Method drawColorBar

ij/src/main/java/ij/LookUpTable.java:88–100

Draws a color bar with the LUT, with a black rectangle around. 'x' is the coordinate of the field for the lowest LUT color. Note that 'width' is the width of the area for the LUT colors; thus no colors will be omitted with a 256-entry LUT if width=256. The left line of the rectangle is at x, the

(Graphics g, int x, int y, int width, int height)

	 *  will be omitted with a 256-entry LUT if width=256.
	 *  The left line of the rectangle is at x, the right one at x+width+1. */
	public void drawColorBar(Graphics g, int x, int y, int width, int height) {
		double scale = width/(double)mapSize;
		ColorProcessor cp = new ColorProcessor(width, height);
		for (int i = 0; i<mapSize; i++) {
			cp.setColor(new Color(rLUT[i]&0xff,gLUT[i]&0xff,bLUT[i]&0xff));
			int xloc0 = (int)Math.round(i*scale);
			int xloc1 = (int)Math.round((i+1)*scale);
			cp.fillRect(xloc0, 0, xloc1-xloc0, height);
		}
		g.drawImage(cp.createImage(), x+1, y, null);
		g.setColor(Color.black);
		g.drawRect(x, y, width+1, height);
	}

	public void drawUnscaledColorBar(ImageProcessor ip, int x, int y, int width, int height) {
		ImageProcessor bar = null;