Name: jk109818			Date: 12/17/2001


java version "1.4.0-beta3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta3-b84)
Java HotSpot(TM) Client VM (build 1.4.0-beta3-b84, mixed mode)

I have a GIF that is mostly transparent that I draw onto a canvas with the
variation of 'Graphics.drawImage' that takes a background color. If that
background color is one of the system colors ('SystemColor.control', for
instance), black is drawn for all of the transparent pixels with JDK 1.4 beta
3. This worked fine before with 1.2 and 1.3.

Here is a simple application that demonstrates the problem:

import java.awt.*;

public class ColorBug extends Panel
{
    public static void main (String [] args)
    {
        transparentGIF = Toolkit.getDefaultToolkit ().getImage
("Transparent.gif");

        Frame f = new Frame ();
        ColorBug bug = new ColorBug ();
        bug.setBackground (Color.yellow);
        f.add (bug);
        f.setSize (200, 200);
        f.show ();
    }

    static Image transparentGIF;
    
    public void paint (Graphics g)
    {
        g.drawImage (transparentGIF, 0, 0, SystemColor.control, this);
        g.drawImage (transparentGIF, 0, 100, new Color
(SystemColor.control.getRGB ()), this);
    }
}

Notice that I'm drawing the transparent GIF twice. If I take the RGB value of
the system color and make a new color from it, the transparent pixels are drawn
correctly with 1.4. With 1.3, both versions of the image are drawn correctly.

"Transparent.gif" is available on request.

Release Regression From : 1.3
The above release value was the last known release where this 
bug was knwon to work. Since then there has been a regression.

(Review ID: 136037) 
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