20210311基于QT的录屏软件系统的设计与实现.rar

#include "form.h" #include "ui_form.h" #include <QPainter> #include <QFileDialog> #include <QApplication> #include <QScreen> #include <QResizeEvent> #include <QDateTime> #include <QMessageBox> #include <QTime> #include <QDebug> #include <QProcess> #include <QTimer> #include <QInputDialog> Form::Form(QWidget *parent) : QWidget(parent), ui(new Ui::Form) { mStartResize =false; ui->setupUi(this); setWindowFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint); // this->sizePolicy(); this->setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Preferred); connect(ui->quit, SIGNAL(clicked()), qApp, SLOT(quit())); poc = new QProcess(this); ui->pause->setEnabled(false); ui->stop->setEnabled(false); timer.setInterval(50); timer.start(50); connect(&timer,SIGNAL(timeout()),this,SLOT(showtime())); } Form::~Form() { delete ui; } void Form::paintEvent(QPaintEvent *event) { QPainter painter(this); painter.fillRect(rect(), Qt::red); } void Form::resizeEvent(QResizeEvent *event) { QRect rect = this->rect(); rect.adjust(3, 3, -3, -(ui->start->height()+ 5)); mRecordRect = rect; QRegion region(this->rect()); setMask(region.xored(mRecordRect)); // ui->widget->move(width() - ui->widget->width() - 3, height() - ui->widget->height() - 3); } void Form::mousePressEvent(QMouseEvent *event) { QRect rect(QPoint(width() - 5, height() - 5), QSize(5, 5)); if (rect.contains(event->pos()) ) { mStartResize = true; mStartGeometry = QRect(event->globalPos(), size()); setCursor(Qt::SizeFDiagCursor); } else { if (event->button() == Qt::LeftButton) { mbLeftMousePressed = true; moLastPos = event->globalPos(); } } } void Form::mouseReleaseEvent(QMouseEvent *event) { mStartResize = false; setCursor(Qt::ArrowCursor); if (event->button() == Qt::LeftButton) { mbLeftMousePressed = false; moLastPos = event->globalPos(); } } void Form::mouseMoveEvent(QMouseEvent *event) { QRect rect(QPoint(width() - 5, height() - 5), QSize(5, 5)); if (rect.contains(event->pos()) ) { // mStartResize = true; // mStartGeometry = QRect(event->globalPos(), size()); setCursor(Qt::SizeFDiagCursor); } else { setCursor(Qt::ArrowCursor); } if (mStartResize) { setCursor(Qt::SizeFDiagCursor); QPoint ch = event->globalPos() - mStartGeometry.topLeft(); resize(mStartGeometry.size() + QSize(ch.x(), ch.y())); } else if (mbLeftMousePressed) { QPoint lastpos = pos(); lastpos.setX( lastpos.x() + event->globalX() - moLastPos.x()); lastpos.setY( lastpos.y() + event->globalY() - moLastPos.y()); move(lastpos); moLastPos = event->globalPos(); } } void Form::on_start_clicked() { starttime = QTime::currentTime(); lasttime = starttime; totalseconds =0; ui->pause->setEnabled(true); ui->stop->setEnabled(true); ui->start->setEnabled(false); filename = QDateTime::currentDateTime().toString("MM_dd_hh_mm_ss"); QString command = QString("ffmpeg -f gdigrab -i desktop -f dshow -i audio=\"virtual-audio-capturer\" -vcodec libx264 -acodec libmp3lame -video_size 600x480 -offset_x 100 -offset_y 60 -r %1 temp/%2.avi").arg(framrate) .arg(filename); poc->setProcessChannelMode(QProcess::MergedChannels); // poc->startDetached(command); poc->start(command); qDebug()<<command; ui->pause->setText("暂停"); } void Form::on_pause_clicked() { if(ui->pause->text() == "暂停") { ui->pause->setText("继续"); timer.stop(); // lasttime = QTime::currentTime(); totalseconds +=lasttime.secsTo(QTime::currentTime()); } else { ui->pause->setText("暂停"); lasttime = QTime::currentTime(); timer.start(50); } } void Form::on_stop_clicked() { ui->start->setEnabled(true); ui->pause->setText("暂停"); ui->pause->setEnabled(false); ui->stop->setEnabled(false); QTimer::singleShot(15000,this,SLOT(realstop())); } void Form::realstop() { poc->kill(); // QProcess *poc = new QProcess(this); QTimer::singleShot(2000,this,SLOT(cut())); } void Form::cut() { QString command = QString("ffmpeg -i temp/%1.avi -vf crop=%2:%3:%4:%5 new%6.avi -y").arg(filename).arg(this->rect().width()-6).arg(this->rect().height()-ui->start->height()-5-5).arg(pos().x()+3).arg(pos().y()+3).arg(filename); poc->start(command); qDebug()<<command; QTimer::singleShot(5000,this,SLOT(removefile())); // ffmpeg -ss 0 -i input.mp4 -t 10 -c:v copy -c:a copy output.mp4 } void Form::removefile() { // QFile file(QString("%1.avi").arg(filename)); // file.remove(); QFile::remove(QString("temp/%1.avi").arg(filename)); } void Form::on_configue_clicked() { bool ok; int i = QInputDialog::getInt(this, tr("QInputDialog::getInteger()"), tr("设置帧率:"), 15, 0, 30, 1, &ok); if (ok) framrate = i; } void Form::showtime() { int num = lasttime.secsTo(QTime::currentTime()) +totalseconds; QTime tt;tt.setHMS(0,num/60,num%60); if(!ui->start->isEnabled()&&ui->pause->text()=="暂停") { // totalseconds = lasttime.secsTo(QTime::currentTime()) + totalseconds; QTime tt;tt.setHMS(0,num/60,num%60); ui->time->setText( tt.toString("hh:mm:ss") ); } } void Form::on_play_clicked() { QProcess * p = new QProcess(this); QString str = QString("ffplay new%1.avi").arg(filename); p->start(str); }