/*
* org.openmicroscopy.shoola.agents.dataBrowser.visitor.MagnificationVisitor
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2008 University of Dundee. All rights reserved.
*
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*------------------------------------------------------------------------------
*/
package org.openmicroscopy.shoola.agents.dataBrowser.visitor;
//Java imports
//Third-party libraries
//Application-internal dependencies
import org.openmicroscopy.shoola.agents.dataBrowser.browser.ImageDisplayVisitor;
import org.openmicroscopy.shoola.agents.dataBrowser.browser.ImageNode;
import org.openmicroscopy.shoola.agents.dataBrowser.browser.ImageSet;
import org.openmicroscopy.shoola.agents.dataBrowser.browser.Thumbnail;
/**
* Magnifies the {@link ImageNode}s contained in the selected {@link ImageSet}.
* This visitor is accepted by an {@link ImageSet} not by the browser.
*
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @author Donald MacDonald
* <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
* @version 3.0
* <small>
* (<b>Internal version:</b> $Revision: $Date: $)
* </small>
* @since OME3.0
*/
public class MagnificationVisitor
implements ImageDisplayVisitor
{
/** The magnification factor. */
private double factor;
/**
* Creates a new instance.
*
* @param factor The magnification factor.
*/
public MagnificationVisitor(double factor)
{
if (factor > Thumbnail.MAX_SCALING_FACTOR)
factor = Thumbnail.MAX_SCALING_FACTOR;
else if (factor < Thumbnail.MIN_SCALING_FACTOR)
factor = Thumbnail.MIN_SCALING_FACTOR;
this.factor = factor;
}
/**
* Implemented as specified by {@link ImageDisplayVisitor}.
* @see ImageDisplayVisitor#visit(ImageNode)
*/
public void visit(ImageNode node)
{
Thumbnail th = node.getThumbnail();
if (th != null) {
double sf = th.getScalingFactor();
if (sf != factor) th.scale(factor);
}
}
/**
* Implemented as specified by {@link ImageDisplayVisitor}.
* @see ImageDisplayVisitor#visit(ImageSet)
*/
public void visit(ImageSet node) {}
}