/* $Id: linenumberwidget.cpp,v 1.10 2002/12/19 22:02:39 raggi Exp $
 *
 *  Copyright (C) 2002 Roberto Raggi (roberto@kdevelop.org)
 *
 *  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; see the file COPYING.  If not, write to
 *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 *  Boston, MA 02111-1307, USA.
 *
 */

/**********************************************************************
** Copyright (C) 2000 Trolltech AS.  All rights reserved.
**
** This file is part of Qt Designer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file COPYING included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include "linenumberwidget.h"
#include "qeditor.h"
#include "paragdata.h"

#include <private/qrichtext_p.h>

LineNumberWidget::LineNumberWidget( QEditor* editor, QWidget* parent, const char* name )
	: QWidget( parent, name, WRepaintNoErase | WStaticContents | WResizeNoErase ),
	  m_editor( editor )
{
	setFixedWidth( 50 );

	connect( m_editor->verticalScrollBar(), SIGNAL( valueChanged( int ) ),
			 this, SLOT( doRepaint() ) );
	connect( m_editor, SIGNAL( textChanged() ),
			 this, SLOT( doRepaint() ) );
        doRepaint();
}

LineNumberWidget::~LineNumberWidget()
{
}

void LineNumberWidget::paintEvent( QPaintEvent* /*e*/ )
{
	buffer.fill();

	QTextParagraph *p = m_editor->document()->firstParagraph();
	QPainter painter( &buffer );
	int yOffset = m_editor->contentsY();
	while ( p ) {
		if ( !p->isVisible() ) {
			p = p->next();
			continue;
		}
		if ( p->rect().y() + p->rect().height() - yOffset < 0 ) {
			p = p->next();
			continue;
		}
		if ( p->rect().y() - yOffset > height() )
			break;
		//ParagData *paragData = (ParagData*)p->extraData();

		painter.drawText( 0, p->rect().y() - yOffset,
				  buffer.width() - 10, p->rect().height(),
				  AlignRight | AlignBottom,
				  QString::number(p->paragId()+1) );
		p = p->next();
	}

	painter.end();
	bitBlt( this, 0, 0, &buffer );
}

void LineNumberWidget::resizeEvent( QResizeEvent *e )
{
	buffer.resize( e->size() );
	QWidget::resizeEvent( e );
}

#include "linenumberwidget.moc"
