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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "dynamicsplinewidget.h"
#include <QChart>
#include <QChartView>
#include <QRandomGenerator>
#include <QSplineSeries>
#include <QValueAxis>
DynamicSplineWidget::DynamicSplineWidget(QWidget *parent)
: ContentWidget(parent)
{
auto chart = new QChart;
chart->setTitle("Dynamic Spline Chart");
chart->legend()->hide();
chart->setAnimationOptions(QChart::AllAnimations);
m_axisX = new QValueAxis;
m_axisY = new QValueAxis;
QObject::connect(&m_timer, &QTimer::timeout, this, &DynamicSplineWidget::handleTimeout);
m_timer.setInterval(1000);
m_series = new QSplineSeries;
QPen green(Qt::red);
green.setWidth(3);
m_series->setPen(green);
m_series->append(m_x, m_y);
chart->addSeries(m_series);
chart->addAxis(m_axisX,Qt::AlignBottom);
chart->addAxis(m_axisY,Qt::AlignLeft);
m_series->attachAxis(m_axisX);
m_series->attachAxis(m_axisY);
m_axisX->setTickCount(5);
m_axisX->setRange(0, 10);
m_axisY->setRange(-5, 10);
createDefaultChartView(chart);
m_timer.start();
}
void DynamicSplineWidget::handleTimeout()
{
qreal x = defaultChartView()->chart()->plotArea().width() / m_axisX->tickCount();
qreal y = (m_axisX->max() - m_axisX->min()) / m_axisX->tickCount();
m_x += y;
m_y = QRandomGenerator::global()->bounded(5) - 2.5;
m_series->append(m_x, m_y);
defaultChartView()->chart()->scroll(x, 0);
if (m_x >= 100)
m_timer.stop();
}
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