substraction
------------
wxDateTime - wxDateTime = wxTimeSpan
+ wxDateTime - wxTimeSpan = wxDateTime
+ wxDateTime - wxDateSpan = wxDateTime
wxTimeSpan - wxTimeSpan = wxTimeSpan
wxDateSpan - wxDateSpan = wxDateSpan
multiplication
--------------
wxTimeSpan * number = wxTimeSpan
+ number * wxTimeSpan = wxTimeSpan
wxDateSpan * number = wxDateSpan
+ number * wxDateSpan = wxDateSpan
unitary minus
-------------
-wxTimeSpan = wxTimeSpan
-wxDateSpan = wxDateSpan
+
+ For each binary operation OP (+, -, *) we have the following operatorOP=() as
+ a method and the method with a symbolic name OPER (Add, Substract, Multiply)
+ as a synonym for it and another const method with the same name which returns
+ the changed copy of the object and operatorOP() as a global function which is
+ implemented in terms of the const version of OPEN. For the unary - we have
+ operator-() as a method, Neg() as synonym for it and Negate() which returns
+ the copy of the object with the changed sign.
*/
// ----------------------------------------------------------------------------
-// This class represents an absolute moment in the time
+// wxDateTime represents an absolute moment in the time
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxDateTime
// types
// ------------------------------------------------------------------------
- // a small unsigned integer type for storing things like seconds, days
- // of the week, &c. It should be at least short (i.e. not char) to
- // contain the number of milliseconds - it may also be 'int' because
- // there is no size penalty associated with it in our code, we don't
- // store any data in this format
+ // a small unsigned integer type for storing things like minutes,
+ // seconds &c. It should be at least short (i.e. not char) to contain
+ // the number of milliseconds - it may also be 'int' because there is
+ // no size penalty associated with it in our code, we don't store any
+ // data in this format
typedef unsigned short wxDateTime_t;
+ // constants
+ // ------------------------------------------------------------------------
+
// the timezones
enum TZ
{
{
Country_Unknown, // no special information for this country
Country_Default, // set the default country with SetCountry() method
+ // or use the default country with any other
// TODO add more countries (for this we must know about DST and/or
// holidays for this country)
+
+ // Western European countries: we assume that they all follow the same
+ // DST rules (true or false?)
+ Country_WesternEurope_Start,
+ Country_EEC = Country_WesternEurope_Start,
France,
+ Germany,
+ UK,
+ Country_WesternEurope_End = UK,
+
+ Russia,
+
USA
};
Inv_Year = SHRT_MIN // should hold in wxDateTime_t
};
+ // flags for GetWeekDayName and GetMonthName
+ enum NameFlags
+ {
+ Name_Full = 0x01, // return full name
+ Name_Abbr = 0x02 // return abbreviated name
+ };
+
// helper classes
// ------------------------------------------------------------------------
TimeZone(TZ tz);
TimeZone(wxDateTime_t offset = 0) { m_offset = offset; }
- int GetOffset() const { return m_offset; }
+ long GetOffset() const { return m_offset; }
private:
// offset for this timezone from GMT in seconds
- int m_offset;
+ long m_offset;
};
// standard struct tm is limited to the years from 1900 (because
// set the current country
static void SetCountry(Country country);
// get the current country
- static inline Country GetCountry();
+ static Country GetCountry();
+
+ // return TRUE if the country is a West European one (in practice,
+ // this means that the same DST rules as for EEC apply)
+ static bool IsWestEuropeanCountry(Country country = Country_Default);
// return the current year
static int GetCurrentYear(Calendar cal = Gregorian);
// get the full (default) or abbreviated month name in the current
// locale, returns empty string on error
- static wxString GetMonthName(Month month, bool abbr = FALSE);
+ static wxString GetMonthName(Month month,
+ NameFlags flags = Name_Full);
// get the full (default) or abbreviated weekday name in the current
// locale, returns empty string on error
- static wxString GetWeekDayName(WeekDay weekday, bool abbr = FALSE);
+ static wxString GetWeekDayName(WeekDay weekday,
+ NameFlags flags = Name_Full);
+
+ // get the AM and PM strings in the current locale (may be empty)
+ static void GetAmPmStrings(wxString *am, wxString *pm);
+
+ // return TRUE if the given country uses DST for this year
+ static bool IsDSTApplicable(int year = Inv_Year,
+ Country country = Country_Default);
// get the beginning of DST for this year, will return invalid object
// if no DST applicable in this year. The default value of the
// parameter means to take the current year.
- static wxDateTime GetBeginDST(int year = Inv_Year);
+ static wxDateTime GetBeginDST(int year = Inv_Year,
+ Country country = Country_Default);
// get the end of DST for this year, will return invalid object
// if no DST applicable in this year. The default value of the
// parameter means to take the current year.
- static wxDateTime GetEndDST(int year = Inv_Year);
+ static wxDateTime GetEndDST(int year = Inv_Year,
+ Country country = Country_Default);
// return the wxDateTime object for the current time
static inline wxDateTime Now();
+ // return the wxDateTime object for today midnight: i.e. as Now() but
+ // with time set to 0
+ static inline wxDateTime Today();
+
// constructors: you should test whether the constructor succeeded with
// IsValid() function. The values Inv_Month and Inv_Year for the
// parameters mean take current month and/or year values.
// unchanged, e.g. don't explictly zero it)
// ------------------------------------------------------------------------
+ // set to the given week day in the same week as this one
+ wxDateTime& SetToWeekDayInSameWeek(WeekDay weekday);
+
+ // set to the next week day following this one
+ wxDateTime& SetToNextWeekDay(WeekDay weekday);
+
+ // set to the previous week day following this one
+ wxDateTime& SetToPrevWeekDay(WeekDay weekday);
+
// set to Nth occurence of given weekday in the given month of the
// given year (time is set to 0), return TRUE on success and FALSE on
// failure. n may be positive (1..5) or negative to count from the end
wxDateTime& SetToLastMonthDay(Month month = Inv_Month,
int year = Inv_Year);
+ // sets to the given year day (1..365 or 366)
+ wxDateTime& SetToYearDay(wxDateTime_t yday);
+
// The definitions below were taken verbatim from
//
// http://www.capecod.net/~pbaum/date/date0.htm
// get the Julian Day number (the fractional part specifies the time of
// the day, related to noon - beware of rounding errors!)
double GetJulianDayNumber() const;
+ double GetJDN() const { return GetJulianDayNumber(); }
+
+ // get the Modified Julian Day number: it is equal to JDN - 2400000.5
+ // and so integral MJDs correspond to the midnights (and not noons).
+ // MJD 0 is Nov 17, 1858
+ double GetModifiedJulianDayNumber() const { return GetJDN() - 2400000.5; }
+ double GetMJD() const { return GetModifiedJulianDayNumber(); }
// get the Rata Die number
double GetRataDie() const;
wxDateTime ToGMT() const { return ToTimezone(GMT0); }
wxDateTime& MakeGMT() { return MakeTimezone(GMT0); }
+ // is daylight savings time in effect at this moment according to the
+ // rules of the specified country?
+ //
+ // Return value is > 0 if DST is in effect, 0 if it is not and -1 if
+ // the information is not available (this is compatible with ANSI C)
+ int IsDST(Country country = Country_Default) const;
+
// accessors: many of them take the timezone parameter which indicates the
// timezone for which to make the calculations and the default value means
// to do it for the current timezone of this machine (even if the function
// get the day since the year start (1..366, 0 if date is invalid)
wxDateTime_t GetDayOfYear(const TimeZone& tz = Local) const;
- // get the week number since the year start (1..52, 0 if date is
+ // get the week number since the year start (1..52 or 53, 0 if date is
// invalid)
wxDateTime_t GetWeekOfYear(const TimeZone& tz = Local) const;
+ // get the week number since the month start (1..5, 0 if date is
+ // invalid)
+ wxDateTime_t GetWeekOfMonth(const TimeZone& tz = Local) const;
// is this date a work day? This depends on a country, of course,
// because the holidays are different in different countries
// adoption of the Gregorian calendar is simply unknown.
bool IsGregorianDate(GregorianAdoption country = Gr_Standard) const;
- // is daylight savings time in effect at this moment according to the
- // rules of the specified country?
- //
- // Return value is > 0 if DST is in effect, 0 if it is not and -1 if
- // the information is not available (this is compatible with ANSI C)
- int IsDST(Country country = Country_Default) const;
-
// comparison (see also functions below for operator versions)
// ------------------------------------------------------------------------
// returns TRUE if the two moments are strictly identical
inline bool IsEqualTo(const wxDateTime& datetime) const;
- // returns TRUE if the two moments are identical
- inline bool operator==(const wxDateTime& datetime) const;
-
- // returns TRUE if the two moments are different
- inline bool operator!=(const wxDateTime& datetime) const;
-
// returns TRUE if the date is strictly earlier than the given one
inline bool IsEarlierThan(const wxDateTime& datetime) const;
// returns TRUE if the date is in the given range
inline bool IsBetween(const wxDateTime& t1, const wxDateTime& t2) const;
- // date operations: for the non-const methods, the return value is this
- // object itself (see also functions below for operator versions)
+ // do these two objects refer to the same date?
+ inline bool IsSameDate(const wxDateTime& dt) const;
+
+ // do these two objects have the same time?
+ inline bool IsSameTime(const wxDateTime& dt) const;
+
+ // are these two objects equal up to given timespan?
+ inline bool IsEqualUpTo(const wxDateTime& dt, const wxTimeSpan& ts) const;
+
+ // arithmetics with dates (see also below for more operators)
// ------------------------------------------------------------------------
+ // return the sum of the date with a time span (positive or negative)
+ inline wxDateTime Add(const wxTimeSpan& diff) const;
// add a time span (positive or negative)
inline wxDateTime& Add(const wxTimeSpan& diff);
// add a time span (positive or negative)
inline wxDateTime& operator+=(const wxTimeSpan& diff);
+ // return the difference of the date with a time span
+ inline wxDateTime Substract(const wxTimeSpan& diff) const;
// substract a time span (positive or negative)
inline wxDateTime& Substract(const wxTimeSpan& diff);
// substract a time span (positive or negative)
inline wxDateTime& operator-=(const wxTimeSpan& diff);
+ // return the sum of the date with a date span
+ inline wxDateTime Add(const wxDateSpan& diff) const;
// add a date span (positive or negative)
wxDateTime& Add(const wxDateSpan& diff);
// add a date span (positive or negative)
inline wxDateTime& operator+=(const wxDateSpan& diff);
+ // return the difference of the date with a date span
+ inline wxDateTime Substract(const wxDateSpan& diff) const;
// substract a date span (positive or negative)
inline wxDateTime& Substract(const wxDateSpan& diff);
// substract a date span (positive or negative)
inline wxDateTime& operator-=(const wxDateSpan& diff);
- // substract a date (may result in positive or negative time span)
- inline wxTimeSpan Substract(const wxDateTime& datetime) const;
- // substract a date (may result in positive or negative time span)
- inline wxTimeSpan operator-(const wxDateTime& datetime) const;
+ // return the difference between two dates
+ inline wxTimeSpan Substract(const wxDateTime& dt) const;
- // conversion to/from text: all conversions from text return TRUE on
- // success or FALSE if the date is malformed/out of supported range
+ // conversion to/from text: all conversions from text return the pointer to
+ // the next character following the date specification (i.e. the one where
+ // the scan had to stop) or NULL on failure.
// ------------------------------------------------------------------------
// parse a string in RFC 822 format (found e.g. in mail headers and
// having the form "Wed, 10 Feb 1999 19:07:07 +0100")
- bool ParseRfc822Date(const wxString& date);
- // parse a date/time in the given format (see strptime(3))
- bool ParseFormat(const wxString& date, const char *format = "%c");
+ const wxChar *ParseRfc822Date(const wxChar* date);
+ // parse a date/time in the given format (see strptime(3)), fill in
+ // the missing (in the string) fields with the values of dateDef (by
+ // default, they will not change if they had valid values or will
+ // default to Today() otherwise)
+ const wxChar *ParseFormat(const wxChar *date,
+ const wxChar *format = _T("%c"),
+ const wxDateTime& dateDef = ms_InvDateTime);
// parse a string containing the date/time in "free" format, this
// function will try to make an educated guess at the string contents
- // (and return FALSE if it fails)
- bool ParseDateTime(const wxString& date);
+ const wxChar *ParseDateTime(const wxChar *datetime);
+ // parse a string containing the date only in "free" format (less
+ // flexible than ParseDateTime)
+ const wxChar *ParseDate(const wxChar *date);
+ // parse a string containing the time only in "free" format
+ const wxChar *ParseTime(const wxChar *time);
// this function accepts strftime()-like format string (default
// argument corresponds to the preferred date and time representation
// implementation
// ------------------------------------------------------------------------
+ // construct from internal representation
+ wxDateTime(const wxLongLong& time) { m_time = time; }
+
// get the internal representation
inline wxLongLong GetValue() const;
// this constant is used to transform a time_t value to the internal
// representation, as time_t is in seconds and we use milliseconds it's
// fixed to 1000
- static const unsigned int TIME_T_FACTOR;
+ static const long TIME_T_FACTOR;
// invalid wxDateTime object - returned by all functions which return
// "wxDateTime &" on failure
// return the timespan for the given number of seconds
static wxTimeSpan Seconds(int sec) { return wxTimeSpan(0, 0, sec); }
+ static wxTimeSpan Second() { return Seconds(1); }
// return the timespan for the given number of minutes
static wxTimeSpan Minutes(int min) { return wxTimeSpan(0, min, 0 ); }
+ static wxTimeSpan Minute() { return Minutes(1); }
// return the timespan for the given number of hours
static wxTimeSpan Hours(int hours) { return wxTimeSpan(hours, 0, 0); }
+ static wxTimeSpan Hour() { return Hours(1); }
+
+ // return the timespan for the given number of days
+ static wxTimeSpan Days(int days) { return Hours(24 * days); }
+ static wxTimeSpan Day() { return Days(1); }
+
+ // return the timespan for the given number of weeks
+ static wxTimeSpan Weeks(int days) { return Days(7 * days); }
+ static wxTimeSpan Week() { return Weeks(1); }
// default ctor constructs the 0 time span
wxTimeSpan() { }
int seconds = 0,
int milliseconds = 0);
- // from internal representation
- wxTimeSpan(wxLongLong diff) : m_diff(diff) { }
-
// default copy ctor is ok
// no dtor
- // arithmetics with time spans
+ // arithmetics with time spans (see also below for more operators)
// ------------------------------------------------------------------------
+ // return the sum of two timespans
+ inline wxTimeSpan Add(const wxTimeSpan& diff) const;
// add two timespans together
inline wxTimeSpan& Add(const wxTimeSpan& diff);
// add two timespans together
wxTimeSpan& operator+=(const wxTimeSpan& diff) { return Add(diff); }
+ // return the difference of two timespans
+ inline wxTimeSpan Substract(const wxTimeSpan& diff) const;
// substract another timespan
inline wxTimeSpan& Substract(const wxTimeSpan& diff);
// substract another timespan
wxTimeSpan& operator-=(const wxTimeSpan& diff) { return Substract(diff); }
+ // multiply timespan by a scalar
+ inline wxTimeSpan Multiply(int n) const;
// multiply timespan by a scalar
inline wxTimeSpan& Multiply(int n);
// multiply timespan by a scalar
wxTimeSpan& operator*=(int n) { return Multiply(n); }
- // multiply timespan by a scalar
- inline wxTimeSpan operator*(int n) const;
// return this timespan with inversed sign
wxTimeSpan Negate() const { return wxTimeSpan(-GetValue()); }
// implementation
// ------------------------------------------------------------------------
+ // construct from internal representation
+ wxTimeSpan(const wxLongLong& diff) { m_diff = diff; }
+
// get the internal representation
wxLongLong GetValue() const { return m_diff; }
// get an object for the given number of days
static wxDateSpan Days(int days) { return wxDateSpan(0, 0, 0, days); }
+ static wxDateSpan Day() { return Days(1); }
// get an object for the given number of weeks
static wxDateSpan Weeks(int weeks) { return wxDateSpan(0, 0, weeks, 0); }
+ static wxDateSpan Week() { return Weeks(1); }
// get an object for the given number of months
static wxDateSpan Months(int mon) { return wxDateSpan(0, mon, 0, 0); }
+ static wxDateSpan Month() { return Months(1); }
// get an object for the given number of years
static wxDateSpan Years(int years) { return wxDateSpan(years, 0, 0, 0); }
+ static wxDateSpan Year() { return Years(1); }
// default copy ctor is ok
// returns 7*GetWeeks() + GetDays()
int GetTotalDays() const { return 7*m_weeks + m_days; }
- // arithmetics
+ // arithmetics with date spans (see also below for more operators)
// ------------------------------------------------------------------------
+ // return sum of two date spans
+ inline wxDateSpan Add(const wxDateSpan& other) const;
// add another wxDateSpan to us
inline wxDateSpan& Add(const wxDateSpan& other);
// add another wxDateSpan to us
inline wxDateSpan& operator+=(const wxDateSpan& other);
+ // return difference of two date spans
+ inline wxDateSpan Substract(const wxDateSpan& other) const;
// substract another wxDateSpan from us
inline wxDateSpan& Substract(const wxDateSpan& other);
// substract another wxDateSpan from us
// inverse the sign of this timespan
wxDateSpan& operator-() { return Neg(); }
+ // return the date span proportional to this one with given factor
+ inline wxDateSpan Multiply(int factor) const;
// multiply all components by a (signed) number
- inline wxDateSpan& operator*=(int factor);
+ inline wxDateSpan& Multiply(int factor);
+ // multiply all components by a (signed) number
+ inline wxDateSpan& operator*=(int factor) { return Multiply(factor); }
private:
int m_years,
// wxDateTime operators
// ----------------------------------------------------------------------------
-inline bool WXDLLEXPORT operator<(const wxDateTime &t1, const wxDateTime &t2)
+// arithmetics
+// -----------
+
+// no need to check for validity - the member functions we call will do it
+
+inline wxDateTime WXDLLEXPORT operator+(const wxDateTime& dt,
+ const wxTimeSpan& ts)
+{
+ return dt.Add(ts);
+}
+
+inline wxDateTime WXDLLEXPORT operator-(const wxDateTime& dt,
+ const wxTimeSpan& ts)
+{
+ return dt.Substract(ts);
+}
+
+inline wxDateTime WXDLLEXPORT operator+(const wxDateTime& dt,
+ const wxDateSpan& ds)
{
- wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
+ return dt.Add(ds);
+}
+
+inline wxDateTime WXDLLEXPORT operator-(const wxDateTime& dt,
+ const wxDateSpan& ds)
+{
+ return dt.Substract(ds);
+}
+
+inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime& dt1,
+ const wxDateTime& dt2)
+{
+ return dt1.Substract(dt2);
+}
+
+// comparison
+// ----------
+
+inline bool WXDLLEXPORT operator<(const wxDateTime& t1, const wxDateTime& t2)
+{
+ wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") );
return t1.GetValue() < t2.GetValue();
}
-inline bool WXDLLEXPORT operator<=(const wxDateTime &t1, const wxDateTime &t2)
+inline bool WXDLLEXPORT operator<=(const wxDateTime& t1, const wxDateTime& t2)
{
- wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
+ wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") );
return t1.GetValue() <= t2.GetValue();
}
-inline bool WXDLLEXPORT operator>(const wxDateTime &t1, const wxDateTime &t2)
+inline bool WXDLLEXPORT operator>(const wxDateTime& t1, const wxDateTime& t2)
{
- wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
+ wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") );
return t1.GetValue() > t2.GetValue();
}
-inline bool WXDLLEXPORT operator>=(const wxDateTime &t1, const wxDateTime &t2)
+inline bool WXDLLEXPORT operator>=(const wxDateTime& t1, const wxDateTime& t2)
{
- wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
+ wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") );
return t1.GetValue() >= t2.GetValue();
}
-inline bool WXDLLEXPORT operator==(const wxDateTime &t1, const wxDateTime &t2)
+inline bool WXDLLEXPORT operator==(const wxDateTime& t1, const wxDateTime& t2)
{
- wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
+ wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") );
return t1.GetValue() == t2.GetValue();
}
-inline bool WXDLLEXPORT operator!=(const wxDateTime &t1, const wxDateTime &t2)
+inline bool WXDLLEXPORT operator!=(const wxDateTime& t1, const wxDateTime& t2)
{
- wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
+ wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") );
return t1.GetValue() != t2.GetValue();
}
-inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime &t1,
- const wxDateTime &t2)
-{
- wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
-
- return wxTimeSpan(t1.GetValue() - t2.GetValue());
-}
-
// ----------------------------------------------------------------------------
// wxTimeSpan operators
// ----------------------------------------------------------------------------
+// arithmetics
+// -----------
+
inline wxTimeSpan WXDLLEXPORT operator+(const wxTimeSpan& ts1,
const wxTimeSpan& ts2)
{
return wxTimeSpan(ts1.GetValue() - ts2.GetValue());
}
+inline wxTimeSpan WXDLLEXPORT operator*(const wxTimeSpan& ts, int n)
+{
+ return wxTimeSpan(ts).Multiply(n);
+}
+
+inline wxTimeSpan WXDLLEXPORT operator*(int n, const wxTimeSpan& ts)
+{
+ return wxTimeSpan(ts).Multiply(n);
+}
+
+// comparison
+// ----------
+
inline bool WXDLLEXPORT operator<(const wxTimeSpan &t1, const wxTimeSpan &t2)
{
return t1.GetValue() < t2.GetValue();
// wxDateSpan
// ----------------------------------------------------------------------------
-inline WXDLLEXPORT wxDateSpan operator+(const wxDateSpan& rt1,
- const wxDateSpan& rt2)
+// arithmetics
+// -----------
+
+inline WXDLLEXPORT wxDateSpan operator+(const wxDateSpan& ds1,
+ const wxDateSpan& ds2)
+{
+ return wxDateSpan(ds1.GetYears() + ds2.GetYears(),
+ ds1.GetMonths() + ds2.GetMonths(),
+ ds1.GetWeeks() + ds2.GetWeeks(),
+ ds1.GetDays() + ds2.GetDays());
+}
+
+inline WXDLLEXPORT wxDateSpan operator-(const wxDateSpan& ds1,
+ const wxDateSpan& ds2)
+{
+ return wxDateSpan(ds1.GetYears() - ds2.GetYears(),
+ ds1.GetMonths() - ds2.GetMonths(),
+ ds1.GetWeeks() - ds2.GetWeeks(),
+ ds1.GetDays() - ds2.GetDays());
+}
+
+inline WXDLLEXPORT wxDateSpan operator*(const wxDateSpan& ds, int n)
+{
+ return wxDateSpan(ds).Multiply(n);
+}
+
+inline WXDLLEXPORT wxDateSpan operator*(int n, const wxDateSpan& ds)
+{
+ return wxDateSpan(ds).Multiply(n);
+}
+
+// ============================================================================
+// other helper functions
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// iteration helpers: can be used to write a for loop over enum variable like
+// this:
+// for ( m = wxDateTime::Jan; m < wxDateTime::Inv_Month; wxNextMonth(m) )
+// ----------------------------------------------------------------------------
+
+inline WXDLLEXPORT void wxNextMonth(wxDateTime::Month& m)
{
- return wxDateSpan(rt1.GetYears() + rt2.GetYears(),
- rt1.GetMonths() + rt2.GetMonths(),
- rt1.GetWeeks() + rt2.GetWeeks(),
- rt1.GetDays() + rt2.GetDays());
+ wxASSERT_MSG( m < wxDateTime::Inv_Month, _T("invalid month") );
+
+ // no wrapping or the for loop above would never end!
+ m = (wxDateTime::Month)(m + 1);
+}
+
+inline WXDLLEXPORT void wxPrevMonth(wxDateTime::Month& m)
+{
+ wxASSERT_MSG( m < wxDateTime::Inv_Month, _T("invalid month") );
+
+ m = m == wxDateTime::Jan ? wxDateTime::Inv_Month
+ : (wxDateTime::Month)(m - 1);
+}
+
+inline WXDLLEXPORT void wxNextWDay(wxDateTime::WeekDay& wd)
+{
+ wxASSERT_MSG( wd < wxDateTime::Inv_WeekDay, _T("invalid week day") );
+
+ // no wrapping or the for loop above would never end!
+ wd = (wxDateTime::WeekDay)(wd + 1);
+}
+
+inline WXDLLEXPORT void wxPrevWDay(wxDateTime::WeekDay& wd)
+{
+ wxASSERT_MSG( wd < wxDateTime::Inv_WeekDay, _T("invalid week day") );
+
+ wd = wd == wxDateTime::Sun ? wxDateTime::Inv_WeekDay
+ : (wxDateTime::WeekDay)(wd - 1);
}
#endif // _WX_DATETIME_H
projects / wxWidgets.git / blobdiff