;;; mime-image.el --- mime-view filter to display images
-;; Copyright (C) 1995,1996,1997 MORIOKA Tomohiko
+;; Copyright (C) 1995,1996,1997,1998 MORIOKA Tomohiko
;; Copyright (C) 1996 Dan Rich
;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Dan Rich <drich@morpheus.corp.sgi.com>
+;; Dan Rich <drich@morpheus.corp.sgi.com>
+;; Daiki Ueno <ueno@ueda.info.waseda.ac.jp>
+;; Katsumi Yamaoka <yamaoka@jpl.org>
;; Maintainer: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Created: 1995/12/15
;; Renamed: 1997/2/21 from tm-image.el
-;; Version:
-;; $Id: mime-image.el,v 0.2 1997-02-28 02:22:03 tmorioka Exp $
;; Keywords: image, picture, X-Face, MIME, multimedia, mail, news
-;; This file is part of XEmacs.
+;; This file is part of SEMI (Showy Emacs MIME Interfaces).
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;;; Code:
-(require 'mime-view)
-(require 'alist)
+(eval-when-compile (require 'cl))
-(cond (running-xemacs
- (require 'images)
-
- (defun-maybe image-inline-p (format)
- (or (memq format image-native-formats)
- (find-if (function
- (lambda (native)
- (image-converter-chain format native)
- ))
- image-native-formats)
- ))
-
- (image-register-netpbm-utilities)
- (image-register-converter 'pic 'ppm "pictoppm")
- (image-register-converter 'mag 'ppm "magtoppm")
-
- (defun bitmap-insert-xbm-file (file)
- (let ((gl (make-glyph (list (cons 'x file))))
- (e (make-extent (point) (point)))
- )
- (set-extent-end-glyph e gl)
- ))
-
- ;;
- ;; X-Face
- ;;
- (autoload 'highlight-headers "highlight-headers")
-
- (defun mime-preview/x-face-function-use-highlight-headers ()
- (highlight-headers (point-min) (re-search-forward "^$" nil t) t)
- )
-
- (add-hook 'mime-view-content-header-filter-hook
- 'mime-preview/x-face-function-use-highlight-headers)
-
- )
- ((featurep 'mule)
- ;; for MULE 2.* or mule merged EMACS
- (require 'x-face-mule)
-
- (defvar image-native-formats '(xbm))
-
- (defun-maybe image-inline-p (format)
- (memq format image-native-formats)
- )
-
- (defun-maybe image-normalize (format data)
- (and (eq format 'xbm)
- (vector 'xbm ':data data)
- ))
-
- ;;
- ;; X-Face
- ;;
- (if (file-installed-p uncompface-program exec-path)
- (add-hook 'mime-view-content-header-filter-hook
- 'x-face-decode-message-header)
- )
- ))
-
-(or (fboundp 'image-invalid-glyph-p)
- (defsubst image-invalid-glyph-p (glyph)
- (or (null (aref glyph 0))
- (null (aref glyph 2))
- (equal (aref glyph 2) "")
- ))
- )
-
-(defvar mime-view-image-converter-alist nil)
-
-(mapcar (function
- (lambda (rule)
- (let ((ctype (car rule))
- (format (cdr rule))
- )
- (if (image-inline-p format)
- (progn
- (set-alist 'mime-view-content-filter-alist
- ctype
- (function mime-preview/filter-for-image))
- (set-alist 'mime-view-image-converter-alist
- ctype format)
- (add-to-list
- 'mime-view-default-showing-Content-Type-list
- ctype)
- )
- ))))
- '(("image/jpeg" . jpeg)
- ("image/gif" . gif)
- ("image/tiff" . tiff)
- ("image/x-tiff" . tiff)
- ("image/xbm" . xbm)
- ("image/x-xbm" . xbm)
- ("image/x-xpixmap" . xpm)
- ("image/x-pic" . pic)
- ("image/x-mag" . mag)
- ))
-
-(defvar mime-view-ps-to-gif-command "pstogif")
+(eval-when-compile (require 'static))
+(require 'mime-view)
+(require 'alist)
+(require 'path-util)
+
+(defsubst mime-image-normalize-xbm-buffer (buffer)
+ (save-excursion
+ (set-buffer buffer)
+ (let ((case-fold-search t) width height xbytes right margin)
+ (goto-char (point-min))
+ (or (re-search-forward "_width[\t ]+\\([0-9]+\\)" nil t)
+ (error "!! Illegal xbm file format" (current-buffer)))
+ (setq width (string-to-int (match-string 1))
+ xbytes (/ (+ width 7) 8))
+ (goto-char (point-min))
+ (or (re-search-forward "_height[\t ]+\\([0-9]+\\)" nil t)
+ (error "!! Illegal xbm file format" (current-buffer)))
+ (setq height (string-to-int (match-string 1)))
+ (goto-char (point-min))
+ (re-search-forward "0x[0-9a-f][0-9a-f],")
+ (delete-region (point-min) (match-beginning 0))
+ (goto-char (point-min))
+ (while (re-search-forward "[\n\r\t ,;}]" nil t)
+ (replace-match ""))
+ (goto-char (point-min))
+ (while (re-search-forward "0x" nil t)
+ (replace-match "\\x" nil t))
+ (goto-char (point-min))
+ (insert "(" (number-to-string width) " "
+ (number-to-string height) " \"")
+ (goto-char (point-max))
+ (insert "\")")
+ (goto-char (point-min))
+ (read (current-buffer)))))
+
+(static-if (featurep 'xemacs)
+ (progn
+ (defun mime-image-type-available-p (type)
+ (memq type (image-instantiator-format-list)))
+
+ (defun mime-image-create (file-or-data &optional type data-p &rest props)
+ (when (and data-p (eq type 'xbm))
+ (with-temp-buffer
+ (insert file-or-data)
+ (setq file-or-data
+ (mime-image-normalize-xbm-buffer (current-buffer)))))
+ (let ((glyph
+ (make-glyph
+ (if (and type (mime-image-type-available-p type))
+ (vconcat
+ (list type (if data-p :data :file) file-or-data)
+ props)
+ file-or-data))))
+ (if (nothing-image-instance-p (glyph-image-instance glyph)) nil
+ glyph)))
+
+ (defun mime-image-insert (image &optional string area)
+ (let ((extent (make-extent (point)
+ (progn (and string
+ (insert string))
+ (point)))))
+ (set-extent-property extent 'invisible t)
+ (set-extent-end-glyph extent image))))
+ (condition-case nil
+ (progn
+ (require 'image)
+ (defalias 'mime-image-type-available-p 'image-type-available-p)
+ (defun mime-image-create
+ (file-or-data &optional type data-p &rest props)
+ (if (and data-p (eq type 'xbm))
+ (with-temp-buffer
+ (insert file-or-data)
+ (setq file-or-data
+ (mime-image-normalize-xbm-buffer (current-buffer)))
+ (apply #'create-image (nth 2 file-or-data) type data-p
+ (nconc
+ (list :width (car file-or-data)
+ :height (nth 1 file-or-data))
+ props)))
+ (apply #'create-image file-or-data type data-p props)))
+ (defalias 'mime-image-insert 'insert-image))
+ (error
+ (condition-case nil
+ (progn
+ (require (if (featurep 'mule) 'bitmap ""))
+ (defun mime-image-read-xbm-buffer (buffer)
+ (condition-case nil
+ (mapconcat #'bitmap-compose
+ (append (bitmap-decode-xbm
+ (bitmap-read-xbm-buffer
+ (current-buffer))) nil) "\n")
+ (error nil)))
+ (defun mime-image-insert (image &optional string area)
+ (insert image)))
+ (error
+ (defalias 'mime-image-read-xbm-buffer
+ 'mime-image-normalize-xbm-buffer)
+ (defun mime-image-insert (image &optional string area)
+ (save-restriction
+ (narrow-to-region (point)(point))
+ (let ((face (gensym "mii")))
+ (or (facep face) (make-face face))
+ (set-face-stipple face image)
+ (let ((row (make-string (/ (car image) (frame-char-width)) ? ))
+ (height (/ (nth 1 image) (frame-char-height)))
+ (i 0))
+ (while (< i height)
+ (set-text-properties (point) (progn (insert row)(point))
+ (list 'face face))
+ (insert "\n")
+ (setq i (1+ i)))))))))
+
+ (defun mime-image-type-available-p (type)
+ (eq type 'xbm))
+
+ (defun mime-image-create (file-or-data &optional type data-p &rest props)
+ (when (or (null type) (eq type 'xbm))
+ (with-temp-buffer
+ (if data-p
+ (insert file-or-data)
+ (insert-file-contents file-or-data))
+ (mime-image-read-xbm-buffer (current-buffer))))))))
+
+(defvar mime-image-format-alist
+ '((image jpeg jpeg)
+ (image gif gif)
+ (image tiff tiff)
+ (image x-tiff tiff)
+ (image xbm xbm)
+ (image x-xbm xbm)
+ (image x-xpixmap xpm)
+ (image png png)))
+
+(dolist (rule mime-image-format-alist)
+ (when (mime-image-type-available-p (nth 2 rule))
+ (ctree-set-calist-strictly
+ 'mime-preview-condition
+ (list (cons 'type (car rule))(cons 'subtype (nth 1 rule))
+ '(body . visible)
+ (cons 'body-presentation-method #'mime-display-image)
+ (cons 'image-format (nth 2 rule))))))
+
;;; @ 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-view-code-converter-alist))
- (charset (assoc "charset" params))
- (beg (point-min)) (end (point-max))
- )
- (remove-text-properties beg end '(face nil))
- (message "Decoding image...")
- (mime-decode-region beg end encoding)
- (let* ((minor (assoc-value ctype mime-view-image-converter-alist))
- (gl (image-normalize minor (buffer-string)))
- e)
- (delete-region (point-min)(point-max))
- (cond ((image-invalid-glyph-p gl)
- (setq gl nil)
- (message "Invalid glyph!")
- )
- ((eq (aref gl 0) 'xbm)
- (let ((xbm-file
- (make-temp-name (expand-file-name "tm" mime/tmp-dir))))
- (insert (aref gl 2))
- (write-region (point-min)(point-max) xbm-file)
- (message "Decoding image...")
- (delete-region (point-min)(point-max))
- (bitmap-insert-xbm-file xbm-file)
- (delete-file xbm-file)
- )
- (message "Decoding image... done")
- )
- (t
- (setq gl (make-glyph gl))
- (setq e (make-extent (point) (point)))
- (set-extent-end-glyph e gl)
- (message "Decoding image... done")
- ))
- )
- (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-view-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))
- (message "Decoding Postscript...")
- (mime-decode-region beg end encoding)
- (write-region (point-min)(point-max) ps-file)
- (message "Decoding Postscript...")
- (delete-region (point-min)(point-max))
- (call-process mime-view-ps-to-gif-command nil nil nil ps-file)
- (set-extent-end-glyph (make-extent (point) (point))
- (make-glyph (vector 'gif :file gif-file)))
- (message "Decoding Postscript... done")
- (delete-file ps-file)
- (delete-file gif-file)
- ))
-
-(set-alist 'mime-view-content-filter-alist
- "application/postscript"
- (function mime-preview/filter-for-application/postscript))
-
-(if (featurep 'gif)
- (add-to-list 'mime-view-default-showing-Content-Type-list
- "application/postscript")
- )
-
+(defun mime-display-image (entity situation)
+ (message "Decoding image...")
+ (let ((format (cdr (assq 'image-format situation)))
+ image)
+ (setq image (mime-image-create (mime-entity-content entity) format 'data))
+ (if (null image)
+ (message "Invalid glyph!")
+ (save-excursion
+ (mime-image-insert image)
+ (insert "\n")
+ (message "Decoding image...done")))))
;;; @ end
;;;
projects / elisp / semi.git / blobdiff