ffmpeg播放器实战（初始化项目窗口）

Widget::Widget(QWidget*parent)
    : QWidget(parent)
    , ui(newUi::Widget)
{
ui->setupUi(this);
//创建显示类mMyDisplay=newDisplay();
//winId() 是 QWidget 类的一个方法，用于返回窗口的唯一标识符。//这个标识符可以用来与其他应用程序进行交互或者在一些特定情况下进行操作。//你可以通过调用该方法来获取当前窗口的标识符。mMyPlayer=newFPlayer(mMyDisplay->getVideo()->winId());
mThread=newQThread();
mMyPlayer->moveToThread(mThread);
mThread->start();
mMyProgress=newProgress();
//添加显示窗口ui->gridLayout->addWidget(mMyDisplay);
//添加进度条ui->verticalLayout_2->addWidget(mMyProgress);
ui->uPlay->setEnabled(false);
ui->uStop->setEnabled(false);
ui->uSpeed->setText(QString("倍速x%1").arg(mMyPlayer->getPlaySpeed()));
ui->uBackward->setEnabled(false);
ui->uForward->setEnabled(false);
connect(mMyPlayer, &FPlayer::signalProgress, this, &Widget::slotProgress);
connect(mMyPlayer, &FPlayer::signalPLayStop, this, &Widget::slotPlayStop);
connect(ui->uOpen, &QPushButton::clicked, this, &Widget::openClicked);
connect(ui->uPlay, &QPushButton::clicked, this, &Widget::playClicked);
connect(ui->uStop, &QPushButton::clicked, this, &Widget::stopClicked);
connect(ui->uVolume, &QSlider::valueChanged, this, [=](intvalue) {
mMyPlayer->setPlayVolume(value);
    });
connect(ui->uBackward, &QPushButton::clicked, this, [=]() {
mMyPlayer->fastBackward();
    });
connect(ui->uForward, &QPushButton::clicked, this, [=]() {
mMyPlayer->fastForward();
    });
connect(ui->uSpeed, &QPushButton::clicked, this, &Widget::speedClicked);
connect(mMyProgress, &Progress::signalValue, this, [=](intvalue) {
int64_th=value/60/60;
int64_tmin=value/60;
int64_ts=value-min*60;
ui->uPlayProgress->setText(QString("%1:%2:%3").arg(h, 2, 10, QChar('0')).arg(min, 2, 10, QChar('0')).arg(s, 2, 10, QChar('0')));
    });
connect(mMyProgress, &Progress::signalSeekValue, this, [=](intvalue) {
mMyPlayer->seek((longlong)value*1000);
    });
}

//进度voidWidget::slotProgress(longlongtime)
{
//按下if (!mMyProgress->getPressFlag()) {
int64_ttempTime=time/1000;
//小时int64_th=tempTime/60/60;
//分int64_tmin=tempTime/60;
//秒int64_ts=tempTime-min*60;
ui->uPlayProgress->setText(QString("%1:%2:%3").arg(h, 2, 10, QChar('0'))
                                       .arg(min, 2, 10, QChar('0')).arg(s, 2, 10, QChar('0')));
mMyProgress->setSliderValue(tempTime);
    }
}
//暂停播放voidWidget::slotPlayStop()
{
ui->uPlay->setText("播放");
ui->uOpen->setEnabled(true);
ui->uStop->setEnabled(false);
}
voidWidget::openClicked()
{
QStringpath=QFileDialog::getOpenFileName(this, "", "", "*.mp4 *.avi *.flv");
if (mMyPlayer->open(path)) {
intwidth=0;
intheight=0;
mMyPlayer->getVideoSize(width, height);
mMyDisplay->setNewSize(width, height);
int64_ttempTime=mMyPlayer->getLength() /1000;
int64_th=tempTime/60/60;
int64_tmin=tempTime/60;
int64_ts=tempTime-min*60;
ui->uPlayLength->setText(QString("%1:%2:%3").arg(h, 2, 10, QChar('0')).arg(min, 2, 10, QChar('0')).arg(s, 2, 10, QChar('0')));
mMyProgress->setSliderLength(tempTime);
ui->uPlay->setEnabled(true);
ui->uBackward->setEnabled(true);
ui->uForward->setEnabled(true);
    }
}
voidWidget::playClicked()
{
if (ui->uPlay->text() =="播放") {
if (!mMyPlayer->play()) {
return;
        }
ui->uOpen->setEnabled(false);
ui->uPlay->setText("暂停");
    } else {
mMyPlayer->pause();
ui->uPlay->setText("播放");
    }
ui->uStop->setEnabled(true);
}
voidWidget::stopClicked()
{
mMyPlayer->stop();
ui->uPlay->setText("播放");
ui->uStop->setEnabled(false);
}
voidWidget::speedClicked()
{
if (mMyPlayer->getPlaySpeed() ==PLAY_SLOW) {
mMyPlayer->setPlaySpeed(PLAY_NORMAL);
    } elseif (mMyPlayer->getPlaySpeed() ==PLAY_NORMAL) {
mMyPlayer->setPlaySpeed(PLAY_FAST2);
    } elseif (mMyPlayer->getPlaySpeed() ==PLAY_FAST2) {
mMyPlayer->setPlaySpeed(PLAY_FAST4);
    } elseif (mMyPlayer->getPlaySpeed() ==PLAY_FAST4) {
mMyPlayer->setPlaySpeed(PLAY_SLOW);
    }
floatspeed= (mMyPlayer->getPlaySpeed() ==PLAY_SLOW) ?0.5 : mMyPlayer->getPlaySpeed();
ui->uSpeed->setText(QString("倍速x%1").arg(speed));
}