/**************************************************************************** ** ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 Nokia Corporation 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 #include "mainwindow.h" //![0] MainWindow::MainWindow() { audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this); mediaObject = new Phonon::MediaObject(this); metaInformationResolver = new Phonon::MediaObject(this); mediaObject->setTickInterval(1000); //![0] //![2] 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())); //![2] //![1] Phonon::createPath(mediaObject, audioOutput); //![1] setupActions(); setupMenus(); setupUi(); timeLcd->display("00:00"); } //![6] 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)); } //![6] 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.")); } //![9] void MainWindow::stateChanged(Phonon::State newState, Phonon::State /* oldState */) { 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; //![9] //![10] 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; //![10] case Phonon::BufferingState: break; default: ; } } //![11] void MainWindow::tick(qint64 time) { QTime displayTime(0, (time / 60000) % 60, (time / 1000) % 60); timeLcd->display(displayTime.toString("mm:ss")); } //![11] //![12] void MainWindow::tableClicked(int row, int /* column */) { 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(); } //![12] //![13] void MainWindow::sourceChanged(const Phonon::MediaSource &source) { musicTable->selectRow(sources.indexOf(source)); timeLcd->display("00:00"); } //![13] //![14] void MainWindow::metaStateChanged(Phonon::State newState, Phonon::State /* oldState */) { if (newState == Phonon::ErrorState) { QMessageBox::warning(this, tr("Error opening files"), metaInformationResolver->errorString()); while (!sources.isEmpty() && !(sources.takeLast() == metaInformationResolver->currentSource())) {} /* loop */; return; } if (newState != Phonon::StoppedState && newState != Phonon::PausedState) return; if (metaInformationResolver->currentSource().type() == Phonon::MediaSource::Invalid) return; QMap 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); //![14] 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); //![15] 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); } } //![15] //![16] void MainWindow::aboutToFinish() { int index = sources.indexOf(mediaObject->currentSource()) + 1; if (sources.size() > index) { mediaObject->enqueue(sources.at(index)); } } //![16] void MainWindow::setupActions() { playAction = new QAction(style()->standardIcon(QStyle::SP_MediaPlay), tr("Play"), this); playAction->setShortcut(tr("Ctrl+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")); //![5] connect(playAction, SIGNAL(triggered()), mediaObject, SLOT(play())); connect(pauseAction, SIGNAL(triggered()), mediaObject, SLOT(pause()) ); connect(stopAction, SIGNAL(triggered()), mediaObject, SLOT(stop())); //![5] 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); } //![3] void MainWindow::setupUi() { //![3] QToolBar *bar = new QToolBar; bar->addAction(playAction); bar->addAction(pauseAction); bar->addAction(stopAction); //![4] seekSlider = new Phonon::SeekSlider(this); seekSlider->setMediaObject(mediaObject); volumeSlider = new Phonon::VolumeSlider(this); volumeSlider->setAudioOutput(audioOutput); //![4] 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"); }