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<pre><span class="comment"> /****************************************************************************
**
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#include <QtGui>
#include "mainwindow.h"
MainWindow::MainWindow()
{
audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
mediaObject = new Phonon::MediaObject(this);
metaInformationResolver = new Phonon::MediaObject(this);
mediaObject->setTickInterval(1000);
connect(mediaObject, SIGNAL(tick(qint64)), this, SLOT(tick(qint64)));
connect(mediaObject, SIGNAL(stateChanged(Phonon::State,Phonon::State)),
this, SLOT(stateChanged(Phonon::State,Phonon::State)));
connect(metaInformationResolver, SIGNAL(stateChanged(Phonon::State,Phonon::State)),
this, SLOT(metaStateChanged(Phonon::State,Phonon::State)));
connect(mediaObject, SIGNAL(currentSourceChanged(Phonon::MediaSource)),
this, SLOT(sourceChanged(Phonon::MediaSource)));
connect(mediaObject, SIGNAL(aboutToFinish()), this, SLOT(aboutToFinish()));
Phonon::createPath(mediaObject, audioOutput);
setupActions();
setupMenus();
setupUi();
timeLcd->display("00:00");
}
void MainWindow::addFiles()
{
QStringList files = QFileDialog::getOpenFileNames(this, tr("Select Music Files"),
QDesktopServices::storageLocation(QDesktopServices::MusicLocation));
if (files.isEmpty())
return;
int index = sources.size();
foreach (QString string, files) {
Phonon::MediaSource source(string);
sources.append(source);
}
if (!sources.isEmpty())
metaInformationResolver->setCurrentSource(sources.at(index));
}
void MainWindow::about()
{
QMessageBox::information(this, tr("About Music Player"),
tr("The Music Player example shows how to use Phonon - the multimedia"
" framework that comes with Qt - to create a simple music player."));
}
void MainWindow::stateChanged(Phonon::State newState, Phonon::State <span class="comment">/* oldState */</span>)
{
switch (newState) {
case Phonon::ErrorState:
if (mediaObject->errorType() == Phonon::FatalError) {
QMessageBox::warning(this, tr("Fatal Error"),
mediaObject->errorString());
} else {
QMessageBox::warning(this, tr("Error"),
mediaObject->errorString());
}
break;
case Phonon::PlayingState:
playAction->setEnabled(false);
pauseAction->setEnabled(true);
stopAction->setEnabled(true);
break;
case Phonon::StoppedState:
stopAction->setEnabled(false);
playAction->setEnabled(true);
pauseAction->setEnabled(false);
timeLcd->display("00:00");
break;
case Phonon::PausedState:
pauseAction->setEnabled(false);
stopAction->setEnabled(true);
playAction->setEnabled(true);
break;
case Phonon::BufferingState:
break;
default:
;
}
}
void MainWindow::tick(qint64 time)
{
QTime displayTime(0, (time / 60000) % 60, (time / 1000) % 60);
timeLcd->display(displayTime.toString("mm:ss"));
}
void MainWindow::tableClicked(int row, int <span class="comment">/* column */</span>)
{
bool wasPlaying = mediaObject->state() == Phonon::PlayingState;
mediaObject->stop();
mediaObject->clearQueue();
if (row >= sources.size())
return;
mediaObject->setCurrentSource(sources[row]);
if (wasPlaying)
mediaObject->play();
else
mediaObject->stop();
}
void MainWindow::sourceChanged(const Phonon::MediaSource &source)
{
musicTable->selectRow(sources.indexOf(source));
timeLcd->display("00:00");
}
void MainWindow::metaStateChanged(Phonon::State newState, Phonon::State <span class="comment">/* oldState */</span>)
{
if (newState == Phonon::ErrorState) {
QMessageBox::warning(this, tr("Error opening files"),
metaInformationResolver->errorString());
while (!sources.isEmpty() &&
!(sources.takeLast() == metaInformationResolver->currentSource())) {} <span class="comment">/* loop */</span>;
return;
}
if (newState != Phonon::StoppedState && newState != Phonon::PausedState)
return;
if (metaInformationResolver->currentSource().type() == Phonon::MediaSource::Invalid)
return;
QMap<QString, QString> metaData = metaInformationResolver->metaData();
QString title = metaData.value("TITLE");
if (title == "")
title = metaInformationResolver->currentSource().fileName();
QTableWidgetItem *titleItem = new QTableWidgetItem(title);
titleItem->setFlags(titleItem->flags() ^ Qt::ItemIsEditable);
QTableWidgetItem *artistItem = new QTableWidgetItem(metaData.value("ARTIST"));
artistItem->setFlags(artistItem->flags() ^ Qt::ItemIsEditable);
QTableWidgetItem *albumItem = new QTableWidgetItem(metaData.value("ALBUM"));
albumItem->setFlags(albumItem->flags() ^ Qt::ItemIsEditable);
QTableWidgetItem *yearItem = new QTableWidgetItem(metaData.value("DATE"));
yearItem->setFlags(yearItem->flags() ^ Qt::ItemIsEditable);
int currentRow = musicTable->rowCount();
musicTable->insertRow(currentRow);
musicTable->setItem(currentRow, 0, titleItem);
musicTable->setItem(currentRow, 1, artistItem);
musicTable->setItem(currentRow, 2, albumItem);
musicTable->setItem(currentRow, 3, yearItem);
if (musicTable->selectedItems().isEmpty()) {
musicTable->selectRow(0);
mediaObject->setCurrentSource(metaInformationResolver->currentSource());
}
Phonon::MediaSource source = metaInformationResolver->currentSource();
int index = sources.indexOf(metaInformationResolver->currentSource()) + 1;
if (sources.size() > index) {
metaInformationResolver->setCurrentSource(sources.at(index));
}
else {
musicTable->resizeColumnsToContents();
if (musicTable->columnWidth(0) > 300)
musicTable->setColumnWidth(0, 300);
}
}
void MainWindow::aboutToFinish()
{
int index = sources.indexOf(mediaObject->currentSource()) + 1;
if (sources.size() > index) {
mediaObject->enqueue(sources.at(index));
}
}
void MainWindow::setupActions()
{
playAction = new QAction(style()->standardIcon(QStyle::SP_MediaPlay), tr("Play"), this);
playAction->setShortcut(tr("Crl+P"));
playAction->setDisabled(true);
pauseAction = new QAction(style()->standardIcon(QStyle::SP_MediaPause), tr("Pause"), this);
pauseAction->setShortcut(tr("Ctrl+A"));
pauseAction->setDisabled(true);
stopAction = new QAction(style()->standardIcon(QStyle::SP_MediaStop), tr("Stop"), this);
stopAction->setShortcut(tr("Ctrl+S"));
stopAction->setDisabled(true);
nextAction = new QAction(style()->standardIcon(QStyle::SP_MediaSkipForward), tr("Next"), this);
nextAction->setShortcut(tr("Ctrl+N"));
previousAction = new QAction(style()->standardIcon(QStyle::SP_MediaSkipBackward), tr("Previous"), this);
previousAction->setShortcut(tr("Ctrl+R"));
addFilesAction = new QAction(tr("Add &Files"), this);
addFilesAction->setShortcut(tr("Ctrl+F"));
exitAction = new QAction(tr("E&xit"), this);
exitAction->setShortcuts(QKeySequence::Quit);
aboutAction = new QAction(tr("A&bout"), this);
aboutAction->setShortcut(tr("Ctrl+B"));
aboutQtAction = new QAction(tr("About &Qt"), this);
aboutQtAction->setShortcut(tr("Ctrl+Q"));
connect(playAction, SIGNAL(triggered()), mediaObject, SLOT(play()));
connect(pauseAction, SIGNAL(triggered()), mediaObject, SLOT(pause()) );
connect(stopAction, SIGNAL(triggered()), mediaObject, SLOT(stop()));
connect(addFilesAction, SIGNAL(triggered()), this, SLOT(addFiles()));
connect(exitAction, SIGNAL(triggered()), this, SLOT(close()));
connect(aboutAction, SIGNAL(triggered()), this, SLOT(about()));
connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
}
void MainWindow::setupMenus()
{
QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(addFilesAction);
fileMenu->addSeparator();
fileMenu->addAction(exitAction);
QMenu *aboutMenu = menuBar()->addMenu(tr("&Help"));
aboutMenu->addAction(aboutAction);
aboutMenu->addAction(aboutQtAction);
}
void MainWindow::setupUi()
{
QToolBar *bar = new QToolBar;
bar->addAction(playAction);
bar->addAction(pauseAction);
bar->addAction(stopAction);
seekSlider = new Phonon::SeekSlider(this);
seekSlider->setMediaObject(mediaObject);
volumeSlider = new Phonon::VolumeSlider(this);
volumeSlider->setAudioOutput(audioOutput);
volumeSlider->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
QLabel *volumeLabel = new QLabel;
volumeLabel->setPixmap(QPixmap("images/volume.png"));
QPalette palette;
palette.setBrush(QPalette::Light, Qt::darkGray);
timeLcd = new QLCDNumber;
timeLcd->setPalette(palette);
QStringList headers;
headers << tr("Title") << tr("Artist") << tr("Album") << tr("Year");
musicTable = new QTableWidget(0, 4);
musicTable->setHorizontalHeaderLabels(headers);
musicTable->setSelectionMode(QAbstractItemView::SingleSelection);
musicTable->setSelectionBehavior(QAbstractItemView::SelectRows);
connect(musicTable, SIGNAL(cellPressed(int,int)),
this, SLOT(tableClicked(int,int)));
QHBoxLayout *seekerLayout = new QHBoxLayout;
seekerLayout->addWidget(seekSlider);
seekerLayout->addWidget(timeLcd);
QHBoxLayout *playbackLayout = new QHBoxLayout;
playbackLayout->addWidget(bar);
playbackLayout->addStretch();
playbackLayout->addWidget(volumeLabel);
playbackLayout->addWidget(volumeSlider);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(musicTable);
mainLayout->addLayout(seekerLayout);
mainLayout->addLayout(playbackLayout);
QWidget *widget = new QWidget;
widget->setLayout(mainLayout);
setCentralWidget(widget);
setWindowTitle("Phonon Music Player");
}</pre>
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<td width="40%" align="left">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies)</td>
<td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td>
<td width="40%" align="right"><div align="right">Qt 4.6.3</div></td>
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distrib
>
Mandriva
>
current
>
i586
>
media
>
main-updates
>
by-pkgid
>
8e6051afcdb111a0317a58fb64c2abf5
>
files
>
3233
