/**
 * 
 * Demonstrate Java hang when rendering a Shape with max. coordinates
 * much greater than 32K.
 *
 * Item 16
 * 10/3/2000
 * 
 * 
 * Displaying a Shape in Graphics2D with coordinates much greater than 32K
 * using the default transform and clip causes Java to hang.
 * 
 * The problem occurs under WinNT 4.0, Win95, Win98, and Solaris 8 iwth
 * the 1.2.2 and 1.3 JVMs.
 * 
 * The program below draws a Shape which is a triangle, and the sole
 * command line argument is a number used as the maximum x and y
 * coordinates  of the triangle.
 * 
 * In other words it draws a filled triangle with coordinates:  (0,0),
 * (0,n), (n,n)
 * 
 * 33052 may be a magic number for this problem on Solaris.vi
 * 
 *
 * 
 * To reproduce: 
 *     javac gifclient/ClipBugViewer.java
 * 
 *     java gifclient.ClipBugViewer 64000
 */
package gifclient;

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

/** demonstrate clipping bug
 */
public class ClipBugViewer extends JPanel {

	private Shape m_shape;

	public ClipBugViewer()
	{
	}

	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);

		Graphics2D g2d = (Graphics2D) g;
		if (m_shape != null)
		{
			System.out.println("paintComponent()");
			g2d.setColor(Color.blue);
			System.out.println("paintComponent() about to draw");
			g2d.draw(m_shape);
			System.out.println("paintComponent() about to fill");
			g2d.fill(m_shape);
			System.out.println("paintComponent() returning");
		}

	}

	public void setShape(Shape shape)
	{
		m_shape = shape;
	}

	public static final void main(String [] args) throws Exception
	{
		int bound = 32000;
		if (args.length > 0)
		  try {
			bound = Integer.parseInt(args[0]);
		  } catch (NumberFormatException e) {
			System.err.println("Usage: ClipBugViewer <#>" + 
				"	Supply an upper bound, default is 32000");
		  };
		ClipBugViewer viewer = new ClipBugViewer();
		viewer.setSize(new Dimension(600, 600));

		JFrame frame = new JFrame();
		frame.addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e) 
			{
				System.exit(0);
			}
		});
		
		GeneralPath path = new GeneralPath();
		path.moveTo(0, 0);
		path.lineTo(0, bound);
		path.lineTo(0 + bound, bound);

		path.closePath();

		viewer.setShape(path);
			
		frame.setSize(new Dimension(600, 600));
		frame.setVisible(true);
		frame.getContentPane().add(viewer);

		frame.repaint();
	}
}