X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1ef54dcf125ad687ccfd32195fe2f449910e7d5f..8eb2940f7f226b068007928465096e2b9bec67d0:/include/wx/datetime.h diff --git a/include/wx/datetime.h b/include/wx/datetime.h index 23909f3d61..d0de3f9773 100644 --- a/include/wx/datetime.h +++ b/include/wx/datetime.h @@ -37,13 +37,14 @@ class WXDLLEXPORT wxDateSpan; /* * TODO Well, everything :-) * - * 1. Time zones with minutes (make wxTimeZone a class) - * 2. getdate() function like under Solaris - * 3. text conversion for wxDateSpan + * + 1. Time zones with minutes (make TimeZone a class) + * 2. getdate() function like under Solaris + * + 3. text conversion for wxDateSpan + * 4. pluggable modules for the workdays calculations */ /* - The three classes declared in this header represent: + The three (main) classes declared in this header represent: 1. An absolute moment in the time (wxDateTime) 2. A difference between two moments in the time, positive or negative @@ -64,22 +65,34 @@ class WXDLLEXPORT wxDateSpan; 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 @@ -88,13 +101,16 @@ public: // 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 { @@ -294,10 +310,22 @@ public: { 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 }; @@ -319,9 +347,31 @@ public: 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 // ------------------------------------------------------------------------ + // a class representing a time zone: basicly, this is just an offset + // (in seconds) from GMT + class TimeZone + { + public: + TimeZone(TZ tz); + TimeZone(wxDateTime_t offset = 0) { m_offset = offset; } + + long GetOffset() const { return m_offset; } + + private: + // offset for this timezone from GMT in seconds + long m_offset; + }; + // standard struct tm is limited to the years from 1900 (because // tm_year field is the offset from 1900), so we use our own struct // instead to represent broken down time @@ -338,8 +388,8 @@ public: // default ctor inits the object to an invalid value Tm(); - // ctor from struct tm - Tm(const struct tm& tm); + // ctor from struct tm and the timezone + Tm(const struct tm& tm, const TimeZone& tz); // check that the given date/time is valid (in Gregorian calendar) bool IsValid() const; @@ -363,33 +413,25 @@ public: // compute the weekday from other fields void ComputeWeekDay(); + // the timezone we correspond to + TimeZone m_tz; + // these values can't be accessed directly because they're not always // computed and we calculate them on demand wxDateTime_t wday, yday; }; - // a class representing a time zone: basicly, this is just an offset - // (in minutes) from GMT - class TimeZone - { - public: - TimeZone(TZ tz); - TimeZone(wxDateTime_t offset) { m_offset = offset; } - - int GetOffset() const { return m_offset; } - - private: - // offset for this timezone from GMT in minutes - int m_offset; - }; - // static methods // ------------------------------------------------------------------------ // 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); @@ -421,30 +463,42 @@ public: // 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. - // - // All new wxDateTime correspond to the local time, use ToUTC() or - // MakeUTC() to get the time in UTC/GMT. // ------------------------------------------------------------------------ // default ctor does not initialize the object, use Set()! @@ -550,6 +604,15 @@ public: // 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 @@ -574,6 +637,9 @@ public: 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 @@ -599,6 +665,13 @@ public: // 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; @@ -607,27 +680,28 @@ public: // religious holidays (Easter...) or moon/solar eclipses? Some // algorithms can be found in the calendar FAQ - // timezone stuff: by default, we always work with local times, to get - // anything else, it should be requested explicitly + // timezone stuff: a wxDateTime object constructed using given + // day/month/year/hour/min/sec values correspond to this moment in local + // time. Using the functions below, it may be converted to another time + // zone (for example, the Unix epoch is wxDateTime(1, Jan, 1970).ToGMT()) + // + // Converting to the local time zone doesn't do anything. // ------------------------------------------------------------------------ - // transform this object to UTC/GMT - wxDateTime& MakeUTC(); - wxDateTime& MakeGMT() { return MakeUTC(); } - - // get the time corresponding to this one in UTC/GMT - inline wxDateTime ToUTC() const; - wxDateTime ToGMT() const { return ToUTC(); } - - // generic versions of the above - - // transform from local time to any given timezone + // transform to any given timezone inline wxDateTime ToTimezone(const TimeZone& tz) const; wxDateTime& MakeTimezone(const TimeZone& tz); - // transform time from any timezone to the local time - inline wxDateTime ToLocalTime(const TimeZone& tz) const; - wxDateTime& MakeLocalTime(const TimeZone& tz); + // transform to GMT/UTC + 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 @@ -640,40 +714,55 @@ public: // the functions which failed to convert the date to supported range) inline bool IsValid() const { return this != &ms_InvDateTime; } - // get the broken down date/time representation - Tm GetTm() const; + // get the broken down date/time representation in the given timezone + // + // If you wish to get several time components (day, month and year), + // consider getting the whole Tm strcuture first and retrieving the + // value from it - this is much more efficient + Tm GetTm(const TimeZone& tz = Local) const; // get the number of seconds since the Unix epoch - returns (time_t)-1 // if the value is out of range inline time_t GetTicks() const; // get the year (returns Inv_Year if date is invalid) - int GetYear() const { return GetTm().year; } + int GetYear(const TimeZone& tz = Local) const + { return GetTm(tz).year; } // get the month (Inv_Month if date is invalid) - Month GetMonth() const { return (Month)GetTm().mon; } + Month GetMonth(const TimeZone& tz = Local) const + { return (Month)GetTm(tz).mon; } // get the month day (in 1..31 range, 0 if date is invalid) - wxDateTime_t GetDay() const { return GetTm().mday; } + wxDateTime_t GetDay(const TimeZone& tz = Local) const + { return GetTm(tz).mday; } // get the day of the week (Inv_WeekDay if date is invalid) - WeekDay GetWeekDay() const { return GetTm().GetWeekDay(); } + WeekDay GetWeekDay(const TimeZone& tz = Local) const + { return GetTm(tz).GetWeekDay(); } // get the hour of the day - wxDateTime_t GetHour() const { return GetTm().hour; } + wxDateTime_t GetHour(const TimeZone& tz = Local) const + { return GetTm(tz).hour; } // get the minute - wxDateTime_t GetMinute() const { return GetTm().min; } + wxDateTime_t GetMinute(const TimeZone& tz = Local) const + { return GetTm(tz).min; } // get the second - wxDateTime_t GetSecond() const { return GetTm().sec; } + wxDateTime_t GetSecond(const TimeZone& tz = Local) const + { return GetTm(tz).sec; } // get milliseconds - wxDateTime_t GetMillisecond() const { return m_time.GetLo() % 1000; } + wxDateTime_t GetMillisecond(const TimeZone& tz = Local) const + { return GetTm(tz).msec; } // get the day since the year start (1..366, 0 if date is invalid) - wxDateTime_t GetDayOfYear() const; - // get the week number since the year start (1..52, 0 if date is + wxDateTime_t GetDayOfYear(const TimeZone& tz = Local) const; + // get the week number since the year start (1..52 or 53, 0 if date is // invalid) - wxDateTime_t GetWeekOfYear() const; + 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 bool IsWorkDay(Country country = Country_Default, - TimeZone zone = Local) const; + const TimeZone& tz = Local) const; // is this date later than Gregorian calendar introduction for the // given country (see enum GregorianAdoption)? @@ -683,24 +772,12 @@ public: // adoption of the Gregorian calendar is simply unknown. bool IsGregorianDate(GregorianAdoption country = Gr_Standard) const; - // is daylight savings time in effect at this moment? - // - // 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, TimeZone zone = Local) 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; @@ -714,54 +791,79 @@ public: // 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 // for the current locale) and returns the string containing the // resulting text representation - wxString Format(const wxChar *format = _T("%c")) const; + wxString Format(const wxChar *format = _T("%c"), + const TimeZone& tz = Local) const; // preferred date representation for the current locale wxString FormatDate() const { return Format(_T("%x")); } // preferred time representation for the current locale @@ -770,6 +872,9 @@ public: // implementation // ------------------------------------------------------------------------ + // construct from internal representation + wxDateTime(const wxLongLong& time) { m_time = time; } + // get the internal representation inline wxLongLong GetValue() const; @@ -780,7 +885,7 @@ public: static struct tm *GetTmNow() { time_t t = GetTimeNow(); - return gmtime(&t); + return localtime(&t); } private: @@ -792,7 +897,7 @@ private: // 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 @@ -822,12 +927,23 @@ public: // 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() { } @@ -840,32 +956,33 @@ public: 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()); } @@ -940,6 +1057,9 @@ public: // implementation // ------------------------------------------------------------------------ + // construct from internal representation + wxTimeSpan(const wxLongLong& diff) { m_diff = diff; } + // get the internal representation wxLongLong GetValue() const { return m_diff; } @@ -989,15 +1109,19 @@ public: // 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 @@ -1026,14 +1150,18 @@ public: // 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 @@ -1046,8 +1174,12 @@ public: // 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& Multiply(int factor); // multiply all components by a (signed) number - inline wxDateSpan& operator*=(int factor); + inline wxDateSpan& operator*=(int factor) { return Multiply(factor); } private: int m_years, @@ -1086,60 +1218,93 @@ WXDLLEXPORT_DATA(extern wxDateSpan) wxDay; // 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) { - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); + 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) +{ + 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) { @@ -1152,6 +1317,19 @@ inline wxTimeSpan WXDLLEXPORT operator-(const wxTimeSpan& ts1, 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(); @@ -1186,13 +1364,77 @@ inline bool WXDLLEXPORT operator!=(const wxTimeSpan &t1, const wxTimeSpan &t2) // 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) +{ + 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) { - return wxDateSpan(rt1.GetYears() + rt2.GetYears(), - rt1.GetMonths() + rt2.GetMonths(), - rt1.GetWeeks() + rt2.GetWeeks(), - rt1.GetDays() + rt2.GetDays()); + 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