1 /****************************************************************************
2 **
3 ** Copyright (C) 2016 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 QIBUSPLATFORMINPUTCONTEXT_H
40 #define QIBUSPLATFORMINPUTCONTEXT_H
41 
42 #include <qpa/qplatforminputcontext.h>
43 
44 #include <QtCore/qpointer.h>
45 #include <QtCore/QLocale>
46 #include <QtDBus/qdbuspendingreply.h>
47 #if QT_CONFIG(filesystemwatcher)
48 #include <QFileSystemWatcher>
49 #endif
50 #include <QTimer>
51 #include <QWindow>
52 
53 QT_BEGIN_NAMESPACE
54 
55 class QIBusPlatformInputContextPrivate;
56 class QDBusVariant;
57 
58 class QIBusFilterEventWatcher: public QDBusPendingCallWatcher
59 {
60 public:
61     explicit QIBusFilterEventWatcher(const QDBusPendingCall &call,
62                                      QObject *parent = nullptr,
63                                      QWindow *window = nullptr,
64                                      const Qt::KeyboardModifiers modifiers = { },
65                                      const QVariantList arguments = QVariantList())
QDBusPendingCallWatcher(call,parent)66     : QDBusPendingCallWatcher(call, parent)
67     , m_window(window)
68     , m_modifiers(modifiers)
69     , m_arguments(arguments)
70     {}
~QIBusFilterEventWatcher()71     ~QIBusFilterEventWatcher()
72     {}
73 
window()74     inline QWindow *window() const { return m_window; }
modifiers()75     inline const Qt::KeyboardModifiers modifiers() const { return m_modifiers; }
arguments()76     inline const QVariantList arguments() const { return m_arguments; }
77 
78 private:
79     QPointer<QWindow> m_window;
80     const Qt::KeyboardModifiers m_modifiers;
81     const QVariantList m_arguments;
82 };
83 
84 class QIBusPlatformInputContext : public QPlatformInputContext
85 {
86     Q_OBJECT
87 public:
88     QIBusPlatformInputContext();
89     ~QIBusPlatformInputContext();
90 
91     bool isValid() const override;
92     void setFocusObject(QObject *object) override;
93 
94     void invokeAction(QInputMethod::Action a, int x) override;
95     void reset() override;
96     void commit() override;
97     void update(Qt::InputMethodQueries) override;
98     bool filterEvent(const QEvent *event) override;
99     QLocale locale() const override;
100     bool hasCapability(Capability capability) const override;
101 
102 public Q_SLOTS:
103     void commitText(const QDBusVariant &text);
104     void updatePreeditText(const QDBusVariant &text, uint cursor_pos, bool visible);
105     void forwardKeyEvent(uint keyval, uint keycode, uint state);
106     void cursorRectChanged();
107     void deleteSurroundingText(int offset, uint n_chars);
108     void surroundingTextRequired();
109     void hidePreeditText();
110     void showPreeditText();
111     void filterEventFinished(QDBusPendingCallWatcher *call);
112     void socketChanged(const QString &str);
113     void busRegistered(const QString &str);
114     void busUnregistered(const QString &str);
115     void connectToBus();
116     void globalEngineChanged(const QString &engine_name);
117 
118 private:
119     QIBusPlatformInputContextPrivate *d;
120     bool m_eventFilterUseSynchronousMode;
121 #if QT_CONFIG(filesystemwatcher)
122     QFileSystemWatcher m_socketWatcher;
123 #endif
124     QTimer m_timer;
125 
126     void connectToContextSignals();
127 };
128 
129 QT_END_NAMESPACE
130 
131 #endif
132