qbsdmouse.cpp - mozsearch

Enable keyboard shortcuts

// Copyright (C) 2015-2016 Oleksandr Tymoshenko <gonzo@bluezbox.com>

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#include "qbsdmouse.h"

#include <QFile>

#include <QSocketNotifier>

#include <QStringList>

#include <QPoint>

#include <QGuiApplication>

#include <qpa/qwindowsysteminterface.h>

#include <private/qguiapplication_p.h>

#include <private/qinputdevicemanager_p_p.h>

#include <private/qcore_unix_p.h>

#include <qdebug.h>

#include <errno.h>

#include <fcntl.h>

#include <sys/mouse.h>

#include <unistd.h>

QT_BEGIN_NAMESPACE

enum {

    PsmLevelBasic = 0,

    PsmLevelExtended = 1,

    PsmLevelNative = 2

};

QBsdMouseHandler::QBsdMouseHandler(const QString &key, const QString &specification)

    Q_UNUSED(key);

    setObjectName(QLatin1String("BSD Sysmouse Handler"));

    QByteArray device;

    if (specification.startsWith("/dev/"))

        device = QFile::encodeName(specification);

    if (device.isEmpty())

        device = QByteArrayLiteral("/dev/sysmouse");

    m_devFd = QT_OPEN(device.constData(), O_RDONLY);

    if (m_devFd < 0) {

        qErrnoWarning(errno, "open(%s) failed", device.constData());

        return;

    int level = 0;

    if (ioctl(m_devFd, MOUSE_GETLEVEL, &level)) {

        qErrnoWarning(errno, "ioctl(%s, MOUSE_GETLEVEL) failed", device.constData());

        close(m_devFd);

        m_devFd = -1;

        return;

    switch (level) {

    case PsmLevelBasic:

        m_packetSize = 5;

        break;

    case PsmLevelExtended:

        m_packetSize = 8;

        break;

    default:

        qWarning("Unsupported mouse device operation level: %d", level);

        close(m_devFd);

        m_devFd = -1;

        return;

    if (fcntl(m_devFd, F_SETFL, O_NONBLOCK)) {

        qErrnoWarning(errno, "fcntl(%s, F_SETFL, O_NONBLOCK) failed", device.constData());

        close(m_devFd);

        m_devFd = -1;

        return;

    m_notifier.reset(new QSocketNotifier(m_devFd, QSocketNotifier::Read, this));

    connect(m_notifier.data(), &QSocketNotifier::activated, this, &QBsdMouseHandler::readMouseData);

    QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(

        QInputDeviceManager::DeviceTypePointer, 1);

QBsdMouseHandler::~QBsdMouseHandler()

    if (m_devFd != -1)

        close(m_devFd);

void QBsdMouseHandler::readMouseData()

    if (m_devFd < 0)

        return;

    if (m_packetSize == 0)

        return;

    // packet format described in mouse(4)

    qint8 packet[MOUSE_SYS_PACKETSIZE];

    quint8 status = 0;

    while (read(m_devFd, packet, m_packetSize) == m_packetSize) {

        const qint16 relx = packet[1] + packet[3];

        const qint16 rely = -(packet[2] + packet[4]);

        m_x += relx;

        m_y += rely;

        status = packet[0] & MOUSE_SYS_STDBUTTONS;

    // clamp to screen geometry

    const QRect g = QGuiApplication::primaryScreen()->virtualGeometry();

    if (m_x + m_xOffset < g.left())

        m_x = g.left() - m_xOffset;

    else if (m_x + m_xOffset > g.right())

        m_x = g.right() - m_xOffset;

    if (m_y + m_yOffset < g.top())

        m_y = g.top() - m_yOffset;

    else if (m_y + m_yOffset > g.bottom())

        m_y = g.bottom() - m_yOffset;

    const QPoint pos(m_x + m_xOffset, m_y + m_yOffset);

    m_buttons = Qt::NoButton;

    if (!(status & MOUSE_SYS_BUTTON1UP))

        m_buttons |= Qt::LeftButton;

    if (!(status & MOUSE_SYS_BUTTON2UP))

        m_buttons |= Qt::MiddleButton;

    if (!(status & MOUSE_SYS_BUTTON3UP))

        m_buttons |= Qt::RightButton;

    QWindowSystemInterface::handleMouseEvent(0, pos, pos, m_buttons);

QT_END_NAMESPACE