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 7.9 1996/07/08 05:44:22 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
35 ;;; etl8x16-bitmap.bdf font included in tl package.
42 (require 'annotations)
44 (set-alist 'mime-viewer/content-filter-alist
46 (if (featurep 'jpeg) ; Use built-in suport if available
47 (function mime-preview/filter-for-inline-image)
48 (function mime-preview/filter-for-image)
51 (set-alist 'mime-viewer/content-filter-alist
53 (if (featurep 'gif) ; Use built-in suport if available
54 (function mime-preview/filter-for-inline-image)
55 (function mime-preview/filter-for-image)
58 (set-alist 'mime-viewer/content-filter-alist
60 (if (featurep 'xpm) ; Use built-in suport if available
61 (function mime-preview/filter-for-inline-image)
62 (function mime-preview/filter-for-image)
65 (set-alist 'mime-viewer/content-filter-alist
66 "image/tiff" (function mime-preview/filter-for-image))
67 (set-alist 'mime-viewer/content-filter-alist
68 "image/x-tiff" (function mime-preview/filter-for-image))
70 (set-alist 'mime-viewer/content-filter-alist
71 "image/x-pic" (function mime-preview/filter-for-image))
73 (set-alist 'mime-viewer/content-filter-alist
74 "image/x-mag" (function mime-preview/filter-for-image))
76 (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 '("application/postscript")
87 (defun bitmap-read-xbm (file)
90 (setq gl (make-glyph file))
91 (eq (image-instance-type (glyph-image-instance gl))
94 (make-annotation gl (point) 'text)
97 (defvar mime-viewer/image-converter-alist
98 '(("image/jpeg" . jpeg)
100 ("image/x-png" . png)
101 ("image/x-xpixmap" . xpm)
104 (defvar mime-viewer/use-highlight-headers t)
106 (defvar mime-preview/x-face-function
107 (if (and mime-viewer/use-highlight-headers
109 (require 'highlight-headers)
110 highlight-headers-hack-x-face-p
112 (function mime-preview/x-face-function-use-highlight-headers)
113 (function mime-preview/x-face-function-for-xemacs)
119 (defvar tm-image/inline-image-types '("image/x-mag" "image/x-xbm"))
121 (defvar mime-preview/x-face-function (function bitmap-decode-x-face))
124 (defvar mime-viewer/shell-command "/bin/sh")
125 (defvar mime-viewer/shell-arguments '("-c"))
127 (defvar mime-viewer/graphic-converter-alist
128 '(("image/jpeg" . "djpeg -color 256 < %s | ppmtoxpm > %s")
129 ("image/gif" . "giftopnm < %s | ppmtoxpm > %s")
130 ("image/tiff" . "tifftopnm < %s | ppmquant 256 | ppmtoxpm > %s")
131 ("image/x-tiff" . "tifftopnm < %s | ppmquant 256 | ppmtoxpm > %s")
132 ("image/x-pic" . "pictoppm < %s | ppmquant 256 | ppmtoxpm > %s")
133 ("image/x-mag" . "magtoppm < %s | ppmtoxpm > %s")
140 (defvar mime-viewer/x-face-to-xbm-command
141 (concat mime-viewer/x-face-to-pbm-command " | pbmtoxbm"))
143 (if mime-preview/x-face-function
144 (add-hook 'mime-viewer/content-header-filter-hook
145 mime-preview/x-face-function)
148 (defun mime-preview/x-face-function-use-highlight-headers ()
149 (highlight-headers (point-min) (re-search-forward "^$" nil t) t)
152 (defun mime-preview/x-face-function-for-xemacs ()
154 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
155 (goto-char (point-min))
156 (if (re-search-forward "^X-Face:[ \t]*" nil t)
157 (let ((beg (match-end 0))
158 (end (rfc822/field-end))
160 (make-temp-name (expand-file-name "tmxf" mime/tmp-dir))
163 beg end "sh" nil 0 nil
166 mime-viewer/x-face-to-xbm-command
168 (while (not (file-exists-p xbm-file)))
169 (delete-region beg end)
170 (bitmap-read-xbm xbm-file)
172 (delete-file xbm-file)
177 ;;; @ content filter for images
179 ;; (for XEmacs 19.12 or later)
181 (defun mime-preview/filter-for-image (ctype params encoding)
182 (let* ((mode mime::preview/original-major-mode)
183 (m (assq mode mime-viewer/code-converter-alist))
184 (filter (assoc-value ctype mime-viewer/graphic-converter-alist))
187 (let* ((beg (point-min)) (end (point-max))
189 (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
190 (xbm-file (concat orig-file ".xbm"))
192 ;;(remove-text-properties beg end '(face nil))
193 (mime-decode-region beg end encoding)
194 (write-region (point-min)(point-max) orig-file)
195 (delete-region (point-min)(point-max))
196 (message "Now translating, please wait...")
197 (apply (function call-process)
198 mime-viewer/shell-command nil nil nil
199 (append mime-viewer/shell-arguments
200 (list (format filter orig-file xbm-file)))
202 (setq gl (make-glyph xbm-file))
203 (setq annot (make-annotation gl (point) 'text))
205 (delete-file orig-file)
207 (delete-file xbm-file)
209 (goto-char (point-max))
211 (message "Translation done.")
213 (message (format "%s is not supported." ctype))
217 ;;; @ content filter for xbm
220 (defun mime-preview/filter-for-image/xbm (ctype params encoding)
221 (let* ((mode mime::preview/original-major-mode)
222 (m (assq mode mime-viewer/code-converter-alist))
223 (charset (assoc "charset" params))
224 (beg (point-min)) (end (point-max))
225 (xbm-file (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
227 (remove-text-properties beg end '(face nil))
228 (mime-decode-region beg end encoding)
229 (write-region (point-min)(point-max) xbm-file)
230 (delete-region (point-min)(point-max))
231 (bitmap-read-xbm xbm-file)
232 (delete-file xbm-file)
235 (set-alist 'mime-viewer/content-filter-alist
236 "image/xbm" (function mime-preview/filter-for-image/xbm))
238 (set-alist 'mime-viewer/content-filter-alist
239 "image/x-xbm" (function mime-preview/filter-for-image/xbm))
242 ;;; @ content filter for support in-line image types
244 ;; (for XEmacs 19.14 or later)
246 (defun mime-preview/filter-for-inline-image (ctype params encoding)
247 (let* ((mode mime::preview/original-major-mode)
248 (m (assq mode mime-viewer/code-converter-alist))
249 (charset (assoc "charset" params))
250 (beg (point-min)) (end (point-max))
252 (remove-text-properties beg end '(face nil))
253 (mime-decode-region beg end encoding)
254 (let ((data (buffer-string))
255 (minor (assoc-value ctype mime-viewer/image-converter-alist))
257 (delete-region (point-min)(point-max))
259 (setq gl (make-glyph (vector minor :data data)))
260 (eq (image-instance-type (glyph-image-instance gl))
263 (make-annotation gl (point) 'text)
269 ;;; @ content filter for Postscript
271 ;; (for XEmacs 19.14 or later)
273 (defun mime-preview/filter-for-application/postscript (ctype params encoding)
274 (let* ((mode mime::preview/original-major-mode)
275 (m (assq mode mime-viewer/code-converter-alist))
276 (beg (point-min)) (end (point-max))
277 (file-base (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
278 (ps-file (concat file-base ".ps"))
279 (gif-file (concat file-base ".gif"))
281 (remove-text-properties beg end '(face nil))
282 (mime-decode-region beg end encoding)
283 (write-region (point-min)(point-max) ps-file)
284 (delete-region (point-min)(point-max))
285 (call-process "pstogif" nil nil nil ps-file)
288 (setq gl (make-glyph (vector 'gif :file gif-file)))
289 (eq (image-instance-type (glyph-image-instance gl))
292 (make-annotation gl (point) 'text)
294 (delete-file ps-file)
295 (delete-file gif-file)
298 (set-alist 'mime-viewer/content-filter-alist
299 "application/postscript"
300 (function mime-preview/filter-for-application/postscript))
308 (or (member ctype mime-viewer/default-showing-Content-Type-list)
309 (setq mime-viewer/default-showing-Content-Type-list
311 mime-viewer/default-showing-Content-Type-list))
313 tm-image/inline-image-types)
321 ;;; tm-image.el ends here