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 #include <thumbnailmanager_qt.h>

    20 

    21 #include "cxutils.h"

    22 #include "cxethumbnailmanagersymbian.h"

    23 

    24 //#define CXE_USE_THUMBNAIL_MANAGER

    25 

    26 

    27 /*!

    28 * CxeThumbnailManagerSymbian::CxeThumbnailManagerSymbian

    29 */

    30 CxeThumbnailManagerSymbian::CxeThumbnailManagerSymbian()

    31 {

    32     CX_DEBUG_ENTER_FUNCTION();

    33 

    34 #ifdef CXE_USE_THUMBNAIL_MANAGER

    35 

    36     mThumbnailManager = new ThumbnailManager();

    37 

    38     // connect thumbnail ready signal from thumbnailmanager

    39     connect(mThumbnailManager, SIGNAL(thumbnailReady(QPixmap, void *, int, int)),

    40             this, SLOT(thumbnailReady(QPixmap, void *, int, int)));

    41 #endif

    42 

    43     CX_DEBUG_EXIT_FUNCTION();

    44 }

    45 

    46 

    47 /*!

    48 * CxeThumbnailManagerSymbian::~CxeThumbnailManagerSymbian

    49 */

    50 CxeThumbnailManagerSymbian::~CxeThumbnailManagerSymbian()

    51 {

    52     CX_DEBUG_ENTER_FUNCTION();

    53 

    54 #ifdef CXE_USE_THUMBNAIL_MANAGER

    55     mThumbnailRequests.clear();

    56     delete mThumbnailManager;

    57 #endif

    58 

    59     CX_DEBUG_EXIT_FUNCTION();

    60 }

    61 

    62 

    63 

    64 /*!

    65 * Creates a thumbnail based on the snapshot data.

    66 @param filename - name of the image/video filename

    67 @param snapshot - snapshot data from image/video

    68 */

    69 void CxeThumbnailManagerSymbian::createThumbnail(const QString& filename,

    70                                                  QPixmap /*snapshot*/)

    71 {

    72     CX_DEBUG_ENTER_FUNCTION();

    73 

    74 #ifdef CXE_USE_THUMBNAIL_MANAGER

    75     TPtrC16 fName(reinterpret_cast<const TUint16*>(filename.utf16()));

    76     CX_DEBUG(("Create thumbnail! filename = %s", filename.toAscii().constData()));

    77 

    78     if (mThumbnailManager) {

    79         CX_DEBUG(("creating thumbnails"));

    80         //!@todo Thumbnail manager interface needs to be changed to use QImage

    81         // instead of QPixmap for setThumbnail. Until then, using qetThumbnail.

    82         int thumbnailId = mThumbnailManager->getThumbnail(filename, 0);

    83         if (thumbnailId != -1) {

    84             CX_DEBUG(("Thumbnail ID = %d", thumbnailId));

    85             mThumbnailRequests.insert(filename, thumbnailId);

    86         } else {

    87             CX_DEBUG(("error initializing data to thumbnail manager"));

    88         }

    89     }

    90 #else

    91     Q_UNUSED(filename);

    92 #endif

    93 

    94     CX_DEBUG_EXIT_FUNCTION();

    95 }

    96 

    97 

    98 

    99 /*!

   100 * start canceling creating thumbnail operation

   101 */

   102 void CxeThumbnailManagerSymbian::cancelThumbnail(const QString& filename)

   103 {

   104     CX_DEBUG_ENTER_FUNCTION();

   105 

   106 #ifdef CXE_USE_THUMBNAIL_MANAGER

   107     if (mThumbnailRequests.contains(filename)) {

   108         int thumbnailId = mThumbnailRequests.value(filename);

   109         if (mThumbnailManager &&

   110             mThumbnailManager->cancelRequest(thumbnailId)) {

   111             // thumbnail creation cancelled sucessfully

   112             mThumbnailRequests.remove(filename);

   113         }

   114     }

   115 #else

   116     Q_UNUSED(filename);

   117 #endif

   118     CX_DEBUG_EXIT_FUNCTION();

   119 }

   120 

   121 

   122 /**!

   123 * Slot that notifies when final thumbnail bitmap generation or loading is complete.

   124 * @param pixmap     An object representing the resulting thumbnail.

   125 * @param clientData Client data

   126 * @param id         Request ID for the operation

   127 * @param errorCode  error code

   128 */

   129 void CxeThumbnailManagerSymbian::thumbnailReady(QPixmap thumbnail, void * data, int id, int error)

   130 {

   131 

   132     CX_DEBUG_ENTER_FUNCTION();

   133 

   134     Q_UNUSED(data);

   135 #ifdef CXE_USE_THUMBNAIL_MANAGER

   136     CX_DEBUG(("CxeThumbnailManagerSymbian::thumbnailReady error = %d", error));

   137 

   138     QString key;

   139     QHash<QString, int>::const_iterator i = mThumbnailRequests.constBegin();

   140 

   141     while (i != mThumbnailRequests.constEnd()) {

   142         if (i.value() == id) {

   143             key = i.key();

   144             break;

   145         }

   146         ++i;

   147     }

   148 

   149     if (mThumbnailRequests.contains(key)) {

   150         CX_DEBUG(("Thumbnail created for filename = %s", key.toAscii().constData()));

   151         mThumbnailRequests.remove(key);

   152         emit thumbnailReady(thumbnail, error);

   153     }

   154 #else

   155     Q_UNUSED(thumbnail);

   156     Q_UNUSED(id);

   157     Q_UNUSED(error);

   158 #endif

   159 

   160     CX_DEBUG_EXIT_FUNCTION();

   161 }