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c97e8231bb
Remove duplicated implementations of DrawConnection in subclasses that draw non-curved splines, overriding ComputeSplineTangent instead Upgrade note: Any editor plugins that contain a FConnectionDrawingPolicy subclass will need to update calls to DrawSplineWithArrow, DrawConnection, and DetermineWiringStyle [CL 2402661 by Michael Noland in Main branch]
48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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#include "GraphEditorCommon.h"
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#include "MaterialGraphConnectionDrawingPolicy.h"
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/////////////////////////////////////////////////////
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// FMaterialGraphConnectionDrawingPolicy
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FMaterialGraphConnectionDrawingPolicy::FMaterialGraphConnectionDrawingPolicy(int32 InBackLayerID, int32 InFrontLayerID, float ZoomFactor, const FSlateRect& InClippingRect, FSlateWindowElementList& InDrawElements, UEdGraph* InGraphObj)
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: FConnectionDrawingPolicy(InBackLayerID, InFrontLayerID, ZoomFactor, InClippingRect, InDrawElements)
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, MaterialGraph(CastChecked<UMaterialGraph>(InGraphObj))
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, MaterialGraphSchema(CastChecked<UMaterialGraphSchema>(InGraphObj->GetSchema()))
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{
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// Don't want to draw ending arrowheads
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ArrowImage = nullptr;
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ArrowRadius = FVector2D::ZeroVector;
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// Still need to be able to perceive the graph while dragging connectors, esp over comment boxes
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HoverDeemphasisDarkFraction = 0.4f;
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}
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void FMaterialGraphConnectionDrawingPolicy::DetermineWiringStyle(UEdGraphPin* OutputPin, UEdGraphPin* InputPin, /*inout*/ FConnectionParams& Params)
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{
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Params.WireColor = MaterialGraphSchema->ActivePinColor;
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// Have to consider both pins as the input will be an 'output' when previewing a connection
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if (OutputPin)
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{
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if (!MaterialGraph->IsInputActive(OutputPin))
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{
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Params.WireColor = MaterialGraphSchema->InactivePinColor;
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}
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}
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if (InputPin)
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{
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if (!MaterialGraph->IsInputActive(InputPin))
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{
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Params.WireColor = MaterialGraphSchema->InactivePinColor;
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}
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}
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const bool bDeemphasizeUnhoveredPins = HoveredPins.Num() > 0;
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if (bDeemphasizeUnhoveredPins)
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{
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ApplyHoverDeemphasis(OutputPin, InputPin, /*inout*/ Params.WireThickness, /*inout*/ Params.WireColor);
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}
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}
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