Integrate the OpenVG graphics system into Qt 4.6

This change also moves the EGL support classes from QtOpenGL to QtGui
so they can be shared between OpenGL and OpenVG.

12 files changed, 901 insertions, 0 deletions

diff --git a/src/plugins/graphicssystems/graphicssystems.pro b/src/plugins/graphicssystems/graphicssystems.pro
index b8216ff..bfdec6a 100644
--- a/src/plugins/graphicssystems/graphicssystems.pro
+++ b/src/plugins/graphicssystems/graphicssystems.pro
@@ -1,2 +1,8 @@
 TEMPLATE = subdirs
 contains(QT_CONFIG, opengl):SUBDIRS += opengl
+contains(QT_CONFIG, openvg):contains(QT_CONFIG, egl):SUBDIRS += openvg
+
+contains(QT_CONFIG, shivavg) {
+    # Only works under X11 at present
+    !win32:!embedded:!mac:SUBDIRS += shivavg
+}
diff --git a/src/plugins/graphicssystems/openvg/main.cpp b/src/plugins/graphicssystems/openvg/main.cpp
new file mode 100644
index 0000000..265ccd3
--- /dev/null
+++ b/src/plugins/graphicssystems/openvg/main.cpp
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qgraphicssystemplugin_p.h>
+#include "qgraphicssystem_vg_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QVGGraphicsSystemPlugin : public QGraphicsSystemPlugin
+{
+public:
+    QStringList keys() const;
+    QGraphicsSystem *create(const QString&);
+};
+
+QStringList QVGGraphicsSystemPlugin::keys() const
+{
+    QStringList list;
+    list << "OpenVG";
+    return list;
+}
+
+QGraphicsSystem* QVGGraphicsSystemPlugin::create(const QString& system)
+{
+    if (system.toLower() == "openvg")
+        return new QVGGraphicsSystem;
+
+    return 0;
+}
+
+Q_EXPORT_PLUGIN2(openvg, QVGGraphicsSystemPlugin)
+
+QT_END_NAMESPACE
diff --git a/src/plugins/graphicssystems/openvg/openvg.pro b/src/plugins/graphicssystems/openvg/openvg.pro
new file mode 100644
index 0000000..0abbfbd
--- /dev/null
+++ b/src/plugins/graphicssystems/openvg/openvg.pro
@@ -0,0 +1,20 @@
+TARGET = qvggraphicssystem
+include(../../qpluginbase.pri)
+
+QT += openvg
+
+QTDIR_build:DESTDIR = $$QT_BUILD_TREE/plugins/graphicssystems
+
+SOURCES = main.cpp qgraphicssystem_vg.cpp
+HEADERS = qgraphicssystem_vg_p.h
+
+target.path += $$[QT_INSTALL_PLUGINS]/graphicssystems
+INSTALLS += target
+
+!isEmpty(QMAKE_INCDIR_OPENVG): INCLUDEPATH += $$QMAKE_INCDIR_OPENVG
+!isEmpty(QMAKE_LIBDIR_OPENVG): LIBS += -L$$QMAKE_LIBDIR_OPENVG
+!isEmpty(QMAKE_LIBS_OPENVG): LIBS += $$QMAKE_LIBS_OPENVG
+
+!isEmpty(QMAKE_INCDIR_EGL): INCLUDEPATH += $$QMAKE_INCDIR_EGL
+!isEmpty(QMAKE_LIBDIR_EGL): LIBS += -L$$QMAKE_LIBDIR_EGL
+!isEmpty(QMAKE_LIBS_EGL): LIBS += $$QMAKE_LIBS_EGL
diff --git a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
new file mode 100644
index 0000000..d975ad7
--- /dev/null
+++ b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgraphicssystem_vg_p.h"
+#include <QtOpenVG/private/qpixmapdata_vg_p.h>
+#include <QtOpenVG/private/qwindowsurface_vg_p.h>
+
+QT_BEGIN_NAMESPACE
+
+QVGGraphicsSystem::QVGGraphicsSystem()
+{
+}
+
+QPixmapData *QVGGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
+{
+#if !defined(QVG_NO_SINGLE_CONTEXT) && !defined(QVG_NO_PIXMAP_DATA)
+    // Pixmaps can use QVGPixmapData; bitmaps must use raster.
+    if (type == QPixmapData::PixmapType)
+        return new QVGPixmapData(type);
+    else
+        return new QRasterPixmapData(type);
+#else
+    return new QRasterPixmapData(type);
+#endif
+}
+
+QWindowSurface *QVGGraphicsSystem::createWindowSurface(QWidget *widget) const
+{
+    return new QVGWindowSurface(widget);
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg_p.h b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg_p.h
new file mode 100644
index 0000000..368f48d
--- /dev/null
+++ b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg_p.h
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSSYSTEM_VG_P_H
+#define QGRAPHICSSYSTEM_VG_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/private/qgraphicssystem_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QVGGraphicsSystem : public QGraphicsSystem
+{
+public:
+    QVGGraphicsSystem();
+
+    QPixmapData *createPixmapData(QPixmapData::PixelType type) const;
+    QWindowSurface *createWindowSurface(QWidget *widget) const;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/plugins/graphicssystems/shivavg/README b/src/plugins/graphicssystems/shivavg/README
new file mode 100644
index 0000000..15ee710
--- /dev/null
+++ b/src/plugins/graphicssystems/shivavg/README
@@ -0,0 +1,8 @@
+
+This graphics system uses ShivaVG (http://sourceforge.net/projects/shivavg)
+to perform OpenVG rendering on X11 systems.  The graphics system name for
+the "-graphicssystem" command-line option is "ShivaVG".
+
+ShivaVG support is experimental, mostly to demonstrate how to integrate
+non-EGL OpenVG engines into the system.  It will probably not produce
+good output.
diff --git a/src/plugins/graphicssystems/shivavg/main.cpp b/src/plugins/graphicssystems/shivavg/main.cpp
new file mode 100644
index 0000000..037bfb2
--- /dev/null
+++ b/src/plugins/graphicssystems/shivavg/main.cpp
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qgraphicssystemplugin_p.h>
+#include "shivavggraphicssystem.h"
+
+QT_BEGIN_NAMESPACE
+
+class ShivaVGGraphicsSystemPlugin : public QGraphicsSystemPlugin
+{
+public:
+    QStringList keys() const;
+    QGraphicsSystem *create(const QString&);
+};
+
+QStringList ShivaVGGraphicsSystemPlugin::keys() const
+{
+    QStringList list;
+    list << "ShivaVG";
+    return list;
+}
+
+QGraphicsSystem* ShivaVGGraphicsSystemPlugin::create(const QString& system)
+{
+    if (system.toLower() == "shivavg")
+        return new ShivaVGGraphicsSystem;
+
+    return 0;
+}
+
+Q_EXPORT_PLUGIN2(shivavg, ShivaVGGraphicsSystemPlugin)
+
+QT_END_NAMESPACE
diff --git a/src/plugins/graphicssystems/shivavg/shivavg.pro b/src/plugins/graphicssystems/shivavg/shivavg.pro
new file mode 100644
index 0000000..68345af
--- /dev/null
+++ b/src/plugins/graphicssystems/shivavg/shivavg.pro
@@ -0,0 +1,16 @@
+TARGET = qshivavggraphicssystem
+include(../../qpluginbase.pri)
+
+QT += openvg
+
+QTDIR_build:DESTDIR = $$QT_BUILD_TREE/plugins/graphicssystems
+
+SOURCES = main.cpp shivavggraphicssystem.cpp shivavgwindowsurface.cpp
+HEADERS = shivavggraphicssystem.h shivavgwindowsurface.h
+
+target.path += $$[QT_INSTALL_PLUGINS]/graphicssystems
+INSTALLS += target
+
+!isEmpty(QMAKE_INCDIR_OPENVG): INCLUDEPATH += $$QMAKE_INCDIR_OPENVG
+!isEmpty(QMAKE_LIBDIR_OPENVG): LIBS += -L$$QMAKE_LIBDIR_OPENVG
+!isEmpty(QMAKE_LIBS_OPENVG): LIBS += $$QMAKE_LIBS_OPENVG
diff --git a/src/plugins/graphicssystems/shivavg/shivavggraphicssystem.cpp b/src/plugins/graphicssystems/shivavg/shivavggraphicssystem.cpp
new file mode 100644
index 0000000..fb60a42
--- /dev/null
+++ b/src/plugins/graphicssystems/shivavg/shivavggraphicssystem.cpp
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "shivavggraphicssystem.h"
+#include "shivavgwindowsurface.h"
+#include <QtGui/private/qpixmap_raster_p.h>
+
+QT_BEGIN_NAMESPACE
+
+ShivaVGGraphicsSystem::ShivaVGGraphicsSystem()
+{
+}
+
+QPixmapData *ShivaVGGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
+{
+    return new QRasterPixmapData(type);
+}
+
+QWindowSurface *ShivaVGGraphicsSystem::createWindowSurface(QWidget *widget) const
+{
+    return new ShivaVGWindowSurface(widget);
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/graphicssystems/shivavg/shivavggraphicssystem.h b/src/plugins/graphicssystems/shivavg/shivavggraphicssystem.h
new file mode 100644
index 0000000..1c9ec70
--- /dev/null
+++ b/src/plugins/graphicssystems/shivavg/shivavggraphicssystem.h
@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SHIVAVGGRAPHICSSYSTEM_H
+#define SHIVAVGGRAPHICSSYSTEM_H
+
+#include <QtGui/private/qgraphicssystem_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class ShivaVGGraphicsSystem : public QGraphicsSystem
+{
+public:
+    ShivaVGGraphicsSystem();
+
+    QPixmapData *createPixmapData(QPixmapData::PixelType type) const;
+    QWindowSurface *createWindowSurface(QWidget *widget) const;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/plugins/graphicssystems/shivavg/shivavgwindowsurface.cpp b/src/plugins/graphicssystems/shivavg/shivavgwindowsurface.cpp
new file mode 100644
index 0000000..bf1f942
--- /dev/null
+++ b/src/plugins/graphicssystems/shivavg/shivavgwindowsurface.cpp
@@ -0,0 +1,370 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#define GL_GLEXT_PROTOTYPES
+#include "shivavgwindowsurface.h"
+#include <QtOpenVG/private/qpaintengine_vg_p.h>
+#if defined(Q_WS_X11)
+#include "private/qt_x11_p.h"
+#include "qx11info_x11.h"
+#include <GL/glx.h>
+
+extern QX11Info *qt_x11Info(const QPaintDevice *pd);
+#endif
+
+// Define this to use framebuffer objects.
+//#define QVG_USE_FBO 1
+
+#include <vg/openvg.h>
+
+QT_BEGIN_NAMESPACE
+
+class QShivaContext
+{
+public:
+    QShivaContext();
+    ~QShivaContext();
+
+    bool makeCurrent(ShivaVGWindowSurfacePrivate *surface);
+    void doneCurrent();
+
+    bool initialized;
+    QSize currentSize;
+    ShivaVGWindowSurfacePrivate *currentSurface;
+};
+
+Q_GLOBAL_STATIC(QShivaContext, shivaContext);
+
+class ShivaVGWindowSurfacePrivate
+{
+public:
+    ShivaVGWindowSurfacePrivate()
+        : isCurrent(false)
+        , needsResize(true)
+        , engine(0)
+#if defined(QVG_USE_FBO)
+        , fbo(0)
+        , texture(0)
+#endif
+#if defined(Q_WS_X11)
+        , drawable(0)
+        , context(0)
+#endif
+    {
+    }
+    ~ShivaVGWindowSurfacePrivate();
+
+    void ensureContext(QWidget *widget);
+
+    QSize size;
+    bool isCurrent;
+    bool needsResize;
+    QVGPaintEngine *engine;
+#if defined(QVG_USE_FBO)
+    GLuint fbo;
+    GLuint texture;
+#endif
+#if defined(Q_WS_X11)
+    GLXDrawable drawable;
+    GLXContext context;
+#endif
+};
+
+QShivaContext::QShivaContext()
+    : initialized(false)
+    , currentSurface(0)
+{
+}
+
+QShivaContext::~QShivaContext()
+{
+    if (initialized)
+        vgDestroyContextSH();
+}
+
+bool QShivaContext::makeCurrent(ShivaVGWindowSurfacePrivate *surface)
+{
+    if (currentSurface)
+        currentSurface->isCurrent = false;
+    surface->isCurrent = true;
+    currentSurface = surface;
+    currentSize = surface->size;
+#if defined(Q_WS_X11)
+    glXMakeCurrent(X11->display, surface->drawable, surface->context);
+#endif
+    if (!initialized) {
+        if (!vgCreateContextSH(currentSize.width(), currentSize.height())) {
+            qWarning("vgCreateContextSH(%d, %d): could not create context", currentSize.width(), currentSize.height());
+            return false;
+        }
+        initialized = true;
+    } else {
+        vgResizeSurfaceSH(currentSize.width(), currentSize.height());
+    }
+#if defined(QVG_USE_FBO)
+    if (surface->fbo)
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, surface->fbo);
+    else
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+#endif
+    return true;
+}
+
+void QShivaContext::doneCurrent()
+{
+    if (currentSurface) {
+        currentSurface->isCurrent = false;
+        currentSurface = 0;
+    }
+#if defined(Q_WS_X11)
+    glXMakeCurrent(X11->display, 0, 0);
+#endif
+}
+
+ShivaVGWindowSurfacePrivate::~ShivaVGWindowSurfacePrivate()
+{
+#if defined(QVG_USE_FBO)
+    if (fbo) {
+        glDeleteTextures(1, &texture);
+        glDeleteFramebuffersEXT(1, &fbo);
+    }
+#endif
+}
+
+void ShivaVGWindowSurfacePrivate::ensureContext(QWidget *widget)
+{
+#if defined(Q_WS_X11)
+    Window win = widget->winId();
+    if (win != drawable) {
+        if (context)
+            glXDestroyContext(X11->display, context);
+        drawable = win;
+    }
+    if (context == 0) {
+        const QX11Info *xinfo = qt_x11Info(widget);
+        int spec[64];
+        int i = 0;
+        spec[i++] = GLX_DOUBLEBUFFER;
+        spec[i++] = GLX_DEPTH_SIZE;
+        spec[i++] = 1;
+        spec[i++] = GLX_STENCIL_SIZE;
+        spec[i++] = 1;
+        spec[i++] = GLX_RGBA;
+        spec[i++] = GLX_RED_SIZE;
+        spec[i++] = 1;
+        spec[i++] = GLX_GREEN_SIZE;
+        spec[i++] = 1;
+        spec[i++] = GLX_BLUE_SIZE;
+        spec[i++] = 1;
+        spec[i++] = GLX_SAMPLE_BUFFERS_ARB;
+        spec[i++] = 1;
+        spec[i++] = GLX_SAMPLES_ARB;
+        spec[i++] = 4;
+        spec[i] = XNone;
+        XVisualInfo *visual = glXChooseVisual
+            (xinfo->display(), xinfo->screen(), spec);
+        context = glXCreateContext(X11->display, visual, 0, True);
+        if (!context)
+            qWarning("glXCreateContext: could not create GL context for VG rendering");
+    }
+#else
+    Q_UNUSED(widget);
+#endif
+#if defined(QVG_USE_FBO)
+    if (needsResize && fbo) {
+#if defined(Q_WS_X11)
+        glXMakeCurrent(X11->display, drawable, context);
+#endif
+        glDeleteTextures(1, &texture);
+        glDeleteFramebuffersEXT(1, &fbo);
+#if defined(Q_WS_X11)
+        glXMakeCurrent(X11->display, 0, 0);
+#endif
+        fbo = 0;
+        texture = 0;
+    }
+    if (!fbo) {
+#if defined(Q_WS_X11)
+        glXMakeCurrent(X11->display, drawable, context);
+#endif
+        glGenFramebuffersEXT(1, &fbo);
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
+
+        glGenTextures(1, &texture);
+        glBindTexture(GL_TEXTURE_2D, texture);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, size.width(), size.height(), 0,
+                     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        glFramebufferTexture2DEXT
+            (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D,
+             texture, 0);
+
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+#if defined(Q_WS_X11)
+        glXMakeCurrent(X11->display, 0, 0);
+#endif
+    }
+#endif
+    needsResize = false;
+}
+
+ShivaVGWindowSurface::ShivaVGWindowSurface(QWidget *window)
+    : QWindowSurface(window), d_ptr(new ShivaVGWindowSurfacePrivate)
+{
+}
+
+ShivaVGWindowSurface::~ShivaVGWindowSurface()
+{
+    if (d_ptr->isCurrent) {
+        shivaContext()->doneCurrent();
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+    }
+#if defined(Q_WS_X11)
+    if (d_ptr->context)
+        glXDestroyContext(X11->display, d_ptr->context);
+#endif
+    delete d_ptr;
+}
+
+QPaintDevice *ShivaVGWindowSurface::paintDevice()
+{
+    d_ptr->ensureContext(window());
+    shivaContext()->makeCurrent(d_ptr);
+    glClearDepth(0.0f);
+    glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+    return this;
+}
+
+void ShivaVGWindowSurface::flush(QWidget *widget, const QRegion &region, const QPoint &offset)
+{
+    Q_UNUSED(region);
+    Q_UNUSED(offset);
+    QWidget *parent = widget->internalWinId() ? widget : widget->nativeParentWidget();
+    d_ptr->ensureContext(parent);
+    QShivaContext *context = shivaContext();
+    if (!d_ptr->isCurrent)
+        context->makeCurrent(d_ptr);
+#if defined(QVG_USE_FBO)
+    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+    if (d_ptr->fbo) {
+        static GLfloat const vertices[][2] = {
+            {-1, -1}, {1, -1}, {1, 1}, {-1, 1}
+        };
+        static GLfloat const texCoords[][2] = {
+            {0, 0}, {1, 0}, {1, 1}, {0, 1}
+        };
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
+        glVertexPointer(2, GL_FLOAT, 0, vertices);
+        glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
+        glBindTexture(GL_TEXTURE_2D, d_ptr->texture);
+        glEnable(GL_TEXTURE_2D);
+        glEnableClientState(GL_VERTEX_ARRAY);
+        glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+        glDisableClientState(GL_VERTEX_ARRAY);
+        glDisable(GL_TEXTURE_2D);
+        glBindTexture(GL_TEXTURE_2D, 0);
+    }
+#endif
+#if defined(Q_WS_X11)
+    glXSwapBuffers(X11->display, d_ptr->drawable);
+#endif
+    context->doneCurrent();
+}
+
+void ShivaVGWindowSurface::setGeometry(const QRect &rect)
+{
+    QWindowSurface::setGeometry(rect);
+    d_ptr->needsResize = true;
+    d_ptr->size = rect.size();
+}
+
+bool ShivaVGWindowSurface::scroll(const QRegion &area, int dx, int dy)
+{
+    return QWindowSurface::scroll(area, dx, dy);
+}
+
+void ShivaVGWindowSurface::beginPaint(const QRegion &region)
+{
+    // Nothing to do here.
+    Q_UNUSED(region);
+}
+
+void ShivaVGWindowSurface::endPaint(const QRegion &region)
+{
+    // Nothing to do here.
+    Q_UNUSED(region);
+}
+
+Q_GLOBAL_STATIC(QVGPaintEngine, sharedPaintEngine);
+
+QPaintEngine *ShivaVGWindowSurface::paintEngine() const
+{
+    if (!d_ptr->engine)
+        d_ptr->engine = sharedPaintEngine();
+    return d_ptr->engine;
+}
+
+// We need to get access to QWidget::metric() from ShivaVGWindowSurface::metric,
+// but it is not a friend of QWidget.  To get around this, we create a
+// fake QX11PaintEngine class, which is a friend.
+class QX11PaintEngine
+{
+public:
+    static int metric(const QWidget *widget, QPaintDevice::PaintDeviceMetric met)
+    {
+        return widget->metric(met);
+    }
+};
+
+int ShivaVGWindowSurface::metric(PaintDeviceMetric met) const
+{
+    return QX11PaintEngine::metric(window(), met);
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/graphicssystems/shivavg/shivavgwindowsurface.h b/src/plugins/graphicssystems/shivavg/shivavgwindowsurface.h
new file mode 100644
index 0000000..5211ba4
--- /dev/null
+++ b/src/plugins/graphicssystems/shivavg/shivavgwindowsurface.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the 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 http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SHIVAVGWINDOWSURFACE_H
+#define SHIVAVGWINDOWSURFACE_H
+
+#include <QtGui/private/qwindowsurface_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class ShivaVGWindowSurfacePrivate;
+
+class ShivaVGWindowSurface : public QWindowSurface, public QPaintDevice
+{
+public:
+    ShivaVGWindowSurface(QWidget *window);
+    virtual ~ShivaVGWindowSurface();
+
+    QPaintDevice *paintDevice();
+    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
+    void setGeometry(const QRect &rect);
+    bool scroll(const QRegion &area, int dx, int dy);
+
+    void beginPaint(const QRegion &region);
+    void endPaint(const QRegion &region);
+
+    QPaintEngine *paintEngine() const;
+
+protected:
+    int metric(PaintDeviceMetric metric) const;
+
+private:
+    ShivaVGWindowSurfacePrivate *d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif