1 /*

     2 * Copyright (c) 2005-2007 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 CPbk2ImageManager implementation classes.

    16 *

    17 */

    18 

    19 

    20 #ifndef CPBK2IMAGEREADERBASE_H

    21 #define CPBK2IMAGEREADERBASE_H

    22 

    23 //  INCLUDES

    24 #include <e32base.h>

    25 #include "CPbk2ImageManagerImpl.h"

    26 #include "MPbk2ImageReaderObserver.h"

    27 

    28 //  FORWARD DECLARATIONS

    29 class MPbk2ImageGetObserver;

    30 class CPbk2ImageReader;

    31 class TPbk2ImageManagerParams;

    32 

    33 

    34 // CLASS DECLARATION

    35 

    36 /**

    37  * Implementation base class for thumbnail readers.

    38  */

    39 NONSHARABLE_CLASS(CPbk2ImageReaderBase) : 

    40         public CBase, 

    41         public MPbk2ImageReader,

    42         private MPbk2ImageReaderObserver

    43     {

    44     protected: // interface

    45         /**

    46          * Constructor.

    47 		 * @param aObserver thumbnail get observer

    48          */

    49         CPbk2ImageReaderBase(MPbk2ImageGetObserver& aObserver);

    50 

    51         /**

    52          * Second phase constructor.

    53          */

    54         void ConstructL();

    55    

    56         /**

    57          * Destructor. Cancels any previously executing read operation and

    58          * destroys this object.

    59          */

    60         ~CPbk2ImageReaderBase();

    61 

    62         /**

    63          * Returns the image reader.

    64          * 

    65          * @return Image reader

    66          */

    67         CPbk2ImageReader& ImageReader()

    68 			{

    69 			return *iImageReader;

    70 			}

    71 

    72     public:  // from MPbkThumbnailReader

    73         void CancelRead();

    74 

    75     private:  // from MPbkImageReaderObserver

    76         void ImageReadComplete(CPbk2ImageReader& aReader, CFbsBitmap* aBitmap);

    77         void ImageReadFailed(CPbk2ImageReader& aReader, TInt aError);

    78         void ImageOpenComplete(CPbk2ImageReader& aReader);

    79 

    80     private: // data members

    81         /// Ref: observer

    82         MPbk2ImageGetObserver& iObserver;

    83         /// Own: image reader

    84         CPbk2ImageReader* iImageReader;

    85     };

    86 

    87 

    88 #endif // CPBK2IMAGEREADERBASE_H

    89 

    90 // End of File