src/mac/classic/timer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/classic/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 // for compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/dynarray.h"
  17 #endif
  18
  19 #include "wx/timer.h"
  20
  21 IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxEvtHandler)
  22
  23 #ifdef __WXMAC__
  24 #include "wx/mac/private.h"
  25 #endif
  26 #ifndef __DARWIN__
  27 #include <Timer.h>
  28 #endif
  29
  30 typedef struct MacTimerInfo
  31 {
  32     TMTask m_task;
  33     wxMacNotifierTableRef m_table ;
  34     wxTimer* m_timer ;
  35 } ;
  36
  37 static void wxProcessTimer( unsigned long event , void *data ) ;
  38
  39 static pascal void MacTimerProc( TMTask * t )
  40 {
  41     MacTimerInfo * tm = (MacTimerInfo*)  t ;
  42     wxMacAddEvent( tm->m_table , wxProcessTimer, 0 , (void*) tm->m_timer , TRUE ) ;
  43 }
  44
  45 // we need this array to track timers that are being deleted within the Notify procedure
  46 // adding the timer before the Notify call and checking after whether it still is in there
  47 // as the destructor would have removed it from the array
  48
  49 wxArrayPtrVoid gTimersInProcess ;
  50
  51 static void wxProcessTimer( unsigned long event , void *data )
  52 {
  53     if ( !data )
  54         return ;
  55
  56     wxTimer* timer = (wxTimer*) data ;
  57
  58     if ( timer->IsOneShot() )
  59         timer->Stop() ;
  60
  61     gTimersInProcess.Add( timer ) ;
  62
  63     timer->Notify();
  64
  65     int index = gTimersInProcess.Index( timer ) ;
  66
  67     if ( index != wxNOT_FOUND )
  68     {
  69         gTimersInProcess.RemoveAt( index ) ;
  70
  71         if ( !timer->IsOneShot() && timer->m_info->m_task.tmAddr )
  72         {
  73             PrimeTime( (QElemPtr)  &timer->m_info->m_task , timer->GetInterval() ) ;
  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 }