Re: Emacs and Gnome Canvas

[Jan Djärv]

2010-07-15 16:35, Eli Zaretskii skrev:
> > Date: Thu, 15 Jul 2010 16:24:27 +0200
> > From: Jan Djärv<address@hidden>
> > Cc: address@hidden, address@hidden
> >
> > No, they need to be done anyway sometime, it is no waste.  If the text isn't
> > displayed, the attributes are nvertheless set up correctly for the time when
> > the text is to be displayed later (by scrolling for example).
>
> By which time those attributes could have recomputed many times, for
> just one display!

That may be so.  But there is nothing actually displayed, you just do a update 
of the attributes.  I'm sure one could hook in to the scroll bars and just 
update the visible portion if that is needed.

> > If done right, I don't think it would be slower.  But someone has to do the
> > code before we know.
>
> Well, naturally, if "done right"s definition is "to be no slower" ;-)

Isn't that always implied by "right"?

        Jan D.