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