SquareSeparatorImage.java

package org.richfaces.renderkit.html.images;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.Area;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;

import org.richfaces.resource.DynamicUserResource;

@DynamicUserResource
public class SquareSeparatorImage extends ToolbarSeparatorImage {
    private static final Dimension DIMENSIONS = new Dimension(9, 9);

    public Dimension getDimension() {
        return DIMENSIONS;
    }

    public void paint(Graphics2D g2d) {
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        Color gradientColorStart = Color.WHITE;
        Color gradientColorEnd = new Color(this.getHeaderBackgroundColor());
        Rectangle2D inSquare = new Rectangle2D.Double(2, 2, DIMENSIONS.getWidth() - 4, DIMENSIONS.getHeight() - 4);
        GradientPaint paint = new GradientPaint((float) 2, (float) 2, gradientColorStart, (float) DIMENSIONS.getWidth() - 2,
            (float) DIMENSIONS.getHeight() - 2, gradientColorEnd);
        g2d.setPaint(paint);
        g2d.fill(inSquare);

        RoundRectangle2D outSquare = new RoundRectangle2D.Double(0, 0, DIMENSIONS.getWidth(), DIMENSIONS.getHeight(), 4, 4);
        Rectangle2D midSquare = new Rectangle2D.Double(1, 1, DIMENSIONS.getWidth() - 2, DIMENSIONS.getHeight() - 2);

        g2d.setColor(new Color(this.getHeaderBackgroundColor()));
        Area area2 = new Area(outSquare);
        area2.subtract(new Area(midSquare));
        g2d.fill(area2);

        g2d.setColor(new Color(this.getHeaderGradientColor()));
        Area area = new Area(midSquare);
        area.subtract(new Area(inSquare));
        g2d.fill(area);
    }
}