Initial work on a VNC QPA plugin

The basics work and the VNC client is showing pixels

Change-Id: Ie31efce2f31dd5f57af209dcc9c8f9aace730afd
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>

9 files changed, 2454 insertions, 0 deletions

diff --git a/src/plugins/platforms/vnc/main.cpp b/src/plugins/platforms/vnc/main.cpp
new file mode 100644
index 0000000000..b3c78e9caf
--- /dev/null
+++ b/src/plugins/platforms/vnc/main.cpp
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qpa/qplatformintegrationplugin.h>
+#include "qvncintegration.h"
+#include "qvnc_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QVncIntegrationPlugin : public QPlatformIntegrationPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID QPlatformIntegrationFactoryInterface_iid FILE "vnc.json")
+public:
+    QPlatformIntegration *create(const QString&, const QStringList&) Q_DECL_OVERRIDE;
+};
+
+QPlatformIntegration* QVncIntegrationPlugin::create(const QString& system, const QStringList& paramList)
+{
+    QT_VNC_DEBUG() << "loading vnc plugin" << system;
+    Q_UNUSED(paramList);
+    if (!system.compare(QLatin1String("vnc"), Qt::CaseInsensitive))
+        return new QVncIntegration(paramList);
+
+    return 0;
+}
+
+QT_END_NAMESPACE
+
+#include "main.moc"
+
diff --git a/src/plugins/platforms/vnc/qvnc.cpp b/src/plugins/platforms/vnc/qvnc.cpp
new file mode 100644
index 0000000000..87c213c9ad
--- /dev/null
+++ b/src/plugins/platforms/vnc/qvnc.cpp
@@ -0,0 +1,1419 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "qvnc_p.h"
+#include "qvncscreen.h"
+#include "QtNetwork/qtcpserver.h"
+#include "QtNetwork/qtcpsocket.h"
+#include <qthread.h>
+
+#ifdef Q_OS_WIN
+#include <Winsock2.h>
+#else
+#include <arpa/inet.h>
+#endif
+
+QVncDirtyMap::QVncDirtyMap(QVncScreen *screen)
+    : screen(screen), bytesPerPixel(0), numDirty(0)
+{
+    bytesPerPixel = (screen->depth() + 7) / 8;
+    bufferWidth = screen->geometry().width();
+    bufferHeight = screen->geometry().height();
+    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 = qEnvironmentVariableIsSet("QT_VNC_NO_COMPAREBUFFER");
+    if (alwaysForce)
+        force = true;
+
+    bool changed = false;
+
+    if (!force) {
+        const int lstep = bufferStride;
+        const int startX = tileX * MAP_TILE_SIZE;
+        const int startY = tileY * MAP_TILE_SIZE;
+        const uchar *scrn = screen->image()->constBits()
+                            + 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 QVncDirtyMapOptimized<unsigned char>;
+template class QVncDirtyMapOptimized<unsigned short>;
+template class QVncDirtyMapOptimized<unsigned int>;
+
+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       },
+
+    { 0xffb0, Qt::Key_0         },
+    { 0xffb1, Qt::Key_1         },
+    { 0xffb2, Qt::Key_2         },
+    { 0xffb3, Qt::Key_3         },
+    { 0xffb4, Qt::Key_4         },
+    { 0xffb5, Qt::Key_5         },
+    { 0xffb6, Qt::Key_6         },
+    { 0xffb7, Qt::Key_7         },
+    { 0xffb8, Qt::Key_8         },
+    { 0xffb9, Qt::Key_9         },
+
+    { 0xff8d, Qt::Key_Return    },
+    { 0xffaa, Qt::Key_Asterisk  },
+    { 0xffab, Qt::Key_Plus      },
+    { 0xffad, Qt::Key_Minus     },
+    { 0xffae, Qt::Key_Period    },
+    { 0xffaf, Qt::Key_Slash     },
+
+    { 0xff95, Qt::Key_Home      },
+    { 0xff96, Qt::Key_Left      },
+    { 0xff97, Qt::Key_Up        },
+    { 0xff98, Qt::Key_Right     },
+    { 0xff99, Qt::Key_Down      },
+    { 0xff9a, Qt::Key_PageUp    },
+    { 0xff9b, Qt::Key_PageDown  },
+    { 0xff9c, Qt::Key_End       },
+    { 0xff9e, Qt::Key_Insert    },
+    { 0xff9f, Qt::Key_Delete    },
+
+    { 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 >= ' ' && keycode <= '~')
+        unicode = keycode;
+
+    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;
+}
+
+void QRfbRawEncoder::write()
+{
+//    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 = server->screen()->dirtyRegion;
+    server->screen()->clearDirty();
+    QT_VNC_DEBUG() << "QRfbRawEncoder::write()" << 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()->geometry().width(),
+//                     server->screen()->geometry().height());
+//    }
+    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)
+        return;
+
+    const QImage screenImage = server->screenImage();
+    static int frame = 0;
+    ++frame;
+    QString filename = QString("screen.%1.png").arg(frame);
+    screenImage.save(filename);
+
+    for (const QRect &tileRect: rects) {
+        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;
+
+#if 0 //ndef 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();
+}
+
+
+QVncClientCursor::QVncClientCursor(QVncServer *s)
+    : server(s)
+{
+}
+
+QVncClientCursor::~QVncClientCursor()
+{
+}
+
+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()->format());
+    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);
+}
+
+#ifndef QT_NO_CURSOR
+void QVncClientCursor::changeCursor(QCursor *widgetCursor, QWindow *window)
+{
+    Q_UNUSED(window);
+    const Qt::CursorShape shape = widgetCursor ? widgetCursor->shape() : Qt::ArrowCursor;
+
+    if (shape == Qt::BitmapCursor) {
+        // application supplied cursor
+        hotspot = widgetCursor->hotSpot();
+        cursor = widgetCursor->pixmap().toImage();
+    } else {
+        // system cursor
+        QPlatformCursorImage platformImage(0, 0, 0, 0, 0, 0);
+        platformImage.set(shape);
+        cursor = *platformImage.image();
+        hotspot = platformImage.hotspot();
+    }
+    server->setDirtyCursor();
+}
+#endif
+
+
+QVncServer::QVncServer(QVncScreen *screen)
+    : qvnc_screen(screen)
+{
+    QTimer::singleShot(0, this, SLOT(init()));
+}
+
+QVncServer::QVncServer(QVncScreen *screen, int /*id*/)
+    : qvnc_screen(screen)
+{
+    QTimer::singleShot(0, this, SLOT(init()));
+}
+
+void QVncServer::init()
+{
+    const int port = 5900;
+    handleMsg = false;
+    client = 0;
+    encodingsPending = 0;
+    cutTextPending = 0;
+    keymod = 0;
+    state = Disconnected;
+    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
+        QT_VNC_DEBUG("QVncServer created on port %d", port);
+    QT_VNC_DEBUG() << "running in thread" << thread() << QThread::currentThread();
+
+    serverSocket->waitForNewConnection(-1);
+    newConnection();
+
+    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()
+{
+    QT_VNC_DEBUG() << "!!!!!!!!!!!! new connection";
+    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;
+
+    QT_VNC_DEBUG() << "new Connection" << thread();
+
+    // ####
+//    if (!qvnc_screen->screen() && !qvnc_screen->noDisablePainting)
+//        QWSServer::instance()->enablePainting(true);
+}
+
+void QVncServer::readClient()
+{
+    QT_VNC_DEBUG() << "readClient" << state;
+    switch (state) {
+        case Protocol:
+            if (client->bytesAvailable() >= 12) {
+                char proto[13];
+                client->read(proto, 12);
+                proto[12] = '\0';
+                QT_VNC_DEBUG("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->geometry().width();
+                sim.height = qvnc_screen->geometry().height();
+                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);
+        QT_VNC_DEBUG("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));
+        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);
+            QT_VNC_DEBUG("QVncServer::setEncodings: %d", enc);
+            switch (enc) {
+            case Raw:
+                if (!encoder) {
+                    encoder = new QRfbRawEncoder(this);
+                    QT_VNC_DEBUG("QVncServer::setEncodings: using raw");
+                }
+               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;
+                }
+                QT_VNC_DEBUG("QVncServer::setEncodings: using hextile");
+                break;
+            case ZRLE:
+                supportZRLE = true;
+                break;
+            case Cursor:
+                supportCursor = true;
+#ifndef QT_NO_QWS_CURSOR
+                if (!qvnc_screen->screen()) {
+                    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);
+        QT_VNC_DEBUG("QVncServer::setEncodings: fallback using raw");
+    }
+}
+
+void QVncServer::frameBufferUpdateRequest()
+{
+    QT_VNC_DEBUG() << "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->geometry().topLeft());
+            qvnc_screen->setDirty(r);
+        }
+        wantUpdate = true;
+        checkUpdate();
+        handleMsg = false;
+    }
+}
+
+void QVncServer::pointerEvent()
+{
+    QRfbPointerEvent ev;
+    if (ev.read(client)) {
+        //const QPoint offset = qvnc_screen->geometry().topLeft();
+        // ### 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 (cutTextPending == 0 && 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;
+    }
+}
+
+
+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();
+
+    // 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 = 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->image()->colorTable()[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)
+            qSwap(r, b);
+#endif
+
+        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);
+        dst += bytesPerPixel;
+    }
+}
+
+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 (!qvnc_screen->dirtyRegion.isEmpty()) {
+        if (encoder)
+            encoder->write();
+        wantUpdate = false;
+    }
+//    if (dirtyMap()->numDirty > 0) {
+//        if (encoder)
+//            encoder->write();
+//        wantUpdate = false;
+//    }
+}
+
+void QVncServer::discardClient()
+{
+    timer->stop();
+    state = Disconnected;
+    delete encoder;
+    encoder = 0;
+#ifndef QT_NO_QWS_CURSOR
+    delete qvnc_cursor;
+    qvnc_cursor = 0;
+#endif
+    // ###
+//    if (!qvnc_screen->screen() && !qvnc_screen->noDisablePainting && QWSServer::instance())
+//        QWSServer::instance()->enablePainting(false);
+}
+
+inline QImage QVncServer::screenImage() const
+{
+    return *qvnc_screen->image();
+}
diff --git a/src/plugins/platforms/vnc/qvnc_p.h b/src/plugins/platforms/vnc/qvnc_p.h
new file mode 100644
index 0000000000..37558196e4
--- /dev/null
+++ b/src/plugins/platforms/vnc/qvnc_p.h
@@ -0,0 +1,476 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVNC_P_H
+#define QVNC_P_H
+
+#include <QtCore/qdebug.h>
+#if 0
+#define QT_VNC_DEBUG if (1) {} else qDebug
+#else
+#define QT_VNC_DEBUG qDebug
+#endif
+
+#include "qvncscreen.h"
+
+#include <QtCore/qbytearray.h>
+#include <QtCore/qvarlengtharray.h>
+#include <qpa/qplatformcursor.h>
+
+class QTcpSocket;
+class QTcpServer;
+
+class QVncScreen;
+class QVncServer;
+class QVncClientCursor;
+
+#define MAP_TILE_SIZE 16
+#define MAP_WIDTH 1280 / MAP_TILE_SIZE
+#define MAP_HEIGHT 1024 / MAP_TILE_SIZE
+
+class QVncDirtyMap
+{
+public:
+    QVncDirtyMap(QVncScreen *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);
+
+    QVncScreen *screen;
+    int bytesPerPixel;
+    int numDirty;
+    int mapWidth;
+    int mapHeight;
+
+protected:
+    uchar *map;
+    uchar *buffer;
+    int bufferWidth;
+    int bufferHeight;
+    int bufferStride;
+    int numTiles;
+};
+
+template <class T>
+class QVncDirtyMapOptimized : public QVncDirtyMap
+{
+public:
+    QVncDirtyMapOptimized(QVncScreen *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 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 QVncClientCursor : public QPlatformCursor
+{
+public:
+    QVncClientCursor(QVncServer *s);
+    ~QVncClientCursor();
+
+    void write() const;
+
+    void changeCursor(QCursor *widgetCursor, QWindow *window);
+
+    QImage cursor;
+    QPoint hotspot;
+    QVncServer *server;
+};
+
+
+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->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();
+    void init();
+
+private:
+    enum ClientState { Disconnected, 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;
+};
+
+
+#endif
diff --git a/src/plugins/platforms/vnc/qvncintegration.cpp b/src/plugins/platforms/vnc/qvncintegration.cpp
new file mode 100644
index 0000000000..adef5423a5
--- /dev/null
+++ b/src/plugins/platforms/vnc/qvncintegration.cpp
@@ -0,0 +1,131 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the FOO module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qvncintegration.h"
+#include "qvncscreen.h"
+#include "qvnc_p.h"
+
+#include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
+#include <QtPlatformSupport/private/qgenericunixservices_p.h>
+#include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
+
+#include <QtPlatformSupport/private/qfbbackingstore_p.h>
+#include <QtPlatformSupport/private/qfbwindow_p.h>
+#include <QtPlatformSupport/private/qfbcursor_p.h>
+
+#include <QtGui/private/qguiapplication_p.h>
+#include <qpa/qplatforminputcontextfactory_p.h>
+
+#ifndef QT_NO_LIBINPUT
+#include <QtPlatformSupport/private/qlibinputhandler_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QVncIntegration::QVncIntegration(const QStringList &paramList)
+    : m_fontDb(new QGenericUnixFontDatabase),
+      m_services(new QGenericUnixServices)
+{
+    m_primaryScreen = new QVncScreen(paramList);
+    m_server = new QVncServer(m_primaryScreen);
+    m_primaryScreen->vncServer = m_server;
+}
+
+QVncIntegration::~QVncIntegration()
+{
+    delete m_server;
+    destroyScreen(m_primaryScreen);
+}
+
+void QVncIntegration::initialize()
+{
+    if (m_primaryScreen->initialize())
+        screenAdded(m_primaryScreen);
+    else
+        qWarning("vnc: Failed to initialize screen");
+
+    m_inputContext = QPlatformInputContextFactory::create();
+
+    m_nativeInterface.reset(new QPlatformNativeInterface);
+}
+
+bool QVncIntegration::hasCapability(QPlatformIntegration::Capability cap) const
+{
+    switch (cap) {
+    case ThreadedPixmaps: return true;
+    case WindowManagement: return false;
+    default: return QPlatformIntegration::hasCapability(cap);
+    }
+}
+
+QPlatformBackingStore *QVncIntegration::createPlatformBackingStore(QWindow *window) const
+{
+    return new QFbBackingStore(window);
+}
+
+QPlatformWindow *QVncIntegration::createPlatformWindow(QWindow *window) const
+{
+    return new QFbWindow(window);
+}
+
+QAbstractEventDispatcher *QVncIntegration::createEventDispatcher() const
+{
+    return createUnixEventDispatcher();
+}
+
+QList<QPlatformScreen *> QVncIntegration::screens() const
+{
+    QList<QPlatformScreen *> list;
+    list.append(m_primaryScreen);
+    return list;
+}
+
+QPlatformFontDatabase *QVncIntegration::fontDatabase() const
+{
+    return m_fontDb.data();
+}
+
+QPlatformServices *QVncIntegration::services() const
+{
+    return m_services.data();
+}
+
+QPlatformNativeInterface *QVncIntegration::nativeInterface() const
+{
+    return m_nativeInterface.data();
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/platforms/vnc/qvncintegration.h b/src/plugins/platforms/vnc/qvncintegration.h
new file mode 100644
index 0000000000..293ff54376
--- /dev/null
+++ b/src/plugins/platforms/vnc/qvncintegration.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVNCINTEGRATION_H
+#define QVNCINTEGRATION_H
+
+#include <qpa/qplatformintegration.h>
+#include <qpa/qplatformnativeinterface.h>
+
+QT_BEGIN_NAMESPACE
+
+class QAbstractEventDispatcher;
+class QVncScreen;
+class QVncServer;
+
+class QVncIntegration : public QPlatformIntegration, public QPlatformNativeInterface
+{
+public:
+    QVncIntegration(const QStringList &paramList);
+    ~QVncIntegration();
+
+    void initialize() Q_DECL_OVERRIDE;
+    bool hasCapability(QPlatformIntegration::Capability cap) const Q_DECL_OVERRIDE;
+
+    QPlatformWindow *createPlatformWindow(QWindow *window) const Q_DECL_OVERRIDE;
+    QPlatformBackingStore *createPlatformBackingStore(QWindow *window) const Q_DECL_OVERRIDE;
+
+    QAbstractEventDispatcher *createEventDispatcher() const Q_DECL_OVERRIDE;
+
+    QPlatformFontDatabase *fontDatabase() const Q_DECL_OVERRIDE;
+    QPlatformServices *services() const Q_DECL_OVERRIDE;
+    QPlatformInputContext *inputContext() const Q_DECL_OVERRIDE { return m_inputContext; }
+
+    QPlatformNativeInterface *nativeInterface() const Q_DECL_OVERRIDE;
+
+    QList<QPlatformScreen *> screens() const;
+
+private:
+    mutable QVncServer *m_server;
+    QVncScreen *m_primaryScreen;
+    QPlatformInputContext *m_inputContext;
+    QScopedPointer<QPlatformFontDatabase> m_fontDb;
+    QScopedPointer<QPlatformServices> m_services;
+    QScopedPointer<QPlatformNativeInterface> m_nativeInterface;
+};
+
+QT_END_NAMESPACE
+
+#endif // QVNCINTEGRATION_H
diff --git a/src/plugins/platforms/vnc/qvncscreen.cpp b/src/plugins/platforms/vnc/qvncscreen.cpp
new file mode 100644
index 0000000000..b8bf08259a
--- /dev/null
+++ b/src/plugins/platforms/vnc/qvncscreen.cpp
@@ -0,0 +1,175 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qvncscreen.h"
+#include "qvnc_p.h"
+#include <QtPlatformSupport/private/qfbwindow_p.h>
+
+#include <QtGui/QPainter>
+
+
+QT_BEGIN_NAMESPACE
+
+
+QVncScreen::QVncScreen(const QStringList &args)
+    : mArgs(args)
+{
+    initialize();
+}
+
+QVncScreen::~QVncScreen()
+{
+}
+
+bool QVncScreen::initialize()
+{
+    mGeometry = QRect(0, 0, 1024, 768);
+    mFormat = QImage::Format_ARGB32_Premultiplied;
+    mDepth = 32;
+    mPhysicalSize = QSizeF(mGeometry.width()/96.*25.4, mGeometry.height()/96.*25.4);
+
+    QFbScreen::initializeCompositor();
+    QT_VNC_DEBUG() << "QVncScreen::init" << geometry();
+
+    mCursor = new QFbCursor(this);
+
+    switch (depth()) {
+#if 1//def QT_QWS_DEPTH_32
+    case 32:
+        dirty = new QVncDirtyMapOptimized<quint32>(this);
+        break;
+#endif
+//#if 1//def QT_QWS_DEPTH_24
+//    case 24:
+//        dirty = new QVncDirtyMapOptimized<qrgb888>(this);
+//        break;
+//#endif
+//#if 1//def QT_QWS_DEPTH_24
+//    case 18:
+//        dirty = new QVncDirtyMapOptimized<qrgb666>(this);
+//        break;
+//#endif
+#if 1//def QT_QWS_DEPTH_24
+    case 16:
+        dirty = new QVncDirtyMapOptimized<quint16>(this);
+        break;
+#endif
+//#if 1//def QT_QWS_DEPTH_24
+//    case 15:
+//        dirty = new QVncDirtyMapOptimized<qrgb555>(this);
+//        break;
+//#endif
+//#if 1//def QT_QWS_DEPTH_24
+//    case 12:
+//        dirty = new QVncDirtyMapOptimized<qrgb444>(this);
+//        break;
+//#endif
+#if 1//def QT_QWS_DEPTH_24
+    case 8:
+        dirty = new QVncDirtyMapOptimized<quint8>(this);
+        break;
+#endif
+    default:
+        qWarning("QVNCScreen::initDevice: No support for screen depth %d",
+                 depth());
+        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;
+
+//    // Disable painting if there is only 1 display and nothing is attached to the VNC server
+//    if (!d_ptr->noDisablePainting)
+//        QWSServer::instance()->enablePainting(false);
+
+    return true;
+}
+
+QRegion QVncScreen::doRedraw()
+{
+    QRegion touched = QFbScreen::doRedraw();
+    QT_VNC_DEBUG() << "qvncscreen::doRedraw()" << touched.rectCount();
+
+    if (touched.isEmpty())
+        return touched;
+    dirtyRegion += touched;
+
+    QVector<QRect> rects = touched.rects();
+    for (int i = 0; i < rects.size(); i++) {
+        // ### send to client
+    }
+    vncServer->setDirty();
+    return touched;
+}
+
+// grabWindow() grabs "from the screen" not from the backingstores.
+// In linuxfb's case it will also include the mouse cursor.
+QPixmap QVncScreen::grabWindow(WId wid, int x, int y, int width, int height) const
+{
+    if (!wid) {
+        if (width < 0)
+            width = mScreenImage->width() - x;
+        if (height < 0)
+            height = mScreenImage->height() - y;
+        return QPixmap::fromImage(*mScreenImage).copy(x, y, width, height);
+    }
+
+    QFbWindow *window = windowForId(wid);
+    if (window) {
+        const QRect geom = window->geometry();
+        if (width < 0)
+            width = geom.width() - x;
+        if (height < 0)
+            height = geom.height() - y;
+        QRect rect(geom.topLeft() + QPoint(x, y), QSize(width, height));
+        rect &= window->geometry();
+        return QPixmap::fromImage(*mScreenImage).copy(rect);
+    }
+
+    return QPixmap();
+}
+
+QT_END_NAMESPACE
+
diff --git a/src/plugins/platforms/vnc/qvncscreen.h b/src/plugins/platforms/vnc/qvncscreen.h
new file mode 100644
index 0000000000..bad6910a75
--- /dev/null
+++ b/src/plugins/platforms/vnc/qvncscreen.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVncScreen_H
+#define QVncScreen_H
+
+#include <QtPlatformSupport/private/qfbscreen_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QPainter;
+class QFbCursor;
+class QTcpSocket;
+class QVncServer;
+class QVncDirtyMap;
+
+class QVncScreen : public QFbScreen
+{
+    Q_OBJECT
+public:
+    QVncScreen(const QStringList &args);
+    ~QVncScreen();
+
+    bool initialize();
+
+    QPixmap grabWindow(WId wid, int x, int y, int width, int height) const Q_DECL_OVERRIDE;
+
+    QRegion doRedraw() Q_DECL_OVERRIDE;
+    QImage *image() const { return mScreenImage; }
+
+    void clearDirty() { dirtyRegion = QRegion(); }
+
+    QStringList mArgs;
+
+    qreal dpiX = 96;
+    qreal dpiY = 96;
+    QVncDirtyMap *dirty = 0;
+    QRegion dirtyRegion;
+    int refreshRate = 30;
+    QVncServer *vncServer = 0;
+
+};
+
+QT_END_NAMESPACE
+
+#endif // QVncScreen_H
+
diff --git a/src/plugins/platforms/vnc/vnc.json b/src/plugins/platforms/vnc/vnc.json
new file mode 100644
index 0000000000..6a16b08ca8
--- /dev/null
+++ b/src/plugins/platforms/vnc/vnc.json
@@ -0,0 +1,3 @@
+{
+    "Keys": [ "vnc" ]
+}
diff --git a/src/plugins/platforms/vnc/vnc.pro b/src/plugins/platforms/vnc/vnc.pro
new file mode 100644
index 0000000000..c860ddee28
--- /dev/null
+++ b/src/plugins/platforms/vnc/vnc.pro
@@ -0,0 +1,15 @@
+TARGET = qvnc
+
+PLUGIN_TYPE = platforms
+PLUGIN_CLASS_NAME = QVncIntegrationPlugin
+!equals(TARGET, $$QT_DEFAULT_QPA_PLUGIN): PLUGIN_EXTENDS = -
+load(qt_plugin)
+
+QT += core-private gui-private platformsupport-private network
+
+SOURCES = main.cpp qvncintegration.cpp qvncscreen.cpp qvnc.cpp
+HEADERS = qvncintegration.h qvncscreen.h qvnc_p.h
+
+CONFIG += qpa/genericunixfontdatabase
+
+OTHER_FILES += vnc.json