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 KCALENDARSYSTEMJULIAN_H
21#define KCALENDARSYSTEMJULIAN_H
22
23#include "kcalendarsystem.h"
24
25class KCalendarSystemJulianPrivate;
26
27/**
28 * @internal
29 * This is the Julian calendar implementation.
30 *
31 * WARNING: This is a proleptic version of the Julian calendar, it does not
32 * reflect the historic marking of leap years prior to 4 AD and always
33 * uses New Style years with 1 Jan for the start of the year.
34 *
35 * @b license GNU-LGPL v.2 or later
36 *
37 * @see KLocale,KCalendarSystem
38 *
39 * @author John Layt <john@layt.net>
40 */
41class KCalendarSystemJulian: public KCalendarSystem
42{
43public:
44 explicit KCalendarSystemJulian(const KLocale *locale = 0);
45 explicit KCalendarSystemJulian(const KSharedConfig::Ptr config, const KLocale *locale = 0);
46 virtual ~KCalendarSystemJulian();
47
48 virtual QString calendarType() const;
49
50 virtual QDate epoch() const;
51 virtual QDate earliestValidDate() const;
52 virtual QDate latestValidDate() const;
53 virtual bool isValid(int year, int month, int day) const;
54 virtual bool isValid(const QDate &date) const;
55
56 virtual bool isLeapYear(int year) const;
57 virtual bool isLeapYear(const QDate &date) const;
58
59 virtual QString monthName(int month, int year, MonthNameFormat format = LongName) const;
60 virtual QString monthName(const QDate &date, MonthNameFormat format = LongName) const;
61
62 virtual QString weekDayName(int weekDay, WeekDayNameFormat format = LongDayName) const;
63 virtual QString weekDayName(const QDate &date, WeekDayNameFormat format = LongDayName) const;
64
65 virtual int weekDayOfPray() const;
66
67 virtual bool isLunar() const;
68 virtual bool isLunisolar() const;
69 virtual bool isSolar() const;
70 virtual bool isProleptic() const;
71
72protected:
73 virtual bool julianDayToDate(int jd, int &year, int &month, int &day) const;
74 virtual bool dateToJulianDay(int year, int month, int day, int &jd) const;
75 KCalendarSystemJulian(KCalendarSystemJulianPrivate &dd,
76 const KSharedConfig::Ptr config = KSharedConfig::Ptr(),
77 const KLocale *locale = 0);
78
79private:
80 Q_DECLARE_PRIVATE(KCalendarSystemJulian)
81};
82
83#endif // KCALENDARSYSTEMJULIAN_H
84