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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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-3.0.html.
**
****************************************************************************/
#include "timelineformattime.h"
#include <QtQml>
namespace Timeline {
QString formatTime(qint64 timestamp, qint64 reference)
{
static const char *decimalUnits[] = {" ns", " \xb5s", " ms", " s"};
static const double second = 1e9;
static const double minute = 60;
static const double hour = 60;
int round = 1;
qint64 barrier = 1;
for (uint i = 0, end = sizeof(decimalUnits) / sizeof(char *); i < end; ++i) {
const double dividend = barrier;
if (reference < barrier) {
round += 3;
barrier *= 1000;
} else {
barrier *= 10;
if (reference < barrier) {
round += 2;
barrier *= 100;
} else {
barrier *= 10;
if (reference < barrier)
round += 1;
barrier *= 10;
}
}
if (timestamp < barrier) {
return QString::number(timestamp / dividend, 'g', qMax(round, 3))
+ QString::fromLatin1(decimalUnits[i]);
}
}
double seconds = timestamp / second;
if (seconds < minute) {
return QString::number(seconds, 'g', qMax(round, 3)) + " s";
} else {
int minutes = seconds / minute;
seconds -= minutes * minute;
if (minutes < hour) {
return QString::fromLatin1("%1m %2s").arg(QString::number(minutes),
QString::number(seconds, 'g', round));
} else {
int hours = minutes / hour;
minutes -= hours * hour;
if (reference < barrier * minute) {
return QString::fromLatin1("%1h %2m %3s").arg(QString::number(hours),
QString::number(minutes),
QString::number(seconds, 'g', round));
} else {
return QString::fromLatin1("%1h %2m").arg(QString::number(hours),
QString::number(minutes));
}
}
}
}
}
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