1/*
2 Copyright 2009, 2010 John Layt <john@layt.net>
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to
16 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 Boston, MA 02110-1301, USA.
18*/
19
20#ifndef KCALENDARSYSTEMGREGORIAN_H
21#define KCALENDARSYSTEMGREGORIAN_H
22
23#include "kcalendarsystem.h"
24
25class KCalendarSystemGregorianPrivate;
26
27/**
28 * @internal
29 * This is the pure Gregorian calendar implementation.
30 *
31 * Note: This is a proleptic version of the Gregorian calendar, it does not
32 * copy the QDate method of using the Julian Calendar for dates before 15
33 * October 1582. This is the traditional proleptic Gregorian calendar
34 * that does not have a year 0, unlike the ISO version which does.
35 *
36 * @b license GNU-LGPL v.2 or later
37 *
38 * @see KLocale,KCalendarSystem
39 *
40 * @author John Layt <john@layt.net>
41 */
42class KCalendarSystemGregorian: public KCalendarSystem
43{
44public:
45 explicit KCalendarSystemGregorian(const KLocale *locale = 0);
46 explicit KCalendarSystemGregorian(const KSharedConfig::Ptr config, const KLocale *locale = 0);
47 virtual ~KCalendarSystemGregorian();
48
49 virtual QString calendarType() const;
50
51 virtual QDate epoch() const;
52 virtual QDate earliestValidDate() const;
53 virtual QDate latestValidDate() const;
54 virtual bool isValid(int year, int month, int day) const;
55 virtual bool isValid(const QDate &date) const;
56
57 virtual bool isLeapYear(int year) const;
58 virtual bool isLeapYear(const QDate &date) const;
59
60 virtual QString monthName(int month, int year, MonthNameFormat format = LongName) const;
61 virtual QString monthName(const QDate &date, MonthNameFormat format = LongName) const;
62
63 virtual QString weekDayName(int weekDay, WeekDayNameFormat format = LongDayName) const;
64 virtual QString weekDayName(const QDate &date, WeekDayNameFormat format = LongDayName) const;
65
66 virtual int yearStringToInteger(const QString &sNum, int &iLength) const;
67
68 virtual int weekDayOfPray() const;
69
70 virtual bool isLunar() const;
71 virtual bool isLunisolar() const;
72 virtual bool isSolar() const;
73 virtual bool isProleptic() const;
74
75protected:
76 virtual bool julianDayToDate(int jd, int &year, int &month, int &day) const;
77 virtual bool dateToJulianDay(int year, int month, int day, int &jd) const;
78 KCalendarSystemGregorian(KCalendarSystemGregorianPrivate &dd,
79 const KSharedConfig::Ptr config = KSharedConfig::Ptr(),
80 const KLocale *locale = 0);
81
82private:
83 friend class KCalendarSystemIndianNational; // To allow access to julianDayToDate() and dateToJulianDay()
84 Q_DECLARE_PRIVATE(KCalendarSystemGregorian)
85};
86
87#endif // KCALENDARSYSTEMGREGORIAN_H
88