ResInsight/ApplicationCode/Application/Tools/RiaQDateTimeTools.h
2018-10-18 15:14:25 +02:00

129 lines
4.5 KiB
C++

/////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2017 Statoil ASA
//
// ResInsight is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ResInsight 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 General Public License at <http://www.gnu.org/licenses/gpl.html>
// for more details.
//
/////////////////////////////////////////////////////////////////////////////////
#pragma once
#include <qglobal.h>
#include <qnamespace.h>
#include <QString>
#include <string>
#include <vector>
class QDateTime;
class QDate;
class QTime;
class DateTimeSpan;
//==================================================================================================
//
//==================================================================================================
enum class DateTimePeriod
{
NONE = -1,
DAY,
WEEK,
MONTH,
QUARTER,
HALFYEAR,
YEAR,
DECADE
};
//==================================================================================================
//
//==================================================================================================
class RiaQDateTimeTools
{
static const DateTimeSpan TIMESPAN_DAY;
static const DateTimeSpan TIMESPAN_WEEK;
static const DateTimeSpan TIMESPAN_MONTH;
static const DateTimeSpan TIMESPAN_QUARTER;
static const DateTimeSpan TIMESPAN_HALFYEAR;
static const DateTimeSpan TIMESPAN_YEAR;
static const DateTimeSpan TIMESPAN_DECADE;
public:
static const QString TIMESPAN_DAY_NAME;
static const QString TIMESPAN_WEEK_NAME;
static const QString TIMESPAN_MONTH_NAME;
static const QString TIMESPAN_QUARTER_NAME;
static const QString TIMESPAN_HALFYEAR_NAME;
static const QString TIMESPAN_YEAR_NAME;
static const QString TIMESPAN_DECADE_NAME;
static Qt::TimeSpec currentTimeSpec();
static QDateTime fromString(const QString& dateString, const QString& format);
static QDateTime fromYears(double years);
static QDateTime fromTime_t(time_t t);
static QDateTime addMSecs(const QDateTime& dt, double msecs);
static QDateTime addDays(const QDateTime& dt, double days);
static QDateTime addYears(const QDateTime& dt, double years);
static QDateTime addSpan(const QDateTime& dt, DateTimeSpan span);
static QDateTime subtractSpan(const QDateTime& dt, DateTimeSpan span);
static QDateTime addPeriod(const QDateTime& dt, DateTimePeriod period);
static QDateTime subtractPeriod(const QDateTime& dt, DateTimePeriod period);
static QDateTime epoch();
static QDateTime createUtcDateTime();
static QDateTime createUtcDateTime(const QDate& date);
static QDateTime createUtcDateTime(const QDate& date, const QTime& time);
static QDateTime createUtcDateTime(const QDateTime& dt);
static bool lessThan(const QDateTime& dt1, const QDateTime& dt2);
static const DateTimeSpan timeSpan(DateTimePeriod period);
static QDateTime truncateTime(const QDateTime& dt, DateTimePeriod period);
static std::vector<DateTimePeriod> dateTimePeriods();
static QString dateTimePeriodName(DateTimePeriod period);
// This function uses C locale to make sure the text representation of a date is stable, independent of the locale
// settings on local machine. Required for stable regression testing.
static QString toStringUsingApplicationLocale(const QDateTime& dt, const QString& format);
private:
static quint64 secondsInDay();
static quint64 secondsInYear();
};
//==================================================================================================
///
//==================================================================================================
class DateTimeSpan
{
public:
DateTimeSpan() : m_years(0), m_months(0), m_days(0) { }
DateTimeSpan(int years, int months, int days) : m_years(years), m_months(months), m_days(days) { }
int years() const { return m_years; }
int months() const { return m_months; }
int days() const { return m_days; }
bool isEmpty() { return m_years == 0 && m_months == 0 && m_days; }
private:
int m_years;
int m_months;
int m_days;
};