1 /*

     2 * Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *     Class CPbkThumbnailManager implementation classes.

    16 *

    17 */

    18 

    19 

    20 #ifndef MPBK2IMAGEREADEROBSERVER_H

    21 #define MPBK2IMAGEREADEROBSERVER_H

    22 

    23 //  INCLUDES

    24 #include <e32def.h>

    25 

    26 // FORWARD DECLARATIONS

    27 class CPbk2ImageReader;

    28 class CFbsBitmap;

    29 

    30 // CLASS DECLARATION

    31 

    32 /**

    33  * Observer interface for CPbkThumbnailReader.

    34  */

    35 class MPbk2ImageReaderObserver

    36 	{

    37     public:

    38         /**

    39          * Called by CPbkImageReader when image read is complete.

    40          *

    41          * @param aReader   the completed reader.

    42          * @param aBitmap   the read image.

    43          */

    44         virtual void ImageReadComplete

    45             (CPbk2ImageReader& aReader, CFbsBitmap* aBitmap) =0;

    46 

    47         /**

    48          * Called by CPbkImageReader if image reading fails.

    49          *

    50          * @param aReader   the failed reader.

    51          * @param aError    error code of the failure.

    52          */

    53         virtual void ImageReadFailed(CPbk2ImageReader& aReader, TInt aError) =0;

    54 

    55         /**

    56          * Called by CPbkImageReader when image open is complete.

    57          * After this event CPbkImageReader functions FrameCount() and 

    58          * FrameInfo() can be called.

    59          * Default implementation is empty as most clients are interested of 

    60          * ImageReadComplete/Failed events only.

    61          *

    62          * @param aReader   the completed reader.

    63          */

    64         virtual void ImageOpenComplete(CPbk2ImageReader& /*aReader*/)

    65 			{

    66 			}

    67     };

    68 

    69 #endif // MPBK2IMAGEREADEROBSERVER_H

    70 

    71 // End of File