chart.cpp
72 lines
| 1.9 KiB
| text/x-c
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CppLexer
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r830 | /**************************************************************************** | ||
** | ||||
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r2433 | ** Copyright (C) 2013 Digia Plc | ||
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r830 | ** 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 | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
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r840 | #include "chart.h" | ||
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r1541 | #include <QAbstractAxis> | ||
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r599 | #include <QSplineSeries> | ||
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r1804 | #include <QValueAxis> | ||
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r599 | #include <QTime> | ||
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r1648 | #include <QDebug> | ||
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r599 | |||
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r1663 | Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags): | ||
QChart(parent, wFlags), | ||||
m_series(0), | ||||
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r1804 | m_axis(new QValueAxis), | ||
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r1663 | m_step(0), | ||
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r1648 | m_x(5), | ||
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r840 | m_y(1) | ||
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r599 | { | ||
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r977 | qsrand((uint) QTime::currentTime().msec()); | ||
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r599 | |||
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r840 | QObject::connect(&m_timer, SIGNAL(timeout()), this, SLOT(handleTimeout())); | ||
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r705 | m_timer.setInterval(1000); | ||
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r599 | |||
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r977 | m_series = new QSplineSeries(this); | ||
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r705 | QPen green(Qt::red); | ||
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r599 | green.setWidth(3); | ||
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r977 | m_series->setPen(green); | ||
m_series->append(m_x, m_y); | ||||
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r599 | |||
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r977 | addSeries(m_series); | ||
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r1585 | createDefaultAxes(); | ||
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r2099 | setAxisX(m_axis, m_series); | ||
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r1807 | m_axis->setTickCount(5); | ||
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r1648 | axisX()->setRange(0, 10); | ||
axisY()->setRange(-5, 10); | ||||
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r977 | |||
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r599 | m_timer.start(); | ||
} | ||||
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r840 | Chart::~Chart() | ||
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r599 | { | ||
} | ||||
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r840 | void Chart::handleTimeout() | ||
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r599 | { | ||
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r2099 | qreal x = plotArea().width() / m_axis->tickCount(); | ||
qreal y = (m_axis->max() - m_axis->min()) / m_axis->tickCount(); | ||||
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r1648 | m_x += y; | ||
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r599 | m_y = qrand() % 5 - 2.5; | ||
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r977 | m_series->append(m_x, m_y); | ||
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r2099 | scroll(x, 0); | ||
if (m_x == 100) | ||||
m_timer.stop(); | ||||
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r599 | } | ||