| 1 | // Copyright (C) 2020 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #include "qglobal.h" |
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| 5 | #include "qhijricalendar_p.h" |
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| 6 | #include "qhijricalendar_data_p.h" |
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| 7 | |
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| 8 | QT_BEGIN_NAMESPACE |
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| 9 | |
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| 10 | /*! |
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| 11 | \since 5.14 |
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| 12 | \internal |
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| 13 | |
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| 14 | \class QHijriCalendar |
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| 15 | \inmodule QtCore |
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| 16 | \brief The QHijriCalendar class supports Islamic (Hijri) calendar implementations. |
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| 17 | |
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| 18 | \section1 Islamic Calendar System |
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| 19 | |
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| 20 | The Islamic, Muslim, or Hijri calendar is a lunar calendar consisting of 12 |
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| 21 | months in a year of 354 or 355 days. It is used (often alongside the |
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| 22 | Gregorian calendar) to date events in many Muslim countries. It is also used |
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| 23 | by Muslims to determine the proper days of Islamic holidays and rituals, |
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| 24 | such as the annual period of fasting and the proper time for the pilgrimage |
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| 25 | to Mecca. |
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| 26 | |
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| 27 | Source: \l {https://en.wikipedia.org/wiki/Islamic_calendar}{Wikipedia page |
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| 28 | on Hijri Calendar} |
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| 29 | |
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| 30 | \section1 Support for variants |
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| 31 | |
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| 32 | This base class provides the common details shared by all variants on the |
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| 33 | Islamic calendar. Each year comprises 12 months of 29 or 30 days each; most |
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| 34 | years have as many of 29 as of 30, but leap years extend one 29-day month to |
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| 35 | 30 days. In tabular versions of the calendar (where mathematical rules are |
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| 36 | used to determine the details), odd-numbered months have 30 days, as does |
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| 37 | the last (twelfth) month of a leap year; all other months have 29 |
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| 38 | days. Other versions are based on actual astronomical observations of the |
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| 39 | moon's phase at sunset, which vary from place to place. |
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| 40 | |
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| 41 | \sa QIslamicCivilCalendar, QCalendar |
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| 42 | */ |
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| 43 | |
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| 44 | bool QHijriCalendar::isLunar() const |
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| 45 | { |
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| 46 | return true; |
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| 47 | } |
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| 48 | |
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| 49 | bool QHijriCalendar::isLuniSolar() const |
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| 50 | { |
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| 51 | return false; |
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| 52 | } |
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| 53 | |
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| 54 | bool QHijriCalendar::isSolar() const |
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| 55 | { |
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| 56 | return false; |
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| 57 | } |
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| 58 | |
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| 59 | int QHijriCalendar::daysInMonth(int month, int year) const |
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| 60 | { |
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| 61 | if (year == 0 || month < 1 || month > 12) |
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| 62 | return 0; |
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| 63 | |
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| 64 | if (month == 12 && isLeapYear(year)) |
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| 65 | return 30; |
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| 66 | |
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| 67 | return month % 2 == 0 ? 29 : 30; |
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| 68 | } |
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| 69 | |
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| 70 | int QHijriCalendar::maximumDaysInMonth() const |
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| 71 | { |
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| 72 | return 30; |
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| 73 | } |
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| 74 | |
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| 75 | int QHijriCalendar::daysInYear(int year) const |
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| 76 | { |
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| 77 | return monthsInYear(year) ? isLeapYear(year) ? 355 : 354 : 0; |
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| 78 | } |
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| 79 | |
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| 80 | const QCalendarLocale *QHijriCalendar::localeMonthIndexData() const |
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| 81 | { |
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| 82 | return QtPrivate::Hijri::locale_data; |
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| 83 | } |
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| 84 | |
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| 85 | const char16_t *QHijriCalendar::localeMonthData() const |
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| 86 | { |
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| 87 | return QtPrivate::Hijri::months_data; |
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| 88 | } |
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| 89 | |
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| 90 | QT_END_NAMESPACE |
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| 91 | |
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