qt调用百度地图与js通信源码

#include "testwebmap.h" #include "ui_testwebmap.h" #include <QDebug> #include <QFileInfo> #include <QWebFrame> #include <QMessageBox> testWebMap::testWebMap(QWidget *parent) : QMainWindow(parent), ui(new Ui::testWebMap) { ui->setupUi(this); QFileInfo xmlinfo("./test.html"); connect(ui->webView->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()), this, SLOT(addObjectToJs())); ui->webView->load(QUrl::fromLocalFile(xmlinfo.absoluteFilePath())); m_pTcpServer = new QTcpServer(this); m_pTcpClient = new QTcpSocket(this); connect(m_pTcpServer,SIGNAL(newConnection()),this,SLOT(acceptDevConnect())); connect(ui->about, SIGNAL(triggered()), this, SLOT(about())); bSvrStart = false; bClientVaild = false; } testWebMap::~testWebMap() { delete ui; } //接收远端设备的新连接 void testWebMap::acceptDevConnect() { if(bClientVaild) { qDebug()<<"tcpclient already valid "; return; } qDebug()<<"recv dev new tcp connection "; m_pTcpClient = m_pTcpServer->nextPendingConnection(); connect(m_pTcpClient, SIGNAL(readyRead()), this, SLOT(onDataRecv())); connect(m_pTcpClient, SIGNAL(disconnected()), this, SLOT(disConnectEvent())); bClientVaild = true; } void testWebMap::convertGpsData(QString srcData, QString &destData,int pos) { int dotPos = srcData.indexOf("."); QString min=srcData.right(srcData.size()-(dotPos-2)); double fMin = min.toFloat(); double fD = (double)(srcData.left(pos).toInt()+(fMin/60)); destData = QString("%1").arg(QString::number(fD, 'f', 9)); //取到小数点后9位 qDebug()<<"min: "<<(fMin/60)<<",fD: "<<fD; } //接收数据并返回数据 void testWebMap::onDataRecv() { QString longitude; QString latitude; while (m_pTcpClient->bytesAvailable()>0) { QByteArray datagram; datagram.resize(m_pTcpClient->bytesAvailable()); datagram = m_pTcpClient->readLine(); QString gpsStr=datagram.data(); if (std::string::npos == gpsStr.toStdString().find("RMC")) { qDebug()<<"not find RMC data"; continue; } QStringList strList = gpsStr.split(","); if (strList.isEmpty() || (strList.size() < 3)) { qDebug()<<"list is : "<<strList.isEmpty()<<", size = "<<strList.size(); continue; } latitude = strList.at(3); longitude=strList.at(5); if(strList.at(2) == "V") { qDebug()<<"gps data invalid!"; return; } convertGpsData(strList.at(3),latitude,2); convertGpsData(strList.at(5),longitude,3); QString fun=QString("doLocal(\"%1\",\"%2\");").arg(longitude).arg(latitude); qDebug()<<"fun: "<<fun ; ui->webView->page()->mainFrame()->evaluateJavaScript(fun); } } void testWebMap::disConnectEvent() { bClientVaild = false; m_pTcpClient->close(); } void testWebMap::addObjectToJs() { ui->webView->page()->mainFrame()->addToJavaScriptWindowObject("testWebMap", this); } void testWebMap::doJavascript2(QString str) { ui->longitude->setText(str); } void testWebMap::on_modifyButton_clicked() { QString longitude=ui->longitude->text(); QString latitude=ui->latitude->text(); convertGpsData(latitude,latitude,2); convertGpsData(longitude,longitude,3); QString fun=QString("doLocal(\"%1\",\"%2\");").arg(longitude).arg(latitude); qDebug()<<"longitude: "<<longitude<<", latitude: "<<latitude ; qDebug()<<"fun: "<<fun ; ui->webView->page()->mainFrame()->evaluateJavaScript(fun); } void testWebMap::on_svrButtn_clicked() { if (!bSvrStart) { bSvrStart = true; quint16 svrPort = ui->port->text().toShort(); qDebug()<<"port: "<<svrPort; m_pTcpServer->listen(QHostAddress::Any,svrPort); ui->svrButtn->setText(tr("关闭")); } else { bClientVaild = false; bSvrStart = false; m_pTcpServer->close(); ui->svrButtn->setText(tr("启动")); } } void testWebMap::on_reloadUrl_clicked() { ui->webView->reload(); } void testWebMap::about() { QMessageBox::about(this, "about", tr("调试服务器 \n" "Email : wuquan-1230@163.com\n" "Author : wuwei\n" "Ver : 2018-01-28\n" "说 明 : 将gps原始经纬度数据显示在百度地图上，使用时需要联网；" )); }