src/msw/timer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        timer.cpp
   3 // Purpose:     wxTimer implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "timer.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/setup.h"
  25     #include "wx/list.h"
  26     #include "wx/app.h"
  27 #endif
  28
  29 #include "wx/intl.h"
  30 #include "wx/log.h"
  31
  32 #include "wx/timer.h"
  33 #include "wx/msw/private.h"
  34
  35 #include <time.h>
  36 #include <sys/types.h>
  37
  38 #if !defined(__SC__) && !defined(__GNUWIN32__)
  39     #include <sys/timeb.h>
  40 #endif
  41
  42 // ----------------------------------------------------------------------------
  43 // private functions
  44 // ----------------------------------------------------------------------------
  45
  46 wxList wxTimerList(wxKEY_INTEGER);
  47 UINT WINAPI _EXPORT wxTimerProc(HWND hwnd, WORD, int idTimer, DWORD);
  48
  49 // ----------------------------------------------------------------------------
  50 // macros
  51 // ----------------------------------------------------------------------------
  52
  53 #ifdef __WIN32__
  54     #define _EXPORT /**/
  55 #else
  56     #define _EXPORT _export
  57 #endif
  58
  59 #if !USE_SHARED_LIBRARY
  60     IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject)
  61 #endif
  62
  63 // ============================================================================
  64 // implementation
  65 // ============================================================================
  66
  67 // ----------------------------------------------------------------------------
  68 // wxTimer class
  69 // ----------------------------------------------------------------------------
  70 wxTimer::wxTimer(void)
  71 {
  72     milli = 0 ;
  73     lastMilli = -1 ;
  74     id = 0;
  75 }
  76
  77 wxTimer::~wxTimer(void)
  78 {
  79     Stop();
  80
  81     wxTimerList.DeleteObject(this);
  82 }
  83
  84 bool wxTimer::Start(int milliseconds, bool mode)
  85 {
  86     oneShot = mode ;
  87     if (milliseconds < 0)
  88         milliseconds = lastMilli;
  89
  90     wxCHECK_MSG( milliseconds > 0, FALSE, "invalid value for timer timeour" );
  91
  92     lastMilli = milli = milliseconds;
  93
  94     wxTimerList.DeleteObject(this);
  95     TIMERPROC wxTimerProcInst = (TIMERPROC)
  96         MakeProcInstance((FARPROC)wxTimerProc, wxGetInstance());
  97
  98     id = SetTimer(NULL, (UINT)(id ? id : 1),
  99                   (UINT)milliseconds, wxTimerProcInst);
 100     if (id > 0)
 101     {
 102         wxTimerList.Append(id, this);
 103
 104         return TRUE;
 105     }
 106     else
 107     {
 108         wxLogSysError(_("Couldn't create a timer"));
 109
 110         return FALSE;
 111     }
 112 }
 113
 114 void wxTimer::Stop(void)
 115 {
 116     if (id) {
 117         KillTimer(NULL, (UINT)id);
 118         wxTimerList.DeleteObject(this); /* @@@@ */
 119     }
 120     id = 0 ;
 121     milli = 0 ;
 122 }
 123
 124 // ----------------------------------------------------------------------------
 125 // private functions
 126 // ----------------------------------------------------------------------------
 127 static void wxProcessTimer(wxTimer& timer)
 128 {
 129     // Avoid to process spurious timer events
 130     if ( timer.id == 0)
 131         return;
 132
 133     if ( timer.oneShot )
 134         timer.Stop();
 135
 136     timer.Notify();
 137 }
 138
 139 UINT WINAPI _EXPORT wxTimerProc(HWND WXUNUSED(hwnd), WORD, int idTimer, DWORD)
 140 {
 141     wxNode *node = wxTimerList.Find((long)idTimer);
 142
 143     wxCHECK_MSG( node, 0, "bogus timer id in wxTimerProc" );
 144
 145     wxProcessTimer(*(wxTimer *)node->Data());
 146
 147     return 0;
 148 }