source: ntrip/trunk/BNC/qwt/qwt_sampling_thread.h@ 10270

Last change on this file since 10270 was 9383, checked in by stoecker, 4 years ago

update to qwt verion 6.1.1 to fix build with newer Qt5

File size: 1.4 KB
Line 
1/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10#ifndef _QWT_SAMPLING_THREAD_H_
11#define _QWT_SAMPLING_THREAD_H_
12
13#include "qwt_global.h"
14#include <qthread.h>
15
16/*!
17 \brief A thread collecting samples at regular intervals.
18
19 Continuous signals are converted into a discrete signal by
20 collecting samples at regular intervals. A discrete signal
21 can be displayed by a QwtPlotSeriesItem on a QwtPlot widget.
22
23 QwtSamplingThread starts a thread calling periodically sample(),
24 to collect and store ( or emit ) a single sample.
25
26 \sa QwtPlotCurve, QwtPlotSeriesItem
27*/
28class QWT_EXPORT QwtSamplingThread: public QThread
29{
30 Q_OBJECT
31
32public:
33 virtual ~QwtSamplingThread();
34
35 double interval() const;
36 double elapsed() const;
37
38public Q_SLOTS:
39 void setInterval( double interval );
40 void stop();
41
42protected:
43 explicit QwtSamplingThread( QObject *parent = NULL );
44
45 virtual void run();
46
47 /*!
48 Collect a sample
49
50 \param elapsed Time since the thread was started in milliseconds
51 */
52 virtual void sample( double elapsed ) = 0;
53
54private:
55 class PrivateData;
56 PrivateData *d_data;
57};
58
59#endif
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