include/wx/timer.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/timer.h
   3 // Purpose:     wxTimer, wxStopWatch and global time-related functions
   4 // Author:      Julian Smart (wxTimer), Sylvain Bougnoux (wxStopWatch)
   5 // Modified by: Vadim Zeitlin (wxTimerBase)
   6 //              Guillermo Rodriguez (global clean up)
   7 // Created:     04/01/98
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) wxWindows team
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_TIMER_H_BASE_
  14 #define _WX_TIMER_H_BASE_
  15
  16 #ifdef __GNUG__
  17     #pragma interface "timerbase.h"
  18 #endif
  19
  20 #include "wx/setup.h"
  21 #include "wx/object.h"
  22 #include "wx/longlong.h"
  23 #include "wx/event.h"
  24
  25 #if wxUSE_GUI && wxUSE_TIMER
  26
  27 // ----------------------------------------------------------------------------
  28 // wxTimer
  29 // ----------------------------------------------------------------------------
  30
  31 // the interface of wxTimer class
  32 class WXDLLEXPORT wxTimerBase : public wxObject
  33 {
  34 public:
  35     // ctors and initializers
  36     // ----------------------
  37
  38     // default: if you don't call SetOwner(), your only chance to get timer
  39     // notifications is to override Notify() in the derived class
  40     wxTimerBase() { Init(); SetOwner(NULL); }
  41
  42     // ctor which allows to avoid having to override Notify() in the derived
  43     // class: the owner will get timer notifications which can be handled with
  44     // EVT_TIMER
  45     wxTimerBase(wxEvtHandler *owner, int id = -1)
  46         { Init(); SetOwner(owner, id); }
  47
  48     // same as ctor above
  49     void SetOwner(wxEvtHandler *owner, int id = -1)
  50         { m_owner = owner; m_idTimer = id; }
  51
  52     virtual ~wxTimerBase();
  53
  54     // working with the timer
  55     // ----------------------
  56
  57     // start the timer: if milliseconds == -1, use the same value as for the
  58     // last Start()
  59     //
  60     // it is now valid to call Start() multiple times: this just restarts the
  61     // timer if it is already running
  62     virtual bool Start(int milliseconds = -1, bool oneShot = FALSE);
  63
  64     // stop the timer
  65     virtual void Stop() = 0;
  66
  67     // override this in your wxTimer-derived class if you want to process timer
  68     // messages in it, use non default ctor or SetOwner() otherwise
  69     virtual void Notify();
  70
  71     // getting info
  72     // ------------
  73
  74     // return TRUE if the timer is running
  75     virtual bool IsRunning() const = 0;
  76
  77     // get the (last) timer interval in the milliseconds
  78     int GetInterval() const { return m_milli; }
  79
  80     // return TRUE if the timer is one shot
  81     bool IsOneShot() const { return m_oneShot; }
  82
  83 #if WXWIN_COMPATIBILITY_2
  84     // deprecated functions
  85     int Interval() const { return GetInterval(); };
  86     bool OneShot() const { return IsOneShot(); }
  87 #endif // WXWIN_COMPATIBILITY_2
  88
  89 protected:
  90     // common part of all ctors
  91     void Init() { m_oneShot = FALSE; m_milli = 0; }
  92
  93     wxEvtHandler *m_owner;
  94     int     m_idTimer;
  95
  96     int     m_milli;        // the timer interval
  97     bool    m_oneShot;      // TRUE if one shot
  98 };
  99
 100 // ----------------------------------------------------------------------------
 101 // wxTimer itself
 102 // ----------------------------------------------------------------------------
 103
 104 #if defined(__WXMSW__)
 105     #include "wx/msw/timer.h"
 106 #elif defined(__WXMOTIF__)
 107     #include "wx/motif/timer.h"
 108 #elif defined(__WXGTK__)
 109     #include "wx/gtk/timer.h"
 110 #elif defined(__WXMGL__)
 111     #include "wx/mgl/timer.h"
 112 #elif defined(__WXMAC__)
 113     #include "wx/mac/timer.h"
 114 #elif defined(__WXPM__)
 115     #include "wx/os2/timer.h"
 116 #elif defined(__WXSTUBS__)
 117     #include "wx/stubs/timer.h"
 118 #endif
 119
 120 // ----------------------------------------------------------------------------
 121 // wxTimerRunner: starts the timer in its ctor, stops in the dtor
 122 // ----------------------------------------------------------------------------
 123
 124 class WXDLLEXPORT wxTimerRunner
 125 {
 126 public:
 127     wxTimerRunner(wxTimer& timer) : m_timer(timer) { }
 128     wxTimerRunner(wxTimer& timer, int milli, bool oneShot = FALSE)
 129         : m_timer(timer)
 130     {
 131         m_timer.Start(milli, oneShot);
 132     }
 133
 134     void Start(int milli, bool oneShot = FALSE)
 135     {
 136         m_timer.Start(milli, oneShot);
 137     }
 138
 139     ~wxTimerRunner()
 140     {
 141         if ( m_timer.IsRunning() )
 142         {
 143             m_timer.Stop();
 144         }
 145     }
 146
 147 private:
 148     wxTimer& m_timer;
 149 };
 150
 151 // ----------------------------------------------------------------------------
 152 // wxTimerEvent
 153 // ----------------------------------------------------------------------------
 154
 155 class WXDLLEXPORT wxTimerEvent : public wxEvent
 156 {
 157 public:
 158     wxTimerEvent(int id = 0, int interval = 0) : wxEvent(id)
 159     {
 160         m_eventType = wxEVT_TIMER;
 161
 162         m_interval = interval;
 163     }
 164
 165     // accessors
 166     int GetInterval() const { return m_interval; }
 167
 168     // implement the base class pure virtual
 169     virtual wxEvent *Clone() const { return new wxTimerEvent(*this); }
 170
 171 private:
 172     int m_interval;
 173
 174     DECLARE_DYNAMIC_CLASS(wxTimerEvent)
 175 };
 176
 177 typedef void (wxEvtHandler::*wxTimerEventFunction)(wxTimerEvent&);
 178
 179 #define EVT_TIMER(id, func) \
 180     DECLARE_EVENT_TABLE_ENTRY( wxEVT_TIMER, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTimerEventFunction) & func, NULL),
 181
 182 #endif // wxUSE_GUI && wxUSE_TIMER
 183
 184 // ----------------------------------------------------------------------------
 185 // wxStopWatch: measure time intervals with up to 1ms resolution
 186 // ----------------------------------------------------------------------------
 187
 188 #if wxUSE_STOPWATCH
 189
 190 class WXDLLEXPORT wxStopWatch
 191 {
 192 public:
 193     // ctor starts the stop watch
 194     wxStopWatch()        { Start(); }
 195     void Start(long t = 0);
 196     void Pause()  { m_pause = GetElapsedTime(); }
 197     void Resume() { Start(m_pause); }
 198
 199     // get elapsed time since the last Start() or Pause() in milliseconds
 200     long Time() const;
 201
 202 protected:
 203     // returns the elapsed time since t0
 204     long GetElapsedTime() const;
 205
 206 private:
 207     wxLongLong m_t0;      // the time of the last Start()
 208     long m_pause;         // the time of the last Pause() or 0
 209 };
 210
 211 #endif // wxUSE_STOPWATCH
 212
 213 #if wxUSE_LONGLONG
 214
 215 // Starts a global timer
 216 // -- DEPRECATED: use wxStopWatch instead
 217 void WXDLLEXPORT wxStartTimer();
 218
 219 // Gets elapsed milliseconds since last wxStartTimer or wxGetElapsedTime
 220 // -- DEPRECATED: use wxStopWatch instead
 221 long WXDLLEXPORT wxGetElapsedTime(bool resetTimer = TRUE);
 222
 223 #endif // wxUSE_LONGLONG
 224
 225 // ----------------------------------------------------------------------------
 226 // global time functions
 227 // ----------------------------------------------------------------------------
 228
 229 // Get number of seconds since local time 00:00:00 Jan 1st 1970.
 230 extern long WXDLLEXPORT wxGetLocalTime();
 231
 232 // Get number of seconds since GMT 00:00:00, Jan 1st 1970.
 233 extern long WXDLLEXPORT wxGetUTCTime();
 234
 235 #if wxUSE_LONGLONG
 236 // Get number of milliseconds since local time 00:00:00 Jan 1st 1970
 237 extern wxLongLong WXDLLEXPORT wxGetLocalTimeMillis();
 238 #endif // wxUSE_LONGLONG
 239
 240 #define wxGetCurrentTime() wxGetLocalTime()
 241
 242 #endif
 243     // _WX_TIMER_H_BASE_