• State "DONE" from "STARTED" 2010-08-29 Sun 19:00
• State "STARTED" from "PROPOSED" 2010-03-15 Mon 17:21
• State "PROPOSED" from "" 2010-03-15 Mon 17:15

This functionality was implemented by Carsten. See `org-toggle-inline-images'.

A proof-of-principle implementation of this is below. It uses org-babel-after-execute-hook to refresh the inline image displays in the whole buffer. This means that the code for plots and latex fragments can be edited and then the graphic updated with C-c C-c.

However, after looking briefly at Nicolas Girard's work on org-icons.el, I wonder whether it would be nicer to implement this using the font-lock machinery, similar to how the org icons are implemented.

(defun ded/iimage-mode-buffer (arg &optional refresh)
"Display/undisplay images.
With numeric ARG, display the images if and only if ARG is positive."
  (interactive)
  (let ((ing (if (numberp arg)
                 (> arg 0)
               iimage-mode))
        (modp (buffer-modified-p (current-buffer)))
        file img)
    (save-excursion
      (goto-char (point-min))
      (dolist (pair iimage-mode-image-regex-alist)
        (while (re-search-forward (car pair) nil t)
          (if (and (setq file (match-string (cdr pair)))
                   (setq file (iimage-locate-file file
                                   (cons default-directory
                                         iimage-mode-image-search-path))))
              (if ing
                  (let ((img (create-image file)))
                    (add-text-properties (match-beginning 0) (match-end 0) (list 'display img))
                    (if refresh (image-refresh img)))
                (remove-text-properties (match-beginning 0) (match-end 0) '(display)))))))
    (set-buffer-modified-p modp)))

(defun ded/org-iimage-refresh ()
  (interactive)
  (redisplay t)
  (set-face-underline-p 'org-link nil)
  (ded/iimage-mode-buffer 1 'refresh)
  (redisplay t))

(add-hook 'org-babel-after-execute-hook 'ded/org-iimage-refresh)