drilldownchart.h Example File

piechartdrilldown/drilldownchart.h

  /******************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the Qt Charts module.
  **
  ** $QT_BEGIN_LICENSE:COMM$
  **
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
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  #ifndef DRILLDOWNCHART_H
  #define DRILLDOWNCHART_H

  #include <QtCharts/QChart>

  QT_CHARTS_BEGIN_NAMESPACE
  class QAbstractSeries;
  class QPieSlice;
  QT_CHARTS_END_NAMESPACE

  QT_CHARTS_USE_NAMESPACE

  class DrilldownChart : public QChart
  {
      Q_OBJECT
  public:
      explicit DrilldownChart(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0);
      ~DrilldownChart();
      void changeSeries(QAbstractSeries *series);

  public Q_SLOTS:
      void handleSliceClicked(QPieSlice *slice);

  private:
      QAbstractSeries *m_currentSeries;
  };

  #endif // DRILLDOWNCHART_H