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> Unreal Engine API Reference > Editor > UnrealEd > MaterialGraph > UMaterialGraphSchema

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UMaterialGraphSchema

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Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UEdGraphSchema

UMaterialGraphSchema

References

Module	UnrealEd
Header	/Engine/Source/Editor/UnrealEd/Classes/MaterialGraph/MaterialGraphSchema.h
Include	#include "MaterialGraph/MaterialGraphSchema.h"

Syntax

class UMaterialGraphSchema : public UEdGraphSchema

Constructors

	Name	Description
	UMaterialGraphSchema ( const FObjectInitializer& ObjectIn... )

Functions

	Name	Description
bool	ArePinsCompatible_Internal ( const UEdGraphPin* InputPin, const UEdGraphPin* OutputPin, FText& ResponseMessage )	Check whether the types of pins are compatible
bool	ConnectionCausesLoop ( const UEdGraphPin* InputPin, const UEdGraphPin* OutputPin )	Check whether connecting these pins would cause a loop
uint32	GetMaterialValueType ( const UEdGraphPin* MaterialPin )	Gets the type of this pin (must be part of a UMaterialGraphNode_Base)
void	GetPaletteActions ( FGraphActionMenuBuilder& ActionMen..., const FString& CategoryName, bool bMaterialFunction )
void	OnConnectToFunctionOutput ( UEdGraphPin* InGraphPin, UEdGraphPin* InFuncPin )	Connect a pin to one of the Material Function's outputs
void	OnConnectToMaterial ( UEdGraphPin* InGraphPin, int32 ConnIndex )	Connect a pin to one of the Material's inputs

Overridden from UEdGraphSchema

	Name	Description
void	BreakNodeLinks ( UEdGraphNode& TargetNode )	Breaks all links from/to a single node
void	BreakPinLinks ( UEdGraphPin& TargetPin, bool bSendsNodeNotifcation )	Breaks all links from/to a single pin
void	BreakSinglePinLink ( UEdGraphPin* SourcePin, UEdGraphPin* TargetPin )	Breaks the link between two nodes.
const FPinCo...	CanCreateConnection ( const UEdGraphPin* A, const UEdGraphPin* B )	Determine if a connection can be created between two pins.
bool	CanEncapuslateNode ( UEdGraphNode const& TestNode )	Can TestNode be encapsulated into a child graph?
void	DroppedAssetsOnGraph ( const TArray< struct FAssetData >&..., const FVector2D& GraphPosition, UEdGraph* Graph )	Called when asset(s) are dropped onto a graph background.
void	ForceVisualizationCacheClear()	Forces cached visualization data to refresh
void	GetAssetsGraphHoverMessage ( const TArray< FAssetData >& Assets, const UEdGraph* HoverGraph, FString& OutTooltipText, bool& OutOkIcon )	Allows schema to generate a tooltip (icon & message) when the specified asset(s) are dragged over the specified graph
void	GetContextMenuActions ( UToolMenu* Menu, UGraphNodeContextMenuContext* ... )	Gets actions that should be added to the right-click context menu for a node or pin
TSharedPtr< ...	GetCreateCommentAction()	Returns schema action to create comment from implemention
int32	GetCurrentVisualizationCacheID()	Returns the current cache title refresh ID that is appropriate for the passed node
void	GetGraphContextActions ( FGraphContextMenuBuilder& ContextM... )	Get all actions that can be performed when right clicking on a graph or drag-releasing on a graph from a pin
int32	GetNodeSelectionCount ( const UEdGraph* Graph )	Returns the currently selected graph node count
FLinearColor	GetPinTypeColor ( const FEdGraphPinType& PinType )	Gets the draw color of a pin based on it's type.
bool	IsCacheVisualizationOutOfDate ( int32 InVisualizationCacheID )	Checks if a CacheRefreshID is out of date
void	OnPinConnectionDoubleCicked ( UEdGraphPin* PinA, UEdGraphPin* PinB, const FVector2D& GraphPosition )	Handles double-clicking on a pin<->pin connection
bool	SafeDeleteNodeFromGraph ( UEdGraph* Graph, UEdGraphNode* Node )	Perform any logic necessary to safely remove this node from the graph.
bool	ShouldHidePinDefaultValue ( UEdGraphPin* Pin )	If we should disallow viewing and editing of the supplied pin
bool	TryCreateConnection ( UEdGraphPin* A, UEdGraphPin* B )	Try to make a connection between two pins.

Constants

Name	Description
ActivePinColor	Color of certain pins/connections.
AlphaPinColor
CurrentCacheRefreshID	ID for checking dirty status of node titles against, increases whenever.
InactivePinColor
PC_Exec
PC_Mask	Allowable PinType.PinCategory values.
PC_MaterialInput
PC_Optional
PC_Required
PN_Execute
PSC_Alpha
PSC_Blue
PSC_Green
PSC_Red	Common PinType.PinSubCategory values.
PSC_RGBA

Deprecated Functions

		Name	Description
	void	GetBreakLinkToSubMenuActions ( UToolMenu* Menu, UEdGraphPin* InGraphPin )	Populating the break link to menu is handled through common pin actions on graph schemas. This function is no longer necessary.
	void	SelectAllInputNodes ( UEdGraph* Graph, UEdGraphPin* InGraphPin )	Selecting all connected nodes is now handled through common pin actions on graph schemas. See SGraphEditorImpl::SelectAllNodesInDirection.