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105 lines
3.7 KiB
C++
105 lines
3.7 KiB
C++
// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Styling/SlateColor.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Layout/SlateRect.h"
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#include "Input/Reply.h"
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#include "SNodePanel.h"
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#include "SGraphNodeResizable.h"
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class SGraphNodeComment : public SGraphNodeResizable
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{
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public:
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SLATE_BEGIN_ARGS(SGraphNodeComment){}
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SLATE_END_ARGS()
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//~ Begin SWidget Interface
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virtual FReply OnMouseButtonDoubleClick( const FGeometry& InMyGeometry, const FPointerEvent& InMouseEvent ) override;
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virtual FReply OnMouseButtonUp( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent ) override;
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virtual void Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime) override;
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virtual FReply OnDrop( const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent ) override;
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virtual void OnDragEnter( const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent ) override;
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//~ End SWidget Interface
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//~ Begin SNodePanel::SNode Interface
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virtual const FSlateBrush* GetShadowBrush(bool bSelected) const override;
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virtual void GetOverlayBrushes(bool bSelected, const FVector2D WidgetSize, TArray<FOverlayBrushInfo>& Brushes) const override;
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virtual bool ShouldAllowCulling() const override { return false; }
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virtual int32 GetSortDepth() const override;
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virtual void EndUserInteraction() const override;
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virtual FString GetNodeComment() const override;
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//~ End SNodePanel::SNode Interface
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//~ Begin SPanel Interface
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virtual FVector2D ComputeDesiredSize(float) const override;
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//~ End SPanel Interface
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//~ Begin SGraphNode Interface
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virtual bool IsNameReadOnly() const override;
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virtual FSlateColor GetCommentColor() const override { return GetCommentBodyColor(); }
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//~ End SGraphNode Interface
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void Construct( const FArguments& InArgs, UEdGraphNode* InNode );
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/** return if the node can be selected, by pointing given location */
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virtual bool CanBeSelected( const FVector2D& MousePositionInNode ) const override;
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/** return size of the title bar */
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virtual FVector2D GetDesiredSizeForMarquee() const override;
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/** return rect of the title bar */
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virtual FSlateRect GetTitleRect() const override;
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protected:
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//~ Begin SGraphNode Interface
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virtual void UpdateGraphNode() override;
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virtual void PopulateMetaTag(class FGraphNodeMetaData* TagMeta) const override;
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/**
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* Helper method to update selection state of comment and any nodes 'contained' within it
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* @param bSelected If true comment is being selected, false otherwise
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* @param bUpdateNodesUnderComment If true then force the rebuild of the list of nodes under the comment
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*/
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void HandleSelection(bool bIsSelected, bool bUpdateNodesUnderComment = false) const;
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/** called when user is moving the comment node */
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virtual void MoveTo(const FVector2D& NewPosition, FNodeSet& NodeFilter ) override;
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//~ Begin SGraphNodeResizable Interface
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virtual float GetTitleBarHeight() const override;
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virtual FSlateRect GetHitTestingBorder() const override;
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virtual FVector2D GetNodeMaximumSize() const override;
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//~ Begin SGraphNodeResizable Interface
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private:
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/** @return the color to tint the comment body */
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FSlateColor GetCommentBodyColor() const;
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/** @return the color to tint the title bar */
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FSlateColor GetCommentTitleBarColor() const;
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/** @return the color to tint the comment bubble */
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FSlateColor GetCommentBubbleColor() const;
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/** Returns the width to wrap the text of the comment at */
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float GetWrapAt() const;
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private:
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/** The current selection state of the comment */
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mutable bool bIsSelected;
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/** the title bar, needed to obtain it's height */
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TSharedPtr<SBorder> TitleBar;
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/** cached comment title */
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FString CachedCommentTitle;
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/** cached comment title */
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int32 CachedWidth;
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};
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