00001 /* This file is part of the KDE project 00002 Copyright (C) 2003 Dag Andersen <danders@get2net.dk> 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public License 00015 along with this library; see the file COPYING.LIB. If not, write to 00016 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 00017 * Boston, MA 02110-1301, USA. 00018 */ 00019 #ifndef KPTDATETIME_H 00020 #define KPTDATETIME_H 00021 00022 #include <qdatetime.h> 00023 #include "kptduration.h" 00024 00025 namespace KPlato 00026 { 00027 00028 class Duration; 00029 00033 class DateTime : public QDateTime { 00034 00035 public: 00036 DateTime(); 00037 DateTime(const QDateTime &dt); 00038 DateTime(const QDate &date); 00039 DateTime(const QDate &date, const QTime &time); 00040 00044 DateTime operator+(const Duration &duration) const; 00048 DateTime operator-(const Duration &duration) const ; 00052 Duration operator-(const DateTime &dt) const { return duration(dt); } 00053 Duration operator-(const DateTime &dt) { return duration(dt); } 00054 00055 DateTime &operator+=(const Duration &duration); 00056 DateTime &operator-=(const Duration &duration); 00057 00058 static DateTime fromString(const QString dts) { 00059 QDateTime dt; 00060 if (dts.isEmpty()) 00061 return DateTime(); 00062 dt = QDateTime::fromString(dts, Qt::ISODate); 00063 if (dt.isValid()) 00064 return DateTime(dt); 00065 return DateTime(QDateTime::fromString(dts)); 00066 } 00067 private: 00068 00069 Duration duration(const DateTime &dt) const; 00070 void add(const Duration &duration); 00071 void subtract(const Duration &duration); 00072 00073 }; 00074 00075 } //KPlato namespace 00076 00077 #endif