Magdalena Stojek f071d4ee8a QCalendar example illustrating the user-supplied plugin mechanism
This example demonstrates how to write a calendar backend plugin
using a low-level API for extending Qt applications.

Fixes: QTBUG-115200
Change-Id: If0b7f2552ba8c2203acdcbff238fb0ffa7cfca55
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2024-07-04 15:25:29 +02:00

30 lines
1.0 KiB
C++

// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef CALENDARBACKEND_H
#define CALENDARBACKEND_H
#include "private/qromancalendar_p.h"
#include "qdatetime.h"
#include <QtCore/private/qcalendarbackend_p.h>
//![0]
class JulianGregorianCalendar : public QRomanCalendar
{
public:
JulianGregorianCalendar(QDate endJulian, QAnyStringView name);
QString name() const override;
int daysInMonth(int month, int year = QCalendar::Unspecified) const override;
bool isLeapYear(int year) const override;
bool dateToJulianDay(int year, int month, int day, qint64 *jd) const override;
QCalendar::YearMonthDay julianDayToDate(qint64 jd) const override;
private:
static inline const QCalendar julian = QCalendar(QCalendar::System::Julian);
static inline const QCalendar gregorian = QCalendar(QCalendar::System::Gregorian);
QCalendar::YearMonthDay m_julianUntil;
QCalendar::YearMonthDay m_gregorianSince;
QString m_name;
};
//![0]
#endif // CALENDARBACKEND_H