/****************************************************************************
**
** Copyright (C) 2011 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the 
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
** 
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
****************************************************************************/

#ifndef QSCREENEGL_P_H
#define QSCREENEGL_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 QScreenEGL class.  This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//

#include <QtGui/QScreen>
#include <QtOpenGL/qgl.h>
#if defined(QT_OPENGL_ES_2)
#include <EGL/egl.h>
#else
#include <GLES/egl.h>
#endif
#if !defined(EGL_VERSION_1_3) && !defined(QEGL_NATIVE_TYPES_DEFINED)
#undef EGLNativeWindowType
#undef EGLNativePixmapType
#undef EGLNativeDisplayType
typedef NativeWindowType EGLNativeWindowType;
typedef NativePixmapType EGLNativePixmapType;
typedef NativeDisplayType EGLNativeDisplayType;
#define QEGL_NATIVE_TYPES_DEFINED 1
#endif

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(OpenGL)

class QGLScreenPrivate;

class Q_OPENGL_EXPORT QGLScreenSurfaceFunctions
{
public:
    virtual bool createNativeWindow(QWidget *widget, EGLNativeWindowType *native);
    virtual bool createNativePixmap(QPixmap *pixmap, EGLNativePixmapType *native);
    virtual bool createNativeImage(QImage *image, EGLNativePixmapType *native);
};

class Q_OPENGL_EXPORT QGLScreen : public QScreen
{
    Q_DECLARE_PRIVATE(QGLScreen)
public:
    QGLScreen(int displayId);
    virtual ~QGLScreen();

    enum Option
    {
        NoOptions       = 0,
        NativeWindows   = 1,
        NativePixmaps   = 2,
        NativeImages    = 4,
        Overlays        = 8
    };
    Q_DECLARE_FLAGS(Options, Option)

    QGLScreen::Options options() const;

    virtual bool chooseContext(QGLContext *context, const QGLContext *shareContext);
    virtual bool hasOpenGL() = 0;

    QGLScreenSurfaceFunctions *surfaceFunctions() const;

protected:
    void setOptions(QGLScreen::Options value);
    void setSurfaceFunctions(QGLScreenSurfaceFunctions *functions);

private:
    QGLScreenPrivate *d_ptr;
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QGLScreen::Options)

QT_END_NAMESPACE

QT_END_HEADER

#endif // QSCREENEGL_P_H
