ingrid.yao@Eng 2000-08-24
-----------------------------------------------------------
J2SE Version (please include all output from java -version flag):

java version "1.4.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0beta-b28)
Java HotSpot(TM) Client VM (build B22, mixed mode)

Does this problem occur on J2SE 1.3? No
Operating System Configuration Information (be specific): Windows NT 4 SP 4
Hardware Configuration Information (be specific): PII 400 Mhz - 256 MB -
Graphics board I740


Bug Description:

Drawing a rectangle using XORMode is broken and produces the following
message:

Exception occurred during event dispatching:
java.lang.InternalError: Cannot construct general op for
MaskBlit(Lsun/java2d/SurfaceData;Lsun/java2d/SurfaceData;Ljava/
awt/Composite;IIIIII[BII)V XOR mode
        at
sun.java2d.loops.GraphicsPrimitive.setupGeneralBinaryOp(GraphicsPrimitive.java:230)
        at sun.java2d.loops.MaskBlit.makePrimitive(MaskBlit.java:117)
        at
sun.java2d.loops.GraphicsPrimitiveMgr.locate(GraphicsPrimitiveMgr.java:170)
        at sun.java2d.loops.MaskBlit.locate(MaskBlit.java:51)
        at sun.java2d.loops.Blit$General.<init>(Blit.java:120)
        at sun.java2d.loops.Blit.makePrimitive(Blit.java:109)
        at
sun.java2d.loops.GraphicsPrimitiveMgr.locate(GraphicsPrimitiveMgr.java:170)
        at sun.java2d.loops.Blit.locate(Blit.java:46)
        at sun.java2d.loops.Blit.getFromCache(Blit.java:59)
        at
sun.java2d.pipe.AlphaPaintPipe.renderPathTile(AlphaPaintPipe.java:119)
        at
sun.java2d.pipe.SpanShapeRenderer$Composite.renderBox(SpanShapeRenderer.java:45)
        at
sun.java2d.pipe.SpanShapeRenderer.spanClipLoop(SpanShapeRenderer.java:237)
        at
sun.java2d.pipe.SpanShapeRenderer.renderSpans(SpanShapeRenderer.java:220)
        at
sun.java2d.pipe.SpanShapeRenderer.drawBasicStroke(SpanShapeRenderer.java:110
)
        at sun.java2d.pipe.SpanShapeRenderer.draw(SpanShapeRenderer.java:73)
        at
sun.java2d.pipe.PixelToShapeConverter.drawRect(PixelToShapeConverter.java:42
)
        at sun.java2d.pipe.ValidatePipe.drawRect(ValidatePipe.java:36)
        at sun.java2d.SunGraphics2D.drawRect(SunGraphics2D.java:1880)

Test Program:
=============
Here is a simple standalone app that reproduces the problem:

// Import standard packages
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/* ******************************
 * ******************************
 *
 * Simple Application.
 *
 * ******************************
 * ******************************/

final class Simple
      extends JFrame
{
  Simple()
  {
super (); // Call JFrame base constructor.
setTitle("Simple Application"); // Set application's title.

final JPanel _view = new JPanel(); // Instanciates view
_view.setBackground(Color.white);
_view.setPreferredSize(new Dimension (300,300)); // Set default size

getContentPane().add (_view, BorderLayout.CENTER); // Add to main window

// Exit is called when the main window is closed.
addWindowListener (new WindowAdapter ()
{
public void windowClosing (WindowEvent e)
{
System.exit (0);
}
});
_view.addMouseListener (new MouseAdapter() {
public void mousePressed(MouseEvent l) {
Graphics g = _view.getGraphics();
g.setXORMode(Color.white);
g.drawRect(l.getX()-10, l.getY()-10, 20, 20);
}
});

// Display all
pack();
show();
  }

  /* ******************************
   *
   * Method: main
   *
   * ******************************/

  public static void main
    (
     String[] args
    )
  {
new Simple();
  }
}