Create Gradient Mask
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import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.GraphicsEnvironment;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.SwingConstants;
/**
*
* @author aim
*/
public class Utils {
public static BufferedImage createGradientMask(int width, int height, int orientation) {
// algorithm derived from Romain Guy's blog
BufferedImage gradient = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = gradient.createGraphics();
GradientPaint paint = new GradientPaint(0.0f, 0.0f,
new Color(1.0f, 1.0f, 1.0f, 1.0f),
orientation == SwingConstants.HORIZONTAL? width : 0.0f,
orientation == SwingConstants.VERTICAL? height : 0.0f,
new Color(1.0f, 1.0f, 1.0f, 0.0f));
g.setPaint(paint);
g.fill(new Rectangle2D.Double(0, 0, width, height));
g.dispose();
gradient.flush();
return gradient;
}
}
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