ShadowFrames - fancy borders

The ShadowFrames module defines a couple of functions for drawing shadowed borders, Motif, Tcl/Tk style:

drawFrame :: Relief  -- sunken/raised etc.
          -> Int     -- shadow width
	  -> Size    -- width&height of box
	  -> Pen     -- lighter pen
	  -> Pen     -- darker pen
	  -> Picture

diamond   :: Pen     -- pen to fill inside of diamond
	  -> Pen     -- lighter pen
	  -> Pen     -- darker pen
	  -> Int     -- shadow width
	  -> Size    -- size of diamond
	  -> Picture

diamond_set :: Pen     -- pen to fill inside of diamond
	    -> Pen     -- lighter pen
	    -> Pen     -- darker pen
	    -> Int     -- shadow width
	    -> Size    -- size of diamond
	    -> Picture

drawTriangle :: CompassDirection
	     -> Relief  -- sunken/raised etc.
	     -> Int     -- shadow width
	     -> Size    -- size of triangle bbox
	     -> Pen     -- inside pen
	     -> Pen     -- lighter pen
	     -> Pen     -- darker pen
	     -> Picture