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Core visualization support for the JUNG project

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/*
 * Copyright (c) 2005, The JUNG Authors
 * All rights reserved.
 *
 * This software is open-source under the BSD license; see either "license.txt"
 * or https://github.com/jrtom/jung/blob/master/LICENSE for a description.
 *
 * Created on Aug 15, 2005
 */

package edu.uci.ics.jung.visualization.control;

import java.awt.event.MouseWheelEvent;

import edu.uci.ics.jung.visualization.VisualizationViewer;

/**
 * Overrides ScalingGraphMousePlugin so that mouse events in the
 * satellite view will cause scaling in the main view
 * 
 * @see ScalingGraphMousePlugin
 * @author Tom Nelson 
 *
 */
public class SatelliteScalingGraphMousePlugin extends ScalingGraphMousePlugin {

    public SatelliteScalingGraphMousePlugin(ScalingControl scaler, int modifiers) {
        super(scaler, modifiers);
    }

    public SatelliteScalingGraphMousePlugin(ScalingControl scaler, int modifiers, float in, float out) {
        super(scaler, modifiers, in, out);
    }
    
    /**
     * zoom the master view display in or out, depending on the direction of the
     * mouse wheel motion.
     */
    public void mouseWheelMoved(MouseWheelEvent e) {
        boolean accepted = checkModifiers(e);
        if(accepted == true) {
            VisualizationViewer vv = (VisualizationViewer)e.getSource();

            if(vv instanceof SatelliteVisualizationViewer) {
                VisualizationViewer vvMaster = 
                    ((SatelliteVisualizationViewer)vv).getMaster();

                int amount = e.getWheelRotation();
                
                if(amount > 0) {
                    scaler.scale(vvMaster, in, vvMaster.getCenter());

                } else if(amount < 0) {
                    scaler.scale(vvMaster, out, vvMaster.getCenter());
                }
                e.consume();
                vv.repaint();
            }
        }
    }


}