/**************************************************************************** ** ** Copyright (C) 2012 Digia Plc ** All rights reserved. ** For any questions to Digia, please use contact form at http://qt.digia.com ** ** This file is part of the Qt Commercial Charts Add-on. ** ** $QT_BEGIN_LICENSE$ ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Digia. ** ** If you have questions regarding the use of this file, please use ** contact form at http://qt.digia.com ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "chart.h" #include #include #include #include #include Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags): QChart(parent, wFlags), m_series(0), m_axis(new QValueAxis), m_step(0), m_x(5), m_y(1) { qsrand((uint) QTime::currentTime().msec()); QObject::connect(&m_timer, SIGNAL(timeout()), this, SLOT(handleTimeout())); m_timer.setInterval(1000); m_series = new QSplineSeries(this); QPen green(Qt::red); green.setWidth(3); m_series->setPen(green); m_series->append(m_x, m_y); addSeries(m_series); createDefaultAxes(); setAxisX(m_axis,m_series); m_axis->setTickCount(5); axisX()->setRange(0, 10); axisY()->setRange(-5, 10); m_timer.start(); } Chart::~Chart() { } void Chart::handleTimeout() { qreal x = plotArea().width()/m_axis->tickCount(); qreal y =(m_axis->max() - m_axis->min())/m_axis->tickCount(); m_x += y; m_y = qrand() % 5 - 2.5; m_series->append(m_x, m_y); scroll(x,0); if(m_x==100) m_timer.stop(); }