/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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** 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
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#include <QtGui/qpaintdevice.h>
#include <QtGui/qpixmap.h>
#include <QtGui/qwidget.h>

#include "qegl_p.h"
#include "qeglcontext_p.h"

#if !defined(QT_NO_EGL)

#include <qscreen_qws.h>
#include <qscreenproxy_qws.h>
#include <qapplication.h>
#include <qdesktopwidget.h>

QT_BEGIN_NAMESPACE

static QScreen *screenForDevice(QPaintDevice *device)
{
    QScreen *screen = qt_screen;
    if (!screen)
        return 0;
    if (screen->classId() == QScreen::MultiClass) {
        int screenNumber;
        if (device && device->devType() == QInternal::Widget)
            screenNumber = qApp->desktop()->screenNumber(static_cast<QWidget *>(device));
        else
            screenNumber = 0;
        screen = screen->subScreens()[screenNumber];
    }
    while (screen->classId() == QScreen::ProxyClass ||
           screen->classId() == QScreen::TransformedClass) {
        screen = static_cast<QProxyScreen *>(screen)->screen();
    }
    return screen;
}

// Set pixel format and other properties based on a paint device.
void QEglProperties::setPaintDeviceFormat(QPaintDevice *dev)
{
    if (!dev)
        return;

    // Find the QGLScreen for this paint device.
    QScreen *screen = screenForDevice(dev);
    if (!screen)
        return;
    int devType = dev->devType();
    if (devType == QInternal::Image)
        setPixelFormat(static_cast<QImage *>(dev)->format());
    else
        setPixelFormat(screen->pixelFormat());
}

EGLNativeDisplayType QEgl::nativeDisplay()
{
    return  EGLNativeDisplayType(EGL_DEFAULT_DISPLAY);
}

EGLNativeWindowType QEgl::nativeWindow(QWidget* widget)
{
    return (EGLNativeWindowType)(widget->winId()); // Might work
}

EGLNativePixmapType QEgl::nativePixmap(QPixmap*)
{
    qWarning("QEgl: EGL pixmap surfaces not supported on QWS");
    return (EGLNativePixmapType)0;
}


QT_END_NAMESPACE

#endif // !QT_NO_EGL