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 bool wxTimer::Start(
  60   int                               nMilliseconds
  61 , bool                              bOneShot
  62 )
  63 {
  64     (void)wxTimerBase::Start( nMilliseconds
  65                              ,bOneShot
  66                             );
  67
  68     wxCHECK_MSG( m_milli > 0L, FALSE, wxT("invalid value for timer") );
  69
  70     wxTimerList.DeleteObject(this);
  71
  72     //
  73     // Create a windowless timer
  74     //
  75     m_ulId = ::WinStartTimer( m_Hab
  76                              ,NULL
  77                              ,(m_ulId ? m_ulId : 1L)
  78                              ,(ULONG)nMilliseconds
  79                             );
  80     if (m_ulId > 0L)
  81     {
  82         wxTimerList.Append( m_ulId
  83                            ,this
  84                           );
  85         return(TRUE);
  86     }
  87     else
  88     {
  89         wxLogSysError(_("Couldn't create a timer"));
  90
  91         return(FALSE);
  92     }
  93 }
  94
  95 void wxTimer::Stop()
  96 {
  97     if ( m_ulId )
  98     {
  99         ::WinStopTimer(m_Hab, NULL, m_ulId);
 100         wxTimerList.DeleteObject(this);
 101     }
 102     m_ulId = 0L;
 103 }
 104
 105 // ----------------------------------------------------------------------------
 106 // private functions
 107 // ----------------------------------------------------------------------------
 108
 109 void wxProcessTimer(
 110   wxTimer&                          rTimer
 111 )
 112 {
 113     //
 114     // Avoid to process spurious timer events
 115     //
 116     if (rTimer.m_ulId == 0L)
 117         return;
 118
 119     if (rTimer.IsOneShot())
 120         rTimer.Stop();
 121
 122     rTimer.Notify();
 123 }
 124
 125 ULONG wxTimerProc(
 126   HWND                              WXUNUSED(hwnd)
 127 , ULONG
 128 , int                               nIdTimer
 129 , ULONG
 130 )
 131 {
 132     wxNode*                         pNode = wxTimerList.Find((ULONG)nIdTimer);
 133
 134     wxCHECK_MSG(pNode, 0, wxT("bogus timer id in wxTimerProc") );
 135
 136     wxProcessTimer(*(wxTimer *)pNode->Data());
 137     return 0;
 138 }
 139