Re: Scrollbars on GTK.

[Jan D.]

Óscar Fuentes skrev:
> Miles Bader <address@hidden> writes:
>
> > Óscar Fuentes <address@hidden> writes:
> > > The vertical scrollbar is a poor indication of the view position on the
> > > buffer. For instance, I'm looking at a buffer that shows all the text
> > > except for the last two lines; the thumb's height covers less than half
> > > the space occupied by the scroll bar and it is on the highest
> > > position. If I move the point to the end of the buffer, the thumb moves
> > > a bit down but still it's lower end is mid way to the bottom of the
> > > scrollbar.
> > It's because the gtk scrollbar isn't flexible enough to cope with all
> > the possibilities allowed by emacs' text display.
>
> [snipped detailed explanation]
>
> Thanks. Almost none of the apps I use are based on GTK and I was
> wondering if this behaviour shows a limitation in Emacs or in GTK.

It is not a limitation per se, but it has been descided that Emacs shall 
have the ability to scroll end of buffer to the top of the window with 
the scroll bar.  That means tha Emacs differs from practically all apps, 
GTK or not.

> Is this problem present in all the other X toolkits supported by Emacs?

More or less.  I think the native scroll bar handles this best.  Hardly 
surprising as the native scroll bar does not have any tool kit 
limitations.  AFAIK, most apps don't see this as a limitation, rather a 
normal behaviour.  I have not seen any app apart from Emacs where thumb 
at the bottom does not mean end of buffer at end of window and no more 
downwards scrolling possible.

        Jan D.