drilldownchart.cpp Example File

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  #include "drilldownchart.h"
  #include <QtCharts/QBarCategoryAxis>

  QT_CHARTS_USE_NAMESPACE

  DrilldownChart::DrilldownChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
      : QChart(QChart::ChartTypeCartesian, parent, wFlags),
        m_currentSeries(0)
  {
  }

  void DrilldownChart::changeSeries(DrilldownBarSeries *series)
  {
      if (m_currentSeries) {
          removeSeries(m_currentSeries);
      }

      m_currentSeries = series;

      // Reset axis
      QBarCategoryAxis *axis = new QBarCategoryAxis();
      axis->append(m_currentSeries->categories());

      addSeries(series);

      createDefaultAxes();
      setAxisX(axis, series);
      axisY()->setTitleText("Crops");

      setTitle(series->name());
  }

  void DrilldownChart::handleClicked(int index, QBarSet *barset)
  {
      Q_UNUSED(barset)
      DrilldownBarSeries *series = static_cast<DrilldownBarSeries *>(sender());
      changeSeries(series->drilldownSeries(index));
  }

  #include "moc_drilldownchart.cpp"