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:

    15 *

    16 */

    17 

    18 #include <QString>

    19 

    20 #include "cxutils.h"

    21 #include "thumbnailmanager_qt.h"

    22 

    23 

    24 

    25 

    26 /*!

    27 * ThumbnailManager::ThumbnailManager

    28 */

    29 ThumbnailManager::ThumbnailManager(QObject* parentPtr)

    30     : mTimer(this)

    31 {

    32     Q_UNUSED(parentPtr);

    33 

    34     mCurrentThumbnailId = 0;

    35     mThumbnailManagerIds.clear();

    36     mTimer.setSingleShot(true);

    37     connect(&mTimer, SIGNAL(timeout()),

    38             this, SLOT(emulateThumbnailReady()));

    39 }

    40 

    41 

    42 /*!

    43 * ThumbnailManager::~ThumbnailManager

    44 */

    45 ThumbnailManager::~ThumbnailManager()

    46 {

    47 }

    48 

    49 

    50 

    51 /*!

    52 * create thumbnail for the given image/video file name and data.

    53 */

    54 int ThumbnailManager::getThumbnail(const QString& filename, void * clientData, int priority)

    55 {

    56     CX_DEBUG_ENTER_FUNCTION();

    57     Q_UNUSED(priority);

    58         

    59     int id = 0;

    60 

    61     if (filename.isNull() || filename.isEmpty()) {

    62         id = -1;

    63     } else {

    64         // generate thumbnail id

    65         id = mCurrentThumbnailId;

    66         mThumbnailManagerIds.append(mCurrentThumbnailId++);

    67     }

    68 

    69     // try emulating thumbnail ready

    70     mTimer.start(1000);

    71 

    72     CX_DEBUG_EXIT_FUNCTION();

    73 

    74     return id;

    75 }

    76 

    77 int ThumbnailManager::setThumbnail( const QImage& source, const QString& fileName,

    78       void *clientData, int priority)

    79 {

    80     Q_UNUSED(clientData);

    81     Q_UNUSED(priority);

    82     Q_UNUSED(source);

    83 

    84     int status = KErrNone;

    85 

    86     if (fileName.isNull() || fileName.isEmpty()) {

    87         status = KErrNotFound;

    88     } else {

    89         // generate thumbnail id

    90         mThumbnailManagerIds.append(mCurrentThumbnailId);

    91     }

    92 

    93     emit thumbnailReady(QPixmap(), clientData, mCurrentThumbnailId, status);

    94 

    95     mCurrentThumbnailId++;

    96 

    97     CX_DEBUG_EXIT_FUNCTION();

    98 

    99     return mCurrentThumbnailId;

   100 }

   101 

   102 /*!

   103 * start canceling creating thumbnail operation

   104 */

   105 bool ThumbnailManager::cancelRequest(int id)

   106 {

   107     return mThumbnailManagerIds.contains(id);

   108 }

   109 

   110 

   111 /*!

   112 * slot that emulates thumbnail ready

   113 */

   114 void ThumbnailManager::emulateThumbnailReady()

   115 {

   116     // get the current thumbnail id

   117     int id = mCurrentThumbnailId - 1;

   118     int status = KErrNone;

   119     

   120     if (id == -1) {

   121         // if there are no valid thumbnails

   122         status = KErrNotFound;

   123     }

   124     emit thumbnailReady(QPixmap(), 0, id, status);

   125 }

   126