Make image Transparency
//package mw.client.utils.gui;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageFilter;
import java.awt.image.ImageProducer;
import java.awt.image.RGBImageFilter;
public class Transparency {
public static Image makeColorTransparent(Image im, final Color color) {
ImageFilter filter = new RGBImageFilter() {
// the color we are looking for... Alpha bits are set to opaque
public int markerRGB = color.getRGB() | 0xFF000000;
@Override
public final int filterRGB(int x, int y, int rgb) {
if ((rgb | 0xFF000000) == markerRGB) {
// Mark the alpha bits as zero - transparent
return 0x00FFFFFF & rgb;
} else {
// nothing to do
return rgb;
}
}
};
ImageProducer ip = new FilteredImageSource(im.getSource(), filter);
return Toolkit.getDefaultToolkit().createImage(ip);
}
public static BufferedImage makeImageTranslucent(BufferedImage source,
double alpha) {
BufferedImage target = new BufferedImage(source.getWidth(),
source.getHeight(), java.awt.Transparency.TRANSLUCENT);
// Get the images graphics
Graphics2D g = target.createGraphics();
// Set the Graphics composite to Alpha
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
(float) alpha));
// Draw the image into the prepared reciver image
g.drawImage(source, null, 0, 0);
// let go of all system resources in this Graphics
g.dispose();
// Return the image
return target;
}
}
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