SlateTextureAtlasInterface.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/Interface.h"
#include "Engine/Texture.h"
#include "SlateTextureAtlasInterface.generated.h"
 
struct FSlateAtlasData
{
public:
    FSlateAtlasData(UTexture* InAtlasTexture, FVector2D InStartUV, FVector2D InSizeUV)
        : AtlasTexture(InAtlasTexture)
        , StartUV(InStartUV)
        , SizeUV(InSizeUV)
    {
    }
 
public:
    UTexture* AtlasTexture;
 
    FVector2D StartUV;
 
    FVector2D SizeUV;
 
    FVector2D GetSourceDimensions() const
    {
        if ( AtlasTexture )
        {
            return FVector2D(AtlasTexture->GetSurfaceWidth() * SizeUV.X, AtlasTexture->GetSurfaceHeight() * SizeUV.Y);
        }
        else
        {
            return FVector2D(0, 0);
        }
    }
};
 
 
UINTERFACE(meta=( CannotImplementInterfaceInBlueprint ), MinimalAPI)
class USlateTextureAtlasInterface : public UInterface
{
    GENERATED_UINTERFACE_BODY()
};
 
class ISlateTextureAtlasInterface
{
    GENERATED_IINTERFACE_BODY()
 
public:
 
    virtual FSlateAtlasData GetSlateAtlasData() const = 0;
};