/***************************************************************************
*   Copyright (C) 2006-2008 by Ian Reinhart Geiser                        *
*   geiseri@yahoo.com                                                     *
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
*   This program is distributed in the hope that it will be useful,       *
*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
*   GNU General Public License for more details.                          *
*                                                                         *
*   You should have received a copy of the GNU General Public License     *
*   along with this program; if not, write to the                         *
*   Free Software Foundation, Inc.,                                       *
*   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
***************************************************************************/
#include "spellinghighlighter.h"
#include "qaspell.h"

#include <QTextFormat>

SpellingHighlighter::SpellingHighlighter(QTextDocument* parent): QSyntaxHighlighter(parent)
{

	m_spellChecker = new QASpell;
	m_spellChecker->configureSpellchecker("en_US");
	wordFormat.setUnderlineColor(Qt::darkRed);
	wordFormat.setUnderlineStyle(QTextCharFormat::SpellCheckUnderline);
}


SpellingHighlighter::~SpellingHighlighter()
{
	delete m_spellChecker;
}


void SpellingHighlighter::highlightBlock(const QString& text)
{
	int textSize = text.size();
	int oldIndex = 0;
	int index = 0;

	while( index < textSize)
	{
		if( text.at(index).isLetterOrNumber() )
		{
			index++;
		}
		else
		{
			int len = index - oldIndex;
			QString word = text.mid( oldIndex, len);
			if( !word.isEmpty() && !m_spellChecker->checkWord( word  ) )
				setFormat(oldIndex, len, wordFormat);
			oldIndex = index + 1;
			index++;
		}
	}

}