2 ;;; tm-image.el --- a tm-view content filter to display images in
3 ;;; XEmacs or Mule buffers
5 ;;; Copyright (C) 1995,1996 MORIOKA Tomohiko
6 ;;; Copyright (C) 1996 Dan Rich
8 ;;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
9 ;;; Dan Rich <drich@morpheus.corp.sgi.com>
10 ;;; Maintainer: MORIOKA Tomohiko <morioka@jaist.ac.jp>
11 ;;; Created: 1995/12/15
13 ;;; $Id: tm-image.el,v 7.0 1996/02/28 13:13:27 morioka Exp $
15 ;;; Keywords: mail, news, MIME, multimedia, image, picture
17 ;;; This file is part of tm (Tools for MIME).
19 ;;; This program is free software; you can redistribute it and/or
20 ;;; modify it under the terms of the GNU General Public License as
21 ;;; published by the Free Software Foundation; either version 2, or
22 ;;; (at your option) any later version.
24 ;;; This program is distributed in the hope that it will be useful,
25 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
26 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 ;;; General Public License for more details.
29 ;;; You should have received a copy of the GNU General Public License
30 ;;; along with This program. If not, write to the Free Software
31 ;;; Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
34 ;;; If you use this program with Mule, please install bitmap
35 ;;; extension package. It is available from
36 ;;; ftp://etlport.etl.go.jp/pub/mule/contrib/bitmap.tar.gz
42 (cond ((string-match "XEmacs" emacs-version)
44 (require 'annotations)
46 (set-alist 'mime-viewer/content-filter-alist
48 (if (featurep 'jpeg) ; Use built-in suport if available
49 (function mime-preview/filter-for-image/inline)
50 (function mime-preview/filter-for-image)
53 (set-alist 'mime-viewer/content-filter-alist
55 (if (featurep 'gif) ; Use built-in suport if available
56 (function mime-preview/filter-for-image/inline)
57 (function mime-preview/filter-for-image)
60 (set-alist 'mime-viewer/content-filter-alist
62 (if (featurep 'xpm) ; Use built-in suport if available
63 (function mime-preview/filter-for-image/inline)
64 (function mime-preview/filter-for-image)
67 (set-alist 'mime-viewer/content-filter-alist
68 "image/tiff" (function mime-preview/filter-for-image))
69 (set-alist 'mime-viewer/content-filter-alist
70 "image/x-tiff" (function mime-preview/filter-for-image))
72 (set-alist 'mime-viewer/content-filter-alist
73 "image/x-pic" (function mime-preview/filter-for-image))
75 (set-alist 'mime-viewer/content-filter-alist
76 "image/x-mag" (function mime-preview/filter-for-image))
78 (defvar tm-image/inline-image-types
79 '("image/jpeg" "image/gif" "image/tiff"
80 "image/x-tiff" "image/x-pic" "image/x-mag"
81 "image/x-xbm" "image/x-xpixmap"))
83 (defun bitmap-read-xbm (file)
86 (setq gl (make-glyph file))
87 (eq (image-instance-type (glyph-image-instance gl))
90 (make-annotation gl (point) 'text)
93 (defvar mime-viewer/image-converter-alist
94 '(("image/jpeg" . jpeg)
97 ("image/x-xpixmap" . xpm)
100 (defun image-read-file (ctype file)
101 (let ((minor (assoc-value ctype mime-viewer/image-converter-alist))
104 (setq gl (make-glyph (vector minor :file file)))
105 (eq (image-instance-type (glyph-image-instance gl))
108 (make-annotation gl (point) 'text)
111 (defvar mime-viewer/use-highlight-headers t)
113 (defvar mime-preview/x-face-function
114 (if (and mime-viewer/use-highlight-headers
116 (require 'highlight-headers)
117 highlight-headers-hack-x-face-p
119 (function mime-preview/x-face-function-use-highlight-headers)
120 (function mime-preview/x-face-function-for-xemacs)
126 (defvar tm-image/inline-image-types '("image/x-mag" "image/x-xbm"))
128 (defvar mime-preview/x-face-function
129 (function mime-preview/x-face-function-for-mule))
132 (defvar mime-viewer/shell-command "/bin/sh")
133 (defvar mime-viewer/shell-arguments '("-c"))
135 (defvar mime-viewer/graphic-converter-alist
136 '(("image/jpeg" . "djpeg -color 256 < %s | ppmtoxpm > %s")
137 ("image/gif" . "giftopnm < %s | ppmtoxpm > %s")
138 ("image/tiff" . "tifftopnm < %s | ppmquant 256 | ppmtoxpm > %s")
139 ("image/x-tiff" . "tifftopnm < %s | ppmquant 256 | ppmtoxpm > %s")
140 ("image/x-pic" . "pictoppm < %s | ppmquant 256 | ppmtoxpm > %s")
141 ("image/x-mag" . "magtoppm < %s | ppmtoxpm > %s")
148 (defvar mime-viewer/x-face-to-xbm-command
149 (concat mime-viewer/x-face-to-pbm-command " | pbmtoxbm"))
151 (add-hook 'mime-viewer/content-header-filter-hook
152 mime-preview/x-face-function)
154 (defun mime-preview/x-face-function-use-highlight-headers ()
155 (highlight-headers (point-min) (re-search-forward "^$" nil t) t)
158 (defun mime-preview/x-face-function-for-xemacs ()
160 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
161 (goto-char (point-min))
162 (if (re-search-forward "^X-Face:[ \t]*" nil t)
163 (let ((beg (match-end 0))
164 (end (rfc822/field-end))
166 (make-temp-name (expand-file-name "tmxf" mime/tmp-dir))
169 beg end "sh" nil 0 nil
172 mime-viewer/x-face-to-xbm-command
174 (while (not (file-exists-p xbm-file)))
175 (delete-region beg end)
176 (bitmap-read-xbm xbm-file)
178 (delete-file xbm-file)
182 (defun mime-preview/x-face-function-for-mule ()
184 (narrow-to-region (point-min)
185 (if (re-search-forward "^$" nil t)
189 (goto-char (point-min))
190 (if (re-search-forward "^X-Face:[ \t]*" nil t)
191 (let ((p (match-beginning 0))
193 (end (rfc822/field-end))
196 (make-temp-name (expand-file-name "tmxf" mime/tmp-dir))
199 (if (< end (point-max))
204 beg end "sh" nil 0 nil
207 mime-viewer/x-face-to-xbm-command
209 (not (file-exists-p xbm-file))
212 (narrow-to-region p end)
213 (delete-region p end)
217 (bitmap-read-xbm xbm-file)
223 (string-equal (buffer-file-name buf) xbm-file)
226 (= (point-min) (point-max))
230 (while (re-search-forward "^." nil t)
231 (goto-char (match-beginning 0))
235 (delete-file xbm-file)
240 ;;; @ content filter for images
242 ;; (for XEmacs 19.12 or later)
244 (defun mime-preview/filter-for-image (ctype params encoding)
245 (let* ((mode mime::preview/original-major-mode)
246 (m (assq mode mime-viewer/code-converter-alist))
247 (filter (assoc-value ctype mime-viewer/graphic-converter-alist))
250 (let* ((beg (point-min)) (end (point-max))
252 (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
253 (xbm-file (concat orig-file ".xbm"))
255 ;;(remove-text-properties beg end '(face nil))
256 (mime/decode-region encoding beg end)
257 (write-region (point-min)(point-max) orig-file)
258 (delete-region (point-min)(point-max))
259 (message "Now translating, please wait...")
260 (apply (function call-process)
261 mime-viewer/shell-command nil nil nil
262 (append mime-viewer/shell-arguments
263 (list (format filter orig-file xbm-file)))
265 (setq gl (make-glyph xbm-file))
266 (setq annot (make-annotation gl (point) 'text))
268 (delete-file orig-file)
270 (delete-file xbm-file)
272 (goto-char (point-max))
274 (message "Translation done.")
276 (message (format "%s is not supported." ctype))
280 ;;; @ content filter for support in-line image types
282 ;; (for XEmacs 19.14 or later)
284 (defun mime-preview/filter-for-image/inline (ctype params encoding)
285 (let* ((mode mime::preview/original-major-mode)
286 (m (assq mode mime-viewer/code-converter-alist))
287 (charset (assoc "charset" params))
288 (beg (point-min)) (end (point-max))
289 (image-file (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
291 (remove-text-properties beg end '(face nil))
292 (mime/decode-region encoding beg end)
293 (write-region (point-min)(point-max) image-file)
294 (delete-region (point-min)(point-max))
295 (image-read-file ctype image-file)
296 (delete-file image-file)
301 ;;; @ content filter for xbm
304 (defun mime-preview/filter-for-image/xbm (ctype params encoding)
305 (let* ((mode mime::preview/original-major-mode)
306 (m (assq mode mime-viewer/code-converter-alist))
307 (charset (assoc "charset" params))
308 (beg (point-min)) (end (point-max))
309 (xbm-file (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
311 (remove-text-properties beg end '(face nil))
312 (mime/decode-region encoding beg end)
313 (write-region (point-min)(point-max) xbm-file)
314 (delete-region (point-min)(point-max))
315 (bitmap-read-xbm xbm-file)
316 (delete-file xbm-file)
319 (set-alist 'mime-viewer/content-filter-alist
320 "image/xbm" (function mime-preview/filter-for-image/xbm))
322 (set-alist 'mime-viewer/content-filter-alist
323 "image/x-xbm" (function mime-preview/filter-for-image/xbm))
331 (or (member ctype mime-viewer/default-showing-Content-Type-list)
332 (setq mime-viewer/default-showing-Content-Type-list
334 mime-viewer/default-showing-Content-Type-list))
336 tm-image/inline-image-types)
344 ;;; tm-image.el ends here