DTime TimeIndex::AdjustToPeriodSpan(const DTime &time) const {
wxDateTime dt = time.GetTime();
if (m_number_of_values == default_units_count[time.GetPeriod()] * PeriodMult[time.GetPeriod()]) {
switch (time.GetPeriod()) {
case PERIOD_T_DECADE :
case PERIOD_T_YEAR :
dt.SetMonth(wxDateTime::Jan);
case PERIOD_T_MONTH :
dt.SetDay(1);
dt.SetHour(0);
break;
case PERIOD_T_WEEK:
case PERIOD_T_SEASON :
dt.SetToWeekDayInSameWeek(wxDateTime::Mon);
case PERIOD_T_DAY :
dt.SetHour(0);
dt.SetMinute(0);
break;
case PERIOD_T_30MINUTE :
dt.SetMinute(dt.GetMinute() / 30 * 30);
dt.SetSecond(0);
break;
case PERIOD_T_5MINUTE :
dt.SetMinute(dt.GetMinute() / 3 * 3);
dt.SetSecond(0);
break;
case PERIOD_T_MINUTE :
case PERIOD_T_30SEC :
dt.SetSecond(dt.GetSecond() / 30 * 30);
break;
case PERIOD_T_OTHER:
case PERIOD_T_LAST:
assert(false);
}
return DTime(time.GetPeriod(), dt);
} else {
DTime ret(time);
return ret.AdjustToPeriodStart();
}
}
int DTime::GetDistance(const DTime &t) const {
assert(IsValid());
assert(t.IsValid());
if (GetPeriod() != t.GetPeriod()) {
wxLogError(_T("our period: %d, his period: %d"), GetPeriod(), t.GetPeriod());
assert(false);
}
const wxDateTime& _t0 = GetTime();
const wxDateTime& _t = t.GetTime();
int ret = -1;
switch (GetPeriod()) {
case PERIOD_T_DECADE:
ret = _t.GetYear() - _t0.GetYear();
break;
case PERIOD_T_YEAR:
ret = _t.GetYear() * 12 + _t.GetMonth()
- _t0.GetYear() * 12 - _t0.GetMonth();
break;
case PERIOD_T_MONTH:
ret = (_t - _t0).GetHours();
//acount for daylight saving time
switch (ret % 24) {
case 1:
ret -= 1;
break;
case 23:
ret += 1;
break;
case -1:
ret += 1;
break;
case -23:
ret -= 1;
break;
}
ret /= 24;
break;
case PERIOD_T_DAY:
ret = (_t - _t0).GetMinutes() / 10;
break;
case PERIOD_T_30MINUTE:
ret = ((_t - _t0).GetSeconds() / 10).ToLong();
break;
case PERIOD_T_5MINUTE:
ret = ((_t - _t0).GetSeconds()).ToLong();
break;
case PERIOD_T_MINUTE:
ret = ((_t - _t0).GetMilliseconds() / 500).ToLong();
break;
case PERIOD_T_30SEC:
ret = ((_t - _t0).GetMilliseconds() / 100).ToLong();
break;
case PERIOD_T_WEEK:
ret = (_t - _t0).GetHours() / 8;
if (_t0.IsDST() != _t.IsDST()) {
if (_t0 < _t && _t.IsDST())
ret += 1;
else if (_t < _t0 && _t0.IsDST())
ret -= 1;
}
break;
case PERIOD_T_SEASON:
ret = (_t - _t0).GetDays() / 7;
if (_t0.IsDST() != _t.IsDST()) {
if (_t0 < _t && _t.IsDST())
ret += 1;
else if (_t < _t0 && _t0.IsDST())
ret -= 1;
}
break;
default:
assert(false);
}
return ret;
}