// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef __CALCONV_H__

#define __CALCONV_H__

// User includes

#include "calconvAstronomicalCal.h"

#include "calconvArithmeticalCal.h"

// Constants

const TInt KCalConInvalidDate = -50000; // invalid date error code

// Classes referenced

class TChineseDate;

class TArithmeticalDate;

class TChineseCalendar : public TAstronomicalCalendar  

{

public:

	IMPORT_C TChineseCalendar();

	IMPORT_C void DateTimeToChinese(const TDateTime& aDT);

	IMPORT_C void ChineseToDateTime(TDateTime& aDT);

	IMPORT_C TInt SetDate(const TChineseDate& aDate);

	IMPORT_C void GetDate(TChineseDate& aDate);

private:

	void ChineseToFixed(const TChineseDate& aDate, TReal& aJulianDay) const;

	void ChineseFromFixed(TChineseDate& aDate,const TReal& aJulianDay) const;

	TReal ChineseNewYear(TInt aYear) const;

	TBool NoMajorSolarTerm(TReal aJulianDay) const;

	TBool PriorLeapMonth(TReal& aMnthprime, TReal aMnth) const;

	TInt ChineseNewMoonOnOrAfter(TReal aJulianDay) const;

	TInt ChineseNewMoonBefore(TReal aJulianDay) const;

	TReal MajorSolarTermOnOrAfter(TReal& aJulianDay) const;

	TInt ChineseDateNextSolarLongitude(TReal& aJulianDay, const TReal& aDegrees) const;

	TReal ChineseTimeZone(const TReal& aJulianDay) const;

	TReal CurrentMajorSolarTerm(TReal& aJulianDay) const;

	TBool ValidDate(const TChineseDate& aDate) const;

	};

class TGregorianCalendar : public TArithmeticalCalendar

	{

public:

	IMPORT_C TGregorianCalendar();

	IMPORT_C TGregorianCalendar(TReal aJulianDay);

	IMPORT_C void GregorianToDateTime(TDateTime& aDT);

	IMPORT_C void DateTimeToGregorian(TDateTime& aDT);

	IMPORT_C void GetDate(TArithmeticalDate& aDate);

	IMPORT_C TInt SetDate(TArithmeticalDate& aGregDate);

private:

	void GregFromJulianDay(TArithmeticalDate& aDate, TReal aJulianDay) const;

	void InitMembers();

	TInt DayNumber(const TArithmeticalDate& aDate) const;

	void CalcGregYear(TArithmeticalDate& aDate, TReal aJulianDay) const;

	TBool IsLeapYear(const TInt aYear) const;

	TReal GregToJulianDay(const TArithmeticalDate& aYear) const;

	TInt GregDateDiff(const TArithmeticalDate aDate1, const TArithmeticalDate aDate2) const;

	TBool ValidDate(const TArithmeticalDate& aDate) const;

private:

	friend class TAstronomicalCalendar;

	friend class TChineseCalendar;

	};

class TChineseDate  

{

public:

	IMPORT_C TChineseDate();

	IMPORT_C TBool operator==(const TChineseDate& aDate) const;

public:

	TInt iCycle;

	TInt iYear;

	TInt iMonth;

	TBool iLeapMonth;

	TInt iDay;

};

class TArithmeticalDate  

{

public:

	IMPORT_C TArithmeticalDate();

	IMPORT_C TBool operator==(const TArithmeticalDate& aDate) const;

public:

	TInt iDay;

	TInt iMonth;

	TInt iYear;

};

#endif