main.cpp Example File

customchart/main.cpp
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 #include <QtWidgets/QApplication>
 #include <QtWidgets/QMainWindow>
 #include <QtCharts/QChartView>
 #include <QtCharts/QLineSeries>
 #include <QtCharts/QCategoryAxis>

 QT_CHARTS_USE_NAMESPACE

 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);

     QLineSeries *series = new QLineSeries();
     *series << QPointF(0, 6) << QPointF(9, 4) << QPointF(15, 20) << QPointF(25, 12) << QPointF(29, 26);
     QChart *chart = new QChart();
     chart->legend()->hide();
     chart->addSeries(series);

     // Customize series
     QPen pen(QRgb(0xfdb157));
     pen.setWidth(5);
     series->setPen(pen);

     // Customize chart title
     QFont font;
     font.setPixelSize(18);
     chart->setTitleFont(font);
     chart->setTitleBrush(QBrush(Qt::white));
     chart->setTitle("Customchart example");

     // Customize chart background
     QLinearGradient backgroundGradient;
     backgroundGradient.setStart(QPointF(0, 0));
     backgroundGradient.setFinalStop(QPointF(0, 1));
     backgroundGradient.setColorAt(0.0, QRgb(0xd2d0d1));
     backgroundGradient.setColorAt(1.0, QRgb(0x4c4547));
     backgroundGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
     chart->setBackgroundBrush(backgroundGradient);

     // Customize plot area background
     QLinearGradient plotAreaGradient;
     plotAreaGradient.setStart(QPointF(0, 1));
     plotAreaGradient.setFinalStop(QPointF(1, 0));
     plotAreaGradient.setColorAt(0.0, QRgb(0x555555));
     plotAreaGradient.setColorAt(1.0, QRgb(0x55aa55));
     plotAreaGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
     chart->setPlotAreaBackgroundBrush(plotAreaGradient);
     chart->setPlotAreaBackgroundVisible(true);

     QCategoryAxis *axisX = new QCategoryAxis();
     QCategoryAxis *axisY = new QCategoryAxis();

     // Customize axis label font
     QFont labelsFont;
     labelsFont.setPixelSize(12);
     axisX->setLabelsFont(labelsFont);
     axisY->setLabelsFont(labelsFont);

     // Customize axis colors
     QPen axisPen(QRgb(0xd18952));
     axisPen.setWidth(2);
     axisX->setLinePen(axisPen);
     axisY->setLinePen(axisPen);

     // Customize axis label colors
     QBrush axisBrush(Qt::white);
     axisX->setLabelsBrush(axisBrush);
     axisY->setLabelsBrush(axisBrush);

     // Customize grid lines and shades
     axisX->setGridLineVisible(false);
     axisY->setGridLineVisible(false);
     axisY->setShadesPen(Qt::NoPen);
     axisY->setShadesBrush(QBrush(QColor(0x99, 0xcc, 0xcc, 0x55)));
     axisY->setShadesVisible(true);

     axisX->append("low", 10);
     axisX->append("optimal", 20);
     axisX->append("high", 30);
     axisX->setRange(0, 30);

     axisY->append("slow", 10);
     axisY->append("med", 20);
     axisY->append("fast", 30);
     axisY->setRange(0, 30);

     chart->addAxis(axisX, Qt::AlignBottom);
     chart->addAxis(axisY, Qt::AlignLeft);
     series->attachAxis(axisX);
     series->attachAxis(axisY);

     QChartView *chartView = new QChartView(chart);
     chartView->setRenderHint(QPainter::Antialiasing);

     QMainWindow window;
     window.setCentralWidget(chartView);
     window.resize(400, 300);
     window.show();

     return a.exec();
 }