/*

  * Created on 14/mar/2010

  * Copyright (C) 2010 by Andrea Vacondio.

  *

  * 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.

  * 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

  */

 package org.pdfsam.guiclient.business.listeners;

 import java.awt.event.InputEvent;

 import java.awt.event.MouseWheelEvent;

 import java.awt.event.MouseWheelListener;

 import org.pdfsam.guiclient.gui.components.JPreviewImage;

 /**

  * Listen for the mouse wheel to perform zoom operations on the

  * {@link JPreviewImage}

  * 

  * @author Andrea Vacondio

  * 

  */

 public class MouseWheelZoomListener implements MouseWheelListener {

         private JPreviewImage image;

         /**

          * @param image

          */

         public MouseWheelZoomListener(JPreviewImage image) {

                 super();

                 this.image = image;

         }

         /*

          * (non-Javadoc)

          * 

          * @seejava.awt.event.MouseWheelListener#mouseWheelMoved(java.awt.event.

          * MouseWheelEvent)

          */

         @Override

         public void mouseWheelMoved(MouseWheelEvent e) {

                 if ((e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK) {

                         if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {

                                 image.zoom(e.getWheelRotation());

                         }

                 }

         }

 }