src/mac/classic/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 IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxEvtHandler)
  19
  20 #ifdef __WXMAC__
  21 #include "wx/mac/private.h"
  22 #endif
  23 #ifndef __DARWIN__
  24 #include <Timer.h>
  25 #endif
  26
  27 #include "wx/dynarray.h"
  28
  29 typedef struct MacTimerInfo
  30 {
  31     TMTask m_task;
  32     wxMacNotifierTableRef m_table ;
  33     wxTimer* m_timer ;
  34 } ;
  35
  36 static void wxProcessTimer( unsigned long event , void *data ) ;
  37
  38 static pascal void MacTimerProc( TMTask * t )
  39 {
  40     MacTimerInfo * tm = (MacTimerInfo*)  t ;
  41     wxMacAddEvent( tm->m_table , wxProcessTimer, 0 , (void*) tm->m_timer , TRUE ) ;
  42 }
  43
  44 // we need this array to track timers that are being deleted within the Notify procedure
  45 // adding the timer before the Notify call and checking after whether it still is in there
  46 // as the destructor would have removed it from the array
  47
  48 wxArrayPtrVoid gTimersInProcess ;
  49
  50 static void wxProcessTimer( unsigned long event , void *data )
  51 {
  52     if ( !data )
  53         return ;
  54
  55     wxTimer* timer = (wxTimer*) data ;
  56
  57     if ( timer->IsOneShot() )
  58         timer->Stop() ;
  59
  60     gTimersInProcess.Add( timer ) ;
  61
  62     timer->Notify();
  63
  64     int index = gTimersInProcess.Index( timer ) ;
  65
  66     if ( index != wxNOT_FOUND )
  67     {
  68         gTimersInProcess.RemoveAt( index ) ;
  69
  70         if ( !timer->IsOneShot() && timer->m_info->m_task.tmAddr )
  71         {
  72             PrimeTime( (QElemPtr)  &timer->m_info->m_task , timer->GetInterval() ) ;
  73         }
  74
  75     }
  76 }
  77
  78 void wxTimer::Init()
  79 {
  80     m_info = new MacTimerInfo() ;
  81     m_info->m_task.tmAddr = NULL ;
  82     m_info->m_task.tmWakeUp = 0 ;
  83     m_info->m_task.tmReserved = 0 ;
  84     m_info->m_task.qType = 0 ;
  85     m_info->m_table = wxMacGetNotifierTable() ;
  86     m_info->m_timer = this ;
  87 }
  88
  89 bool wxTimer::IsRunning() const
  90 {
  91     // as the qType may already indicate it is elapsed, but it
  92     // was not handled internally yet
  93     return ( m_info->m_task.tmAddr != NULL ) ;
  94 }
  95
  96 wxTimer::~wxTimer()
  97 {
  98     Stop();
  99     if (m_info != NULL) {
 100         delete m_info ;
 101         m_info = NULL ;
 102     }
 103     int index = gTimersInProcess.Index( this ) ;
 104     if ( index != wxNOT_FOUND )
 105         gTimersInProcess.RemoveAt( index ) ;
 106 }
 107
 108 bool wxTimer::Start(int milliseconds,bool mode)
 109 {
 110     (void)wxTimerBase::Start(milliseconds, mode);
 111
 112     wxCHECK_MSG( m_milli > 0, FALSE, wxT("invalid value for timer timeout") );
 113     wxCHECK_MSG( m_info->m_task.tmAddr == NULL , FALSE, wxT("attempting to restart a timer") );
 114
 115 #if defined(UNIVERSAL_INTERFACES_VERSION) && (UNIVERSAL_INTERFACES_VERSION >= 0x0340)
 116     m_info->m_task.tmAddr = NewTimerUPP( MacTimerProc ) ;
 117 #else
 118     m_info->m_task.tmAddr = NewTimerProc( MacTimerProc ) ;
 119 #endif
 120     m_info->m_task.tmWakeUp = 0 ;
 121     m_info->m_task.tmReserved = 0 ;
 122     m_info->m_task.qType = 0 ;
 123     m_info->m_timer = this ;
 124     InsXTime((QElemPtr) &m_info->m_task ) ;
 125     PrimeTime( (QElemPtr) &m_info->m_task , m_milli ) ;
 126     return TRUE;
 127 }
 128
 129 void wxTimer::Stop()
 130 {
 131     if ( m_info->m_task.tmAddr )
 132     {
 133         RmvTime(  (QElemPtr) &m_info->m_task ) ;
 134         DisposeTimerUPP(m_info->m_task.tmAddr) ;
 135         m_info->m_task.tmAddr = NULL ;
 136     }
 137     wxMacRemoveAllNotifiersForData( wxMacGetNotifierTable() , this ) ;
 138 }
 139
 140
 141