145 lines
5.0 KiB
C++
145 lines
5.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/Array.h"
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#include "Containers/UnrealString.h"
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#include "CoreMinimal.h"
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#include "HAL/Platform.h"
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#include "Input/Reply.h"
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#include "Layout/SlateRect.h"
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#include "Math/Vector2D.h"
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#include "SGraphNodeResizable.h"
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#include "SNodePanel.h"
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#include "Styling/SlateColor.h"
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#include "Styling/SlateTypes.h"
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#include "Templates/SharedPointer.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#define UE_API GRAPHEDITOR_API
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class FDragDropEvent;
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class SBorder;
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class SCommentBubble;
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class SGraphNode;
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class UEdGraphNode_Comment;
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struct FGeometry;
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struct FPointerEvent;
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struct FSlateBrush;
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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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UE_API virtual FReply OnMouseButtonDoubleClick( const FGeometry& InMyGeometry, const FPointerEvent& InMouseEvent ) override;
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UE_API virtual FReply OnMouseButtonUp( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent ) override;
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UE_API virtual void Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime) override;
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UE_API virtual FReply OnDrop( const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent ) override;
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UE_API 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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UE_API virtual const FSlateBrush* GetShadowBrush(bool bSelected) const override;
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UE_API virtual void GetOverlayBrushes(bool bSelected, const FVector2f& WidgetSize, TArray<FOverlayBrushInfo>& Brushes) const override;
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virtual bool ShouldAllowCulling() const override { return true; }
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UE_API virtual int32 GetSortDepth() const override;
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UE_API virtual void EndUserInteraction() const override;
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UE_API virtual FString GetNodeComment() const override;
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//~ End SNodePanel::SNode Interface
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//~ Begin SPanel Interface
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UE_API virtual FVector2D ComputeDesiredSize(float) const override;
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//~ End SPanel Interface
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//~ Begin SGraphNode Interface
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UE_API virtual bool IsNameReadOnly() const override;
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virtual FSlateColor GetCommentColor() const override { return GetCommentBodyColor(); }
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/** Requests a rename when the node was initially spawned */
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virtual void RequestRenameOnSpawn()
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{
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RequestRename();
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ApplyRename();
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}
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//~ End SGraphNode Interface
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UE_API void Construct( const FArguments& InArgs, UEdGraphNode_Comment* InNode );
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/** return if the node can be selected, by pointing given location */
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UE_API virtual bool CanBeSelected( const FVector2f& MousePositionInNode ) const override;
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/** return size of the title bar */
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UE_API virtual FVector2f GetDesiredSizeForMarquee2f() const override;
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/** return rect of the title bar */
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UE_API virtual FSlateRect GetTitleRect() const override;
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protected:
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//~ Begin SGraphNode Interface
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UE_API virtual void UpdateGraphNode() override;
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UE_API 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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UE_API void HandleSelection(bool bIsSelected, bool bUpdateNodesUnderComment = false) const;
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/** Helper function to determine if a node is under this comment widget or not */
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UE_API virtual bool IsNodeUnderComment(UEdGraphNode_Comment* InCommentNode, const TSharedRef<SGraphNode> InNodeWidget) const;
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/** called when user is moving the comment node */
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UE_API virtual void MoveTo(const FVector2f& NewPosition, FNodeSet& NodeFilter, bool bMarkDirty = true) override;
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//~ Begin SGraphNodeResizable Interface
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UE_API virtual float GetTitleBarHeight() const override;
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UE_API virtual FSlateRect GetHitTestingBorder() const override;
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UE_API virtual FVector2f GetNodeMaximumSize2f() const override;
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//~ Begin SGraphNodeResizable Interface
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/** @return the color to tint the comment body */
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UE_API FSlateColor GetCommentBodyColor() const;
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/** @return the color to tint the title bar */
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UE_API FSlateColor GetCommentTitleBarColor() const;
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/** @return the color to tint the comment bubble */
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UE_API FSlateColor GetCommentBubbleColor() const;
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private:
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/** Returns the width to wrap the text of the comment at */
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UE_API float GetWrapAt() const;
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/** The comment bubble widget (used when zoomed out) */
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TSharedPtr<SCommentBubble> CommentBubble;
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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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protected:
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/** cached comment title */
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FString CachedCommentTitle;
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/** cached font size */
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int32 CachedFontSize;
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/** Was the bubble desired to be visible last frame? */
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mutable bool bCachedBubbleVisibility;
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private:
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/** cached comment title */
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int32 CachedWidth;
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/** Local copy of the comment style */
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FInlineEditableTextBlockStyle CommentStyle;
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};
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#undef UE_API
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