src/os2/timer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        timer.cpp
   3 // Purpose:     wxTimer implementation
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/17/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/window.h"
  16 #include "wx/os2/private.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/setup.h"
  20     #include "wx/list.h"
  21     #include "wx/event.h"
  22     #include "wx/app.h"
  23 #endif
  24
  25 #include "wx/intl.h"
  26 #include "wx/log.h"
  27
  28 #include "wx/timer.h"
  29
  30 #include <time.h>
  31 #include <sys/types.h>
  32
  33 #include <sys/timeb.h>
  34 // ----------------------------------------------------------------------------
  35 // private functions
  36 // ----------------------------------------------------------------------------
  37
  38 wxList wxTimerList(wxKEY_INTEGER);
  39 ULONG wxTimerProc(HWND hwnd, ULONG, int nIdTimer, ULONG);
  40
  41 // ----------------------------------------------------------------------------
  42 // macros
  43 // ----------------------------------------------------------------------------
  44
  45 IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject)
  46
  47 void wxTimer::Init()
  48 {
  49     m_ulId = 0;
  50 }
  51
  52 wxTimer::~wxTimer()
  53 {
  54     Stop();
  55     wxTimer::Stop();
  56     wxTimerList.DeleteObject(this);
  57 }
  58
  59 void wxTimer::Notify()
  60 {
  61     //
  62     // The base class version generates an event if it has owner - which it
  63     // should because otherwise nobody can process timer events, but it does
  64     // not use the OS's ID, which OS/2 must have to figure out which timer fired
  65     //
  66     wxCHECK_RET( m_owner, _T("wxTimer::Notify() should be overridden.") );
  67
  68     wxTimerEvent                    vEvent( m_ulId
  69                                            ,m_milli
  70                                           );
  71
  72     (void)m_owner->ProcessEvent(vEvent);
  73 } // end of wxTimer::Notify
  74
  75 bool wxTimer::Start(
  76   int                               nMilliseconds
  77 , bool                              bOneShot
  78 )
  79 {
  80     (void)wxTimerBase::Start( nMilliseconds
  81                              ,bOneShot
  82                             );
  83
  84     wxCHECK_MSG( m_milli > 0L, FALSE, wxT("invalid value for timer") );
  85
  86     wxTimerList.DeleteObject(this);
  87
  88     //
  89     // Create a windowless timer
  90     //
  91     m_ulId = ::WinStartTimer( m_Hab
  92                              ,NULLHANDLE
  93                              ,0
  94                              ,(ULONG)nMilliseconds
  95                             );
  96     if (m_ulId > 0L)
  97     {
  98         wxTimerList.Append( m_ulId
  99                            ,this
 100                           );
 101         return(TRUE);
 102     }
 103     else
 104     {
 105         wxLogSysError(_("Couldn't create a timer"));
 106
 107         return(FALSE);
 108     }
 109 }
 110
 111 void wxTimer::Stop()
 112 {
 113     if ( m_ulId )
 114     {
 115         ::WinStopTimer(m_Hab, NULL, m_ulId);
 116         wxTimerList.DeleteObject(this);
 117     }
 118 }
 119
 120 // ----------------------------------------------------------------------------
 121 // private functions
 122 // ----------------------------------------------------------------------------
 123
 124 void wxProcessTimer(
 125   wxTimer&                          rTimer
 126 )
 127 {
 128     //
 129     // Avoid to process spurious timer events
 130     //
 131     if (rTimer.m_ulId == 0L)
 132         return;
 133
 134     if (rTimer.IsOneShot())
 135         rTimer.Stop();
 136
 137     rTimer.Notify();
 138 }
 139
 140 ULONG wxTimerProc(
 141   HWND                              WXUNUSED(hwnd)
 142 , ULONG
 143 , int                               nIdTimer
 144 , ULONG
 145 )
 146 {
 147     wxNode*                         pNode = wxTimerList.Find((ULONG)nIdTimer);
 148
 149     wxCHECK_MSG(pNode, 0, wxT("bogus timer id in wxTimerProc") );
 150
 151     wxProcessTimer(*(wxTimer *)pNode->Data());
 152     return 0;
 153 }
 154