| 1 | // Copyright (C) 2021 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 | #ifndef QGREGORIAN_CALENDAR_P_H |
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| 5 | #define QGREGORIAN_CALENDAR_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists for the convenience |
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| 12 | // of calendar implementations. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include "qromancalendar_p.h" |
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| 19 | |
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| 20 | #include <optional> |
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| 21 | |
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| 22 | QT_BEGIN_NAMESPACE |
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| 23 | |
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| 24 | class Q_CORE_EXPORT QGregorianCalendar : public QRomanCalendar |
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| 25 | { |
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| 26 | // TODO: provide static methods, called by the overrides, that can be called |
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| 27 | // directly by QDate to optimize various parts. |
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| 28 | public: |
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| 29 | // Calendar property: |
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| 30 | QString name() const override; |
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| 31 | static QStringList nameList(); |
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| 32 | // Date queries: |
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| 33 | bool isLeapYear(int year) const override; |
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| 34 | // Julian Day conversions: |
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| 35 | bool dateToJulianDay(int year, int month, int day, qint64 *jd) const override; |
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| 36 | QCalendar::YearMonthDay julianDayToDate(qint64 jd) const override; |
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| 37 | |
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| 38 | // Names of months (implemented in qlocale.cpp): |
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| 39 | QString monthName(const QLocale &locale, int month, int year, |
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| 40 | QLocale::FormatType format) const override; |
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| 41 | QString standaloneMonthName(const QLocale &locale, int month, int year, |
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| 42 | QLocale::FormatType format) const override; |
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| 43 | |
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| 44 | // Static optimized versions for the benefit of QDate: |
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| 45 | static int weekDayOfJulian(qint64 jd); |
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| 46 | static bool leapTest(int year); |
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| 47 | static int monthLength(int month, int year); |
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| 48 | static bool validParts(int year, int month, int day); |
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| 49 | static QCalendar::YearMonthDay partsFromJulian(qint64 jd); |
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| 50 | static std::optional<qint64> julianFromParts(int year, int month, int day); |
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| 51 | // Used internally: |
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| 52 | static int yearStartWeekDay(int year); |
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| 53 | static int yearSharingWeekDays(QDate date); |
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| 54 | }; |
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| 55 | |
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| 56 | QT_END_NAMESPACE |
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| 57 | |
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| 58 | #endif // QGREGORIAN_CALENDAR_P_H |
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| 59 | |
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