qxcbkeyboard.h

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// Copyright (C) 2016 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 QXCBKEYBOARD_H
#define QXCBKEYBOARD_H
 
#include "qxcbobject.h"
 
#include <xcb/xcb_keysyms.h>
#define explicit dont_use_cxx_explicit
#include <xcb/xkb.h>
#undef explicit
 
#include <QtGui/private/qxkbcommon_p.h>
#include <xkbcommon/xkbcommon-x11.h>
 
#include <qpa/qplatformkeymapper.h>
 
#include <QEvent>
 
QT_BEGIN_NAMESPACE
 
class QXcbKeyboard : public QXcbObject, public QPlatformKeyMapper
{
public:
    QXcbKeyboard(QXcbConnection *connection);
 
    ~QXcbKeyboard();
 
    void initialize();
    void selectEvents();
 
    void handleKeyPressEvent(const xcb_key_press_event_t *event);
    void handleKeyReleaseEvent(const xcb_key_release_event_t *event);
 
    Qt::KeyboardModifiers translateModifiers(int s) const;
    void updateKeymap(xcb_mapping_notify_event_t *event);
    void updateKeymap();
 
    QList<QKeyCombination> possibleKeyCombinations(const QKeyEvent *event) const override;
    Qt::KeyboardModifiers queryKeyboardModifiers() const override;
 
    void updateXKBMods();
    xkb_mod_mask_t xkbModMask(quint16 state);
    void updateXKBStateFromCore(quint16 state);
    void updateXKBStateFromXI(void *modInfo, void *groupInfo);
 
    int coreDeviceId() const { return core_device_id; }
    void updateXKBState(xcb_xkb_state_notify_event_t *state);
 
    void handleStateChanges(xkb_state_component changedComponents);
 
protected:
    void handleKeyEvent(xcb_window_t sourceWindow, QEvent::Type type, xcb_keycode_t code,
                        quint16 state, xcb_timestamp_t time, bool fromSendEvent);
 
    void resolveMaskConflicts();
 
    typedef QMap<xcb_keysym_t, int> KeysymModifierMap;
    struct xkb_keymap *keymapFromCore(const KeysymModifierMap &keysymMods);
 
    void updateModifiers(const KeysymModifierMap &keysymMods);
    KeysymModifierMap keysymsToModifiers();
 
    void updateVModMapping();
    void updateVModToRModMapping();
 
private:
    bool m_config = false;
    bool m_isAutoRepeat = false;
    xcb_keycode_t m_autoRepeatCode = 0;
 
    struct _mod_masks {
        uint alt;
        uint altgr;
        uint meta;
        uint super;
        uint hyper;
    };
 
    _mod_masks rmod_masks;
 
    xcb_key_symbols_t *m_key_symbols = nullptr;
    struct _xkb_mods {
        xkb_mod_index_t shift;
        xkb_mod_index_t lock;
        xkb_mod_index_t control;
        xkb_mod_index_t mod1;
        xkb_mod_index_t mod2;
        xkb_mod_index_t mod3;
        xkb_mod_index_t mod4;
        xkb_mod_index_t mod5;
    };
    _xkb_mods xkb_mods;
 
    _mod_masks vmod_masks;
    int core_device_id;
 
    QXkbCommon::ScopedXKBState m_xkbState;
    QXkbCommon::ScopedXKBKeymap m_xkbKeymap;
    QXkbCommon::ScopedXKBContext m_xkbContext;
 
    bool m_superAsMeta = false;
    bool m_hyperAsMeta = false;
};
 
QT_END_NAMESPACE
 
#endif