Last change
on this file since 8804 was 8127, checked in by stoecker, 8 years ago |
update qwt and qwtpolar, many QT5 fixes (unfinished)
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File size:
1.1 KB
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1 | #ifndef _QWT_SAMPLING_THREAD_H_
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2 | #define _QWT_SAMPLING_THREAD_H_
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3 |
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4 | #include "qwt_global.h"
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5 | #include <qthread.h>
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6 |
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7 | /*!
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8 | \brief A thread collecting samples at regular intervals.
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9 |
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10 | Continuous signals are converted into a discrete signal by
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11 | collecting samples at regular intervals. A discrete signal
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12 | can be displayed by a QwtPlotSeriesItem on a QwtPlot widget.
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13 |
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14 | QwtSamplingThread starts a thread calling periodically sample(),
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15 | to collect and store ( or emit ) a single sample.
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16 |
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17 | \sa QwtPlotCurve, QwtPlotSeriesItem
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18 | */
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19 | class QWT_EXPORT QwtSamplingThread: public QThread
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20 | {
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21 | Q_OBJECT
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22 |
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23 | public:
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24 | virtual ~QwtSamplingThread();
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25 |
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26 | double interval() const;
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27 | double elapsed() const;
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28 |
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29 | public Q_SLOTS:
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30 | void setInterval( double interval );
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31 | void stop();
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32 |
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33 | protected:
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34 | explicit QwtSamplingThread( QObject *parent = NULL );
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35 |
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36 | virtual void run();
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37 |
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38 | /*!
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39 | Collect a sample
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40 |
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41 | \param elapsed Time since the thread was started in milliseconds
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42 | */
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43 | virtual void sample( double elapsed ) = 0;
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44 |
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45 | private:
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46 | class PrivateData;
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47 | PrivateData *d_data;
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48 | };
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49 |
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50 | #endif
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