sectorselection.java

world wind java sdk 源码

/*
Copyright (C) 2001, 2009 United States Government
as represented by the Administrator of the
National Aeronautics and Space Administration.
All Rights Reserved.
*/

package gov.nasa.worldwind.examples;

import gov.nasa.worldwind.examples.util.SectorSelector;
import gov.nasa.worldwind.geom.Sector;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;

/**
 * Demonstrates how to use the SectorSelector utility.
 *
 * @author tag
 * @version $Id: SectorSelection.java 9760 2009-03-29 09:34:06Z tgaskins $
 */
public class SectorSelection extends ApplicationTemplate
{
    public static class AppFrame extends ApplicationTemplate.AppFrame
    {
        private SectorSelector selector;

        public AppFrame()
        {
            super(true, true, false);

            this.selector = new SectorSelector(getWwd());
            this.selector.setInteriorColor(new Color(1f, 1f, 1f, 0.1f));
            this.selector.setBorderColor(new Color(1f, 0f, 0f, 0.5f));
            this.selector.setBorderWidth(3);

            // Set up a button to enable and disable region selection.
            JButton btn = new JButton(new EnableSelectorAction());
            btn.setToolTipText("Press Start then press and drag button 1 on globe");

            JPanel p = new JPanel(new BorderLayout(5, 5));
            p.add(btn, BorderLayout.CENTER);

            this.getLayerPanel().add(p, BorderLayout.SOUTH);

            // Listen for changes to the sector selector's region. Could also just wait until the user finishes
            // and query the result using selector.getSector().
            this.selector.addPropertyChangeListener(SectorSelector.SECTOR_PROPERTY, new PropertyChangeListener()
            {
                public void propertyChange(PropertyChangeEvent evt)
                {
                    Sector sector = (Sector) evt.getNewValue();
//                    System.out.println(sector != null ? sector : "no sector");
                }
            });
        }

        private class EnableSelectorAction extends AbstractAction
        {
            public EnableSelectorAction()
            {
                super("Start");
            }

            public void actionPerformed(ActionEvent e)
            {
                ((JButton) e.getSource()).setAction(new DisableSelectorAction());
                selector.enable();
            }
        }

        private class DisableSelectorAction extends AbstractAction
        {
            public DisableSelectorAction()
            {
                super("Stop");
            }

            public void actionPerformed(ActionEvent e)
            {
                selector.disable();
                ((JButton) e.getSource()).setAction(new EnableSelectorAction());
            }
        }
    }

    public static void main(String[] args)
    {
        ApplicationTemplate.start("Sector Selection", AppFrame.class);
    }
}