/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QSURFACE_H
#define QSURFACE_H

#include <QtGui/qtguiglobal.h>
#include <QtCore/qnamespace.h>
#include <QtGui/qsurfaceformat.h>
#include <QtCore/qmetatype.h>
#include <QtCore/qsize.h>

QT_BEGIN_NAMESPACE


class QPlatformSurface;

class QSurfacePrivate;

class Q_GUI_EXPORT QSurface
{
    Q_GADGET
public:
    enum SurfaceClass {
        Window,
        Offscreen
    };
    Q_ENUM(SurfaceClass)

    enum SurfaceType {
        RasterSurface,
        OpenGLSurface,
        RasterGLSurface,
        OpenVGSurface,
        VulkanSurface,
        MetalSurface
    };
    Q_ENUM(SurfaceType)

    virtual ~QSurface();

    SurfaceClass surfaceClass() const;

    virtual QSurfaceFormat format() const = 0;
    virtual QPlatformSurface *surfaceHandle() const = 0;

    virtual SurfaceType surfaceType() const = 0;
    bool supportsOpenGL() const;

    virtual QSize size() const = 0;

protected:
    explicit QSurface(SurfaceClass type);

    SurfaceClass m_type;

    QSurfacePrivate *m_reserved;
};

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QSurface*)

#endif //QSURFACE_H