/**
* Draws a colored cell.
*
* @param g graphics reference
* @param xs horizontal start position
* @param xe horizontal end position
* @param ys vertical start position
* @param ye vertical end position
* @param focus highlighting flag
*/
public static void drawCell(
final Graphics g,
final int xs,
final int xe,
final int ys,
final int ye,
final boolean focus) {
g.setColor(gray);
g.drawRect(xs, ys, xe - xs - 1, ye - ys - 1);
g.setColor(BACK);
g.drawRect(xs + 1, ys + 1, xe - xs - 3, ye - ys - 3);
g.setColor(focus ? lgray : BACK);
g.fillRect(xs + 1, ys + 1, xe - xs - 2, ye - ys - 2);
}
