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From: "Juan Manuel Macías" <maciaschain@posteo.net>
To: orgmode <emacs-orgmode@gnu.org>
Subject: [tip] Insert arbitrary LaTeX code at the beginning of any float environment
Date: Sun, 08 May 2022 22:22:16 +0000	[thread overview]
Message-ID: <87o807r7fr.fsf@posteo.net> (raw)

Hi all,

If we want to introduce arbitrary LaTeX code at the very beginning of a
float environment, apart from the usual tricks of putting the code in
:caption or :placement, this solution I describe here is more from the
LaTeX side. I thik its advantages are more control and consistency from
the point of view of LaTeX, and the possibility of introducing code of a
certain complexity.

Well, you have to write some LaTeX code for the preamble, but it's
really not much :)

We have to define a global command \myenvcode{<arbitrary code>} (if we
want to add the code to all document floats environments), and also a
'Myenvcode' environment, with the same argument. The etoolbox LaTeX
package provides a number of hooks: \AtBeginEnvironment,
\AtEndEnvironment, etc., but if we want our arbitrary code to be at the
very beginning of the environment, it's safer to use the \@floatboxreset
hook. So, the code that we would have to add to our preamble would be (I
prefer to define the command and environment using the xparse syntax):

#+NAME: preamble
#+begin_src latex :exports none
  \usepackage{xparse}

  \makeatletter
  \def\my@envcode{}
  \NewDocumentCommand{\myenvcode}{+m}{%
    \def\my@envcode{#1}}
  \g@addto@macro\@floatboxreset{\my@envcode}
  \makeatother

  \NewDocumentEnvironment{Myenvcode}{+m}{%
    \IfNoValueF{#1}{\myenvcode{#1}}}
  {\par}
#+end_src

#+begin_src latex :noweb yes :results raw
,#+LaTeX_HEADER: <<preamble>>
#+end_src

And here a few examples:

#+ATTR_LaTeX: :options {\centering\fbox{Code before a image}\par\vspace{1ex}}
#+begin_Myenvcode
#+CAPTION: This is a image
#+ATTR_LaTeX: :width .5\linewidth :placement [h]
[[file:example-image-a.jpg]]
#+end_Myenvcode

#+ATTR_LaTeX: :options {\captionsetup{font={color=red}}}
#+begin_Myenvcode
#+CAPTION: This is a image
#+ATTR_LaTeX: :width .5\linewidth :placement [h]
[[file:example-image-b.jpg]]
#+end_Myenvcode

#+latex: \myenvcode{{\centering\fbox{Code before a table}\par\vspace{1ex}}}
#+CAPTION: This is a table
#+ATTR_LaTeX: :placement [h] :booktabs t
| a | b | c | d | f |
|---+---+---+---+---|
| 1 | 2 | 3 | 4 | 5 |

#+latex: \myenvcode{}

Best regards,

Juan Manuel 


             reply	other threads:[~2022-05-08 22:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-08 22:22 Juan Manuel Macías [this message]
2022-05-09 12:47 ` Ihor Radchenko
2022-05-09 13:15   ` Eric S Fraga
2022-05-09 13:51     ` Ihor Radchenko
2022-05-09 14:01   ` Juan Manuel Macías
2022-05-09 14:14     ` Eric S Fraga

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