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++ // Copyright (C) 2026 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "piesimulator.h"
++ #include <QPieSlice>
++
++ PieSimulator::PieSimulator(QObject *parent) : DataSimulator(parent)
++ {
++ connect(this, &DataSimulator::simulateDataCompleted, this, &PieSimulator::generatePieSlices);
++ }
++
++ void PieSimulator::addSeries(QPieSeries *series)
++ {
++ m_seriesList.append(series);
++ if (hasData())
++ generatePieSlices();
++ }
++
++ void PieSimulator::generatePieSlices()
++ {
++ if (m_seriesList.isEmpty())
++ return;
++
++ const auto values = data();
++
++ // Create all slices first
++ for (QPieSeries *series : std::as_const(m_seriesList)) {
++ QList<QPieSlice *> slices;
++ slices.reserve(values.size());
++
++ for (const auto &value : values) {
++ auto *slice = new QPieSlice();
++ slice->setValue(value.toDouble());
++ slices.append(slice);
++ }
++
++ series->clear();
++ // Append all the slices in one go
++ series->append(slices);
++ }
++ }