src/gui/text/qtextdocumentlayout_p.h
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QTEXTDOCUMENTLAYOUT_P_H
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#define QTEXTDOCUMENTLAYOUT_P_H
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//
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//  W A R N I N G
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//  -------------
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//
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// This file is not part of the Qt API.  It exists purely as an
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// implementation detail.  This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include "QtGui/qabstracttextdocumentlayout.h"
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#include "QtGui/qtextoption.h"
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#include "QtGui/qtextobject.h"
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QT_BEGIN_NAMESPACE
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class QTextListFormat;
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class QTextDocumentLayoutPrivate;
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class Q_AUTOTEST_EXPORT QTextDocumentLayout : public QAbstractTextDocumentLayout
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{
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    Q_DECLARE_PRIVATE(QTextDocumentLayout)
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    Q_OBJECT
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    Q_PROPERTY(int cursorWidth READ cursorWidth WRITE setCursorWidth)
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    Q_PROPERTY(qreal idealWidth READ idealWidth)
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    Q_PROPERTY(bool contentHasAlignment READ contentHasAlignment)
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public:
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    explicit QTextDocumentLayout(QTextDocument *doc);
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    // from the abstract layout
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    void draw(QPainter *painter, const PaintContext &context);
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    int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const;
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    int pageCount() const;
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    QSizeF documentSize() const;
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    void setCursorWidth(int width);
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    int cursorWidth() const;
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    // internal, to support the ugly FixedColumnWidth wordwrap mode in QTextEdit
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    void setFixedColumnWidth(int width);
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    // internal for QTextEdit's NoWrap mode
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    void setViewport(const QRectF &viewport);
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    virtual QRectF frameBoundingRect(QTextFrame *frame) const;
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    virtual QRectF blockBoundingRect(const QTextBlock &block) const;
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    // ####
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    int layoutStatus() const;
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    int dynamicPageCount() const;
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    QSizeF dynamicDocumentSize() const;
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    void ensureLayouted(qreal);
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    qreal idealWidth() const;
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    bool contentHasAlignment() const;
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protected:
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    void documentChanged(int from, int oldLength, int length);
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    void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
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    void positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
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    void drawInlineObject(QPainter *p, const QRectF &rect, QTextInlineObject item,
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                          int posInDocument, const QTextFormat &format);
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    virtual void timerEvent(QTimerEvent *e);
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private:
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    QRectF doLayout(int from, int oldLength, int length);
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    void layoutFinished();
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};
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QT_END_NAMESPACE
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#endif // QTEXTDOCUMENTLAYOUT_P_H