libkcal

duration.h

00001 /*
00002     This file is part of libkcal.
00003 
00004     Copyright (c) 2001-2003 Cornelius Schumacher <schumacher@kde.org>
00005 
00006     This library is free software; you can redistribute it and/or
00007     modify it under the terms of the GNU Library General Public
00008     License as published by the Free Software Foundation; either
00009     version 2 of the License, or (at your option) any later version.
00010 
00011     This library is distributed in the hope that it will be useful,
00012     but WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     Library General Public License for more details.
00015 
00016     You should have received a copy of the GNU Library General Public License
00017     along with this library; see the file COPYING.LIB.  If not, write to
00018     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019     Boston, MA 02110-1301, USA.
00020 */
00021 #ifndef KCAL_DURATION_H
00022 #define KCAL_DURATION_H
00023 
00024 #include <qdatetime.h>
00025 
00026 #include "libkcal_export.h"
00027 
00028 namespace KCal {
00029 
00033 class LIBKCAL_EXPORT Duration
00034 {
00035   public:
00039     enum Type {
00040       Seconds,   
00041       Days       
00042     };
00043 
00047     Duration();
00048 
00060     Duration( const QDateTime &start, const QDateTime &end );
00061 
00073     Duration( const QDateTime &start, const QDateTime &end, Type type );
00074 
00081     Duration( int duration, Type type = Seconds ); //krazy:exclude=explicit
00082 
00088     Duration( const Duration &duration );
00089 
00095     Duration &operator=( const Duration &duration );
00096 
00100     operator bool() const;
00101 
00105     bool operator!() const  { return !operator bool(); }
00106 
00111     bool operator<( const Duration &other ) const;
00112 
00117     bool operator<=( const Duration &other ) const
00118     { return !other.operator<( *this ); }
00119 
00120 
00125     bool operator>( const Duration &other ) const
00126     { return other.operator<( *this ); }
00127 
00132     bool operator>=( const Duration &other ) const
00133     { return !operator<( other ); }
00134 
00142     bool operator==( const Duration &other ) const;
00143 
00151     bool operator!=( const Duration &other ) const
00152     { return !operator==( other ); }
00153 
00160     Duration &operator+=( const Duration &other );
00161 
00170     Duration operator+( const Duration &other ) const
00171     { return Duration( *this ) += other; }
00172 
00176     Duration operator-() const;
00177 
00185     Duration &operator-=( const Duration &other );
00186 
00195     Duration operator-( const Duration &other ) const
00196     { return Duration( *this ) += other; }
00197 
00202     Duration &operator*=( int value );
00203 
00210     Duration operator*( int value ) const
00211     { return Duration( *this ) *= value; }
00212 
00217     Duration &operator/=( int value );
00218 
00225     Duration operator/( int value ) const
00226     { return Duration( *this ) /= value; }
00227 
00235     QDateTime end( const QDateTime &start ) const;
00236 
00240     Type type() const;
00241 
00246     bool isDaily() const;
00247 
00251     int asSeconds() const;
00252 
00258     int asDays() const;
00259 
00265     int value() const;
00266 
00267   private:
00268     int seconds() const { return mDaily ? mDuration * 86400 : mDuration; }
00269     int mDuration;
00270     bool mDaily;
00271 
00272     class Private;
00273     Private *d;
00274 };
00275 
00276 }
00277 
00278 #endif
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