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  3. FConnectionDrawingPolicy

FConnectionDrawingPolicy

This class draws the connections for an UEdGraph composed of pins and nodes.

API > API/Editor > API/Editor/GraphEditor

This class draws the connections for an UEdGraph composed of pins and nodes.

   
Name FConnectionDrawingPolicy
Type class
Header File /Engine/Source/Editor/GraphEditor/Public/ConnectionDrawingPolicy.h
Include Path #include "ConnectionDrawingPolicy.h"

Syntax

class FConnectionDrawingPolicy

Derived Classes

FConnectionDrawingPolicy derived class hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers

FConnectionDrawingPolicy ( int32 InBackLayerID,
int32 InFrontLayerID,
float InZoomFactor,
const FSlateRect& InClippingRect,
FSlateWindowElementList& InDrawElements
)

   ConnectionDrawingPolicy.h  

Destructors

Name Remarks Include Path Unreal Specifiers

virtual ~FConnectionDrawingPolicy()

   ConnectionDrawingPolicy.h  

Structs

Name Remarks
FRelinkConnection Handle for a currently relinked connection.

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
ArrowRadius FDeprecateSlateVector2D   ConnectionDrawingPolicy.h  
ConnectionsIntersectingSliceLine TArray< TPair< FEdGraphPinReference, FEdGraphPinReference > >   ConnectionDrawingPolicy.h  
MidpointRadius FDeprecateSlateVector2D   ConnectionDrawingPolicy.h  
SplineOverlapResult FGraphSplineOverlapResult   ConnectionDrawingPolicy.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

virtual void ApplyHoverDeemphasis ( UEdGraphPin* OutputPin,
UEdGraphPin* InputPin,
float& Thickness,
FLinearColor& WireColor
)

   ConnectionDrawingPolicy.h  

virtual FVector2f ComputeSplineTangent ( const FVector2f& Start,
const FVector2f& End
) const

   ConnectionDrawingPolicy.h  

virtual FVector2D ComputeSplineTangent ( const FVector2D& Start,
const FVector2D& End
) const

   ConnectionDrawingPolicy.h  

virtual void DetermineLinkGeometry ( FArrangedChildren& ArrangedNodes,
TSharedRef< SWidget >& OutputPinWidget,
UEdGraphPin* OutputPin,
UEdGraphPin* InputPin,
FArrangedWidget*& StartWidgetGeometry,
FArrangedWidget*& EndWidgetGeometry
)

   ConnectionDrawingPolicy.h  

virtual void DetermineWiringStyle ( UEdGraphPin* OutputPin,
UEdGraphPin* InputPin,
FConnectionParams& Params
)

 Give specific editor modes a chance to highlight this connection or darken non-interesting connections. ConnectionDrawingPolicy.h  

virtual void Draw ( TMap< TSharedRef< SWidget >, FArrangedWidget >& InPinGeometries,
FArrangedChildren& ArrangedNodes
)

   ConnectionDrawingPolicy.h  

virtual void DrawConnection ( int32 LayerId,
const FVector2f& Start,
const FVector2f& End,
const FConnectionParams& Params
)

   ConnectionDrawingPolicy.h  

virtual void DrawConnection ( int32 LayerId,
const FVector2D& Start,
const FVector2D& End,
const FConnectionParams& Params
)

   ConnectionDrawingPolicy.h  

virtual void DrawPreviewConnector ( const FGeometry& PinGeometry,
const FVector2f& StartPoint,
const FVector2f& EndPoint,
UEdGraphPin* Pin
)

   ConnectionDrawingPolicy.h  

virtual void DrawPreviewConnector ( const FGeometry& PinGeometry,
const FVector2D& StartPoint,
const FVector2D& EndPoint,
UEdGraphPin* Pin
)

   ConnectionDrawingPolicy.h  

virtual bool DrawSliceLine ()

 If a SliceLine has already been set, draw it. ConnectionDrawingPolicy.h  

virtual void DrawSplineWithArrow ( const FVector2D& StartPoint,
const FVector2D& EndPoint,
const FConnectionParams& Params
)

   ConnectionDrawingPolicy.h  

virtual void DrawSplineWithArrow ( const FGeometry& StartGeom,
const FGeometry& EndGeom,
const FConnectionParams& Params
)

   ConnectionDrawingPolicy.h  

virtual void DrawSplineWithArrow ( const FVector2f& StartPoint,
const FVector2f& EndPoint,
const FConnectionParams& Params
)

   ConnectionDrawingPolicy.h  

virtual TSharedPtr< IToolTip > GetConnectionToolTip ( const SGraphPanel& GraphPanel,
const FGraphSplineOverlapResult& OverlapData
) const

   ConnectionDrawingPolicy.h  

virtual bool IsConnectionCulled ( const FArrangedWidget& StartLink,
const FArrangedWidget& EndLink
) const

   ConnectionDrawingPolicy.h  

virtual void ResetIncompatiblePinDrawState ( const TSet< TSharedRef< SWidget > >& VisiblePins
)

   ConnectionDrawingPolicy.h  

void SetHoveredPins ( const TSet< FEdGraphPinReference >& InHoveredPins,
const TArray< TSharedPtr< SGraphPin > >& OverridePins,
double HoverTime
)

 Update the drawing policy with the set of hovered pins (which can be empty) ConnectionDrawingPolicy.h  

virtual void SetIncompatiblePinDrawState ( const TSharedPtr< SGraphPin >& StartPin,
const TSet< TSharedRef< SWidget > >& VisiblePins
)

   ConnectionDrawingPolicy.h  

void SetMarkedPin ( TWeakPtr< SGraphPin > InMarkedPin
)

 Update the drawing policy with the marked pin (which may not be valid) ConnectionDrawingPolicy.h  

void SetMousePosition ( const UE::Slate::FDeprecateVector2DParameter& InMousePos
)

   ConnectionDrawingPolicy.h  

void SetRelinkConnections ( const TArray< FRelinkConnection >& Connections
)

 Set the list of currently relinked connections. ConnectionDrawingPolicy.h  

void SetSelectedNodes ( const TArray< UEdGraphNode* >& InSelectedNodes
)

 Set the selected nodes from the graph panel. ConnectionDrawingPolicy.h  

void SetSliceLine ( const FMarqueeRect& InLine
)

 If a (valid) slice line has been set, we'll intersect any drawn splines via DrawConnection() with that line, and add any intersecting pin pairs to the public ConnectionsIntersectingSliceLine array. ConnectionDrawingPolicy.h  

virtual bool UseDrawStateCaching()

 Choose whether we want to cache the pins draw state to avoid resetting it for every tick. ConnectionDrawingPolicy.h  

Protected

Name Remarks Include Path Unreal Specifiers

virtual void BuildPinToPinWidgetMap ( TMap< TSharedRef< SWidget >, FArrangedWidget >& InPinGeometries
)

 Helper function used by Draw(). Called before DrawPinGeometries to populate PinToPinWidgetMap. ConnectionDrawingPolicy.h  

virtual void DrawPinGeometries ( TMap< TSharedRef< SWidget >, FArrangedWidget >& InPinGeometries,
FArrangedChildren& ArrangedNodes
)

 Helper function used by Draw(). Iterates over the pin geometries, drawing connections between them. ConnectionDrawingPolicy.h  

Static

Name Remarks Include Path Unreal Specifiers

static float MakeSplineReparamTable ( const UE::Slate::FDeprecateVector2DParameter& P0,
const UE::Slate::FDeprecateVector2DParameter& P0Tangent,
const UE::Slate::FDeprecateVector2DParameter& P1,
const UE::Slate::FDeprecateVector2DParameter& P1Tangent,
FInterpCurve< float >& OutReparamTable
)

 Util to make a 'distance->alpha' table and also return spline length ConnectionDrawingPolicy.h  

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