QWT API (中文) 7.0.1
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qwt_sampling_thread.h
1/******************************************************************************
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 * Modified by ChenZongYan in 2024 <czy.t@163.com>
10 * Summary of major modifications (see ChangeLog.md for full history):
11 * 1. CMake build system & C++11 throughout.
12 * 2. Core panner/ zoomer refactored:
13 * - QwtPanner → QwtCachePanner (pixmap-cache version)
14 * - New real-time QwtPlotPanner derived from QwtPicker.
15 * 3. Zoomer supports multi-axis.
16 * 4. Parasite-plot framework:
17 * - QwtFigure, QwtPlotParasiteLayout, QwtPlotTransparentCanvas,
18 * - QwtPlotScaleEventDispatcher, built-in pan/zoom on axis.
19 * 5. New picker: QwtPlotSeriesDataPicker (works with date axis).
20 * 6. Raster & color-map extensions:
21 * - QwtGridRasterData (2-D table + interpolation)
22 * - QwtLinearColorMap::stopColors(), stopPos() API rename.
23 * 7. Bar-chart: expose pen/brush control.
24 * 8. Amalgamated build: single QwtPlot.h / QwtPlot.cpp pair in src-amalgamate.
25 *****************************************************************************/
26
27#ifndef QWT_SAMPLING_THREAD_H
28#define QWT_SAMPLING_THREAD_H
29
30#include "qwt_global.h"
31#include <qthread.h>
32
57class QWT_EXPORT QwtSamplingThread : public QThread
58{
59 Q_OBJECT
60
61public:
62 // Destructor
63 virtual ~QwtSamplingThread();
64
65 // Get the interval in seconds
66 double interval() const;
67 // Get the elapsed time since the thread was started in seconds
68 double elapsed() const;
69
70public Q_SLOTS:
71 // Set the interval in seconds
72 void setInterval(double interval);
73 // Stop the thread
74 void stop();
75
76protected:
78 explicit QwtSamplingThread(QObject* parent = nullptr);
79
81 virtual void run() override;
82
100 virtual void sample(double elapsed) = 0;
101
102private:
103 class PrivateData;
104 PrivateData* m_data;
105};
106
107#endif
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Definition qwt_sampling_thread.h:58
virtual void sample(double elapsed)=0
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