File indexing completed on 2024-04-14 14:32:50

0001 /***************************************************************************
0002  *   Copyright (C) 2012-2016 by Daniel Nicoletti <dantti12@gmail.com>      *
0003  *   Copyright (C) 2015 Lukáš Tinkl <ltinkl@redhat.com>                    *
0004  *                                                                         *
0005  *   This program is free software; you can redistribute it and/or modify  *
0006  *   it under the terms of the GNU General Public License as published by  *
0007  *   the Free Software Foundation; either version 2 of the License, or     *
0008  *   (at your option) any later version.                                   *
0009  *                                                                         *
0010  *   This program is distributed in the hope that it will be useful,       *
0011  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
0012  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
0013  *   GNU General Public License for more details.                          *
0014  *                                                                         *
0015  *   You should have received a copy of the GNU General Public License     *
0016  *   along with this program; see the file COPYING. If not, write to       *
0017  *   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,  *
0018  *   Boston, MA 02110-1301, USA.                                           *
0019  ***************************************************************************/
0020 
0021 #include "XEventHandler.h"
0022 
0023 #include <QCoreApplication>
0024 
0025 #include <xcb/randr.h>
0026 
0027 XEventHandler::XEventHandler(int randrBase)
0028     : m_randrBase(randrBase)
0029 {
0030     qApp->installNativeEventFilter(this);
0031 }
0032 
0033 bool XEventHandler::nativeEventFilter(const QByteArray &eventType, void *message, qintptr *result)
0034 {
0035     Q_UNUSED(result);
0036     if (eventType != "xcb_generic_event_t") {
0037         // only interested in XCB  events
0038         return false;
0039     }
0040     auto e = static_cast<xcb_generic_event_t *>(message);
0041     auto xEventType = e->response_type & ~0x80;
0042 
0043     if (xEventType == m_randrBase + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
0044         emit outputChanged();
0045     }
0046 
0047     return false;
0048 }
0049 
0050 #include "moc_XEventHandler.cpp"