Qt_719/code/scope/scope.cpp

#include "scope.h"
#include "ui_scope.h"
#include <QGraphicsScene>
#include <QValueAxis>
#include <QLineSeries>
#include <QChart>
#include <QRandomGenerator>
#include <QVector>

scope::scope(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::scope)
{
    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, &scope::handleTreeItemClicked);
}

scope::~scope()
{
    delete ui;
}

void scope::setTreeModel(tree_model_set* model)
{
    treeModel = model; // 设置 tree_model_set 实例
}

void scope::handleTreeItemClicked(const QModelIndex &index) {
    // 转发信号
    emit treeItemClicked(index);
}

//函数功能:初始化图表
//参数:无
//返回值:无
//实现流程:
//1.创建 QGraphicsScene 并设置到 QGraphicsView
//2.初始化 lineSeries，如果为空则创建
//3.创建 QChart 并添加 lineSeries
//4.创建 QChartView 并将 chart 添加到 QGraphicsScene 中
void scope::Chart_Init()
{
    //初始化QChart的实例
        chart = new QChart();
        //初始化QSplineSeries的实例
        lineSeries = new QSplineSeries();
        //设置曲线的名称
        lineSeries->setName("测试曲线");
        //把曲线添加到QChart的实例chart中
        chart->addSeries(lineSeries);
        //声明并初始化X轴、两个Y轴
        QValueAxis *axisX = new QValueAxis();
        QValueAxis *axisY = new QValueAxis();
        //设置坐标轴显示的范围
        axisX->setMin(0);
        axisX->setMax(MAX_X);
        axisY->setMin(-1.5);
        axisY->setMax(MAX_Y);
        //设置坐标轴上的格点
        axisX->setTickCount(10);
        axisY->setTickCount(10);
        //设置坐标轴显示的名称
        QFont font("Microsoft YaHei",8,QFont::Normal);//微软雅黑。字体大小8
        axisX->setTitleFont(font);
        axisY->setTitleFont(font);
        axisX->setTitleText("X-Test");
        axisY->setTitleText("Y-Test");
        //设置网格不显示
        axisY->setGridLineVisible(false);
        //下方：Qt::AlignBottom，左边：Qt::AlignLeft
        //右边：Qt::AlignRight，上方：Qt::AlignTop
        chart->addAxis(axisX, Qt::AlignBottom);
        chart->addAxis(axisY, Qt::AlignLeft);
        //把曲线关联到坐标轴
        lineSeries->attachAxis(axisX);
        lineSeries->attachAxis(axisY);
        //把chart显示到窗口上
        ui->gra_scope11->setChart(chart);
        ui->gra_scope11->setRenderHint(QPainter::Antialiasing);      // 设置渲染：抗锯齿，如果不设置那么曲线就显得不平滑
}



void scope::DrawLine(float value)
{
    
    

    // // 如果超过了最大 X 轴范围，移除最早的数据点
    // if (count > MAX_X) {
    //     lineSeries->removePoints(0, lineSeries->count() - MAX_X);
        
    //     chart->axisX()->setRange(count - MAX_X, count); // 更新 X 轴范围
    // }

    // 遍历 newData，将新的数据点添加到曲线末端
    
        lineSeries->append(count, value); // 添加新的数据点
        chart->axisX()->setRange(0, count); // 更新 X 轴范围
        count++; // 更新点的计数
    

}


// 将 generateRandomData测试使用
QVector<QPointF> scope::generateRandomData(int pointCount) {
    QVector<QPointF> data;
    for (int i = 0; i < pointCount; ++i) {
        qreal x = i;
        qreal y = QRandomGenerator::global()->bounded(0, 100); // 生成0到100之间的随机数
        data.append(QPointF(x, y));
    }
    return data; // 返回数据
}

void scope::on_pushButton_clicked()//清空图像
{
    lineSeries->clear();
    chart->axisX()->setRange(0, 0); // 更新 X 轴范围
    chart->axisY()->setRange(-1.5, 1.5); // 更新 Y 轴范围
    count=0;
}