Port of Qt to QNX

This makes Qt work on QNX 6.4.
 * no q3support, no phonon
 * no QSharedMemory, no QSystemSemaphore, no QProcess

Reviewed-By: Robert Griebl

16 files changed, 1259 insertions, 64 deletions

diff --git a/src/gui/embedded/embedded.pri b/src/gui/embedded/embedded.pri
index 07d1dcc036..e8eb9590d9 100644
--- a/src/gui/embedded/embedded.pri
+++ b/src/gui/embedded/embedded.pri
@@ -114,6 +114,12 @@ embedded {
 		SOURCES += embedded/qscreenlinuxfb_qws.cpp
 	}
 
+        contains( gfx-drivers, qnx ) {
+                HEADERS += embedded/qscreenqnx_qws.h
+                SOURCES += embedded/qscreenqnx_qws.cpp
+                LIBS += -lgf
+        }
+
 	contains( gfx-drivers, qvfb ) {
 		HEADERS += embedded/qscreenvfb_qws.h
 		SOURCES += embedded/qscreenvfb_qws.cpp
@@ -159,6 +165,11 @@ embedded {
 		SOURCES +=embedded/qkbdum_qws.cpp
 	}
 
+        contains( kbd-drivers, qnx ) {
+                HEADERS += embedded/qkbdqnx_qws.h
+                SOURCES += embedded/qkbdqnx_qws.cpp
+        }
+
 #
 # Mouse drivers
 #
@@ -186,5 +197,10 @@ embedded {
 	contains( mouse-drivers, linuxinput ) {
 		HEADERS +=embedded/qmouselinuxinput_qws.h
 		SOURCES +=embedded/qmouselinuxinput_qws.cpp
-	}
+        }
+
+        contains( mouse-drivers, qnx ) {
+                HEADERS += embedded/qmouseqnx_qws.h
+                SOURCES += embedded/qmouseqnx_qws.cpp
+        }
 }
diff --git a/src/gui/embedded/qkbddriverfactory_qws.cpp b/src/gui/embedded/qkbddriverfactory_qws.cpp
index b77eb72faa..fb10030827 100644
--- a/src/gui/embedded/qkbddriverfactory_qws.cpp
+++ b/src/gui/embedded/qkbddriverfactory_qws.cpp
@@ -48,6 +48,7 @@
 #include "qkbdlinuxinput_qws.h"
 #include "qkbdum_qws.h"
 #include "qkbdvfb_qws.h"
+#include "qkbdqnx_qws.h"
 #include <stdlib.h>
 #include "private/qfactoryloader_p.h"
 #include "qkbddriverplugin_qws.h"
@@ -101,6 +102,10 @@ Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
 QWSKeyboardHandler *QKbdDriverFactory::create(const QString& key, const QString& device)
 {
     QString driver = key.toLower();
+#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_KBD_QNX)
+    if (driver == QLatin1String("qnx") || driver.isEmpty())
+        return new QWSQnxKeyboardHandler(device);
+#endif
 #ifndef QT_NO_QWS_KEYBOARD
 # ifndef QT_NO_QWS_KBD_TTY
     if (driver == QLatin1String("tty") || driver.isEmpty())
@@ -143,6 +148,9 @@ QStringList QKbdDriverFactory::keys()
 {
     QStringList list;
 
+#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_KBD_QNX)
+    list << QLatin1String("QNX");
+#endif
 #ifndef QT_NO_QWS_KBD_TTY
     list << QLatin1String("TTY");
 #endif
diff --git a/src/gui/embedded/qkbdqnx_qws.cpp b/src/gui/embedded/qkbdqnx_qws.cpp
new file mode 100644
index 0000000000..06163c735a
--- /dev/null
+++ b/src/gui/embedded/qkbdqnx_qws.cpp
@@ -0,0 +1,231 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qkbdqnx_qws.h"
+#include "QtCore/qsocketnotifier.h"
+#include "QtCore/qdebug.h"
+
+#include <sys/dcmd_input.h>
+#include <photon/keycodes.h>
+
+#include "qplatformdefs.h"
+#include <errno.h>
+
+/*!
+    \class QWSQnxKeyboardHandler
+    \preliminary
+    \ingroup qws
+    \since 4.6
+    \internal
+
+    \brief The QWSQnxKeyboardHandler class implements a keyboard 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-kbd-qnx option, see the
+    \l{Qt for Embedded Linux Character Input} documentation for details.
+
+    In order to use this keyboard 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 keyboard
+    handler, set the QWS_KEYBOARD environment variable to \c{qnx}. By default,
+    the first keyboard device (\c{/dev/devi/keyboard0}) is used. To override, pass a device
+    name as the first and only parameter, for example
+    \c{QWS_KEYBOARD=qnx:/dev/devi/keyboard1; export QWS_KEYBOARD}.
+
+    \sa {Qt for Embedded Linux Character Input}, {Qt for Embedded Linux}
+*/
+
+/*!
+    Constructs a keyboard handler for the specified \a device, defaulting to
+    \c{/dev/devi/keyboard0}.
+
+    Note that you should never instanciate this class, instead let QKbdDriverFactory
+    handle the keyboard handlers.
+
+    \sa QKbdDriverFactory
+ */
+QWSQnxKeyboardHandler::QWSQnxKeyboardHandler(const QString &device)
+{
+    // open the keyboard device
+    keyboardFD = QT_OPEN(device.isEmpty() ? "/dev/devi/keyboard0" : device.toLatin1().constData(),
+                         QT_OPEN_RDONLY);
+    if (keyboardFD == -1) {
+        qErrnoWarning(errno, "QWSQnxKeyboardHandler: Unable to open device");
+        return;
+    }
+
+    // create a socket notifier so we'll wake up whenever keyboard input is detected.
+    QSocketNotifier *notifier = new QSocketNotifier(keyboardFD, QSocketNotifier::Read, this);
+    connect(notifier, SIGNAL(activated(int)), SLOT(socketActivated()));
+
+    qDebug() << "QWSQnxKeyboardHandler: connected.";
+
+}
+
+/*!
+    Destroys this keyboard handler and closes the connection to the keyboard device.
+ */
+QWSQnxKeyboardHandler::~QWSQnxKeyboardHandler()
+{
+    QT_CLOSE(keyboardFD);
+}
+
+/*! \internal
+    Translates the QNX keyboard events to Qt keyboard events
+ */
+void QWSQnxKeyboardHandler::socketActivated()
+{
+    _keyboard_packet packet;
+
+    // read one keyboard event
+    int bytesRead = QT_READ(keyboardFD, &packet, sizeof(_keyboard_packet));
+    if (bytesRead == -1) {
+        qErrnoWarning(errno, "QWSQnxKeyboardHandler::socketActivated(): Unable to read data.");
+        return;
+    }
+
+    // the bytes read must be the size of a keyboard packet
+    Q_ASSERT(bytesRead == sizeof(_keyboard_packet));
+
+#if 0
+    qDebug() << "keyboard got scancode"
+             << hex << packet.data.modifiers
+             << packet.data.flags
+             << packet.data.key_cap
+             << packet.data.key_sym
+             << packet.data.key_scan;
+#endif
+
+    // QNX is nice enough to translate the raw keyboard data into a QNX data structure
+    // Now we just have to translate it into a format Qt understands.
+
+    // figure out whether it's a press
+    bool isPress = packet.data.key_cap & KEY_DOWN;
+    // figure out wheter the key is still pressed and the key event is repeated
+    bool isRepeat = packet.data.key_cap & KEY_REPEAT;
+
+    Qt::Key key = Qt::Key_unknown;
+    int unicode = 0xffff;
+
+    // TODO - this switch is not complete!
+    switch (packet.data.key_scan) {
+    case KEYCODE_SPACE: key = Qt::Key_Space; unicode = 0x20; break;
+    case KEYCODE_F1: key = Qt::Key_F1; break;
+    case KEYCODE_F2: key = Qt::Key_F2; break;
+    case KEYCODE_F3: key = Qt::Key_F3; break;
+    case KEYCODE_F4: key = Qt::Key_F4; break;
+    case KEYCODE_F5: key = Qt::Key_F5; break;
+    case KEYCODE_F6: key = Qt::Key_F6; break;
+    case KEYCODE_F7: key = Qt::Key_F7; break;
+    case KEYCODE_F8: key = Qt::Key_F8; break;
+    case KEYCODE_F9: key = Qt::Key_F9; break;
+    case KEYCODE_F10: key = Qt::Key_F10; break;
+    case KEYCODE_F11: key = Qt::Key_F11; break;
+    case KEYCODE_F12: key = Qt::Key_F12; break;
+    case KEYCODE_BACKSPACE: key = Qt::Key_Backspace; break;
+    case KEYCODE_TAB: key = Qt::Key_Tab; break;
+    case KEYCODE_RETURN: key = Qt::Key_Return; break;
+    case KEYCODE_KP_ENTER: key = Qt::Key_Enter; break;
+    case KEYCODE_UP:
+    case KEYCODE_KP_UP:
+        key = Qt::Key_Up; break;
+    case KEYCODE_DOWN:
+    case KEYCODE_KP_DOWN:
+        key = Qt::Key_Down; break;
+    case KEYCODE_LEFT:
+    case KEYCODE_KP_LEFT:
+        key = Qt::Key_Left; break;
+    case KEYCODE_RIGHT:
+    case KEYCODE_KP_RIGHT:
+        key = Qt::Key_Right; break;
+    case KEYCODE_HOME:
+    case KEYCODE_KP_HOME:
+        key = Qt::Key_Home; break;
+    case KEYCODE_END:
+    case KEYCODE_KP_END:
+        key = Qt::Key_End; break;
+    case KEYCODE_PG_UP:
+    case KEYCODE_KP_PG_UP:
+        key = Qt::Key_PageUp; break;
+    case KEYCODE_PG_DOWN:
+    case KEYCODE_KP_PG_DOWN:
+        key = Qt::Key_PageDown; break;
+    case KEYCODE_INSERT:
+    case KEYCODE_KP_INSERT:
+        key = Qt::Key_Insert; break;
+    case KEYCODE_DELETE:
+    case KEYCODE_KP_DELETE:
+        key = Qt::Key_Delete; break;
+    case KEYCODE_ESCAPE:
+        key = Qt::Key_Escape; break;
+    default: // none of the above, try the key_scan directly
+        unicode = packet.data.key_scan;
+        break;
+    }
+
+    // figure out the modifiers that are currently pressed
+    Qt::KeyboardModifiers modifiers = Qt::NoModifier;
+    if (packet.data.flags & KEYMOD_SHIFT)
+        modifiers |= Qt::ShiftModifier;
+    if (packet.data.flags & KEYMOD_CTRL)
+        modifiers |= Qt::ControlModifier;
+    if (packet.data.flags & KEYMOD_ALT)
+        modifiers |= Qt::AltModifier;
+
+    // if the unicode value is not ascii, we ignore it.
+    // TODO - do a complete mapping between all QNX scan codes and Qt codes
+    if (unicode != 0xffff && !isascii(unicode))
+        return; // unprintable character
+
+    // call processKeyEvent. This is where all the magic happens to insert a
+    // key event into Qt's event loop.
+    // Note that for repeated key events, isPress must be true
+    // (on QNX, isPress is not set when the key event is repeated).
+    processKeyEvent(unicode, key, modifiers, isPress || isRepeat, isRepeat);
+}
diff --git a/src/gui/embedded/qkbdqnx_qws.h b/src/gui/embedded/qkbdqnx_qws.h
new file mode 100644
index 0000000000..c046c8d81d
--- /dev/null
+++ b/src/gui/embedded/qkbdqnx_qws.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QKBDQNX_QWS_H
+#define QKBDQNX_QWS_H
+
+#include <QtGui/qapplication.h>
+#include <QtGui/qkbd_qws.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+#if !defined(QT_NO_QWS_KEYBOARD) && !defined(QT_NO_QWS_KBD_QNX)
+
+class Q_GUI_EXPORT QWSQnxKeyboardHandler : public QObject, public QWSKeyboardHandler
+{
+    Q_OBJECT
+public:
+    QWSQnxKeyboardHandler(const QString &device);
+    ~QWSQnxKeyboardHandler();
+
+private Q_SLOTS:
+    void socketActivated();
+
+private:
+    int keyboardFD;
+};
+
+#endif // QT_NO_QWS_KEYBOARD
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QKBDQNX_QWS_H
diff --git a/src/gui/embedded/qlock.cpp b/src/gui/embedded/qlock.cpp
index 305832cf5d..9592a4d39d 100644
--- a/src/gui/embedded/qlock.cpp
+++ b/src/gui/embedded/qlock.cpp
@@ -41,9 +41,46 @@
 
 #include "qlock_p.h"
 
-#ifndef QT_NO_QWS_MULTIPROCESS
+QT_BEGIN_NAMESPACE
+
+#ifdef QT_NO_QWS_MULTIPROCESS
+
+/* no multiprocess - use a dummy */
+
+QLock::QLock(const QString & /*filename*/, char /*id*/, bool /*create*/)
+    : type(Read), data(0)
+{
+}
+
+QLock::~QLock()
+{
+}
+
+bool QLock::isValid() const
+{
+    return true;
+}
+
+void QLock::lock(Type t)
+{
+    data = (QLockData *)-1;
+    type = t;
+}
+
+void QLock::unlock()
+{
+    data = 0;
+}
+
+bool QLock::locked() const
+{
+    return data;
+}
+
+#else // QT_NO_QWS_MULTIPROCESS
 
 #include "qwssignalhandler_p.h"
+
 #include <unistd.h>
 #include <sys/types.h>
 #if defined(Q_OS_DARWIN)
@@ -71,16 +108,10 @@ union semun {
 #include <qdebug.h>
 #include <signal.h>
 
-#endif // QT_NO_QWS_MULTIPROCESS
-
 #include <private/qcore_unix_p.h> // overrides QT_OPEN
 
 #define MAX_LOCKS   200            // maximum simultaneous read locks
 
-QT_BEGIN_NAMESPACE
-
-
-#ifndef QT_NO_QWS_MULTIPROCESS
 class QLockData
 {
 public:
@@ -91,7 +122,6 @@ public:
     int count;
     bool owned;
 };
-#endif // QT_NO_QWS_MULTIPROCESS
 
 /*!
     \class QLock
@@ -126,11 +156,6 @@ public:
 
 QLock::QLock(const QString &filename, char id, bool create)
 {
-#ifdef QT_NO_QWS_MULTIPROCESS
-    Q_UNUSED(filename);
-    Q_UNUSED(id);
-    Q_UNUSED(create);
-#else
     data = new QLockData;
     data->count = 0;
 #ifdef Q_NO_SEMAPHORE
@@ -163,7 +188,6 @@ QLock::QLock(const QString &filename, char id, bool create)
                  qPrintable(filename), id);
         qDebug() << "Error" << eno << strerror(eno);
     }
-#endif
 }
 
 /*!
@@ -174,7 +198,6 @@ QLock::QLock(const QString &filename, char id, bool create)
 
 QLock::~QLock()
 {
-#ifndef QT_NO_QWS_MULTIPROCESS
     if (locked())
         unlock();
 #ifdef Q_NO_SEMAPHORE
@@ -188,7 +211,6 @@ QLock::~QLock()
         QWSSignalHandler::instance()->removeSemaphore(data->id);
 #endif
     delete data;
-#endif
 }
 
 /*!
@@ -200,11 +222,7 @@ QLock::~QLock()
 
 bool QLock::isValid() const
 {
-#ifndef QT_NO_QWS_MULTIPROCESS
     return (data->id != -1);
-#else
-    return true;
-#endif
 }
 
 /*!
@@ -221,9 +239,6 @@ bool QLock::isValid() const
 
 void QLock::lock(Type t)
 {
-#ifdef QT_NO_QWS_MULTIPROCESS
-    Q_UNUSED(t);
-#else
     if (!data->count) {
 #ifdef Q_NO_SEMAPHORE
         int op = LOCK_SH;
@@ -256,7 +271,6 @@ void QLock::lock(Type t)
 #endif
     }
     data->count++;
-#endif
 }
 
 /*!
@@ -269,7 +283,6 @@ void QLock::lock(Type t)
 
 void QLock::unlock()
 {
-#ifndef QT_NO_QWS_MULTIPROCESS
     if(data->count) {
         data->count--;
         if(!data->count) {
@@ -298,7 +311,6 @@ void QLock::unlock()
     } else {
         qDebug("Unlock without corresponding lock");
     }
-#endif
 }
 
 /*!
@@ -310,11 +322,9 @@ void QLock::unlock()
 
 bool QLock::locked() const
 {
-#ifndef QT_NO_QWS_MULTIPROCESS
     return (data->count > 0);
-#else
-    return false;
-#endif
 }
 
+#endif // QT_NO_QWS_MULTIPROCESS
+
 QT_END_NAMESPACE
diff --git a/src/gui/embedded/qmousedriverfactory_qws.cpp b/src/gui/embedded/qmousedriverfactory_qws.cpp
index 46898aed87..6d717505a6 100644
--- a/src/gui/embedded/qmousedriverfactory_qws.cpp
+++ b/src/gui/embedded/qmousedriverfactory_qws.cpp
@@ -47,6 +47,7 @@
 #include "qmouselinuxinput_qws.h"
 #include "qmousevfb_qws.h"
 #include "qmousetslib_qws.h"
+#include "qmouseqnx_qws.h"
 #include <stdlib.h>
 #include "private/qfactoryloader_p.h"
 #include "qmousedriverplugin_qws.h"
@@ -102,6 +103,10 @@ Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
 QWSMouseHandler *QMouseDriverFactory::create(const QString& key, const QString &device)
 {
     QString driver = key.toLower();
+#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_MOUSE_QNX)
+    if (driver == QLatin1String("qnx") || driver.isEmpty())
+        return new QQnxMouseHandler(key, device);
+#endif
 #ifndef QT_NO_QWS_MOUSE_LINUXTP
     if (driver == QLatin1String("linuxtp") || driver.isEmpty())
         return new QWSLinuxTPMouseHandler(key, device);
@@ -149,6 +154,9 @@ QStringList QMouseDriverFactory::keys()
 {
     QStringList list;
 
+#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_MOUSE_QNX)
+    list << QLatin1String("QNX");
+#endif
 #ifndef QT_NO_QWS_MOUSE_LINUXTP
     list << QLatin1String("LinuxTP");
 #endif
diff --git a/src/gui/embedded/qmousepc_qws.cpp b/src/gui/embedded/qmousepc_qws.cpp
index 317bb8af04..2d627729ae 100644
--- a/src/gui/embedded/qmousepc_qws.cpp
+++ b/src/gui/embedded/qmousepc_qws.cpp
@@ -332,7 +332,7 @@ protected:
         tty.c_oflag     = 0;
         tty.c_lflag     = 0;
         tty.c_cflag     = f | CREAD | CLOCAL | HUPCL;
-#if !defined(Q_OS_DARWIN) && !defined(Q_OS_SOLARIS) && !defined(Q_OS_INTEGRITY)
+#ifdef Q_OS_LINUX
         tty.c_line      = 0;
 #endif
         tty.c_cc[VTIME] = 0;
diff --git a/src/gui/embedded/qmouseqnx_qws.cpp b/src/gui/embedded/qmouseqnx_qws.cpp
new file mode 100644
index 0000000000..98f8f06003
--- /dev/null
+++ b/src/gui/embedded/qmouseqnx_qws.cpp
@@ -0,0 +1,190 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
+
diff --git a/src/gui/embedded/qmouseqnx_qws.h b/src/gui/embedded/qmouseqnx_qws.h
new file mode 100644
index 0000000000..a61562e2fb
--- /dev/null
+++ b/src/gui/embedded/qmouseqnx_qws.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMOUSE_QNX_H
+#define QMOUSE_QNX_H
+
+#include <QtCore/qobject.h>
+#include <QtGui/qmouse_qws.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QSocketNotifier;
+
+class Q_GUI_EXPORT QQnxMouseHandler : public QObject, public QWSMouseHandler
+{
+    Q_OBJECT
+public:
+    explicit QQnxMouseHandler(const QString &driver = QString(),
+                              const QString &device = QString());
+    ~QQnxMouseHandler();
+
+    void resume();
+    void suspend();
+
+private Q_SLOTS:
+    void socketActivated();
+
+private:
+    QSocketNotifier *mouseNotifier;
+    int mouseFD;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QMOUSE_QWS_H
diff --git a/src/gui/embedded/qscreendriverfactory_qws.cpp b/src/gui/embedded/qscreendriverfactory_qws.cpp
index 229062775e..b531798b74 100644
--- a/src/gui/embedded/qscreendriverfactory_qws.cpp
+++ b/src/gui/embedded/qscreendriverfactory_qws.cpp
@@ -47,6 +47,7 @@
 #include "qscreentransformed_qws.h"
 #include "qscreenvfb_qws.h"
 #include "qscreenmulti_qws_p.h"
+#include "qscreenqnx_qws.h"
 #include <stdlib.h>
 #include "private/qfactoryloader_p.h"
 #include "qscreendriverplugin_qws.h"
@@ -105,6 +106,10 @@ Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
 QScreen *QScreenDriverFactory::create(const QString& key, int displayId)
 {
     QString driver = key.toLower();
+#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_QNX)
+    if (driver == QLatin1String("qnx") || driver.isEmpty())
+        return new QQnxScreen(displayId);
+#endif
 #ifndef QT_NO_QWS_QVFB
     if (driver == QLatin1String("qvfb") || driver.isEmpty())
         return new QVFbScreen(displayId);
@@ -146,6 +151,9 @@ QStringList QScreenDriverFactory::keys()
 {
     QStringList list;
 
+#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_QNX)
+    list << QLatin1String("QNX");
+#endif
 #ifndef QT_NO_QWS_QVFB
     list << QLatin1String("QVFb");
 #endif
diff --git a/src/gui/embedded/qscreenqnx_qws.cpp b/src/gui/embedded/qscreenqnx_qws.cpp
new file mode 100644
index 0000000000..7101bc7865
--- /dev/null
+++ b/src/gui/embedded/qscreenqnx_qws.cpp
@@ -0,0 +1,447 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscreenqnx_qws.h"
+#include "qdebug.h"
+
+#include <gf/gf.h>
+
+// This struct holds all the pointers to QNX's internals
+struct QQnxScreenContext
+{
+    inline QQnxScreenContext()
+        : device(0), display(0), layer(0), hwSurface(0), memSurface(0), context(0)
+    {}
+
+    gf_dev_t device;
+    gf_dev_info_t deviceInfo;
+    gf_display_t display;
+    gf_display_info_t displayInfo;
+    gf_layer_t layer;
+    gf_surface_t hwSurface;
+    gf_surface_t memSurface;
+    gf_surface_info_t memSurfaceInfo;
+    gf_context_t context;
+};
+
+/*!
+    \class QQnxScreen
+    \preliminary
+    \ingroup qws
+    \since 4.6
+    \internal
+
+    \brief The QQnxScreen class implements a screen driver
+    for QNX io-display based devices.
+
+    Note - you never have to instanciate this class, the QScreenDriverFactory
+    does that for us based on the \c{QWS_DISPLAY} environment variable.
+
+    To activate this driver, set \c{QWS_DISPLAY} to \c{qnx}.
+
+    Example:
+    \c{QWS_DISPLAY=qnx; export QWS_DISPLAY}
+
+    By default, the main layer of the first display of the first device is used.
+    If you have multiple graphic cards, multiple displays or multiple layers and
+    don't want to connect to the default, you can override that with setting
+    the corresponding options \c{device}, \c{display} or \c{layer} in the \c{QWS_DISPLAY} variable:
+
+    \c{QWS_DISPLAY=qnx:device=3:display=4:layer=5}
+
+    In addition, it is suggested to set the physical width and height of the display.
+    QQnxScreen will use that information to compute the dots per inch (DPI) in order to render
+    fonts correctly. If this informaiton is omitted, QQnxScreen defaults to 72 dpi.
+
+    \c{QWS_DISPLAY=qnx:mmWidth=120:mmHeight=80}
+
+    \c{mmWidth} and \c{mmHeight} are the physical width/height of the screen in millimeters.
+
+    \sa QScreen, QScreenDriverPlugin, {Running Qt for Embedded Linux Applications}{Running Applications}
+*/
+
+/*!
+    Constructs a QQnxScreen object. The \a display_id argument
+    identifies the Qt for Embedded Linux server to connect to.
+*/
+QQnxScreen::QQnxScreen(int display_id)
+    : QScreen(display_id), d(new QQnxScreenContext)
+{
+}
+
+/*!
+    Destroys this QQnxScreen object.
+*/
+QQnxScreen::~QQnxScreen()
+{
+    delete d;
+}
+
+/*! \reimp
+*/
+bool QQnxScreen::initDevice()
+{
+    // implement this if you have multiple processes that want to access the display
+    // (not required if QT_NO_QWS_MULTIPROCESS is set)
+    return true;
+}
+
+/*! \internal
+  Attaches to the named device \a name.
+*/
+static bool attachDevice(QQnxScreenContext * const d, const char *name)
+{
+    int ret = gf_dev_attach(&d->device, name, &d->deviceInfo);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_dev_attach(%s) failed with error code %d", name, ret);
+        return false;
+    }
+    return true;
+}
+
+/*! \internal
+  Attaches to the display at index \a displayIndex.
+ */
+static bool attachDisplay(QQnxScreenContext * const d, int displayIndex)
+{
+    int ret = gf_display_attach(&d->display, d->device, displayIndex, &d->displayInfo);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_display_attach(%d) failed with error code %d",
+                displayIndex, ret);
+        return false;
+    }
+    return true;
+}
+
+/*! \internal
+  Attaches to the layer \a layerIndex.
+ */
+static bool attachLayer(QQnxScreenContext * const d, int layerIndex)
+{
+    int ret = gf_layer_attach(&d->layer, d->display, layerIndex, 0);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_layer_attach(%d) failed with error code %d", layerIndex,
+                ret);
+        return false;
+    }
+    gf_layer_enable(d->layer);
+
+    return true;
+}
+
+/*! \internal
+  Creates a new hardware surface (usually on the Gfx card memory) with the dimensions \a w * \a h.
+ */
+static bool createHwSurface(QQnxScreenContext * const d, int w, int h)
+{
+    int ret = gf_surface_create_layer(&d->hwSurface, &d->layer, 1, 0,
+                w, h, GF_FORMAT_ARGB8888, 0, 0);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_surface_create_layer(%dx%d) failed with error code %d",
+                w, h, ret);
+        return false;
+    }
+
+    gf_layer_set_surfaces(d->layer, &d->hwSurface, 1);
+
+    ret = gf_layer_update(d->layer, 0);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_layer_update() failed with error code %d\n", ret);
+        return false;
+    }
+
+    return true;
+}
+
+/*! \internal
+  Creates an in-memory, linear accessible surface of dimensions \a w * \a h.
+  This is the main surface that QWS blits to.
+ */
+static bool createMemSurface(QQnxScreenContext * const d, int w, int h)
+{
+    // Note: gf_surface_attach() could also be used, so we'll create the buffer
+    // and let the surface point to it. Here, we use surface_create instead.
+
+    int ret = gf_surface_create(&d->memSurface, d->device, w, h,
+                GF_FORMAT_ARGB8888, 0,
+                GF_SURFACE_CREATE_CPU_FAST_ACCESS | GF_SURFACE_CREATE_CPU_LINEAR_ACCESSIBLE
+                | GF_SURFACE_PHYS_CONTIG);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_surface_create(%dx%d) failed with error code %d",
+                w, h, ret);
+        return false;
+    }
+
+    gf_surface_get_info(d->memSurface, &d->memSurfaceInfo);
+
+    if (d->memSurfaceInfo.sid == unsigned(GF_SID_INVALID)) {
+        qWarning("QQnxScreen: gf_surface_get_info() failed.");
+        return false;
+    }
+
+    return true;
+}
+
+/* \internal
+   Creates a QNX gf context and sets our memory surface on it.
+ */
+static bool createContext(QQnxScreenContext * const d)
+{
+    int ret = gf_context_create(&d->context);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_context_create() failed with error code %d", ret);
+        return false;
+    }
+
+    ret = gf_context_set_surface(d->context, d->memSurface);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_context_set_surface() failed with error code %d", ret);
+        return false;
+    }
+
+    return true;
+}
+
+/*! \reimp
+  Connects to QNX's io-display based device based on the \a displaySpec parameters
+  from the \c{QWS_DISPLAY} environment variable. See the QQnxScreen class documentation
+  for possible parameters.
+
+  \sa QQnxScreen
+ */
+bool QQnxScreen::connect(const QString &displaySpec)
+{
+    const QStringList params = displaySpec.split(QLatin1Char(':'), QString::SkipEmptyParts);
+
+    bool isOk = false;
+    QRegExp deviceRegExp(QLatin1String("^device=(.+)$"));
+    if (params.indexOf(deviceRegExp) != -1) {
+        isOk = attachDevice(d, deviceRegExp.cap(1).toLocal8Bit().constData());
+    } else {
+        // no device specified - attach to device 0 (the default)
+        isOk = attachDevice(d, GF_DEVICE_INDEX(0));
+    }
+
+    if (!isOk)
+        return false;
+
+    qDebug("QQnxScreen: Attached to Device, number of displays: %d", d->deviceInfo.ndisplays);
+
+    // default to display 0
+    int displayIndex = 0;
+    QRegExp displayRegexp(QLatin1String("^display=(\\d+)$"));
+    if (params.indexOf(displayRegexp) != -1) {
+        displayIndex = displayRegexp.cap(1).toInt();
+    }
+
+    if (!attachDisplay(d, displayIndex))
+        return false;
+
+    qDebug("QQnxScreen: Attached to Display %d, resolution %dx%d, refresh %d Hz",
+            displayIndex, d->displayInfo.xres, d->displayInfo.yres,
+            d->displayInfo.refresh);
+
+
+    // default to main_layer_index from the displayInfo struct
+    int layerIndex = 0;
+    QRegExp layerRegexp(QLatin1String("^layer=(\\d+)$"));
+    if (params.indexOf(layerRegexp) != -1) {
+        layerIndex = layerRegexp.cap(1).toInt();
+    } else {
+        layerIndex = d->displayInfo.main_layer_index;
+    }
+
+    if (!attachLayer(d, layerIndex))
+        return false;
+
+    // tell QWSDisplay the width and height of the display
+    w = dw = d->displayInfo.xres;
+    h = dh = d->displayInfo.yres;
+
+    // we only support 32 bit displays for now.
+    QScreen::d = 32;
+
+    // assume 72 dpi as default, to calculate the physical dimensions if not specified
+    const int defaultDpi = 72;
+
+    // Handle display physical size spec.
+    QRegExp mmWidthRegexp(QLatin1String("^mmWidth=(\\d+)$"));
+    if (params.indexOf(mmWidthRegexp) == -1) {
+        physWidth = qRound(dw * 25.4 / defaultDpi);
+    } else {
+        physWidth = mmWidthRegexp.cap(1).toInt();
+    }
+
+    QRegExp mmHeightRegexp(QLatin1String("^mmHeight=(\\d+)$"));
+    if (params.indexOf(mmHeightRegexp) == -1) {
+        physHeight = qRound(dh * 25.4 / defaultDpi);
+    } else {
+        physHeight = mmHeightRegexp.cap(1).toInt();
+    }
+
+    // create a hardware surface with our dimensions. In the old days, it was possible
+    // to get a pointer directly to the hw surface, so we could blit directly. Now, we
+    // have to use one indirection more, because it's not guaranteed that the hw surface
+    // is mappable into our process.
+    if (!createHwSurface(d, w, h))
+        return false;
+
+    // create an in-memory linear surface that is used by QWS. QWS will blit directly in here.
+    if (!createMemSurface(d, w, h))
+        return false;
+
+    // set the address of the in-memory buffer that QWS is blitting to
+    data = d->memSurfaceInfo.vaddr;
+    // set the line stepping
+    lstep = d->memSurfaceInfo.stride;
+
+    // the overall size of the in-memory buffer is linestep * height
+    size = mapsize = lstep * h;
+
+    // create a QNX drawing context
+    if (!createContext(d))
+        return false;
+
+    // we're always using a software cursor for now. Initialize it here.
+    QScreenCursor::initSoftwareCursor();
+
+    // done, the driver should be connected to the display now.
+    return true;
+}
+
+/*! \reimp
+ */
+void QQnxScreen::disconnect()
+{
+    if (d->context)
+        gf_context_free(d->context);
+
+    if (d->memSurface)
+        gf_surface_free(d->memSurface);
+
+    if (d->hwSurface)
+        gf_surface_free(d->hwSurface);
+
+    if (d->layer)
+        gf_layer_detach(d->layer);
+
+    if (d->display)
+        gf_display_detach(d->display);
+
+    if (d->device)
+        gf_dev_detach(d->device);
+
+    d->memSurface = 0;
+    d->hwSurface = 0;
+    d->context = 0;
+    d->layer = 0;
+    d->display = 0;
+    d->device = 0;
+}
+
+/*! \reimp
+ */
+void QQnxScreen::shutdownDevice()
+{
+}
+
+
+/*! \reimp
+  QQnxScreen doesn't support setting the mode, use io-display instead.
+ */
+void QQnxScreen::setMode(int,int,int)
+{
+    qWarning("QQnxScreen: Unable to change mode, use io-display instead.");
+}
+
+/*! \reimp
+ */
+bool QQnxScreen::supportsDepth(int depth) const
+{
+    // only 32-bit for the moment
+    return depth == 32;
+}
+
+/*! \reimp
+ */
+void QQnxScreen::exposeRegion(QRegion r, int changing)
+{
+    // here is where the actual magic happens. QWS will call exposeRegion whenever
+    // a region on the screen is dirty and needs to be updated on the actual screen.
+
+    // first, call the parent implementation. The parent implementation will update
+    // the region on our in-memory surface
+    QScreen::exposeRegion(r, changing);
+
+    // now our in-memory surface should be up to date with the latest changes.
+    // the code below copies the region from the in-memory surface to the hardware.
+
+    // just get the bounding rectangle of the region. Most screen updates are rectangular
+    // anyways. Code could be optimized to blit each and every member of the region
+    // individually, but in real life, the speed-up is neglectable
+    const QRect br = r.boundingRect();
+    if (br.isEmpty())
+        return; // ignore empty regions because gf_draw_blit2 doesn't like 0x0 dimensions
+
+    // start drawing.
+    int ret = gf_draw_begin(d->context);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_draw_begin() failed with error code %d", ret);
+        return;
+    }
+
+    // blit the changed region from the memory surface to the hardware surface
+    ret = gf_draw_blit2(d->context, d->memSurface, d->hwSurface,
+            br.x(), br.y(), br.right(), br.bottom(), br.x(), br.y());
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_draw_blit2() failed with error code %d", ret);
+    }
+
+    // flush all drawing commands (in our case, a single blit)
+    ret = gf_draw_flush(d->context);
+    if (ret != GF_ERR_OK) {
+        qWarning("QQnxScreen: gf_draw_flush() failed with error code %d", ret);
+    }
+
+    // tell QNX that we're done drawing.
+    gf_draw_end(d->context);
+}
+
diff --git a/src/gui/embedded/qscreenqnx_qws.h b/src/gui/embedded/qscreenqnx_qws.h
new file mode 100644
index 0000000000..837c0613dd
--- /dev/null
+++ b/src/gui/embedded/qscreenqnx_qws.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCREENQNX_QWS_H
+#define QSCREENQNX_QWS_H
+
+#include <QtGui/qscreen_qws.h>
+
+#ifndef QT_NO_QWS_QNX
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+struct QQnxScreenContext;
+
+class QQnxScreen : public QScreen
+{
+public:
+    explicit QQnxScreen(int display_id);
+    ~QQnxScreen();
+
+    bool initDevice();
+    bool connect(const QString &displaySpec);
+    void disconnect();
+    void shutdownDevice();
+    void setMode(int,int,int);
+    bool supportsDepth(int) const;
+
+    void exposeRegion(QRegion r, int changing);
+
+private:
+    QQnxScreenContext * const d;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QT_NO_QWS_QNX
+
+#endif
diff --git a/src/gui/embedded/qwindowsystem_qws.cpp b/src/gui/embedded/qwindowsystem_qws.cpp
index 0580198e5c..624ba84dbd 100644
--- a/src/gui/embedded/qwindowsystem_qws.cpp
+++ b/src/gui/embedded/qwindowsystem_qws.cpp
@@ -39,6 +39,8 @@
 **
 ****************************************************************************/
 
+#include "qplatformdefs.h"
+
 #include "qwindowsystem_qws.h"
 #include "qwsevent_qws.h"
 #include "qwscommand_qws_p.h"
@@ -71,24 +73,26 @@
 
 #include <qdebug.h>
 
-#include <unistd.h>
+#include "qkbddriverfactory_qws.h"
+#include "qmousedriverfactory_qws.h"
+
+#include <qbuffer.h>
+#include <qdir.h>
+
+#include <private/qwindowsurface_qws_p.h>
+#include <private/qfontengine_qpf_p.h>
+
+#include "qwindowsystem_p.h"
+
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
 
 #ifndef QT_NO_QWS_MULTIPROCESS
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#ifndef Q_OS_DARWIN
-# include <sys/sem.h>
-#endif
 #include <sys/param.h>
 #include <sys/mount.h>
 #endif
-#include <signal.h>
-#include <fcntl.h>
 
 #if !defined(QT_NO_SOUND) && !defined(Q_OS_DARWIN)
 #ifdef QT_USE_OLD_QWS_SOUND
@@ -101,17 +105,6 @@
 #endif
 #endif
 
-#include "qkbddriverfactory_qws.h"
-#include "qmousedriverfactory_qws.h"
-
-#include <qbuffer.h>
-#include <qdir.h>
-
-#include <private/qwindowsurface_qws_p.h>
-#include <private/qfontengine_qpf_p.h>
-
-#include "qwindowsystem_p.h"
-
 //#define QWS_DEBUG_FONTCLEANUP
 
 QT_BEGIN_NAMESPACE
@@ -1400,7 +1393,7 @@ void QWSServerPrivate::initServer(int flags)
 #ifndef QT_NO_QWS_MULTIPROCESS
 
     if (!geteuid()) {
-#if !defined(Q_OS_FREEBSD) && !defined(Q_OS_SOLARIS) && !defined(Q_OS_DARWIN) && !defined(QT_LINUXBASE)
+#if defined(Q_OS_LINUX) && !defined(QT_LINUXBASE)
         if(mount(0,"/var/shm", "shm", 0, 0)) {
             /* This just confuses people with 2.2 kernels
             if (errno != EBUSY)
diff --git a/src/gui/kernel/qapplication_qws.cpp b/src/gui/kernel/qapplication_qws.cpp
index 6deeaf4626..00695faea5 100644
--- a/src/gui/kernel/qapplication_qws.cpp
+++ b/src/gui/kernel/qapplication_qws.cpp
@@ -198,7 +198,14 @@ QString qws_dataDir()
     static QString result;
     if (!result.isEmpty())
         return result;
-    QByteArray dataDir = QString::fromLatin1("/tmp/qtembedded-%1").arg(qws_display_id).toLocal8Bit();
+    QByteArray dataDir;
+#ifdef QT_QWS_TEMP_DIR
+    dataDir = QT_QWS_TEMP_DIR;
+#else
+    dataDir = "/tmp";
+#endif
+    dataDir += "/qtembedded-";
+    dataDir += QByteArray::number(qws_display_id);
     if (QT_MKDIR(dataDir, 0700)) {
         if (errno != EEXIST) {
             qFatal("Cannot create Qt for Embedded Linux data directory: %s", dataDir.constData());
diff --git a/src/gui/text/qfontdatabase_qws.cpp b/src/gui/text/qfontdatabase_qws.cpp
index d348e1bdd2..34239ff3b6 100644
--- a/src/gui/text/qfontdatabase_qws.cpp
+++ b/src/gui/text/qfontdatabase_qws.cpp
@@ -360,7 +360,7 @@ static QString qwsFontPath()
     return fontpath;
 }
 
-#ifdef QFONTDATABASE_DEBUG
+#if defined(QFONTDATABASE_DEBUG) && defined(QT_FONTS_ARE_RESOURCES)
 class FriendlyResource : public QResource
 {
 public:
@@ -694,8 +694,12 @@ QFontEngine *loadSingleEngine(int script, const QFontPrivate *fp,
         QFontDef def = request;
         def.pixelSize = pixelSize;
 
+#ifdef QT_NO_QWS_SHARE_FONTS
+        bool shareFonts = false;
+#else
         static bool dontShareFonts = !qgetenv("QWS_NO_SHARE_FONTS").isEmpty();
         bool shareFonts = !dontShareFonts;
+#endif
 
         QFontEngine *engine = 0;
 
diff --git a/src/gui/text/qfontengine_qpf.cpp b/src/gui/text/qfontengine_qpf.cpp
index b2556944e1..ed8abb8c39 100644
--- a/src/gui/text/qfontengine_qpf.cpp
+++ b/src/gui/text/qfontengine_qpf.cpp
@@ -331,16 +331,37 @@ QFontEngineQPF::QFontEngineQPF(const QFontDef &def, int fileDescriptor, QFontEng
 #if defined(DEBUG_FONTENGINE)
             qDebug() << "found existing qpf:" << fileName;
 #endif
-            if (::access(encodedName, W_OK | R_OK) == 0)
-                fd = QT_OPEN(encodedName, O_RDWR, 0);
-            else if (::access(encodedName, R_OK) == 0)
-                fd = QT_OPEN(encodedName, O_RDONLY, 0);
+            if (::access(encodedName, W_OK | R_OK) == 0) {
+                fd = QT_OPEN(encodedName, O_RDWR);
+            }
+            // read-write access failed - try read-only access
+            if (fd == -1 && ::access(encodedName, R_OK) == 0) {
+                fd = QT_OPEN(encodedName, O_RDONLY);
+                if (fd == -1) {
+#if defined(DEBUG_FONTENGINE)
+                    qErrnoWarning("QFontEngineQPF: unable to open %s", encodedName.constData());
+#endif
+                    return;
+                }
+            }
+            if (fd == -1) {
+#if defined(DEBUG_FONTENGINE)
+                qWarning("QFontEngineQPF: insufficient access rights to %s", encodedName.constData());
+#endif
+                return;
+            }
         } else {
 #if defined(DEBUG_FONTENGINE)
             qDebug() << "creating qpf on the fly:" << fileName;
 #endif
             if (::access(QFile::encodeName(qws_fontCacheDir()), W_OK) == 0) {
                 fd = QT_OPEN(encodedName, O_RDWR | O_EXCL | O_CREAT, 0644);
+                if (fd == -1) {
+#if defined(DEBUG_FONTENGINE)
+                    qErrnoWarning(errno, "QFontEngineQPF: open() failed for %s", encodedName.constData());
+#endif
+                    return;
+                }
 
                 QBuffer buffer;
                 buffer.open(QIODevice::ReadWrite);
@@ -348,7 +369,17 @@ QFontEngineQPF::QFontEngineQPF(const QFontDef &def, int fileDescriptor, QFontEng
                 generator.generate();
                 buffer.close();
                 const QByteArray &data = buffer.data();
-                QT_WRITE(fd, data.constData(), data.size());
+                if (QT_WRITE(fd, data.constData(), data.size()) == -1) {
+#if defined(DEBUG_FONTENGINE)
+                    qErrnoWarning(errno, "QFontEngineQPF: write() failed for %s", encodedName.constData());
+#endif
+                    return;
+                }
+            } else {
+#if defined(DEBUG_FONTENGINE)
+                qErrnoWarning(errno, "QFontEngineQPF: access() failed for %s", qPrintable(qws_fontCacheDir()));
+#endif
+                return;
             }
         }
     }
@@ -356,7 +387,7 @@ QFontEngineQPF::QFontEngineQPF(const QFontDef &def, int fileDescriptor, QFontEng
     QT_STATBUF st;
     if (QT_FSTAT(fd, &st)) {
 #if defined(DEBUG_FONTENGINE)
-        qDebug() << "stat failed!";
+        qErrnoWarning(errno, "QFontEngineQPF: fstat failed!");
 #endif
         return;
     }
@@ -486,8 +517,13 @@ QFontEngineQPF::~QFontEngineQPF()
         qt_fbdpy->sendFontCommand(QWSFontCommand::StoppedUsingFont, QFile::encodeName(fileName));
 #endif
     delete renderingFontEngine;
-    if (fontData)
-        munmap((void *)fontData, dataSize);
+    if (fontData) {
+        if (munmap((void *)fontData, dataSize) == -1) {
+#if defined(DEBUG_FONTENGINE)
+            qErrnoWarning(errno, "~QFontEngineQPF: Unable to munmap");
+#endif
+        }
+    }
     if (fd != -1)
         ::close(fd);
 #if !defined(QT_NO_FREETYPE)