[mcclim-devel] postscript streams

[Christophe Rhodes]

Hi,

Does it make sense to consider a request to include
updating-output-stream-mixin in the superclasses of postscript-stream
(in Backends/Postscript/class.lisp)?  We have an application which
uses updating-output for incremental redisplay, but we would also like
to be able to use the same drawing functions (and the same drawing
logic, more importantly) without having to implement it twice, once
for updating-output streams and once for postscript streams.

The below makes sense in our use case.  (The alternative of creating a
graphical output record and then replaying it on the postscript stream
is unattractive because we have a use case with no graphical output at
all)

Cheers,

Christophe

Index: Backends/PostScript/class.lisp
===================================================================
RCS file: /project/mcclim/cvsroot/mcclim/Backends/PostScript/class.lisp,v
retrieving revision 1.6
diff -u -r1.6 class.lisp
--- Backends/PostScript/class.lisp      4 Jul 2002 06:57:43 -0000       1.6
+++ Backends/PostScript/class.lisp      28 Jul 2005 11:31:01 -0000
@@ -60,6 +60,7 @@
                              permanent-medium-sheet-output-mixin
                              sheet-mute-repainting-mixin
                              mirrored-sheet-mixin ; ?
+                            climi::updating-output-stream-mixin ; ??
                              standard-extended-output-stream
                              standard-output-recording-stream)
   ((file-stream :initarg :file-stream :reader postscript-stream-file-stream)