/**
 *
 * 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();
}
}