pimappsupport/chinesecalendaralg/originalinc/calconv.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:42:35 +0200
branchRCL_3
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// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#ifndef __CALCONV_H__
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#define __CALCONV_H__
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// User includes
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#include "calconvAstronomicalCal.h"
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#include "calconvArithmeticalCal.h"
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// Constants
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const TInt KCalConInvalidDate = -50000; // invalid date error code
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// Classes referenced
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class TChineseDate;
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class TArithmeticalDate;
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class TChineseCalendar : public TAstronomicalCalendar  
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{
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public:
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	IMPORT_C TChineseCalendar();
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	IMPORT_C void DateTimeToChinese(const TDateTime& aDT);
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	IMPORT_C void ChineseToDateTime(TDateTime& aDT);
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	IMPORT_C TInt SetDate(const TChineseDate& aDate);
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	IMPORT_C void GetDate(TChineseDate& aDate);
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private:
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	void ChineseToFixed(const TChineseDate& aDate, TReal& aJulianDay) const;
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	void ChineseFromFixed(TChineseDate& aDate,const TReal& aJulianDay) const;
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	TReal ChineseNewYear(TInt aYear) const;
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	TBool NoMajorSolarTerm(TReal aJulianDay) const;
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	TBool PriorLeapMonth(TReal& aMnthprime, TReal aMnth) const;
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	TInt ChineseNewMoonOnOrAfter(TReal aJulianDay) const;
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	TInt ChineseNewMoonBefore(TReal aJulianDay) const;
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	TReal MajorSolarTermOnOrAfter(TReal& aJulianDay) const;
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	TInt ChineseDateNextSolarLongitude(TReal& aJulianDay, const TReal& aDegrees) const;
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	TReal ChineseTimeZone(const TReal& aJulianDay) const;
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	TReal CurrentMajorSolarTerm(TReal& aJulianDay) const;
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	TBool ValidDate(const TChineseDate& aDate) const;
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	};
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class TGregorianCalendar : public TArithmeticalCalendar
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	{
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public:
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	IMPORT_C TGregorianCalendar();
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	IMPORT_C TGregorianCalendar(TReal aJulianDay);
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	IMPORT_C void GregorianToDateTime(TDateTime& aDT);
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	IMPORT_C void DateTimeToGregorian(TDateTime& aDT);
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	IMPORT_C void GetDate(TArithmeticalDate& aDate);
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	IMPORT_C TInt SetDate(TArithmeticalDate& aGregDate);
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private:
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	void GregFromJulianDay(TArithmeticalDate& aDate, TReal aJulianDay) const;
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	void InitMembers();
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	TInt DayNumber(const TArithmeticalDate& aDate) const;
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	void CalcGregYear(TArithmeticalDate& aDate, TReal aJulianDay) const;
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	TBool IsLeapYear(const TInt aYear) const;
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	TReal GregToJulianDay(const TArithmeticalDate& aYear) const;
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	TInt GregDateDiff(const TArithmeticalDate aDate1, const TArithmeticalDate aDate2) const;
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	TBool ValidDate(const TArithmeticalDate& aDate) const;
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private:
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	friend class TAstronomicalCalendar;
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	friend class TChineseCalendar;
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	};
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class TChineseDate  
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{
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public:
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	IMPORT_C TChineseDate();
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	IMPORT_C TBool operator==(const TChineseDate& aDate) const;
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public:
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	TInt iCycle;
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	TInt iYear;
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	TInt iMonth;
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	TBool iLeapMonth;
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	TInt iDay;
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};
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class TArithmeticalDate  
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{
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public:
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	IMPORT_C TArithmeticalDate();
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	IMPORT_C TBool operator==(const TArithmeticalDate& aDate) const;
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public:
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	TInt iDay;
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	TInt iMonth;
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	TInt iYear;
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};
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#endif