/*

* Copyright (c) 2009-2009 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:  Implementation of MyCard image loader

*

*/

#ifndef CCAPPMYCARDIMAGELOADER_H

#define CCAPPMYCARDIMAGELOADER_H

#include <CCAppImageDecoding.h>

class MVPbkStoreContact;

class CCCAppImageDecoding;

class CFbsBitmap;

/**

 * MyCard image loading observer class

 */

class MMyCardImageLoaderObserver

{

public:

    /**

     * Notification method to report loaded images to observer.

     * 

	 * @param aThumbnail loaded contact thumbnail. Ownership transferred to

	 *        observer.

     */

    virtual void ThumbnailReady( CFbsBitmap* aThumbnail ) = 0;

    /**

     * Notification method to report failed load requests

     * 

     * @param aError Generic symbian error code

     */

    virtual void ThumbnailLoadError( TInt aError ) = 0;

protected:

    virtual ~MMyCardImageLoaderObserver() {}

};

/**

 *  Contact image loader

 *

 *  @lib ccappmycardplugin.dll

 *  @since S60 9.2

 */

NONSHARABLE_CLASS( CCCAppMyCardImageLoader ) : 

    public CBase,

    public MCCAppImageDecodingObserver

{

public:

    /**

     * Two-phased constructor.

     */

    static CCCAppMyCardImageLoader* NewL(

        MMyCardImageLoaderObserver& aObserver );

    /**

     * Destructor.

     */

    ~CCCAppMyCardImageLoader();

public: // Interface

    /**

     * Start loading contacts image. Will cancel any previous requests.

     * Once loading is complete the new image is delivered to observer 

     * with a call to MMyCardImageLoaderObserver::ThumbnailReady.

     * 

     * @param aContact source contact for the image

     */

    void LoadContactImageL( 

            MVPbkStoreContact& aContact, 

            const TSize& aThumbnailSize );

    /**

     * Start loading contacts image. Will cancel any previous requests.

     * Once loading is complete the new image is delivered to observer 

     * with a call to MMyCardImageLoaderObserver::ThumbnailReady.

     * 

     * @param aImageData source data for the image

     * @param aImageFileName filename of the image

     */

    void LoadImageL( 

        const TDesC8& aImageData,

        const TDesC& aImageFileName,

        const TSize& aThumbnailSize );

    void ResizeImageL( const TSize& aThumbnailSize );

private:    // From MCCAppImageDecodingObserver

    void BitmapReadyL( CFbsBitmap* aBitmap );

private: // constructors

    /**

     * Constructor

     */

    inline CCCAppMyCardImageLoader(

        MMyCardImageLoaderObserver& aObserver );

private: // data

	/// Not own. Observer

	MMyCardImageLoaderObserver& iObserver;

	/// Own.

	HBufC8* iImageBuffer;

    /// Own.

    HBufC* iImageFileName;

    /// Own

    CCCAppImageDecoding* iImageDecoding;

};

#endif // CCAPPMYCARDIMAGELOADER_H

// End of File