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/***************************************************************************
Utils.cpp - some commonly used utility functions
-------------------
begin : Sun Mar 27 2011
copyright : (C) 2011 by Thomas Eschenbacher
email : Thomas.Eschenbacher@gmx.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "config.h"
#include <math.h>
#include <pthread.h>
#include <string.h>
#include <QDate>
#include <QDateTime>
#include <QDir>
#include <QLatin1Char>
#include <QLocale>
#include <QString>
#include <QThread>
#include <QtGlobal>
#include <KLocalizedString>
#include "libkwave/String.h"
#include "libkwave/Utils.h"
//***************************************************************************
void Kwave::yield()
{
pthread_testcancel();
QThread::yieldCurrentThread();
}
//***************************************************************************
QString Kwave::zoom2string(double percent)
{
QString result;
if (percent < 1000.0) {
int digits;
if (percent < 1.0)
digits = Kwave::toInt(ceil(1.0 - log10(percent)));
else if (percent < 10.0)
digits = 1;
else
digits = 0;
result.setNum(percent, 'f', digits);
result += _(" %");
} else {
result.setNum(Kwave::toInt(rint(percent / 100.0)));
result.prepend(_("x "));
}
return result;
}
//***************************************************************************
QString Kwave::ms2string(double ms, int precision)
{
QString result;
if (ms < 1.0) {
// limit precision, use 0.0 for exact zero
int digits = (ms != 0.0) ? Kwave::toInt(ceil(1.0 - log10(ms))) : 1;
if ( (digits < 0) || (digits > precision)) digits = precision;
result = _("%1 ms").arg(ms, 0, 'f', digits);
} else if (ms < 1000.0) {
result = _("%1 ms").arg(ms, 0, 'f', 1);
} else {
int s = Kwave::toInt(round(ms / 1000.0));
int m = Kwave::toInt(floor(s / 60.0));
if (m < 1) {
int digits = Kwave::toInt(
ceil(static_cast<double>(precision + 1) - log10(ms)));
result = _("%1 s").arg(
static_cast<double>(ms) / 1000.0, 0, 'f', digits);
} else {
result = _("%1:%2 min").arg(
m, 2, 10, QLatin1Char('0')).arg(
s % 60, 2, 10, QLatin1Char('0'));
}
}
return result;
}
//***************************************************************************
QString Kwave::samples2string(sample_index_t samples)
{
return QLocale().toString(Kwave::toUint(samples));
}
//***************************************************************************
QString Kwave::ms2hms(double ms)
{
unsigned int t, h, m, s, tms;
t = static_cast<unsigned int>(rint(ms * 10.0));
tms = t % 10000;
t /= 10000;
s = t % 60;
t /= 60;
m = t % 60;
t /= 60;
h = t;
return i18nc(
"time of label tooltip, %1=hour, %2=minute, %3=second, %4=milliseconds",
"%1:%2:%3.%4",
QString::asprintf("%02u", h),
QString::asprintf("%02u", m),
QString::asprintf("%02u", s),
QString::asprintf("%04u", tms)
);
}
//***************************************************************************
QString Kwave::string2date(const QString &str)
{
const Qt::DateFormat formats[] = {
Qt::ISODate,
Qt::TextDate,
};
const unsigned int fmt_count =
sizeof(formats) / sizeof(formats[0]);
QDateTime dt;
// try ID3 full date/time
dt = QDateTime::fromString(str, _("yyyy-MM-ddThh:mm:ss"));
if (dt.isValid())
return str; // already in complete date/time format
// type ID3 date without time
dt = QDateTime::fromString(str, _("yyyy-MM-dd"));
if (dt.isValid())
return str; // already a valid date
// try all date/time formats supported by Qt
dt = QLocale().toDateTime(str, QLocale::ShortFormat);
if (dt.isValid()) {
return dt.toString(_("yyyy-MM-ddThh:mm:ss"));
}
dt = QLocale().toDateTime(str, QLocale::LongFormat);
if (dt.isValid()) {
return dt.toString(_("yyyy-MM-ddThh:mm:ss"));
}
dt = QLocale::system().toDateTime(str, QLocale::ShortFormat);
if (dt.isValid()) {
return dt.toString(_("yyyy-MM-ddThh:mm:ss"));
}
dt = QLocale::system().toDateTime(str, QLocale::LongFormat);
if (dt.isValid()) {
return dt.toString(_("yyyy-MM-ddThh:mm:ss"));
}
for (unsigned int i = 0; i < fmt_count; i++) {
Qt::DateFormat fmt = formats[i];
QString s;
dt = QDateTime::fromString(str, fmt);
if (dt.isValid()) {
// full timestamp, including time
s = dt.toString(_("yyyy-MM-ddThh:mm:ss"));
}
if (!s.length()) {
// date only, without time
dt = QDateTime(QDate::fromString(str), QTime(0,0));
s = dt.toString(_("yyyy-MM-dd"));
}
if (s.length()) {
return s;
}
}
return QString();
}
//***************************************************************************
QUrl Kwave::URLfromUserInput(const QString &path)
{
return QUrl::fromUserInput(path, QDir::currentPath(),
QUrl::AssumeLocalFile);
}
//***************************************************************************
QString Kwave::urlScheme()
{
return _("kwave");
}
//***************************************************************************
quint64 Kwave::undoLimit()
{
return 2048;
}
//***************************************************************************
//***************************************************************************
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