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 licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_TIMER_H_BASE_
  14 #define _WX_TIMER_H_BASE_
  15
  16 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 #include "wx/stopwatch.h" // for backwards compatibility
  26
  27 #if wxUSE_GUI && wxUSE_TIMER
  28
  29 // ----------------------------------------------------------------------------
  30 // wxTimer
  31 // ----------------------------------------------------------------------------
  32
  33 // more readable flags for Start():
  34
  35 // generate notifications periodically until the timer is stopped (default)
  36 #define wxTIMER_CONTINUOUS FALSE
  37
  38 // only send the notification once and then stop the timer
  39 #define wxTIMER_ONE_SHOT TRUE
  40
  41 // the interface of wxTimer class
  42 class WXDLLEXPORT wxTimerBase : public wxEvtHandler
  43 {
  44 public:
  45     // ctors and initializers
  46     // ----------------------
  47
  48     // default: if you don't call SetOwner(), your only chance to get timer
  49     // notifications is to override Notify() in the derived class
  50     wxTimerBase() { Init(); SetOwner(this); }
  51
  52     // ctor which allows to avoid having to override Notify() in the derived
  53     // class: the owner will get timer notifications which can be handled with
  54     // EVT_TIMER
  55     wxTimerBase(wxEvtHandler *owner, int id = -1)
  56         { Init(); SetOwner(owner, id); }
  57
  58     // same as ctor above
  59     void SetOwner(wxEvtHandler *owner, int id = -1)
  60         { m_owner = owner; m_idTimer = id; }
  61
  62     virtual ~wxTimerBase();
  63
  64     // working with the timer
  65     // ----------------------
  66
  67     // start the timer: if milliseconds == -1, use the same value as for the
  68     // last Start()
  69     //
  70     // it is now valid to call Start() multiple times: this just restarts the
  71     // timer if it is already running
  72     virtual bool Start(int milliseconds = -1, bool oneShot = FALSE);
  73
  74     // stop the timer
  75     virtual void Stop() = 0;
  76
  77     // override this in your wxTimer-derived class if you want to process timer
  78     // messages in it, use non default ctor or SetOwner() otherwise
  79     virtual void Notify();
  80
  81     // getting info
  82     // ------------
  83
  84     // return TRUE if the timer is running
  85     virtual bool IsRunning() const = 0;
  86
  87     // get the (last) timer interval in the milliseconds
  88     int GetInterval() const { return m_milli; }
  89
  90     // return TRUE if the timer is one shot
  91     bool IsOneShot() const { return m_oneShot; }
  92
  93 protected:
  94     // common part of all ctors
  95     void Init() { m_oneShot = FALSE; m_milli = 0; }
  96
  97     wxEvtHandler *m_owner;
  98     int     m_idTimer;
  99
 100     int     m_milli;        // the timer interval
 101     bool    m_oneShot;      // TRUE if one shot
 102
 103     DECLARE_NO_COPY_CLASS(wxTimerBase)
 104 };
 105
 106 // ----------------------------------------------------------------------------
 107 // wxTimer itself
 108 // ----------------------------------------------------------------------------
 109
 110 #if defined(__WXMSW__)
 111     #include "wx/msw/timer.h"
 112 #elif defined(__WXMOTIF__)
 113     #include "wx/motif/timer.h"
 114 #elif defined(__WXGTK__)
 115     #include "wx/gtk/timer.h"
 116 #elif defined(__WXX11__) || defined(__WXMGL__) || defined(__WXCOCOA__)
 117     #include "wx/generic/timer.h"
 118 #elif defined(__WXMAC__)
 119     #include "wx/mac/timer.h"
 120 #elif defined(__WXPM__)
 121     #include "wx/os2/timer.h"
 122 #endif
 123
 124 // ----------------------------------------------------------------------------
 125 // wxTimerRunner: starts the timer in its ctor, stops in the dtor
 126 // ----------------------------------------------------------------------------
 127
 128 class WXDLLEXPORT wxTimerRunner
 129 {
 130 public:
 131     wxTimerRunner(wxTimer& timer) : m_timer(timer) { }
 132     wxTimerRunner(wxTimer& timer, int milli, bool oneShot = FALSE)
 133         : m_timer(timer)
 134     {
 135         m_timer.Start(milli, oneShot);
 136     }
 137
 138     void Start(int milli, bool oneShot = FALSE)
 139     {
 140         m_timer.Start(milli, oneShot);
 141     }
 142
 143     ~wxTimerRunner()
 144     {
 145         if ( m_timer.IsRunning() )
 146         {
 147             m_timer.Stop();
 148         }
 149     }
 150
 151 private:
 152     wxTimer& m_timer;
 153
 154     DECLARE_NO_COPY_CLASS(wxTimerRunner)
 155 };
 156
 157 // ----------------------------------------------------------------------------
 158 // wxTimerEvent
 159 // ----------------------------------------------------------------------------
 160
 161 class WXDLLEXPORT wxTimerEvent : public wxEvent
 162 {
 163 public:
 164     wxTimerEvent(int id = 0, int interval = 0) : wxEvent(id)
 165     {
 166         m_eventType = wxEVT_TIMER;
 167
 168         m_interval = interval;
 169     }
 170
 171     // accessors
 172     int GetInterval() const { return m_interval; }
 173
 174     // implement the base class pure virtual
 175     virtual wxEvent *Clone() const { return new wxTimerEvent(*this); }
 176
 177 private:
 178     int m_interval;
 179
 180     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxTimerEvent)
 181 };
 182
 183 typedef void (wxEvtHandler::*wxTimerEventFunction)(wxTimerEvent&);
 184
 185 #define EVT_TIMER(id, func) \
 186     DECLARE_EVENT_TABLE_ENTRY( wxEVT_TIMER, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTimerEventFunction) & func, NULL),
 187
 188 #endif // wxUSE_GUI && wxUSE_TIMER
 189
 190 #endif
 191     // _WX_TIMER_H_BASE_