QtMobility Reference Documentation

coverartmodel.cpp Example File

mediabrowser/coverartmodel.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
 ** This file is part of the examples of the Qt Mobility Components.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
 **     of its contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "coverartmodel.h"

 #include "albumdelegate.h"

 #include <QtCore/qcryptographichash.h>
 #include <QtCore/qdir.h>
 #include <QtCore/qurl.h>

 #define QT_GALLERY_MEDIA_ART_ILLEGAL_CHARACTERS \
     "\\(.*\\)|\\{.*\\}|\\[.*\\]|<.*>|[\\(\\)_\\{\\}\\[\\]\\!@#$\\^&\\*\\+\\=\\|\\\\/\"'\\?~`]"

 CoverArtModel::CoverArtModel(QAbstractGallery *gallery, QObject *parent)
     : ThumbnailModel(gallery, parent)
 #if defined(Q_OS_UNIX) && !(defined(Q_OS_SYMBIAN) || defined(Q_OS_MAC))
     , illegalCharacters(QLatin1String(QT_GALLERY_MEDIA_ART_ILLEGAL_CHARACTERS))
     , whitespace(QCryptographicHash::hash(" ", QCryptographicHash::Md5).toHex())
 #endif
 {
 }

 #if defined(Q_OS_UNIX) && !(defined(Q_OS_SYMBIAN) || defined(Q_OS_MAC))
 QUrl CoverArtModel::imageUrl(const QModelIndex &index) const
 {
     QString title = index.data(Qt::DisplayRole).toString();
     QString artist = index.data(AlbumDelegate::Artist).toString();

     QString fileName = QDir::homePath()
             + QLatin1String("/.cache/media-art/album-")
             + hash(artist)
             + QLatin1Char('-')
             + hash(title)
             + QLatin1String(".jpeg");

     return QUrl::fromLocalFile(fileName);
 }

 QString CoverArtModel::hash(const QString &identifier) const
 {
     if (identifier.isEmpty()) {
         return whitespace;
     } else {
         return QCryptographicHash::hash(
                 identifier.toLower().remove(illegalCharacters).simplified().toUtf8(),
                 QCryptographicHash::Md5).toHex();
     }
 }
 #endif
X

Thank you for giving your feedback.

Make sure it is related to this specific page. For more general bugs and requests, please use the Qt Bug Tracker.