1/****************************************************************************
2**
3** Copyright (C) 2018 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 or (at your option) any later version
20** approved by the KDE Free Qt Foundation. The licenses are as published by
21** the Free Software Foundation and appearing in the file LICENSE.GPL3
22** included in the packaging of this file. Please review the following
23** information to ensure the GNU General Public License requirements will
24** be met: https://www.gnu.org/licenses/gpl-3.0.html.
25**
26** $QT_END_LICENSE$
27**
28****************************************************************************/
29
30#ifndef QWAYLANDUTILS_P_H
31#define QWAYLANDUTILS_P_H
32
33//
34// W A R N I N G
35// -------------
36//
37// This file is not part of the Qt API. It exists purely as an
38// implementation detail. This header file may change from version to
39// version without notice, or even be removed.
40//
41// We mean it.
42//
43
44#include <QtCore/qglobal.h>
45
46struct wl_resource;
47
48QT_BEGIN_NAMESPACE
49
50namespace QtWayland {
51
52template<typename return_type>
53return_type fromResource(struct ::wl_resource *resource) {
54 if (auto *r = std::remove_pointer<return_type>::type::Resource::fromResource(resource))
55 return static_cast<return_type>(r->object());
56 return nullptr;
57}
58
59} // namespace QtWayland
60
61QT_END_NAMESPACE
62
63#endif // QWAYLANDUTILS_P_H
64

source code of qtwayland/src/compositor/global/qwaylandutils_p.h