lxqtbacklight.h

/* BEGIN_COMMON_COPYRIGHT_HEADER
 * (c)LGPL2+
 *
 * LXQt - a lightweight, Qt based, desktop toolset
 * https://lxqt.org
 *
 * Copyright: 2016 - LXQt team
 * Authors:
 *   P.L. Lucas <selairi@gmail.com>
 *
 * 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 */

#ifndef __Backlight_H__
#define __Backlight_H__

#include <QObject>
#include "lxqtglobals.h"

namespace LXQt
{
class VirtualBackEnd;

class LXQT_API Backlight : public QObject
{
Q_OBJECT

public:    
    Backlight(QObject *parent = nullptr);
    ~Backlight() override;
    
    bool isBacklightAvailable();
    bool isBacklightOff();
    /**Sets backlight level.
     * @param value backlight level. Negative values turn off backlight.
     */
    void setBacklight(int value);
    int getBacklight();
    int getMaxBacklight();
    
Q_SIGNALS:
    void backlightChanged(int value);

private Q_SLOTS:
    void backlightChangedSlot(int value);

private:
    VirtualBackEnd *m_backend;
};

} // namespace LXQt

#endif  // __Backlight_H__