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: ThumbnailManager stub for testing MpPlaybackData

    15 *

    16 */

    17 

    18 #ifndef THUMBNAILMANAGER_QT_H

    19 #define THUMBNAILMANAGER_QT_H

    20 

    21 #include <qobject>

    22 #include <QPixmap.h>

    23 

    24 

    25 /** default priority value */

    26 const int tnmWrapperPriorityIdle = -100;

    27 

    28 class ThumbnailManager : public QObject

    29     {

    30     Q_OBJECT

    31 

    32 public:

    33 

    34 

    35     /** Thumbnail size. */

    36     enum ThumbnailSize

    37     {

    38         /**

    39          * Small thumbnail

    40          */

    41         ThumbnailSmall = 0,

    42         /**

    43          * Medium thumbnail

    44          */

    45         ThumbnailMedium,

    46         /**

    47          * Large thumbnail

    48          */

    49         ThumbnailLarge

    50     };

    51 

    52     /** Mode of thumbnail creation. */

    53     enum ThumbnailMode

    54         {

    55         /**

    56          * Default mode. This means that:

    57          * - Thumbnail must be as large as requested (unless the actual object is smaller).

    58          * - Smaller thumbnails may be up scaled to desired resolution.

    59          * - Aspect ratio is maintained and thumbnails are not cropped. The

    60          *   resulting thumbnail may smaller in either width or height if

    61          *   the aspect ratio of the object does not match the aspect ratio

    62          *   of the requested size.

    63          */

    64         Default = 0,

    65 

    66         /**

    67          * Allow thumbnails which are smaller than requested are. Thumbnail

    68          * bitmaps are never up scaled if this flag is set.

    69          */

    70         AllowAnySize = 1,

    71 

    72         /**

    73          * New thumbnail images are not created if this flag is set. Only

    74          * existing thumbnails may be returned. If a requested thumbnail does

    75          * not exist null pixmap will be returned.

    76          */

    77         DoNotCreate = 2,

    78 

    79         /**

    80          * Thumbnail images are cropped to match requested aspect ratio. If

    81          * this mode is set, the size of the resulting thumbnail always

    82          * matches the requested size.

    83          */

    84         CropToAspectRatio = 4

    85     };

    86 

    87     /**  Quality versus speed preference setting */

    88     enum QualityPreference

    89     {

    90         /**

    91          * Prefer thumbnails in the highest quality possible disregarding

    92          * any negative impact on performance.

    93          */

    94         OptimizeForQuality,

    95 

    96         /**

    97          * Get thumbnails as fast as possible, even if

    98          * it means lower quality.

    99          */

   100         OptimizeForPerformance

   101     };

   102 

   103     // Test utility functions

   104     static int getInitCounter();

   105     static void resetInitCounter();

   106 

   107     // Stub functions

   108     ThumbnailManager( QObject* parentPtr = NULL );

   109     virtual ~ThumbnailManager();

   110     bool setMode( ThumbnailMode mode );

   111     bool setQualityPreference( QualityPreference qualityPreference );

   112     bool setThumbnailSize( ThumbnailSize thumbnailSize );

   113     int getThumbnail( const QString& fileName, void * clientData = NULL,

   114             int priority = tnmWrapperPriorityIdle );

   115     bool cancelRequest( int id );

   116 

   117 signals:

   118 

   119     void thumbnailReady( QPixmap , void * , int , int );

   120 

   121 public:

   122 

   123     bool    mGetThumbFails;

   124     int     mThumbnailReqCounter;

   125     int     mCancelCounter;

   126 

   127 };

   128 

   129 #endif // THUMBNAILMANAGER_QT