/**
 * SunriseCanvas displays a world map showing the sunrise and sunset terminators.<p>
 *
 * Copyright &copy; 1996-98 Martin Minow. All Rights Reserved.<p>
 * World map copyright &copy; 1992-97 Apple Computer Inc. All Rights Reserved.
 * Used by permission.<p>
 *
 * Permission to use, copy, modify, and redistribute this software and its
 * documentation for personal, non-commercial use is hereby granted provided that
 * this copyright notice and appropriate documentation appears in all copies. This
 * software may not be distributed for fee or as part of commercial, "shareware,"
 * and/or not-for-profit endevors including, but not limited to, CD-ROM collections,
 * online databases, and subscription services without specific license.<p>
 *
 * @author <a href="mailto:minow@merrymeet.com">Martin Minow</a>
 * @version 1.1 (from SunClock 1.1)
 * 1997.11.12.
 * Set tabs every 4 characters.
 */
import java.awt.*;
import java.awt.image.*;
import java.util.*;

/*
 * For Java 1.0.2 compatibility, this must be a Canvas subclass
 */
public class SunriseCanvas extends java.awt.Canvas
{

	protected SunrisePixels		sunrisePixels;
	protected int					imageWidth;
	protected int					imageHeight;
	protected Date					instant			= new Date();
	
	public SunriseCanvas(
			Image			worldMapImage
		)
	{
		sunrisePixels = new SunrisePixels(worldMapImage, this);		
		imageWidth			= sunrisePixels.getImageWidth();
		imageHeight			= sunrisePixels.getImageHeight();
	}
	public void setDate(
			Date			instant
		)
	{
		this.instant		= instant;
		sunrisePixels.setDate(instant);
		repaint();
	}
	public Date getDate()
	{
		return (instant);
	}
	public void update(
			Graphics			g
		)
	{
		paint(g);
	}
	public synchronized void paint(
			Graphics			g
		)
	{
		/*
		 * Center the image in the drawing area at the bottom.
		 */
		Dimension	d		= super.size();		/* Java 1.0.2 compatibility	*/
		int			x		= (d.width - imageWidth) / 2;
		int			y		= (d.height - imageHeight);
		g.drawImage(sunrisePixels.getImage(), x, y, this);
	}
	public Dimension preferredSize()
	{
		return (new Dimension(imageWidth, imageHeight));
	}
	public Dimension getPreferredSize()
	{
		return (preferredSize());
	}
	public Dimension minimumSize()
	{
		return (preferredSize());
	}
	public Dimension getMinimumSize()
	{
		return (preferredSize());
	}
}