/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description :

 *

 */

#ifndef TSGRAPHICFILESCALINGHANDLER_H

#define TSGRAPHICFILESCALINGHANDLER_H

#ifndef __E32SVR_H__

#define __E32SVR_H__

#endif

#ifndef SYMBIAN_ENABLE_PUBLIC_PLATFORM_HEADER_SPLIT

#define SYMBIAN_ENABLE_PUBLIC_PLATFORM_HEADER_SPLIT

#endif

#include <bitmaptransforms.h>

class CImageDecoder;

class CFbsBitmap;

class MImageReadyCallBack

{

public:

    virtual void ImageReadyCallBack(TInt error, const CFbsBitmap *bitmap ) = 0;

};

class CTsGraphicFileScalingHandler : public CActive

{

public:

enum TCurrentOperation{

        ENone = 0,

        EConvertBitmapFromFile = 1,

        EScale = 2

    };

enum TKindOfScaling

{

   EIgnoreAspectRatio = 0,

   EKeepAspectRatio = 1,

   EKeepAspectRatioByExpanding = 2,

};

    IMPORT_C ~CTsGraphicFileScalingHandler();

    IMPORT_C static CTsGraphicFileScalingHandler* NewL(MImageReadyCallBack &aNotify,

        RFs &aFs,

        const TDesC &aFileName,

        const TDesC8& aMimeType,

        const TSize &aNewSize,

        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio);

    IMPORT_C static CTsGraphicFileScalingHandler* NewLC(MImageReadyCallBack &aNotify,

        RFs &aFs,

        const TDesC &aFileName,

        const TDesC8& aMimeType,

        const TSize &aNewSize,

        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio);

protected:

    void DoCancel();

    void RunL();

    TInt RunError(TInt);

private:

    void ConstructL(RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType);

    CTsGraphicFileScalingHandler(MImageReadyCallBack &aNotify,

        const TSize &aNewSize,

        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio);

    TSize Scaling();

private:

    MImageReadyCallBack &mNotify;

    CImageDecoder *mImageDecoder;

    CFbsBitmap *mBitmapFromFile;

    CFbsBitmap *mBitmapOutput;

    CBitmapScaler *mBitmapScaler;

    TSize mNewSize;

    TBool mKindOfScaling;

    TCurrentOperation mCurrentOperation;

};

#endif // TSGRAPHICFILESCALINGHANDLER_H