include/wx/timer.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/timer.h
   3 // Purpose:     wxTimer, wxStopWatch and global time-related functions
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin (wxTimerBase)
   6 //              Guillermo Rodriguez (global clean up)
   7 // Created:     04/01/98
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) Julian Smart
  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/defs.h"
  21
  22 #if wxUSE_GUI && wxUSE_TIMER
  23
  24 #include "wx/object.h"
  25 #include "wx/longlong.h"
  26 #include "wx/event.h"
  27 #include "wx/stopwatch.h" // for backwards compatibility
  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 timerid = wxID_ANY)
  56         { Init(); SetOwner(owner, timerid); }
  57
  58     // same as ctor above
  59     void SetOwner(wxEvtHandler *owner, int timerid = wxID_ANY)
  60         { m_owner = owner; m_idTimer = timerid; }
  61     wxEvtHandler* GetOwner() const { return m_owner; }
  62
  63     virtual ~wxTimerBase();
  64
  65     // working with the timer
  66     // ----------------------
  67
  68     // start the timer: if milliseconds == -1, use the same value as for the
  69     // last Start()
  70     //
  71     // it is now valid to call Start() multiple times: this just restarts the
  72     // timer if it is already running
  73     virtual bool Start(int milliseconds = -1, bool oneShot = false);
  74
  75     // stop the timer
  76     virtual void Stop() = 0;
  77
  78     // override this in your wxTimer-derived class if you want to process timer
  79     // messages in it, use non default ctor or SetOwner() otherwise
  80     virtual void Notify();
  81
  82     // getting info
  83     // ------------
  84
  85     // return true if the timer is running
  86     virtual bool IsRunning() const = 0;
  87
  88     // get the (last) timer interval in the milliseconds
  89     int GetInterval() const { return m_milli; }
  90
  91     // return true if the timer is one shot
  92     bool IsOneShot() const { return m_oneShot; }
  93
  94     // return the timer ID
  95     int GetId() const { return m_idTimer; }
  96
  97
  98 protected:
  99     // common part of all ctors
 100     void Init() { m_oneShot = false; m_milli = 0; }
 101
 102     wxEvtHandler *m_owner;
 103     int     m_idTimer;
 104
 105     int     m_milli;        // the timer interval
 106     bool    m_oneShot;      // true if one shot
 107
 108     DECLARE_NO_COPY_CLASS(wxTimerBase)
 109 };
 110
 111 // ----------------------------------------------------------------------------
 112 // wxTimer itself
 113 // ----------------------------------------------------------------------------
 114
 115 #if defined(__WXMSW__)
 116     #include "wx/msw/timer.h"
 117 #elif defined(__WXMOTIF__)
 118     #include "wx/motif/timer.h"
 119 #elif defined(__WXGTK__)
 120     #include "wx/gtk/timer.h"
 121 #elif defined(__WXX11__) || defined(__WXMGL__)
 122     #include "wx/generic/timer.h"
 123 #elif defined (__WXCOCOA__)
 124     #include "wx/cocoa/timer.h"
 125 #elif defined(__WXMAC__)
 126     #include "wx/mac/timer.h"
 127 #elif defined(__WXPM__)
 128     #include "wx/os2/timer.h"
 129 #endif
 130
 131 // ----------------------------------------------------------------------------
 132 // wxTimerRunner: starts the timer in its ctor, stops in the dtor
 133 // ----------------------------------------------------------------------------
 134
 135 class WXDLLEXPORT wxTimerRunner
 136 {
 137 public:
 138     wxTimerRunner(wxTimer& timer) : m_timer(timer) { }
 139     wxTimerRunner(wxTimer& timer, int milli, bool oneShot = false)
 140         : m_timer(timer)
 141     {
 142         m_timer.Start(milli, oneShot);
 143     }
 144
 145     void Start(int milli, bool oneShot = false)
 146     {
 147         m_timer.Start(milli, oneShot);
 148     }
 149
 150     ~wxTimerRunner()
 151     {
 152         if ( m_timer.IsRunning() )
 153         {
 154             m_timer.Stop();
 155         }
 156     }
 157
 158 private:
 159     wxTimer& m_timer;
 160
 161     DECLARE_NO_COPY_CLASS(wxTimerRunner)
 162 };
 163
 164 // ----------------------------------------------------------------------------
 165 // wxTimerEvent
 166 // ----------------------------------------------------------------------------
 167
 168 class WXDLLEXPORT wxTimerEvent : public wxEvent
 169 {
 170 public:
 171     wxTimerEvent(int timerid = 0, int interval = 0) : wxEvent(timerid)
 172     {
 173         m_eventType = wxEVT_TIMER;
 174
 175         m_interval = interval;
 176     }
 177
 178     // accessors
 179     int GetInterval() const { return m_interval; }
 180
 181     // implement the base class pure virtual
 182     virtual wxEvent *Clone() const { return new wxTimerEvent(*this); }
 183
 184 private:
 185     int m_interval;
 186
 187     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxTimerEvent)
 188 };
 189
 190 typedef void (wxEvtHandler::*wxTimerEventFunction)(wxTimerEvent&);
 191
 192 #define wxTimerEventHandler(func) \
 193     (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxTimerEventFunction, &func)
 194
 195 #define EVT_TIMER(timerid, func) \
 196     wx__DECLARE_EVT1(wxEVT_TIMER, timerid, wxTimerEventHandler(func))
 197
 198 #endif // wxUSE_GUI && wxUSE_TIMER
 199
 200 #endif
 201     // _WX_TIMER_H_BASE_