include/wx/stopwatch.h

   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 wxWidgets team
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_STOPWATCH_H_
  12 #define _WX_STOPWATCH_H_
  13
  14 #include "wx/longlong.h"
  15
  16 // ----------------------------------------------------------------------------
  17 // wxStopWatch: measure time intervals with up to 1ms resolution
  18 // ----------------------------------------------------------------------------
  19
  20 #if wxUSE_STOPWATCH
  21
  22 class WXDLLIMPEXP_BASE wxStopWatch
  23 {
  24 public:
  25     // ctor starts the stop watch
  26     wxStopWatch() { m_pauseCount = 0; Start(); }
  27
  28     // start the stop watch at the moment t0
  29     void Start(long t0 = 0);
  30
  31     // pause the stop watch
  32     void Pause()
  33     {
  34         if ( !m_pauseCount++ )
  35             m_pause = GetElapsedTime();
  36     }
  37
  38     // resume it
  39     void Resume()
  40     {
  41         wxASSERT_MSG( m_pauseCount > 0,
  42                       _T("Resuming stop watch which is not paused") );
  43
  44         if ( !--m_pauseCount )
  45             Start(m_pause);
  46     }
  47
  48     // get elapsed time since the last Start() in milliseconds
  49     long Time() const;
  50
  51 protected:
  52     // returns the elapsed time since t0
  53     long GetElapsedTime() const;
  54
  55 private:
  56     // the time of the last Start()
  57     wxLongLong m_t0;
  58
  59     // the time of the last Pause() (only valid if m_pauseCount > 0)
  60     long m_pause;
  61
  62     // if > 0, the stop watch is paused, otherwise it is running
  63     int m_pauseCount;
  64 };
  65
  66 #endif // wxUSE_STOPWATCH
  67
  68 #if wxUSE_LONGLONG
  69
  70 // Starts a global timer
  71 // -- DEPRECATED: use wxStopWatch instead
  72 void WXDLLIMPEXP_BASE wxStartTimer();
  73
  74 // Gets elapsed milliseconds since last wxStartTimer or wxGetElapsedTime
  75 // -- DEPRECATED: use wxStopWatch instead
  76 long WXDLLIMPEXP_BASE wxGetElapsedTime(bool resetTimer = true);
  77
  78 #endif // wxUSE_LONGLONG
  79
  80 // ----------------------------------------------------------------------------
  81 // global time functions
  82 // ----------------------------------------------------------------------------
  83
  84 // Get number of seconds since local time 00:00:00 Jan 1st 1970.
  85 extern long WXDLLIMPEXP_BASE wxGetLocalTime();
  86
  87 // Get number of seconds since GMT 00:00:00, Jan 1st 1970.
  88 extern long WXDLLIMPEXP_BASE wxGetUTCTime();
  89
  90 #if wxUSE_LONGLONG
  91 // Get number of milliseconds since local time 00:00:00 Jan 1st 1970
  92 extern wxLongLong WXDLLIMPEXP_BASE wxGetLocalTimeMillis();
  93 #endif // wxUSE_LONGLONG
  94
  95 #define wxGetCurrentTime() wxGetLocalTime()
  96
  97 #endif // _WX_STOPWATCH_H_
  98