Re: Sub-figures in Org Mode

[Jason Ross <jasonross1024@gmail.com>]

Hi Juan,

On 10/22/21 5:00 PM, Juan Manuel Macías wrote:
> Hi Jason,
> 
> Jason Ross <jasonross1024@gmail.com> writes:
> 
>> Are there any workarounds people use to create subfigures in Org Mode
>> when exporting to LaTeX? Example output:
> 
> In this thread I explain a procedure to export images as subfigures
> using org links: https://list.orgmode.org/87mty1an66.fsf@posteo.net/
> 
> Best regards,
> 
> Juan Manuel
> 

Those are some really clever solutions. I hadn't considered using a
dsl for figure options.

I'm looking at declaring a "figure" block the way you are, but
`org-element-map'ing over the links inside the block and processing them
with the "normal" link-handling machinery. That way, image options work
the same way in a subfigure as they do normally.

Here's what I'm messing with for the ConTeXt backend (this relies
on some changes to figure handling I haven't pushed yet):

#+begin_src elisp
(defun org-context--special-block-figure (orig-fun special-block 
contents info)
   (let ((type (org-element-property :type special-block)))
     (if (string= "figure" (downcase type))
         (let* ((attr (org-export-read-attribute :attr_context 
special-block))
                (links (org-element-map special-block 'link #'identity))
                (placefigure-options
                 (org-context--format-arguments
                  (org-context--get-placefigure-options special-block 
info)))
                (captionp
                 (mapcan
                  (lambda (link)
                    (let* ((parent (org-export-get-parent-element link))
                           (caption (org-string-nw-p 
(org-context--caption/label-string parent info))))
                      (and caption (list caption))))
                  links))
                (image-codes
                 (mapconcat
                  (lambda (link)
                    (let ((figure-string 
(org-context--get-link-figure-string link info)))
                      (if captionp
                        (let ((caption
                               (org-string-nw-p
                                (org-context--caption/label-string
                                 (org-export-get-parent-element link) 
info))))
                          (format "{%s}\n{%s}"
                                  figure-string (or caption "")))
                      (format "{%s}" figure-string)))

                    )
                  links
                  "\n"))
                (dimensions
                 (let* ((rows (plist-get attr :rows))
                        (cols (plist-get attr :cols))
                        (nlinks (length links)))
                   (if
                       (and rows cols)
                       (cons (string-to-number rows) (string-to-number 
cols))
                     (cons 1 nlinks))))
                combination-options)
           (if captionp
                (push (cons "alternative" "text") combination-options)
             (push (cons "alternative" "label") combination-options))
           (push (cons "nx" (format "%s" (cdr dimensions))) 
combination-options)
           (push (cons "ny" (format "%s" (car dimensions))) 
combination-options)
           (message (format "%S" combination-options))
           (format "\\startplacefigure[%s]
\\startcombination[%s]
%s
\\stopcombination
\\stopplacefigure"
                   placefigure-options
                   (org-context--format-arguments combination-options)
                   image-codes))
       (funcall orig-fun special-block contents info))))

(advice-add 'org-context-special-block :around 
#'org-context--special-block-figure)

#+end_src