qt-everywhere-src-5.14.1/qtcharts/examples/charts/donutbreakdown/mainslice.cpp

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** This file is part of the Qt Charts module of the Qt Toolkit.
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#include "mainslice.h"

QT_CHARTS_USE_NAMESPACE

//![1]
MainSlice::MainSlice(QPieSeries *breakdownSeries, QObject *parent)
    : QPieSlice(parent),
      m_breakdownSeries(breakdownSeries)
{
    connect(this, &MainSlice::percentageChanged, this, &MainSlice::updateLabel);
}
//![1]

QPieSeries *MainSlice::breakdownSeries() const
{
    return m_breakdownSeries;
}

void MainSlice::setName(QString name)
{
    m_name = name;
}

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

//![2]
void MainSlice::updateLabel()
{
    this->setLabel(QString("%1 %2%").arg(m_name).arg(percentage() * 100, 0, 'f', 2));
}
//![2]

#include "moc_mainslice.cpp"