Russian Qt Forum

#include "chart.h"
#include "ui_chart.h"

chart::chart(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::chart)
{
    ui->setupUi(this);

    //qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));

    series = new QLineSeries();
    series->append(momentInTime.toMSecsSinceEpoch(),0);
    m_chart = new QChart();
    m_chart->addSeries(series);
    m_chart->legend()->hide();
    m_chart->setTitle("Sunspots count (by Space Weather Prediction Center)");
    //![3]

    //![4]
    axisX = new QDateTimeAxis;
    axisX->setTickCount(10);
    //axisX->setFormat("MMM yyyy");
    axisX->setTitleText("Date");
    m_chart->addAxis(axisX, Qt::AlignBottom);
    series->attachAxis(axisX);

    axisY = new QValueAxis;
    axisY->setLabelFormat("%i");
    axisY->setTitleText("Sunspots count");
    m_chart->addAxis(axisY, Qt::AlignLeft);
    series->attachAxis(axisY);
    //![4]

    //![5]
    chartView = new QChartView(m_chart);
    chartView->setRenderHint(QPainter::Antialiasing);
    ui->gridLayout->addWidget(chartView);

}

chart::~chart()
{
    delete ui;
}

void chart::on_pushButton_clicked()
{
    m_chart->removeSeries(series);
    series->append(momentInTime.toMSecsSinceEpoch(), ui->doubleSpinBox->value());
    m_chart->addSeries(series);
}

void MainWindow::on_pushButton_clicked()
{
   QDateTime minX = axisX->min();
   QDateTime maxX = axisX->max();

   qreal minY = axisY->min();
   qreal maxY = axisY->max();

   QDateTime x = QDateTime::currentDateTime();
   qreal y = ui->doubleSpinBox->value();

   axisX->setRange(minX, x > maxX ? x : maxX);
   axisY->setRange(minY, y > maxY ? y : maxY);
   series->append(x.toMSecsSinceEpoch(), y);
}

connect(series, SIGNAL(pointAdded(int)), chartView, SLOT(update()));

bool ChartMonitoring::setData(QString name, float data)
{
    QDateTime minX = axisXX->min();
    QDateTime maxX = axisXX->max();

    qreal minY = axisYY.value(name)->min();
    qreal maxY = axisYY.value(name)->max();

    QDateTime x = QDateTime::currentDateTime();
    qreal y = data;
    QPointF pointer;

     if(point.value(name)==maxPoint) {
        reng = maxX.toMSecsSinceEpoch()-minX.toMSecsSinceEpoch();
        //qDebug() <<reng;
     }

     if(point.value(name)>=maxPoint) {
         timeRenge.setMSecsSinceEpoch(x.toMSecsSinceEpoch()-reng);

         axisXX->setRange(timeRenge, x>maxX ? x : maxX);
         for(int i=0; i<maxPoint-1; i++){
            pointer = serias.value(name)->at(i+1);
            serias.value(name)->replace(i, pointer);
         }
         pointer.setX(x.toMSecsSinceEpoch());
         pointer.setY(y);
         serias.value(name)->replace(maxPoint-1, pointer);
     }
    else {
         axisXX->setRange(minX, x>maxX ? x : maxX);
         serias.value(name)->append(x.toMSecsSinceEpoch(), y);
         point[name]++;

     }

     qDebug() << serias.value(name)->count();
}