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Diffstat (limited to 'src/corelib/time/qcalendarbackend_p.h')
| -rw-r--r-- | src/corelib/time/qcalendarbackend_p.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/corelib/time/qcalendarbackend_p.h b/src/corelib/time/qcalendarbackend_p.h new file mode 100644 index 0000000000..21506e9e2c --- /dev/null +++ b/src/corelib/time/qcalendarbackend_p.h @@ -0,0 +1,144 @@ +/**************************************************************************** +** +** Copyright (C) 2019 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QCALENDAR_BACKEND_P_H +#define QCALENDAR_BACKEND_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of calendar implementations. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qobjectdefs.h> +#include <QtCore/qcalendar.h> +#include <QtCore/qstringlist.h> +#include <QtCore/qstring.h> +#include <QtCore/qmap.h> + +QT_BEGIN_NAMESPACE + +// Locale-related parts, mostly handled in ../text/qlocale.cpp +struct QLocaleDataEntry { + quint16 index, size; +}; + +struct QCalendarLocale { + quint16 m_language_id, m_script_id, m_country_id; + // Month name indexes: + QLocaleDataEntry m_standalone_short; + QLocaleDataEntry m_standalone_long; + QLocaleDataEntry m_standalone_narrow; + QLocaleDataEntry m_short; + QLocaleDataEntry m_long; + QLocaleDataEntry m_narrow; +}; + +// Partial implementation, of methods with common forms, in qcalendar.cpp +class Q_CORE_EXPORT QCalendarBackend +{ + friend class QCalendar; +public: + virtual ~QCalendarBackend(); + virtual QString name() const = 0; + virtual QCalendar::System calendarSystem() const; + // Date queries: + virtual int daysInMonth(int month, int year = QCalendar::Unspecified) const = 0; + virtual int daysInYear(int year) const; + virtual int monthsInYear(int year) const; + virtual bool isDateValid(int year, int month, int day) const; + // Properties of the calendar: + virtual bool isLeapYear(int year) const = 0; + virtual bool isLunar() const = 0; + virtual bool isLuniSolar() const = 0; + virtual bool isSolar() const = 0; + virtual bool isProleptic() const; + virtual bool hasYearZero() const; + virtual int maximumDaysInMonth() const; + virtual int minimumDaysInMonth() const; + virtual int maximumMonthsInYear() const; + // Julian Day conversions: + virtual bool dateToJulianDay(int year, int month, int day, qint64 *jd) const = 0; + virtual QCalendar::YearMonthDay julianDayToDate(qint64 jd) const = 0; + // Day of week and week numbering: + virtual int dayOfWeek(qint64 jd) const; + + // Names of months and week-days (implemented in qlocale.cpp): + virtual QString monthName(const QLocale &locale, int month, int year, + QLocale::FormatType format) const; + virtual QString standaloneMonthName(const QLocale &locale, int month, int year, + QLocale::FormatType format) const; + virtual QString weekDayName(const QLocale &locale, int day, + QLocale::FormatType format) const; + virtual QString standaloneWeekDayName(const QLocale &locale, int day, + QLocale::FormatType format) const; + + // Formatting of date-times (implemented in qlocale.cpp): + virtual QString dateTimeToString(QStringView format, const QDateTime &datetime, + const QDate &dateOnly, const QTime &timeOnly, + const QLocale &locale) const; + + // Calendar enumeration by name: + static QStringList availableCalendars(); + +protected: + QCalendarBackend(const QString &name, QCalendar::System id = QCalendar::System::User); + + // Locale support: + virtual const QCalendarLocale *localeMonthIndexData() const = 0; + virtual const ushort *localeMonthData() const = 0; + + bool registerAlias(const QString &name); + +private: + // QCalendar's access to its registry: + static const QCalendarBackend *fromName(QStringView name); + static const QCalendarBackend *fromName(QLatin1String name); + // QCalendar's access to singletons: + static const QCalendarBackend *fromEnum(QCalendar::System system); +}; + +QT_END_NAMESPACE + +#endif // QCALENDAR_BACKEND_P_H |