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/*
TimeSpans.h
This file is part of Charm, a task-based time tracking application.
Copyright (C) 2007-2018 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Mirko Boehm <mirko.boehm@kdab.com>
Author: Frank Osterfeld <frank.osterfeld@kdab.com>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TIMESPANS_H
#define TIMESPANS_H
#include <QCoreApplication>
#include <QDate>
#include <QPair>
#include <QTimer>
#include <QObject>
#include <QDateTime>
typedef QPair<QDate, QDate> TimeSpan;
enum TimeSpanType {
Day = 0,
Week,
Month,
Range,
Year
};
struct NamedTimeSpan {
QString name;
TimeSpan timespan;
bool contains(const QDate &date) const;
TimeSpanType timeSpanType;
};
/** Provides commonly used time spans for a given date.
The spans are measured from a start time to *before* an end time.
today() looks like this: today, 0:00 - tomorrow, 0:00
To see of a date (or datetime) is within the span, test for
x >= start && x < end.
TimeSpan only deals with days, not with anything of finer
granularity.
*/
class TimeSpans
{
Q_DECLARE_TR_FUNCTIONS(TimeSpans)
public:
/**
* Creates a collection of timespans with @p referenceDate as reference date.
*
* @param referenceDate the reference date ("today") to calculate time spans for
*/
explicit TimeSpans(const QDate &referenceDate = QDate::currentDate());
QList<NamedTimeSpan> standardTimeSpans() const;
QList<NamedTimeSpan> last4Weeks() const;
QList<NamedTimeSpan> last4Months() const;
NamedTimeSpan today() const;
NamedTimeSpan yesterday() const;
NamedTimeSpan dayBeforeYesterday() const;
NamedTimeSpan thisWeek() const;
NamedTimeSpan lastWeek() const;
NamedTimeSpan theWeekBeforeLast() const;
NamedTimeSpan thisMonth() const;
NamedTimeSpan thisYear() const;
NamedTimeSpan lastMonth() const;
NamedTimeSpan theMonthBeforeLast() const;
private:
NamedTimeSpan m_today;
NamedTimeSpan m_yesterday;
NamedTimeSpan m_dayBeforeYesterday;
NamedTimeSpan m_thisWeek;
NamedTimeSpan m_lastWeek;
NamedTimeSpan m_theWeekBeforeLast;
NamedTimeSpan m_3WeeksAgo;
NamedTimeSpan m_thisMonth;
NamedTimeSpan m_thisYear;
NamedTimeSpan m_lastMonth;
NamedTimeSpan m_theMonthBeforeLast;
NamedTimeSpan m_3MonthsAgo;
};
class DateChangeWatcher : public QObject
{
Q_OBJECT
public:
explicit DateChangeWatcher(QObject *parent = nullptr);
Q_SIGNALS:
void dateChanged();
private Q_SLOTS:
void slotTimeout();
private:
QTimer m_timer;
QDate m_today;
};
#endif
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