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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSystems module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qscreensaver_linux_p.h"

#if !defined(QT_NO_X11)
#include <X11/Xlib.h>
#endif // QT_NO_X11

QT_BEGIN_NAMESPACE

QScreenSaverPrivate::QScreenSaverPrivate(QScreenSaver *parent)
    : q_ptr(parent)
{
}

bool QScreenSaverPrivate::screenSaverEnabled()
{
#if !defined(QT_NO_X11)
    int timeout = 0;
    int interval = 0;
    int preferBlanking = 0;
    int allowExposures = 0;
    Display *display = XOpenDisplay(0);
    XGetScreenSaver(display, &timeout, &interval, &preferBlanking, &allowExposures);
    XCloseDisplay(display);
    return (timeout > 0);
#else
    return false;
#endif
}

void QScreenSaverPrivate::setScreenSaverEnabled(bool enabled)
{
#if !defined(QT_NO_X11)
    int timeout = 0;
    int interval = 0;
    int preferBlanking = 0;
    int allowExposures = 0;
    Display *display = XOpenDisplay(0);
    XGetScreenSaver(display, &timeout, &interval, &preferBlanking, &allowExposures);

    if (enabled && timeout > 0)
        XSetScreenSaver(display, -1, interval, preferBlanking, allowExposures);
    else if (!enabled && timeout != 0)
        XSetScreenSaver(display, 0, interval, preferBlanking, allowExposures);

    XCloseDisplay(display);
#else
    Q_UNUSED(enabled)
#endif
}

QT_END_NAMESPACE