- /qt/musicplayer/main.cpp
- #include <QtGui/QApplication>
- #include "widget.h"
- int main(int argc, char *argv[])
- {
- QApplication a(argc, argv);
- a.setApplicationName("musicplayer");
- Widget w;
- w.show();
- return a.exec();
- }
- /qt/musicplayer/widget.h
- #ifndef WIDGET_H
- #define WIDGET_H
- #include <QWidget>
- #include <QVBoxLayout>
- #include <QHBoxLayout>
- #include <QLabel>
- #include <QToolButton>
- #include <Phonon/VideoPlayer>
- #include <Phonon/MediaSource>
- #include <QTimeLine>
- class Widget : public QWidget
- {
- Q_OBJECT
- public:
- Widget(QWidget *parent = 0);
- ~Widget();
- void createUi();
- private slots:
- void prev();
- void next();
- void pause();
- void play();
- void setTimeLabel(int s);
- private:
- QVBoxLayout *layout;
- QLabel *nameLabel;
- QLabel *timeLabel;
- QHBoxLayout *buttonLayout;
- QToolButton *backwardButton;
- QToolButton *playButton;
- QToolButton *pauseButton;
- QToolButton *forwardButton;
- void loadDir();
- void loadSong(QString& s);
- void togglePlayPause();
- const QString PlayDir;
- bool isPaused;
- Phonon::VideoPlayer *player;
- QTimeLine *timeLine;
- QStringList songs;
- int totalSongs;
- int songId;
- int prevSongId;
- };
- #endif // WIDGET_H
- /qt/musicplayer/widget.cpp
- #include "widget.h"
- #include <QStringList>
- #include <QDir>
- #include <ctime>
- Widget::Widget(QWidget *parent)
- : QWidget(parent), PlayDir("d:\\music\"), isPaused(false),
- songId(0), prevSongId(0)
- {
- qsrand((uint) time(0));
- createUi();
- connect(playButton, SIGNAL(clicked()), this, SLOT(play()));
- connect(pauseButton, SIGNAL(clicked()), this, SLOT(pause()));
- connect(backwardButton, SIGNAL(clicked()), this, SLOT(prev()));
- connect(forwardButton, SIGNAL(clicked()), this, SLOT(next()));
- player = new Phonon::VideoPlayer(Phonon::MusicCategory, parent);
- timeLine = new QTimeLine(1000000, parent);
- timeLine->setCurveShape(QTimeLine::LinearCurve);
- timeLine->setFrameRange(0, 1000000);
- connect(timeLine, SIGNAL(frameChanged(int)), this, SLOT(setTimeLabel(int)));
- loadDir();
- if (!totalSongs)
- {
- playButton->setEnabled(false);
- pauseButton->setEnabled(false);
- backwardButton->setEnabled(false);
- forwardButton->setEnabled(false);
- }
- else
- {
- songId = qrand() % totalSongs;
- play();
- connect(player, SIGNAL(finished()), this, SLOT(next()));
- }
- }
- Widget::~Widget()
- {
- }
- void Widget::loadDir()
- {
- QDir dir(PlayDir);
- QStringList filters;
- filters << "*.mp3";
- songs = dir.entryList(filters, QDir::Files);
- totalSongs = songs.count();
- }
- void Widget::loadSong(QString& s)
- {
- player->load(Phonon::MediaSource(PlayDir + s));
- nameLabel->setText(s.left(s.size() - 4));
- timeLine->stop();
- }
- void Widget::togglePlayPause()
- {
- playButton->setHidden(!isPaused);
- pauseButton->setHidden(isPaused);
- }
- void Widget::setTimeLabel(int s)
- {
- int s1 = player->currentTime() / 1000;
- int s2 = player->totalTime() / 1000;
- int m1 = s1 / 60;
- int m2 = s2 / 60;
- timeLabel->setText(tr("%1:%2 / %3:%4").arg(m1).arg(s1 % 60).arg(m2).arg(s2 % 60));
- }
- void Widget::play()
- {
- if (!isPaused)
- loadSong(songs[songId]);
- if (timeLine->state() == QTimeLine::Paused)
- timeLine->resume();
- else
- timeLine->start();
- isPaused = false;
- togglePlayPause();
- player->play();
- }
- void Widget::pause()
- {
- timeLine->setPaused(true);
- isPaused = true;
- togglePlayPause();
- player->pause();
- }
- void Widget::next()
- {
- prevSongId = songId;
- songId = qrand() % totalSongs;
- isPaused = false;
- play();
- }
- void Widget::prev()
- {
- songId = prevSongId;
- prevSongId = 0;
- isPaused = false;
- play();
- }
- void Widget::createUi()
- {
- resize(300, 100);
- setMinimumSize(QSize(300, 100));
- setMaximumSize(QSize(300, 100));
- layout = new QVBoxLayout;
- layout->setSpacing(6);
- layout->setContentsMargins(11, 11, 11, 11);
- nameLabel = new QLabel;
- QFont nameFont;
- nameFont.setPointSize(10);
- nameLabel->setFont(nameFont);
- layout->addWidget(nameLabel);
- timeLabel = new QLabel;
- QFont timeFont;
- timeFont.setPointSize(9);
- timeLabel->setFont(timeFont);
- layout->addWidget(timeLabel);
- buttonLayout = new QHBoxLayout();
- buttonLayout->setSpacing(6);
- backwardButton = new QToolButton;
- playButton = new QToolButton;
- pauseButton = new QToolButton;
- forwardButton = new QToolButton;
- backwardButton->setIcon(QIcon(QString(":/icon/backward.png")));
- playButton->setIcon(QIcon(QString(":/icon/play.png")));
- pauseButton->setIcon(QIcon(QString(":/icon/pause.png")));
- forwardButton->setIcon(QIcon(QString(":/icon/forward.png")));
- buttonLayout->addWidget(backwardButton);
- buttonLayout->addWidget(playButton);
- buttonLayout->addWidget(pauseButton);
- buttonLayout->addWidget(forwardButton);
- pauseButton->setHidden(true);
- buttonLayout->addStretch();
- layout->addLayout(buttonLayout);
- layout->addStretch();
- setLayout(layout);
- setWindowIcon(QIcon(QString(":/icon/play.png")));
- setWindowTitle(tr("musicplayer"));
- }
|
木有吧。。呵呵~