Qt_719/code/chart/chart_file.cpp

#include "chart_file.h"
#include "ui_chart_file.h"

#include <QDebug>
#include <QMessageBox>
#include <QFile>

chart_file::chart_file(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::chart_file),
    chart(new QChart),
    timer(new QTimer),
    count(0)
{
    ui->setupUi(this);
    QStandardItemModel* model = treeModel->tree_set();
    ui->tree_set->setModel(model);
    ui->tree_set->expandAll();
    // 将 QTreeView 的 clicked 信号连接到 handleTreeItemClicked 槽函数
    connect(ui->tree_set, &QTreeView::clicked, this, &chart_file::handleTreeItemClicked);
    // 初始化变量
    time=nullptr;
    point1=nullptr;
    point2=nullptr;

    // 设置点的数量
    pointsSize=200;

    // 初始化字体颜色
    initFontColor();

    // 初始化读取数据
    initReadData();

    // 设置定时器间隔为100毫秒
    timer->setInterval(100);

    // 启动定时器
    timer->start();
}

chart_file::~chart_file()
{
    // 释放UI对象和动态分配的内存
    delete ui;

    // 释放动态分配的数组内存
    delete [] time;
    delete [] point1;
    delete [] point2;

    // 释放二维数组tempDis的内存
    for (int i=0;i<pointsNum;i++) {
        delete [] tempDis[i];
    }
    delete [] tempDis;
}
void chart_file::setTreeModel(tree_model_set* model)
{
    treeModel = model; // 设置 tree_model_set 实例
}
void chart_file::handleTreeItemClicked(const QModelIndex &index) {
    // 转发信号
    emit treeItemClicked(index);
}
// 鼠标滚轮事件处理函数
void chart_file::wheelEvent(QWheelEvent *event)
{
    if (event->angleDelta().y() > 0) {
        chart->zoom(1.1);
    } else {
        chart->zoom(10/1.1);
    }

    QWidget::wheelEvent(event);
}

void chart_file::initUI()
{
    initChart();
}
// 初始化图表
void chart_file::initChart()
{
    //chart->createDefaultAxes();

    /**修改**/
    axisX=new QValueAxis();
    axisX->setTitleFont(QFont("Microsoft YaHei", 10, QFont::Normal, true));
    axisX->setTitleText("Time(s)");
    axisX->setGridLineVisible(true);
    chart->addAxis(axisX,Qt::AlignBottom);

    axisY=new QValueAxis();
    axisY->setTitleFont(QFont("Microsoft YaHei", 10, QFont::Normal, true));
    axisY->setTitleText("值");
    axisY->setGridLineVisible(true);
    chart->addAxis(axisY,Qt::AlignLeft);
    for (int i=0;i<pointsNum;i++) {
        series[i]->attachAxis(axisX);
        series[i]->attachAxis(axisY);
    }
    /**修改**/
    chart->legend()->hide();
    chartView = new QChartView(chart);
    chartView->setRenderHint(QPainter::Antialiasing);//抗锯齿渲染
    ui->mainvertical->addWidget(chartView);
}
// 初始化信号槽连接
// 初始化槽函数，连接信号和槽
void chart_file::initSlot()
{
    connect(timer, SIGNAL(timeout()), this, SLOT(timerSlot()));
    connect(ui->allRadioButton,SIGNAL(clicked()),this,SLOT(selectAll()));
    connect(ui->invertRadioButton,SIGNAL(clicked()),this,SLOT(invertSelect()));

    for (int i=0;i<pointsNum;i++) {
        connect(checkBoxVector.at(i),SIGNAL(toggled(bool)),this,SLOT(checkboxChanged()));
        connect(series[i], SIGNAL(hovered(QPointF, bool)), this, SLOT(tipSlot(QPointF,bool)));
    }
}


// 添加图表数据
void chart_file::addChartData(float time, float *pointsDis)
{
    float globalMinX = time;
    float globalMaxX = time;
    float globalMinY = pointsDis[0];
    float globalMaxY = pointsDis[0];

    for (int i = 0; i < pointsNum; i++)
    {
        QVector<QPointF> data = series[i]->pointsVector();

        data.append(QPointF(time, pointsDis[i]));

        float minX = data.at(0).x();
        float maxX = data.at(0).x();
        float minY = data.at(0).y();
        float maxY = data.at(0).y();

        for (int j = 0; j < data.size(); j++) {
            if (minY > data.at(j).y())
                minY = data.at(j).y();
            if (maxY < data.at(j).y())
                maxY = data.at(j).y();
        }

        if (i == 0)
        {
            for (int j = 0; j < data.size(); j++) {
                if (minX > data.at(j).x())
                    minX = data.at(j).x();
                if (maxX < data.at(j).x())
                    maxX = data.at(j).x();
            }
            globalMinX = minX;
            globalMaxX = maxX;
        }

        globalMinY = globalMinY < minY ? globalMinY : minY;
        globalMaxY = globalMaxY > maxY ? globalMaxY : maxY;

        series[i]->replace(data);

        tempDis[i][0] = pointsDis[i];
        tempDis[i][1] = maxY;
        tempDis[i][2] = minY;
    }

    addTableData(tempDis);

    axisX->setRange(globalMinX, globalMaxX);
    axisY->setRange(globalMinY - (globalMaxY - globalMinY) * 0.1, globalMaxY + (globalMaxY - globalMinY) * 0.1);
}


// 设置点的数量
void chart_file::setPointsNum(int num)
{
    if(num>9)
    {
        QMessageBox::information(this,"Warnning","The number of points exceed 9!");
        return;
    }

    tempDis=new float*[num];

    pointsNum=num;
    //model->setRowCount(num);

    // 该函数用于初始化图表中的数据系列，并为每个数据系列设置颜色和临时数据存储空间
    // 参数:
    // - pointsNum: 数据系列的数量
    // - series: 指向数据系列数组的指针
    // - colorTable: 包含每个数据系列颜色的QList
    // - chart: 指向图表对象的指针
    // - tempDis: 指向临时数据存储数组的指针
    for (int i=0;i<pointsNum;i++) {
        series[i]=new QLineSeries();
        series[i]->setColor(colorTable.at(i));
        chart->addSeries(series[i]);
        tempDis[i]=new float[3];
    }

    initUI();
    initTable(num);
    initSlot();
}

// 添加表格数据
void  chart_file::addTableData(float **pointsDis)
{
    for (int i=0;i<pointsNum;i++) {
        for (int j=0;j<3;j++) {
            model->setItem(i, j+1, new QStandardItem(QString::number(pointsDis[i][j])));
            model->item(i,j+1)->setForeground(QBrush(colorTable.at(i)));
            model->item(i, j+1)->setTextAlignment(Qt::AlignCenter);
        }
    }
}

// 初始化表格
void chart_file::initTable(int pointsNumber)
{
    ui->allRadioButton->setChecked(true);

    model = new QStandardItemModel();
    model->setColumnCount(4);
    model->setHorizontalHeaderItem(0, new QStandardItem(QObject::tr("曲线编号")));
    model->setHorizontalHeaderItem(1, new QStandardItem(QObject::tr("Displacements(mm)")));
    model->setHorizontalHeaderItem(2, new QStandardItem(QObject::tr("Peak(mm)")));
    model->setHorizontalHeaderItem(3, new QStandardItem(QObject::tr("Valley(mm)")));

    ui->tableView->setModel(model);

    ui->tableView->setEditTriggers(QAbstractItemView::NoEditTriggers);
    ui->tableView->verticalHeader()->hide();
    ui->tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    ui->tableView->setColumnWidth(1,100);

    model->setRowCount(pointsNumber);

    // 此函数用于在表格视图中创建多个复选框，并将它们添加到模型中
    // 每个复选框的标签为 "Point" 加上序号，并根据颜色数组设置样式
    // 最后，将复选框添加到表格视图中，并设置其初始状态为选中
    QString str="";
    for (int i=0;i<pointsNumber;i++) {
        str="Point";
        str+=QString::number(i+1);
        QCheckBox *box=new QCheckBox(str,ui->tableView);
        box->setStyleSheet(strColor[i]);
    
        checkBoxVector.append(box);
    
        model->setItem(i, 0, new QStandardItem(""));
        ui->tableView->setIndexWidget(model->index(i,0),checkBoxVector.at(i));
        model->item(i, 0)->setTextAlignment(Qt::AlignCenter);
        checkBoxVector.at(i)->setChecked(true);
    }
}

// 全选所有点
void chart_file::selectAll()
{
    for(int i=0;i<checkBoxVector.size();i++)
        checkBoxVector.at(i)->setChecked(true);
}

// 初始化字体颜色
void chart_file::initFontColor()
{
    colorTable.append(QColor(255,0,0));//red
    colorTable.append(QColor(0,0,255));//blue
    colorTable.append(QColor(0,255,0));//green
    colorTable.append(QColor(139,0,0));//dark red
    colorTable.append(QColor(255,255,0));//yellow
    colorTable.append(QColor(0,0,0));//black
    colorTable.append(QColor(128,42,42));//棕色
    colorTable.append(QColor(160,32,240));//purple
    colorTable.append(QColor(0,255,255));//青色

    strColor[0]="QCheckBox{color:rgb(255,0,0)}";
    strColor[1]="QCheckBox{color:rgb(0,0,255)}";
    strColor[2]="QCheckBox{color:rgb(0,255,0)}";
    strColor[3]="QCheckBox{color:rgb(139,0,0)}";
    strColor[4]="QCheckBox{color:rgb(255,255,0)}";
    strColor[5]="QCheckBox{color:rgb(128,42,42)}";
    strColor[7]="QCheckBox{color:rgb(160,32,240)}";
    strColor[8]="QCheckBox{color:rgb(0,255,255)}";
}

// 反选所有点
void  chart_file::invertSelect()
{
    for(int i=0;i<checkBoxVector.size();i++){
        if(checkBoxVector.at(i)->checkState())
            checkBoxVector.at(i)->setChecked(false);
        else
            checkBoxVector.at(i)->setChecked(true);
    }
}

// 复选框状态改变处理函数
void  chart_file::checkboxChanged()
{
    for (int i=0;i<pointsNum;i++) {
        if(checkBoxVector.at(i)->checkState()){
            series[i]->setVisible(true);
        }
        else {
            series[i]->setVisible(false);
        }
    }
}

// 初始化读取数据
void chart_file::initReadData()
{
    QString name = "D:/document/code_all/Qt/QtChartWidget-master/QtChartWidget/data/3.txt";

    QFile readFile(name);
    int i=0;

    if(!readFile.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        QMessageBox::information(nullptr, "Warning", "Fail to read the file");
        return;
    }

    QTextStream readStream(&readFile);
    QString line;

    time=new float[10000];
    point1=new float[10000];
    point2= new float[10000];
    QString str="";

    while(i<10000)
    {
        line=readStream.readLine();

        if(!line.isEmpty())
        {
            QStringList list = line.split(QRegularExpression(","), Qt::SkipEmptyParts);

            time[i]=list.at(0).toFloat();
            point1[i]=list.at(1).toFloat();
            point2[i]=list.at(2).toFloat();

            if(i<20)
            {
                str+=QString::number(time[i]);
                str+=", ";
                str+=QString::number(point1[i]);
                str+=", ";
                str+=QString::number(point2[i]);
                str+="\n";
            }
        }

        i++;
    }

    readFile.close();
}

// 添加数据
void chart_file::addData()
{
    float y[2];
    y[0]=point1[count];
    y[1]=point2[count];

    addChartData(time[count],y);

    count++;
}

// 定时器槽函数
void chart_file::timerSlot()
{
    if (QObject::sender() == timer) {
        addData();
    }
}