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

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** contained in the Technology Preview License Agreement accompanying

** this package.

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

#ifndef QWINDOWSURFACE_VGEGL_P_H

#define QWINDOWSURFACE_VGEGL_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of the QLibrary class.  This header file may change from

// version to version without notice, or even be removed.

//

// We mean it.

//

#include <QtGui/private/qwindowsurface_p.h>

#include "qvg_p.h"

#if !defined(QT_NO_EGL)

#include <QtGui/private/qegl_p.h>

QT_BEGIN_NAMESPACE

class QWindowSurface;

class Q_OPENVG_EXPORT QVGEGLWindowSurfacePrivate

{

public:

    QVGEGLWindowSurfacePrivate(QWindowSurface *win);

    virtual ~QVGEGLWindowSurfacePrivate();

    QVGPaintEngine *paintEngine();

    virtual QEglContext *ensureContext(QWidget *widget) = 0;

    virtual void beginPaint(QWidget *widget) = 0;

    virtual void endPaint

        (QWidget *widget, const QRegion& region, QImage *image = 0) = 0;

    virtual VGImage surfaceImage() const;

    virtual QSize surfaceSize() const = 0;

private:

    QVGPaintEngine *engine;

protected:

    QWindowSurface *winSurface;

    void destroyPaintEngine();

    QSize windowSurfaceSize(QWidget *widget) const;

};

#if defined(EGL_OPENVG_IMAGE) && !defined(QVG_NO_SINGLE_CONTEXT)

#define QVG_VGIMAGE_BACKBUFFERS 1

class Q_OPENVG_EXPORT QVGEGLWindowSurfaceVGImage : public QVGEGLWindowSurfacePrivate

{

public:

    QVGEGLWindowSurfaceVGImage(QWindowSurface *win);

    virtual ~QVGEGLWindowSurfaceVGImage();

    QEglContext *ensureContext(QWidget *widget);

    void beginPaint(QWidget *widget);

    void endPaint(QWidget *widget, const QRegion& region, QImage *image);

    VGImage surfaceImage() const;

    QSize surfaceSize() const { return size; }

protected:

    QEglContext *context;

    VGImage backBuffer;

    EGLSurface backBufferSurface;

    bool recreateBackBuffer;

    bool isPaintingActive;

    QSize size;

    EGLSurface windowSurface;

    EGLSurface mainSurface() const;

};

#endif // EGL_OPENVG_IMAGE

class Q_OPENVG_EXPORT QVGEGLWindowSurfaceDirect : public QVGEGLWindowSurfacePrivate

{

public:

    QVGEGLWindowSurfaceDirect(QWindowSurface *win);

    virtual ~QVGEGLWindowSurfaceDirect();

    QEglContext *ensureContext(QWidget *widget);

    void beginPaint(QWidget *widget);

    void endPaint(QWidget *widget, const QRegion& region, QImage *image);

    QSize surfaceSize() const { return size; }

protected:

    QEglContext *context;

    QSize size;

    bool isPaintingActive;

    bool needToSwap;

    EGLSurface windowSurface;

};

QT_END_NAMESPACE

#endif // !QT_NO_EGL

#endif // QWINDOWSURFACE_VGEGL_P_H