jrh-lisp: Resize image to fit on slide.
jrh-lisp: Resize image to fit on slide.

This is a simple heuristic that assumes that the image is the only
thing on the page (or close to it).  Just resize the image so that
it's no more than 90% of the width of the slide and 70% of the height
of the slide (maintaining the image's aspect ratio.

jrhope/emacs.d