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#include "chartview.h"
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#include <qlinechartseries.h>
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#include <QTime>
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ChartView::ChartView(QWidget* parent):QChartView(parent),
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m_index(0)
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{
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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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QTime now = QTime::currentTime();
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qsrand((uint)now.msec());
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QLineChartSeries* series0 = new QLineChartSeries();
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QPen blue(Qt::blue);
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blue.setWidth(3);
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series0->setPen(blue);
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QLineChartSeries* series1 = new QLineChartSeries();
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QPen red(Qt::red);
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red.setWidth(3);
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series1->setPen(red);
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QLineChartSeries* series2 = new QLineChartSeries();
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QPen green(Qt::green);
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green.setWidth(3);
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series2->setPen(green);
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int numPoints = 10;
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for (int x = 0; x <= numPoints; ++x) {
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series0->add(x, qrand() % 100);
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series1->add(x, qrand() % 100);
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series2->add(x, qrand() % 100);
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}
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addSeries(series0);
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m_series<<series0;
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m_series<<series1;
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m_series<<series2;
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m_timer.start();
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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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removeSeries(m_series.at(m_index));
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qDeleteAll(m_series);
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}
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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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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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addSeries(m_series.at(m_index));
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}
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