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/*
* Copyright (c) 2002-2003 Jesper K. Pedersen <blackie@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
**/
#include "qtregexphighlighter.h"
#include <qregexp.h>
QtRegexpHighlighter::QtRegexpHighlighter( QTextEdit* editor )
:RegexpHighlighter( editor ), _editor( editor )
{
}
int QtRegexpHighlighter::highlightParagraph( const QString & text, int endStateOfLastPara )
{
QRegExp regexp( _regexp );
regexp.setCaseSensitive( _caseSensitive );
regexp.setMinimal( _minimal );
setFormat( 0, text.length(), _editor->font(), Qt::black );
if ( !regexp.isValid() || regexp.isEmpty() ) {
return 0;
}
// ------------------------------ Process with the regular expression.
QColor colors[] = { Qt::red, Qt::blue };
int color = endStateOfLastPara;
if ( color < 0 || color > 1 )
color = 0;
int index = 0;
int start, length;
while ( (index = regexp.search( text, index ) ) != -1 && index < (int) text.length()) {
if ( regexp.pos(1) != -1 ) {
start = regexp.pos(1);
length = regexp.cap(1).length();
}
else {
start = index;
length = regexp.matchedLength();
}
if ( start != index )
setFormat( index, start-index, colors[color] );
QFont font = _editor->font();
font.setUnderline( true );
font.setPointSize( (int) (font.pointSize() * 1.3) );
setFormat( start, length, font, colors[color] );
if ( length + (start-index) != regexp.matchedLength() )
setFormat( start+length, regexp.matchedLength()-length-(start-index), colors[color] );
index += QMAX( 1, regexp.matchedLength() ); // ensure progress when matching for example ^ or \b
color = (color+1)%2;
}
return color;
}
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