Re: Emacs canvas support

[Eli Zaretskii]

> From: Po Lu <address@hidden>
> Cc: address@hidden
> Date: Wed, 29 Apr 2020 18:41:08 +0800
> 
> > Incidentally, how does this compare with functions in svg.el?
> 
> While right now svg.el seems to have more features, it isn't
> particularly well suited to displaying things quickly.
> 
> In fact, my own bad experiences with using svg.el to draw rapidly
> changing information inspired me to begin working on this.

What exactly is slow there, and why?

> In the future, I hope that canvases also become more flexible than
> svg.el.  A nice goal would be to have everything cairo has.

If canvasses are meant to be a replacement for svg.el, we need to keep
both equivalent, functionality-wise, for the benefit of platforms that
don't use Cairo, and also to ease the transition period for those
platforms which do.

So the relation between svg.el and canvasses should be rethought, I
think.