--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/tm/tm-image.el	Mon Aug 13 08:46:56 2007 +0200
@@ -0,0 +1,292 @@
+;;; tm-image.el --- tm-view filter to display images in XEmacs or MULE buffers
+
+;; Copyright (C) 1995,1996 MORIOKA Tomohiko
+;; Copyright (C) 1996 Dan Rich
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;;         Dan Rich <drich@morpheus.corp.sgi.com>
+;; Maintainer: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Created: 1995/12/15
+;; Version: $Id: tm-image.el,v 1.1.1.1 1996/12/18 03:55:32 steve Exp $
+
+;; Keywords: mail, news, MIME, multimedia, image, picture, X-Face
+
+;; This file is part of tm (Tools for MIME).
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU General Public License as
+;; published by the Free Software Foundation; either version 2, or (at
+;; your option) any later version.
+
+;; This program is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program; see the file COPYING.  If not, write to
+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+;;	If you use this program with MULE, please install
+;;	etl8x16-bitmap.bdf font included in tl package.
+
+;;; Code:
+
+(require 'tm-view)
+
+(cond (running-xemacs
+       (require 'annotations)
+       
+       (set-alist 'mime-viewer/content-filter-alist
+		  "image/jpeg"
+		  (if (featurep 'jpeg) ; Use built-in suport if available
+		      (function mime-preview/filter-for-inline-image)
+		    (function mime-preview/filter-for-image)
+		    ))
+       
+       (set-alist 'mime-viewer/content-filter-alist
+		  "image/gif"
+		  (if (featurep 'gif) ; Use built-in suport if available
+		      (function mime-preview/filter-for-inline-image)
+		    (function mime-preview/filter-for-image)
+		    ))
+       
+       (set-alist 'mime-viewer/content-filter-alist
+		  "image/x-xpixmap"
+		  (if (featurep 'xpm) ; Use built-in suport if available
+		      (function mime-preview/filter-for-inline-image)
+		    (function mime-preview/filter-for-image)
+		    ))
+       
+       (set-alist 'mime-viewer/content-filter-alist
+		  "image/tiff" (function mime-preview/filter-for-image))
+       (set-alist 'mime-viewer/content-filter-alist
+		  "image/x-tiff" (function mime-preview/filter-for-image))
+       
+       (set-alist 'mime-viewer/content-filter-alist
+		  "image/x-pic" (function mime-preview/filter-for-image))
+       
+       (set-alist 'mime-viewer/content-filter-alist
+		  "image/x-mag" (function mime-preview/filter-for-image))
+       
+       (defvar tm-image/inline-image-types
+	 (if (featurep 'gif)
+	     (nconc
+	      '("image/jpeg" "image/gif" "image/tiff"
+		"image/x-tiff" "image/x-pic" "image/x-mag"
+		"image/x-xbm" "image/x-xpixmap")
+	      (if (featurep 'gif)
+		  '("application/postscript")
+		)
+	      )))
+       
+       (defun bitmap-insert-xbm-file (file)
+	 (let (gl)
+	   (while (progn
+		    (setq gl (make-glyph file))
+		    (eq (image-instance-type (glyph-image-instance gl))
+			'text)
+		    ))
+	   (make-annotation gl (point) 'text)
+	   ))
+       
+       (defvar mime-viewer/image-converter-alist
+	 '(("image/jpeg"      . jpeg)
+	   ("image/gif"       . gif)
+	   ("image/x-png"     . png)
+	   ("image/x-xpixmap" . xpm)
+	   ))
+       
+       (defvar mime-preview/x-face-function
+	 (function mime-preview/x-face-function-use-highlight-headers))
+       
+       (autoload 'highlight-headers "highlight-headers")
+       
+       (defun mime-preview/x-face-function-use-highlight-headers ()
+	 (highlight-headers (point-min) (re-search-forward "^$" nil t) t)
+	 )
+       )
+      ((featurep 'mule)
+       ;; for MULE 2.* or mule merged EMACS
+       (require 'x-face-mule)
+       
+       (defvar tm-image/inline-image-types '("image/x-mag" "image/x-xbm"))
+       
+       (defvar mime-preview/x-face-function
+	 (function x-face-decode-message-header))
+       ))
+
+(defvar mime-viewer/shell-command "/bin/sh")
+(defvar mime-viewer/shell-arguments '("-c"))
+
+(defvar mime-viewer/ps-to-gif-command "pstogif")
+
+(defvar mime-viewer/graphic-converter-alist
+  '(("image/jpeg"   . "djpeg -color 256 < %s | ppmtoxpm > %s")
+    ("image/gif"    . "giftopnm < %s | ppmtoxpm > %s")
+    ("image/tiff"   . "tifftopnm < %s | ppmquant 256 | ppmtoxpm > %s")
+    ("image/x-tiff" . "tifftopnm < %s | ppmquant 256 | ppmtoxpm > %s")
+    ("image/x-pic"  . "pictoppm < %s | ppmquant 256 | ppmtoxpm > %s")
+    ("image/x-mag"  . "magtoppm < %s | ppmtoxpm > %s")
+    ))
+
+
+;;; @ X-Face
+;;;
+
+(defvar mime-viewer/x-face-to-xbm-command
+  (concat mime-viewer/x-face-to-pbm-command " | pbmtoxbm"))
+
+(if mime-preview/x-face-function
+    (add-hook 'mime-viewer/content-header-filter-hook
+	      mime-preview/x-face-function)
+  )
+
+
+;;; @ content filter for images
+;;;
+;;    (for XEmacs 19.12 or later)
+
+(defun mime-preview/filter-for-image (ctype params encoding)
+  (let* ((mode mime::preview/original-major-mode)
+	 (m (assq mode mime-viewer/code-converter-alist))
+	 (filter (assoc-value ctype mime-viewer/graphic-converter-alist))
+	 )
+    (if filter
+	(let* ((beg (point-min)) (end (point-max))
+	       (orig-file
+		(make-temp-name (expand-file-name "tm" mime/tmp-dir)))
+	       (xbm-file (concat orig-file ".xbm"))
+	       gl annot)
+	  ;;(remove-text-properties beg end '(face nil))
+	  (mime-decode-region beg end encoding)
+	  (write-region (point-min)(point-max) orig-file)
+	  (delete-region (point-min)(point-max))
+	  (message "Now translating, please wait...")
+	  (apply (function call-process)
+		 mime-viewer/shell-command nil nil nil
+		 (append mime-viewer/shell-arguments
+			 (list (format filter orig-file xbm-file)))
+		 )
+	  (setq gl (make-glyph xbm-file))
+	  (setq annot (make-annotation gl (point) 'text))
+	  (unwind-protect
+	      (delete-file orig-file)
+	    (condition-case nil
+		(delete-file xbm-file)
+	      (error nil)))
+	  (goto-char (point-max))
+	  (insert "\n")
+	  (message "Translation done.")
+	  )
+      (message (format "%s is not supported." ctype))
+      )))
+
+
+;;; @ content filter for xbm
+;;;
+
+(defun mime-preview/filter-for-image/xbm (ctype params encoding)
+  (let* ((mode mime::preview/original-major-mode)
+	 (m (assq mode mime-viewer/code-converter-alist))
+	 (charset (assoc "charset" params))
+	 (beg (point-min)) (end (point-max))
+	 (xbm-file (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
+	 )
+    (remove-text-properties beg end '(face nil))
+    (mime-decode-region beg end encoding)
+    (write-region (point-min)(point-max) xbm-file)
+    (delete-region (point-min)(point-max))
+    (bitmap-insert-xbm-file xbm-file)
+    (delete-file xbm-file)
+    ))
+
+(set-alist 'mime-viewer/content-filter-alist
+	   "image/xbm" (function mime-preview/filter-for-image/xbm))
+
+(set-alist 'mime-viewer/content-filter-alist
+	   "image/x-xbm" (function mime-preview/filter-for-image/xbm))
+
+
+;;; @ content filter for support in-line image types
+;;;
+;;    (for XEmacs 19.14 or later)
+
+(defun mime-preview/filter-for-inline-image (ctype params encoding)
+  (let* ((mode mime::preview/original-major-mode)
+	 (m (assq mode mime-viewer/code-converter-alist))
+	 (charset (assoc "charset" params))
+	 (beg (point-min)) (end (point-max))
+	 )
+    (remove-text-properties beg end '(face nil))
+    (mime-decode-region beg end encoding)
+    (let ((data (buffer-string))
+	  (minor (assoc-value ctype mime-viewer/image-converter-alist))
+	  gl)
+      (delete-region (point-min)(point-max))
+      (while (progn
+	       (setq gl (make-glyph (vector minor :data data)))
+	       (eq (image-instance-type (glyph-image-instance gl))
+		   'text)
+	       ))
+      (make-annotation gl (point) 'text)
+      )
+    (insert "\n")
+    ))
+
+
+;;; @ content filter for Postscript
+;;;
+;;    (for XEmacs 19.14 or later)
+
+(defun mime-preview/filter-for-application/postscript (ctype params encoding)
+  (let* ((mode mime::preview/original-major-mode)
+	 (m (assq mode mime-viewer/code-converter-alist))
+	 (beg (point-min)) (end (point-max))
+	 (file-base (make-temp-name (expand-file-name "tm" mime/tmp-dir)))
+	 (ps-file (concat file-base ".ps"))
+	 (gif-file (concat file-base ".gif"))
+	 )
+    (remove-text-properties beg end '(face nil))
+    (mime-decode-region beg end encoding)
+    (write-region (point-min)(point-max) ps-file) 
+    (delete-region (point-min)(point-max))
+    (call-process mime-viewer/ps-to-gif-command nil nil nil ps-file)
+    (let (gl)
+      (while (progn
+	       (setq gl (make-glyph (vector 'gif :file gif-file)))
+	       (eq (image-instance-type (glyph-image-instance gl))
+		   'text)
+	       ))
+      (make-annotation gl (point) 'text)
+      )
+    (delete-file ps-file)
+    (delete-file gif-file)
+    ))
+
+(set-alist 'mime-viewer/content-filter-alist
+	   "application/postscript"
+	   (function mime-preview/filter-for-application/postscript))
+
+
+;;; @ setting
+;;;
+
+(mapcar
+ (lambda (ctype)
+   (or (member ctype mime-viewer/default-showing-Content-Type-list)
+       (setq mime-viewer/default-showing-Content-Type-list
+	     (cons ctype
+		   mime-viewer/default-showing-Content-Type-list))
+       ))
+ tm-image/inline-image-types)
+
+
+;;; @ end
+;;;
+
+(provide 'tm-image)
+
+;;; tm-image.el ends here