/****************************************************************************

** 

**

** Definition of date and time classes

**

** Created : 940124

**

** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.

**

** This file is part of the tools module of the Qt GUI Toolkit.

**

** This file may be distributed under the terms of the Q Public License

** as defined by Trolltech AS of Norway and appearing in the file

** LICENSE.QPL included in the packaging of this file.

**

** This file may be distributed and/or modified under the terms of the

** GNU General Public License version 2 as published by the Free Software

** Foundation and appearing in the file LICENSE.GPL included in the

** packaging of this file.

**

** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition

** licenses may use this file in accordance with the Qt Commercial License

** Agreement provided with the Software.

**

** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE

** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

**

** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for

**   information about Qt Commercial License Agreements.

** See http://www.trolltech.com/qpl/ for QPL licensing information.

** See http://www.trolltech.com/gpl/ for GPL licensing information.

**

** Contact info@trolltech.com if any conditions of this licensing are

** not clear to you.

**

**********************************************************************/

#ifndef QDATETIME_H

#define QDATETIME_H

#ifndef QT_H

#include "qstring.h"

#endif // QT_H

/*****************************************************************************

  QDate class

 *****************************************************************************/

class Q_EXPORT QDate

{

public:

    QDate()  { jd=0; }				// set null date

    QDate( int y, int m, int d );		// set date

    virtual ~QDate() {}

    bool   isNull()	 const { return jd == 0; }

    bool   isValid()	 const;			// valid date

    int	   year()	 const;			// 1752..

    int	   month()	 const;			// 1..12

    int	   day()	 const;			// 1..31

    int	   dayOfWeek()	 const;			// 1..7 (monday==1)

    int	   dayOfYear()	 const;			// 1..365

    int	   daysInMonth() const;			// 28..31

    int	   daysInYear()	 const;			// 365 or 366

    virtual QString monthName( int month ) const;

    virtual QString dayName( int weekday ) const;

    QString toString()	 const;

    bool   setYMD( int y, int m, int d );

    QDate  addDays( int days )		const;

    int	   daysTo( const QDate & )	const;

    bool   operator==( const QDate &d ) const { return jd == d.jd; }

    bool   operator!=( const QDate &d ) const { return jd != d.jd; }

    bool   operator<( const QDate &d )	const { return jd < d.jd; }

    bool   operator<=( const QDate &d ) const { return jd <= d.jd; }

    bool   operator>( const QDate &d )	const { return jd > d.jd; }

    bool   operator>=( const QDate &d ) const { return jd >= d.jd; }

    static QDate currentDate();

    static bool	 isValid( int y, int m, int d );

    static bool	 leapYear( int year );

protected:

    static uint	 greg2jul( int y, int m, int d );

    static void	 jul2greg( uint jd, int &y, int &m, int &d );

private:

    static const char * const monthNames[];

    static const char * const weekdayNames[];

    uint	 jd;

    friend class QDateTime;

#ifndef QT_NO_DATASTREAM

    friend Q_EXPORT QDataStream &operator<<( QDataStream &, const QDate & );

    friend Q_EXPORT QDataStream &operator>>( QDataStream &, QDate & );

#endif

};

/*****************************************************************************

  QTime class

 *****************************************************************************/

class Q_EXPORT QTime

{

public:

    QTime() { ds=0; }				// set null time

    QTime( int h, int m, int s=0, int ms=0 );	// set time

    bool   isNull()	 const { return ds == 0; }

    bool   isValid()	 const;			// valid time

    int	   hour()	 const;			// 0..23

    int	   minute()	 const;			// 0..59

    int	   second()	 const;			// 0..59

    int	   msec()	 const;			// 0..999

    QString toString()	 const;

    bool   setHMS( int h, int m, int s, int ms=0 );

    QTime  addSecs( int secs )		const;

    int	   secsTo( const QTime & )	const;

    QTime  addMSecs( int ms )		const;

    int	   msecsTo( const QTime & )	const;

    bool   operator==( const QTime &d ) const { return ds == d.ds; }

    bool   operator!=( const QTime &d ) const { return ds != d.ds; }

    bool   operator<( const QTime &d )	const { return ds < d.ds; }

    bool   operator<=( const QTime &d ) const { return ds <= d.ds; }

    bool   operator>( const QTime &d )	const { return ds > d.ds; }

    bool   operator>=( const QTime &d ) const { return ds >= d.ds; }

    static QTime currentTime();

    static bool	 isValid( int h, int m, int s, int ms=0 );

    void   start();

    int	   restart();

    int	   elapsed();

private:

    static bool currentTime( QTime * );

    uint   ds;

    friend class QDateTime;

#ifndef QT_NO_DATASTREAM

    friend Q_EXPORT QDataStream &operator<<( QDataStream &, const QTime & );

    friend Q_EXPORT QDataStream &operator>>( QDataStream &, QTime & );

#endif

};

/*****************************************************************************

  QDateTime class

 *****************************************************************************/

class Q_EXPORT QDateTime

{

public:

    QDateTime() {}				// set null date and null time

    QDateTime( const QDate & );

    QDateTime( const QDate &, const QTime & );

    bool   isNull()	const		{ return d.isNull() && t.isNull(); }

    bool   isValid()	const		{ return d.isValid() && t.isValid(); }

    QDate  date()	const		{ return d; }

    QTime  time()	const		{ return t; }

    void   setDate( const QDate &date ) { d=date; }

    void   setTime( const QTime &time ) { t=time; }

    void   setTime_t( uint secsSince1Jan1970UTC );

    QString toString()	const;

    QDateTime addDays( int days )	const;

    QDateTime addSecs( int secs )	const;

    int	   daysTo( const QDateTime & )	const;

    int	   secsTo( const QDateTime & )	const;

    bool   operator==( const QDateTime &dt ) const;

    bool   operator!=( const QDateTime &dt ) const;

    bool   operator<( const QDateTime &dt )  const;

    bool   operator<=( const QDateTime &dt ) const;

    bool   operator>( const QDateTime &dt )  const;

    bool   operator>=( const QDateTime &dt ) const;

    static QDateTime currentDateTime();

private:

    QDate  d;

    QTime  t;

#ifndef QT_NO_DATASTREAM

    friend Q_EXPORT QDataStream &operator<<( QDataStream &, const QDateTime &);

    friend Q_EXPORT QDataStream &operator>>( QDataStream &, QDateTime & );

#endif

};

/*****************************************************************************

  Date and time stream functions

 *****************************************************************************/

#ifndef QT_NO_DATASTREAM

Q_EXPORT QDataStream &operator<<( QDataStream &, const QDate & );

Q_EXPORT QDataStream &operator>>( QDataStream &, QDate & );

Q_EXPORT QDataStream &operator<<( QDataStream &, const QTime & );

Q_EXPORT QDataStream &operator>>( QDataStream &, QTime & );

Q_EXPORT QDataStream &operator<<( QDataStream &, const QDateTime & );

Q_EXPORT QDataStream &operator>>( QDataStream &, QDateTime & );

#endif // QT_NO_DATASTREAM

#endif // QDATETIME_H