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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
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#ifndef _I18N_CALENDAR_HIJRI_HXX_
#define _I18N_CALENDAR_HIJRI_HXX_

#include "calendar_gregorian.hxx"


//	----------------------------------------------------
//	class Calendar_hijri
//	----------------------------------------------------

namespace com { namespace sun { namespace star { namespace i18n {

class Calendar_hijri : public Calendar_gregorian
{
public:

	// Constructors
	Calendar_hijri();

protected:
	void mapToGregorian() throw(com::sun::star::uno::RuntimeException);
	void mapFromGregorian() throw(com::sun::star::uno::RuntimeException);

	// radians per degree (pi/180)
	static const double RadPerDeg;

	// Synodic Period (mean time between 2 successive new moon: 29d, 12 hr, 44min, 3sec
	static const double SynPeriod;

	static const double SynMonth;			// Solar days in a year/SynPeriod

	// Julian day on Jan 1, 1900
	static const double jd1900;

	// Reference point: September 1984 25d 3h 10m UT. == 1405 Hijri == 1048 Synodial month from 1900
	static const sal_Int32 SynRef;
	static const sal_Int32 GregRef;

	// Local time (Saudi Arabia)
	static const double SA_TimeZone;		// Time Zone

	// Period between 1.30pm - 6:30pm
	static const double EveningPeriod;
	
	// "Leap" years
	static const sal_Int32 LeapYear[];

private:
	double NewMoon(sal_Int32 n);
	void getHijri(sal_Int32 *day, sal_Int32 *month, sal_Int32 *year);
	void ToGregorian(sal_Int32 *day, sal_Int32 *month, sal_Int32 *year);
	void getGregorianDay(sal_Int32 jd, sal_Int32 *pnDay, sal_Int32 *pnMonth, sal_Int32 *pnYear);
	double getJulianDay(sal_Int32 day, sal_Int32 month, sal_Int32 year);
};

} } } }

#endif