PaintUtils.java 文件源码

/**
 * Creates a new {@code Paint} that is a checkered effect using the specified colors.
 * <p>
 * While this method supports transparent colors, this implementation performs painting
 * operations using the second color after it performs operations using the first color. This
 * means that to create a checkered paint with a fully-transparent color, you MUST specify that
 * color first.
 * 
 * @param c1
 *            the first color
 * @param c2
 *            the second color
 * @param size
 *            the size of the paint
 * @return a new {@code Paint} checkering the supplied colors
 */
public static Paint getCheckerPaint(Paint c1, Paint c2, int size) {
    BufferedImage img = GraphicsUtilities.createCompatibleTranslucentImage(size, size);
    Graphics2D g = img.createGraphics();

    try {
        g.setPaint(c1);
        g.fillRect(0, 0, size, size);
        g.setPaint(c2);
        g.fillRect(0, 0, size / 2, size / 2);
        g.fillRect(size / 2, size / 2, size / 2, size / 2);
    } finally {
        g.dispose();
    }

    return new TexturePaint(img,new Rectangle(0,0,size,size));
}