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diff --git a/src/gui/embedded/qmousebus_qws.cpp b/src/gui/embedded/qmousebus_qws.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmousebus_qws.h"
+
+#ifndef QT_NO_QWS_MOUSE_BUS
+
+#include "qwindowsystem_qws.h"
+#include "qsocketnotifier.h"
+
+#include "qapplication.h"
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <termios.h>
+
+QT_BEGIN_NAMESPACE
+
+/*
+ * bus mouse driver (a.k.a. Logitech busmouse)
+ */
+
+class QWSBusMouseHandlerPrivate : public QObject
+{
+ Q_OBJECT
+public:
+ QWSBusMouseHandlerPrivate(QWSBusMouseHandler *h, const QString &driver, const QString &device);
+ ~QWSBusMouseHandlerPrivate();
+
+ void suspend();
+ void resume();
+
+private slots:
+ void readMouseData();
+
+protected:
+ enum { mouseBufSize = 128 };
+ QWSBusMouseHandler *handler;
+ QSocketNotifier *mouseNotifier;
+ int mouseFD;
+ int mouseIdx;
+ int obstate;
+ uchar mouseBuf[mouseBufSize];
+};
+
+QWSBusMouseHandler::QWSBusMouseHandler(const QString &driver, const QString &device)
+ : QWSMouseHandler(driver, device)
+{
+ d = new QWSBusMouseHandlerPrivate(this, driver, device);
+}
+
+QWSBusMouseHandler::~QWSBusMouseHandler()
+{
+ delete d;
+}
+
+void QWSBusMouseHandler::suspend()
+{
+ d->suspend();
+}
+
+void QWSBusMouseHandler::resume()
+{
+ d->resume();
+}
+
+
+QWSBusMouseHandlerPrivate::QWSBusMouseHandlerPrivate(QWSBusMouseHandler *h,
+ const QString &, const QString &device)
+ : handler(h)
+
+{
+ QString mouseDev = device;
+ if (mouseDev.isEmpty())
+ mouseDev = QLatin1String("/dev/mouse");
+ obstate = -1;
+ mouseFD = -1;
+ mouseFD = open(mouseDev.toLocal8Bit(), O_RDWR | O_NDELAY);
+ if (mouseFD < 0)
+ mouseFD = open(mouseDev.toLocal8Bit(), O_RDONLY | O_NDELAY);
+ if (mouseFD < 0)
+ qDebug("Cannot open %s (%s)", qPrintable(mouseDev), strerror(errno));
+
+ // Clear pending input
+ tcflush(mouseFD,TCIFLUSH);
+ usleep(50000);
+
+ char buf[100]; // busmouse driver will not read if bufsize < 3, YYD
+ while (read(mouseFD, buf, 100) > 0) { } // eat unwanted replies
+
+ mouseIdx = 0;
+
+ mouseNotifier = new QSocketNotifier(mouseFD, QSocketNotifier::Read, this);
+ connect(mouseNotifier, SIGNAL(activated(int)),this, SLOT(readMouseData()));
+}
+
+QWSBusMouseHandlerPrivate::~QWSBusMouseHandlerPrivate()
+{
+ if (mouseFD >= 0) {
+ tcflush(mouseFD,TCIFLUSH); // yyd.
+ close(mouseFD);
+ }
+}
+
+
+void QWSBusMouseHandlerPrivate::suspend()
+{
+ mouseNotifier->setEnabled(false);
+}
+
+
+void QWSBusMouseHandlerPrivate::resume()
+{
+ mouseIdx = 0;
+ obstate = -1;
+ mouseNotifier->setEnabled(true);
+}
+
+void QWSBusMouseHandlerPrivate::readMouseData()
+{
+ int n;
+ // It'll only read 3 bytes a time and return all other buffer zeroed, thus cause protocol errors
+ for (;;) {
+ if (mouseBufSize - mouseIdx < 3)
+ break;
+ n = read(mouseFD, mouseBuf+mouseIdx, 3);
+ if (n != 3)
+ break;
+ mouseIdx += 3;
+ }
+
+ static const int accel_limit = 5;
+ static const int accel = 2;
+
+ int idx = 0;
+ int bstate = 0;
+ int dx = 0, dy = 0;
+ bool sendEvent = false;
+ int tdx = 0, tdy = 0;
+
+ while (mouseIdx-idx >= 3) {
+#if 0 // debug
+ qDebug("Got mouse data");
+#endif
+ uchar *mb = mouseBuf+idx;
+ bstate = 0;
+ dx = 0;
+ dy = 0;
+ sendEvent = false;
+ if (((mb[0] & 0x04)))
+ bstate |= Qt::LeftButton;
+ if (((mb[0] & 0x01)))
+ bstate |= Qt::RightButton;
+
+ dx=(signed char)mb[1];
+ dy=(signed char)mb[2];
+ sendEvent=true;
+
+ if (sendEvent) {
+ if (qAbs(dx) > accel_limit || qAbs(dy) > accel_limit) {
+ dx *= accel;
+ dy *= accel;
+ }
+ tdx += dx;
+ tdy += dy;
+ if (bstate != obstate) {
+ QPoint pos = handler->pos() + QPoint(tdx,-tdy);
+ handler->limitToScreen(pos);
+ handler->mouseChanged(pos,bstate);
+ sendEvent = false;
+ tdx = 0;
+ tdy = 0;
+ obstate = bstate;
+ }
+ }
+ idx += 3;
+ }
+ if (sendEvent) {
+ QPoint pos = handler->pos() + QPoint(tdx,-tdy);
+ handler->limitToScreen(pos);
+ handler->mouseChanged(pos,bstate);
+ }
+
+ int surplus = mouseIdx - idx;
+ for (int i = 0; i < surplus; i++)
+ mouseBuf[i] = mouseBuf[idx+i];
+ mouseIdx = surplus;
+}
+
+QT_END_NAMESPACE
+
+#include "qmousebus_qws.moc"
+
+#endif // QT_NO_QWS_MOUSE_BUS
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