draw-rectangle in dc<%>

Draws a rectangle. The current pen is used for the outline and the current brush for filling the shape.

If both the pen and brush are non-transparent, the rectangle is filled with the brush before the outline is drawn with the pen. When the pen is size 0 or 1, the filling precisely overlaps the entire outline. As a result, if a rectangle is drawn with a size-0 or size-1 'xor pen% and an 'xor brush%, the outline is xored twice (first by the brush, then by the pen), leaving it unchanged.

• (send a-dc draw-rectangle x y width height) -> void
     x : real number
     y : real number
     width : non-negative real number
     height : non-negative real number

  Draws a rectangle with the given top-left corner and size.

  Restrictions on the magnitude of drawing coordinates are described with dc<%>.