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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

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

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __CALCONV_H__

    17 #define __CALCONV_H__

    18 

    19 // User includes

    20 #include "calconvAstronomicalCal.h"

    21 #include "calconvArithmeticalCal.h"

    22 

    23 // Constants

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

    25 

    26 // Classes referenced

    27 class TChineseDate;

    28 class TArithmeticalDate;

    29 

    30 

    31 class TChineseCalendar : public TAstronomicalCalendar  

    32 {

    33 public:

    34 	IMPORT_C TChineseCalendar();

    35 	IMPORT_C void DateTimeToChinese(const TDateTime& aDT);

    36 	IMPORT_C void ChineseToDateTime(TDateTime& aDT);

    37 	IMPORT_C TInt SetDate(const TChineseDate& aDate);

    38 	IMPORT_C void GetDate(TChineseDate& aDate);

    39 

    40 private:

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

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

    43 	TReal ChineseNewYear(TInt aYear) const;

    44 	TBool NoMajorSolarTerm(TReal aJulianDay) const;

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

    46 	TInt ChineseNewMoonOnOrAfter(TReal aJulianDay) const;

    47 	TInt ChineseNewMoonBefore(TReal aJulianDay) const;

    48 	TReal MajorSolarTermOnOrAfter(TReal& aJulianDay) const;

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

    50 	TReal ChineseTimeZone(const TReal& aJulianDay) const;

    51 	TReal CurrentMajorSolarTerm(TReal& aJulianDay) const;

    52 	TBool ValidDate(const TChineseDate& aDate) const;

    53 	};

    54 

    55 class TGregorianCalendar : public TArithmeticalCalendar

    56 	{

    57 public:

    58 	IMPORT_C TGregorianCalendar();

    59 	IMPORT_C TGregorianCalendar(TReal aJulianDay);

    60 	IMPORT_C void GregorianToDateTime(TDateTime& aDT);

    61 	IMPORT_C void DateTimeToGregorian(TDateTime& aDT);

    62 	IMPORT_C void GetDate(TArithmeticalDate& aDate);

    63 	IMPORT_C TInt SetDate(TArithmeticalDate& aGregDate);

    64 

    65 private:

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

    67 	void InitMembers();

    68 	TInt DayNumber(const TArithmeticalDate& aDate) const;

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

    70 	TBool IsLeapYear(const TInt aYear) const;

    71 	TReal GregToJulianDay(const TArithmeticalDate& aYear) const;

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

    73 	TBool ValidDate(const TArithmeticalDate& aDate) const;

    74 

    75 private:

    76 	friend class TAstronomicalCalendar;

    77 	friend class TChineseCalendar;

    78 	};

    79 

    80 class TChineseDate  

    81 {

    82 public:

    83 	IMPORT_C TChineseDate();

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

    85 

    86 public:

    87 	TInt iCycle;

    88 	TInt iYear;

    89 	TInt iMonth;

    90 	TBool iLeapMonth;

    91 	TInt iDay;

    92 };

    93 

    94 class TArithmeticalDate  

    95 {

    96 public:

    97 	IMPORT_C TArithmeticalDate();

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

    99 

   100 public:

   101 	TInt iDay;

   102 	TInt iMonth;

   103 	TInt iYear;

   104 };

   105 

   106 

   107 #endif