void
Clock::Begin (TimeSpan parentTime)
{
//printf ("clock %p (%s) begin\n", this, GetName ());
emit_completed = false;
has_completed = false;
was_stopped = false;
/* we're starting. initialize our current_time field */
SetCurrentTime ((parentTime - root_parent_time - timeline->GetBeginTime ()) * timeline->GetSpeedRatio());
Duration d = GetNaturalDuration ();
if (d.HasTimeSpan ()) {
if (d.GetTimeSpan() == 0) {
progress = 1.0;
}
else {
progress = (double)current_time / d.GetTimeSpan();
if (progress > 1.0)
progress = 1.0;
}
}
else
progress = 0.0;
CalculateFillTime ();
SetClockState (Clock::Active);
// force the time manager to tick the clock hierarchy to wake it up
time_manager->NeedClockTick ();
}
bool
Timeline::Validate ()
{
RepeatBehavior *repeat = GetRepeatBehavior ();
Duration *duration = GetDuration ();
if (duration->HasTimeSpan () && duration->GetTimeSpan () == 0 &&
(GetFillBehavior () == FillBehaviorStop || (repeat->HasCount () && repeat->GetCount () > 1.0)))
timeline_status = TIMELINE_STATUS_DETACHED;
// FIXME This should prolly be changed to a more generic if BeginTime > Duration
// Need to investigate, though SL checking seems to be very selective
if (duration->HasTimeSpan () && duration->GetTimeSpan () == 0 &&
this->GetBeginTime () > 0)
return false;
return true;
}
Duration
ParallelTimeline::GetNaturalDurationCore (Clock *clock)
{
TimelineCollection *collection = GetChildren ();
Duration d = Duration::Automatic;
TimeSpan duration_span = 0;
Timeline *timeline;
int count = collection->GetCount ();
if (count == 0)
return Duration::FromSeconds (0);
for (int i = 0; i < count; i++) {
timeline = collection->GetValueAt (i)->AsTimeline ();
Duration duration = timeline->GetNaturalDuration (clock);
if (duration.IsAutomatic())
continue;
if (duration.IsForever())
return Duration::Forever;
TimeSpan span = duration.GetTimeSpan ();
RepeatBehavior *repeat = timeline->GetRepeatBehavior ();
if (repeat->IsForever())
return Duration::Forever;
if (repeat->HasCount ())
span = (TimeSpan) (span * repeat->GetCount ());
if (timeline->GetAutoReverse ())
span *= 2;
// If we have duration-base repeat behavior,
// clamp/up our span to that.
if (repeat->HasDuration ())
span = repeat->GetDuration ();
if (span != 0)
span = (TimeSpan)(span / timeline->GetSpeedRatio());
span += timeline->GetBeginTime ();
if (duration_span <= span) {
duration_span = span;
d = Duration (duration_span);
}
}
return d;
}