Qt 5.6 | Qt QML | Writing QML Extensions with C++ | piechart.cpp Example File

Qt 5.6.3 Reference Documentation

# piechart.cpp Example File

tutorials/extending-qml/chapter5-listproperties/piechart.cpp

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      #include "piechart.h"
      #include "pieslice.h"

      PieChart::PieChart(QQuickItem *parent)
          : QQuickItem(parent)
      {
      }

      QString PieChart::name() const
      {
          return m_name;
      }

      void PieChart::setName(const QString &name)
      {
          m_name = name;
      }

      QQmlListProperty<PieSlice> PieChart::slices()
      {
          return QQmlListProperty<PieSlice>(this, 0, &PieChart::append_slice, 0, 0, 0);
      }

      void PieChart::append_slice(QQmlListProperty<PieSlice> *list, PieSlice *slice)
      {
          PieChart *chart = qobject_cast<PieChart *>(list->object);
          if (chart) {
              slice->setParentItem(chart);
              chart->m_slices.append(slice);
          }
      }