127 lines
4.1 KiB
C++
127 lines
4.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2020 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qglobal.h"
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#include "qhijricalendar_p.h"
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#include "qhijricalendar_data_p.h"
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QT_BEGIN_NAMESPACE
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/*!
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\since 5.14
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\internal
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\class QHijriCalendar
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\inmodule QtCore
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\brief The QHijriCalendar class supports Islamic (Hijri) calendar implementations.
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\section1 Islamic Calendar System
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The Islamic, Muslim, or Hijri calendar is a lunar calendar consisting of 12
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months in a year of 354 or 355 days. It is used (often alongside the
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Gregorian calendar) to date events in many Muslim countries. It is also used
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by Muslims to determine the proper days of Islamic holidays and rituals,
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such as the annual period of fasting and the proper time for the pilgrimage
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to Mecca.
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Source: \l {https://en.wikipedia.org/wiki/Islamic_calendar}{Wikipedia page
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on Hijri Calendar}
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\section1 Support for variants
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This base class provides the common details shared by all variants on the
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Islamic calendar. Each year comprises 12 months of 29 or 30 days each; most
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years have as many of 29 as of 30, but leap years extend one 29-day month to
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30 days. In tabular versions of the calendar (where mathematical rules are
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used to determine the details), odd-numbered months have 30 days, as does
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the last (twelfth) month of a leap year; all other months have 29
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days. Other versions are based on actual astronomical observations of the
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moon's phase at sunset, which vary from place to place.
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\sa QIslamicCivilCalendar, QCalendar
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*/
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bool QHijriCalendar::isLunar() const
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{
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return true;
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}
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bool QHijriCalendar::isLuniSolar() const
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{
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return false;
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}
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bool QHijriCalendar::isSolar() const
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{
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return false;
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}
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int QHijriCalendar::daysInMonth(int month, int year) const
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{
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if (year == 0 || month < 1 || month > 12)
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return 0;
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if (month == 12 && isLeapYear(year))
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return 30;
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return month % 2 == 0 ? 29 : 30;
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}
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int QHijriCalendar::maximumDaysInMonth() const
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{
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return 30;
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}
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int QHijriCalendar::daysInYear(int year) const
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{
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return monthsInYear(year) ? isLeapYear(year) ? 355 : 354 : 0;
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}
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const QCalendarLocale *QHijriCalendar::localeMonthIndexData() const
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{
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return locale_data;
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}
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const char16_t *QHijriCalendar::localeMonthData() const
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{
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return months_data;
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}
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QT_END_NAMESPACE
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