lyx_mirror/src/text_funcs.C
André Pönitz 983d23f87d setUndo2 interface change
access to topmost plist item (as reference...)


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7022 a592a061-630c-0410-9148-cb99ea01b6c8
2003-05-23 10:33:40 +00:00

59 lines
1.4 KiB
C

/**
* \file text_funcs.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bjønnes
* \author John Levon
*
* Full author contact details are available in file CREDITS
*
* This file contains some utility functions for actually mutating
* the text contents of a document
*/
#include <config.h>
#include "lyxtext.h"
#include "paragraph.h"
#include "lyxcursor.h"
#include "undo_funcs.h"
#include <boost/next_prior.hpp>
using lyx::pos_type;
void transposeChars(LyXText & text, LyXCursor const & cursor)
{
ParagraphList::iterator tmppit = cursor.par();
setUndo(text.bv(), Undo::FINISH, tmppit);
pos_type tmppos = cursor.pos();
// First decide if it is possible to transpose at all
if (tmppos == 0 || tmppos == tmppit->size())
return;
if (isDeletedText(*tmppit, tmppos - 1)
|| isDeletedText(*tmppit, tmppos))
return;
unsigned char c1 = tmppit->getChar(tmppos);
unsigned char c2 = tmppit->getChar(tmppos - 1);
// We should have an implementation that handles insets
// as well, but that will have to come later. (Lgb)
if (c1 == Paragraph::META_INSET || c2 == Paragraph::META_INSET)
return;
bool const erased = tmppit->erase(tmppos - 1, tmppos + 1);
pos_type const ipos(erased ? tmppos - 1 : tmppos + 1);
tmppit->insertChar(ipos, c1);
tmppit->insertChar(ipos + 1, c2);
text.checkParagraph(tmppit, tmppos);
}