TBool Util::DaylightSavingsAppliesL(const TTime& utc)
{
// This algorithm needs the first day of the week to be monday
TDay oldStart;
TLocale set;
oldStart = set.StartOfWeek();
set.SetStartOfWeek(EMonday);
set.Set();
TBuf<9> min;
TBuf<9> max;
utc.FormatL(min, KDaylightSavingsMinFormat);
utc.FormatL(max, KDaylightSavingsMaxFormat);
// Get times representing the first/last possible day of this
// year that daylight savings time change could change on
TTime timeMin;
User::LeaveIfError(timeMin.Set(min));
TTime timeMax;
User::LeaveIfError(timeMax.Set(max));
// Find the last sunday in the respective months
TTimeIntervalDays addMin(6 - timeMin.DayNoInWeek());
TTimeIntervalDays addMax(6 - timeMax.DayNoInWeek());
timeMin += addMin;
timeMax += addMax;
// The change happens at 1AM.
TTimeIntervalHours hour(1);
timeMin += hour;
timeMax += hour;
// Now we know which day the change occurs on.
// Compare it to what the UTC is.
TBool result = ((timeMin <= utc) && (timeMax > utc));
// reset the first week day
set.SetStartOfWeek(oldStart);
set.Set();
return result;
}
/*!
Sets the start of week value selected by the user.
\param index The index of the selected value.
*/
void SettingsUtility::setStartOfWeek(int index)
{
OstTraceFunctionEntry0( SETTINGSUTILITY_SETSTARTOFWEEK_ENTRY );
TLocale locale;
TDay day = (TDay)index;
locale.SetStartOfWeek(day);
locale.Set();
OstTraceFunctionExit0( SETTINGSUTILITY_SETSTARTOFWEEK_EXIT );
}
