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/* This file is part of the KDE project
Copyright (C) 2001 Thomas Zander zander@kde.org
Copyright (C) 2004 - 2006 Dag Andersen <danders@get2net.dk>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KPTDURATION_H
#define KPTDURATION_H
#include <qglobal.h>
#include <qstring.h>
namespace KPlato
{
/**
* The duration class can be used to store a timespan in a convenient format.
* The timespan can be in length in many many hours down to miliseconds.
*/
class Duration {
public:
/**
* DayTime = d hh:mm:ss.sss
* Day = d.ddd
* Hour = hh:mm
* HourFraction = h.fraction of an hour
*/
enum Format { Format_DayTime, Format_Day, Format_Hour, Format_HourFraction, Format_i18nDayTime, Format_i18nDay, Format_i18nHour, Format_i18nHourFraction };
Duration();
Duration(const Duration &d);
Duration(unsigned d, unsigned h, unsigned m, unsigned s=0, unsigned ms=0);
Duration(Q_INT64 seconds);
~Duration();
/**
* Adds @param delta to *this. If @param delta > *this, *this is set to zeroDuration.
*/
void addMilliseconds(Q_INT64 delta) { add(delta); }
/**
* Adds @param delta to *this. If @param delta > *this, *this is set to zeroDuration.
*/
void addSeconds(Q_INT64 delta) { addMilliseconds(delta * 1000); }
/**
* Adds @param delta to *this. If @param delta > *this, *this is set to zeroDuration.
*/
void addMinutes(Q_INT64 delta) { addSeconds(delta * 60); }
/**
* Adds @param delta to *this. If @param delta > *this, *this is set to zeroDuration.
*/
void addHours(Q_INT64 delta) { addMinutes(delta * 60); }
/**
* Adds @param delta to *this. If @param delta > *this, *this is set to zeroDuration.
*/
void addDays(Q_INT64 delta) { addHours(delta * 24); }
//FIXME: overflow problem
Q_INT64 milliseconds() const { return m_ms; }
Q_INT64 seconds() const { return m_ms / 1000; }
Q_INT64 minutes() const { return seconds() / 60; }
unsigned hours() const { return minutes() / 60; }
unsigned days() const { return hours() / 24; }
void get(unsigned *days, unsigned *hours, unsigned *minutes, unsigned *seconds=0, unsigned *milliseconds=0) const;
bool operator==( const Duration &d ) const { return m_ms == d.m_ms; }
bool operator==( Q_INT64 d ) const { return m_ms == d; }
bool operator!=( const Duration &d ) const { return m_ms != d.m_ms; }
bool operator!=( Q_INT64 d ) const { return m_ms != d; }
bool operator<( const Duration &d ) const { return m_ms < d.m_ms; }
bool operator<( Q_INT64 d ) const { return m_ms < d; }
bool operator<=( const Duration &d ) const { return m_ms <= d.m_ms; }
bool operator<=( Q_INT64 d ) const { return m_ms <= d; }
bool operator>( const Duration &d ) const { return m_ms > d.m_ms; }
bool operator>( Q_INT64 d ) const { return m_ms > d; }
bool operator>=( const Duration &d ) const { return m_ms >= d.m_ms; }
bool operator>=( Q_INT64 d ) const { return m_ms >= d; }
Duration &operator=(const Duration &d ) { m_ms = d.m_ms; return *this;}
Duration operator*(int unit) const;
Duration operator*(const double value) const;
Duration operator/(int unit) const;
double operator/(const Duration &d) const;
Duration operator+(const Duration &d) const
{Duration dur(*this); dur.add(d); return dur; }
Duration &operator+=(const Duration &d) {add(d); return *this; }
Duration operator-(const Duration &d) const
{Duration dur(*this); dur.subtract(d); return dur; }
Duration &operator-=(const Duration &d) {subtract(d); return *this; }
QString toString(Format format = Format_DayTime) const;
static Duration fromString(const QString &s, Format format = Format_DayTime, bool *ok=0);
//NOTE: These must match fieldnumbers in duration widget!
enum Unit { Unit_d, Unit_h, Unit_m, Unit_s, Unit_ms };
double toDouble(Unit u=Unit_ms) const {
if (u == Unit_ms) return (double)m_ms;
else if (u == Unit_s) return (double)m_ms/1000.0;
else if (u == Unit_m) return (double)m_ms/(1000.0*60.0);
else if (u == Unit_h) return (double)m_ms/(1000.0*60.0*60.0);
else if (u == Unit_d) return (double)m_ms/(1000.0*60.0*60.0*24.0);
return (double)m_ms;
}
/**
* This is useful for occasions where we need a zero duration.
*/
static const Duration zeroDuration;
private:
/**
* Duration in milliseconds. Signed to allow for simple calculations which
* might go negative for intermediate results.
*/
Q_INT64 m_ms;
void add(Q_INT64 delta);
void add(const Duration &delta);
/**
* Subtracts @param delta from *this. If @param delta > *this, *this is set to zeroDuration.
*/
void subtract(const Duration &delta);
};
} //KPlato namespace
#endif
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