// 初始化播放器
void MyWidget::initPlayer()
{
// 设置主界面标题、图标和大小
setWindowTitle(tr("MyPlayer音乐播放器"));
setWindowIcon(QIcon(":/images/icon.png"));
setMinimumSize(320, 160);
setMaximumSize(320, 160);
// 创建媒体图
mediaObject = new Phonon::MediaObject(this);
Phonon::AudioOutput *audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
Phonon::createPath(mediaObject, audioOutput);
// 关联媒体对象的tick()信号来更新播放时间的显示
connect(mediaObject, SIGNAL(tick(qint64)), this, SLOT(updateTime(qint64)));
// 创建顶部标签，用于显示一些信息
topLabel = new QLabel(tr("<a href = \" http://www.yafeilinux.com \"> www.yafeilinux.com </a>"));
topLabel->setTextFormat(Qt::RichText);
topLabel->setOpenExternalLinks(true);
topLabel->setAlignment(Qt::AlignCenter);
// 创建控制播放进度的滑块
Phonon::SeekSlider *seekSlider = new Phonon::SeekSlider(mediaObject, this);
// 创建包含播放列表图标、显示时间标签和桌面歌词图标的工具栏
QToolBar *widgetBar = new QToolBar(this);
// 显示播放时间的标签
timeLabel = new QLabel(tr("00:00 / 00:00"), this);
timeLabel->setToolTip(tr("当前时间 / 总时间"));
timeLabel->setAlignment(Qt::AlignCenter);
timeLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
// 创建图标，用于控制是否显示播放列表
QAction *PLAction = new QAction(tr("PL"), this);
PLAction->setShortcut(QKeySequence("F4"));
PLAction->setToolTip(tr("播放列表(F4)"));
connect(PLAction, SIGNAL(triggered()), this, SLOT(setPlaylistShown()));
// 创建图标，用于控制是否显示桌面歌词
QAction *LRCAction = new QAction(tr("LRC"), this);
LRCAction->setShortcut(QKeySequence("F2"));
LRCAction->setToolTip(tr("桌面歌词(F2)"));
connect(LRCAction, SIGNAL(triggered()), this, SLOT(setLrcShown()));
// 添加到工具栏
widgetBar->addAction(PLAction);
widgetBar->addSeparator();
widgetBar->addWidget(timeLabel);
widgetBar->addSeparator();
widgetBar->addAction(LRCAction);
// 创建播放控制动作工具栏
QToolBar *toolBar = new QToolBar(this);
// 播放动作
playAction = new QAction(this);
playAction->setIcon(QIcon(":/images/play.png"));
playAction->setText(tr("播放(F5)"));
playAction->setShortcut(QKeySequence(tr("F5")));
connect(playAction, SIGNAL(triggered()), this, SLOT(setPaused()));
// 停止动作
stopAction = new QAction(this);
stopAction->setIcon(QIcon(":/images/stop.png"));
stopAction->setText(tr("停止(F6)"));
stopAction->setShortcut(QKeySequence(tr("F6")));
connect(stopAction, SIGNAL(triggered()), mediaObject, SLOT(stop()));
// 跳转到上一首动作
skipBackwardAction = new QAction(this);
skipBackwardAction->setIcon(QIcon(":/images/skipBackward.png"));
skipBackwardAction->setText(tr("上一首(Ctrl+Left)"));
skipBackwardAction->setShortcut(QKeySequence(tr("Ctrl+Left")));
connect(skipBackwardAction, SIGNAL(triggered()), this, SLOT(skipBackward()));
// 跳转到下一首动作
skipForwardAction = new QAction(this);
skipForwardAction->setIcon(QIcon(":/images/skipForward.png"));
skipForwardAction->setText(tr("下一首(Ctrl+Right)"));
skipForwardAction->setShortcut(QKeySequence(tr("Ctrl+Right")));
connect(skipForwardAction, SIGNAL(triggered()), this, SLOT(skipForward()));
// 打开文件动作
QAction *openAction = new QAction(this);
openAction->setIcon(QIcon(":/images/open.png"));
openAction->setText(tr("播放文件(Ctrl+O)"));
openAction->setShortcut(QKeySequence(tr("Ctrl+O")));
connect(openAction, SIGNAL(triggered()), this, SLOT(openFile()));
// 音量控制部件
Phonon::VolumeSlider *volumeSlider = new Phonon::VolumeSlider(audioOutput, this);
volumeSlider->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
// 添加到工具栏
toolBar->addAction(playAction);
toolBar->addSeparator();
toolBar->addAction(stopAction);
toolBar->addSeparator();
toolBar->addAction(skipBackwardAction);
toolBar->addSeparator();
toolBar->addAction(skipForwardAction);
toolBar->addSeparator();
toolBar->addWidget(volumeSlider);
toolBar->addSeparator();
toolBar->addAction(openAction);
// 创建主界面布局管理器
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(topLabel);
mainLayout->addWidget(seekSlider);
mainLayout->addWidget(widgetBar);
mainLayout->addWidget(toolBar);
setLayout(mainLayout);
// 在3-2中添加的代码
connect(mediaObject, SIGNAL(stateChanged(Phonon::State, Phonon::State)),
this, SLOT(stateChanged(Phonon::State, Phonon::State)));
// 以下是在3-3中添加的代码
// 创建播放列表
playlist = new MyPlaylist(this);
connect(playlist, SIGNAL(cellClicked(int, int)), this, SLOT(tableClicked(int)));
connect(playlist, SIGNAL(playlistClean()), this, SLOT(clearSources()));
// 创建用来解析媒体的信息的元信息解析器
metaInformationResolver = new Phonon::MediaObject(this);
// 需要与AudioOutput连接后才能使用metaInformationResolver来获取歌曲的总时间
Phonon::AudioOutput *metaInformationAudioOutput =
new Phonon::AudioOutput(Phonon::MusicCategory, this);
Phonon::createPath(metaInformationResolver, metaInformationAudioOutput);
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()));
// 初始化动作图标的状态
playAction->setEnabled(false);
stopAction->setEnabled(false);
skipBackwardAction->setEnabled(false);
skipForwardAction->setEnabled(false);
topLabel->setFocus();
}
Player::Player(QWidget *parent) : KXmlGuiWindow(parent) {
//SETUP DATABASE
QDir(KGlobal::dirs()->saveLocation("data")).mkdir("projekt7"); //NOTE: creates the projekt7 directory if it doesn't already exist
QString db_path = KGlobal::dirs()->saveLocation("data") + "projekt7/tracks_db";
int return_code = sqlite3_open(qtos(db_path), &tracks_db);
if (return_code) {
showError("Failed to open the Projekt7 Track Database: ", sqlite3_errmsg(tracks_db));
exit(return_code);
}
const char *create_table = "CREATE TABLE IF NOT EXISTS `tracks` (`tid` INTEGER PRIMARY KEY, `artist` VARCHAR KEY ASC, `year` INT KEY ASC, `album` VARCHAR, `track_number` INT KEY ASC, `title` VARCHAR, `path` VARCHAR, `length` INT, `playcount` INT)"; //TODO make use of the `length` and `playcount` columns
char *errmsg;
return_code = sqlite3_exec(tracks_db, create_table, 0, 0, &errmsg);
if (return_code) {
showError("Failed to create `tracks` table: ", errmsg);
sqlite3_free(errmsg);
exit(return_code);
}
updateNumTracks();
//SETUP PHONON
now_playing = new Phonon::MediaObject(this);
Phonon::AudioOutput *audioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
createPath(now_playing, audioOutput);
now_playing->setTickInterval(1000);
//SETUP WIDGETS
QWidget *central_widget = new QWidget(this);
KToolBar *toolbar_widget = new KToolBar(i18n("Main Toolbar"), central_widget);
toolbar_widget->setIconDimensions(32);
playlist_widget = new QWidget(central_widget);
artist_list = new KListWidget(playlist_widget);
artist_list->addItem(ALL);
album_list = new KListWidget(playlist_widget);
titles_list = new KListWidget(playlist_widget);
QAction* tb_previousAction = toolbar_widget->addAction(KIcon("media-skip-backward"), "");
QString previousHelpText = i18n("Play the previous track");
tb_previousAction->setToolTip(previousHelpText);
QAction* tb_pauseAction = toolbar_widget->addAction(KIcon("media-playback-pause"), "");
QString plauseHelpText = i18n("Plause playback");
tb_pauseAction->setToolTip(plauseHelpText);
QAction* tb_playAction = toolbar_widget->addAction(KIcon("media-playback-start"), "");
QString playHelpText = i18n("Play the track");
tb_playAction->setToolTip(playHelpText);
QAction* tb_nextAction = toolbar_widget->addAction(KIcon("media-skip-forward"), "");
QString nextHelpText = i18n("Play the next track");
tb_nextAction->setToolTip(nextHelpText);
toolbar_widget->addSeparator();
Phonon::VolumeSlider *volumeSlider = new Phonon::VolumeSlider;
volumeSlider->setAudioOutput(audioOutput);
volumeSlider->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
toolbar_widget->addWidget(volumeSlider);
toolbar_widget->addSeparator();
Phonon::SeekSlider *seekSlider = new Phonon::SeekSlider(now_playing);
volumeSlider->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
toolbar_widget->addWidget(seekSlider);
toolbar_widget->addSeparator();
cur_time = new QLabel(" 0:00", toolbar_widget);
cur_time->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
toolbar_widget->addWidget(cur_time);
toolbar_widget->addWidget(new QLabel(" / ", toolbar_widget));
track_duration = new QLabel("0:00", toolbar_widget);
track_duration->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
toolbar_widget->addWidget(track_duration);
queued = new KIcon("go-next-view");
QHBoxLayout *listLayout = new QHBoxLayout;
listLayout->addWidget(artist_list);
listLayout->addWidget(album_list);
listLayout->addWidget(titles_list);
playlist_widget->setLayout(listLayout);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(toolbar_widget);
mainLayout->addWidget(playlist_widget);
central_widget->setLayout(mainLayout);
setCentralWidget(central_widget);
//SETUP STATUS BAR
KStatusBar* bar = statusBar();
bar->insertPermanentItem("", SONG_NAME, true);
bar->setItemAlignment(SONG_NAME, Qt::AlignLeft | Qt::AlignVCenter);
//SETUP SYSTEM TRAY ICON
tray_icon = new KSystemTrayIcon("projekt7", this);
tray_icon->show();
//SETUP METADATA WINDOW
metadata_window = new QWidget(this, Qt::Dialog);
metadata_window->setWindowModality(Qt::WindowModal);
metadata_window->setWindowTitle("Track Details | Projekt 7");
mw_ok_button = new KPushButton(KIcon("dialog-ok-apply"), "OK", metadata_window);
mw_ok_button->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
QGridLayout *mwLayout = new QGridLayout;
mwLayout->addWidget(new QLabel("Artist:", metadata_window), 0, 0);
mwLayout->addWidget(new QLabel("Year:", metadata_window), 1, 0);
mwLayout->addWidget(new QLabel("Album:", metadata_window), 2, 0);
mwLayout->addWidget(new QLabel("Track Number:", metadata_window), 3, 0);
mwLayout->addWidget(new QLabel("Title:", metadata_window), 4, 0);
mwLayout->addWidget(new QLabel("File Path:", metadata_window), 5, 0);
mwLayout->addWidget(mw_artist = new QLabel(metadata_window), 0, 1);
mwLayout->addWidget(mw_year = new QLabel(metadata_window), 1, 1);
mwLayout->addWidget(mw_album = new QLabel(metadata_window), 2, 1);
mwLayout->addWidget(mw_track_number = new QLabel(metadata_window), 3, 1);
mwLayout->addWidget(mw_title = new QLabel(metadata_window), 4, 1);
mwLayout->addWidget(mw_path = new QLabel(metadata_window), 5, 1);
mwLayout->addWidget(mw_ok_button, 6, 0, 1, 2, Qt::AlignCenter);
metadata_window->setLayout(mwLayout);
//SETUP QUEUE EDITOR WINDOW
queue_window = new QWidget(this, Qt::Dialog);
queue_window->setWindowModality(Qt::WindowModal);
queue_window->setWindowTitle("Track Queue Editor | Projekt 7");
qw_ok_button = new KPushButton(KIcon("dialog-ok-apply"), "OK", queue_window);
qw_ok_button->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
QVBoxLayout *qw_buttons_layout = new QVBoxLayout;
KPushButton *qw_top_button = new KPushButton(KIcon("go-top"), "", queue_window);
KPushButton *qw_up_button = new KPushButton(KIcon("go-up"), "", queue_window);
KPushButton *qw_down_button = new KPushButton(KIcon("go-down"), "", queue_window);
KPushButton *qw_bottom_button = new KPushButton(KIcon("go-bottom"), "", queue_window);
KPushButton *qw_remove_button = new KPushButton(KIcon("edit-delete"), "", queue_window);
qw_buttons_layout->addWidget(qw_top_button);
qw_buttons_layout->addWidget(qw_up_button);
qw_buttons_layout->addWidget(qw_down_button);
qw_buttons_layout->addWidget(qw_bottom_button);
qw_buttons_layout->addWidget(qw_remove_button);
QHBoxLayout *qw_list_buttons_layout = new QHBoxLayout;
qw_queue_list = new KListWidget(queue_window);
QWidget *qw_button_holder = new QWidget(queue_window);
qw_button_holder->setLayout(qw_buttons_layout);
qw_list_buttons_layout->addWidget(qw_queue_list);
qw_list_buttons_layout->addWidget(qw_button_holder);
QVBoxLayout *qwLayout = new QVBoxLayout;
QWidget *qw_list_buttons = new QWidget(queue_window);
qw_list_buttons->setLayout(qw_list_buttons_layout);
qwLayout->addWidget(qw_list_buttons);
qwLayout->addWidget(qw_ok_button, 0, Qt::AlignCenter);
queue_window->setLayout(qwLayout);
//SETUP ACTIONS
KStandardAction::quit(kapp, SLOT(quit()), actionCollection());
connect(kapp, SIGNAL(aboutToQuit()), this, SLOT(quit()));
connect(now_playing, SIGNAL(aboutToFinish()), this, SLOT(enqueueNext()));
connect(now_playing, SIGNAL(totalTimeChanged(qint64)), this, SLOT(updateDuration(qint64)));
connect(now_playing, SIGNAL(tick(qint64)), this, SLOT(tick(qint64)));
KAction *openFilesAction = setupKAction("document-open", i18n("Open"), i18n("Load the selected files"), "files");
openFilesAction->setShortcut(QKeySequence::Open);
connect(openFilesAction, SIGNAL(triggered(bool)), this, SLOT(loadFiles()));
KAction *openDirectoryAction = setupKAction("document-open-folder", i18n("Open Directory..."), i18n("Load all files in the selected directory and its subdirectories"), "directory");
openDirectoryAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_D));
connect(openDirectoryAction, SIGNAL(triggered(bool)), this, SLOT(loadDirectory()));
KAction *previousAction = setupKAction("media-skip-backward", i18n("Previous"), previousHelpText, "previous");
previousAction->setShortcut(QKeySequence(Qt::Key_Z));
connect(previousAction, SIGNAL(triggered(bool)), this, SLOT(previous()));
connect(tb_previousAction, SIGNAL(triggered(bool)), this, SLOT(previous()));
KAction *pauseAction = setupKAction("media-playback-pause", i18n("Pause"), plauseHelpText, "pause");
pauseAction->setShortcut(QKeySequence(Qt::Key_C));
connect(pauseAction, SIGNAL(triggered(bool)), this, SLOT(pause()));
connect(tb_pauseAction, SIGNAL(triggered(bool)), this, SLOT(pause()));
KAction *playAction = setupKAction("media-playback-start", i18n("Play"), playHelpText, "play");
playAction->setShortcut(QKeySequence(Qt::Key_X));
connect(playAction, SIGNAL(triggered(bool)), this, SLOT(play()));
connect(tb_playAction, SIGNAL(triggered(bool)), this, SLOT(play()));
KAction *nextAction = setupKAction("media-skip-forward", i18n("Next"), nextHelpText, "next");
nextAction->setShortcut(QKeySequence(Qt::Key_V));
connect(nextAction, SIGNAL(triggered(bool)), this, SLOT(next()));
connect(tb_nextAction, SIGNAL(triggered(bool)), this, SLOT(next()));
KAction *queueAction = setupKAction("go-next-view", i18n("Queue Track"), "Enqueue the current track", "queue");
queueAction->setShortcut(QKeySequence(Qt::Key_Q));
connect(queueAction, SIGNAL(triggered(bool)), this, SLOT(queue()));
shuffleAction = setupKAction("media-playlist-shuffle", i18n("Suffle"), "The next track will be random when checked", "shuffle");
shuffleAction->setCheckable(true);
connect(shuffleAction, SIGNAL(triggered(bool)), this, SLOT(shuffle(bool)));
KAction *viewCurrentTrackAction = setupKAction("go-last", i18n("Current Track"), i18n("Show the Current Track in the Playlist"), "current_track");
connect(viewCurrentTrackAction, SIGNAL(triggered(bool)), this, SLOT(viewCurrentTrack()));
KAction *viewTrackDetailsAction = setupKAction("view-media-lyrics", i18n("Track Details"), i18n("View the playing track's metadata"), "track_details");
connect(viewTrackDetailsAction, SIGNAL(triggered(bool)), this, SLOT(viewTrackDetails()));
KAction *viewTrackQueueAction = setupKAction("view-time-schedule-edit", i18n("Track Queue"), i18n("Edit the track queue"), "track_queue");
connect(viewTrackQueueAction, SIGNAL(triggered(bool)), this, SLOT(viewTrackQueue()));
viewPlaylistAction = setupKAction("view-file-columns", i18n("Playlist"), i18n("Show/Hide the playlist"), "playlist");
viewPlaylistAction->setCheckable(true);
connect(viewPlaylistAction, SIGNAL(triggered(bool)), this, SLOT(viewPlaylist(bool)));
connect(artist_list, SIGNAL(currentItemChanged(QListWidgetItem *, QListWidgetItem *)), this, SLOT(updateAlbumList(QListWidgetItem *, QListWidgetItem *)));
connect(album_list, SIGNAL(currentItemChanged(QListWidgetItem *, QListWidgetItem *)), this, SLOT(updateTitlesList(QListWidgetItem *, QListWidgetItem *)));
connect(titles_list, SIGNAL(currentItemChanged(QListWidgetItem *, QListWidgetItem *)), this, SLOT(showTrackInfo(QListWidgetItem *, QListWidgetItem *)));
connect(titles_list, SIGNAL(itemDoubleClicked(QListWidgetItem *)), this, SLOT(play(QListWidgetItem *)));
connect(mw_ok_button, SIGNAL(clicked()), this, SLOT(hideTrackDetails()));
connect(qw_top_button, SIGNAL(clicked()), this, SLOT(moveQueuedTrackToTop()));
connect(qw_up_button, SIGNAL(clicked()), this, SLOT(moveQueuedTrackUp()));
connect(qw_down_button, SIGNAL(clicked()), this, SLOT(moveQueuedTrackDown()));
connect(qw_bottom_button, SIGNAL(clicked()), this, SLOT(moveQueuedTrackToBottom()));
connect(qw_remove_button, SIGNAL(clicked()), this, SLOT(dequeueTrack()));
connect(qw_ok_button, SIGNAL(clicked()), this, SLOT(hideTrackQueue()));
//SETUP GUI
qsrand(QDateTime::currentDateTime().toTime_t());
setupGUI(Default, "projekt7ui.rc");
updateArtistList(0);
//READ CONFIG
config = KGlobal::config();
KConfigGroup curTrackDetails(config, "curTrackDetails");
cur_artist = artist_list->item(curTrackDetails.readEntry("artist", QString()).toInt());
cur_album = curTrackDetails.readEntry("album", QString()).toInt();
cur_title = curTrackDetails.readEntry("title", QString()).toInt();
KConfigGroup applicationSettings(config, "applicationSettings");
viewPlaylistAction->setChecked(applicationSettings.readEntry("playlistVisible", QString()).toInt());
shuffle_tracks = applicationSettings.readEntry("shuffleTracks", QString()).toInt();
shuffleAction->setChecked(shuffle_tracks);
viewCurrentTrack();
if (titles_list->count() > 0) {
if (titles_list->currentRow() == -1)
titles_list->setCurrentRow(0);
play(titles_list->currentItem()->data(Qt::UserRole).toInt(), false, false);
pause();
quint64 song_position = curTrackDetails.readEntry("tick", QString()).toLongLong();
now_playing->seek(song_position);
tick(song_position);
//TODO update the seekSlider's position to match the "tick" location of the song
}
}