drilldownchart.cpp Example File | Qt Charts 5.12.10

- Qt 5.12
- Qt Charts
- Piechart Drilldown Example
- drilldownchart.cpp Example File
- Qt Charts | Commercial or GPLv3

# drilldownchart.cpp Example File

piechartdrilldown/drilldownchart.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2016 The Qt Company Ltd.
     ** Contact: https://www.qt.io/licensing/
     **
     ** This file is part of the Qt Charts module of the Qt Toolkit.
     **
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     ** Alternatively, this file may be used under the terms of the GNU
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     #include "drilldownchart.h"
     #include "drilldownslice.h"

     QT_CHARTS_USE_NAMESPACE

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

     }

     DrilldownChart::~DrilldownChart()
     {

     }

     void DrilldownChart::changeSeries(QAbstractSeries *series)
     {
         // NOTE: if the series is owned by the chart it will be deleted
         // here the "window" owns the series...
         if (m_currentSeries)
             removeSeries(m_currentSeries);
         m_currentSeries = series;
         addSeries(series);
         setTitle(series->name());
     }

     void DrilldownChart::handleSliceClicked(QPieSlice *slice)
     {
         DrilldownSlice *drilldownSlice = static_cast<DrilldownSlice *>(slice);
         changeSeries(drilldownSlice->drilldownSeries());
     }

     #include "moc_drilldownchart.cpp"