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39
40#ifndef QGREGORIAN_CALENDAR_P_H
41#define QGREGORIAN_CALENDAR_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of calendar implementations. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include "qromancalendar_p.h"
55
56QT_BEGIN_NAMESPACE
57
58class Q_CORE_EXPORT QGregorianCalendar : public QRomanCalendar
59{
60 // TODO: provide static methods, called by the overrides, that can be called
61 // directly by QDate to optimize various parts.
62public:
63 QGregorianCalendar();
64 // CAlendar properties:
65 QString name() const override;
66 QCalendar::System calendarSystem() const override;
67 // Date queries:
68 bool isLeapYear(int year) const override;
69 // Julian Day conversions:
70 bool dateToJulianDay(int year, int month, int day, qint64 *jd) const override;
71 QCalendar::YearMonthDay julianDayToDate(qint64 jd) const override;
72
73 // Names of months (implemented in qlocale.cpp):
74 QString monthName(const QLocale &locale, int month, int year,
75 QLocale::FormatType format) const override;
76 QString standaloneMonthName(const QLocale &locale, int month, int year,
77 QLocale::FormatType format) const override;
78
79 // Static optimized versions for the benefit of QDate:
80 static int weekDayOfJulian(qint64 jd);
81 static bool leapTest(int year);
82 static int monthLength(int month, int year);
83 static bool validParts(int year, int month, int day);
84 static QCalendar::YearMonthDay partsFromJulian(qint64 jd);
85 static bool julianFromParts(int year, int month, int day, qint64 *jd);
86};
87
88QT_END_NAMESPACE
89
90#endif // QGREGORIAN_CALENDAR_P_H
91