qBittorrent/src/gui/speedlimitdlg.cpp

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/*
* Bittorrent Client using Qt4 and libtorrent.
* Copyright (C) 2006 Christophe Dumez
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* Contact : chris@qbittorrent.org
*/
#include "speedlimitdlg.h"
SpeedLimitDialog::SpeedLimitDialog(QWidget *parent): QDialog(parent)
{
setupUi(this);
qDebug("Bandwidth allocation dialog creation");
// Connect to slots
connect(bandwidthSlider, SIGNAL(valueChanged(int)), this, SLOT(updateSpinValue(int)));
connect(spinBandwidth, SIGNAL(valueChanged(int)), this, SLOT(updateSliderValue(int)));
move(Utils::Misc::screenCenter(this));
}
SpeedLimitDialog::~SpeedLimitDialog()
{
qDebug("Deleting bandwidth allocation dialog");
}
// -2: if cancel
long SpeedLimitDialog::askSpeedLimit(bool *ok, QString title, long default_value, long max_value)
{
SpeedLimitDialog dlg;
dlg.setWindowTitle(title);
dlg.setupDialog(max_value / 1024., default_value / 1024.);
if (dlg.exec() == QDialog::Accepted) {
*ok = true;
int val = dlg.getSpeedLimit();
if (val <= 0)
return -1;
return val * 1024;
}
else {
*ok = false;
return -2;
}
}
void SpeedLimitDialog::updateSpinValue(int val) const
{
qDebug("Called updateSpinValue with %d", val);
if (val <= 0) {
spinBandwidth->setValue(0);
spinBandwidth->setSpecialValueText(QString::fromUtf8(""));
spinBandwidth->setSuffix(QString::fromUtf8(""));
}
else {
spinBandwidth->setValue(val);
spinBandwidth->setSuffix(" " + tr("KiB/s"));
}
}
void SpeedLimitDialog::updateSliderValue(int val) const
{
if (val <= 0) {
spinBandwidth->setValue(0);
spinBandwidth->setSpecialValueText(QString::fromUtf8(""));
spinBandwidth->setSuffix(QString::fromUtf8(""));
}
if (val > bandwidthSlider->maximum())
bandwidthSlider->setMaximum(val);
bandwidthSlider->setValue(val);
}
long SpeedLimitDialog::getSpeedLimit() const
{
long val = bandwidthSlider->value();
if (val > 0)
return val;
return -1;
}
void SpeedLimitDialog::setupDialog(long max_slider, long val) const
{
if (val < 0)
val = 0;
if (max_slider < 0)
max_slider = 1000;
// This can happen for example if global rate limit is lower
// than torrent rate limit.
if (val > max_slider)
max_slider = val;
bandwidthSlider->setMaximum(max_slider);
bandwidthSlider->setValue(val);
updateSpinValue(val);
}