/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying

** this package.

**

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QTEXTDOCUMENTLAYOUT_P_H

#define QTEXTDOCUMENTLAYOUT_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "QtGui/qabstracttextdocumentlayout.h"

#include "QtGui/qtextoption.h"

#include "QtGui/qtextobject.h"

QT_BEGIN_NAMESPACE

class QTextListFormat;

class QTextDocumentLayoutPrivate;

class Q_AUTOTEST_EXPORT QTextDocumentLayout : public QAbstractTextDocumentLayout

{

    Q_DECLARE_PRIVATE(QTextDocumentLayout)

    Q_OBJECT

    Q_PROPERTY(int cursorWidth READ cursorWidth WRITE setCursorWidth)

    Q_PROPERTY(qreal idealWidth READ idealWidth)

    Q_PROPERTY(bool contentHasAlignment READ contentHasAlignment)

public:

    explicit QTextDocumentLayout(QTextDocument *doc);

    // from the abstract layout

    void draw(QPainter *painter, const PaintContext &context);

    int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const;

    int pageCount() const;

    QSizeF documentSize() const;

    void setCursorWidth(int width);

    int cursorWidth() const;

    // internal, to support the ugly FixedColumnWidth wordwrap mode in QTextEdit

    void setFixedColumnWidth(int width);

    // internal for QTextEdit's NoWrap mode

    void setViewport(const QRectF &viewport);

    virtual QRectF frameBoundingRect(QTextFrame *frame) const;

    virtual QRectF blockBoundingRect(const QTextBlock &block) const;

    // ####

    int layoutStatus() const;

    int dynamicPageCount() const;

    QSizeF dynamicDocumentSize() const;

    void ensureLayouted(qreal);

    qreal idealWidth() const;

    bool contentHasAlignment() const;

protected:

    void documentChanged(int from, int oldLength, int length);

    void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);

    void positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);

    void drawInlineObject(QPainter *p, const QRectF &rect, QTextInlineObject item,

                          int posInDocument, const QTextFormat &format);

    virtual void timerEvent(QTimerEvent *e);

private:

    QRectF doLayout(int from, int oldLength, int length);

    void layoutFinished();

};

QT_END_NAMESPACE

#endif // QTEXTDOCUMENTLAYOUT_P_H