Qt屏幕共享软件，把当前电脑屏幕指定区域分享至其他电脑

#include "widget.h" #include "ui_widget.h" #include <QApplication> #include <QDesktopWidget> #include <QBuffer> #include <QTime> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); GetScreen(); LoadConfig(); this->setWindowFlags(Qt::FramelessWindowHint); this->setWindowOpacity(Opacity); //band = new QRubberBand(QRubberBand::Rectangle,this); traylcon = new QSystemTrayIcon(QIcon(tr("1.ico")),this); menu = new QMenu(this); ahide = new QAction(tr("隐藏窗口"),this); ashow = new QAction(tr("显示窗口"),this); aexit = new QAction(tr("退出"),this); redraw = new QAction(tr("重绘区域"),this); menu->addAction(ahide); menu->addAction(ashow); menu->addAction(redraw); menu->addAction(aexit); connect(ashow,SIGNAL(triggered()),this,SLOT(show())); connect(ahide,SIGNAL(triggered()),this,SLOT(hide())); connect(aexit,SIGNAL(triggered(bool)),this,SLOT(close())); connect(redraw,SIGNAL(triggered(bool)),this,SLOT(Repaint())); traylcon->setContextMenu(menu); traylcon->show(); atimer = new QTimer; connect(atimer,SIGNAL(timeout()),this,SLOT(SendScreen())); atimer->setSingleShot(true); udpsend = new QUdpSocket; // pen.setWidth(3); // pen.setColor(Qt::red); // pix=QPixmap(1440,900); } Widget::~Widget() { delete ui; } void Widget::LoadConfig() { QSettings setini("config.ini",QSettings::IniFormat); FPIP=setini.value("SET/FPIP").toString(); Opacity=setini.value("SET/opacity",0.2).toFloat(); Interval=setini.value("SET/interval",100).toInt(); quality=setini.value("SET/quality",-1).toInt(); } void Widget::GetScreen() { QList<QScreen*> scrlst; scrlst=QGuiApplication::screens(); QRect zhu=scrlst[0]->geometry(); this->setGeometry(zhu); ui->widget->setGeometry(zhu); } void Widget::Delay(int msec) { QTime dieTime = QTime::currentTime().addMSecs(msec); while( QTime::currentTime() < dieTime ) QCoreApplication::processEvents(QEventLoop::AllEvents, 100); } void Widget::SendScreen() { pix=QPixmap::grabWindow(QApplication::desktop()->winId(),pStart.x(),pStart.y(),pEnd.x()-pStart.x(),pEnd.y()-pStart.y()); QByteArray picdata; QBuffer picbuf(&picdata); picbuf.open(QIODevice::WriteOnly); pix.save(&picbuf,"jpg",quality); while (picdata.size()>65500) { QByteArray temp; temp.resize(65500); temp=picdata.mid(0,65500); picdata.remove(0,65500); udpsend->writeDatagram(temp.data(),temp.size(),QHostAddress(FPIP),8083); Delay(50); } udpsend->writeDatagram(picdata.data(),picdata.size(),QHostAddress(FPIP),8083); atimer->start(Interval); } void Widget::Repaint() { if(!dia->isHidden()) dia->close(); atimer->stop(); GetScreen(); show(); lock=false; } void Widget::HideAndStart() { dia->close(); this->hide(); atimer->start(Interval); } void Widget::ShowAndStart() { dia->close(); atimer->start(Interval); } void Widget::mousePressEvent(QMouseEvent *event) { if(event->button()==Qt::LeftButton) { if(!lock) pStart=event->pos(); // isDrawing=true; } } //void Widget::mouseMoveEvent(QMouseEvent *event) //{ // if(event->buttons()&Qt::LeftButton) // { // pEnd=event->pos(); // update(); // } //} void Widget::mouseReleaseEvent(QMouseEvent *event) { if(event->button()==Qt::LeftButton) { if(!lock) { pEnd=event->pos(); int w=pEnd.x()-pStart.x(); int h=pEnd.y()-pStart.y(); // band = new QRubberBand(QRubberBand::Rectangle,this); // band->setGeometry(pStart.x(),pStart.y(),w,h); // band->show(); this->setGeometry(pStart.x(),pStart.y(),w,h); ui->widget->setGeometry(this->rect()); lock=true; dia = new HideOrRe; connect(dia,SIGNAL(hidewindow()),this,SLOT(HideAndStart())); connect(dia,SIGNAL(showwindow()),this,SLOT(ShowAndStart())); connect(dia,SIGNAL(redrwarect()),this,SLOT(Repaint())); dia->move(pEnd.x(),pStart.y()); dia->show(); // isDrawing=false; // atimer->start(Interval); } } } //void Widget::paintEvent(QPaintEvent *event) //{ // Q_UNUSED(event); // int x,y,w,h; // x=pStart.x(); // y=pStart.y(); // w=pEnd.x()-x; // h=pEnd.y()-y; // QPainter painter(this); // if(isDrawing) // { // temp=pix; // QPainter pp(&temp); // pp.setPen(pen); // pp.drawRect(x,y,w,h); // painter.drawPixmap(0,0,temp); // } //}