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widget.cpp
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410 lines (366 loc) · 12.9 KB
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#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
ui->label->setText(" SoftwareTesting 2016 ");
this->resize(850,550);
ui->textEdit->setFocusPolicy(Qt::StrongFocus);
ui->textBrowser->setFocusPolicy(Qt::NoFocus);
ui->textEdit->setFocus();
ui->textEdit->installEventFilter(this);
udpSocket = new QUdpSocket(this);
port = 45454;
udpSocket->bind(port,QUdpSocket::ShareAddress
| QUdpSocket::ReuseAddressHint);
connect(udpSocket,SIGNAL(readyRead()),this,SLOT(processPendingDatagrams()));
sendMessage(NewParticipant);
server = new TcpServer(this);
connect(server,SIGNAL(sendFileName(QString)),this,SLOT(sentFileName(QString)));
connect(ui->textEdit,SIGNAL(currentCharFormatChanged(QTextCharFormat)),this,SLOT(currentFormatChanged(const QTextCharFormat)));
}
void Widget::currentFormatChanged(const QTextCharFormat &format)
{//当编辑器的字体格式改变时，我们让部件状态也随之改变
ui->fontComboBox->setCurrentFont(format.font());
if(format.fontPointSize()<9) //如果字体大小出错，因为我们最小的字体为9
ui->fontsizecomboBox->setCurrentIndex(3); //即显示12
else ui->fontsizecomboBox->setCurrentIndex(
ui->fontsizecomboBox->findText(QString::number(format.fontPointSize())));
ui->textbold->setChecked(format.font().bold());
ui->textitalic->setChecked(format.font().italic());
ui->textUnderline->setChecked(format.font().underline());
color = format.foreground().color();
}
void Widget::processPendingDatagrams() //接收数据UDP
{
while(udpSocket->hasPendingDatagrams())
{
QByteArray datagram;
datagram.resize(udpSocket->pendingDatagramSize());
udpSocket->readDatagram(datagram.data(),datagram.size());
QDataStream in(&datagram,QIODevice::ReadOnly);
int messageType;
in >> messageType;
QString userName,localHostName,ipAddress,message;
QString time = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss");
switch(messageType)
{
case Message:
{
in >>userName >>localHostName >>ipAddress >>message;
ui->textBrowser->setTextColor(Qt::blue);
ui->textBrowser->setCurrentFont(QFont("Times New Roman",12));
ui->textBrowser->append("[ " +userName+" ] "+ time);
ui->textBrowser->append(message);
break;
}
case NewParticipant:
{
in >>userName >>localHostName >>ipAddress;
newParticipant(userName,localHostName,ipAddress);
break;
}
case ParticipantLeft:
{
in >>userName >>localHostName;
participantLeft(userName,localHostName,time);
break;
}
case FileName:
{
in >>userName >>localHostName >> ipAddress;
QString clientAddress,fileName;
in >> clientAddress >> fileName;
hasPendingFile(userName,ipAddress,clientAddress,fileName);
break;
}
case Refuse:
{
in >> userName >> localHostName;
QString serverAddress;
in >> serverAddress;
QString ipAddress = getIP();
if(ipAddress == serverAddress)
{
server->refused();
}
break;
}
}
}
}
//处理新用户加入
void Widget::newParticipant(QString userName,QString localHostName,QString ipAddress)
{
//查看是否已有此用户
bool bb = ui->tableWidget->findItems(localHostName,Qt::MatchExactly).isEmpty();
if(bb)//如果没有，则添加
{
//向QTableWidget中插入项--这里是以列的形式插入的
QTableWidgetItem *user = new QTableWidgetItem(userName);
QTableWidgetItem *host = new QTableWidgetItem(localHostName);
QTableWidgetItem *ip = new QTableWidgetItem(ipAddress);
ui->tableWidget->insertRow(0);//插入一行
ui->tableWidget->setItem(0,0,user);//设置行中列的项内容
ui->tableWidget->setItem(0,1,host);
ui->tableWidget->setItem(0,2,ip);
//设置显示窗口--更新
ui->textBrowser->setTextColor(Qt::gray);
ui->textBrowser->setCurrentFont(QFont("Times New Roman",10));
ui->textBrowser->append(tr("%1 is online!").arg(userName));
ui->onlineUser->setText(tr(" OnlineUsers:%1").arg(ui->tableWidget->rowCount()));
sendMessage(NewParticipant);//发送新用户加入消息
}
}
//处理用户离开
void Widget::participantLeft(QString userName,QString localHostName,QString time)
{
//获取当前用户所在行位置
int rowNum = ui->tableWidget->findItems(localHostName,Qt::MatchExactly).first()->row();
ui->tableWidget->removeRow(rowNum); //移除行
//更新显示窗口
ui->textBrowser->setTextColor(Qt::gray);
ui->textBrowser->setCurrentFont(QFont("Times New Roman",10));
ui->textBrowser->append(tr("%1 quit at %2 !").arg(userName).arg(time));
ui->onlineUser->setText(tr(" OnlineUsers:%1").arg(ui->tableWidget->rowCount()));
}
Widget::~Widget()
{
delete ui;
}
void Widget::changeEvent(QEvent *e)
{
QWidget::changeEvent(e);
switch (e->type()) {
case QEvent::LanguageChange: //如果语言更改
ui->retranslateUi(this); //重新载入语言
break;
default:
break;
}
}
QString Widget::getIP() //获取ip地址
{
QList<QHostAddress> list = QNetworkInterface::allAddresses();//返回主机上发现的所有IP地址。
foreach (QHostAddress address, list)
{
if(address.protocol() == QAbstractSocket::IPv4Protocol) //我们使用IPv4地址
return address.toString(); //以字符串返回IPv4地址
}
return 0;
}
void Widget::sendMessage(MessageType type, QString serverAddress) //发送信息
{
QByteArray data;
QDataStream out(&data,QIODevice::WriteOnly);
QString localHostName = QHostInfo::localHostName();
QString address = getIP();
out << type << getUserName() << localHostName;
switch(type)
{
case ParticipantLeft:
{
break;
}
case NewParticipant:
{
out << address;
break;
}
case Message :
{
if(ui->textEdit->toPlainText() == "")
{
QMessageBox::warning(0,tr("Warning"),tr("Content sends can't be null!!"),QMessageBox::Ok);
return;
}
out << address << getMessage();
//设置滚动条滚到最下面
ui->textBrowser->verticalScrollBar()->setValue(ui->textBrowser->verticalScrollBar()->maximum());
break;
}
case FileName:
{
int row = ui->tableWidget->currentRow();
QString clientAddress = ui->tableWidget->item(row,2)->text();
out << address << clientAddress << fileName;
break;
}
case Refuse:
{
out << serverAddress;
break;
}
}
//udp传输数据
udpSocket->writeDatagram(data,data.length(),QHostAddress::Broadcast, port);
}
QString Widget::getUserName() //获取用户名
{
QStringList envVariables;
envVariables << "USERNAME.*" << "USER.*" << "USERDOMAIN.*"
<< "HOSTNAME.*" << "DOMAINNAME.*";
//这里获取登陆用户的系统信息--使用的是电脑系统信息
QStringList environment = QProcess::systemEnvironment();
foreach (QString string, envVariables)
{
int index = environment.indexOf(QRegExp(string));//使用正则表达式进行匹配环境信息（以上各种信息中的一个）
if (index != -1)
{
QStringList stringList = environment.at(index).split('=');//将匹配的内容分割成两部分（一部分为名称，一部分为名称对应的值）
if (stringList.size() == 2)//确定分割后只含有名称和名称对应的值
{
return stringList.at(1);//首先匹配的是USERNAME.*，也只返回这个对应的用户名
break;
}
}
}
return " ";
}
QString Widget::getMessage() //获得要发送的信息
{
QString msg = ui->textEdit->toHtml();//将文本转换为html富文本进行传输
ui->textEdit->clear();
ui->textEdit->setFocus();
return msg;
}
void Widget::closeEvent(QCloseEvent *)
{
sendMessage(ParticipantLeft);//向其他未离开用户->发送用户离开消息
}
void Widget::sentFileName(QString fileName)
{
this->fileName = fileName;
sendMessage(FileName);
}
void Widget::hasPendingFile(QString userName,QString serverAddress, //接收文件
QString clientAddress,QString fileName)
{
QString ipAddress = getIP();
if(ipAddress == clientAddress)
{
int btn = QMessageBox::information(this,tr("Recieve file"),
tr("from%1(%2) de file：%3,recieve or not?")
.arg(userName).arg(serverAddress).arg(fileName),
QMessageBox::Yes,QMessageBox::No);
if(btn == QMessageBox::Yes)
{
QString name = QFileDialog::getSaveFileName(0,tr("save file"),fileName);
if(!name.isEmpty())
{
//建立Tcp连接传输文件
TcpClient *client = new TcpClient(this);
client->setFileName(name);
client->setHostAddress(QHostAddress(serverAddress));
client->show();
}
}
else{
sendMessage(Refuse,serverAddress);//拒绝接收
}
}
}
void Widget::on_send_clicked()//发送
{
sendMessage(Message);
}
void Widget::on_sendfile_clicked()
{
if(ui->tableWidget->selectedItems().isEmpty())
{
QMessageBox::warning(0,tr("Choose user"),tr("Please choose from the userlist first!"),QMessageBox::Ok);
return;
}
server->show();
server->initServer();
}
void Widget::on_close_clicked()//关闭
{
this->close();
}
//事件过滤---在消息编辑框内检测Enter按钮事件
bool Widget::eventFilter(QObject *target, QEvent *event)
{
if(target == ui->textEdit)
{
if(event->type() == QEvent::KeyPress)
{
QKeyEvent *k = static_cast<QKeyEvent *>(event);
if(k->key() == Qt::Key_Return)
{
on_send_clicked();
return true;
}
}
}
return QWidget::eventFilter(target,event);//一直进行检测！
}
void Widget::on_fontComboBox_currentFontChanged(QFont f)//字体设置
{
ui->textEdit->setCurrentFont(f);
ui->textEdit->setFocus();
}
void Widget::on_fontsizecomboBox_currentIndexChanged(QString size)//字体大小设置
{
ui->textEdit->setFontPointSize(size.toDouble());
ui->textEdit->setFocus();
}
void Widget::on_textbold_clicked(bool checked)//字体粗细设置
{
if(checked)
ui->textEdit->setFontWeight(QFont::Bold);
else
ui->textEdit->setFontWeight(QFont::Normal);
ui->textEdit->setFocus();
}
void Widget::on_textitalic_clicked(bool checked)//字体斜体设置
{
ui->textEdit->setFontItalic(checked);
ui->textEdit->setFocus();
}
void Widget::on_textUnderline_clicked(bool checked)//字体下划线设置
{
ui->textEdit->setFontUnderline(checked);
ui->textEdit->setFocus();
}
void Widget::on_textcolor_clicked()//字体颜色设置
{
color = QColorDialog::getColor(color,this);
if(color.isValid())
{
ui->textEdit->setTextColor(color);
ui->textEdit->setFocus();
}
}
void Widget::on_save_clicked()//保存聊天记录
{
if(ui->textBrowser->document()->isEmpty())
QMessageBox::warning(0,tr("Warning"),tr("Chat record is null to save!"),QMessageBox::Ok);
else
{
//获得文件名
QString fileName = QFileDialog::getSaveFileName(this,tr("save the chat record"),tr("chat record"),tr("text(*.txt);;All File(*.*)"));
if(!fileName.isEmpty())
saveFile(fileName);
}
}
bool Widget::saveFile(const QString &fileName)//保存文件
{
QFile file(fileName);
if(!file.open(QFile::WriteOnly | QFile::Text))
{
QMessageBox::warning(this,tr("save file"),
tr("can not save file %1:\n %2").arg(fileName)
.arg(file.errorString()));
return false;
}
QTextStream out(&file);
out << ui->textBrowser->toPlainText();
return true;
}
void Widget::on_clear_clicked()//清空聊天记录
{
ui->textBrowser->clear();
}