text: /****************************************************************************
  **
  ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
  ** Contact: http://www.qt-project.org/legal
  **
  ** This file is part of the QtGui module of the Qt Toolkit.
  **
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  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
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  ** conditions see http://qt.digia.com/licensing.  For further information
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  ** 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
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  ** Alternatively, this file may be used under the terms of the GNU
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  ****************************************************************************/
  
  #ifndef QTEXTCURSOR_P_H
  #define QTEXTCURSOR_P_H
  
  //
  //  W A R N I N G
  //  -------------
  //
  // This file is not part of the Qt API.  It exists for the convenience
  // of other Qt classes.  This header file may change from version to
  // version without notice, or even be removed.
  //
  // We mean it.
  //
  
  #include "qtextcursor.h"
  #include "qtextdocument.h"
  #include "qtextdocument_p.h"
  #include <private/qtextformat_p.h>
  #include "qtextobject.h"
  
  QT_BEGIN_NAMESPACE
  
  class QTextCursorPrivate : public QSharedData
  {
  public:
      QTextCursorPrivate(QTextDocumentPrivate *p);
      QTextCursorPrivate(const QTextCursorPrivate &rhs);
      ~QTextCursorPrivate();
  
      enum AdjustResult { CursorMoved, CursorUnchanged };
      AdjustResult adjustPosition(int positionOfChange, int charsAddedOrRemoved, QTextUndoCommand::Operation op);
  
      void adjustCursor(QTextCursor::MoveOperation m);
  
      void remove();
      void clearCells(QTextTable *table, int startRow, int startCol, int numRows, int numCols, QTextUndoCommand::Operation op);
      inline bool setPosition(int newPosition) {
          Q_ASSERT(newPosition >= 0 && newPosition < priv->length());
          bool moved = position != newPosition;
          if (moved) {
              position = newPosition;
              currentCharFormat = -1;
          }
          return moved;
      }
      void setX();
      bool canDelete(int pos) const;
  
      void insertBlock(const QTextBlockFormat &format, const QTextCharFormat &charFormat);
      bool movePosition(QTextCursor::MoveOperation op, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);
  
      inline QTextBlock block() const
          { return QTextBlock(priv, priv->blockMap().findNode(position)); }
      inline QTextBlockFormat blockFormat() const
          { return block().blockFormat(); }
  
      QTextLayout *blockLayout(QTextBlock &block) const;
  
      QTextTable *complexSelectionTable() const;
      void selectedTableCells(int *firstRow, int *numRows, int *firstColumn, int *numColumns) const;
  
      void setBlockCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
      void setBlockFormat(const QTextBlockFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
      void setCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);
  
      void aboutToRemoveCell(int from, int to);
  
      QTextDocumentPrivate *priv;
      qreal x;
      int position;
      int anchor;
      int adjusted_anchor;
      int currentCharFormat;
      uint visualNavigation : 1;
      uint keepPositionOnInsert : 1;
      uint changed : 1;
  };
  
  QT_END_NAMESPACE
  
  #endif // QTEXTCURSOR_P_H
  