Scrolling in the library is very slow (especially with an aa-font) because
for every line scrolled the whole display is redrawn.  A hopefully simple
solution is to shift the display up/down, set the clipping appropriately,
and don't bother redrawing rows that don't intersect the clipping
rectangle.  Any thoughts, objections, alternatives?

Alex

--
Dr. Alexander R. Pruss  || e-mail: [EMAIL PROTECTED]
Philosophy Department   || online papers and home page:
Georgetown University   ||  www.georgetown.edu/faculty/ap85
Washington, DC 20057    ||
U.S.A.                  ||
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   "Philosophiam discimus non ut tantum sciamus, sed ut boni efficiamur."
       - Paul of Worczyn (1424)

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