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diff --git a/src/declarative/scenegraph/qsgcontext_p.h b/src/declarative/scenegraph/qsgcontext_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSGCONTEXT_H
+#define QSGCONTEXT_H
+
+#include <QObject>
+#include <qabstractanimation.h>
+
+#include "qsgnode.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+class QSGContextPrivate;
+class QSGRectangleNode;
+class QSGImageNode;
+class QSGGlyphNode;
+class QSGRenderer;
+
+class QSGTexture;
+class QSGMaterial;
+class QSGMaterialShader;
+class QSGEngine;
+
+class QGLContext;
+
+class Q_DECLARATIVE_EXPORT QSGContext : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QSGContext)
+
+public:
+    explicit QSGContext(QObject *parent = 0);
+    ~QSGContext();
+
+    virtual void initialize(QGLContext *context);
+
+    QSGRenderer *renderer() const;
+
+    void setRootNode(QSGRootNode *node);
+    QSGRootNode *rootNode() const;
+
+    QSGEngine *engine() const;
+    QGLContext *glContext() const;
+
+    bool isReady() const;
+
+    QSGMaterialShader *prepareMaterial(QSGMaterial *material);
+
+    virtual void renderNextFrame();
+
+    virtual QSGRectangleNode *createRectangleNode();
+    virtual QSGImageNode *createImageNode();
+    virtual QSGGlyphNode *createGlyphNode();
+    virtual QSGRenderer *createRenderer();
+
+    virtual bool canDecodeImageToTexture() const;
+    virtual QSGTexture *decodeImageToTexture(QIODevice *dev,
+                                                     QSize *size,
+                                                     const QSize &requestSize);
+    virtual QSGTexture *createTexture(const QImage &image = QImage()) const;
+
+    static QSGContext *createDefaultContext();
+
+    void schdelueTextureForCleanup(QSGTexture *texture);
+    void cleanupTextures();
+
+    void setFlashModeEnabled(bool enabled);
+    bool isFlashModeEnabled() const;
+
+    void setRenderAlpha(qreal renderAlpha);
+    qreal renderAlpha() const;
+
+signals:
+    void ready();
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QSGCONTEXT_H