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 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "timer.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/setup.h"
  33     #include "wx/list.h"
  34     #include "wx/app.h"
  35 #endif
  36
  37 #include "wx/intl.h"
  38 #include "wx/log.h"
  39
  40 #include "wx/timer.h"
  41 #include "wx/msw/private.h"
  42
  43 #include <time.h>
  44 #include <sys/types.h>
  45
  46 #if !defined(__SC__) && !defined(__GNUWIN32__)
  47     #include <sys/timeb.h>
  48 #endif
  49
  50 // ----------------------------------------------------------------------------
  51 // private functions
  52 // ----------------------------------------------------------------------------
  53
  54 wxList wxTimerList(wxKEY_INTEGER);
  55 UINT WINAPI _EXPORT wxTimerProc(HWND hwnd, WORD, int idTimer, DWORD);
  56
  57 // ----------------------------------------------------------------------------
  58 // macros
  59 // ----------------------------------------------------------------------------
  60
  61 #ifdef __WIN32__
  62     #define _EXPORT /**/
  63 #else
  64     #define _EXPORT _export
  65 #endif
  66
  67 #if !USE_SHARED_LIBRARY
  68     IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject)
  69 #endif
  70
  71 // ============================================================================
  72 // implementation
  73 // ============================================================================
  74
  75 // ----------------------------------------------------------------------------
  76 // wxTimer class
  77 // ----------------------------------------------------------------------------
  78 wxTimer::wxTimer(void)
  79 {
  80     milli = 0 ;
  81     lastMilli = -1 ;
  82     id = 0;
  83 }
  84
  85 wxTimer::~wxTimer(void)
  86 {
  87     Stop();
  88
  89     wxTimerList.DeleteObject(this);
  90 }
  91
  92 bool wxTimer::Start(int milliseconds, bool mode)
  93 {
  94     oneShot = mode ;
  95     if (milliseconds < 0)
  96         milliseconds = lastMilli;
  97
  98     wxCHECK_MSG( milliseconds > 0, FALSE, "invalid value for timer timeour" );
  99
 100     lastMilli = milli = milliseconds;
 101
 102     wxTimerList.DeleteObject(this);
 103     TIMERPROC wxTimerProcInst = (TIMERPROC)
 104         MakeProcInstance((FARPROC)wxTimerProc, wxGetInstance());
 105
 106     id = SetTimer(NULL, (UINT)(id ? id : 1),
 107                   (UINT)milliseconds, wxTimerProcInst);
 108     if (id > 0)
 109     {
 110         wxTimerList.Append(id, this);
 111
 112         return TRUE;
 113     }
 114     else
 115     {
 116         wxLogSysError(_("Couldn't create a timer"));
 117
 118         return FALSE;
 119     }
 120 }
 121
 122 void wxTimer::Stop(void)
 123 {
 124     if (id) {
 125         KillTimer(NULL, (UINT)id);
 126         wxTimerList.DeleteObject(this); /* @@@@ */
 127     }
 128     id = 0 ;
 129     milli = 0 ;
 130 }
 131
 132 // ----------------------------------------------------------------------------
 133 // private functions
 134 // ----------------------------------------------------------------------------
 135 static void wxProcessTimer(wxTimer& timer)
 136 {
 137     // Avoid to process spurious timer events
 138     if ( timer.id == 0)
 139         return;
 140
 141     if ( timer.oneShot )
 142         timer.Stop();
 143
 144     timer.Notify();
 145 }
 146
 147 UINT WINAPI _EXPORT wxTimerProc(HWND WXUNUSED(hwnd), WORD, int idTimer, DWORD)
 148 {
 149     wxNode *node = wxTimerList.Find((long)idTimer);
 150
 151     wxCHECK_MSG( node, 0, "bogus timer id in wxTimerProc" );
 152
 153     wxProcessTimer(*(wxTimer *)node->Data());
 154
 155     return 0;
 156 }