Long live Qt 4.5!

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diff --git a/src/gui/text/qabstracttextdocumentlayout.h b/src/gui/text/qabstracttextdocumentlayout.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 QABSTRACTTEXTDOCUMENTLAYOUT_H
+#define QABSTRACTTEXTDOCUMENTLAYOUT_H
+
+#include <QtCore/qobject.h>
+#include <QtGui/qtextlayout.h>
+#include <QtGui/qtextdocument.h>
+#include <QtGui/qtextcursor.h>
+#include <QtGui/qpalette.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QAbstractTextDocumentLayoutPrivate;
+class QTextBlock;
+class QTextObjectInterface;
+class QTextFrame;
+
+class Q_GUI_EXPORT QAbstractTextDocumentLayout : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QAbstractTextDocumentLayout)
+
+public:
+    explicit QAbstractTextDocumentLayout(QTextDocument *doc);
+    ~QAbstractTextDocumentLayout();
+
+    struct Selection
+    {
+        QTextCursor cursor;
+        QTextCharFormat format;
+    };
+
+    struct PaintContext
+    {
+        PaintContext()
+            : cursorPosition(-1)
+            {}
+        int cursorPosition;
+        QPalette palette;
+        QRectF clip;
+        QVector<Selection> selections;
+    };
+
+    virtual void draw(QPainter *painter, const PaintContext &context) = 0;
+    virtual int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const = 0;
+    QString anchorAt(const QPointF& pos) const;
+
+    virtual int pageCount() const = 0;
+    virtual QSizeF documentSize() const = 0;
+
+    virtual QRectF frameBoundingRect(QTextFrame *frame) const = 0;
+    virtual QRectF blockBoundingRect(const QTextBlock &block) const = 0;
+
+    void setPaintDevice(QPaintDevice *device);
+    QPaintDevice *paintDevice() const;
+
+    QTextDocument *document() const;
+
+    void registerHandler(int objectType, QObject *component);
+    QTextObjectInterface *handlerForObject(int objectType) const;
+
+Q_SIGNALS:
+    void update(const QRectF & = QRectF(0., 0., 1000000000., 1000000000.));
+    void updateBlock(const QTextBlock &block);
+    void documentSizeChanged(const QSizeF &newSize);
+    void pageCountChanged(int newPages);
+
+protected:
+    QAbstractTextDocumentLayout(QAbstractTextDocumentLayoutPrivate &, QTextDocument *);
+
+    virtual void documentChanged(int from, int charsRemoved, int charsAdded) = 0;
+
+    virtual void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
+    virtual void positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
+    virtual void drawInlineObject(QPainter *painter, const QRectF &rect, QTextInlineObject object, int posInDocument, const QTextFormat &format);
+
+    int formatIndex(int pos);
+    QTextCharFormat format(int pos);
+
+private:
+    friend class QTextDocument;
+    friend class QTextDocumentPrivate;
+    friend class QTextEngine;
+    friend class QTextLayout;
+    friend class QTextLine;
+    Q_PRIVATE_SLOT(d_func(), void _q_handlerDestroyed(QObject *obj))
+    Q_PRIVATE_SLOT(d_func(), int _q_dynamicPageCountSlot())
+    Q_PRIVATE_SLOT(d_func(), QSizeF _q_dynamicDocumentSizeSlot())
+};
+
+class Q_GUI_EXPORT QTextObjectInterface
+{
+public:
+    virtual ~QTextObjectInterface() {}
+    virtual QSizeF intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format) = 0;
+    virtual void drawObject(QPainter *painter, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format) = 0;
+};
+
+Q_DECLARE_INTERFACE(QTextObjectInterface, "com.trolltech.Qt.QTextObjectInterface")
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QABSTRACTTEXTDOCUMENTLAYOUT_H