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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "chartview.h"
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#include <QLineSeries>
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#include <QScatterSeries>
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#include <QSplineSeries>
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#include <QAreaSeries>
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#include <QTime>
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ChartView::ChartView(QChart* chart,QWidget* parent):
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QChartView(chart,parent),
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m_index(-1),
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m_chart(chart)
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{
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m_chart->setTitle("Charts presenter");
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m_chart->setDropShadowEnabled(false);
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QObject::connect(&m_timer,SIGNAL(timeout()),this,SLOT(handleTimeout()));
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m_timer.setInterval(3000);
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//![1]
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QLineSeries* series0 = new QLineSeries();
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series0->setName("line");
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QScatterSeries* series1 = new QScatterSeries();
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series1->setName("scatter");
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QSplineSeries* series2 = new QSplineSeries();
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series2->setName("spline");
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QAreaSeries* series3 = new QAreaSeries(series0);
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series3->setName("area");
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//![1]
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//![2]
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int numPoints = 10;
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for (int x = 0; x <= numPoints; ++x) {
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qreal y = qrand() % 100;
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series0->append(x,y);
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series1->append(x,y);
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series2->append(x,y);
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}
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//![2]
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//![3]
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m_series<<series0;
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m_titles<< m_chart->title()+": LineChart";
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m_series<<series1;
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m_titles<< m_chart->title()+": ScatterChart";
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m_series<<series2;
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m_titles<< m_chart->title()+": SplineChart";
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m_series<<series3;
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m_titles<< m_chart->title()+": AreaChart";
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//![3]
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m_timer.start();
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handleTimeout();
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}
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ChartView::~ChartView()
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{
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if(m_series.size() == 0) return;
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m_chart->removeSeries(m_series.at(m_index));
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m_series.removeLast(); //remove QAreaSeries instance since they will be deleted when QLineSeries instance is gone
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qDeleteAll(m_series);
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}
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//![4]
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void ChartView::handleTimeout()
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{
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if(m_series.size() == 0) return;
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if(m_index >= 0)
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m_chart->removeSeries(m_series.at(m_index));
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m_index++;
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m_index = m_index % m_series.size();
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m_chart->addSeries(m_series.at(m_index));
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m_chart->setTitle(m_titles.at(m_index));
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m_chart->createDefaultAxes();
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}
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//![4]
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