/***************************************************************************
 *   Copyright (C) 2007-2008 by Harm van Eersel                            *
 *                                                                         *
 *   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 "molview.h"

#include <QDebug>
#include <QGraphicsScene>
#include <QWheelEvent>

#include <math.h>

namespace Molsketch {

MolView::MolView(QGraphicsScene* scene) : QGraphicsView(scene)
{
	setContextMenuPolicy(Qt::ActionsContextMenu);
	setMouseTracking(true);
	setAcceptDrops(true);
	setRenderHints(QPainter::Antialiasing);
	setResizeAnchor(QGraphicsView::AnchorViewCenter);
	setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
        setStyleSheet("");
        setContextMenuPolicy(Qt::DefaultContextMenu);

#if QT_VERSION >= 0x040300
        setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
#endif
}

void MolView::scaleView(qreal scaleFactor)
{
	qreal factor = matrix().scale(scaleFactor, scaleFactor).mapRect(QRect(0,0,1,1)).width();
	if (factor < 0.07 || factor > 100) return;
	scale(scaleFactor, scaleFactor);
}

}
