src/gui/text/qtextcursor_p.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 19 Feb 2010 23:40:16 +0200
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/****************************************************************************
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**
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** Copyright (C) 2010 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 QTEXTCURSOR_P_H
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#define QTEXTCURSOR_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 for the convenience
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// of other Qt classes.  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 "qtextcursor.h"
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#include "qtextdocument.h"
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#include "qtextdocument_p.h"
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#include <private/qtextformat_p.h>
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#include "qtextobject.h"
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QT_BEGIN_NAMESPACE
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class QTextCursorPrivate : public QSharedData
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{
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public:
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    QTextCursorPrivate(QTextDocumentPrivate *p);
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    QTextCursorPrivate(const QTextCursorPrivate &rhs);
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    ~QTextCursorPrivate();
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    enum AdjustResult { CursorMoved, CursorUnchanged };
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    AdjustResult adjustPosition(int positionOfChange, int charsAddedOrRemoved, QTextUndoCommand::Operation op);
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    void adjustCursor(QTextCursor::MoveOperation m);
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    void remove();
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    void clearCells(QTextTable *table, int startRow, int startCol, int numRows, int numCols, QTextUndoCommand::Operation op);
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    inline bool setPosition(int newPosition) {
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        Q_ASSERT(newPosition >= 0 && newPosition < priv->length());
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        bool moved = position != newPosition;
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        if (moved) {
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            position = newPosition;
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            currentCharFormat = -1;
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        }
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        return moved;
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    }
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    void setX();
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    bool canDelete(int pos) const;
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    void insertBlock(const QTextBlockFormat &format, const QTextCharFormat &charFormat);
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    bool movePosition(QTextCursor::MoveOperation op, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);
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    inline QTextBlock block() const
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        { return QTextBlock(priv, priv->blockMap().findNode(position)); }
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    inline QTextBlockFormat blockFormat() const
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        { return block().blockFormat(); }
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    QTextLayout *blockLayout(QTextBlock &block) const;
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    QTextTable *complexSelectionTable() const;
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    void selectedTableCells(int *firstRow, int *numRows, int *firstColumn, int *numColumns) const;
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    void setBlockCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
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    void setBlockFormat(const QTextBlockFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
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    void setCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
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    void aboutToRemoveCell(int from, int to);
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    QTextDocumentPrivate *priv;
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    qreal x;
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    int position;
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    int anchor;
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    int adjusted_anchor;
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    int currentCharFormat;
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    bool visualNavigation;
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};
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QT_END_NAMESPACE
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#endif // QTEXTCURSOR_P_H