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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qxcbwmsupport.h"
#include "qxcbscreen.h"
#include <qdebug.h>
QT_BEGIN_NAMESPACE
QXcbWMSupport::QXcbWMSupport(QXcbConnection *c)
: QXcbObject(c)
{
updateNetWMAtoms();
updateVirtualRoots();
}
bool QXcbWMSupport::isSupportedByWM(xcb_atom_t atom) const
{
return net_wm_atoms.contains(atom);
}
void QXcbWMSupport::updateNetWMAtoms()
{
net_wm_atoms.clear();
xcb_window_t root = connection()->screens().at(connection()->primaryScreen())->root();
int offset = 0;
int remaining = 0;
do {
xcb_generic_error_t *error = 0;
xcb_get_property_cookie_t cookie = xcb_get_property(xcb_connection(), false, root, atom(QXcbAtom::_NET_SUPPORTED), XCB_ATOM_ATOM, offset, 1024);
xcb_get_property_reply_t *reply = xcb_get_property_reply(xcb_connection(), cookie, &error);
if (!reply || error)
break;
remaining = 0;
if (reply->type == XCB_ATOM_ATOM && reply->format == 32) {
int len = xcb_get_property_value_length(reply)/4;
xcb_atom_t *atoms = (xcb_atom_t *)xcb_get_property_value(reply);
int s = net_wm_atoms.size();
net_wm_atoms.resize(s + len);
memcpy(net_wm_atoms.data() + s, atoms, len*sizeof(xcb_atom_t));
remaining = reply->bytes_after;
offset += len;
}
free(reply);
} while (remaining > 0);
}
// update the virtual roots array
void QXcbWMSupport::updateVirtualRoots()
{
net_virtual_roots.clear();
if (!isSupportedByWM(atom(QXcbAtom::_NET_VIRTUAL_ROOTS)))
return;
xcb_window_t root = connection()->screens().at(connection()->primaryScreen())->root();
int offset = 0;
int remaining = 0;
do {
xcb_generic_error_t *error = 0;
xcb_get_property_cookie_t cookie = xcb_get_property(xcb_connection(), false, root, atom(QXcbAtom::_NET_VIRTUAL_ROOTS), XCB_ATOM_ATOM, offset, 1024);
xcb_get_property_reply_t *reply = xcb_get_property_reply(xcb_connection(), cookie, &error);
if (!reply || error)
break;
remaining = 0;
if (reply->type == XCB_ATOM_ATOM && reply->format == 32) {
int len = xcb_get_property_value_length(reply)/4;
xcb_atom_t *atoms = (xcb_atom_t *)xcb_get_property_value(reply);
int s = net_wm_atoms.size();
net_wm_atoms.resize(s + len);
memcpy(net_wm_atoms.data() + s, atoms, len*sizeof(xcb_atom_t));
remaining = reply->bytes_after;
offset += len;
}
free(reply);
} while (remaining > 0);
#ifdef Q_XCB_DEBUG
qDebug() << "======== updateVirtualRoots";
for (int i = 0; i < net_virtual_roots.size(); ++i)
qDebug() << connection()->atomName(net_virtual_roots.at(i));
qDebug() << "======== updateVirtualRoots";
#endif
}
QT_END_NAMESPACE
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