/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtOpenVG module of the Qt Toolkit.

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** 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

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** 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

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** $QT_END_LICENSE$

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****************************************************************************/

#ifndef QVG_P_H

#define QVG_P_H

#include "qvg.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/qimage.h>

#if !defined(QT_NO_EGL)

#include <QtGui/private/qegl_p.h>

#endif

QT_BEGIN_NAMESPACE

class QVGPaintEngine;

#if !defined(QT_NO_EGL)

class QEglContext;

// Create an EGL context, but don't bind it to a surface.  If single-context

// mode is enabled, this will return the previously-created context.

Q_OPENVG_EXPORT QEglContext *qt_vg_create_context(QPaintDevice *device);

// Destroy an EGL context that was created by qt_vg_create_context().

// If single-context mode is enabled, this will decrease the reference count.

Q_OPENVG_EXPORT void qt_vg_destroy_context(QEglContext *context);

// Return the shared pbuffer surface that can be made current to

// destroy VGImage objects when there is no other surface available.

Q_OPENVG_EXPORT EGLSurface qt_vg_shared_surface(void);

// Convert the configuration format in a context to a VG or QImage format.

Q_OPENVG_EXPORT VGImageFormat qt_vg_config_to_vg_format(QEglContext *context);

Q_OPENVG_EXPORT QImage::Format qt_vg_config_to_image_format(QEglContext *context);

#endif

// Create a paint engine.  Returns the common engine in single-context mode.

Q_OPENVG_EXPORT QVGPaintEngine *qt_vg_create_paint_engine(void);

// Destroy a paint engine.  Does nothing in single-context mode.

Q_OPENVG_EXPORT void qt_vg_destroy_paint_engine(QVGPaintEngine *engine);

// Convert between QImage and VGImage format values.

Q_OPENVG_EXPORT VGImageFormat qt_vg_image_to_vg_format(QImage::Format format);

QT_END_NAMESPACE

#endif