Donut Chart Breakdown Example

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#include "mainslice.h"

QT_CHARTS_USE_NAMESPACE

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

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

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

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

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

#include "moc_mainslice.cpp"