xdot.py 文件源码

def lookup_color(self, c):
        try:
            color = Gdk.color_parse(c)
        except ValueError:
            pass
        else:
            s = 1.0/65535.0
            r = color.red*s
            g = color.green*s
            b = color.blue*s
            a = 1.0
            return r, g, b, a

        try:
            dummy, scheme, index = c.split('/')
            r, g, b = brewer_colors[scheme][int(index)]
        except (ValueError, KeyError):
            pass
        else:
            s = 1.0/255.0
            r = r*s
            g = g*s
            b = b*s
            a = 1.0
            return r, g, b, a

        sys.stderr.write("warning: unknown color '%s'\n" % c)
        return None