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[wxWidgets.git] / include / wx / stopwatch.h
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1/////////////////////////////////////////////////////////////////////////////
2// Name: wx/stopwatch.h
3// Purpose: wxStopWatch and global time-related functions
4// Author: Julian Smart (wxTimer), Sylvain Bougnoux (wxStopWatch)
5// Created: 26.06.03 (extracted from wx/timer.h)
6// RCS-ID: $Id$
7// Copyright: (c) 1998-2003 wxWindows team
8// Licence: wxWindows licence
9/////////////////////////////////////////////////////////////////////////////
10
11#ifndef _WX_STOPWATCH_H_
12#define _WX_STOPWATCH_H_
13//
14// ----------------------------------------------------------------------------
15// wxStopWatch: measure time intervals with up to 1ms resolution
16// ----------------------------------------------------------------------------
17
18#if wxUSE_STOPWATCH
19
bddd7a8d 20class WXDLLIMPEXP_BASE wxStopWatch
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21{
22public:
23 // ctor starts the stop watch
24 wxStopWatch() { m_pauseCount = 0; Start(); }
25
26 // start the stop watch at the moment t0
27 void Start(long t0 = 0);
28
29 // pause the stop watch
30 void Pause()
31 {
32 if ( !m_pauseCount++ )
33 m_pause = GetElapsedTime();
34 }
35
36 // resume it
37 void Resume()
38 {
39 wxASSERT_MSG( m_pauseCount > 0,
40 _T("Resuming stop watch which is not paused") );
41
42 if ( !--m_pauseCount )
43 Start(m_pause);
44 }
45
46 // get elapsed time since the last Start() in milliseconds
47 long Time() const;
48
49protected:
50 // returns the elapsed time since t0
51 long GetElapsedTime() const;
52
53private:
54 // the time of the last Start()
55 wxLongLong m_t0;
56
57 // the time of the last Pause() (only valid if m_pauseCount > 0)
58 long m_pause;
59
60 // if > 0, the stop watch is paused, otherwise it is running
61 int m_pauseCount;
62};
63
64#endif // wxUSE_STOPWATCH
65
66#if wxUSE_LONGLONG
67
68// Starts a global timer
69// -- DEPRECATED: use wxStopWatch instead
bddd7a8d 70void WXDLLIMPEXP_BASE wxStartTimer();
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71
72// Gets elapsed milliseconds since last wxStartTimer or wxGetElapsedTime
73// -- DEPRECATED: use wxStopWatch instead
bddd7a8d 74long WXDLLIMPEXP_BASE wxGetElapsedTime(bool resetTimer = TRUE);
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75
76#endif // wxUSE_LONGLONG
77
78// ----------------------------------------------------------------------------
79// global time functions
80// ----------------------------------------------------------------------------
81
82// Get number of seconds since local time 00:00:00 Jan 1st 1970.
bddd7a8d 83extern long WXDLLIMPEXP_BASE wxGetLocalTime();
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84
85// Get number of seconds since GMT 00:00:00, Jan 1st 1970.
bddd7a8d 86extern long WXDLLIMPEXP_BASE wxGetUTCTime();
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87
88#if wxUSE_LONGLONG
89// Get number of milliseconds since local time 00:00:00 Jan 1st 1970
bddd7a8d 90extern wxLongLong WXDLLIMPEXP_BASE wxGetLocalTimeMillis();
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91#endif // wxUSE_LONGLONG
92
93#define wxGetCurrentTime() wxGetLocalTime()
94
95#endif // _WX_STOPWATCH_H_
96