Long live Qt 4.5!

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diff --git a/src/gui/graphicsview/qgraphicsproxywidget_p.h b/src/gui/graphicsview/qgraphicsproxywidget_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSPROXYWIDGET_P_H
+#define QGRAPHICSPROXYWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp.  This header
+// file may change from version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qgraphicsproxywidget.h"
+#include "private/qgraphicswidget_p.h"
+
+#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
+
+QT_BEGIN_NAMESPACE
+
+class QGraphicsProxyWidgetPrivate : public QGraphicsWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QGraphicsProxyWidget)
+public:
+    QGraphicsProxyWidgetPrivate()
+        : dragDropWidget(0),
+          posChangeMode(NoMode),
+          sizeChangeMode(NoMode),
+          visibleChangeMode(NoMode),
+          enabledChangeMode(NoMode),
+          styleChangeMode(NoMode),
+          paletteChangeMode(NoMode),
+          focusFromWidgetToProxy(0)
+    { }
+    void init();
+    void sendWidgetMouseEvent(QGraphicsSceneMouseEvent *event);
+    void sendWidgetMouseEvent(QGraphicsSceneHoverEvent *event);
+    void sendWidgetKeyEvent(QKeyEvent *event);
+    void setWidget_helper(QWidget *widget, bool autoShow);
+
+    QWidget *findFocusChild(QWidget *child, bool next) const;
+    void removeSubFocusHelper(QWidget *widget, Qt::FocusReason reason);
+
+    // ### Qt 5: Remove. Workaround for reimplementation added after Qt 4.4.
+    QVariant inputMethodQueryHelper(Qt::InputMethodQuery query) const;
+
+    void _q_removeWidgetSlot();
+
+    void embedSubWindow(QWidget *);
+    void unembedSubWindow(QWidget *);
+
+    bool isProxyWidget() const;
+
+    QPointer<QWidget> widget;
+    QPointer<QWidget> lastWidgetUnderMouse;
+    QPointer<QWidget> embeddedMouseGrabber;
+    QWidget *dragDropWidget;
+    Qt::DropAction lastDropAction;
+
+    void updateWidgetGeometryFromProxy();
+    void updateProxyGeometryFromWidget();
+
+    QPointF mapToReceiver(const QPointF &pos, const QWidget *receiver) const;
+
+    enum ChangeMode {
+        NoMode,
+        ProxyToWidgetMode,
+        WidgetToProxyMode
+    };
+    quint32 posChangeMode : 2;
+    quint32 sizeChangeMode : 2;
+    quint32 visibleChangeMode : 2;
+    quint32 enabledChangeMode : 2;
+    quint32 styleChangeMode : 2;
+    quint32 paletteChangeMode : 2;
+    quint32 focusFromWidgetToProxy : 1;
+};
+
+QT_END_NAMESPACE
+
+#endif
+
+#endif