src/mac/carbon/timer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        timer.cpp
   3 // Purpose:     wxTimer implementation
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "timer.h"
  14 #endif
  15
  16 #include "wx/timer.h"
  17
  18 #if !USE_SHARED_LIBRARY
  19 IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxEvtHandler)
  20 #endif
  21
  22 #ifdef __WXMAC__
  23 #include "wx/mac/private.h"
  24 #endif
  25 #ifndef __DARWIN__
  26 #include <Timer.h>
  27 #endif
  28
  29 #include "wx/dynarray.h"
  30
  31 typedef struct MacTimerInfo
  32 {
  33     TMTask m_task;
  34     wxMacNotifierTableRef m_table ;
  35     wxTimer* m_timer ;
  36 } ;
  37
  38 static void wxProcessTimer( unsigned long event , void *data ) ;
  39
  40 static pascal void MacTimerProc( TMTask * t )
  41 {
  42     MacTimerInfo * tm = (MacTimerInfo*)  t ;
  43     wxMacAddEvent( tm->m_table , wxProcessTimer, 0 , (void*) tm->m_timer , TRUE ) ;
  44 }
  45
  46 // we need this array to track timers that are being deleted within the Notify procedure
  47 // adding the timer before the Notify call and checking after whether it still is in there
  48 // as the destructor would have removed it from the array
  49
  50 wxArrayPtrVoid gTimersInProcess ;
  51
  52 static void wxProcessTimer( unsigned long event , void *data )
  53 {
  54     if ( !data )
  55         return ;
  56
  57     wxTimer* timer = (wxTimer*) data ;
  58
  59     if ( timer->IsOneShot() )
  60         timer->Stop() ;
  61
  62     gTimersInProcess.Add( timer ) ;
  63
  64     timer->Notify();
  65
  66     int index = gTimersInProcess.Index( timer ) ;
  67
  68     if ( index != wxNOT_FOUND )
  69     {
  70         gTimersInProcess.RemoveAt( index ) ;
  71
  72         if ( !timer->IsOneShot() && timer->m_info->m_task.tmAddr )
  73         {
  74             PrimeTime( (QElemPtr)  &timer->m_info->m_task , timer->GetInterval() ) ;
  75         }
  76
  77     }
  78 }
  79
  80 void wxTimer::Init()
  81 {
  82     m_info = new MacTimerInfo() ;
  83     m_info->m_task.tmAddr = NULL ;
  84     m_info->m_task.tmWakeUp = 0 ;
  85     m_info->m_task.tmReserved = 0 ;
  86     m_info->m_task.qType = 0 ;
  87     m_info->m_table = wxMacGetNotifierTable() ;
  88     m_info->m_timer = this ;
  89 }
  90
  91 bool wxTimer::IsRunning() const
  92 {
  93     // as the qType may already indicate it is elapsed, but it
  94     // was not handled internally yet
  95     return ( m_info->m_task.tmAddr != NULL ) ;
  96 }
  97
  98 wxTimer::~wxTimer()
  99 {
 100     Stop();
 101     if (m_info != NULL) {
 102         delete m_info ;
 103         m_info = NULL ;
 104     }
 105     int index = gTimersInProcess.Index( this ) ;
 106     if ( index != wxNOT_FOUND )
 107         gTimersInProcess.RemoveAt( index ) ;
 108 }
 109
 110 bool wxTimer::Start(int milliseconds,bool mode)
 111 {
 112     (void)wxTimerBase::Start(milliseconds, mode);
 113
 114     wxCHECK_MSG( m_milli > 0, FALSE, wxT("invalid value for timer timeout") );
 115     wxCHECK_MSG( m_info->m_task.tmAddr == NULL , FALSE, wxT("attempting to restart a timer") );
 116
 117     m_info->m_task.tmAddr = NewTimerUPP( MacTimerProc ) ;
 118     m_info->m_task.tmWakeUp = 0 ;
 119     m_info->m_task.tmReserved = 0 ;
 120     m_info->m_task.qType = 0 ;
 121     m_info->m_timer = this ;
 122     InsXTime((QElemPtr) &m_info->m_task ) ;
 123     PrimeTime( (QElemPtr) &m_info->m_task , m_milli ) ;
 124     return TRUE;
 125 }
 126
 127 void wxTimer::Stop()
 128 {
 129     if ( m_info->m_task.tmAddr )
 130     {
 131         RmvTime(  (QElemPtr) &m_info->m_task ) ;
 132         DisposeTimerUPP(m_info->m_task.tmAddr) ;
 133         m_info->m_task.tmAddr = NULL ;
 134     }
 135     wxMacRemoveAllNotifiersForData( wxMacGetNotifierTable() , this ) ;
 136 }
 137
 138
 139