public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof GanttRenderer)) {
            return false;
        }
        GanttRenderer that = (GanttRenderer) obj;
        if (!PaintUtilities.equal(this.completePaint, that.completePaint)) {
            return false;
        }
        if (!PaintUtilities.equal(this.incompletePaint, that.incompletePaint)) {
            return false;
        }
        if (this.startPercent != that.startPercent) {
            return false;
        }
        if (this.endPercent != that.endPercent) {
            return false;
        }
        return super.equals(obj);