qcomposeplatforminputcontext.h

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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QCOMPOSEPLATFORMINPUTCONTEXT_H
#define QCOMPOSEPLATFORMINPUTCONTEXT_H
 
#include <QtCore/QLoggingCategory>
 
#include <qpa/qplatforminputcontext.h>
 
#include <xkbcommon/xkbcommon-compose.h>
 
Q_DECLARE_OPAQUE_POINTER(xkb_context *)
QT_BEGIN_NAMESPACE
 
Q_DECLARE_LOGGING_CATEGORY(lcXkbCompose)
 
class QEvent;
 
class QComposeInputContext : public QPlatformInputContext
{
    Q_OBJECT
public:
    QComposeInputContext();
    ~QComposeInputContext();
 
    bool isValid() const override;
    void setFocusObject(QObject *object) override;
    void reset() override;
    void update(Qt::InputMethodQueries) override;
 
    bool filterEvent(const QEvent *event) override;
 
    // This invokable is called from QXkbCommon::setXkbContext().
    Q_INVOKABLE void setXkbContext(struct xkb_context *context) { m_XkbContext = context; }
 
protected:
    void ensureInitialized();
 
private:
    bool m_initialized = false;
    xkb_compose_table *m_composeTable = nullptr;
    xkb_compose_state *m_composeState = nullptr;
    QObject *m_focusObject = nullptr;
    struct xkb_context *m_XkbContext = nullptr;
};
 
QT_END_NAMESPACE
 
#endif // QCOMPOSEPLATFORMINPUTCONTEXT_H