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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 190 insertions, 0 deletions

diff --git a/src/gui/embedded/qmouseqnx_qws.cpp b/src/gui/embedded/qmouseqnx_qws.cpp
new file mode 100644
index 0000000000..cea3673d70
--- /dev/null
+++ b/src/gui/embedded/qmouseqnx_qws.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.h"
+#include "qmouseqnx_qws.h"
+
+#include "qsocketnotifier.h"
+#include "qdebug.h"
+
+#include <sys/dcmd_input.h>
+
+#include <errno.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QQnxMouseHandler
+    \preliminary
+    \ingroup qws
+    \internal
+    \since 4.6
+
+    \brief The QQnxMouseHandler class implements a mouse driver
+    for the QNX \c{devi-hid} input manager.
+
+    To be able to compile this mouse handler, \l{Qt for Embedded Linux}
+    must be configured with the \c -qt-mouse-qnx option, see the
+    \l{Qt for Embedded Linux Pointer Handling}{Pointer Handling} documentation for details.
+
+    In order to use this mouse handler, the \c{devi-hid} input manager
+    must be set up and run with the resource manager interface (option \c{-r}).
+    Also, Photon must not be running.
+
+    Example invocation from command line: \c{/usr/photon/bin/devi-hid -Pr kbd mouse}
+    Note that after running \c{devi-hid}, you will not be able to use the local
+    shell anymore. It is suggested to run the command in a shell scrip, that launches
+    a Qt application after invocation of \c{devi-hid}.
+
+    To make \l{Qt for Embedded Linux} explicitly choose the qnx mouse
+    handler, set the QWS_MOUSE_PROTO environment variable to \c{qnx}. By default,
+    the first mouse device (\c{/dev/devi/mouse0}) is used. To override, pass a device
+    name as the first and only parameter, for example
+    \c{QWS_MOUSE_PROTO=qnx:/dev/devi/mouse1; export QWS_MOUSE_PROTO}.
+
+    \sa {Qt for Embedded Linux Pointer Handling}{Pointer Handling}, {Qt for Embedded Linux}
+*/
+
+/*!
+    Constructs a mouse handler for the specified \a device, defaulting to \c{/dev/devi/mouse0}.
+    The \a driver parameter must be \c{"qnx"}.
+
+    Note that you should never instanciate this class, instead let QMouseDriverFactory
+    handle the mouse handlers.
+
+    \sa QMouseDriverFactory
+ */
+QQnxMouseHandler::QQnxMouseHandler(const QString & /*driver*/, const QString &device)
+{
+    // open the mouse device with O_NONBLOCK so reading won't block when there's no data
+    mouseFD = QT_OPEN(device.isEmpty() ? "/dev/devi/mouse0" : device.toLatin1().constData(),
+                          QT_OPEN_RDONLY | O_NONBLOCK);
+    if (mouseFD == -1) {
+        qErrnoWarning(errno, "QQnxMouseHandler: Unable to open mouse device");
+        return;
+    }
+
+    // register a socket notifier on the file descriptor so we'll wake up whenever
+    // there's a mouse move waiting for us.
+    mouseNotifier = new QSocketNotifier(mouseFD, QSocketNotifier::Read, this);
+    connect(mouseNotifier, SIGNAL(activated(int)), SLOT(socketActivated()));
+
+    qDebug() << "QQnxMouseHandler: connected.";
+}
+
+/*!
+    Destroys this mouse handler and closes the connection to the mouse device.
+ */
+QQnxMouseHandler::~QQnxMouseHandler()
+{
+    QT_CLOSE(mouseFD);
+}
+
+/*! \reimp */
+void QQnxMouseHandler::resume()
+{
+    if (mouseNotifier)
+        mouseNotifier->setEnabled(true);
+}
+
+/*! \reimp */
+void QQnxMouseHandler::suspend()
+{
+    if (mouseNotifier)
+        mouseNotifier->setEnabled(false);
+}
+
+/*! \internal
+
+  This function is called whenever there is activity on the mouse device.
+  By default, it reads up to 10 mouse move packets and calls mouseChanged()
+  for each of them.
+*/
+void QQnxMouseHandler::socketActivated()
+{
+    // _mouse_packet is a QNX structure. devi-hid is nice enough to translate
+    // the raw byte data from mouse devices into generic format for us.
+    _mouse_packet packet;
+
+    int iteration = 0;
+
+    // read mouse events in batches of 10. Since we're getting quite a lot
+    // of mouse events, it's better to do them in batches than to return to the
+    // event loop every time.
+    do {
+        int bytesRead = QT_READ(mouseFD, &packet, sizeof(packet));
+        if (bytesRead == -1) {
+            // EAGAIN means that there are no more mouse events to read
+            if (errno != EAGAIN)
+                qErrnoWarning(errno, "QQnxMouseHandler: Unable to read from socket");
+            return;
+        }
+
+        // bytes read should always be equal to the size of a packet.
+        Q_ASSERT(bytesRead == sizeof(packet));
+
+        // translate the coordinates from the QNX data structure to Qt coordinates
+        // note the swapped y axis
+        QPoint pos = mousePos;
+        pos += QPoint(packet.dx, -packet.dy);
+
+        // QNX only tells us relative mouse movements, not absolute ones, so limit the
+        // cursor position manually to the screen
+        limitToScreen(pos);
+
+        // translate the QNX mouse button bitmask to Qt buttons
+        int buttons = Qt::NoButton;
+
+        if (packet.hdr.buttons & _POINTER_BUTTON_LEFT)
+            buttons |= Qt::LeftButton;
+        if (packet.hdr.buttons & _POINTER_BUTTON_MIDDLE)
+            buttons |= Qt::MidButton;
+        if (packet.hdr.buttons & _POINTER_BUTTON_RIGHT)
+            buttons |= Qt::RightButton;
+
+        // call mouseChanged() - this does all the magic to actually move the on-screen
+        // mouse cursor.
+        mouseChanged(pos, buttons, 0);
+    } while (++iteration < 11);
+}
+
+QT_END_NAMESPACE
+