QT music play音乐播放器源码

#include "mainwindow.h" #include "ui_mainwindow.h" #include<QList> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); a=true; maxnum=-1; player = new QMediaPlayer; slider=new QSlider(); ui->volumeSlider->setValue(player->volume()); this->setWindowTitle("梁氏播放器"); this->setWindowIcon(QIcon(":/new/prefix1/H:/图标/311/ico 16/Music.ico")); ui->openbutton->setStyleSheet("QPushButton{border-image:url(:/new/prefix2/pause2.png);font: 75 12pt 方正稚艺简体}" "QPushButton:pressed{border-image:url(:/new/prefix2/未标题-3.png);}"); ui->adddirButton->setStyleSheet("QPushButton{border-image:url(:/new/prefix2/pause2.png);font: 75 12pt 方正稚艺简体}" "QPushButton:pressed{border-image:url(:/new/prefix2/未标题-3.png);}"); ui->playandpause->setStyleSheet("QPushButton{border-image:url(:/new/prefix3/按钮图片/pause1.png);}" "QPushButton:pressed{border-image:url(:/new/prefix3/按钮图片/pause1.png);}"); ui->pushButton_3->setStyleSheet("QPushButton{border-image:url(:/new/prefix3/按钮图片/next1.png);}" "QPushButton:pressed{border-image:url(:/new/prefix3/按钮图片/next2.png);}"); ui->pushButton->setStyleSheet("QPushButton{border-image:url(:/new/prefix3/按钮图片/shang.png);}" "QPushButton:pressed{border-image:url(:/new/prefix3/按钮图片/shang2.png);}"); ui->sytlebutton->setStyleSheet("QPushButton{border-image:url(:/new/prefix2/next2.png);font: 75 12pt Webdings;color: rgb(255, 255, 255);}" "QPushButton:pressed{border-image:url(:/new/prefix2/未标题-3.png);}"); ui->pushButton_4->setStyleSheet("QPushButton{border-image:url(:/new/prefix2/next2.png);color: rgb(255, 255, 255);}" "QPushButton:pressed{border-image:url(:/new/prefix2/未标题-3.png);}"); ui->pushButton_2->setStyleSheet("QPushButton{border-image:url(:/new/prefix2/next2.png);font: 100 14pt Aharoni;color: rgb(255, 255, 255);}" "QPushButton:pressed{border-image:url(:/new/prefix2/未标题-3.png);}"); connect(player,SIGNAL(positionChanged(qint64)), this, SLOT(qmpPlaying(qint64))); connect(player,SIGNAL(durationChanged(qint64)),this,SLOT(qmpDuration(qint64))); connect(ui->listWidget,SIGNAL(itemDoubleClicked(QListWidgetItem*)),this,SLOT(tem(QListWidgetItem*))); connect(ui->openbutton,SIGNAL(clicked()),this,SLOT(open())); connect(ui->adddirButton,SIGNAL(clicked()),this,SLOT(adddir())); connect(ui->sytlebutton,SIGNAL(clicked()),this,SLOT(setbrtsty())); } MainWindow::~MainWindow() { delete ui; } //可以利用按钮的窗口化实现音量的调节 //---------------------------------添加歌曲文件夹-------------------------------- void MainWindow::adddir() { QString dirname=QFileDialog::getExistingDirectory(this,"open","H:"); QDir qd(dirname); qd.setFilter(QDir::Files|QDir::Hidden|QDir::NoSymLinks); qd.setSorting(QDir::Size|QDir::Reversed); QFileInfoList list = qd.entryInfoList(); for(int i=0;i< list.size();++i) { if(list.at(i).fileName().right(3) == "mp3") { songlst += dirname + "/" + list.at(i).fileName(); maxnum+=1; name+=list.at(i).fileName(); ui->listWidget->addItem(list.at(i).fileName()); } } } //-----------------添加歌曲，可以添加一首，也可以很多------------------------------------------------------------ void MainWindow::open() { QString dir,fname; QStringList danname; QStringList filename=QFileDialog::getOpenFileNames(this,"Open","H:/KuGou","Sounds Files (*.mp3)"); if(!filename.isEmpty()) { for(int i=0;i<filename.size();i++) { QUrl url(filename.at(i)); danname+=url.fileName(); } songlst+=filename; maxnum +=filename.size(); ui->listWidget->addItems(danname); } } //------------------------------------------------------------------------------------ void MainWindow::on_volumeSlider_actionTriggered()//音量获取调节 { player->setVolume(ui->volumeSlider->value()); } //-----------------------------暂停播放区域---------------------------------------- void MainWindow::playclicked() { player->play(); ui->playandpause->setStyleSheet("QPushButton{border-image:url(:/new/prefix3/按钮图片/pause1.png);}" "QPushButton:pressed{border-image:url(:/new/prefix3/按钮图片/pause2.png);}"); } void MainWindow::pauseclicked() { player->pause(); ui->playandpause->setStyleSheet("QPushButton{border-image:url(:/new/prefix3/按钮图片/play1.png);}" "QPushButton:pressed{border-image:url(:/new/prefix3/按钮图片/play2.png);}"); } void MainWindow::on_playandpause_clicked() { if(a) { a=!connect(ui->playandpause,SIGNAL(clicked(bool)),this,SLOT(pauseclicked())); }else { a=connect(ui->playandpause,SIGNAL(clicked(bool)),this,SLOT(playclicked())); } } //-----------------------播放进度-------------------------------------------- void MainWindow::qmpPlaying(qint64 position) { QTime duration(0, position / 60000, qRound((position % 60000) / 1000.0)); ui->label->setText(duration.toString("mm:ss")); QTime maxtime(0, player->duration() / 60000, qRound((player->duration() % 60000) / 1000.0)); QTime null(0,0,0); if(position == player->duration() & maxtime!=null) { on_pushButton_3_clicked(); } ui->horizontalSlider->setSliderPosition(position); } void MainWindow::qmpDuration(qint64 pos) { ui->horizontalSlider->setRange(0,pos); } void MainWindow::on_horizontalSlider_sliderMoved(int position) { player->setPosition(position); } //------------------------------------------------------------------------------------- void MainWindow::tem(QListWidgetItem *a1)//双击列表播放歌曲的槽 { int x=ui->listWidget->row(a1); playnum=x; player->setMedia(QMediaContent(QUrl(songlst.at(x)))); player->play(); a=!connect(ui->playandpause,SIGNAL(clicked(bool)),this,SLOT(pauseclicked())); ui->label_2->setText(a1->text()); } //---------------下一曲--------------------------------------------------------------- void MainWindow::on_pushButton_3_clicked() { if(maxnum>0) { if(maxnum==playnum) { playnum=0; ui->listWidget->setCurrentRow(playnum); ui->label_2->setText(ui->listWidget->item(playnum)->text()); player->setMedia(QMediaContent(QUrl(songlst.at(playnum)))); player->play(); } else { playnum=playnum+1; ui->listWidget->setCurrentRow(playnum); ui->label_2->setText(ui->listWidget->item(playnum)->text()); player->setMedia(QMediaContent(QUrl(songlst.at(playnum)))); player->play(); } } } //-----------------------------上一曲---------------------------------------------- void MainWindow::on_pushButton_clicked() { if(maxnum>0) { if(playnum==0) { playnum=maxnum; ui->listWidget->setCurrentRow(playnum); ui->label_2->setText(ui->listWidget->item(playnum)->text()); player->setMedia(QMediaContent(QUrl(songlst.at(playnum)))); player->play(); }else { playnum=playnum-1; ui->listWidget->setCurrentRow(playnum); ui->label_2->setText(ui->listWidget->item(playnum)->text()); player->setMedia(QMediaContent(QUrl(songlst.at(playnum)))); player->play(); } } } //------------------------------关闭