Re: [TIP] Export to LaTeX and HTML with a watermark

["Thomas S. Dye" <tsd@tsdye.online>]

Nice!

This is the kind of thing I like to find here: 
https://orgmode.org/worg/org-hacks.html

Please consider adding it to Worg!

All the best,
Tom

Juan Manuel Macías writes:

> Hi,
>
> Recently, I needed to export a document to both LaTeX and HTML 
> with a
> watermark background. I came to write this little function (for 
> LaTeX,
> the 'draftwatermark' package is used; for html, a bit of CSS. 
> The
> optional arg `text' is the text of the watermark; by default 
> what is
> printed is "DRAFT"):
>
> #+begin_src org
>   ,#+begin_src emacs-lisp :exports results :results none
>     (defun my-watermark (&optional text)
>       (cond ((org-export-derived-backend-p 
>       org-export-current-backend 'latex)
> 	     (concat "#+LaTeX_Header:\\usepackage"
> 		     (if text
> 			 (format "[text=%s]" (replace-regexp-in-string " " "~" 
> text))
> 		       "")
> 		     "{draftwatermark}"))
> 	    ((org-export-derived-backend-p org-export-current-backend 
> 'html)
> 	     (concat "@@html:<p id=\"watermark\">"
> 		     (if text
> 			 (format "%s" text)
> 		       "DRAFT")
> 		     "</p>@@"))))
>
>   ,#+end_src
> #+end_src
>
> The CSS could be (source:
> https://stackoverflow.com/questions/68569/text-watermark-on-website-how-to-do-it):
>
> #+begin_src org
>   ,#+html_HEAD: <style>#watermark {color: #d0d0d0; font-size: 
>   200pt; -webkit-transform: rotate(-45deg); -moz-transform: 
>   rotate(-45deg); position: absolute; width: 100%; height: 100%; 
>   margin: 0; z-index: -1; left:-100px; top:-200px;}</style>
> #+end_src
>
> And then, this replacement macro:
>
> #+begin_src org
>   ,#+MACRO: wmark (eval (if (org-string-nw-p $1)(my-watermark 
>   $1)(my-watermark)))
> #+end_src
>
> And finally, an example:
>
> #+begin_src org
>   {{{wmark(Top secret!)}}}
>
>   Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
>   accumsan nisl.
>
>   (...)
> #+end_src
>
> Regards,
>
> Juan Manuel


--
Thomas S. Dye
https://tsdye.online/tsdye