QTimeZone::OffsetData QTimeZone::previousTransition(const QDateTime &beforeDateTime) const
{
if (hasTransitions())
return d->toOffsetData(d->previousTransition(beforeDateTime.toMSecsSinceEpoch()));
else
return d->invalidOffsetData();
}
QTimeZone::OffsetData QTimeZone::nextTransition(const QDateTime &afterDateTime) const
{
if (hasTransitions())
return d->toOffsetData(d->nextTransition(afterDateTime.toMSecsSinceEpoch()));
else
return d->invalidOffsetData();
}
QTimeZone::OffsetData QTimeZone::offsetData(const QDateTime &forDateTime) const
{
if (hasTransitions())
return d->toOffsetData(d->data(forDateTime.toMSecsSinceEpoch()));
else
return d->invalidOffsetData();
}
QTimeZone::OffsetDataList QTimeZone::transitions(const QDateTime &fromDateTime,
const QDateTime &toDateTime) const
{
OffsetDataList list;
if (hasTransitions()) {
const QTimeZonePrivate::DataList plist = d->transitions(fromDateTime.toMSecsSinceEpoch(),
toDateTime.toMSecsSinceEpoch());
list.reserve(plist.count());
for (const QTimeZonePrivate::Data &pdata : plist)
list.append(d->toOffsetData(pdata));
}
return list;
}
QDateTime KTimeZone::toZoneTime(const QDateTime &utcDateTime, bool *secondOccurrence) const
{
if (secondOccurrence)
*secondOccurrence = false;
if (!utcDateTime.isValid() || utcDateTime.timeSpec() != Qt::UTC) // check for invalid time
return QDateTime();
// Convert UTC to local time
if (hasTransitions())
{
if (!data(true))
{
// No data - default to UTC
QDateTime dt = utcDateTime;
dt.setTimeSpec(Qt::LocalTime);
return dt;
}
const KTimeZoneData *data = d->d->data;
const int index = data->transitionIndex(utcDateTime);
const int secs = (index >= 0) ? data->transitions().at(index).phase().utcOffset() : data->previousUtcOffset();
QDateTime dt = utcDateTime.addSecs(secs);
if (secondOccurrence)
{
// Check whether the local time occurs twice around a daylight savings time
// shift, and if so, whether it's the first or second occurrence.
*secondOccurrence = data->d->isSecondOccurrence(dt, index);
}
dt.setTimeSpec(Qt::LocalTime);
return dt;
}
else
{
const int secs = offsetAtUtc(utcDateTime);
QDateTime dt = utcDateTime.addSecs(secs);
dt.setTimeSpec(Qt::LocalTime);
if (secondOccurrence)
{
// Check whether the local time occurs twice around a daylight savings time
// shift, and if so, whether it's the first or second occurrence.
*secondOccurrence = (secs != offsetAtZoneTime(dt));
}
return dt;
}
}
bool QWinTimeZonePrivate::hasDaylightTime() const
{
return hasTransitions();
}
