C++、qt环境下的C/S聊天器

#include "chat.h" Chat::Chat() { serverSocket = NULL; server = NULL; client = NULL; setupUi(this); login = new LoginDialog; login->show(); connect(login, SIGNAL(showChatWindow()), this, SLOT(showAndHideSlot())); connect(login, SIGNAL(sendEnterMessage(QString , QString)), this,SLOT(enterSlot(QString , QString ))); connect(writeMessageEdit, SIGNAL(textChanged()), this, SLOT(changeButtonStateSlot())); connect(aboutButton, SIGNAL(clicked()), this, SLOT(createAboutSlot())); connect(sendButton, SIGNAL(clicked()), this, SLOT(appendMessageSlot())); connect(quitButton, SIGNAL(clicked()), qApp, SLOT(quit())); } void Chat::showAndHideSlot() { delete login; this->show(); } void Chat::createAboutSlot() {} void Chat::enterSlot(QString name, QString host) { port = 22222; if (host.isEmpty()) { socketServer(); } else { socketClient(host); } userName = name; onlineMessageList->addItem(name); } void Chat::changeButtonStateSlot() { bool boo_dis = writeMessageEdit->toPlainText().isEmpty(); sendButton->setDisabled(boo_dis); } void Chat::appendMessageSlot() { QString content = writeMessageEdit->toPlainText(); if (content.isEmpty()) { QMessageBox::warning(this, "出错", QString::fromLocal8Bit("发送的内容不能为空")); return; } nowDateTime = QDateTime::currentDateTime(); showMessageEdit->append( QString("\n[%1] %2 %3\n%4") .arg(nowDateTime.toString("yyyy-MM-dd hh:mm:ss")) .arg(userName) .arg(QString::fromLocal8Bit("说道:")) .arg(content) ); QDataStream out; if (serverBool) { out.setDevice(serverSocket); } else if (!serverBool) { out.setDevice(client); } int mark = 0; out << mark; out << userName << content; writeMessageEdit->clear(); } void Chat::socketServer() { serverBool = true; server = new QTcpServer(this); serverSocket = new QTcpSocket(this); server->listen(QHostAddress::Any, port); connect(server, SIGNAL(newConnection()), this, SLOT(newConnectionSlot())); } void Chat::newConnectionSlot() { serverSocket = server->nextPendingConnection(); connect(serverSocket, SIGNAL(readyRead()), this, SLOT(newDataSlot())); connect(serverSocket, SIGNAL(disconnected()), this, SLOT(deleNameSlot())); } void Chat::socketClient(QString host) { serverBool = false; client = new QTcpSocket(this); client->connectToHost(host, port); connect(client, SIGNAL(connected()), this, SLOT(addSlot())); connect(client, SIGNAL(readyRead()), this, SLOT(newDataSlot())); connect(client, SIGNAL(disconnected()), this, SLOT(deleNameSlot())); } void Chat::addSlot() { QString myName = userName; QString content; QDataStream out(client); int mark = 11; out << mark; out << myName << content; } void Chat::newDataSlot() { int mark; QString hisName; QString content; QDataStream in; if (serverBool) { in.setDevice(serverSocket); } else if (!serverBool) { in.setDevice(client); } in >> mark; // 数据解析 if (mark == 11) //addList { in >> hisName >> content; if (content.isEmpty()) { onlineMessageList->addItem(hisName); if (serverBool) { QString content; QDataStream out(serverSocket); int mark = 11; out << mark; out << userName<< content; } } return; } else if (mark == 0) //message { in >> hisName >> content; nowDateTime = QDateTime::currentDateTime(); showMessageEdit->append( QString("\n[%1] %2 %3\n%4") .arg(nowDateTime.toString("yyyy-MM-dd hh:mm:ss")) .arg(hisName) .arg(QString::fromLocal8Bit("说道:")) .arg(content) ); return; } } void Chat::deleNameSlot() { onlineMessageList->takeItem(1); } void Chat::keyPressEvent(QKeyEvent *event) //ctrl+s { if (event->modifiers() == Qt::ControlModifier && event->key() == Qt::Key_S) { appendMessageSlot(); } else { event->ignore(); } } void Chat::closeEvent(QCloseEvent *event) //close application event { if (server != NULL) { server->close(); } if (client != NULL) { client->close(); } if (serverSocket != NULL) { serverSocket->close(); } event->accept(); } Chat::~Chat() { //free stack memory }