slideshow/source/engine/wakeupevent.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_slideshow.hxx"
  33
  34 // must be first
  35 #include <canvas/debug.hxx>
  36 #include <canvas/verbosetrace.hxx>
  37
  38 #include <wakeupevent.hxx>
  39
  40
  41 namespace slideshow
  42 {
  43     namespace internal
  44     {
  45         WakeupEvent::WakeupEvent(
  46             boost::shared_ptr<canvas::tools::ElapsedTime> const & pTimeBase,
  47             ActivitiesQueue& rActivityQueue ) :
  48             maTimer(pTimeBase),
  49             mnNextTime(0.0),
  50             mpActivity(),
  51             mrActivityQueue( rActivityQueue )
  52         {
  53         }
  54
  55         void WakeupEvent::dispose()
  56         {
  57             mpActivity.reset();
  58         }
  59
  60         bool WakeupEvent::fire()
  61         {
  62             if( !mpActivity )
  63                 return false;
  64
  65             return mrActivityQueue.addActivity( mpActivity );
  66         }
  67
  68         bool WakeupEvent::isCharged() const
  69         {
  70             // this event won't expire, we fire everytime we're
  71             // re-inserted into the event queue.
  72             return true;
  73         }
  74
  75         double WakeupEvent::getActivationTime( double nCurrentTime ) const
  76         {
  77             const double nElapsedTime( maTimer.getElapsedTime() );
  78
  79             return ::std::max( nCurrentTime,
  80                                nCurrentTime - nElapsedTime + mnNextTime );
  81         }
  82
  83         void WakeupEvent::start()
  84         {
  85             // start timer
  86             maTimer.reset();
  87         }
  88
  89         void WakeupEvent::setNextTimeout( double rNextTime )
  90         {
  91             mnNextTime = rNextTime;
  92         }
  93
  94         void WakeupEvent::setActivity( const ActivitySharedPtr& rActivity )
  95         {
  96             mpActivity = rActivity;
  97         }
  98     }
  99 }