Testbed
// Copyright (C) 2023 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #include "custombarseries.h" #include <QRandomGenerator> // Data contains 3 sets const int SET_COUNT = 3; CustomBarSeries::CustomBarSeries(QBarSeries *parent) : QBarSeries{ parent } { // Initialize bar sets for (int i = 0; i < SET_COUNT; i++) { m_sets.append(new QBarSet(this)); m_sets[i]->append({0, 0}); append(m_sets[i]); } updateData(); // Update data with a timer connect(&m_updateTimer, &QTimer::timeout, this, &CustomBarSeries::updateData); m_updateTimer.start(2000); } void CustomBarSeries::updateData() { const int maxValue = 30; for (int i = 0; i < SET_COUNT; i++) { m_sets[i]->replace(0, QRandomGenerator::global()->generateDouble() * maxValue); m_sets[i]->replace(1, QRandomGenerator::global()->generateDouble() * maxValue); } }