Re: Scrollbar thumbs

[grischka]

> > The simple rule is: First do it right, then do it fast.  Try to make
> > it work for small files and then you can still think about how to get
> > equally good results with larger ones.
>
> It is not an option to make Emacs unusable on large files for the sake
> of the scrollbar idiosyncrasies of some toolkit.

In practice, if the file is large, scrollbar operations are less 
accurate and less smooth anyway, so you can get away with rough 
estimations very well without further compromising the scroll quality.

However the smaller the file the better a scrollbar can work and that 
is why accurate size calculations are especially beneficial for small 
files rsp. well choosen small parts of a file, such as at the top and 
the bottom.

--- grischka