1/****************************************************************************
2**
3** Copyright (C) 2019 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the plugins of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
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 Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39#ifndef QCOMPOSEPLATFORMINPUTCONTEXT_H
40#define QCOMPOSEPLATFORMINPUTCONTEXT_H
41
42#include <QtCore/QLoggingCategory>
43
44#include <qpa/qplatforminputcontext.h>
45
46#include <xkbcommon/xkbcommon-compose.h>
47
48QT_BEGIN_NAMESPACE
49
50Q_DECLARE_LOGGING_CATEGORY(lcXkbCompose)
51
52class QEvent;
53
54class QComposeInputContext : public QPlatformInputContext
55{
56 Q_OBJECT
57public:
58 QComposeInputContext();
59 ~QComposeInputContext();
60
61 bool isValid() const override;
62 void setFocusObject(QObject *object) override;
63 void reset() override;
64 void update(Qt::InputMethodQueries) override;
65
66 bool filterEvent(const QEvent *event) override;
67
68 // This invokable is called from QXkbCommon::setXkbContext().
69 Q_INVOKABLE void setXkbContext(struct xkb_context *context) { m_XkbContext = context; }
70
71protected:
72 void ensureInitialized();
73
74private:
75 bool m_initialized = false;
76 xkb_context *m_context = nullptr;
77 xkb_compose_table *m_composeTable = nullptr;
78 xkb_compose_state *m_composeState = nullptr;
79 QObject *m_focusObject = nullptr;
80 struct xkb_context *m_XkbContext = nullptr;
81};
82
83QT_END_NAMESPACE
84
85#endif // QCOMPOSEPLATFORMINPUTCONTEXT_H
86

source code of qtbase/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.h