毕业设计基于C++的可视化电子点菜系统源码+详细代码注释.zip

#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); //分配空间，指定父对象 tcpSocket = new QTcpSocket(this); setWindowTitle("客户端"); QString ip = "127.0.0.1"; quint16 port =8000; qDebug()<<ip<<"::"<<port; //主动和服务器建立连接 tcpSocket->connectToHost(QHostAddress(ip),port); connect(tcpSocket,&QTcpSocket::connected,[this](){ QMessageBox::information(this,"连接","成功和服务器建立连接"); qDebug()<<"连接成功"; }); connect(tcpSocket, &QTcpSocket::readyRead,this,&MainWindow::getSign); //获取菜单信息 get_dish(); } MainWindow::~MainWindow() { delete ui; } //发送数据 void MainWindow::seedDate(int flag, int tab) { Data data; QByteArray sendTcpData; QString str; data.flag = flag;//标记 data.tab_num = tab;//桌号 for (int i=0;i<3;i++) { for (int j=0;j<6;j++) { data.food[i][j] = food[i][j]; } } int Len = 20*sizeof(int); sendTcpData.resize(Len); memcpy(sendTcpData.data(),&data,size_t(Len)); tcpSocket->write(sendTcpData); sendTcpData.clear(); sendTcpData.squeeze(); } //获取服务端发送的信号 void MainWindow::getSign() { Sign sign, *get_Sign; QByteArray buffer; //读取缓冲区数据 buffer = tcpSocket->readAll(); if(!buffer.isEmpty()) { memset(&sign,0,sizeof (sign)); get_Sign = (Sign*)buffer.data(); //强转为结构体，需要用结构体指针接收 //读取数据 sign.flag_1 = get_Sign->flag_1; sign.flag_2 = get_Sign->flag_2; } if(sign.flag_1==0)//入座 { if(sign.flag_2==0)//入座失败 { QMessageBox::information(this,"入座","入座失败，该桌已被占用"); } else if(sign.flag_2==1)//入座成功 { tab_num = ui->table_number->text().toInt(); tab[tab_num-1]=1; QMessageBox::information(this,"入座","入座成功，请开始点菜"); ui->textEdit->append("入座成功"); } } else if(sign.flag_1==1)//下桌 { tab[sign.flag_2-1]=0; if(sign.flag_2==tab_num) { tab_num=0; submit_flag=0; total_price=0; ui->table_number->setText(""); ui->total_amount->setText(QString::number(total_price)); ui->textEdit->setText(""); QMessageBox::information(this,"下桌","你已被后台强制下桌"); } } else if(sign.flag_1==2)//提交订单 { if(sign.flag_2==0)//订单失败 { QMessageBox::information(this,"订单","订单失败，选择的菜品剩余不足，\n请重新选择或呼叫服务员"); } else if(sign.flag_2==1)//订单成功 { submit_flag=1;//提交成功标记 Total_price();//统计价格 ui->table_number->setText(QString::number(tab_num)); QMessageBox::information(this,"订单","订单提交成功"); ui->textEdit->append("订单提交成功"); R_order(); } } } //入座 void MainWindow::on_table_Button_clicked() { int n; n = ui->table_number->text().toInt(); if(n>=1 && n<=8) { seedDate(0, n); } else { QMessageBox::information(this,"桌号","入座失败,请在1~8桌入座"); } } //提交订单 void MainWindow::on_submit_Button_clicked() { if(tab_num==0) { QMessageBox::information(this,"提交订单","提交订单失败，请先选择桌号"); } else { seedDate(1, tab_num); } } //合计 void MainWindow::Total_price() { QString str=""; int fp = 0; str = QString::number(tab_num) + "号桌"; for (int i=0;i<3;i++) { for (int j=0;j<6;j++) { if(food[i][j] > 0) { fp = food[i][j]*price[i][j]; str = str + dish_name[i][j] + "----------------- × " + QString::number(food[i][j]) + " -- ¥ " + QString::number(fp); total_price += fp; } } } ui->total_amount->setText(QString::number(total_price)); ui->textEdit->append(str); ui->textEdit->append("合计：¥ " + QString::number(total_price)); } //呼叫服务员 void MainWindow::on_call_Button_clicked() { seedDate(2, tab_num); QMessageBox::information(this,"呼叫","呼叫成功"); } //支付 void MainWindow::on_pay_Button_clicked() { if(submit_flag==0) { QMessageBox::information(this,"支付","支付失败,没有待支付订单"); } else {//支付成功后离开 //QString str = "0" + QString::number(tab_num);//以0开同做标记 seedDate(3, tab_num); QMessageBox::information(this,"支付","支付成功"); tab[tab_num-1]=0; tab_num=0; submit_flag=0; total_price=0; ui->table_number->setText(""); ui->total_amount->setText(QString::number(total_price)); ui->textEdit->setText(""); } } //获取菜品信息 void MainWindow::get_dish() { //获取价格 price[0][0] = ui->price1_1->text().toInt(); price[0][1] = ui->price1_2->text().toInt(); price[0][2] = ui->price1_3->text().toInt(); price[0][3] = ui->price1_4->text().toInt(); price[0][4] = ui->price1_5->text().toInt(); price[0][5] = ui->price1_6->text().toInt(); price[1][0] = ui->price2_1->text().toInt(); price[1][1] = ui->price2_2->text().toInt(); price[1][2] = ui->price2_3->text().toInt(); price[1][3] = ui->price2_4->text().toInt(); price[1][4] = ui->price2_5->text().toInt(); price[1][5] = ui->price2_6->text().toInt(); price[2][0] = ui->price3_1->text().toInt(); price[2][1] = ui->price3_2->text().toInt(); price[2][2] = ui->price3_3->text().toInt(); price[2][3] = ui->price3_4->text().toInt(); price[2][4] = ui->price3_5->text().toInt(); price[2][5] = ui->price3_6->text().toInt(); //获取菜名 dish_name[0][0] = ui->dishName1_1->text(); dish_name[0][1] = ui->dishName1_2->text(); dish_name[0][2] = ui->dishName1_3->text(); dish_name[0][3] = ui->dishName1_4->text(); dish_name[0][4] = ui->dishName1_5->text(); dish_name[0][5] = ui->dishName1_6->text(); dish_name[1][0] = ui->dishName2_1->text(); dish_name[1][1] = ui->dishName2_2->text(); dish_name[1][2] = ui->dishName2_3->text(); dish_name[1][3] = ui->dishName2_4->text(); dish_name[1][4] = ui->dishName2_5->text(); dish_name[1][5] = ui->dishName2_6->text(); dish_name[2][0] = ui->dishName3_1->text(); dish_name[2][1] = ui->dishName3_2->text(); dish_name[2][2] = ui->dishName3_3->text(); dish_name[2][3] = ui->dishName3_4->text(); dish_name[2][4] = ui->dishName3_5->text(); dish_name[2][5] = ui->dishName3_6->text(); } //重置 void MainWindow::R_order() { ui->count1_1->setText(QString::number(0)); ui->count1_2->setText(QString::number(0)); ui->count1_3->setText(QString::number(0)); ui->count1_4->setText(QString::number(0)); ui->count1_5->setText(QString::number(0)); ui->count1_6->setText(QString::number(0)); ui->count2_1->setText(QString::number(0)); ui->count2_2->setText(QString::number(0)); ui->count2_3->setText(QString::number(0)); ui->count2_4->setText(QString::number(0)); ui->count2_5->setText(QString::number(0)); ui->count2_6->setText(QString::number(0)); ui->count3_1->setText(QString::number(0)); ui->count3_2->setText(QS