Re: Side windows

[Eli Zaretskii <eliz@gnu.org>]

> From: Juri Linkov <juri@jurta.org>
> Cc: Eli Zaretskii <eliz@gnu.org>,  grishka@gmx.de,  drew.adams@oracle.com,  emacs-devel@gnu.org
> Date: Wed, 14 Apr 2010 19:52:01 +0300
> 
> >>>   ** Compilation error navigation bar, parallel to the scroll bar,
> >>>   indicating where in the buffer there are compilation errors.
> >>>   Perhaps we could arrange to display these error indications on top
> >>>   of the scroll bar itself.  That depends on to what extent toolkit
> >>>   scroll bars are extensible.
> >>>
> >>> If it's possible to display such tab-like indications
> >>> on the scroll bar, is it still called a scroll bar?
> >>>
> >>> If it's not possible, then what is an alternative?
> >>> Maybe, 1-column side bar windows?
> >>
> >> The fringe, I think.
> >
> > The fringe nearest the scroll-bar is the right place to display the
> > indicators I think, but we need a new mechanism to display them, as they
> > should not scroll with the buffer text.
> 
> Does this mean an additional fringe is necessary that doesn't scroll?

Not necessarily.  We could provide a feature whereby bitmaps displayed
in the fringe would be moved by redisplay so that their position
relative to the window top does not change as the window is scrolled.