|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 <QAxis>
|
|
|
#include <QSplineSeries>
|
|
|
#include <QTime>
|
|
|
|
|
|
Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
|
|
|
:QChart(parent, wFlags),
|
|
|
m_step(1),
|
|
|
m_x(0),
|
|
|
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);
|
|
|
|
|
|
axisY()->setRange(-5, 5);
|
|
|
axisX()->setRange(-9, 1);
|
|
|
axisX()->setTicksCount(11);
|
|
|
|
|
|
m_timer.start();
|
|
|
}
|
|
|
|
|
|
Chart::~Chart()
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
void Chart::handleTimeout()
|
|
|
{
|
|
|
m_x += m_step;
|
|
|
m_y = qrand() % 5 - 2.5;
|
|
|
m_series->append(m_x, m_y);
|
|
|
scrollRight();
|
|
|
if(m_x==100) m_timer.stop();
|
|
|
}
|
|
|
|
