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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtVersitOrganizer module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtimezones_p.h"
#include <QtOrganizer/qorganizer.h>
QTORGANIZER_USE_NAMESPACE
QT_BEGIN_NAMESPACE_VERSITORGANIZER
QOrganizerManager* TimeZone::getManager()
{
// We use the memory engine to do time zone recurrence calculations
static QOrganizerManager* manager(new QOrganizerManager(QString::fromLatin1("memory")));
return manager;
}
QDateTime TimeZone::convert(const QDateTime& dateTime) const
{
Q_ASSERT(isValid());
QOrganizerManager* manager = getManager();
int offset = 100000; // impossible value
QDateTime latestPhase;
foreach(const TimeZonePhase& phase, mPhases) {
QOrganizerEvent event;
event.setStartDateTime(phase.startDateTime());
event.setRecurrenceRules(QSet<QOrganizerRecurrenceRule>() << phase.recurrenceRule());
event.setRecurrenceDates(phase.recurrenceDates());
QList<QOrganizerItem> occurrences =
manager->itemOccurrences(event, phase.startDateTime(), dateTime, 500);
if (!occurrences.isEmpty()) {
QDateTime phaseStart(static_cast<const QOrganizerEventOccurrence &>(occurrences.last()).startDateTime());
if (phaseStart > latestPhase) {
latestPhase = phaseStart;
offset = phase.utcOffset();
}
}
else {
offset = phase.utcOffset();
}
}
QDateTime retn(dateTime);
retn.setTimeSpec(Qt::UTC);
if (offset >= -86400 && offset <= 86400) // offset must be within -24hours to +24hours
return retn.addSecs(-offset);
else
return retn;
}
QDateTime TimeZones::convert(const QDateTime& dateTime, const QString& tzid) const
{
if (!mTimeZones.contains(tzid))
return QDateTime();
TimeZone tz = mTimeZones.value(tzid);
if (!tz.isValid())
return QDateTime();
return tz.convert(dateTime);
}
QT_END_NAMESPACE_VERSITORGANIZER
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