src/gui/text/qtextcursor_p.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtGui module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
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    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #ifndef QTEXTCURSOR_P_H
       
    43 #define QTEXTCURSOR_P_H
       
    44 
       
    45 //
       
    46 //  W A R N I N G
       
    47 //  -------------
       
    48 //
       
    49 // This file is not part of the Qt API.  It exists for the convenience
       
    50 // of other Qt classes.  This header file may change from version to
       
    51 // version without notice, or even be removed.
       
    52 //
       
    53 // We mean it.
       
    54 //
       
    55 
       
    56 #include "qtextcursor.h"
       
    57 #include "qtextdocument.h"
       
    58 #include "qtextdocument_p.h"
       
    59 #include <private/qtextformat_p.h>
       
    60 #include "qtextobject.h"
       
    61 
       
    62 QT_BEGIN_NAMESPACE
       
    63 
       
    64 class QTextCursorPrivate : public QSharedData
       
    65 {
       
    66 public:
       
    67     QTextCursorPrivate(QTextDocumentPrivate *p);
       
    68     QTextCursorPrivate(const QTextCursorPrivate &rhs);
       
    69     ~QTextCursorPrivate();
       
    70 
       
    71     enum AdjustResult { CursorMoved, CursorUnchanged };
       
    72     AdjustResult adjustPosition(int positionOfChange, int charsAddedOrRemoved, QTextUndoCommand::Operation op);
       
    73 
       
    74     void adjustCursor(QTextCursor::MoveOperation m);
       
    75 
       
    76     void remove();
       
    77     void clearCells(QTextTable *table, int startRow, int startCol, int numRows, int numCols, QTextUndoCommand::Operation op);
       
    78     inline bool setPosition(int newPosition) {
       
    79         Q_ASSERT(newPosition >= 0 && newPosition < priv->length());
       
    80         bool moved = position != newPosition;
       
    81         if (moved) {
       
    82             position = newPosition;
       
    83             currentCharFormat = -1;
       
    84         }
       
    85         return moved;
       
    86     }
       
    87     void setX();
       
    88     bool canDelete(int pos) const;
       
    89 
       
    90     void insertBlock(const QTextBlockFormat &format, const QTextCharFormat &charFormat);
       
    91     bool movePosition(QTextCursor::MoveOperation op, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);
       
    92 
       
    93     inline QTextBlock block() const
       
    94         { return QTextBlock(priv, priv->blockMap().findNode(position)); }
       
    95     inline QTextBlockFormat blockFormat() const
       
    96         { return block().blockFormat(); }
       
    97 
       
    98     QTextLayout *blockLayout(QTextBlock &block) const;
       
    99 
       
   100     QTextTable *complexSelectionTable() const;
       
   101     void selectedTableCells(int *firstRow, int *numRows, int *firstColumn, int *numColumns) const;
       
   102 
       
   103     void setBlockCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
       
   104     void setBlockFormat(const QTextBlockFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
       
   105     void setCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
       
   106 
       
   107     void aboutToRemoveCell(int from, int to);
       
   108 
       
   109     QTextDocumentPrivate *priv;
       
   110     qreal x;
       
   111     int position;
       
   112     int anchor;
       
   113     int adjusted_anchor;
       
   114     int currentCharFormat;
       
   115     bool visualNavigation;
       
   116 };
       
   117 
       
   118 QT_END_NAMESPACE
       
   119 
       
   120 #endif // QTEXTCURSOR_P_H