Long live Qt 4.5!

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diff --git a/src/gui/graphicsview/qgraphicswidget_p.h b/src/gui/graphicsview/qgraphicswidget_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 QGRAPHICSWIDGET_P_H
+#define QGRAPHICSWIDGET_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 <private/qobject_p.h>
+#include "qgraphicsitem_p.h"
+#include "qgraphicswidget.h"
+#include <QtGui/qfont.h>
+#include <QtGui/qpalette.h>
+#include <QtGui/qsizepolicy.h>
+#include <QtGui/qstyle.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGraphicsLayout;
+class QStyleOptionTitleBar;
+
+#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
+
+class Q_GUI_EXPORT QGraphicsWidgetPrivate : public QGraphicsItemPrivate
+{
+    Q_DECLARE_PUBLIC(QGraphicsWidget)
+public:
+    QGraphicsWidgetPrivate()
+        : leftMargin(0),
+          topMargin(0),
+          rightMargin(0),
+          bottomMargin(0),
+          leftLayoutItemMargin(0),
+          topLayoutItemMargin(0),
+          rightLayoutItemMargin(0),
+          bottomLayoutItemMargin(0),
+          layout(0),
+          inheritedPaletteResolveMask(0),
+          inheritedFontResolveMask(0),
+          inSetGeometry(0),
+          focusPolicy(Qt::NoFocus),
+          focusNext(0),
+          focusPrev(0),
+          focusChild(0),
+          windowFlags(0),
+          hoveredSubControl(QStyle::SC_None),
+          grabbedSection(Qt::NoSection),
+          buttonMouseOver(false),
+          buttonSunken(false),
+          setWindowFrameMargins(false),
+          leftWindowFrameMargin(0),
+          topWindowFrameMargin(0),
+          rightWindowFrameMargin(0),
+          bottomWindowFrameMargin(0)
+    { }
+
+    void init(QGraphicsItem *parentItem, Qt::WindowFlags wFlags);
+    qreal titleBarHeight(const QStyleOptionTitleBar &options) const;
+
+    // Margins
+    qreal leftMargin;
+    qreal topMargin;
+    qreal rightMargin;
+    qreal bottomMargin;
+    QRectF contentsRect;
+
+    // Layout item margins
+    void getLayoutItemMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const;
+    void setLayoutItemMargins(qreal left, qreal top, qreal right, qreal bottom);
+    void setLayoutItemMargins(QStyle::SubElement element, const QStyleOption *opt = 0);
+
+    void fixFocusChainBeforeReparenting(QGraphicsWidget *newParent, QGraphicsScene *newScene = 0);
+    void setLayout_helper(QGraphicsLayout *l);
+
+    qreal leftLayoutItemMargin;
+    qreal topLayoutItemMargin;
+    qreal rightLayoutItemMargin;
+    qreal bottomLayoutItemMargin;
+
+    // Layouts
+    QGraphicsLayout *layout;
+    void setLayoutDirection_helper(Qt::LayoutDirection direction);
+    void resolveLayoutDirection();
+
+    // Style
+    QPalette palette;
+    uint inheritedPaletteResolveMask;
+    void setPalette_helper(const QPalette &palette);
+    void resolvePalette(uint inheritedMask);
+    void updatePalette(const QPalette &palette);
+    QPalette naturalWidgetPalette() const;
+    QFont font;
+    uint inheritedFontResolveMask;
+    void setFont_helper(const QFont &font);
+    void resolveFont(uint inheritedMask);
+    void updateFont(const QFont &font);
+    QFont naturalWidgetFont() const;
+
+    // Window specific
+    void initStyleOptionTitleBar(QStyleOptionTitleBar *option);
+    void adjustWindowFlags(Qt::WindowFlags *wFlags);
+    void windowFrameMouseReleaseEvent(QGraphicsSceneMouseEvent *event);
+    void windowFrameMousePressEvent(QGraphicsSceneMouseEvent *event);
+    void windowFrameMouseMoveEvent(QGraphicsSceneMouseEvent *event);
+    void windowFrameHoverMoveEvent(QGraphicsSceneHoverEvent *event);
+    void windowFrameHoverLeaveEvent(QGraphicsSceneHoverEvent *event);
+    bool hasDecoration() const;
+
+    // State
+    inline int attributeToBitIndex(Qt::WidgetAttribute att) const
+    {
+        int bit = -1;
+        switch (att) {
+        case Qt::WA_SetLayoutDirection: bit = 0; break;
+        case Qt::WA_RightToLeft: bit = 1; break;
+        case Qt::WA_SetStyle: bit = 2; break;
+        case Qt::WA_Resized: bit = 3; break;
+        case Qt::WA_DeleteOnClose: bit = 4; break;
+        case Qt::WA_NoSystemBackground: bit = 5; break;
+        case Qt::WA_OpaquePaintEvent: bit = 6; break;
+        case Qt::WA_SetPalette: bit = 7; break;
+        case Qt::WA_SetFont: bit = 8; break;
+        case Qt::WA_WindowPropagation: bit = 9; break;
+        default: break;
+        }
+        return bit;
+    }
+    inline void setAttribute(Qt::WidgetAttribute att, bool value)
+    {
+        int bit = attributeToBitIndex(att);
+        if (bit == -1) {
+            qWarning("QGraphicsWidget::setAttribute: unsupported attribute %d", int(att));
+            return;
+        }
+        if (value)
+            attributes |= (1 << bit);
+        else
+            attributes &= ~(1 << bit);
+    }
+    inline bool testAttribute(Qt::WidgetAttribute att) const
+    {
+        int bit = attributeToBitIndex(att);
+        if (bit == -1)
+            return false;
+        return (attributes & (1 << bit)) != 0;
+    }
+    quint32 attributes : 10;
+    quint32 inSetGeometry : 1;
+
+    // Focus
+    Qt::FocusPolicy focusPolicy;
+    QGraphicsWidget *focusNext;
+    QGraphicsWidget *focusPrev;
+    QGraphicsWidget *focusChild;
+    void setFocusWidget();
+    void clearFocusWidget();
+
+    // Windows
+    Qt::WindowFlags windowFlags;
+    QString windowTitle;
+    QStyle::SubControl hoveredSubControl;
+    Qt::WindowFrameSection grabbedSection;
+    uint buttonMouseOver : 1;
+    uint buttonSunken : 1;
+    QPointF mouseDelta; // to compensate for small error when interactively resizing
+    QRectF startGeometry;
+    QRect buttonRect;
+
+    bool setWindowFrameMargins;
+    qreal leftWindowFrameMargin;
+    qreal topWindowFrameMargin;
+    qreal rightWindowFrameMargin;
+    qreal bottomWindowFrameMargin;
+
+#ifndef QT_NO_ACTION
+    QList<QAction *> actions;
+#endif
+};
+
+#endif //!defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
+
+QT_END_NAMESPACE
+
+#endif //QGRAPHICSWIDGET_P_H
+