On Sep 15, 2009, at 7:42 AM, Sebastian Rose wrote:
"Thomas S. Dye" <address@hidden> writes:
Thanks Sebastian. I appreciate the expert assistance. I have a
simple export
to Beamer working and was trying to implement automatic export of
columns, too.
The starred sections were going to be placeholders for the
columns heading
level when it wasn't used. I've found that skipping a headline
level in the
source causes the latex exporter to skip over subsequent inferior
levels, so it
isn't possible to assign a heading level to columns and then use
them or not as
the case requires.
You could try to add a class to `org-export-latex-classes'. For
such a
class, you can define a mapping for each headline level:
("my-beamer-class" "\\documentclass...\\usepackage{beamer}"
("\\chapter{%s}" . "\\my-chapter*{%s}")
("\\section{%s}" . "\\my-section*{%s}")
("\\subsection{%s}" . "\\my-subsection*{%s}")
("\\subsubsection{%s}" . "\\my-subsubsection*{%s}")))
I don't know if this is an easy thing to do, since I only did this
once
a long time ago.
But it seems it's worth a try.
See:
http://orgmode.org/manual/Sectioning-structure.html#Sectioning-structure
http://127.0.0.1/devel/org-notes/org-search.php?speedbar=1&main=/devel/org-notes/org-search.php
Sebastian
Yes, that is what I'm playing around with. I have a useful, but
simple export to beamer working. I've been trying without success
to implement beamer's \begin{columns} ... \end{columns}
environment. This is a fairly common construct in beamer that
occurs inside some frames but not in others. It seems natural to
put it like this:
("\\section{%s}" . "\\section{%s}")
("\\subsection{%s}" . "\\subsection{%s}")
("\\begin{frame}\\frametitle{%s}" "\\end{frame}" "\\begin{frame}\
\frametitle{%s}" "\\end{frame}")
("\\begin{columns}\\label{%s}" "\\end{columns}" "\\begin{columns}\
\label{%s}" "\\end{columns}")
where the \label{%s} puts the mandatory use of %s somewhere it won't
affect the LaTeX compilation.
The problem with this is that for frames where columns aren't
wanted, simply leaving out the fourth level in org means that
everything below it won't be exported.
This example results in an empty frame (Item 1 and Item 2 are
dropped from the export):
* Section head
** Subsection head
*** Frame title
***** Item 1
***** Item 2
It seems that a placeholder of some kind is needed if the columns
environment isn't wanted.
Initially, I explored using the definition for the unnumbered
sections, like this:
("\\begin{columns}\\label{%s}" "\\end{columns}" "%%\\begin{columns}\
\label{%s}" "%%\\end{columns}")
which would use a LaTeX comment as a placeholder. This won't work
because the switch for numbered/unnumbered sections is set at the
file level and not for individual instances.
Then, I thought to define a do-nothing environment in LaTeX
\newenvironment{nocolumns}{}{}
set it up in .emacs like this:
("\\begin{%s}" "\\end{%s}" "\\begin{%s}" "\\end{%s}")
and then put this in my .org file:
* Section head
** Subsection head
*** Frame title
**** nocolumns
***** Item 1
***** Item 2
But this doesn't work because %s doesn't expand in \\end{%s}. I get
\begin{nocolumns} ... \end{%s}, which LaTeX doesn't like.
So, I'm stumped for now, but still pleased to have a simple export
from org to beamer working, albeit one that produces frames without
columns.
All the best,
Tom
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