MaterialExpressionCollectionParameter.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Misc/Guid.h"
#include "Materials/MaterialExpression.h"
#include "MaterialExpressionCollectionParameter.generated.h"
 
struct FPropertyChangedEvent;
 
UCLASS(hidecategories=object, MinimalAPI)
class UMaterialExpressionCollectionParameter : public UMaterialExpression
{
    GENERATED_UCLASS_BODY()
 
    
    UPROPERTY(EditAnywhere, Category=MaterialExpressionCollectionParameter)
    TObjectPtr<class UMaterialParameterCollection> Collection;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionCollectionParameter)
    FName ParameterName;
 
    UPROPERTY()
    FGuid ExpressionGUID;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionCollectionParameter)
    FName Group;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionCollectionParameter)
    int32 SortPriority = 32;
 
    UPROPERTY()
    FGuid ParameterId;
 
    //~ Begin UObject Interface.
#if WITH_EDITOR
    virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif // WITH_EDITOR
    virtual void PostLoad() override;
    //~ End UObject Interface.
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual void Build(MIR::FEmitter& Emitter) override;
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override;
 
    virtual bool HasAParameterName() const override { return true; }
    virtual FName GetParameterName() const override { return ParameterName; }
    virtual void SetParameterName(const FName& Name) override { ParameterName = Name; }
 
    ENGINE_API virtual bool GetParameterValue(FMaterialParameterMetadata& OutMeta) const;
    ENGINE_API virtual bool SetParameterValue(const FName& Name, const FMaterialParameterMetadata& Meta, EMaterialExpressionSetParameterValueFlags Flags = EMaterialExpressionSetParameterValueFlags::None);
 
    virtual void ValidateParameterName(const bool bAllowDuplicateName) override {};
 
    virtual bool MatchesSearchQuery( const TCHAR* SearchQuery ) override;
 
#endif
    //~ End UMaterialExpression Interface
};