chartview.cpp Example File

scatterchart/chartview.cpp
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 #include "chartview.h"
 #include <QtCharts/QScatterSeries>
 #include <QtCharts/QLegendMarker>
 #include <QtGui/QImage>
 #include <QtGui/QPainter>
 #include <QtCore/QtMath>

 ChartView::ChartView(QWidget *parent) :
     QChartView(new QChart(), parent)
 {
     QScatterSeries *series0 = new QScatterSeries();
     series0->setName("scatter1");
     series0->setMarkerShape(QScatterSeries::MarkerShapeCircle);
     series0->setMarkerSize(15.0);

     QScatterSeries *series1 = new QScatterSeries();
     series1->setName("scatter2");
     series1->setMarkerShape(QScatterSeries::MarkerShapeRectangle);
     series1->setMarkerSize(20.0);

     QScatterSeries *series2 = new QScatterSeries();
     series2->setName("scatter3");
     series2->setMarkerShape(QScatterSeries::MarkerShapeRectangle);
     series2->setMarkerSize(30.0);

     series0->append(0, 6);
     series0->append(2, 4);
     series0->append(3, 8);
     series0->append(7, 4);
     series0->append(10, 5);

     *series1 << QPointF(1, 1) << QPointF(3, 3) << QPointF(7, 6) << QPointF(8, 3) << QPointF(10, 2);
     *series2 << QPointF(1, 5) << QPointF(4, 6) << QPointF(6, 3) << QPointF(9, 5);

     QPainterPath starPath;
     starPath.moveTo(28, 15);
     for (int i = 1; i < 5; ++i) {
         starPath.lineTo(14 + 14 * qCos(0.8 * i * M_PI),
                         15 + 14 * qSin(0.8 * i * M_PI));
     }
     starPath.closeSubpath();

     QImage star(30, 30, QImage::Format_ARGB32);
     star.fill(Qt::transparent);

     QPainter painter(&star);
     painter.setRenderHint(QPainter::Antialiasing);
     painter.setPen(QRgb(0xf6a625));
     painter.setBrush(painter.pen().color());
     painter.drawPath(starPath);

     series2->setBrush(star);
     series2->setPen(QColor(Qt::transparent));

     setRenderHint(QPainter::Antialiasing);
     chart()->addSeries(series0);
     chart()->addSeries(series1);
     chart()->addSeries(series2);

     chart()->setTitle("Simple scatterchart example");
     chart()->createDefaultAxes();
     chart()->setDropShadowEnabled(false);

     chart()->legend()->setMarkerShape(QLegend::MarkerShapeFromSeries);
 }