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Re: Emacs canvas support

From: Eli Zaretskii
Subject: Re: Emacs canvas support
Date: Wed, 29 Apr 2020 13:35:39 +0300

> From: Po Lu <address@hidden>
> Cc: address@hidden
> Date: Wed, 29 Apr 2020 18:22:13 +0800
> Eli Zaretskii <address@hidden> writes:
> > That's the technical description of the implementation.  It doesn't
> > explain when  canvases can be useful and for what purposes.
> Canvases are useful for when I want to be able to control a portion of a
> screen dynamically, in a fast way, from Lisp code.  For instance,
> displaying a constantly changing bar chart or graph inside Emacs.

So this _is_ a way of putting images on the Emacs display, but in a
way that creates the image dynamically from Lisp, instead of reading
it from a file or producing the binary data for that image.  Right?

Incidentally, how does this compare with functions in svg.el?

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