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 "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:   CVideoThumbnailData class definition*

    15 */

    16 

    17 #ifndef __VIDEOTHUMBNAILDATA_H__

    18 #define __VIDEOTHUMBNAILDATA_H__

    19 

    20 // INCLUDES

    21 #include <qobject.h>

    22 #include <qhash.h>

    23 #include <qpair.h>

    24 #include <qicon.h>

    25 #include <qset.h>

    26 

    27 // FORWARD DECLARATIONS

    28 class VideoSortFilterProxyModel;

    29 

    30 class VideoThumbnailData : public QObject

    31 {

    32     /**

    33      * defined to be able to use signals and slots

    34      */

    35     Q_OBJECT

    36     

    37     /**

    38      * disable copy-constructor and assignment operator

    39      */

    40 	Q_DISABLE_COPY(VideoThumbnailData) 

    41 

    42 public: // Constructor

    43 

    44     /* 

    45      * Thumbnail fetch priorities

    46      */

    47     enum VideoThumbnailPriority

    48     {

    49         VideoThumbnailPriorityBackground = 2000,

    50         VideoThumbnailPriorityLow = 5000,

    51         VideoThumbnailPriorityMedium = 10000,

    52         VideoThumbnailPriorityHigh = 2000 

    53     };

    54     

    55     /**

    56      * Returns singleton instance for this class.

    57      *

    58      * @return The singleton instance.

    59      * 

    60      */

    61     static VideoThumbnailData &instance();

    62  	

    63     /**

    64      * Starts background thumbnail fetching.

    65      *

    66      * @param fetchIndex index where to start the background thumbnail fetching.

    67      *  

    68      */

    69     void startBackgroundFetching(VideoSortFilterProxyModel *model, int fetchIndex);

    70     

    71     /**

    72      * Enables or disables thumbnail background fetching. Default is enabled.

    73      * 

    74      * @param enable true enables and false disables thumbnail background fetching.

    75      */

    76     void enableBackgroundFetching(bool enable);

    77     

    78     /**

    79      * Frees allocated data for thumbnails and cancels ongoing fetches.

    80      */

    81     void freeThumbnailData();

    82     

    83 private:

    84     

    85     /**

    86      * Default constructor

    87      */

    88     VideoThumbnailData();  

    89     

    90     /**

    91      * Destructor

    92      */

    93     ~VideoThumbnailData(); 

    94     

    95 public:

    96     static int mEnableBackgroundThumbnailFetchingCallCount;

    97     static int mStartFetchingThumbnailsCallCount;

    98     static int mStartFetchingThumbnailsThumbnailCount;

    99     static int mInstanceCallCount;

   100     static int mFreeThumbnailDataCallCount;

   101     static int mBackgroundThumbnailFetchingEnabled;

   102     static int mStartBackgroundFetchingCallCount;

   103     

   104 private: // data

   105     

   106     

   107 };

   108 #endif  // __VIDEOTHUMBNAILDATA_H__

   109 

   110 // End of file