Preprocessor to generate LaTeX/beamer files
Project description
beamer_gen
Preprocessor to generate LaTeX-beamer code from a more compact language.
The needs for a new sub language were:
- compactness: so as to remove type as few formatting informations as possible,
- expressiveness: allow to format most beamer frames with clear and short syntax,
- flexibility: allowance for LaTeX without to much overhead.
In TeX environments, are enclosed into \begin{env}
and \end{env}
tags which makes it unambiguous but requires duplicating the name of the environment.
Here, for compactness, the choice is made instead to use indentation as environment markers.
Indentation is therefore significant and compulsory.
Features
beamer_gen
code has shortcuts for the following current LaTeX/beamer features:
- sections, using
s Section title
, - frames, using
+ Frame title
, - blocks, using
b Block title
, - items, using
- item text
with automatic environment creation, - columns, using
c{ratio}
(ratio relative to\columnwidth
) with automatic environment creation, - figures, using
f{ratio}{filename}
(ratio relative to\columnwidth
).
Beamer overlay directives (<...>
) are supported for frames, blocks, figures and items.
Frames can also have options ([...]
), in which case, they must be specified after an optional beamer directive (+<+->[fragile] Title
for instance).
Columns can also have a placement option (e.g. [c]
), which needs to be specified before the size.
Everything else is reproduced verbatim.
Usage
Usage is straightforward:
usage: beamer_gen.py [-h] filename [filename ...]
Generate LaTeX/beamer files from a stub.
positional arguments:
filename name of the file to be processed.
optional arguments:
-h, --help show this help message and exit
Each file is processed by creating a new file with the original extension replaced by .tex
.
Example
The following source:
+[allowframebreaks] Example 1
b<+-> Example block
- first item
- subitem
- other subitem
- second item
b<+-> second block
c{0.4}
f<3->{0.8}{figure1.png}
c[t]{0.6}
Some generic text:
- and items
translates into:
\begin{frame}[allowframebreaks]
\frametitle{Example 1}
\begin{block}<+->{Example block}
\begin{itemize}
\item first item
\begin{itemize}
\item subitem
\item other subitem
\end{itemize}
\item second item
\end{itemize}
\end{block}
\begin{block}<+->{second block}
\begin{columns}
\column{0.4\columnwidth}
\includegraphics<3->[width=0.8\columnwidth]{figure1.png}
\column[t]{0.6\columnwidth}
Some generic text:
\begin{itemize}
\item and items
\end{itemize}
\end{columns}
\end{block}
\end{frame}
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