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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* https://lxqt.org
*
* Copyright: 2020 LXQt team
* Authors:
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include <QVBoxLayout>
#include <QFrame>
#include <QEvent>
#include <QDebug>
#include "sliderdialog.h"
SliderDialog::SliderDialog(QWidget *parent) : QDialog(parent, Qt::Dialog | Qt::WindowStaysOnTopHint | Qt::CustomizeWindowHint | Qt::Popup | Qt::X11BypassWindowManagerHint)
{
setWindowFlags(Qt::WindowStaysOnTopHint | Qt::CustomizeWindowHint | Qt::Popup | Qt::X11BypassWindowManagerHint);
m_backlight = new LXQt::Backlight(this);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setSpacing(0);
layout->setContentsMargins(2, 2, 2, 2);
m_upButton = new QToolButton();
m_upButton->setText(QStringLiteral("☀"));
m_upButton->setAutoRepeat(true);
layout->addWidget(m_upButton, 0, Qt::AlignHCenter);
m_slider = new QSlider(this);
layout->addWidget(m_slider, 0, Qt::AlignHCenter);
m_downButton = new QToolButton();
m_downButton->setText(QStringLiteral("☼"));
m_downButton->setAutoRepeat(true);
layout->addWidget(m_downButton, 0, Qt::AlignHCenter);
if(m_backlight->isBacklightAvailable() || m_backlight->isBacklightOff()) {
// Set the minimum to 5% of the maximum to prevent a black screen
int minBacklight = qMax(qRound((qreal)(m_backlight->getMaxBacklight())*0.05), 1);
int maxBacklight = m_backlight->getMaxBacklight();
int interval = maxBacklight - minBacklight;
if(interval <= 100) {
m_slider->setMaximum(maxBacklight);
m_slider->setMinimum(minBacklight);
m_slider->setValue(m_backlight->getBacklight());
} else {
m_slider->setMaximum(100);
// Set the minimum to 5% of the maximum to prevent a black screen
m_slider->setMinimum(5);
m_slider->setValue( (m_backlight->getBacklight() * 100) / maxBacklight);
}
} else {
m_slider->setValue(0);
m_slider->setEnabled(false);
m_upButton->setEnabled(false);
m_downButton->setEnabled(false);
}
connect(m_slider, &QSlider::valueChanged, this, &SliderDialog::sliderValueChanged);
connect(m_upButton, &QToolButton::clicked, this, &SliderDialog::upButtonClicked);
connect(m_downButton, &QToolButton::clicked, this, &SliderDialog::downButtonClicked);
}
void SliderDialog::sliderValueChanged(int value)
{
// Set the minimum to 5% of the maximum to prevent a black screen
int minBacklight = qMax(qRound((qreal)(m_backlight->getMaxBacklight())*0.05), 1);
int maxBacklight = m_backlight->getMaxBacklight();
int interval = maxBacklight - minBacklight;
if(interval > 100)
value = (value * maxBacklight) / 100;
m_backlight->setBacklight(value);
}
void SliderDialog::updateBacklight()
{
// Set the minimum to 5% of the maximum to prevent a black screen
int minBacklight = qMax(qRound((qreal)(m_backlight->getMaxBacklight())*0.05), 1);
int maxBacklight = m_backlight->getMaxBacklight();
int interval = maxBacklight - minBacklight;
if(interval <= 100)
m_slider->setValue(m_backlight->getBacklight());
else
m_slider->setValue( (m_backlight->getBacklight() * 100) / maxBacklight);
}
void SliderDialog::downButtonClicked(bool)
{
m_slider->setValue(m_slider->value() - 1);
}
void SliderDialog::upButtonClicked(bool)
{
m_slider->setValue(m_slider->value() + 1);
}
bool SliderDialog::event(QEvent * event)
{
if(event->type() == QEvent::WindowDeactivate || event->type() == QEvent::Hide) {
hide();
//printf("emit dialogClosed()\n");
emit dialogClosed();
}
return QDialog::event(event);
}
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