WidgetMaterialTrackUtilities.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
 
class UMaterialInterface;
class UWidget;
 
class FWidgetMaterialHandle
{
public:
    FWidgetMaterialHandle()
        : TypeName(NAME_None)
        , Data(nullptr)
    {}
 
    FWidgetMaterialHandle(FName InTypeName, void* InData)
        : TypeName(InTypeName)
        , Data(InData)
    {}
 
    friend uint32 GetTypeHash(const FWidgetMaterialHandle& In)
    {
        return HashCombine(GetTypeHash(In.TypeName), GetTypeHash(In.Data));
    }
    friend bool operator==(const FWidgetMaterialHandle& A, const FWidgetMaterialHandle& B)
    {
        return A.TypeName == B.TypeName && A.Data == B.Data;
    }
    friend bool operator!=(const FWidgetMaterialHandle& A, const FWidgetMaterialHandle& B)
    {
        return !(A == B);
    }
 
    bool IsValid() const { return TypeName != NAME_None && Data != nullptr; }
 
    UMG_API UMaterialInterface* GetMaterial() const;
 
    UMG_API void SetMaterial(UMaterialInterface* InMaterial, UWidget* OwnerWidget);
 
private:
    FName TypeName;
    void* Data;
};
 
struct FWidgetMaterialPropertyPath
{
    FWidgetMaterialPropertyPath(const TArray<FProperty*>& InPropertyPath, const FString& InDisplayName)
        : PropertyPath(InPropertyPath)
        , DisplayName(InDisplayName)
    {}
 
    TArray<FProperty*> PropertyPath;
    FString DisplayName;
};
namespace WidgetMaterialTrackUtilities
{
    UMG_API FWidgetMaterialHandle GetMaterialHandle(UWidget* Widget, TArrayView<const FName> BrushPropertyNamePath);
 
    UMG_API void GetMaterialBrushPropertyPaths( UWidget* Widget, TArray<FWidgetMaterialPropertyPath>& MaterialBrushPropertyPaths );
 
    UMG_API FName GetTrackNameFromPropertyNamePath( TArrayView<const FName> PropertyNamePath );
}