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diff --git a/src/platformsupport/eglconvenience/qeglplatformscreen.cpp b/src/platformsupport/eglconvenience/qeglplatformscreen.cpp
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+++ b/src/platformsupport/eglconvenience/qeglplatformscreen.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 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
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** 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
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeglcompositor_p.h"
+#include "qeglplatformscreen_p.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QEGLPlatformScreen
+    \brief Base class for EGL-based platform screen implementations.
+    \since 5.2
+    \internal
+    \ingroup qpa
+
+    This class provides a lightweight base for QPlatformScreen
+    implementations. It covers basic window stack management which is
+    necessary when compositing multiple raster (widget-based) windows
+    together into one single native surface.
+
+    Reimplementing the virtuals are essential when using
+    QEGLPlatformBackingStore. The context and the window returned from
+    these are the ones that are used when compositing the textures
+    generated from the raster (widget) based windows.
+
+    \note It is up to the QEGLPlatformWindow subclasses to use the
+    functions, like addWindow(), removeWindow(), etc., provided here.
+ */
+
+QEGLPlatformScreen::QEGLPlatformScreen(EGLDisplay dpy)
+    : m_dpy(dpy)
+{
+}
+
+QEGLPlatformScreen::~QEGLPlatformScreen()
+{
+    QEGLCompositor::destroy();
+}
+
+void QEGLPlatformScreen::addWindow(QEGLPlatformWindow *window)
+{
+    if (!m_windows.contains(window)) {
+        m_windows.append(window);
+        topWindowChanged(window);
+    }
+}
+
+void QEGLPlatformScreen::removeWindow(QEGLPlatformWindow *window)
+{
+    m_windows.removeOne(window);
+    if (!m_windows.isEmpty())
+        topWindowChanged(m_windows.last());
+}
+
+void QEGLPlatformScreen::moveToTop(QEGLPlatformWindow *window)
+{
+    m_windows.removeOne(window);
+    m_windows.append(window);
+    topWindowChanged(window);
+}
+
+void QEGLPlatformScreen::changeWindowIndex(QEGLPlatformWindow *window, int newIdx)
+{
+    int idx = m_windows.indexOf(window);
+    if (idx != -1 && idx != newIdx) {
+        m_windows.move(idx, newIdx);
+        if (newIdx == m_windows.size() - 1)
+            topWindowChanged(m_windows.last());
+    }
+}
+
+QT_END_NAMESPACE