From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <n.goaziou@gmail.com>
Subject: Re: Beamer export: How to handle overlayarea
Date: Mon, 21 Oct 2013 12:12:43 +0200
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In-Reply-To: <e69914d5-d5e1-456f-8983-9660f283b252@dewdrop-world.net> (James
	Harkins's message of "Mon, 21 Oct 2013 15:52:14 +0800")
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To: James Harkins <jamshark70@gmail.com>
Cc: orgmode <emacs-orgmode@gnu.org>

Hello,

James Harkins <jamshark70@gmail.com> writes:

> Per the beamer user guide, the syntax of the overlayarea environment is:
>
> \begin{overlayarea}{area width}{area height}
> 	environment contents
> \end{overlayarea}
>
> I can't figure out how to get the width and height in properly.
>
> From the customize interface, I added overlayarea as follows:
>
> '(org-beamer-environments-extra (quote (("CJK" "Z" "\\begin{CJK}%a%H"
> "\\end{CJK}") ("onlyenv" "O" "\\begin{onlyenv}%a" "\\end{onlyenv}")
> ("overlayarea" "Y" "\\begin{overlayarea}%o%a" "\\end{overlayarea}"))))
>
> And I can plug text into %o using the BEAMER_OPT property:
>
> *** Overlays						      :B_overlayarea:
>    :PROPERTIES:
>    :BEAMER_env: overlayarea
>    :BEAMER_OPT: {0.9\textwidth}{0.7\textheight}
>    :END:
>
> -->
>
> \begin{overlayarea}[{0.9\textwidth}{0.7\textheight}]
>
> Oh, hello, BEAMER_OPT automatically adds square brackets, how
> charming.

Optional arguments are in square brackets in LaTeX. Try %r instead, so
you can write:

  *** {0.9\textwidth}{0.7\textheight}   :B_overlayarea:
      :PROPERTIES:
      :BEAMER_env: overlayarea
      :END:

> Still, I wonder if there shouldn't be, e.g., %O for
> options-without-brackets. Because that was 45 minutes I spent NOT
> writing my slides :-|

Options without brackets are not options anymore, but random arguments.

> Also, side note, [1] seems not to document BEAMER_OPT for environments
> within a frame. Reading this page, you would think you could only use
> it for frames. I had to dig into the source code to find how to
> populate %o.

Would you mind suggesting a better phrasing?


Regards,

-- 
Nicolas Goaziou