i18npool/inc/calendar_hijri.hxx

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  19 #ifndef INCLUDED_I18NPOOL_INC_CALENDAR_HIJRI_HXX
  20 #define INCLUDED_I18NPOOL_INC_CALENDAR_HIJRI_HXX
  21
  22 #include "calendar_gregorian.hxx"
  23
  24
  25 //  class Calendar_hijri
  26
  27
  28 namespace i18npool {
  29
  30 class Calendar_hijri : public Calendar_gregorian
  31 {
  32 public:
  33
  34     // Constructors
  35     Calendar_hijri();
  36
  37 protected:
  38     void mapToGregorian() override;
  39     void mapFromGregorian() override;
  40
  41     // radians per degree (pi/180)
  42     static const double RadPerDeg;
  43
  44     // Synodic Period (mean time between 2 successive new moon: 29d, 12 hr, 44min, 3sec
  45     static const double SynPeriod;
  46
  47     static const double SynMonth;           // Solar days in a year/SynPeriod
  48
  49     // Julian day on Jan 1, 1900
  50     static const double jd1900;
  51
  52     // Reference point: September 1984 25d 3h 10m UT. == 1405 Hijri == 1048 Synodial month from 1900
  53     static const sal_Int32 SynRef;
  54     static const sal_Int32 GregRef;
  55
  56     // Local time (Saudi Arabia)
  57     static const double SA_TimeZone;        // Time Zone
  58
  59     // Period between 1.30pm - 6:30pm
  60     static const double EveningPeriod;
  61
  62     // "Leap" years
  63     static const sal_Int32 LeapYear[];
  64
  65 private:
  66     static double NewMoon(sal_Int32 n);
  67     static void getHijri(sal_Int32 *day, sal_Int32 *month, sal_Int32 *year);
  68     static void ToGregorian(sal_Int32 *day, sal_Int32 *month, sal_Int32 *year);
  69     static void getGregorianDay(sal_Int32 jd, sal_Int32 *pnDay, sal_Int32 *pnMonth, sal_Int32 *pnYear);
  70     static sal_Int32 getJulianDay(sal_Int32 day, sal_Int32 month, sal_Int32 year);
  71 };
  72
  73 }
  74
  75 #endif
  76
  77 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */