1 /*

     2 * Copyright (c) 2009 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 the License "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:    HG VOD class for handling thumbnail loading*

    15 */

    16 

    17 

    18 

    19 

    20 #ifndef VCXHGVODTHUMBNAILMANAGER_H

    21 #define VCXHGVODTHUMBNAILMANAGER_H

    22 

    23 #include <coemain.h>

    24 

    25 #include "vcxnsimageconverterobserver.h"

    26 

    27 class CVcxNsImageConverter;

    28 class MVcxHgVodThumbnailObserver;

    29 class CVcxHgVodThumbnailRequest;

    30 

    31 // CLASS DECLARATION

    32 /**

    33  *  Utility class for handling thumbnail loading

    34  *

    35  *  @lib vcxhgvodui.lib

    36  *  @since S60 v5.0

    37  */

    38 NONSHARABLE_CLASS( CVcxHgVodThumbnailManager ): public CBase,

    39                                                 public MVcxNsImageConverterObserver

    40     {

    41 public:

    42     

    43     static CVcxHgVodThumbnailManager* NewL( RFs& aFsSession );

    44     

    45     static CVcxHgVodThumbnailManager* NewLC( RFs& aFsSession );

    46 

    47     virtual ~CVcxHgVodThumbnailManager();

    48     

    49     /**

    50      * Resets the thumbnail fetching buffer from all clients. Ok, as we should have

    51      * only one client that actually matters (ie. displays thumbnails on screen).

    52      */

    53     void Reset();

    54     

    55     /**

    56      * Adds a new thumbnail fetching request to buffer.

    57      * 

    58      * @param aObserver Observer which is notified when thumbnail is ready.

    59      * @param aThumbnailPath Path to the thumbnail file.

    60      * @param aRequestedSize Size of the needed thumbnail.

    61      * @param aClientId Client specific unique id for the thumbnail.

    62      */

    63     void AddThumbnailRequestL( MVcxHgVodThumbnailObserver& aObserver,

    64             const TDesC& aThumbnailPath, TSize aRequestedSize, TInt64 aClientId );

    65 

    66     /**

    67      * From MVcxNsImageConverterObserver

    68      * Notify about completed image conversion.

    69      *

    70      * @param aError Error code.

    71      * @param aIcon  Pointer to the created icon, ownership is transferred.

    72      *               NULL if conversion failed with error.

    73      */  

    74     void ImageConversionCompletedL( TInt aError, CGulIcon* aIcon );        

    75 

    76 private:    

    77     

    78     CVcxHgVodThumbnailManager();

    79 

    80     void ConstructL( RFs& aFsSession );

    81     

    82 private: // data

    83     

    84     /**

    85      * Converts the images to requested size.

    86      * Own.

    87      */

    88     CVcxNsImageConverter* iImageConverter;

    89     

    90     /**

    91      * Buffer for thumbnail requests. Owns items in array.

    92      */

    93     RPointerArray<CVcxHgVodThumbnailRequest> iRequestBuffer;

    94     

    95     };

    96 

    97 #endif // VCXHGVODTHUMBNAILMANAGER_H