[gsharp-devel] Re: [mcclim-devel] scrollbars and :command-loop

Christophe Rhodes csr21 at cam.ac.uk
Fri May 12 16:58:57 UTC 2006

[added gsharp-devel, since that's where this patch would end up...]

"Andy Hefner" <ahefner at gmail.com> writes:

> I struggled with this a while ago and concluded that incremental
> redisplay is probably the intended solution.

While Andy said this in this forum, he did provide a hint in
another... on IRC, he said

<hefner> Xof: have you considered solving your scrolling problem by
  setting :display-time nil and calling your display function yourself
  from the top-level loop and using (clear-output-record
  (stream-output-history foo)) rather than window-clear?

And so I tried it, and the attached patch is the result.  I don't know
if it's climily correct, and it might suffer a bit from suboptimality
when loading in new files, but apart from that it does what I think I
want it to.

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So this patch does two things: one, after doing what drawing to the
score pane needs to be done, the :height space requirement is changed
to whatever it needs to be; two, window-clear calls are intercepted
and implemented following Andy's suggestion.




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