QQ (6).zip

本片文章的代码#include "chatwindow.h" #include "ui_chatwindow.h" #include <QDebug> #include <QJsonDocument> #include <QJsonParseError> #include <QJsonObject> #include <QHostInfo> #include<QWidgetItem> #include<QTime> ChatWindow::ChatWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::ChatWindow) { ui->setupUi(this); destIP = "255.255.255.0"; destport=8888; udpSocket = new QUdpSocket(this); bool ok = udpSocket->bind(8888); if(!ok){ qDebug() << "Fail to bind port:8888 , error:" << udpSocket->errorString(); return; } connect(udpSocket,SIGNAL(readyRead()),this,SLOT(recvMessage())); } ChatWindow::~ChatWindow() { delete ui; } void ChatWindow::processTheDatagram(const QByteArray &data;,const QHostAddress &sender;, const int senderPort) { //将我们的接收到的json包借读根据不同的message_type值来选择相应的类容 QJsonParseError parseError; qDebug()<<senderPort; QJsonDocument jsondoc = QJsonDocument::fromJson(data,&parseError;); if(jsondoc.isNull() || parseError.error != QJsonParseError::NoError){ qDebug() << "Fail to parse json data : " << parseError.errorString(); return; } QJsonObject jsonObject = jsondoc.object(); int message_type = jsonObject["message_type"].toInt(); QString name = jsonObject["name"].toString(); QString content = jsonObject["content"].toString(); short port = (short)jsonObject["port"].toInt(); switch(message_type){ case ChatWindow::LOGIN_MESSAGE: //添加登陆的用户到好友列表 //给登陆的用户发送一个应答消息，告诉他自己在线 doUserLogin(QHostAddress(sender.toIPv4Address()),name,port); break; case ChatWindow::CHAT_MESSAGE: //显示聊天的消息 break; case ChatWindow::ACK_MESSAGE: //添加应答用户到好友列表 doUserAck(QHostAddress(sender.toIPv4Address()),name,port); return; case ChatWindow::QUIT_MESSAGE: //将退出的用户从好友列表中删除 doUserQuit(QHostAddress(sender.toIPv4Address()),name,port); break; } displaySendChatMessage(username,content); return; } //实现第一个功能将显示好友和自己的上线信息。有 void ChatWindow::doUserLogin(const QHostAddress &ip;, const QString &name;,short port) { //添加登陆的用户到好友列表 addUserToList(ip,name,port); if(!checkSelfIp(ip)){ //告诉登陆的用户，自己在线 tellLoginUser(ip,port); } return; } //添加用户到好友链表中去 void ChatWindow::doUserAck(const QHostAddress &ip;, const QString &name;, short port) { addUserToList(ip,name,port); } void ChatWindow::doUserQuit(const QHostAddress &ip;, const QString &name;, short port) { QString text = QString("%1\n%2:%3").arg(name).arg(ip.toString()).arg(port); QList<QListWidgetItem *> itemList = ui->listWidget->findItems(text,Qt::MatchExactly); for(int i = 0;i < itemList.size();i ++){ ui->listWidget->removeItemWidget(itemList[i]); delete itemList[i]; } return; } //加入一个listwight void ChatWindow::addUserToList(const QHostAddress &ip;, const QString &name;, short port) { QString text = QString("%1\n%2:%3").arg(name).arg(ip.toString()).arg(port); //一种输出文本格式可以相当于printf ui->listWidget->addItem(new QListWidgetItem(QIcon(":/image/HeadImage.png"),text)); //加图片在listWidget中去 ui->listWidget->setIconSize(QSize(50,50));