Project-XJKJ/LANGCHAO/XJKJ_QT/mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
#include <QMessageBox>

#define WINDOW_SIZE 200

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    initThread();
    initSiganl();
    initCombox();
    initPlot();
}

void MainWindow::initThread()
{
    serialthread = new SerialThread();
    portTh = new QThread(this);
    serialthread->moveToThread(portTh);
    portTh->start();
}

void MainWindow::initSiganl()
{
    connect(serialthread,&SerialThread::sigMessage,
            this,[=](QString msg)
    {
        QMessageBox::information(this,"错误",msg);
    });

    connect(this,&MainWindow::sigOpenSerial,serialthread,&SerialThread::openSerial,Qt::QueuedConnection);
    connect(serialthread,&SerialThread::sigTemperature,this,&MainWindow::updatePlot);
}


MainWindow::~MainWindow()
{
    portTh->quit();
    portTh->wait();

    delete ui;
}

void MainWindow::initCombox()
{
    QList<QSerialPortInfo> ports = QSerialPortInfo::availablePorts();

    if(ports.isEmpty())
        return;

    ui->comboBox_port->clear();

    for(const auto &info : ports)
    {
        ui->comboBox_port->addItem(info.portName());
    }
}

void MainWindow::initPlot()
{
    for(int i = 1; i <= 32; i++)
    {
        m_names << QString::number(i);
    }

    QList<QColor> colors =
    {
        QColor("#E6194B"),QColor("#3CB44B"),QColor("#4363D8"),QColor("#F58231"),
        QColor("#911EB4"),QColor("#46F0F0"),QColor("#F032E6"),QColor("#BCF60C"),
        QColor("#FABEBE"),QColor("#008080"),QColor("#E6BEFF"),QColor("#9A6324"),
        QColor("#FFFAC8"),QColor("#800000"),QColor("#AAFFC3"),QColor("#808000"),
        QColor("#FFD8B1"),QColor("#000075"),QColor("#808080"),QColor("#A9A9A9"),
        QColor("#FF4500"),QColor("#2E8B57"),QColor("#1E90FF"),QColor("#DA70D6"),
        QColor("#B8860B"),QColor("#20B2AA"),QColor("#DC143C"),QColor("#7B68EE"),
        QColor("#228B22"),QColor("#FF1493"),QColor("#4682B4"),QColor("#CD853F")
    };

    for(int i = 0; i < m_names.size(); i++)
    {
        QCPGraph *graph = ui->customPlot->addGraph();
        graph->setName(m_names[i]); QPen pen(colors[i]);
        pen.setWidth(1);
        graph->setPen(pen);
    }

    ui->customPlot->xAxis->setLabel("Time");
    ui->customPlot->yAxis->setLabel("Temperature (°C)");
    ui->customPlot->xAxis->setRange(0, WINDOW_SIZE);
    ui->customPlot->yAxis->setRange(0.0, 100.0);
    ui->customPlot->yAxis->setNumberFormat("f");
    ui->customPlot->yAxis->setNumberPrecision(1);

    // 主刻度: 每5℃显示数字
    QSharedPointer<QCPAxisTickerFixed> yTicker(new QCPAxisTickerFixed);
    yTicker->setTickStep(5);
    ui->customPlot->yAxis->setTicker(yTicker);
    // 开启子刻度
    ui->customPlot->yAxis->setSubTicks(true);
    // X轴不要网格（不要竖线）
    ui->customPlot->xAxis->grid()->setVisible(false);
    // X轴不要子刻度
    ui->customPlot->xAxis->setSubTicks(false);
    // Y轴主网格
    ui->customPlot->yAxis->grid()->setVisible(true);
    // Y轴子网格
    ui->customPlot->yAxis->grid()->setSubGridVisible(true);
    // ================= 允许x轴拖动 缩放 =================
    ui->customPlot->setInteractions(QCP::iNone);
    ui->customPlot->replot();
}

void MainWindow::on_connect_btn_clicked()
{
    QString portname = ui->comboBox_port->currentText();
    emit sigOpenSerial(portname);
}

void MainWindow::updatePlot(QVector<double> values)
{
    for(int i = 0; i < 32; i++)
    {
        if(!std::isnan(values[i]))
        {
            ui->customPlot->graph(i)->addData(m_timeIndex,values[i]);
        }
    }

    for(int i=0;i<32;i++)
    {
        ui->customPlot->graph(i)->data()->removeBefore(m_timeIndex - WINDOW_SIZE);
    }

    if(m_timeIndex > WINDOW_SIZE)
    {
        ui->customPlot->xAxis->setRange(m_timeIndex - WINDOW_SIZE,m_timeIndex);
    }

    ui->customPlot->replot();
    m_timeIndex++;
}