基于Qt框架和c++实现的串口监视器源码(课程作业).zip

#include "mainwindow.h" #include <QWindow> #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); //窗口初始化 ui->adjustable_splitter->setStretchFactor(0, 1); //设置水平分裂器比例 serial = new QSerialPort; ScanPort(); SetComPort(); //ui->statusBar->setStyleSheet("QStatusBar{background-color:#3a9aeb;}"); for (int i = 0; i < 9; i++) { ui->BaudRate->addItem(QString::number(baud_val[i])); } //Json解析 QFile file("config.json"); file.open(QIODevice::ReadOnly | QIODevice::Text); QString config_str = file.readAll(); file.close(); QJsonParseError parseJsonErr; QJsonDocument document = QJsonDocument::fromJson(config_str.toUtf8(),&parseJsonErr); if(!(parseJsonErr.error == QJsonParseError::NoError)) { ui->set_flow_ctrl->setCurrentIndex(FC_index); ui->set_data_bits->setCurrentIndex(DB_index); ui->set_parity_bits->setCurrentIndex(PA_index); ui->set_stop_bits->setCurrentIndex(SB_index); ui->font_size->setValue(15); ui->clear_aftersend->setChecked(true); ui->is_send_return->setChecked(false); ui->isShowTime->setChecked(false); ui->BaudRate->setCurrentText("9600"); ui->duplicate_allowed->setChecked(false); ui->isTop->setChecked(false); } else { config = document.object(); ui->set_flow_ctrl->setCurrentIndex(config["FlowContral"].toInt()); ui->set_data_bits->setCurrentIndex(config["DataBits"].toInt()); ui->set_parity_bits->setCurrentIndex(config["Parity"].toInt()); ui->set_stop_bits->setCurrentIndex(config["StopBits"].toInt()); ui->font_size->setValue(config["FontSize"].toInt()); ui->clear_aftersend->setChecked(config["ClearAfterSend"].toBool()); ui->is_send_return->setChecked(config["SendReturn"].toBool()); ui->isShowTime->setChecked(config["isShowTime"].toBool()); ui->BaudRate->setCurrentText(config["BaudRate"].toString()); ui->duplicate_allowed->setChecked(config["DuplicateAllowed"].toBool()); add_blank = config["AddBlank"].toInt(); ui->isTop->setChecked(config["isTop"].toBool()); } init = 1; SetFontSize(); ConfigPort(); BaudRate(); if (ui->isTop->isChecked()) { setWindowFlags(windowFlags() | Qt::WindowStaysOnTopHint); } else { setWindowFlags(windowFlags()); } init = 0; ui->statusBar->showMessage("就绪"); //链接槽和信号 connect(ui->refrush, &QPushButton::clicked, this, &MainWindow::ScanPort); connect(ui->Send_btn, &QPushButton::clicked, this, &MainWindow::SendData); connect(ui->port_list, &QComboBox::currentTextChanged, this, &MainWindow::SetComPort); connect(serial,&QSerialPort::readyRead,this,&MainWindow::ReceiveData); connect(ui->operate_port, &QAction::triggered, this, &MainWindow::OperatePort); connect(ui->msg, &QTextEdit::textChanged, this, &MainWindow::SeeBottom); connect(ui->BaudRate, &QComboBox::currentTextChanged, this, &MainWindow::BaudRate); connect(ui->save_msg, &QAction::triggered, this, &MainWindow::SaveMessage); connect(ui->operate_port_btn, &QPushButton::clicked, this, &MainWindow::OperatePort); connect(ui->font_size, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), this, &MainWindow::SetFontSize); connect(ui->set_data_bits, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentIndexChanged), this, &MainWindow::ConfigPort); connect(ui->set_flow_ctrl, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentIndexChanged), this, &MainWindow::ConfigPort); connect(ui->set_stop_bits, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentIndexChanged), this, &MainWindow::ConfigPort); connect(ui->set_parity_bits, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentIndexChanged), this, &MainWindow::ConfigPort); connect(ui->isTop, &QCheckBox::clicked, this, &MainWindow::ChangeTopState); } MainWindow::~MainWindow() { delete ui; } void MainWindow::ScanPort() { ui->statusBar->setStyleSheet("QStatusBar{background-color:#3a9aeb;}"); ui->port_list->clear(); m_serialPortName.clear(); foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts()) { m_serialPortName << info.portName(); } ui->port_list->addItems(m_serialPortName); if (ui->port_list->count() != 0) { ui->operate_port_btn->setEnabled(true); ui->operate_port->setEnabled(true); } } void MainWindow::SendData() { QString data = ui->message->text(); QString data_cpy = data; if (!add_blank) data_cpy.remove(QRegExp("\\s")); //去除字符串内的全部空格,注释此行,添加全是空格的项 if (!data_cpy.isEmpty()) { if (ui->duplicate_allowed->isChecked()) { int found = 0; for(int i = 0; i < ui->msg_history->count(); i++) { if (ui->msg_history->item(i)->text() == data) { found = 1; break; } } if (!found) { ui->msg_history->addItem(data); ui->msg_history->scrollToBottom(); } } else { ui->msg_history->addItem(data); ui->msg_history->scrollToBottom(); } } if (serial->isOpen()) { if (ui->is_send_return->isChecked()) { data += "\r\n"; } serial->write(data.toUtf8().data()); } else { ui->statusBar->showMessage("发送失败,串口未打开"); } if (ui->clear_aftersend->isChecked()) { ui->message->clear(); } return; } void MainWindow::ReceiveData() { QString data_str; data_str += (QString)serial->readAll(); if (isInsertN && ui->isShowTime->isChecked()) { isInsertN = 0; data_str.insert(0, QDateTime::currentDateTime().toString("hh:mm:ss.zzz") + " -> "); } if (ui->isShowTime->isChecked()) { //data_str = QDateTime::currentDateTime().toString("|hh:mm:ss.zzz") + " -> "; for (int i = 0; i < data_str.length(); i++) { if (data_str[i] == '\n' && i != data_str.length() - 1) { data_str.insert(i + 1, QDateTime::currentDateTime().toString("hh:mm:ss.zzz") + " -> "); } else if (data_str[i] == '\n' && i == data_str.length() - 1) { isInsertN = 1; } } } ui->msg->insertPlainText(data_str); } void MainWindow::SetComPort() { if (ui->port_list->count() == 0) { ui->statusBar->setStyleSheet("QStatusBar{background-color:#3a9aeb;}"); ui->operate_port_btn->setEnabled(false); ui->operate_port->setEnabled(false); ui->operate_port_btn->setText("没有串口"); ui->operate_port->setText("没有串口"); return; } serial->close(); serial->setPortName(ui->port_list->currentText()); ui->statusBar->showMessage("当前串口为:" + ui->port_list->currentText()); serial->open(QIODevice::ReadWrite); if (serial->isOpen()) { ui->statusBar->setStyleSheet("QStatusBar{background-color:#35ac00;}"); ui->operate_port->setIcon(QIcon(":/pic/port_close")); ui->operate_port->setText("关闭串口"); ui->operate_port_btn->setIcon(QIcon(":/pic/port_close")); ui->operate_port_btn->setText("关闭串口"); //serial->open(QIODevice::ReadWrite); } else