基于Linux qt的车载移动预警系统客户端

#include "mainwindow.h" #include "ui_mainwindow.h" #include <about.h> #include <qmessagebox.h> #include <qpixmap.h> #include <QTime> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); //初始化定时器，连接定时函数 currentTimer = new QTimer(); currentTimer->setInterval(1000); currentTimer->start(); connect(currentTimer, SIGNAL(timeout()), this, SLOT(setCurrentTime())); //主界面钟表实现 connect(currentTimer, SIGNAL(timeout()), this, SLOT(checkDrivingStatus())); //初始化UDP连接 udpSocket = new QUdpSocket(this); port = 4421; udpSocket->bind(port, QUdpSocket::ShareAddress | QUdpSocket::ReuseAddressHint); //连接UDP接受数据的信号和槽 connect(udpSocket,SIGNAL(readyRead()),this,SLOT(processPendingDatagrams())); //初始化警示标志对 signPic["1001"]="禁止超车"; signPic["1002"]="禁止掉头"; signPic["1003"]="禁止非机动车通行"; signPic["1004"]="禁止机动车通行"; signPic["1005"]="禁止鸣笛"; signPic["1006"]="禁止驶入"; signPic["1007"]="禁止通行"; signPic["1008"]="禁止右转"; signPic["1009"]="禁止直行"; signPic["1010"]="禁止左转"; signPic["1011"]="限速40"; signPic["2001"]="无人看守铁道路口"; signPic["2002"]="易滑"; signPic["2003"]="注意儿童"; signPic["2004"]="注意行人"; signPic["2005"]="注意落石"; signPic["2006"]="注意危险"; //初始化路况标志对 sStatus["1001"]="通畅"; sStatus["1002"]="平稳"; sStatus["1003"]="普通"; sStatus["1004"]="拥堵"; sStatus["1005"]="颠簸"; sStatus["1006"]="车祸"; sStatus["1007"]="沙尘"; sStatus["1008"]="断路"; sStatus["1009"]="地震"; sStatus["1010"]="海啸"; sStatus["1011"]="恐怖袭击"; sStatus["1012"]="世界末日"; } MainWindow::~MainWindow() { delete ui; } //发送UDP包 void MainWindow::sendPackage(QString package) { QByteArray data; QDataStream out(&data,QIODevice::WriteOnly); out << package; udpSocket->writeDatagram(data,data.length(),QHostAddress::Broadcast, port); } //设置当前系统时间 void MainWindow::setCurrentTime() { QString str; QDate date = QDate::currentDate(); QTime time = QTime::currentTime(); str = QString("%1-%2-%3 %4").arg(date.year()).arg(date.month()).arg(date.day()).arg(time.toString()); currentTime = str; ui->lTime->setText(currentTime); } //设置警示标志牌 void MainWindow::setSign(QString streetID, QString direction, QString sign) { if(!(streetID == ui->lesStreetID->text() && direction == ui->lesDirection->text())) return; QString path = ":/img/"; QString info = ""; QMap<QString,QString>::iterator it; for(it = signPic.begin(); it != signPic.end(); it++) { if(it.key() == sign) { path.append(it.value()); info.append(it.value()); path.append(".png"); ui->lesSign->setText(it.key()); break; } } QPixmap pix; pix.load(path); ui->picSign->setPixmap(pix); ui->picSign->show(); ui->tbSignInfo->setText(info); } //检查当前用户行驶状态 void MainWindow::checkDriving(QString speed, QString sign, QString sstatus) { ui->tbDriving->clear(); ui->tbDriving->append("当前行驶速度："+speed+"公里/时。"); bool overSpeed = false; if(sign == "1011" && (speed.toFloat()>40.0)) { ui->tbDriving->append("您正在超速行驶！"); overSpeed = true; } else if(speed.toFloat() > 120) ui->tbDriving->append("您是不是开得太快了？"); else ui->tbDriving->append("正常行驶中。"); generateRecommend(overSpeed, sstatus); } //生成驾驶意见 void MainWindow::generateRecommend(bool overSpeed, QString sstatus) { ui->tbDRecommend->clear(); if(overSpeed) ui->tbDRecommend->append("您正在超速行驶，请减速。"); if(sstatus == "1001") ui->tbDRecommend->append("道路通畅，驾驶安全。"); else if(sstatus == "1002") ui->tbDRecommend->append("道路平稳，驾驶安全。"); else if(sstatus == "1003") ui->tbDRecommend->append("道路正常，请放心驾驶。"); else if(sstatus == "1004") ui->tbDRecommend->append("道路拥堵，请耐性慢行。"); else if(sstatus == "1005") ui->tbDRecommend->append("道路颠簸，请注意驾驶安全。"); else if(sstatus == "1006") ui->tbDRecommend->append("附近发生道路车祸，请适当减速绕行。"); else if(sstatus == "1007") ui->tbDRecommend->append("附近道路发生沙尘，请小心驾驶。"); else if(sstatus == "1008") ui->tbDRecommend->append("前方公路断裂，最好掉头。"); else if(sstatus == "1009") ui->tbDRecommend->append("附近发生地震，请做好防护。"); else if(sstatus == "1010") ui->tbDRecommend->append("附近发生海啸，请迅速逃离。"); else if(sstatus == "1011") ui->tbDRecommend->append("附近发生恐怖袭击，请躲好。"); else if(sstatus == "1012") ui->tbDRecommend->append("世界末日来临，去死吧！哈哈哈哈！！！"); else ui->tbDRecommend->append("这是一种未知的状态。。。");; } //检查道路拥堵情况 void MainWindow::checkJam(QString streetID, QString direction, QString speed) { if(!(streetID == ui->lesStreetID->text() && direction == ui->lesDirection->text())) return; if(speed.toFloat() < 10) ui->tbJam->setText("当前道路十分拥堵！"); else if(speed.toFloat() < 20) ui->tbJam->setText("当前道路比较拥堵！"); else if(speed.toFloat() < 40) ui->tbJam->setText("当前道路开始拥堵！"); else if(speed.toFloat() < 60) ui->tbJam->setText("当前道路通畅！"); else if(speed.toFloat() < 80) ui->tbJam->setText("您在市内快速上！"); else if(speed.toFloat() < 100) ui->tbJam->setText("您正在高速路上！"); else ui->tbJam->setText("您可以在这里开飞机了！"); } //检查撞车情况 void MainWindow::checkCrash(QString longti, QString lati, QString direction, QString speed) { float myLongti = ui->lesLongti->text().toFloat(); float myLati = ui->lesLati->text().toFloat(); float myDir = ui->lesDirection->text().toFloat(); float mySpeed = ui->lesSpeed->text().toFloat(); float relLongti = (longti.toFloat()>myLongti)?(longti.toFloat()-myLongti):(myLongti-longti.toFloat()); float relLati = (lati.toFloat()>myLati)?(lati.toFloat()-myLati):(myLati-lati.toFloat()); float relativeV = 0; if((relLongti<0.01) && (relLati<0.01)) { if(direction.toFloat() != myDir) relativeV = speed.toFloat() + mySpeed; else relativeV = speed.toFloat()>mySpeed?(speed.toFloat()-mySpeed):(mySpeed-speed.toFloat()); if(relativeV <10) ui->tbCrash->setText("附近车辆速度正常，撞车几率很小，请正常驾驶。"); else ui->tbCrash->setText("附近有高速车辆，请注意避免撞车的发生。"); } else ui->tbCrash->setText("附近车辆很少，无撞车风险。"); } //检查是否发生事故 void MainWindow::checkAccident(QString streetID, QString sstatus) { if(!(streetID == ui->lesStreetID->text())) return; QMap<QString,QString>::iterator it; bool acci = false; for(it = sStatus.begin(); it != sStatus.end(); it++) { if(it.key() == sstatus) { ui->tbAccident->setText("附近道路状况："+it.value()+"。"); acci = true; ui->lesSStatus->setText(it.key()); break; } } if(!acci) { ui->tbAccident->setText("附近一切正常。"); } } //每秒钟