"Paul Werkowski" pw@snoopy.mv.com writes:

What is the supposed status of clipping-region support? A simple test here seem to suggest clipping-region is ignored.

I believe that gsharp is currently using it to implement partial beams in musical notation. We patch some things, I think on Gilbert's suggestion, but repaint continues not to work: the graphical display is messed up on reexpose.

Cheers,

Christophe

;;; this is clim-patches.lisp from gsharp: (in-package :clim-internals)

(defmethod replay-output-record :around (record stream &optional region (x-offset 0) (y-offset 0)) (declare (ignore record region x-offset y-offset)) (with-sheet-medium (medium stream) (letf (((medium-ink medium) (medium-ink medium)) ((medium-foreground medium) (medium-foreground medium)) ((medium-background medium) (medium-background medium)) ((medium-transformation medium) (medium-transformation medium)) ((medium-clipping-region medium) (medium-clipping-region medium)) ((medium-line-style medium) (medium-line-style medium)) ((medium-text-style medium) (medium-text-style medium)) ((medium-default-text-style medium) (medium-default-text-style medium))) (call-next-method))))

(defmethod set-medium-graphics-state :after ((state gs-clip-mixin) medium) (setf (medium-clipping-region medium) (region-intersection (medium-clipping-region medium) (graphics-state-clip state))))