDE;
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// End of SNodePanel::SNode interface
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UMaterialGraphNode* GetMaterialGraphNode() const {return MaterialNode;}
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protected:
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// SGraphNode interface
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virtual void AddPin( const TSharedRef<SGraphPin>& PinToAdd ) OVERRIDE;
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virtual void CreateBelowPinControls(TSharedPtr<SVerticalBox> MainBox) OVERRIDE;
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virtual void SetDefaultTitleAreaWidget(TSharedRef<SOverlay> DefaultTitleAreaWidget) OVERRIDE;
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virtual TSharedRef<SWidget> CreateNodeContentArea() OVERRIDE;
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// End of SGraphNode interface
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/** Creates a preview viewport if necessary */
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TSharedRef<SWidget> CreatePreviewWidget();
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/** Returns visibility of Expression Preview viewport */
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EVisibility ExpressionPreviewVisibility() const;
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/** Show/hide Expression Preview */
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void OnExpressionPreviewChanged( const ESlateCheckBoxState::Type NewCheckedState );
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/** hidden == unchecked, shown == checked */
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ESlateCheckBoxState::Type IsExpressionPreviewChecked() const;
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/** Up when shown, down when hidden */
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const FSlateBrush* GetExpressionPreviewArrow() const;
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private:
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/** Slate viewport for rendering preview via custom slate element */
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TSharedPtr<FPreviewViewport> PreviewViewport;
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/** Cached material graph node pointer to avoid casting */
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UMaterialGraphNode* MaterialNode;
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};
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