详解QT媒体播放器代码案例实现

QT媒体播放器代码案例实现是本文要介绍的内容，主要是来了解并学习QT中关于播放器的应用，本文通过代码来实现QT中播放器的应用，具体内容来看详细代码。

可以全屏，解决布局问题，时间进度可以显示..代码尽量简单,基本***,注需要解码包

如果需要QT基于mplayer媒体播放器:，请参考查看。

MAINWINDOW.cpp  
#include"mainwindow.h"  
#include"ui_mainwindow.h"  
#include  
#include  
#include  
#include  
#include  
#include  
#include  
#include  
#include  
#include  
#include  
#include"QFileDialog"  
#include"qDebug"  
#include"phonon"  
#include"QLabel"  
#include  
#include  
#include  
#include"phonon/VideoWidget"  
#include"QTime"  
#include  
#include  
MainWindow::MainWindow(QWidget*parent):  
QMainWindow(parent),  
ui(newUi::MainWindow)  
{  
ui->setupUi(this);  
ui->widget->installEventFilter(this);  
media=newPhonon::MediaObject;  
//media->setCurrentSource(Phonon::MediaSource("../Puppet.mpg"));  
w1=newQWidget(this);  
w3=newQWidget(this);  
timeLcd=newQLCDNumber(this);  
vwidget=newPhonon::VideoWidget(w1);  
Phonon::createPath(media,vwidget);  
vwidget->setAspectRatio(Phonon::VideoWidget::AspectRatioAuto);  
aOutput=newPhonon::AudioOutput(Phonon::VideoCategory);  
Phonon::createPath(media,aOutput);  
//QLabel*l1=newQLabel(QString::fromLocal8Bit("播放进度:"));  
//QLabel*l2=newQLabel(QString::fromLocal8Bit("音量:"));  
volumeSlider=newPhonon::VolumeSlider;  
volumeSlider->setAudioOutput(aOutput);  
volumeSlider->setSizePolicy(QSizePolicy::Maximum,QSizePolicy::Maximum);  
Phonon::SeekSlider*seekSlider=newPhonon::SeekSlider;  
seekSlider->setMediaObject(media);  
timeLcd->display("00:00");  
QVBoxLayout*vLayout=newQVBoxLayout;  
vLayout->addWidget(vwidget);  
vwidget->resize(1024,768);  
w1->setLayout(vLayout);  
//QHBoxLayout*h1=newQHBoxLayout;  
//h1->addWidget(l1);  
//h1->addWidget(seekSlider);  
//h1->addWidget(timeLcd);  
//QHBoxLayout*h2=newQHBoxLayout;  
//h2->addWidget(l2);  
//h2->addWidget(volumeSlider);  
//h2->addWidget(ui->widget_4);  
//QVBoxLayout*vLayout1=newQVBoxLayout;  
//vLayout1->addLayout(h1);  
//vLayout1->addLayout(h2);  
//w3->setLayout(vLayout1);  
//QHBoxLayout*hLayout1=newQHBoxLayout;  
//hLayout1->addWidget(w3);  
//QVBoxLayout*vLayout3=newQVBoxLayout;  
//vLayout3->addWidget(w1);  
//vLayout3->addLayout(hLayout1);  
//vLayout3->addWidget(ui->widget_4);  
//w2=newQWidget(this);  
//w2->setLayout(vLayout3);  
this->setCentralWidget(w1);  
QDockWidget*shapesDockWidget1=newQDockWidget(QString::fromLocal8Bit("播放进度"));  
shapesDockWidget1->setWidget(seekSlider);  
//shapesDockWidget1->setLayout(h2);  
//shapesDockWidget->setAllowedAreas(Qt::LeftDockWidgetArea  
//|Qt::RightDockWidgetArea);  
addDockWidget(Qt::BottomDockWidgetArea,shapesDockWidget1);  
QDockWidget*shapesDockWidget2=newQDockWidget(QString::fromLocal8Bit("播放时间"));  
shapesDockWidget2->setWidget(timeLcd);  
shapesDockWidget2->setMaximumSize(100,100);  
//shapesDockWidget1->setLayout(h2);  
//shapesDockWidget->setAllowedAreas(Qt::LeftDockWidgetArea  
//|Qt::RightDockWidgetArea);  
addDockWidget(Qt::BottomDockWidgetArea,shapesDockWidget2);  
QDockWidget*shapesDockWidget3=newQDockWidget(QString::fromLocal8Bit("播放界面"));  
shapesDockWidget3->setWidget(ui->widget_4);  
//shapesDockWidget1->setLayout(h2);  
//shapesDockWidget->setAllowedAreas(Qt::LeftDockWidgetArea  
//|Qt::RightDockWidgetArea);  
//addDockWidget(Qt::RightDockWidgetArea,shapesDockWidget3);  
addDockWidget(Qt::BottomDockWidgetArea,shapesDockWidget3);  
QDockWidget*shapesDockWidget=newQDockWidget(QString::fromLocal8Bit("音量"));  
shapesDockWidget->setWidget(volumeSlider);  
//shapesDockWidget->setAllowedAreas(Qt::LeftDockWidgetArea  
//|Qt::RightDockWidgetArea);  
addDockWidget(Qt::BottomDockWidgetArea,shapesDockWidget);  
ui->pushButton_5->setEnabled(false);  
ui->pushButton_7->setEnabled(false);  
//QAction*at=newQAction("退出全屏",vwidget);  
//vwidget->addAction(at);  
//vwidget->setAcceptDrops(true);  
//at->setShortcuts(QList()<   
//connect(at,SIGNAL(triggered()),vwidget,SLOT(exitFullScreen()));  
QAction*at1=newQAction("退出全屏",vwidget);  
vwidget->addAction(at1);  
vwidget->setAcceptDrops(true);  
at1->setShortcuts(QList()<   
connect(at1,SIGNAL(triggered()),vwidget,SLOT(exitFullScreen()));  
connect(media,SIGNAL(tick(qint64)),this,SLOT(tick(qint64)));  
readSettings();  
}  
MainWindow::~MainWindow()  
{  
deleteui;  
}  
voidMainWindow::resizeEvent(QResizeEvent*)  
{  
//QBitmapmaskBitmap(width(),height());  
//maskBitmap.clear();  
 
//QPainterp(&maskBitmap);  
//p.setBrush(Qt::black);  
//p.drawRoundRect(0,0,width(),height(),2,4);  
//p.end();  
 
//setMask(maskBitmap);  
}  
voidMainWindow::mouseMoveEvent(QMouseEvent*event)  
{  
//if(event->buttons()&Qt::LeftButton){  
////move(event->globalPos()-m_dragPosition);  
//move(event->globalPos()-m_dragPosition);  
//event->accept();  
//}  
 
}  
voidMainWindow::mousePressEvent(QMouseEvent*event)  
{  
//if(event->button()==Qt::LeftButton){  
//m_dragPosition=event->globalPos()-frameGeometry().topLeft();  
 
////m_dragPosition=event->globalPos()-frameGeometry().topLeft();  
//////ui->widget->move(m_dragPosition);  
//event->accept();  
//}  
}  
voidMainWindow::on_pushButton_2_clicked()  
{  
this->close();  
}  
voidMainWindow::on_pushButton_3_clicked()  
{  
this->showMinimized();  
}  
boolMainWindow::eventFilter(QObject*obj,QEvent*event)  
{  
if(obj==ui->widget){  
if(event->type()==QEvent::MouseButtonPress){  
QMouseEvent*ev=static_cast(event);  
if(ev->buttons()&Qt::LeftButton)  
{  
m_dragPosition=ev->globalPos()-frameGeometry().topLeft();  
ev->accept();  
}  
returntrue;  
}elseif(event->type()==QEvent::MouseMove){  
QMouseEvent*ev=static_cast(event);  
if(ev->buttons()&Qt::LeftButton){  
//move(event->globalPos()-m_dragPosition);  
move(ev->globalPos()-m_dragPosition);  
ev->accept();  
}  
 
}  
else{  
returnfalse;  
}  
 
}  
elseif(obj==w1)  
{  
if(event->type()==QEvent::MouseButtonPress){  
QMouseEvent*ev=static_cast(event);  
if(ev->buttons()&Qt::LeftButton)  
{  
vwidget=newPhonon::VideoWidget(this);  
vwidget->setAspectRatio(Phonon::VideoWidget::AspectRatioAuto);  
vwidget->exitFullScreen();  
}  
}  
}  
else{  
//passtheeventontotheparentclass  
returnQMainWindow::eventFilter(obj,event);  
}  
returntrue;  
}  
voidMainWindow::on_pushButton_4_clicked()  
{  
QStringfilename=QFileDialog::getOpenFileName(this,QString::fromLocal8Bit("文件类型"),".",
QString::fromLocal8Bit("文问类型(*.*)"));  
qDebug()<   
media->setCurrentSource(Phonon::MediaSource(filename));  
media->play();  
this->setWindowTitle(filename);  
ui->pushButton_5->setEnabled(false);  
ui->pushButton_7->setEnabled(true);  
w1->setFocus();  
//this->ui->label->setText(filename);  
}  
voidMainWindow::on_pushButton_8_clicked()  
{  
QMessageBox::information(this,tr("AboutMdieaPlayer"),  
tr("ID:Jammy0.03"));  
}  
voidMainWindow::on_pushButton_clicked()  
{  
vwidget->enterFullScreen();  
}  
voidMainWindow::on_pushButton_5_clicked()  
{  
media->play();  
ui->pushButton_5->setEnabled(false);  
ui->pushButton_7->setEnabled(true);  
}  
voidMainWindow::on_pushButton_7_clicked()  
{  
media->pause();  
 
ui->pushButton_7->setEnabled(false);  
ui->pushButton_5->setEnabled(true);  
}  
voidMainWindow::on_pushButton_6_clicked()  
{  
//media->setCurrentSource(Phonon::MediaSource(this->ui->label->text()));  
media->stop();  
}  
voidMainWindow::tick(qint64time)  
{  
QTimedisplayTime(0,(time/60000)%60,(time/1000)%60);  
timeLcd->display(displayTime.toString("mm:ss"));  
}  
voidMainWindow::keyPressEvent(QKeyEvent*k)  
{  
if(k->key()==Qt::Key_Space)  
{  
if(ui->pushButton_5->isEnabled()==true)  
{  
media->pause();  
ui->pushButton_5->setEnabled(false);  
ui->pushButton_7->setEnabled(true);  
}  
elseif(ui->pushButton_5->isEnabled()==false)  
{  
media->play();  
ui->pushButton_5->setEnabled(true);  
ui->pushButton_7->setEnabled(false);  
}  
}  
elseif(k->modifiers()==Qt::AltModifier&&k->key()==Qt::Key_Return)  
{  
vwidget->enterFullScreen();  
}  
//elseif(k->modifiers()==Qt::ShiftModifier&&k->key()==Qt::Key_A)  
//{  
//vwidget->enterFullScreen();  
//}  
}  
voidMainWindow::writeSettings()  
{  
QSettingssettings("SoftwareInc.","IconEditor");  
settings.beginGroup("mainWindow");  
settings.setValue("size",size());  
settings.setValue("state",saveState());  
settings.endGroup();  
}  
voidMainWindow::readSettings()  
{  
QSettingssettings("SoftwareInc.","IconEditor");  
settings.beginGroup("mainWindow");  
resize(settings.value("size").toSize());  
restoreState(settings.value("state").toByteArray());  
settings.endGroup();  
}  
voidMainWindow::closeEvent(QCloseEvent*ex)  
{  
inta=QMessageBox::information(NULL,QString::fromLocal8Bit("对话框"),
QString::fromLocal8Bit("是否需要退出"),
QString::fromLocal8Bit("确定"),
QString::fromLocal8Bit("取消"),NULL,0,-1);  
if(a==0)  
{  
writeSettings();  
ex->accept();  
}  
elseif(a==1)  
{  
ex->ignore();  
}  
}  
****************************************************  
MAINWINDOW.H  
#defineMAINWINDOW_H  
#include  
#include  
#include  
#include  
namespaceUi{  
classMainWindow;  
}  
classMainWindow:publicQMainWindow  
{  
Q_OBJECT  
public:  
explicitMainWindow(QWidget*parent=0);  
~MainWindow();  
protected:  
Phonon::MediaObject*media;  
Phonon::VideoWidget*vwidget;  
Phonon::AudioOutput*aOutput;  
Phonon::VolumeSlider*volumeSlider;  
Phonon::SeekSlider*seekSlider;  
private:  
Ui::MainWindow*ui;  
QPointm_dragPosition;  
protected:  
voidresizeEvent(QResizeEvent*event);  
voidmouseMoveEvent(QMouseEvent*event);  
voidmousePressEvent(QMouseEvent*event);  
booleventFilter(QObject*obj,QEvent*ev);  
QWidget*w1;  
QWidget*w2;  
QWidget*w3;  
QLCDNumber*timeLcd;  
privateslots:  
voidon_pushButton_6_clicked();  
voidon_pushButton_7_clicked();  
voidon_pushButton_5_clicked();  
voidon_pushButton_clicked();  
voidon_pushButton_8_clicked();  
voidon_pushButton_4_clicked();  
voidon_pushButton_3_clicked();  
voidon_pushButton_2_clicked();  
voidtick(qint64time);  
voidkeyPressEvent(QKeyEvent*k);  
voidwriteSettings();  
voidreadSettings();  
voidcloseEvent(QCloseEvent*ex);  
};  
#endif//MAINWINDOW_H 

小结：详解QT媒体播放器代码案例实现的内容介绍完了，通过QT中播放器的代码实现内容，希望本篇QT播放器的内容能对你有所帮助！