qt 中图表实时滚动的实现

在程序中对图表的实现，可以利用QT中的QtCharts的类，qt中图表类已经封装的非常全面，工作中常用的图表类型基本都有封装，而且都可以直接调用。
程序中有时候也需要用图表来实现对数据的实时监控，实现图表滚动的效果。

.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    value11 = 0;
    QTimer *timer = new QTimer(this);
    connect(timer,SIGNAL(timeout()),this,SLOT(onTime()));
    timer->start(1000);
    series = new QLineSeries();
    series->setPen(QPen(Qt::blue,2,Qt::SolidLine));
    QChart *chart = new QChart();
    chart->legend()->hide();
    chart->addSeries(series);
    chart->createDefaultAxes();
    chart->axisX()->setRange(0,59);
    chart->axisY()->setRange(0,10);
    QCategoryAxis *axisX = new QCategoryAxis();
    QCategoryAxis *axisY = new QCategoryAxis();

    chart->setAxisX(axisX, series);
    chart->setAxisY(axisY, series);
    QChartView *chartView = new QChartView(chart);
    QGridLayout *baseLayout = new QGridLayout();
    baseLayout->addWidget(chartView,1,1);
    ui->widget->setLayout(baseLayout);

    for(int i =0;i<60;i++){
        point.append(0);
    }
//    point<< QPointF(0, 6) << QPointF(1, 400) << QPointF(2, 20) << QPointF(3, 128) << QPointF(4, 926) << QPointF(5, 0)<<QPointF(6, 600);
//    point<<QPointF(0,800);

    for (int i = 0; i < 60; i++)
    {
        *series << QPointF(i, point.at(i));
    }
}

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

void MainWindow::onTime()
{

    point.insert(0, value11++);
    point.removeLast();
    series->clear();
    for (int i = 0; i < 60; i++)
    {
        *series << QPointF(i, point.at(i));
    }
}

.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QWidget>
#include <QtCharts/QChartView>
#include <QtCharts/QLineSeries>
#include <QtCharts/QCategoryAxis>
#include <QTimer>
QT_CHARTS_USE_NAMESPACE
namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
private slots:
    void onTime();

private:
    Ui::MainWindow *ui;
    QList<double> point;
    double value11;
    QLineSeries *series;
};

#endif // MAINWINDOW_H