qxcbconnection_basic.h

Enable keyboard shortcuts

// Copyright (C) 2018 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

// Qt-Security score:significant reason:default

#pragma once

#include "qxcbatom.h"

#include "qxcbexport.h"

#include <QtCore/QObject>

#include <QtCore/QByteArray>

#include <QtCore/QLoggingCategory>

#include <QtGui/private/qtguiglobal_p.h>

#include <xcb/xcb.h>

#include <memory>

QT_BEGIN_NAMESPACE

Q_DECLARE_LOGGING_CATEGORY(lcQpaXcb)

class Q_XCB_EXPORT QXcbBasicConnection : public QObject

    Q_OBJECT

public:

    QXcbBasicConnection(const char *displayName);

    ~QXcbBasicConnection();

#if QT_CONFIG(xcb_xlib)

    void *xlib_display() const { return m_xlibDisplay; }

#endif

    const char *displayName() const { return m_displayName.constData(); }

    int primaryScreenNumber() const { return m_primaryScreenNumber; }

    xcb_connection_t *xcb_connection() const { return m_xcbConnection; }

    bool isConnected() const {

        return m_xcbConnection && !xcb_connection_has_error(m_xcbConnection);

    const xcb_setup_t *setup() const { return m_setup; }

    size_t maxRequestDataBytes(size_t requestSize) const;

    inline xcb_atom_t atom(QXcbAtom::Atom qatom) const { return m_xcbAtom.atom(qatom); }

    QXcbAtom::Atom qatom(xcb_atom_t atom) const { return m_xcbAtom.qatom(atom); }

    xcb_atom_t internAtom(const char *name);

    QByteArray atomName(xcb_atom_t atom);

    bool hasXFixes() const { return m_hasXFixes; }

    bool hasXShape() const { return m_hasXhape; }

    bool hasXRandr() const { return m_hasXRandr; }

    bool hasInputShape() const { return m_hasInputShape; }

    bool hasXKB() const { return m_hasXkb; }

    bool hasXRender(int major = -1, int minor = -1) const {

        if (m_hasXRender && major != -1 && minor != -1)

            return m_xrenderVersion >= std::pair(major, minor);

        return m_hasXRender;

    bool hasXInput2() const { return m_xi2Enabled; }

    bool hasShm() const { return m_hasShm; }

    bool hasShmFd() const { return m_hasShmFd; }

    bool hasXSync() const { return m_hasXSync; }

    bool hasBigRequest() const;

    bool isAtLeastXRandR12() const { return m_hasXRandr && m_xrandr1Minor >= 2; }

    bool isAtLeastXRandR15() const { return m_hasXRandr && m_xrandr1Minor >= 5; }

    bool isAtLeastXI21() const { return m_xi2Enabled && m_xi2Minor >= 1; }

    bool isAtLeastXI22() const { return m_xi2Enabled && m_xi2Minor >= 2; }

    bool isAtLeastXI24() const { return m_xi2Enabled && m_xi2Minor >= 4; }

    bool isXIEvent(xcb_generic_event_t *event) const;

    bool isXIType(xcb_generic_event_t *event, uint16_t type) const;

    bool isXFixesType(uint responseType, int eventType) const;

    bool isXRandrType(uint responseType, int eventType) const;

    bool isXkbType(uint responseType) const; // https://bugs.freedesktop.org/show_bug.cgi?id=51295

protected:

    void initializeShm();

    void initializeXFixes();

    void initializeXRender();

    void initializeXRandr();

    void initializeXShape();

    void initializeXKB();

    void initializeXSync();

    void initializeXInput2();

private:

#if QT_CONFIG(xcb_xlib)

    void *m_xlibDisplay = nullptr;

#endif

    QByteArray m_displayName;

    xcb_connection_t *m_xcbConnection = nullptr;

    int m_primaryScreenNumber = 0;

    const xcb_setup_t *m_setup = nullptr;

    QXcbAtom m_xcbAtom;

    bool m_hasXFixes = false;

    bool m_hasXhape = false;

    bool m_hasInputShape;

    bool m_hasXRandr = false;

    bool m_hasXkb = false;

    bool m_hasXRender = false;

    bool m_hasShm = false;

    bool m_hasShmFd = false;

    bool m_hasXSync = false;

    std::pair<int, int> m_xrenderVersion;

    bool m_xi2Enabled = false;

    int m_xi2Minor = -1;

    int m_xiOpCode = -1;

    uint32_t m_xinputFirstEvent = 0;

    int m_xrandr1Minor = -1;

    uint32_t m_xfixesFirstEvent = 0;

    uint32_t m_xrandrFirstEvent = 0;

    uint32_t m_xkbFirstEvent = 0;

    uint32_t m_maximumRequestLength = 0;

};

#define Q_XCB_REPLY_CONNECTION_ARG(connection, ...) connection

#define Q_XCB_REPLY(call, ...) \

    std::unique_ptr<call##_reply_t, QScopedPointerPodDeleter>( \

        call##_reply(Q_XCB_REPLY_CONNECTION_ARG(__VA_ARGS__), call(__VA_ARGS__), nullptr) \

#define Q_XCB_REPLY_UNCHECKED(call, ...) \

    std::unique_ptr<call##_reply_t, QScopedPointerPodDeleter>( \

        call##_reply(Q_XCB_REPLY_CONNECTION_ARG(__VA_ARGS__), call##_unchecked(__VA_ARGS__), nullptr) \

QT_END_NAMESPACE