src/osx/core/timer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/core/timer.cpp
   3 // Purpose:     wxTimer implementation using CoreFoundation
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     2008-07-01
   7 // RCS-ID:      $Id: timer.cpp 54129 2008-06-11 19:30:52Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_TIMER
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/dynarray.h"
  18 #endif
  19
  20 #include "wx/osx/private.h"
  21 #include "wx/osx/private/timer.h"
  22
  23 struct wxOSXTimerInfo
  24 {
  25     wxOSXTimerImpl*     m_timer;
  26     CFRunLoopTimerRef   m_timerRef;
  27 };
  28
  29 void wxProcessTimer(CFRunLoopTimerRef WXUNUSED(theTimer), void *data)
  30 {
  31     if ( data == NULL )
  32         return;
  33
  34     wxOSXTimerImpl* timer = (wxOSXTimerImpl*)data;
  35
  36     if ( timer->IsOneShot() )
  37         timer->Stop();
  38
  39     timer->Notify();
  40 }
  41
  42 wxOSXTimerImpl::wxOSXTimerImpl(wxTimer *timer)
  43                  : wxTimerImpl(timer)
  44 {
  45     m_info = new wxOSXTimerInfo();
  46     m_info->m_timer = this;
  47     m_info->m_timerRef = kInvalidID;
  48 }
  49
  50 bool wxOSXTimerImpl::IsRunning() const
  51 {
  52     return ( m_info->m_timerRef != kInvalidID && CFRunLoopTimerIsValid(m_info->m_timerRef));
  53 }
  54
  55 wxOSXTimerImpl::~wxOSXTimerImpl()
  56 {
  57     if (m_info->m_timerRef)
  58     {
  59         if ( CFRunLoopTimerIsValid(m_info->m_timerRef) )
  60             CFRunLoopTimerInvalidate( m_info->m_timerRef );
  61         CFRelease( m_info->m_timerRef );
  62     }
  63     delete m_info;
  64 }
  65
  66 bool wxOSXTimerImpl::Start( int milliseconds, bool mode )
  67 {
  68     (void)wxTimerImpl::Start(milliseconds, mode);
  69
  70     wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeout") );
  71     wxCHECK_MSG( m_info->m_timerRef == NULL, false, wxT("attempting to restart a timer") );
  72
  73     CFGregorianUnits gumilli ;
  74     memset(&gumilli,0,sizeof(gumilli) );
  75     gumilli.seconds = m_milli / 1000.0;
  76
  77     CFRunLoopTimerContext ctx ;
  78     memset( &ctx, 0 , sizeof(ctx) );
  79     ctx.version = 0;
  80     ctx.info = this;
  81
  82     m_info->m_timer = this;
  83     m_info->m_timerRef = CFRunLoopTimerCreate(
  84         kCFAllocatorDefault,
  85         CFAbsoluteTimeAddGregorianUnits( CFAbsoluteTimeGetCurrent() , NULL, gumilli ),
  86         IsOneShot() ? 0 : CFTimeInterval( m_milli / 1000.0 ) ,
  87         0, 0, wxProcessTimer, &ctx);
  88
  89     wxASSERT_MSG( m_info->m_timerRef != NULL, wxT("unable to create timer"));
  90
  91     CFRunLoopRef runLoop = 0;
  92 #if wxOSX_USE_IPHONE
  93     runLoop = CFRunLoopGetMain();
  94 #else
  95     runLoop = CFRunLoopGetCurrent();
  96 #endif
  97     CFRunLoopAddTimer( runLoop, m_info->m_timerRef, kCFRunLoopCommonModes) ;
  98
  99
 100     return true;
 101 }
 102
 103 void wxOSXTimerImpl::Stop()
 104 {
 105     if (m_info->m_timerRef)
 106     {
 107         CFRunLoopTimerInvalidate( m_info->m_timerRef );
 108         CFRelease( m_info->m_timerRef );
 109     }
 110     m_info->m_timerRef = kInvalidID;
 111 }
 112
 113 #endif // wxUSE_TIMER
 114