nsSMILTimeValue
nsSMILTimeValueSpec::ConvertBetweenTimeContainers(
const nsSMILTimeValue& aSrcTime,
const nsSMILTimeContainer* aSrcContainer)
{
// If the source time is either indefinite or unresolved the result is going
// to be the same
if (!aSrcTime.IsDefinite())
return aSrcTime;
// Convert from source time container to our parent time container
const nsSMILTimeContainer* dstContainer = mOwner->GetTimeContainer();
if (dstContainer == aSrcContainer)
return aSrcTime;
// If one of the elements is not attached to a time container then we can't do
// any meaningful conversion
if (!aSrcContainer || !dstContainer)
return nsSMILTimeValue(); // unresolved
nsSMILTimeValue docTime =
aSrcContainer->ContainerToParentTime(aSrcTime.GetMillis());
if (docTime.IsIndefinite())
// This will happen if the source container is paused and we have a future
// time. Just return the indefinite time.
return docTime;
NS_ABORT_IF_FALSE(docTime.IsDefinite(),
"ContainerToParentTime gave us an unresolved or indefinite time");
return dstContainer->ParentToContainerTime(docTime.GetMillis());
}
bool
nsSMILTimeValueSpec::ApplyOffset(nsSMILTimeValue& aTime) const
{
// indefinite + offset = indefinite. Likewise for unresolved times.
if (!aTime.IsDefinite()) {
return true;
}
double resultAsDouble =
(double)aTime.GetMillis() + mParams.mOffset.GetMillis();
if (resultAsDouble > std::numeric_limits<nsSMILTime>::max() ||
resultAsDouble < std::numeric_limits<nsSMILTime>::min()) {
return false;
}
aTime.SetMillis(aTime.GetMillis() + mParams.mOffset.GetMillis());
return true;
}
/**
* @see SMILANIM 3.3.4
*/
nsSMILTimeValue
nsSMILTimedElement::CalcActiveEnd(const nsSMILTimeValue& aBegin,
const nsSMILTimeValue& aEnd)
{
nsSMILTimeValue result;
NS_ASSERTION(mSimpleDur.IsResolved() || mSimpleDur.IsIndefinite(),
"Unresolved simple duration in CalcActiveEnd.");
if (!aBegin.IsResolved() && !aBegin.IsIndefinite()) {
NS_ERROR("Unresolved begin time passed to CalcActiveEnd.");
result.SetIndefinite();
return result;
}
if (mRepeatDur.IsIndefinite() || aBegin.IsIndefinite()) {
result.SetIndefinite();
} else {
result = GetRepeatDuration();
}
if (aEnd.IsResolved() && aBegin.IsResolved()) {
nsSMILTime activeDur = aEnd.GetMillis() - aBegin.GetMillis();
if (result.IsResolved()) {
result.SetMillis(PR_MIN(result.GetMillis(), activeDur));
} else {
result.SetMillis(activeDur);
}
}
result = ApplyMinAndMax(result);
if (result.IsResolved()) {
nsSMILTime activeEnd = result.GetMillis() + aBegin.GetMillis();
result.SetMillis(activeEnd);
}
return result;
}
