/*

* Copyright (c) 2005-2007 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: 

*       Phonebook2 contact item field embedded thumbnail reader.

*       Reads an database-embedded picture from a field.

*

*/

#ifndef CPBK2EMBEDDEDIMAGE_H

#define CPBK2EMBEDDEDIMAGE_H

//  INCLUDES

#include "CPbk2ImageReaderBase.h"

#include "CPbk2ImageWriterBase.h"

// FORWARD DECLARATIONS

class MVPbkBaseContactField;

class MVPbkStoreContactField;

class TPbk2ImageManagerParams;

class CVPbkContactManager;

class MPbk2ImageData;

// CLASS DECLARATION

/**

 * Phonebook contact item field embedded thumbnail reader.

 * Reads a database-embedded picture from a field.

 */

NONSHARABLE_CLASS(CPbk2EmbeddedImageReader) : 

        public CPbk2ImageReaderBase

    {

    public: // interface

        /**

         * Creates a new instance of this class.

         *

         * @param aField    field to read the thumbnail from.

         * @param aObserver observer to notify about progress of this 

         *                  operation.

         */

        static CPbk2EmbeddedImageReader* NewLC(

                const MVPbkBaseContactField& aField,

                MPbk2ImageGetObserver& aObserver );

        /**

         * Destructor. Cancels any previously executing read operation and

         * destroys this object.

         */

        ~CPbk2EmbeddedImageReader();

    public:  // from MPbk2ImageReader

        void StartReadL(const TPbk2ImageManagerParams* aParameters = NULL);

        HBufC8* CreateImageDataLC();

    private: // implementation

        CPbk2EmbeddedImageReader(

                const MVPbkBaseContactField& aField,

                MPbk2ImageGetObserver& aObserver );

        void ConstructL();

		const TDesC8& ImageBuffer() const;

    private: // data members

        /// Ref: Contact item field

        const MVPbkBaseContactField& iField; 

        /// Own: Image buffer

        HBufC8* iImageBuffer;

    };

/**

 * Phonebook contact item field embedded thumbnail writer.

 * Writes a database-embedded picture to a field.

 */

NONSHARABLE_CLASS(CPbk2EmbeddedImageWriter) : 

        public CPbk2ImageWriterBase 

    {

    public: // interface

        /**

         * Creates a new instance of this class.

         *

         * @param aContactManager Contact manager

         * @param aField    field to write the thumbnail to.

         * @param aObserver observer to notify about progress of this 

         *                  operation.

         */

        static CPbk2EmbeddedImageWriter* NewLC

            (CVPbkContactManager& aContactManager,

            MVPbkStoreContactField& aField, 

            MPbk2ImageSetObserver& aObserver);

        /**

         * Destructor.

         */

        ~CPbk2EmbeddedImageWriter();

    private: // from CPbkThumbnailWriterBase

        CImageEncoder* CreateImageWriterL();

        void StoreImageL(const MPbk2ImageData& aImageData);

        void StoreImageL(CImageEncoder& aImageWriter);

        void DoCancel();

        TSize ImageSize() const;

    private: // implementation

        CPbk2EmbeddedImageWriter

            (CVPbkContactManager& aContactManager,

            MVPbkStoreContactField& aField, 

            MPbk2ImageSetObserver& aObserver);

        void ConstructL();

		TBool IsCodImageL() const;

		TBool IsSameFieldType(const MVPbkFieldType& aFieldType) const;

    private: // data members

        /// Ref: Contact manager

        CVPbkContactManager& iContactManager;

        /// Ref: Contact item field

        MVPbkStoreContactField& iField; 

        /// Own: image buffer

        HBufC8* iBitmapBlob;

    };

#endif // CPBK2EMBEDDEDIMAGE_H

// End of File