include/wx/private/timer.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/private/timerimpl.h
   3 // Purpose:     Base class for wxTimer implementations
   4 // Author:      Lukasz Michalski <lmichalski@sf.net>
   5 // Created:     31.10.2006
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2006-2007 wxWidgets dev team
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_TIMERIMPL_H_BASE_
  12 #define _WX_TIMERIMPL_H_BASE_
  13
  14 #include "wx/defs.h"
  15 #include "wx/event.h"
  16 #include "wx/timer.h"
  17
  18 // ----------------------------------------------------------------------------
  19 // wxTimerImpl: abstract base class for wxTimer implementations
  20 // ----------------------------------------------------------------------------
  21
  22 class WXDLLIMPEXP_BASE wxTimerImpl
  23 {
  24 public:
  25     // default ctor, SetOwner() must be called after it (wxTimer does it)
  26     wxTimerImpl(wxTimer *owner);
  27
  28     // this must be called initially but may be also called later
  29     void SetOwner(wxEvtHandler *owner, int timerid);
  30
  31     // empty but virtual base class dtor, the caller is responsible for
  32     // stopping the timer before it's destroyed (it can't be done from here as
  33     // it's too late)
  34     virtual ~wxTimerImpl() { }
  35
  36
  37     // start the timer. When overriding call base version first.
  38     virtual bool Start(int milliseconds = -1, bool oneShot = false);
  39
  40     // stop the timer, only called if the timer is really running (unlike
  41     // wxTimer::Stop())
  42     virtual void Stop() = 0;
  43
  44     // return true if the timer is running
  45     virtual bool IsRunning() const = 0;
  46
  47     // this should be called by the port-specific code when the timer expires
  48     virtual void Notify() { m_timer->Notify(); }
  49
  50     // the default implementation of wxTimer::Notify(): generate a wxEVT_TIMER
  51     void SendEvent();
  52
  53
  54     // accessors for wxTimer:
  55     wxEvtHandler *GetOwner() const { return m_owner; }
  56     int GetId() const { return m_idTimer; }
  57     int GetInterval() const { return m_milli; }
  58     bool IsOneShot() const { return m_oneShot; }
  59
  60 protected:
  61     wxTimer *m_timer;
  62
  63     wxEvtHandler *m_owner;
  64
  65     int     m_idTimer;      // id passed to wxTimerEvent
  66     int     m_milli;        // the timer interval
  67     bool    m_oneShot;      // true if one shot
  68
  69
  70     DECLARE_NO_COPY_CLASS(wxTimerImpl)
  71 };
  72
  73 #endif // _WX_TIMERIMPL_H_BASE_