(eval-when-compile
(require 'image-file))
(defgroup iimage nil
"Support for inline images."
:version "22.1"
:group 'image)
(defconst iimage-version "1.1")
(defvar iimage-mode nil)
(defvar iimage-mode-map nil)
(unless iimage-mode-map
(setq iimage-mode-map (make-sparse-keymap))
(define-key iimage-mode-map "\C-l" 'iimage-recenter))
(defun iimage-recenter (&optional arg)
"Re-draw images and recenter."
(interactive "P")
(iimage-mode-buffer 0)
(iimage-mode-buffer 1)
(recenter arg))
(defvar iimage-mode-image-filename-regex
(concat "[-+./_0-9a-zA-Z]+\\."
(regexp-opt (nconc (mapcar #'upcase
image-file-name-extensions)
image-file-name-extensions)
t)))
(defvar iimage-mode-image-regex-alist
`((,(concat "\\(`?file://\\|\\[\\[\\|<\\|`\\)?"
"\\(" iimage-mode-image-filename-regex "\\)"
"\\(\\]\\]\\|>\\|'\\)?") . 2))
"*Alist of filename REGEXP vs NUM.
Each element looks like (REGEXP . NUM).
NUM specifies which parenthesized expression in the regexp.
Examples of image filename regexps:
file://foo.png
`file://foo.png'
\\[\\[foo.gif]]
<foo.png>
foo.JPG
")
(defvar iimage-mode-image-search-path nil
"*List of directories to search for image files for iimage-mode.")
(defun turn-on-iimage-mode ()
"Unconditionally turn on iimage mode."
(interactive)
(iimage-mode 1))
(defun turn-off-iimage-mode ()
"Unconditionally turn off iimage mode."
(interactive)
(iimage-mode 0))
(if (fboundp 'locate-file)
(defalias 'iimage-locate-file 'locate-file)
(defun iimage-locate-file (filename path)
(locate-library filename t path)))
(defun iimage-mode-buffer (arg)
"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 buffer-read-only)
(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
(add-text-properties (match-beginning 0) (match-end 0)
(list 'display (create-image file)))
(remove-text-properties (match-beginning 0) (match-end 0)
'(display)))))))
(set-buffer-modified-p modp)))
(define-minor-mode iimage-mode
"Toggle inline image minor mode."
:group 'iimage :lighter " iImg" :keymap iimage-mode-map
(run-hooks 'iimage-mode-hook)
(iimage-mode-buffer iimage-mode))
(provide 'iimage)