qt实现一个简单的播放器
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ui界面设计如下：
2、代码结构
3、dialog.cpp
#include "dialog.h" #include "ui_dialog.h" #include<QStringList> #include<QDebug> Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog) { ui->setupUi(this); ui->lb_dis->installEventFilter(this); pro = new QProcess(); tp = new QTimer(); tp1 = new QTimer(); flag =0; flag1 =0; music = "libai.avi"; i=1; fullflag = 0; musiclist[0]= "libai.avi"; musiclist[1] = "kjwcbz.avi"; // connect(pro,SIGNAL(readyReadStandardOutput()),this,SLOT(gettime())); connect(tp,SIGNAL(timeout()),this,SLOT(gettime())); connect(tp1,SIGNAL(timeout()),this,SLOT(changimage())); connect(pro,SIGNAL(finished(int)),this,SLOT(getmusic())); // connect(ui->horizontalSlider,SIGNAL(valueChanged(int)),this,SLOT(setlineeditvalue(int))); tp1->start(2000); } Dialog::~Dialog() { delete ui; } void Dialog::on_bt_play_clicked() //click play { QStringList cmd_list; //pro->write("quit\n"); tp->start(100); cmd_list<<"/mnt/hgfs/shared/qt/qmyplay/player/"+music; cmd_list<<"-wid"; cmd_list<< QString::number(ui->lb_dis->winId()); cmd_list<<"-slave"; cmd_list<<"-quiet"; pro->start("mplayer",cmd_list); } void Dialog::on_bt_pause_clicked() //click pause { switch (flag) { case 1: { pro->write("pause\n"); tp->start(100); flag=0; break; } case 0: { pro->write("pause\n"); tp->stop(); flag++; break; } //qDebug()<<"pause"; } } void Dialog::gettime() //get current and time length { // pro->write("pause\n"); pro->write("get_time_pos\n"); pro->write("get_time_length\n"); while(pro->canReadLine()) { QString timeinfo = pro->readLine(); QString timeend = pro->readLine(); // qDebug()<<timeinfo; //qDebug()<<timeend; s = timeinfo.section(".",-2,-2); s1 = timeend.section(".",-2,-2); s = s.section("=",-1,-1); s1 = s1.section("=",-1,-1); // qDebug()<<"info"<<s; // qDebug()<<"end"<<s1; // qDebug()<<s; int a1,a2,b1,b2; a1 = s.toInt()%60;//geiwei a2 = s.toInt()/60;//shiwei QString ss,ss1,ss2,ss3; ss.setNum(a1); ss1.setNum(a2); b1 = s1.toInt()%60;//geiwei b2 = s1.toInt()/60;//shiwei ss2.setNum(b1); ss3.setNum(b2); // ui->horizontalSlider->setMinimumSize(0); ui->horizontalSlider->setMaximum(s1.toInt()); ui->horizontalSlider->setValue(s.toInt()); ui->lb_current_time_2->setText("00:"+ss3+":"+ss2); ui->lb_current_time->setText("00:"+ss1+":"+ss); } } void Dialog::on_bt_input_clicked() //input music { QDir dir("/mnt/hgfs/shared/qt/qmyplay/player"); QStringList filelist; filelist<<"*.avi"<<"*.mp3"; QStringList filename = dir.entryList(filelist); //if(ui->listWidget->currentItem()==NULL) ui->listWidget->addItems(filename); } void Dialog::on_bt_input_2_clicked() //delete music { delete ui->listWidget->currentItem(); } void Dialog::on_bt_speed_clicked()//speed ++ { pro->write("seek +5 "); } void Dialog::on_bt_speed_2_clicked()//speed -- { pro->write("seek -5"); } void Dialog::sendmsg() { } void Dialog::on_horizontalSlider_sliderMoved(int position)//position { tp->stop(); pro->write("pause\n"); //ui->horizontalSlider->setValue(position); QString tmp; tmp.setNum(position); s=tmp; // qDebug()<<tmp; QString posi ="seek " +tmp+" 2"; pro->write(posi.toLatin1()); qDebug()<<posi.toLatin1(); tp->start(100); pro->write("pause"); //qDebug()<<position<<"position"; } /*void Dialog::on_listWidget_Clicked(const QModelIndex &index) { music = ui->listWidget->currentItem()->text(); pro->write("quit\n"); QStringList cmd_list; tp->start(100); cmd_list<<"/mnt/hgfs/shared/qt/qmyplay/player/"+music; cmd_list<<"-wid"; cmd_list<< QString::number(ui->lb_dis->winId()); cmd_list<<"-slave"; cmd_list<<"-quiet"; pro->start("mplayer",cmd_list); } */ /*void Dialog::on_horizontalSlider_sliderPressed() { QString tmp; tmp.setNum(ui->horizontalSlider->value()); qDebug()<<tmp; QString posi ="seek" +tmp+" 2"; pro->write(posi.toLatin1()); }*/ void Dialog::on_listWidget_clicked(const QModelIndex &index) { music = ui->listWidget->currentItem()->text(); pro->write("quit\n"); on_bt_play_clicked(); //pro->start(); //pro->write("quit\n"); } void Dialog::on_bt_speed_3_clicked()//volume ++ { pro->write("volume +5"); } void Dialog::on_bt_speed_4_clicked()//volume -- { pro->write("volume -5"); } void Dialog::changimage() //change image { //this->resize(715, 423); switch (flag1) { case 0: this->setStyleSheet(QStringLiteral("QDialog{border-image: url(:/new/prefix1/player/t01185f568f2f064f39.jpg);}")); flag1++; break; case 1: this->setStyleSheet(QStringLiteral("QDialog{border-image: url(:/new/prefix1/player/t01c952a08ad7577d58.jpg);}")); flag1++; break; case 2: this->setStyleSheet(QStringLiteral("QDialog{border-image: url(:/new/prefix1/player/t01f4b009b55efffa08.jpg);}")); flag1 = 0; break; } } void Dialog::setlineeditvalue(int value) //set line value { int pos = ui->horizontalSlider->value(); QString tmp; tmp.setNum(pos); qDebug()<<tmp; QString posi ="seek" +tmp+" 2"; pro->write(posi.toLatin1()); //ui->horizontalSlider->setValue(pos); //qDebug()<<ui->horizontalSlider->value(); //toInt } void Dialog::getmusic() //recycle play { // pro->close(); switch(i) {case 1: music = musiclist[1]; i =0; break; case 0: music = musiclist[0]; i++; break; } qDebug()<<"end"; qDebug()<<music; // on_bt_play_clicked(); on_bt_play_clicked(); //pro->start(); qDebug()<<"end"; } void Dialog::on_bt_full_clicked() //full screen button { switch (fullflag) { case 0: //this->setWindowState(Qt::Dialog); this->setWindowFlags(Qt::Dialog); this->showFullScreen(); fullflag++; break; case 1: //this->setWindowFlags(Qt::SubWindow); this->showNormal(); fullflag=0; break; } // qDebug()<<"fi;;"; } void Dialog::on_bt_prev_clicked() //prev play { if(music == "libai.avi") music = musiclist[1]; pro->write("quit\n"); on_bt_play_clicked(); } void Dialog::on_bt_next_clicked() //next play { if(music == "libai.avi") music = musiclist[1]; pro->write("quit\n"); on_bt_play_clicked(); } bool Dialog::eventFilter(QObject *obj, QEvent *evt) //mouse double click and click { if(obj==ui->lb_dis) { if(evt->type()==QEvent::MouseButtonDblClick) { switch (fullflag) { case 0: //this->setWindowState(Qt::Dialog); this->setWindowFlags(Qt::Dialog); this->showFullScreen(); fullflag++; break; case 1: //this->setWindowFlags(Qt::SubWindow); this->showNormal(); fullflag=0; break; } } if(evt->type() == QEvent::MouseButtonRelease) { switch (flag) { case 1: { pro->write("pause\n"); tp->start(100); flag=0; break; } case 0: { pro->write("pause\n"); tp->stop(); flag++; break; } } } } }
4、main.cpp
#include "dialog.h" #include <QApplication> int main(int argc, char *argv[]) { QApplication a(argc, argv); Dialog w; w.show(); return a.exec(); }
dialog.h
1 #ifndef DIALOG_H 2 #define DIALOG_H 3 4 #include <QDialog> 5 #include<QStringList> 6 #include<QProcess> 7 #include <QScrollBar> 8 #include<QAbstractSlider> 9 #include<QTimer> 10 #include<QDir> 11 namespace Ui { 12 class Dialog; 13 } 14 15 class Dialog : public QDialog 16 { 17 Q_OBJECT 18 19 public: 20 explicit Dialog(QWidget *parent = 0); 21 ~Dialog(); 22 bool eventFilter(QObject *obj, QEvent *evt); 23 24 private slots: 25 void on_bt_play_clicked(); 26 void gettime(); 27 void on_bt_pause_clicked(); 28 void sendmsg(); 29 void on_bt_input_clicked(); 30 31 void on_bt_input_2_clicked(); 32 33 void on_bt_speed_clicked(); 34 35 void on_bt_speed_2_clicked(); 36 37 //void on_horizontalSlider_sliderMoved(int position); 38 39 void on_horizontalSlider_sliderMoved(int position); 40 41 //void on_horizontalSlider_valueChanged(int value); 42 43 // void on_listWidget_Clicked(const QModelIndex &index); 44 45 //void on_horizontalSlider_sliderPressed(); 46 47 void on_listWidget_clicked(const QModelIndex &index); 48 49 void on_bt_speed_3_clicked(); 50 void getmusic(); 51 void on_bt_speed_4_clicked(); 52 void changimage(); 53 void setlineeditvalue(int); 54 void on_bt_full_clicked(); 55 56 void on_bt_prev_clicked(); 57 58 void on_bt_next_clicked(); 59 60 private: 61 Ui::Dialog *ui; 62 QProcess *pro; 63 QAbstractSlider *asp; 64 QTimer *tp,*tp1; 65 QString s,s1,music; 66 int flag,flag1,i,fullflag; 67 QString musiclist[5]; 68 69 }; 70 71 #endif // DIALOG_H
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