Added bsdmouse and bsdkeyboard input plugins for FreeBSD

bsdmouse implements basic and extended level of psm(4) protocol. On
extended level only x and y coordinates are used. Plugin specification
is device filename, default value is /dev/sysmouse.

bsdkeyboard implements keyboard input for raw terminal mode. Plugin
specification is device name, normally /dev/ttyv[0-9], if not provided
STDIN file descriptor is used.

[ChangeLog][Platform Specific Changes] Added bsdmouse and bsdkeyboard
input plugins for FreeBSD.

Change-Id: I3c7b6f5cc22b4f1e405d56efc8b7ef2daa1dac74
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

5 files changed, 308 insertions, 0 deletions

diff --git a/src/plugins/generic/bsdmouse/bsdmouse.json b/src/plugins/generic/bsdmouse/bsdmouse.json
new file mode 100644
index 0000000000..33974a62f2
--- /dev/null
+++ b/src/plugins/generic/bsdmouse/bsdmouse.json
@@ -0,0 +1,3 @@
+{
+    "Keys": [ "BsdMouse" ]
+}
diff --git a/src/plugins/generic/bsdmouse/bsdmouse.pro b/src/plugins/generic/bsdmouse/bsdmouse.pro
new file mode 100644
index 0000000000..11949b95d5
--- /dev/null
+++ b/src/plugins/generic/bsdmouse/bsdmouse.pro
@@ -0,0 +1,16 @@
+TARGET = qbsdmouseplugin
+
+PLUGIN_TYPE = generic
+PLUGIN_EXTENDS = -
+PLUGIN_CLASS_NAME = QBsdMousePlugin
+load(qt_plugin)
+
+QT += core-private gui-private
+
+HEADERS = qbsdmouse.h
+SOURCES = main.cpp \
+         qbsdmouse.cpp
+
+OTHER_FILES += \
+    qbsdmouse.json
+
diff --git a/src/plugins/generic/bsdmouse/main.cpp b/src/plugins/generic/bsdmouse/main.cpp
new file mode 100644
index 0000000000..4abc7609c1
--- /dev/null
+++ b/src/plugins/generic/bsdmouse/main.cpp
@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2015-2016 Oleksandr Tymoshenko <gonzo@bluezbox.com>
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui/qgenericplugin.h>
+#include "qbsdmouse.h"
+
+QT_BEGIN_NAMESPACE
+
+class QBsdMousePlugin : public QGenericPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QGenericPluginFactoryInterface" FILE "bsdmouse.json")
+
+public:
+    QObject *create(const QString &key, const QString &specification) override;
+};
+
+QObject *QBsdMousePlugin::create(const QString &key, const QString &specification)
+{
+    if (!key.compare(QLatin1String("BsdMouse"), Qt::CaseInsensitive))
+        return new QBsdMouseHandler(key, specification);
+
+    return nullptr;
+}
+
+QT_END_NAMESPACE
+
+#include "main.moc"
diff --git a/src/plugins/generic/bsdmouse/qbsdmouse.cpp b/src/plugins/generic/bsdmouse/qbsdmouse.cpp
new file mode 100644
index 0000000000..125d74470b
--- /dev/null
+++ b/src/plugins/generic/bsdmouse/qbsdmouse.cpp
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2015-2016 Oleksandr Tymoshenko <gonzo@bluezbox.com>
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qbsdmouse.h"
+
+#include <QSocketNotifier>
+#include <QStringList>
+#include <QPoint>
+#include <QGuiApplication>
+#include <qpa/qwindowsysteminterface.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);
+}
+
+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
diff --git a/src/plugins/generic/bsdmouse/qbsdmouse.h b/src/plugins/generic/bsdmouse/qbsdmouse.h
new file mode 100644
index 0000000000..9a4cb8dd82
--- /dev/null
+++ b/src/plugins/generic/bsdmouse/qbsdmouse.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2015-2016 Oleksandr Tymoshenko <gonzo@bluezbox.com>
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBSDMOUSE_H
+#define QBSDMOUSE_H
+
+#include <QString>
+#include <QScopedPointer>
+#include <QSocketNotifier>
+
+#include <qobject.h>
+
+QT_BEGIN_NAMESPACE
+
+class QSocketNotifier;
+
+class QBsdMouseHandler : public QObject
+{
+    Q_OBJECT
+public:
+    QBsdMouseHandler(const QString &key, const QString &specification);
+    ~QBsdMouseHandler() override;
+
+private:
+    void readMouseData();
+
+private:
+    QScopedPointer<QSocketNotifier> m_notifier;
+    int m_devFd = -1;
+    int m_packetSize = 0;
+    int m_x = 0;
+    int m_y = 0;
+    int m_xOffset = 0;
+    int m_yOffset = 0;
+    Qt::MouseButtons m_buttons = Qt::NoButton;
+};
+
+QT_END_NAMESPACE
+
+#endif // QBSDMOUSE_H