Long live Qt!

5 files changed, 3003 insertions, 0 deletions

diff --git a/src/plugins/gfxdrivers/vnc/main.cpp b/src/plugins/gfxdrivers/vnc/main.cpp
new file mode 100644
index 0000000..fe10a67
--- /dev/null
+++ b/src/plugins/gfxdrivers/vnc/main.cpp
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the plugins 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 <qscreendriverplugin_qws.h>
+#include <qscreenvnc_qws.h>
+#include <qstringlist.h>
+
+QT_BEGIN_NAMESPACE
+
+class GfxVncDriver : public QScreenDriverPlugin
+{
+public:
+    GfxVncDriver();
+
+    QStringList keys() const;
+    QScreen *create(const QString&, int displayId);
+};
+
+GfxVncDriver::GfxVncDriver()
+: QScreenDriverPlugin()
+{
+}
+
+QStringList GfxVncDriver::keys() const
+{
+    QStringList list;
+    list << "VNC";
+    return list;
+}
+
+QScreen* GfxVncDriver::create(const QString& driver, int displayId)
+{
+    if (driver.toLower() == "vnc")
+        return new QVNCScreen(displayId);
+
+    return 0;
+}
+
+Q_EXPORT_STATIC_PLUGIN(GfxVncDriver)
+Q_EXPORT_PLUGIN2(qgfxvnc, GfxVncDriver)
+
+QT_END_NAMESPACE
diff --git a/src/plugins/gfxdrivers/vnc/qscreenvnc_p.h b/src/plugins/gfxdrivers/vnc/qscreenvnc_p.h
new file mode 100644
index 0000000..6b2b315
--- /dev/null
+++ b/src/plugins/gfxdrivers/vnc/qscreenvnc_p.h
@@ -0,0 +1,522 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the plugins 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCREENVNC_P_H
+#define QSCREENVNC_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from version to version
+// without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscreenvnc_qws.h"
+
+#ifndef QT_NO_QWS_VNC
+
+#include <QtCore/qvarlengtharray.h>
+#include <QtCore/qsharedmemory.h>
+#include <QtNetwork/qtcpsocket.h>
+#include <QtNetwork/qtcpserver.h>
+
+QT_BEGIN_NAMESPACE
+
+class QVNCServer;
+
+#ifndef QT_NO_QWS_CURSOR
+class QVNCCursor : public QProxyScreenCursor
+{
+public:
+    QVNCCursor(QVNCScreen *s);
+    ~QVNCCursor();
+
+    void hide();
+    void show();
+    void set(const QImage &image, int hotx, int hoty);
+    void move(int x, int y);
+
+private:
+    void setDirty(const QRect &r) const;
+    QVNCScreen *screen;
+};
+
+class QVNCClientCursor : public QProxyScreenCursor
+{
+public:
+    QVNCClientCursor(QVNCServer *s);
+    ~QVNCClientCursor();
+
+    void set(const QImage &image, int hotx, int hoty);
+    void write() const;
+
+private:
+    QVNCServer *server;
+};
+#endif // QT_NO_QWS_CURSOR
+
+#define MAP_TILE_SIZE 16
+#define MAP_WIDTH 1280 / MAP_TILE_SIZE
+#define MAP_HEIGHT 1024 / MAP_TILE_SIZE
+
+class QVNCDirtyMap
+{
+public:
+    QVNCDirtyMap(QScreen *screen);
+    virtual ~QVNCDirtyMap();
+
+    void reset();
+    bool dirty(int x, int y) const;
+    virtual void setDirty(int x, int y, bool force = false) = 0;
+    void setClean(int x, int y);
+
+    int bytesPerPixel;
+
+    int numDirty;
+    int mapWidth;
+    int mapHeight;
+
+protected:
+    uchar *map;
+    QScreen *screen;
+    uchar *buffer;
+    int bufferWidth;
+    int bufferHeight;
+    int bufferStride;
+    int numTiles;
+};
+
+template <class T>
+class QVNCDirtyMapOptimized : public QVNCDirtyMap
+{
+public:
+    QVNCDirtyMapOptimized(QScreen *screen) : QVNCDirtyMap(screen) {}
+    ~QVNCDirtyMapOptimized() {}
+
+    void setDirty(int x, int y, bool force = false);
+};
+
+class QRfbRect
+{
+public:
+    QRfbRect() {}
+    QRfbRect(quint16 _x, quint16 _y, quint16 _w, quint16 _h) {
+        x = _x; y = _y; w = _w; h = _h;
+    }
+
+    void read(QTcpSocket *s);
+    void write(QTcpSocket *s) const;
+
+    quint16 x;
+    quint16 y;
+    quint16 w;
+    quint16 h;
+};
+
+class QRfbPixelFormat
+{
+public:
+    static int size() { return 16; }
+
+    void read(QTcpSocket *s);
+    void write(QTcpSocket *s);
+
+    int bitsPerPixel;
+    int depth;
+    bool bigEndian;
+    bool trueColor;
+    int redBits;
+    int greenBits;
+    int blueBits;
+    int redShift;
+    int greenShift;
+    int blueShift;
+};
+
+class QRfbServerInit
+{
+public:
+    QRfbServerInit() { name = 0; }
+    ~QRfbServerInit() { delete[] name; }
+
+    int size() const { return QRfbPixelFormat::size() + 8 + strlen(name); }
+    void setName(const char *n);
+
+    void read(QTcpSocket *s);
+    void write(QTcpSocket *s);
+
+    quint16 width;
+    quint16 height;
+    QRfbPixelFormat format;
+    char *name;
+};
+
+class QRfbSetEncodings
+{
+public:
+    bool read(QTcpSocket *s);
+
+    quint16 count;
+};
+
+class QRfbFrameBufferUpdateRequest
+{
+public:
+    bool read(QTcpSocket *s);
+
+    char incremental;
+    QRfbRect rect;
+};
+
+class QRfbKeyEvent
+{
+public:
+    bool read(QTcpSocket *s);
+
+    char down;
+    int  keycode;
+    int  unicode;
+};
+
+class QRfbPointerEvent
+{
+public:
+    bool read(QTcpSocket *s);
+
+    uint buttons;
+    quint16 x;
+    quint16 y;
+};
+
+class QRfbClientCutText
+{
+public:
+    bool read(QTcpSocket *s);
+
+    quint32 length;
+};
+
+class QVNCScreenPrivate : public QObject
+{
+public:
+    QVNCScreenPrivate(QVNCScreen *parent);
+    ~QVNCScreenPrivate();
+
+    void setDirty(const QRect &rect, bool force = false);
+    void configure();
+
+    qreal dpiX;
+    qreal dpiY;
+    bool doOnScreenSurface;
+    QVNCDirtyMap *dirty;
+    int refreshRate;
+    QVNCServer *vncServer;
+
+#if !defined(QT_NO_QWS_MULTIPROCESS) && !defined(QT_NO_SHAREDMEMORY)
+    QSharedMemory shm;
+#endif
+
+    QVNCScreen *q_ptr;
+};
+
+class QRfbEncoder
+{
+public:
+    QRfbEncoder(QVNCServer *s) : server(s) {}
+    virtual ~QRfbEncoder() {}
+
+    virtual void write() = 0;
+
+protected:
+    QVNCServer *server;
+};
+
+class QRfbRawEncoder : public QRfbEncoder
+{
+public:
+    QRfbRawEncoder(QVNCServer *s) : QRfbEncoder(s) {}
+
+    void write();
+
+private:
+    QByteArray buffer;
+};
+
+template <class SRC> class QRfbHextileEncoder;
+
+template <class SRC>
+class QRfbSingleColorHextile
+{
+public:
+    QRfbSingleColorHextile(QRfbHextileEncoder<SRC> *e) : encoder(e) {}
+    bool read(const uchar *data, int width, int height, int stride);
+    void write(QTcpSocket *socket) const;
+
+private:
+    QRfbHextileEncoder<SRC> *encoder;
+};
+
+template <class SRC>
+class QRfbDualColorHextile
+{
+public:
+    QRfbDualColorHextile(QRfbHextileEncoder<SRC> *e) : encoder(e) {}
+    bool read(const uchar *data, int width, int height, int stride);
+    void write(QTcpSocket *socket) const;
+
+private:
+    struct Rect {
+        quint8 xy;
+        quint8 wh;
+    } Q_PACKED rects[8 * 16];
+
+    quint8 numRects;
+    QRfbHextileEncoder<SRC> *encoder;
+
+private:
+    inline int lastx() const { return rectx(numRects); }
+    inline int lasty() const { return recty(numRects); }
+    inline int rectx(int r) const { return rects[r].xy >> 4; }
+    inline int recty(int r) const { return rects[r].xy & 0x0f; }
+    inline int width(int r) const { return (rects[r].wh >> 4) + 1; }
+    inline int height(int r) const { return (rects[r].wh & 0x0f) + 1; }
+
+    inline void setX(int r, int x) {
+        rects[r].xy = (x << 4) | (rects[r].xy & 0x0f);
+    }
+    inline void setY(int r, int y) {
+        rects[r].xy = (rects[r].xy & 0xf0) | y;
+    }
+    inline void setWidth(int r, int width) {
+        rects[r].wh = ((width - 1) << 4) | (rects[r].wh & 0x0f);
+    }
+    inline void setHeight(int r, int height) {
+        rects[r].wh = (rects[r].wh & 0xf0) | (height - 1);
+    }
+
+    inline void setWidth(int width) { setWidth(numRects, width); }
+    inline void setHeight(int height) { setHeight(numRects, height); }
+    inline void setX(int x) { setX(numRects, x); }
+    inline void setY(int y) { setY(numRects, y); }
+    void next();
+};
+
+template <class SRC>
+class QRfbMultiColorHextile
+{
+public:
+    QRfbMultiColorHextile(QRfbHextileEncoder<SRC> *e) : encoder(e) {}
+    bool read(const uchar *data, int width, int height, int stride);
+    void write(QTcpSocket *socket) const;
+
+private:
+    inline quint8* rect(int r) {
+        return rects.data() + r * (bpp + 2);
+    }
+    inline const quint8* rect(int r) const {
+        return rects.constData() + r * (bpp + 2);
+    }
+    inline void setX(int r, int x) {
+        quint8 *ptr = rect(r) + bpp;
+        *ptr = (x << 4) | (*ptr & 0x0f);
+    }
+    inline void setY(int r, int y) {
+        quint8 *ptr = rect(r) + bpp;
+        *ptr = (*ptr & 0xf0) | y;
+    }
+    void setColor(SRC color);
+    inline int rectx(int r) const {
+        const quint8 *ptr = rect(r) + bpp;
+        return *ptr >> 4;
+    }
+    inline int recty(int r) const {
+        const quint8 *ptr = rect(r) + bpp;
+        return *ptr & 0x0f;
+    }
+    inline void setWidth(int r, int width) {
+        quint8 *ptr = rect(r) + bpp + 1;
+        *ptr = ((width - 1) << 4) | (*ptr & 0x0f);
+    }
+    inline void setHeight(int r, int height) {
+        quint8 *ptr = rect(r) + bpp + 1;
+        *ptr = (*ptr & 0xf0) | (height - 1);
+    }
+
+    bool beginRect();
+    void endRect();
+
+    static const int maxRectsSize = 16 * 16;
+    QVarLengthArray<quint8, maxRectsSize> rects;
+
+    quint8 bpp;
+    quint8 numRects;
+    QRfbHextileEncoder<SRC> *encoder;
+};
+
+template <class SRC>
+class QRfbHextileEncoder : public QRfbEncoder
+{
+public:
+    QRfbHextileEncoder(QVNCServer *s);
+    void write();
+
+private:
+    enum SubEncoding {
+        Raw = 1,
+        BackgroundSpecified = 2,
+        ForegroundSpecified = 4,
+        AnySubrects = 8,
+        SubrectsColoured = 16
+    };
+
+    QByteArray buffer;
+    QRfbSingleColorHextile<SRC> singleColorHextile;
+    QRfbDualColorHextile<SRC> dualColorHextile;
+    QRfbMultiColorHextile<SRC> multiColorHextile;
+
+    SRC bg;
+    SRC fg;
+    bool newBg;
+    bool newFg;
+
+    friend class QRfbSingleColorHextile<SRC>;
+    friend class QRfbDualColorHextile<SRC>;
+    friend class QRfbMultiColorHextile<SRC>;
+};
+
+class QVNCServer : public QObject
+{
+    Q_OBJECT
+public:
+    QVNCServer(QVNCScreen *screen);
+    QVNCServer(QVNCScreen *screen, int id);
+    ~QVNCServer();
+
+    void setDirty();
+    void setDirtyCursor() { dirtyCursor = true; setDirty(); }
+    inline bool isConnected() const { return state == Connected; }
+    inline void setRefreshRate(int rate) { refreshRate = rate; }
+
+    enum ClientMsg { SetPixelFormat = 0,
+                     FixColourMapEntries = 1,
+                     SetEncodings = 2,
+                     FramebufferUpdateRequest = 3,
+                     KeyEvent = 4,
+                     PointerEvent = 5,
+                     ClientCutText = 6 };
+
+    enum ServerMsg { FramebufferUpdate = 0,
+                     SetColourMapEntries = 1 };
+
+    void convertPixels(char *dst, const char *src, int count) const;
+
+    inline int clientBytesPerPixel() const {
+        return pixelFormat.bitsPerPixel / 8;
+    }
+
+    inline QVNCScreen* screen() const { return qvnc_screen; }
+    inline QVNCDirtyMap* dirtyMap() const { return qvnc_screen->d_ptr->dirty; }
+    inline QTcpSocket* clientSocket() const { return client; }
+    QImage screenImage() const;
+    inline bool doPixelConversion() const { return needConversion; }
+#ifndef QT_NO_QWS_CURSOR
+    inline bool hasClientCursor() const { return qvnc_cursor != 0; }
+#endif
+
+private:
+    void setPixelFormat();
+    void setEncodings();
+    void frameBufferUpdateRequest();
+    void pointerEvent();
+    void keyEvent();
+    void clientCutText();
+    bool pixelConversionNeeded() const;
+
+private slots:
+    void newConnection();
+    void readClient();
+    void checkUpdate();
+    void discardClient();
+
+private:
+    void init(uint port);
+    enum ClientState { Unconnected, Protocol, Init, Connected };
+    QTimer *timer;
+    QTcpServer *serverSocket;
+    QTcpSocket *client;
+    ClientState state;
+    quint8 msgType;
+    bool handleMsg;
+    QRfbPixelFormat pixelFormat;
+    Qt::KeyboardModifiers keymod;
+    int encodingsPending;
+    int cutTextPending;
+    uint supportCopyRect : 1;
+    uint supportRRE : 1;
+    uint supportCoRRE : 1;
+    uint supportHextile : 1;
+    uint supportZRLE : 1;
+    uint supportCursor : 1;
+    uint supportDesktopSize : 1;
+    bool wantUpdate;
+    bool sameEndian;
+    bool needConversion;
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+    bool swapBytes;
+#endif
+    bool dirtyCursor;
+    int refreshRate;
+    QVNCScreen *qvnc_screen;
+#ifndef QT_NO_QWS_CURSOR
+    QVNCClientCursor *qvnc_cursor;
+#endif
+
+    QRfbEncoder *encoder;
+};
+
+
+QT_END_NAMESPACE
+#endif // QT_NO_QWS_VNC
+#endif // QSCREENVNC_P_H
diff --git a/src/plugins/gfxdrivers/vnc/qscreenvnc_qws.cpp b/src/plugins/gfxdrivers/vnc/qscreenvnc_qws.cpp
new file mode 100644
index 0000000..b7f03ba
--- /dev/null
+++ b/src/plugins/gfxdrivers/vnc/qscreenvnc_qws.cpp
@@ -0,0 +1,2297 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the plugins 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 "qscreenvnc_qws.h"
+
+#ifndef QT_NO_QWS_VNC
+
+#include "qscreenvnc_p.h"
+#include "qwindowsystem_qws.h"
+#include "qwsdisplay_qws.h"
+#include "qscreendriverfactory_qws.h"
+#include <QtCore/qtimer.h>
+#include <QtCore/qregexp.h>
+#include <QtGui/qwidget.h>
+#include <QtGui/qpolygon.h>
+#include <QtGui/qpainter.h>
+#include <qdebug.h>
+#include <private/qwindowsurface_qws_p.h>
+#include <private/qwssignalhandler_p.h>
+#include <private/qwidget_p.h>
+#include <private/qdrawhelper_p.h>
+
+#include <stdlib.h>
+
+QT_BEGIN_NAMESPACE
+
+//#define QT_QWS_VNC_DEBUG
+
+extern QString qws_qtePipeFilename();
+
+#ifndef QT_NO_QWS_CURSOR
+
+QVNCCursor::QVNCCursor(QVNCScreen *s)
+    : screen(s)
+{
+    if (qt_screencursor)
+        setScreenCursor(qt_screencursor);
+    else
+        hwaccel = true;
+}
+
+QVNCCursor::~QVNCCursor()
+{
+    if (screenCursor())
+        qt_screencursor = screenCursor();
+}
+
+void QVNCCursor::setDirty(const QRect &r) const
+{
+    screen->d_ptr->setDirty(r, true);
+}
+
+void QVNCCursor::hide()
+{
+    QProxyScreenCursor::hide();
+    if (enable)
+        setDirty(boundingRect());
+}
+
+void QVNCCursor::show()
+{
+    QProxyScreenCursor::show();
+    if (enable)
+        setDirty(boundingRect());
+}
+
+void QVNCCursor::set(const QImage &image, int hotx, int hoty)
+{
+    QRegion dirty = boundingRect();
+    QProxyScreenCursor::set(image, hotx, hoty);
+    dirty |= boundingRect();
+    if (enable && hwaccel && !screen->d_ptr->vncServer->hasClientCursor()) {
+        const QVector<QRect> rects = dirty.rects();
+        for (int i = 0; i < rects.size(); ++i)
+            setDirty(rects.at(i));
+    }
+}
+
+void QVNCCursor::move(int x, int y)
+{
+    if (enable && hwaccel && !screen->d_ptr->vncServer->hasClientCursor()) {
+        QRegion dirty = boundingRect();
+        QProxyScreenCursor::move(x, y);
+        dirty |= boundingRect();
+        if (enable) {
+            const QVector<QRect> rects = dirty.rects();
+            for (int i = 0; i < rects.size(); ++i)
+                setDirty(rects.at(i));
+        }
+    } else {
+        QProxyScreenCursor::move(x, y);
+    }
+}
+
+QVNCClientCursor::QVNCClientCursor(QVNCServer *s)
+    : server(s)
+{
+    setScreenCursor(qt_screencursor);
+    Q_ASSERT(hwaccel);
+    qt_screencursor = this; // hw: XXX
+
+    set(image(), hotspot.x(), hotspot.y());
+}
+
+QVNCClientCursor::~QVNCClientCursor()
+{
+    qt_screencursor = screenCursor();
+}
+
+void QVNCClientCursor::set(const QImage &image, int hotx, int hoty)
+{
+    QScreenCursor::set(image, hotx, hoty);
+    server->setDirtyCursor();
+}
+
+void QVNCClientCursor::write() const
+{
+    QTcpSocket *socket = server->clientSocket();
+
+    // FramebufferUpdate header
+    {
+        const quint16 tmp[6] = { htons(0),
+                                 htons(1),
+                                 htons(hotspot.x()), htons(hotspot.y()),
+                                 htons(cursor.width()),
+                                 htons(cursor.height()) };
+        socket->write((char*)tmp, sizeof(tmp));
+
+        const quint32 encoding = htonl(-239);
+        socket->write((char*)(&encoding), sizeof(encoding));
+    }
+
+    if (cursor.isNull())
+        return;
+
+    // write pixels
+    Q_ASSERT(cursor.hasAlphaChannel());
+    const QImage img = cursor.convertToFormat(server->screen()->pixelFormat());
+    const int n = server->clientBytesPerPixel() * img.width();
+    char *buffer = new char[n];
+    for (int i = 0; i < img.height(); ++i) {
+        server->convertPixels(buffer, (const char*)img.scanLine(i), img.width());
+        socket->write(buffer, n);
+    }
+    delete[] buffer;
+
+    // write mask
+    const QImage bitmap = cursor.createAlphaMask().convertToFormat(QImage::Format_Mono);
+    Q_ASSERT(bitmap.depth() == 1);
+    Q_ASSERT(bitmap.size() == img.size());
+    const int width = (bitmap.width() + 7) / 8;
+    for (int i = 0; i < bitmap.height(); ++i)
+        socket->write((const char*)bitmap.scanLine(i), width);
+}
+
+#endif // QT_NO_QWS_CURSOR
+
+QVNCScreenPrivate::QVNCScreenPrivate(QVNCScreen *parent)
+    : dpiX(72), dpiY(72), doOnScreenSurface(false), refreshRate(25),
+      vncServer(0), q_ptr(parent)
+{
+#ifndef QT_NO_QWS_SIGNALHANDLER
+    QWSSignalHandler::instance()->addObject(this);
+#endif
+}
+
+QVNCScreenPrivate::~QVNCScreenPrivate()
+{
+#if defined(QT_NO_QWS_MULTIPROCESS) || defined(QT_NO_SHAREDMEMORY)
+    if (q_ptr->screen())
+        return;
+
+    delete[] q_ptr->data;
+    q_ptr->data = 0;
+#else
+    shm.detach();
+#endif
+}
+
+void QVNCScreenPrivate::configure()
+{
+    if (q_ptr->screen())
+        return;
+
+    q_ptr->lstep = q_ptr->dw * ((q_ptr->d + 7) / 8);
+    q_ptr->size = q_ptr->h * q_ptr->lstep;
+    q_ptr->mapsize = q_ptr->size;
+    q_ptr->physWidth = qRound(q_ptr->dw * qreal(25.4) / dpiX);
+    q_ptr->physHeight = qRound(q_ptr->dh * qreal(25.4) / dpiY);
+
+    switch (q_ptr->d) {
+    case 1:
+        q_ptr->setPixelFormat(QImage::Format_Mono); //### LSB???
+        break;
+    case 8:
+        q_ptr->setPixelFormat(QImage::Format_Indexed8);
+        break;
+    case 12:
+        q_ptr->setPixelFormat(QImage::Format_RGB444);
+        break;
+    case 15:
+        q_ptr->setPixelFormat(QImage::Format_RGB555);
+        break;
+    case 16:
+        q_ptr->setPixelFormat(QImage::Format_RGB16);
+        break;
+    case 18:
+        q_ptr->setPixelFormat(QImage::Format_RGB666);
+        break;
+    case 24:
+        q_ptr->setPixelFormat(QImage::Format_RGB888);
+        break;
+    case 32:
+        q_ptr->setPixelFormat(QImage::Format_ARGB32_Premultiplied);
+        break;
+    }
+
+#if !defined(QT_NO_QWS_MULTIPROCESS) && !defined(QT_NO_SHAREDMEMORY)
+    if (q_ptr->size != shm.size()) {
+        shm.detach();
+        const QString key = qws_qtePipeFilename() +
+                            QString().sprintf("_vnc_%d_%d",
+                                              q_ptr->displayId, q_ptr->size);
+        shm.setKey(key);
+        if (QApplication::type() == QApplication::GuiServer) {
+            if (!shm.create(q_ptr->size)) {
+                qWarning() << "QVNCScreen could not create shared memory:"
+                           << shm.errorString();
+                if (!shm.attach()) {
+                    qWarning() << "QVNCScreen could not attach to shared memory:"
+                               << shm.errorString();
+                }
+            }
+        } else if (!shm.attach()) {
+            qWarning() << "QVNCScreen could not attach to shared memory:"
+                       << shm.errorString();
+        }
+        q_ptr->data = reinterpret_cast<uchar*>(shm.data());
+    }
+#else
+    if (q_ptr->data)
+        delete[] q_ptr->data;
+    q_ptr->data = new uchar[q_ptr->size];
+#endif
+}
+
+//===========================================================================
+
+static const struct {
+    int keysym;
+    int keycode;
+} keyMap[] = {
+    { 0xff08, Qt::Key_Backspace },
+    { 0xff09, Qt::Key_Tab       },
+    { 0xff0d, Qt::Key_Return    },
+    { 0xff1b, Qt::Key_Escape    },
+    { 0xff63, Qt::Key_Insert    },
+    { 0xffff, Qt::Key_Delete    },
+    { 0xff50, Qt::Key_Home      },
+    { 0xff57, Qt::Key_End       },
+    { 0xff55, Qt::Key_PageUp    },
+    { 0xff56, Qt::Key_PageDown  },
+    { 0xff51, Qt::Key_Left      },
+    { 0xff52, Qt::Key_Up        },
+    { 0xff53, Qt::Key_Right     },
+    { 0xff54, Qt::Key_Down      },
+    { 0xffbe, Qt::Key_F1        },
+    { 0xffbf, Qt::Key_F2        },
+    { 0xffc0, Qt::Key_F3        },
+    { 0xffc1, Qt::Key_F4        },
+    { 0xffc2, Qt::Key_F5        },
+    { 0xffc3, Qt::Key_F6        },
+    { 0xffc4, Qt::Key_F7        },
+    { 0xffc5, Qt::Key_F8        },
+    { 0xffc6, Qt::Key_F9        },
+    { 0xffc7, Qt::Key_F10       },
+    { 0xffc8, Qt::Key_F11       },
+    { 0xffc9, Qt::Key_F12       },
+    { 0xffe1, Qt::Key_Shift     },
+    { 0xffe2, Qt::Key_Shift     },
+    { 0xffe3, Qt::Key_Control   },
+    { 0xffe4, Qt::Key_Control   },
+    { 0xffe7, Qt::Key_Meta      },
+    { 0xffe8, Qt::Key_Meta      },
+    { 0xffe9, Qt::Key_Alt       },
+    { 0xffea, Qt::Key_Alt       },
+    { 0, 0 }
+};
+
+void QRfbRect::read(QTcpSocket *s)
+{
+    quint16 buf[4];
+    s->read((char*)buf, 8);
+    x = ntohs(buf[0]);
+    y = ntohs(buf[1]);
+    w = ntohs(buf[2]);
+    h = ntohs(buf[3]);
+}
+
+void QRfbRect::write(QTcpSocket *s) const
+{
+    quint16 buf[4];
+    buf[0] = htons(x);
+    buf[1] = htons(y);
+    buf[2] = htons(w);
+    buf[3] = htons(h);
+    s->write((char*)buf, 8);
+}
+
+void QRfbPixelFormat::read(QTcpSocket *s)
+{
+    char buf[16];
+    s->read(buf, 16);
+    bitsPerPixel = buf[0];
+    depth = buf[1];
+    bigEndian = buf[2];
+    trueColor = buf[3];
+
+    quint16 a = ntohs(*(quint16 *)(buf + 4));
+    redBits = 0;
+    while (a) { a >>= 1; redBits++; }
+
+    a = ntohs(*(quint16 *)(buf + 6));
+    greenBits = 0;
+    while (a) { a >>= 1; greenBits++; }
+
+    a = ntohs(*(quint16 *)(buf + 8));
+    blueBits = 0;
+    while (a) { a >>= 1; blueBits++; }
+
+    redShift = buf[10];
+    greenShift = buf[11];
+    blueShift = buf[12];
+}
+
+void QRfbPixelFormat::write(QTcpSocket *s)
+{
+    char buf[16];
+    buf[0] = bitsPerPixel;
+    buf[1] = depth;
+    buf[2] = bigEndian;
+    buf[3] = trueColor;
+
+    quint16 a = 0;
+    for (int i = 0; i < redBits; i++) a = (a << 1) | 1;
+    *(quint16 *)(buf + 4) = htons(a);
+
+    a = 0;
+    for (int i = 0; i < greenBits; i++) a = (a << 1) | 1;
+    *(quint16 *)(buf + 6) = htons(a);
+
+    a = 0;
+    for (int i = 0; i < blueBits; i++) a = (a << 1) | 1;
+    *(quint16 *)(buf + 8) = htons(a);
+
+    buf[10] = redShift;
+    buf[11] = greenShift;
+    buf[12] = blueShift;
+    s->write(buf, 16);
+}
+
+
+void QRfbServerInit::setName(const char *n)
+{
+    delete[] name;
+    name = new char [strlen(n) + 1];
+    strcpy(name, n);
+}
+
+void QRfbServerInit::read(QTcpSocket *s)
+{
+    s->read((char *)&width, 2);
+    width = ntohs(width);
+    s->read((char *)&height, 2);
+    height = ntohs(height);
+    format.read(s);
+
+    quint32 len;
+    s->read((char *)&len, 4);
+    len = ntohl(len);
+
+    name = new char [len + 1];
+    s->read(name, len);
+    name[len] = '\0';
+}
+
+void QRfbServerInit::write(QTcpSocket *s)
+{
+    quint16 t = htons(width);
+    s->write((char *)&t, 2);
+    t = htons(height);
+    s->write((char *)&t, 2);
+    format.write(s);
+    quint32 len = strlen(name);
+    len = htonl(len);
+    s->write((char *)&len, 4);
+    s->write(name, strlen(name));
+}
+
+bool QRfbSetEncodings::read(QTcpSocket *s)
+{
+    if (s->bytesAvailable() < 3)
+        return false;
+
+    char tmp;
+    s->read(&tmp, 1);        // padding
+    s->read((char *)&count, 2);
+    count = ntohs(count);
+
+    return true;
+}
+
+bool QRfbFrameBufferUpdateRequest::read(QTcpSocket *s)
+{
+    if (s->bytesAvailable() < 9)
+        return false;
+
+    s->read(&incremental, 1);
+    rect.read(s);
+
+    return true;
+}
+
+bool QRfbKeyEvent::read(QTcpSocket *s)
+{
+    if (s->bytesAvailable() < 7)
+        return false;
+
+    s->read(&down, 1);
+    quint16 tmp;
+    s->read((char *)&tmp, 2);  // padding
+
+    quint32 key;
+    s->read((char *)&key, 4);
+    key = ntohl(key);
+
+    unicode = 0;
+    keycode = 0;
+    int i = 0;
+    while (keyMap[i].keysym && !keycode) {
+        if (keyMap[i].keysym == (int)key)
+            keycode = keyMap[i].keycode;
+        i++;
+    }
+    if (!keycode) {
+        if (key <= 0xff) {
+            unicode = key;
+            if (key >= 'a' && key <= 'z')
+                keycode = Qt::Key_A + key - 'a';
+            else if (key >= ' ' && key <= '~')
+                keycode = Qt::Key_Space + key - ' ';
+        }
+    }
+
+    return true;
+}
+
+bool QRfbPointerEvent::read(QTcpSocket *s)
+{
+    if (s->bytesAvailable() < 5)
+        return false;
+
+    char buttonMask;
+    s->read(&buttonMask, 1);
+    buttons = 0;
+    if (buttonMask & 1)
+        buttons |= Qt::LeftButton;
+    if (buttonMask & 2)
+        buttons |= Qt::MidButton;
+    if (buttonMask & 4)
+        buttons |= Qt::RightButton;
+
+    quint16 tmp;
+    s->read((char *)&tmp, 2);
+    x = ntohs(tmp);
+    s->read((char *)&tmp, 2);
+    y = ntohs(tmp);
+
+    return true;
+}
+
+bool QRfbClientCutText::read(QTcpSocket *s)
+{
+    if (s->bytesAvailable() < 7)
+        return false;
+
+    char tmp[3];
+    s->read(tmp, 3);        // padding
+    s->read((char *)&length, 4);
+    length = ntohl(length);
+
+    return true;
+}
+
+//===========================================================================
+
+QVNCServer::QVNCServer(QVNCScreen *screen)
+    : qvnc_screen(screen)
+{
+    init(5900);
+}
+
+QVNCServer::QVNCServer(QVNCScreen *screen, int id)
+    : qvnc_screen(screen)
+{
+    init(5900 + id);
+}
+
+void QVNCServer::init(uint port)
+{
+    handleMsg = false;
+    client = 0;
+    encodingsPending = 0;
+    cutTextPending = 0;
+    keymod = 0;
+    state = Unconnected;
+    dirtyCursor = false;
+
+    refreshRate = 25;
+    timer = new QTimer(this);
+    timer->setSingleShot(true);
+    connect(timer, SIGNAL(timeout()), this, SLOT(checkUpdate()));
+
+    serverSocket = new QTcpServer(this);
+    if (!serverSocket->listen(QHostAddress::Any, port))
+        qDebug() << "QVNCServer could not connect:" << serverSocket->errorString();
+    else
+        qDebug("QVNCServer created on port %d", port);
+
+    connect(serverSocket, SIGNAL(newConnection()), this, SLOT(newConnection()));
+
+#ifndef QT_NO_QWS_CURSOR
+    qvnc_cursor = 0;
+#endif
+    encoder = 0;
+}
+
+QVNCServer::~QVNCServer()
+{
+    delete encoder;
+    encoder = 0;
+    delete client;
+    client = 0;
+#ifndef QT_NO_QWS_CURSOR
+    delete qvnc_cursor;
+    qvnc_cursor = 0;
+#endif
+}
+
+void QVNCServer::setDirty()
+{
+    if (state == Connected && !timer->isActive() &&
+        ((dirtyMap()->numDirty > 0) || dirtyCursor)) {
+        timer->start();
+    }
+}
+
+void QVNCServer::newConnection()
+{
+    if (client)
+        delete client;
+
+    client = serverSocket->nextPendingConnection();
+    connect(client,SIGNAL(readyRead()),this,SLOT(readClient()));
+    connect(client,SIGNAL(disconnected()),this,SLOT(discardClient()));
+    handleMsg = false;
+    encodingsPending = 0;
+    cutTextPending = 0;
+    supportHextile = false;
+    wantUpdate = false;
+
+    timer->start(1000 / refreshRate);
+    dirtyMap()->reset();
+
+    // send protocol version
+    const char *proto = "RFB 003.003\n";
+    client->write(proto, 12);
+    state = Protocol;
+
+    if (!qvnc_screen->screen())
+        QWSServer::instance()->enablePainting(true);
+}
+
+void QVNCServer::readClient()
+{
+    switch (state) {
+        case Protocol:
+            if (client->bytesAvailable() >= 12) {
+                char proto[13];
+                client->read(proto, 12);
+                proto[12] = '\0';
+                qDebug("Client protocol version %s", proto);
+                // No authentication
+                quint32 auth = htonl(1);
+                client->write((char *) &auth, sizeof(auth));
+                state = Init;
+            }
+            break;
+
+        case Init:
+            if (client->bytesAvailable() >= 1) {
+                quint8 shared;
+                client->read((char *) &shared, 1);
+
+                // Server Init msg
+                QRfbServerInit sim;
+                QRfbPixelFormat &format = sim.format;
+                switch (qvnc_screen->depth()) {
+                case 32:
+                    format.bitsPerPixel = 32;
+                    format.depth = 32;
+                    format.bigEndian = 0;
+                    format.trueColor = true;
+                    format.redBits = 8;
+                    format.greenBits = 8;
+                    format.blueBits = 8;
+                    format.redShift = 16;
+                    format.greenShift = 8;
+                    format.blueShift = 0;
+                    break;
+
+                case 24:
+                    format.bitsPerPixel = 24;
+                    format.depth = 24;
+                    format.bigEndian = 0;
+                    format.trueColor = true;
+                    format.redBits = 8;
+                    format.greenBits = 8;
+                    format.blueBits = 8;
+                    format.redShift = 16;
+                    format.greenShift = 8;
+                    format.blueShift = 0;
+                    break;
+
+                case 18:
+                    format.bitsPerPixel = 24;
+                    format.depth = 18;
+                    format.bigEndian = 0;
+                    format.trueColor = true;
+                    format.redBits = 6;
+                    format.greenBits = 6;
+                    format.blueBits = 6;
+                    format.redShift = 12;
+                    format.greenShift = 6;
+                    format.blueShift = 0;
+                    break;
+
+                case 16:
+                    format.bitsPerPixel = 16;
+                    format.depth = 16;
+                    format.bigEndian = 0;
+                    format.trueColor = true;
+                    format.redBits = 5;
+                    format.greenBits = 6;
+                    format.blueBits = 5;
+                    format.redShift = 11;
+                    format.greenShift = 5;
+                    format.blueShift = 0;
+                    break;
+
+                case 15:
+                    format.bitsPerPixel = 16;
+                    format.depth = 15;
+                    format.bigEndian = 0;
+                    format.trueColor = true;
+                    format.redBits = 5;
+                    format.greenBits = 5;
+                    format.blueBits = 5;
+                    format.redShift = 10;
+                    format.greenShift = 5;
+                    format.blueShift = 0;
+                    break;
+
+                case 12:
+                    format.bitsPerPixel = 16;
+                    format.depth = 12;
+                    format.bigEndian = 0;
+                    format.trueColor = true;
+                    format.redBits = 4;
+                    format.greenBits = 4;
+                    format.blueBits = 4;
+                    format.redShift = 8;
+                    format.greenShift = 4;
+                    format.blueShift = 0;
+                    break;
+
+                case 8:
+                case 4:
+                    format.bitsPerPixel = 8;
+                    format.depth = 8;
+                    format.bigEndian = 0;
+                    format.trueColor = false;
+                    format.redBits = 0;
+                    format.greenBits = 0;
+                    format.blueBits = 0;
+                    format.redShift = 0;
+                    format.greenShift = 0;
+                    format.blueShift = 0;
+                    break;
+
+                default:
+                    qDebug("QVNC cannot drive depth %d", qvnc_screen->depth());
+                    discardClient();
+                    return;
+                }
+                sim.width = qvnc_screen->deviceWidth();
+                sim.height = qvnc_screen->deviceHeight();
+                sim.setName("Qt for Embedded Linux VNC Server");
+                sim.write(client);
+                state = Connected;
+            }
+            break;
+
+        case Connected:
+            do {
+                if (!handleMsg) {
+                    client->read((char *)&msgType, 1);
+                    handleMsg = true;
+                }
+                if (handleMsg) {
+                    switch (msgType ) {
+                    case SetPixelFormat:
+                        setPixelFormat();
+                        break;
+                    case FixColourMapEntries:
+                        qDebug("Not supported: FixColourMapEntries");
+                        handleMsg = false;
+                        break;
+                    case SetEncodings:
+                        setEncodings();
+                        break;
+                    case FramebufferUpdateRequest:
+                        frameBufferUpdateRequest();
+                        break;
+                    case KeyEvent:
+                        keyEvent();
+                        break;
+                    case PointerEvent:
+                        pointerEvent();
+                        break;
+                    case ClientCutText:
+                        clientCutText();
+                        break;
+                    default:
+                        qDebug("Unknown message type: %d", (int)msgType);
+                        handleMsg = false;
+                    }
+                }
+            } while (!handleMsg && client->bytesAvailable());
+            break;
+    default:
+        break;
+    }
+}
+
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+bool QVNCScreen::swapBytes() const
+{
+    if (depth() != 16)
+        return false;
+
+    if (screen())
+        return screen()->frameBufferLittleEndian();
+    return frameBufferLittleEndian();
+}
+#endif
+
+void QVNCServer::setPixelFormat()
+{
+    if (client->bytesAvailable() >= 19) {
+        char buf[3];
+        client->read(buf, 3); // just padding
+        pixelFormat.read(client);
+#ifdef QT_QWS_VNC_DEBUG
+        qDebug("Want format: %d %d %d %d %d %d %d %d %d %d",
+            int(pixelFormat.bitsPerPixel),
+            int(pixelFormat.depth),
+            int(pixelFormat.bigEndian),
+            int(pixelFormat.trueColor),
+            int(pixelFormat.redBits),
+            int(pixelFormat.greenBits),
+            int(pixelFormat.blueBits),
+            int(pixelFormat.redShift),
+            int(pixelFormat.greenShift),
+            int(pixelFormat.blueShift));
+#endif
+        if (!pixelFormat.trueColor) {
+            qDebug("Can only handle true color clients");
+            discardClient();
+        }
+        handleMsg = false;
+        sameEndian = (QSysInfo::ByteOrder == QSysInfo::BigEndian) == !!pixelFormat.bigEndian;
+        needConversion = pixelConversionNeeded();
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+        swapBytes = qvnc_screen->swapBytes();
+#endif
+    }
+}
+
+void QVNCServer::setEncodings()
+{
+    QRfbSetEncodings enc;
+
+    if (!encodingsPending && enc.read(client)) {
+        encodingsPending = enc.count;
+        if (!encodingsPending)
+            handleMsg = false;
+    }
+
+    if (encoder) {
+        delete encoder;
+        encoder = 0;
+    }
+
+    enum Encodings {
+        Raw = 0,
+        CopyRect = 1,
+        RRE = 2,
+        CoRRE = 4,
+        Hextile = 5,
+        ZRLE = 16,
+        Cursor = -239,
+        DesktopSize = -223
+    };
+
+    if (encodingsPending && (unsigned)client->bytesAvailable() >=
+                                encodingsPending * sizeof(quint32)) {
+        for (int i = 0; i < encodingsPending; ++i) {
+            qint32 enc;
+            client->read((char *)&enc, sizeof(qint32));
+            enc = ntohl(enc);
+#ifdef QT_QWS_VNC_DEBUG
+            qDebug("QVNCServer::setEncodings: %d", enc);
+#endif
+            switch (enc) {
+            case Raw:
+                if (!encoder) {
+                    encoder = new QRfbRawEncoder(this);
+#ifdef QT_QWS_VNC_DEBUG
+                    qDebug("QVNCServer::setEncodings: using raw");
+#endif
+                }
+               break;
+            case CopyRect:
+                supportCopyRect = true;
+                break;
+            case RRE:
+                supportRRE = true;
+                break;
+            case CoRRE:
+                supportCoRRE = true;
+                break;
+            case Hextile:
+                supportHextile = true;
+                if (encoder)
+                    break;
+                switch (qvnc_screen->depth()) {
+#ifdef QT_QWS_DEPTH_8
+                case 8:
+                    encoder = new QRfbHextileEncoder<quint8>(this);
+                    break;
+#endif
+#ifdef QT_QWS_DEPTH_12
+                case 12:
+                    encoder = new QRfbHextileEncoder<qrgb444>(this);
+                    break;
+#endif
+#ifdef QT_QWS_DEPTH_15
+                case 15:
+                    encoder = new QRfbHextileEncoder<qrgb555>(this);
+                    break;
+#endif
+#ifdef QT_QWS_DEPTH_16
+                case 16:
+                    encoder = new QRfbHextileEncoder<quint16>(this);
+                    break;
+#endif
+#ifdef QT_QWS_DEPTH_18
+                case 18:
+                    encoder = new QRfbHextileEncoder<qrgb666>(this);
+                    break;
+#endif
+#ifdef QT_QWS_DEPTH_24
+                case 24:
+                    encoder = new QRfbHextileEncoder<qrgb888>(this);
+                    break;
+#endif
+#ifdef QT_QWS_DEPTH_32
+                case 32:
+                    encoder = new QRfbHextileEncoder<quint32>(this);
+                    break;
+#endif
+                default:
+                    break;
+                }
+#ifdef QT_QWS_VNC_DEBUG
+                qDebug("QVNCServer::setEncodings: using hextile");
+#endif
+                break;
+            case ZRLE:
+                supportZRLE = true;
+                break;
+            case Cursor:
+                supportCursor = true;
+#ifndef QT_NO_QWS_CURSOR
+                if (!qvnc_screen->screen() || qt_screencursor->isAccelerated()) {
+                    delete qvnc_cursor;
+                    qvnc_cursor = new QVNCClientCursor(this);
+                }
+#endif
+                break;
+            case DesktopSize:
+                supportDesktopSize = true;
+                break;
+            default:
+                break;
+            }
+        }
+        handleMsg = false;
+        encodingsPending = 0;
+    }
+
+    if (!encoder) {
+        encoder = new QRfbRawEncoder(this);
+#ifdef QT_QWS_VNC_DEBUG
+        qDebug("QVNCServer::setEncodings: fallback using raw");
+#endif
+    }
+}
+
+void QVNCServer::frameBufferUpdateRequest()
+{
+    QRfbFrameBufferUpdateRequest ev;
+
+    if (ev.read(client)) {
+        if (!ev.incremental) {
+            QRect r(ev.rect.x, ev.rect.y, ev.rect.w, ev.rect.h);
+            r.translate(qvnc_screen->offset());
+            qvnc_screen->d_ptr->setDirty(r, true);
+        }
+        wantUpdate = true;
+        checkUpdate();
+        handleMsg = false;
+    }
+}
+
+void QVNCServer::pointerEvent()
+{
+    QRfbPointerEvent ev;
+    if (ev.read(client)) {
+        const QPoint offset = qvnc_screen->offset();
+        QWSServer::sendMouseEvent(offset + QPoint(ev.x, ev.y), ev.buttons);
+        handleMsg = false;
+    }
+}
+
+void QVNCServer::keyEvent()
+{
+    QRfbKeyEvent ev;
+
+    if (ev.read(client)) {
+        if (ev.keycode == Qt::Key_Shift)
+            keymod = ev.down ? keymod | Qt::ShiftModifier :
+                               keymod & ~Qt::ShiftModifier;
+        else if (ev.keycode == Qt::Key_Control)
+            keymod = ev.down ? keymod | Qt::ControlModifier :
+                               keymod & ~Qt::ControlModifier;
+        else if (ev.keycode == Qt::Key_Alt)
+            keymod = ev.down ? keymod | Qt::AltModifier :
+                               keymod & ~Qt::AltModifier;
+        if (ev.unicode || ev.keycode)
+            QWSServer::sendKeyEvent(ev.unicode, ev.keycode, keymod, ev.down, false);
+        handleMsg = false;
+    }
+}
+
+void QVNCServer::clientCutText()
+{
+    QRfbClientCutText ev;
+
+    if (ev.read(client)) {
+        cutTextPending = ev.length;
+        if (!cutTextPending)
+            handleMsg = false;
+    }
+
+    if (cutTextPending && client->bytesAvailable() >= cutTextPending) {
+        char *text = new char [cutTextPending+1];
+        client->read(text, cutTextPending);
+        delete [] text;
+        cutTextPending = 0;
+        handleMsg = false;
+    }
+}
+
+// stride in bytes
+template <class SRC>
+bool QRfbSingleColorHextile<SRC>::read(const uchar *data,
+                                       int width, int height, int stride)
+{
+    const int depth = encoder->server->screen()->depth();
+    if (width % (depth / 8)) // hw: should rather fallback to simple loop
+        return false;
+
+    static int alwaysFalse = qgetenv("QT_VNC_NOCHECKFILL").toInt();
+    if (alwaysFalse)
+        return false;
+
+    switch (depth) {
+    case 4: {
+        const quint8 *data8 = reinterpret_cast<const quint8*>(data);
+        if ((data8[0] & 0xf) != (data8[0] >> 4))
+            return false;
+        width /= 2;
+    } // fallthrough
+    case 8: {
+        const quint8 *data8 = reinterpret_cast<const quint8*>(data);
+        if (data8[0] != data8[1])
+            return false;
+        width /= 2;
+    } // fallthrough
+    case 12:
+    case 15:
+    case 16: {
+        const quint16 *data16 = reinterpret_cast<const quint16*>(data);
+        if (data16[0] != data16[1])
+            return false;
+        width /= 2;
+    } // fallthrough
+    case 18:
+    case 24:
+    case 32: {
+        const quint32 *data32 = reinterpret_cast<const quint32*>(data);
+        const quint32 first = data32[0];
+        const int linestep = (stride / sizeof(quint32)) - width;
+        for (int y = 0; y < height; ++y) {
+            for (int x = 0; x < width; ++x) {
+                if (*(data32++) != first)
+                    return false;
+            }
+            data32 += linestep;
+        }
+        break;
+    }
+    default:
+        return false;
+    }
+
+    SRC color = reinterpret_cast<const SRC*>(data)[0];
+    encoder->newBg |= (color != encoder->bg);
+    encoder->bg = color;
+    return true;
+}
+
+template <class SRC>
+void QRfbSingleColorHextile<SRC>::write(QTcpSocket *socket) const
+{
+    if (true || encoder->newBg) {
+        const int bpp = encoder->server->clientBytesPerPixel();
+        const int padding = 3;
+        QVarLengthArray<char> buffer(padding + 1 + bpp);
+        buffer[padding] = 2; // BackgroundSpecified
+        encoder->server->convertPixels(buffer.data() + padding + 1,
+                                       reinterpret_cast<char*>(&encoder->bg),
+                                       1);
+        socket->write(buffer.data() + padding, bpp + 1);
+//        encoder->newBg = false;
+    } else {
+        char subenc = 0;
+        socket->write(&subenc, 1);
+    }
+}
+
+template <class SRC>
+bool QRfbDualColorHextile<SRC>::read(const uchar *data,
+                                     int width, int height, int stride)
+{
+    const SRC *ptr = reinterpret_cast<const SRC*>(data);
+    const int linestep = (stride / sizeof(SRC)) - width;
+
+    SRC c1;
+    SRC c2 = 0;
+    int n1 = 0;
+    int n2 = 0;
+    int x = 0;
+    int y = 0;
+
+    c1 = *ptr;
+
+    // find second color
+    while (y < height) {
+        while (x < width) {
+            if (*ptr == c1) {
+                ++n1;
+            } else {
+                c2 = *ptr;
+                goto found_second_color;
+            }
+            ++ptr;
+            ++x;
+        }
+        x = 0;
+        ptr += linestep;
+        ++y;
+    }
+
+found_second_color:
+    // finish counting
+    while (y < height) {
+        while (x < width) {
+            if (*ptr == c1) {
+                ++n1;
+            } else if (*ptr == c2) {
+                ++n2;
+            } else {
+                return false;
+            }
+            ++ptr;
+            ++x;
+        }
+        x = 0;
+        ptr += linestep;
+        ++y;
+    }
+
+    if (n2 > n1) {
+        const quint32 tmpC = c1;
+        c1 = c2;
+        c2 = tmpC;
+    }
+
+    encoder->newBg |= (c1 != encoder->bg);
+    encoder->newFg |= (c2 != encoder->fg);
+
+    encoder->bg = c1;
+    encoder->fg = c2;
+
+    // create map
+    bool inRect = false;
+    numRects = 0;
+    ptr = reinterpret_cast<const SRC*>(data);
+    for (y = 0; y < height; ++y) {
+        for (x = 0; x < width; ++x) {
+            if (inRect && *ptr == encoder->bg) {
+                // rect finished
+                setWidth(x - lastx());
+                next();
+                inRect = false;
+            } else if (!inRect && *ptr == encoder->fg) {
+                // rect start
+                setX(x);
+                setY(y);
+                setHeight(1);
+                inRect = true;
+            }
+            ++ptr;
+        }
+        if (inRect) {
+            // finish rect
+            setWidth(width - lastx());
+            next();
+            inRect = false;
+        }
+        ptr += linestep;
+    }
+
+    return true;
+}
+
+template <class SRC>
+void QRfbDualColorHextile<SRC>::write(QTcpSocket *socket) const
+{
+    const int bpp = encoder->server->clientBytesPerPixel();
+    const int padding = 3;
+    QVarLengthArray<char> buffer(padding + 2 * bpp + sizeof(char) + sizeof(numRects));
+    char &subenc = buffer[padding];
+    int n = padding + sizeof(subenc);
+
+    subenc = 0x8; // AnySubrects
+
+    if (encoder->newBg) {
+        subenc |= 0x2; // Background
+        encoder->server->convertPixels(buffer.data() + n, (char*)&encoder->bg, 1);
+        n += bpp;
+//        encoder->newBg = false;
+    }
+
+    if (encoder->newFg) {
+        subenc |= 0x4; // Foreground
+        encoder->server->convertPixels(buffer.data() + n, (char*)&encoder->fg, 1);
+        n += bpp;
+//        encoder->newFg = false;
+    }
+    buffer[n] = numRects;
+    n += sizeof(numRects);
+
+    socket->write(buffer.data() + padding, n - padding);
+    socket->write((char*)rects, numRects * sizeof(Rect));
+}
+
+template <class SRC>
+void QRfbDualColorHextile<SRC>::next()
+{
+    for (int r = numRects - 1; r >= 0; --r) {
+        if (recty(r) == lasty())
+            continue;
+        if (recty(r) < lasty() - 1) // only search previous scanline
+            break;
+        if (rectx(r) == lastx() && width(r) == width(numRects)) {
+            ++rects[r].wh;
+            return;
+        }
+    }
+    ++numRects;
+}
+
+template <class SRC>
+inline void QRfbMultiColorHextile<SRC>::setColor(SRC color)
+{
+    encoder->server->convertPixels(reinterpret_cast<char*>(rect(numRects)),
+                                   (const char*)&color, 1);
+}
+
+template <class SRC>
+inline bool QRfbMultiColorHextile<SRC>::beginRect()
+{
+    if ((rects.size() + bpp + 2) > maxRectsSize)
+        return false;
+    rects.resize(rects.size() + bpp + 2);
+    return true;
+}
+
+template <class SRC>
+inline void QRfbMultiColorHextile<SRC>::endRect()
+{
+    setHeight(numRects, 1);
+    ++numRects;
+}
+
+template <class SRC>
+bool QRfbMultiColorHextile<SRC>::read(const uchar *data,
+                                      int width, int height, int stride)
+{
+    const SRC *ptr = reinterpret_cast<const SRC*>(data);
+    const int linestep = (stride / sizeof(SRC)) - width;
+
+    bpp = encoder->server->clientBytesPerPixel();
+
+    if (encoder->newBg)
+        encoder->bg = ptr[0];
+
+    const SRC bg = encoder->bg;
+    SRC color = bg;
+    bool inRect = false;
+
+    numRects = 0;
+    rects.clear();
+
+    for (int y = 0; y < height; ++y) {
+        for (int x = 0; x < width; ++x) {
+            if (inRect && *ptr != color) { // end rect
+                setWidth(numRects, x - rectx(numRects));
+                endRect();
+                inRect = false;
+            }
+
+            if (!inRect && *ptr != bg) { // begin rect
+                if (!beginRect())
+                    return false;
+                inRect = true;
+                color = *ptr;
+                setColor(color);
+                setX(numRects, x);
+                setY(numRects, y);
+            }
+            ++ptr;
+        }
+        if (inRect) { // end rect
+            setWidth(numRects, width - rectx(numRects));
+            endRect();
+            inRect = false;
+        }
+        ptr += linestep;
+    }
+
+    return true;
+}
+
+template <class SRC>
+void QRfbMultiColorHextile<SRC>::write(QTcpSocket *socket) const
+{
+    const int padding = 3;
+    QVarLengthArray<quint8> buffer(bpp + padding + sizeof(quint8) + sizeof(numRects));
+
+    quint8 &subenc = buffer[padding];
+    int n = padding + sizeof(quint8);
+
+    subenc = 8 | 16; // AnySubrects | SubrectsColoured
+
+    if (encoder->newBg) {
+        subenc |= 0x2; // Background
+        encoder->server->convertPixels(reinterpret_cast<char*>(buffer.data() + n),
+                                       reinterpret_cast<const char*>(&encoder->bg),
+                                       1);
+        n += bpp;
+//        encoder->newBg = false;
+    }
+
+    buffer[n] = numRects;
+    n += sizeof(numRects);
+
+    socket->write(reinterpret_cast<const char*>(buffer.data() + padding),
+                  n - padding);
+    socket->write(reinterpret_cast<const char*>(rects.constData()),
+                  rects.size());
+}
+
+bool QVNCServer::pixelConversionNeeded() const
+{
+    if (!sameEndian)
+        return true;
+
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+    if (qvnc_screen->swapBytes())
+        return true;
+#endif
+
+    const int screendepth = qvnc_screen->depth();
+    if (screendepth != pixelFormat.bitsPerPixel)
+        return true;
+
+    switch (screendepth) {
+    case 32:
+    case 24:
+        return false;
+    case 18:
+        return (pixelFormat.redBits == 6
+                && pixelFormat.greenBits == 6
+                && pixelFormat.blueBits == 6);
+    case 16:
+        return (pixelFormat.redBits == 5
+                && pixelFormat.greenBits == 6
+                && pixelFormat.blueBits == 5);
+    case 15:
+        return (pixelFormat.redBits == 5
+                && pixelFormat.greenBits == 5
+                && pixelFormat.blueBits == 5);
+    case 12:
+        return (pixelFormat.redBits == 4
+                && pixelFormat.greenBits == 4
+                && pixelFormat.blueBits == 4);
+    }
+    return true;
+}
+
+// count: number of pixels
+void QVNCServer::convertPixels(char *dst, const char *src, int count) const
+{
+    const int screendepth = qvnc_screen->depth();
+    const bool isBgr = qvnc_screen->pixelType() == QScreen::BGRPixel;
+
+    // cutoffs
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+    if (!swapBytes)
+#endif
+    if (sameEndian) {
+        if (screendepth == pixelFormat.bitsPerPixel) { // memcpy cutoffs
+
+            switch (screendepth) {
+            case 32:
+                memcpy(dst, src, count * sizeof(quint32));
+                return;
+            case 16:
+                if (pixelFormat.redBits == 5
+                    && pixelFormat.greenBits == 6
+                    && pixelFormat.blueBits == 5)
+                {
+                    memcpy(dst, src, count * sizeof(quint16));
+                    return;
+                }
+            }
+        } else if (screendepth == 16 && pixelFormat.bitsPerPixel == 32) {
+#if defined(__i386__) // Currently fails on ARM if dst is not 4 byte aligned
+            const quint32 *src32 = reinterpret_cast<const quint32*>(src);
+            quint32 *dst32 = reinterpret_cast<quint32*>(dst);
+            int count32 = count * sizeof(quint16) / sizeof(quint32);
+            while (count32--) {
+                const quint32 s = *src32++;
+                quint32 result1;
+                quint32 result2;
+
+                // red
+                result1 = ((s & 0xf8000000) | ((s & 0xe0000000) >> 5)) >> 8;
+                result2 = ((s & 0x0000f800) | ((s & 0x0000e000) >> 5)) << 8;
+
+                // green
+                result1 |= ((s & 0x07e00000) | ((s & 0x06000000) >> 6)) >> 11;
+                result2 |= ((s & 0x000007e0) | ((s & 0x00000600) >> 6)) << 5;
+
+                // blue
+                result1 |= ((s & 0x001f0000) | ((s & 0x001c0000) >> 5)) >> 13;
+                result2 |= ((s & 0x0000001f) | ((s & 0x0000001c) >> 5)) << 3;
+
+                *dst32++ = result2;
+                *dst32++ = result1;
+            }
+            if (count & 0x1) {
+                const quint16 *src16 = reinterpret_cast<const quint16*>(src);
+                dst32[count - 1] = qt_conv16ToRgb(src16[count - 1]);
+            }
+            return;
+#endif
+        }
+    }
+
+    const int bytesPerPixel = (pixelFormat.bitsPerPixel + 7) / 8;
+
+//    nibble = 0;
+
+    for (int i = 0; i < count; ++i) {
+        int r, g, b;
+
+        switch (screendepth) {
+#if 0
+        case 4: {
+            if (!nibble) {
+                r = ((*src) & 0x0f) << 4;
+            } else {
+                r = (*src) & 0xf0;
+                src++;
+            }
+            nibble = !nibble;
+            g = b = r;
+            break;
+        }
+#endif
+        case 8: {
+            QRgb rgb = qvnc_screen->clut()[int(*src)];
+            r = qRed(rgb);
+            g = qGreen(rgb);
+            b = qBlue(rgb);
+            src++;
+            break;
+        }
+#ifdef QT_QWS_DEPTH_12
+        case 12: {
+            quint32 p = quint32(*reinterpret_cast<const qrgb444*>(src));
+            r = qRed(p);
+            g = qGreen(p);
+            b = qBlue(p);
+            src += sizeof(qrgb444);
+            break;
+        }
+#endif
+#ifdef QT_QWS_DEPTH_15
+        case 15: {
+            quint32 p = quint32(*reinterpret_cast<const qrgb555*>(src));
+            r = qRed(p);
+            g = qGreen(p);
+            b = qBlue(p);
+            src += sizeof(qrgb555);
+            break;
+        }
+#endif
+        case 16: {
+            quint16 p = *reinterpret_cast<const quint16*>(src);
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+            if (swapBytes)
+                p = ((p & 0xff) << 8) | ((p & 0xff00) >> 8);
+#endif
+            r = (p >> 11) & 0x1f;
+            g = (p >> 5) & 0x3f;
+            b = p & 0x1f;
+            r <<= 3;
+            g <<= 2;
+            b <<= 3;
+            src += sizeof(quint16);
+            break;
+        }
+#ifdef QT_QWS_DEPTH_18
+        case 18: {
+            quint32 p = quint32(*reinterpret_cast<const qrgb666*>(src));
+            r = qRed(p);
+            g = qGreen(p);
+            b = qBlue(p);
+            src += sizeof(qrgb666);
+            break;
+        }
+#endif
+#ifdef QT_QWS_DEPTH_24
+        case 24: {
+            quint32 p = quint32(*reinterpret_cast<const qrgb888*>(src));
+            r = qRed(p);
+            g = qGreen(p);
+            b = qBlue(p);
+            src += sizeof(qrgb888);
+            break;
+        }
+#endif
+        case 32: {
+            quint32 p = *reinterpret_cast<const quint32*>(src);
+            r = (p >> 16) & 0xff;
+            g = (p >> 8) & 0xff;
+            b = p & 0xff;
+            src += sizeof(quint32);
+            break;
+        }
+        default: {
+            r = g = b = 0;
+            qDebug("QVNCServer: don't support %dbpp display", screendepth);
+            return;
+        }
+        }
+
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+        if (swapBytes ^ isBgr)
+#else
+        if (isBgr)
+#endif
+            qSwap(r, b);
+
+        r >>= (8 - pixelFormat.redBits);
+        g >>= (8 - pixelFormat.greenBits);
+        b >>= (8 - pixelFormat.blueBits);
+
+        int pixel = (r << pixelFormat.redShift) |
+                    (g << pixelFormat.greenShift) |
+                    (b << pixelFormat.blueShift);
+
+        if (sameEndian || pixelFormat.bitsPerPixel == 8) {
+            memcpy(dst, &pixel, bytesPerPixel); // XXX: do a simple for-loop instead?
+            dst += bytesPerPixel;
+            continue;
+        }
+
+
+        if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+            switch (pixelFormat.bitsPerPixel) {
+            case 16:
+                pixel = (((pixel & 0x0000ff00) << 8)  |
+                         ((pixel & 0x000000ff) << 24));
+                break;
+            case 32:
+                pixel = (((pixel & 0xff000000) >> 24) |
+                         ((pixel & 0x00ff0000) >> 8)  |
+                         ((pixel & 0x0000ff00) << 8)  |
+                         ((pixel & 0x000000ff) << 24));
+                break;
+            default:
+                qDebug("Cannot handle %d bpp client", pixelFormat.bitsPerPixel);
+            }
+        } else { // QSysInfo::ByteOrder == QSysInfo::LittleEndian
+            switch (pixelFormat.bitsPerPixel) {
+            case 16:
+                pixel = (((pixel & 0xff000000) >> 8) |
+                         ((pixel & 0x00ff0000) << 8));
+                break;
+            case 32:
+                pixel = (((pixel & 0xff000000) >> 24) |
+                         ((pixel & 0x00ff0000) >> 8)  |
+                         ((pixel & 0x0000ff00) << 8)  |
+                         ((pixel & 0x000000ff) << 24));
+                break;
+            default:
+                qDebug("Cannot handle %d bpp client",
+                       pixelFormat.bitsPerPixel);
+                break;
+            }
+        }
+        memcpy(dst, &pixel, bytesPerPixel); // XXX: simple for-loop instead?
+        dst += bytesPerPixel;
+    }
+}
+
+#ifndef QT_NO_QWS_CURSOR
+static void blendCursor(QImage &image, const QRect &imageRect)
+{
+    const QRect cursorRect = qt_screencursor->boundingRect();
+    const QRect intersection = (cursorRect & imageRect);
+    const QRect destRect = intersection.translated(-imageRect.topLeft());
+    const QRect srcRect = intersection.translated(-cursorRect.topLeft());
+
+    QPainter painter(&image);
+    painter.drawImage(destRect, qt_screencursor->image(), srcRect);
+    painter.end();
+}
+#endif // QT_NO_QWS_CURSOR
+
+QVNCDirtyMap::QVNCDirtyMap(QScreen *s)
+    : bytesPerPixel(0), numDirty(0), screen(s)
+{
+    bytesPerPixel = (screen->depth() + 7) / 8;
+    bufferWidth = screen->deviceWidth();
+    bufferHeight = screen->deviceHeight();
+    bufferStride = bufferWidth * bytesPerPixel;
+    buffer = new uchar[bufferHeight * bufferStride];
+
+    mapWidth = (bufferWidth + MAP_TILE_SIZE - 1) / MAP_TILE_SIZE;
+    mapHeight = (bufferHeight + MAP_TILE_SIZE - 1) / MAP_TILE_SIZE;
+    numTiles = mapWidth * mapHeight;
+    map = new uchar[numTiles];
+}
+
+QVNCDirtyMap::~QVNCDirtyMap()
+{
+    delete[] map;
+    delete[] buffer;
+}
+
+void QVNCDirtyMap::reset()
+{
+    memset(map, 1, numTiles);
+    memset(buffer, 0, bufferHeight * bufferStride);
+    numDirty = numTiles;
+}
+
+inline bool QVNCDirtyMap::dirty(int x, int y) const
+{
+    return map[y * mapWidth + x];
+}
+
+inline void QVNCDirtyMap::setClean(int x, int y)
+{
+    map[y * mapWidth + x] = 0;
+    --numDirty;
+}
+
+template <class T>
+void QVNCDirtyMapOptimized<T>::setDirty(int tileX, int tileY, bool force)
+{
+    static bool alwaysForce = qgetenv("QT_VNC_NO_COMPAREBUFFER").toInt();
+    if (alwaysForce)
+        force = true;
+
+    bool changed = false;
+
+    if (!force) {
+        const int lstep = screen->linestep();
+        const int startX = tileX * MAP_TILE_SIZE;
+        const int startY = tileY * MAP_TILE_SIZE;
+        const uchar *scrn = screen->base()
+                            + startY * lstep + startX * bytesPerPixel;
+        uchar *old = buffer + startY * bufferStride + startX * sizeof(T);
+
+        const int tileHeight = (startY + MAP_TILE_SIZE > bufferHeight ?
+                                bufferHeight - startY : MAP_TILE_SIZE);
+        const int tileWidth = (startX + MAP_TILE_SIZE > bufferWidth ?
+                               bufferWidth - startX : MAP_TILE_SIZE);
+        const bool doInlines = (tileWidth == MAP_TILE_SIZE);
+
+        int y = tileHeight;
+
+        if (doInlines) { // hw: memcmp/memcpy is inlined when using constants
+            while (y) {
+                if (memcmp(old, scrn, sizeof(T) * MAP_TILE_SIZE)) {
+                    changed = true;
+                    break;
+                }
+                scrn += lstep;
+                old += bufferStride;
+                --y;
+            }
+
+            while (y) {
+                memcpy(old, scrn, sizeof(T) * MAP_TILE_SIZE);
+                scrn += lstep;
+                old += bufferStride;
+                --y;
+            }
+        } else {
+            while (y) {
+                if (memcmp(old, scrn, sizeof(T) * tileWidth)) {
+                    changed = true;
+                    break;
+                }
+                scrn += lstep;
+                old += bufferStride;
+                --y;
+            }
+
+            while (y) {
+                memcpy(old, scrn, sizeof(T) * tileWidth);
+                scrn += lstep;
+                old += bufferStride;
+                --y;
+            }
+        }
+    }
+
+    const int mapIndex = tileY * mapWidth + tileX;
+    if ((force || changed) && !map[mapIndex]) {
+        map[mapIndex] = 1;
+        ++numDirty;
+    }
+}
+
+template <class SRC>
+QRfbHextileEncoder<SRC>::QRfbHextileEncoder(QVNCServer *s)
+    : QRfbEncoder(s),
+      singleColorHextile(this), dualColorHextile(this), multiColorHextile(this)
+{
+}
+
+/*
+    \internal
+    Send dirty rects using hextile encoding.
+*/
+template <class SRC>
+void QRfbHextileEncoder<SRC>::write()
+{
+    QWSDisplay::grab(true);
+
+    QVNCDirtyMap *map = server->dirtyMap();
+    QTcpSocket *socket = server->clientSocket();
+
+    const quint32 encoding = htonl(5); // hextile encoding
+    const int bytesPerPixel = server->clientBytesPerPixel();
+
+    {
+        const char tmp[2] = { 0, 0 }; // msg type, padding
+        socket->write(tmp, sizeof(tmp));
+    }
+    {
+        const quint16 count = htons(map->numDirty);
+        socket->write((char *)&count, sizeof(count));
+    }
+
+    if (map->numDirty <= 0) {
+        QWSDisplay::ungrab();
+        return;
+    }
+
+    newBg = true;
+    newFg = true;
+
+    const QImage screenImage = server->screenImage();
+    QRfbRect rect(0, 0, MAP_TILE_SIZE, MAP_TILE_SIZE);
+
+    for (int y = 0; y < map->mapHeight; ++y) {
+        if (rect.y + MAP_TILE_SIZE > server->screen()->height())
+            rect.h = server->screen()->height() - rect.y;
+        rect.w = MAP_TILE_SIZE;
+        for (int x = 0; x < map->mapWidth; ++x) {
+            if (!map->dirty(x, y))
+                continue;
+            map->setClean(x, y);
+
+            rect.x = x * MAP_TILE_SIZE;
+            if (rect.x + MAP_TILE_SIZE > server->screen()->deviceWidth())
+                rect.w = server->screen()->deviceWidth() - rect.x;
+            rect.write(socket);
+
+            socket->write((char *)&encoding, sizeof(encoding));
+
+            const uchar *screendata = screenImage.scanLine(rect.y)
+                                      + rect.x * screenImage.depth() / 8;
+            int linestep = screenImage.bytesPerLine();
+
+#ifndef QT_NO_QWS_CURSOR
+            // hardware cursors must be blended with the screen memory
+            const bool doBlendCursor = qt_screencursor
+                                       && !server->hasClientCursor()
+                                       && qt_screencursor->isAccelerated();
+            QImage tileImage;
+            if (doBlendCursor) {
+                const QRect tileRect(rect.x, rect.y, rect.w, rect.h);
+                const QRect cursorRect = qt_screencursor->boundingRect()
+                                         .translated(-server->screen()->offset());
+                if (tileRect.intersects(cursorRect)) {
+                    tileImage = screenImage.copy(tileRect);
+                    blendCursor(tileImage,
+                                tileRect.translated(server->screen()->offset()));
+                    screendata = tileImage.bits();
+                    linestep = tileImage.bytesPerLine();
+                }
+            }
+#endif // QT_NO_QWS_CURSOR
+
+            if (singleColorHextile.read(screendata, rect.w, rect.h, linestep)) {
+                singleColorHextile.write(socket);
+            } else if (dualColorHextile.read(screendata, rect.w, rect.h, linestep)) {
+                dualColorHextile.write(socket);
+            } else if (multiColorHextile.read(screendata, rect.w, rect.h, linestep)) {
+                multiColorHextile.write(socket);
+            } else if (server->doPixelConversion()) {
+                const int bufferSize = rect.w * rect.h * bytesPerPixel + 1;
+                const int padding = sizeof(quint32) - sizeof(char);
+                buffer.resize(bufferSize + padding);
+
+                buffer[padding] = 1; // Raw subencoding
+
+                // convert pixels
+                char *b = buffer.data() + padding + 1;
+                const int bstep = rect.w * bytesPerPixel;
+                for (int i = 0; i < rect.h; ++i) {
+                    server->convertPixels(b, (const char*)screendata, rect.w);
+                    screendata += linestep;
+                    b += bstep;
+                }
+                socket->write(buffer.constData() + padding, bufferSize);
+            } else {
+                quint8 subenc = 1; // Raw subencoding
+                socket->write((char *)&subenc, 1);
+
+                // send pixels
+                for (int i = 0; i < rect.h; ++i) {
+                    socket->write((const char*)screendata,
+                                  rect.w * bytesPerPixel);
+                    screendata += linestep;
+                }
+            }
+        }
+        if (socket->state() == QAbstractSocket::UnconnectedState)
+            break;
+        rect.y += MAP_TILE_SIZE;
+    }
+    socket->flush();
+    Q_ASSERT(map->numDirty == 0);
+
+    QWSDisplay::ungrab();
+}
+
+void QRfbRawEncoder::write()
+{
+    QWSDisplay::grab(false);
+
+    QVNCDirtyMap *map = server->dirtyMap();
+    QTcpSocket *socket = server->clientSocket();
+
+    const int bytesPerPixel = server->clientBytesPerPixel();
+
+    // create a region from the dirty rects and send the region's merged rects.
+    QRegion rgn;
+    if (map) {
+        for (int y = 0; y < map->mapHeight; ++y) {
+            for (int x = 0; x < map->mapWidth; ++x) {
+                if (!map->dirty(x, y))
+                    continue;
+                rgn += QRect(x * MAP_TILE_SIZE, y * MAP_TILE_SIZE,
+                             MAP_TILE_SIZE, MAP_TILE_SIZE);
+                map->setClean(x, y);
+            }
+        }
+
+        rgn &= QRect(0, 0, server->screen()->deviceWidth(),
+                     server->screen()->deviceHeight());
+    }
+    const QVector<QRect> rects = rgn.rects();
+
+    {
+        const char tmp[2] = { 0, 0 }; // msg type, padding
+        socket->write(tmp, sizeof(tmp));
+    }
+
+    {
+        const quint16 count = htons(rects.size());
+        socket->write((char *)&count, sizeof(count));
+    }
+
+    if (rects.size() <= 0) {
+        QWSDisplay::ungrab();
+        return;
+    }
+
+    const QImage screenImage = server->screenImage();
+
+    for (int i = 0; i < rects.size(); ++i) {
+        const QRect tileRect = rects.at(i);
+        const QRfbRect rect(tileRect.x(), tileRect.y(),
+                            tileRect.width(), tileRect.height());
+        rect.write(socket);
+
+        const quint32 encoding = htonl(0); // raw encoding
+        socket->write((char *)&encoding, sizeof(encoding));
+
+        int linestep = screenImage.bytesPerLine();
+        const uchar *screendata = screenImage.scanLine(rect.y)
+                                  + rect.x * screenImage.depth() / 8;
+
+#ifndef QT_NO_QWS_CURSOR
+        // hardware cursors must be blended with the screen memory
+        const bool doBlendCursor = qt_screencursor
+                                   && !server->hasClientCursor()
+                                   && qt_screencursor->isAccelerated();
+        QImage tileImage;
+        if (doBlendCursor) {
+            const QRect cursorRect = qt_screencursor->boundingRect()
+                                     .translated(-server->screen()->offset());
+            if (tileRect.intersects(cursorRect)) {
+                tileImage = screenImage.copy(tileRect);
+                blendCursor(tileImage,
+                            tileRect.translated(server->screen()->offset()));
+                screendata = tileImage.bits();
+                linestep = tileImage.bytesPerLine();
+            }
+        }
+#endif // QT_NO_QWS_CURSOR
+
+        if (server->doPixelConversion()) {
+            const int bufferSize = rect.w * rect.h * bytesPerPixel;
+            if (bufferSize > buffer.size())
+                buffer.resize(bufferSize);
+
+            // convert pixels
+            char *b = buffer.data();
+            const int bstep = rect.w * bytesPerPixel;
+            for (int i = 0; i < rect.h; ++i) {
+                server->convertPixels(b, (const char*)screendata, rect.w);
+                screendata += linestep;
+                b += bstep;
+            }
+            socket->write(buffer.constData(), bufferSize);
+        } else {
+            for (int i = 0; i < rect.h; ++i) {
+                socket->write((const char*)screendata, rect.w * bytesPerPixel);
+                screendata += linestep;
+            }
+        }
+        if (socket->state() == QAbstractSocket::UnconnectedState)
+            break;
+    }
+    socket->flush();
+
+    QWSDisplay::ungrab();
+}
+
+inline QImage QVNCServer::screenImage() const
+{
+    return QImage(qvnc_screen->base(), qvnc_screen->deviceWidth(),
+                  qvnc_screen->deviceHeight(), qvnc_screen->linestep(),
+                  qvnc_screen->pixelFormat());
+}
+
+void QVNCServer::checkUpdate()
+{
+    if (!wantUpdate)
+        return;
+
+    if (dirtyCursor) {
+#ifndef QT_NO_QWS_CURSOR
+        Q_ASSERT(qvnc_cursor);
+        qvnc_cursor->write();
+#endif
+        dirtyCursor = false;
+        wantUpdate = false;
+        return;
+    }
+
+    if (dirtyMap()->numDirty > 0) {
+        if (encoder)
+            encoder->write();
+        wantUpdate = false;
+    }
+}
+
+void QVNCServer::discardClient()
+{
+    timer->stop();
+    state = Unconnected;
+    delete encoder;
+    encoder = 0;
+#ifndef QT_NO_QWS_CURSOR
+    delete qvnc_cursor;
+    qvnc_cursor = 0;
+#endif
+    if (!qvnc_screen->screen())
+        QWSServer::instance()->enablePainting(false);
+}
+
+
+//===========================================================================
+
+/*!
+    \class QVNCScreen
+    \internal
+    \ingroup qws
+
+    \brief The QVNCScreen class implements a screen driver for VNC
+    servers.
+
+    Note that this class is only available in \l{Qt for Embedded Linux}.
+    Custom screen drivers can be added by subclassing the QScreen
+    class, using the QScreenDriverFactory class to dynamically load
+    the driver into the application.
+
+    The VNC protocol allows you to view and interact with the
+    computer's display from anywhere on the network. See the
+    \l{The VNC Protocol and Qt for Embedded Linux}{VNC protocol}
+    documentation for more details.
+
+    The default implementation of QVNCScreen inherits QLinuxFbScreen,
+    but any QScreen subclass, or QScreen itself, can serve as its base
+    class. This is easily achieved by manipulating the \c
+    VNCSCREEN_BASE definition in the header file.
+
+    \sa QScreen, {Running Applications}
+*/
+
+/*!
+    \fn QVNCScreen::QVNCScreen(int displayId)
+
+    Constructs a QVNCScreen object. The \a displayId argument
+    identifies the Qt for Embedded Linux server to connect to.
+*/
+QVNCScreen::QVNCScreen(int display_id)
+    : QProxyScreen(display_id, VNCClass)
+{
+    d_ptr = new QVNCScreenPrivate(this);
+}
+
+/*!
+    Destroys this QVNCScreen object.
+*/
+QVNCScreen::~QVNCScreen()
+{
+    delete d_ptr;
+}
+
+/*!
+    \reimp
+*/
+void QVNCScreen::setDirty(const QRect &rect)
+{
+    d_ptr->setDirty(rect);
+}
+
+void QVNCScreenPrivate::setDirty(const QRect& rect, bool force)
+{
+    if (rect.isEmpty())
+        return;
+
+    if (q_ptr->screen())
+        q_ptr->screen()->setDirty(rect);
+
+    if (!vncServer || !vncServer->isConnected())
+        return;
+
+    const QRect r = rect.translated(-q_ptr->offset());
+    const int x1 = r.x() / MAP_TILE_SIZE;
+    int y = r.y() / MAP_TILE_SIZE;
+    for (; (y <= r.bottom() / MAP_TILE_SIZE) && y < dirty->mapHeight; y++)
+        for (int x = x1; (x <= r.right() / MAP_TILE_SIZE) && x < dirty->mapWidth; x++)
+            dirty->setDirty(x, y, force);
+
+    vncServer->setDirty();
+}
+
+static int getDisplayId(const QString &spec)
+{
+    QRegExp regexp(QLatin1String(":(\\d+)\\b"));
+    if (regexp.lastIndexIn(spec) != -1) {
+        const QString capture = regexp.cap(1);
+        return capture.toInt();
+    }
+    return 0;
+}
+
+/*!
+    \reimp
+*/
+bool QVNCScreen::connect(const QString &displaySpec)
+{
+    QString dspec = displaySpec;
+    if (dspec.startsWith(QLatin1String("vnc:"), Qt::CaseInsensitive))
+        dspec = dspec.mid(QString(QLatin1String("vnc:")).size());
+    else if (dspec.compare(QLatin1String("vnc"), Qt::CaseInsensitive) == 0)
+        dspec = QString();
+
+    const QString displayIdSpec = QString(QLatin1String(" :%1")).arg(displayId);
+    if (dspec.endsWith(displayIdSpec))
+        dspec = dspec.left(dspec.size() - displayIdSpec.size());
+
+    QStringList args = dspec.split(QLatin1Char(':'),
+                                   QString::SkipEmptyParts);
+    QRegExp refreshRegexp(QLatin1String("^refreshrate=(\\d+)$"));
+    int index = args.indexOf(refreshRegexp);
+    if (index >= 0) {
+        d_ptr->refreshRate = refreshRegexp.cap(1).toInt();
+        args.removeAt(index);
+        dspec = args.join(QLatin1String(":"));
+    }
+
+    QString driver = dspec;
+    int colon = driver.indexOf(QLatin1Char(':'));
+    if (colon >= 0)
+        driver.truncate(colon);
+
+    if (QScreenDriverFactory::keys().contains(driver, Qt::CaseInsensitive)) {
+        const int id = getDisplayId(dspec);
+        QScreen *s = qt_get_screen(id, dspec.toLatin1().constData());
+        setScreen(s);
+    } else { // create virtual screen
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+        QScreen::setFrameBufferLittleEndian(false);
+#endif
+
+        d = qgetenv("QWS_DEPTH").toInt();
+        if (!d)
+            d = 16;
+
+        QByteArray str = qgetenv("QWS_SIZE");
+        if(!str.isEmpty()) {
+            sscanf(str.constData(), "%dx%d", &w, &h);
+            dw = w;
+            dh = h;
+        } else {
+            dw = w = 640;
+            dh = h = 480;
+        }
+
+        const QStringList args = displaySpec.split(QLatin1Char(':'),
+                                                   QString::SkipEmptyParts);
+
+        if (args.contains(QLatin1String("paintonscreen"), Qt::CaseInsensitive))
+            d_ptr->doOnScreenSurface = true;
+
+        QRegExp depthRegexp(QLatin1String("^depth=(\\d+)$"));
+        if (args.indexOf(depthRegexp) != -1)
+            d = depthRegexp.cap(1).toInt();
+
+        QRegExp sizeRegexp(QLatin1String("^size=(\\d+)x(\\d+)$"));
+        if (args.indexOf(sizeRegexp) != -1) {
+            dw = w = sizeRegexp.cap(1).toInt();
+            dh = h = sizeRegexp.cap(2).toInt();
+        }
+
+        // Handle display physical size spec.
+        QRegExp mmWidthRegexp(QLatin1String("^mmWidth=?(\\d+)$"));
+        if (args.indexOf(mmWidthRegexp) != -1) {
+            const int mmWidth = mmWidthRegexp.cap(1).toInt();
+            if (mmWidth > 0)
+                d_ptr->dpiX = dw * 25.4 / mmWidth;
+        }
+        QRegExp mmHeightRegexp(QLatin1String("^mmHeight=?(\\d+)$"));
+        if (args.indexOf(mmHeightRegexp) != -1) {
+            const int mmHeight = mmHeightRegexp.cap(1).toInt();
+            if (mmHeight > 0)
+                d_ptr->dpiY = dh * 25.4 / mmHeight;
+        }
+        QRegExp dpiRegexp(QLatin1String("^dpi=(\\d+)(?:,(\\d+))?$"));
+        if (args.indexOf(dpiRegexp) != -1) {
+            const qreal dpiX = dpiRegexp.cap(1).toFloat();
+            const qreal dpiY = dpiRegexp.cap(2).toFloat();
+            if (dpiX > 0)
+                d_ptr->dpiX = dpiX;
+            d_ptr->dpiY = (dpiY > 0 ? dpiY : dpiX);
+        }
+
+        QWSServer::setDefaultMouse("None");
+        QWSServer::setDefaultKeyboard("None");
+
+        d_ptr->configure();
+    }
+
+    // XXX
+    qt_screen = this;
+
+    return true;
+}
+
+/*!
+    \reimp
+*/
+void QVNCScreen::disconnect()
+{
+    QProxyScreen::disconnect();
+#if !defined(QT_NO_QWS_MULTIPROCESS) && !defined(QT_NO_SHAREDMEMORY)
+    d_ptr->shm.detach();
+#endif
+}
+
+/*!
+    \reimp
+*/
+bool QVNCScreen::initDevice()
+{
+    if (!QProxyScreen::screen() && d == 4) {
+        screencols = 16;
+        int val = 0;
+        for (int idx = 0; idx < 16; idx++, val += 17) {
+            screenclut[idx] = qRgb(val, val, val);
+        }
+    }
+    d_ptr->vncServer = new QVNCServer(this, displayId);
+    d_ptr->vncServer->setRefreshRate(d_ptr->refreshRate);
+
+    switch (depth()) {
+#ifdef QT_QWS_DEPTH_32
+    case 32:
+        d_ptr->dirty = new QVNCDirtyMapOptimized<quint32>(this);
+        break;
+#endif
+#ifdef QT_QWS_DEPTH_24
+    case 24:
+        d_ptr->dirty = new QVNCDirtyMapOptimized<qrgb888>(this);
+        break;
+#endif
+#ifdef QT_QWS_DEPTH_18
+    case 18:
+        d_ptr->dirty = new QVNCDirtyMapOptimized<qrgb666>(this);
+        break;
+#endif
+#ifdef QT_QWS_DEPTH_16
+    case 16:
+        d_ptr->dirty = new QVNCDirtyMapOptimized<quint16>(this);
+        break;
+#endif
+#ifdef QT_QWS_DEPTH_15
+    case 15:
+        d_ptr->dirty = new QVNCDirtyMapOptimized<qrgb555>(this);
+        break;
+#endif
+#ifdef QT_QWS_DEPTH_12
+    case 12:
+        d_ptr->dirty = new QVNCDirtyMapOptimized<qrgb444>(this);
+        break;
+#endif
+#ifdef QT_QWS_DEPTH_8
+    case 8:
+        d_ptr->dirty = new QVNCDirtyMapOptimized<quint8>(this);
+        break;
+#endif
+    default:
+        qWarning("QVNCScreen::initDevice: No support for screen depth %d",
+                 depth());
+        d_ptr->dirty = 0;
+        return false;
+    }
+
+
+    const bool ok = QProxyScreen::initDevice();
+#ifndef QT_NO_QWS_CURSOR
+    qt_screencursor = new QVNCCursor(this);
+#endif
+    if (QProxyScreen::screen())
+        return ok;
+
+#ifdef QT_BUILD_INTERNAL
+    if (qgetenv("QT_VNC_NO_DISABLEPAINTING").toInt() <= 0)
+#endif
+    // No need to do painting while there's no clients attached
+    QWSServer::instance()->enablePainting(false);
+
+    return true;
+}
+
+/*!
+    \reimp
+*/
+void QVNCScreen::shutdownDevice()
+{
+    QProxyScreen::shutdownDevice();
+    delete d_ptr->vncServer;
+    delete d_ptr->dirty;
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_QWS_VNC
diff --git a/src/plugins/gfxdrivers/vnc/qscreenvnc_qws.h b/src/plugins/gfxdrivers/vnc/qscreenvnc_qws.h
new file mode 100644
index 0000000..70ff067
--- /dev/null
+++ b/src/plugins/gfxdrivers/vnc/qscreenvnc_qws.h
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the plugins 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCREENVNC_QWS_H
+#define QSCREENVNC_QWS_H
+
+#include <QtGui/qscreenproxy_qws.h>
+
+#ifndef QT_NO_QWS_VNC
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QVNCScreenPrivate;
+
+class QVNCScreen : public QProxyScreen
+{
+public:
+    explicit QVNCScreen(int display_id);
+    virtual ~QVNCScreen();
+
+    bool initDevice();
+    bool connect(const QString &displaySpec);
+    void disconnect();
+    void shutdownDevice();
+
+    void setDirty(const QRect&);
+
+private:
+    friend class QVNCCursor;
+    friend class QVNCClientCursor;
+    friend class QVNCServer;
+    friend class QVNCScreenPrivate;
+
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+    bool swapBytes() const;
+#endif
+
+    QVNCScreenPrivate *d_ptr;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QT_NO_QWS_VNC
+#endif // QSCREENVNC_QWS_H
diff --git a/src/plugins/gfxdrivers/vnc/vnc.pro b/src/plugins/gfxdrivers/vnc/vnc.pro
new file mode 100644
index 0000000..31da2f4
--- /dev/null
+++ b/src/plugins/gfxdrivers/vnc/vnc.pro
@@ -0,0 +1,16 @@
+TARGET = qgfxvnc
+include(../../qpluginbase.pri)
+
+DEFINES	+= QT_QWS_VNC
+
+QTDIR_build:DESTDIR = $$QT_BUILD_TREE/plugins/gfxdrivers
+
+HEADERS = \
+	qscreenvnc_qws.h \
+	qscreenvnc_p.h
+
+SOURCES = main.cpp \
+	qscreenvnc_qws.cpp
+
+target.path += $$[QT_INSTALL_PLUGINS]/gfxdrivers
+INSTALLS += target