- (shell-command-to-string
- (format gnus-convert-image-to-x-face-command file))))
-
-(defun gnus-convert-image-to-gray-x-face (file depth)
- (let* ((mapfile (make-temp-name (expand-file-name "gnus." mm-tmp-directory)))
- (levels (expt 2 depth))
- (step (/ 255 (1- levels)))
- color-alist bits bits-list mask pixel x-faces)
- (with-temp-file mapfile
- (insert "P3\n")
- (insert (format "%d 1\n" levels))
- (insert "255\n")
- (dotimes (i levels)
- (insert (format "%d %d %d\n"
- (* step i) (* step i) (* step i)))
- (push (cons (* step i) i) color-alist)))
- (when (file-exists-p file)
- (with-temp-buffer
- (insert (shell-command-to-string (format "giftopnm '%s' | ppmnorm 2>/dev/null | pnmscale -width 48 -height 48 | ppmquant -map %s 2>/dev/null | ppmtopgm | pnmtoplainpnm"
- file mapfile)))
- (goto-char (point-min))
- (forward-line 3)
- (while (setq pixel (ignore-errors (read (current-buffer))))
- (push (cdr (assq pixel color-alist)) bits-list))
- (setq bits-list (nreverse bits-list))
- (dotimes (bit-number depth)
- (setq mask (expt 2 bit-number))
- (with-temp-buffer
- (insert "P1\n48 48\n")
- (dolist (bits bits-list)
- (insert (if (zerop (logand bits mask)) "0 " "1 ")))
- (shell-command-on-region
- (point-min) (point-max)
- "pbmtoxbm | compface"
- (current-buffer) t)
- (push (buffer-string) x-faces))))
- (dotimes (i (length x-faces))
- (insert (if (zerop i) "X-Face:" (format "X-Face-%s:" i))
- (nth i x-faces))))
- (delete-file mapfile)))
-
-(defun gnus-convert-gray-x-face-to-ppm (faces)
- (let* ((depth (length faces))
- (scale (/ 255 (1- (expt 2 depth))))
- bit-list bit-lists pixels pixel)
- (dolist (face faces)
- (with-temp-buffer
- (insert face)
- (shell-command-on-region
- (point-min) (point-max)
- "uncompface -X | xbmtopbm | pnmtoplainpnm"
- (current-buffer) t)
- (goto-char (point-min))
- (forward-line 2)
- (while (not (eobp))
- (cond
- ((eq (following-char) ?0)
- (push 0 bit-list))
- ((eq (following-char) ?1)
- (push 1 bit-list)))
- (forward-char 1)))
- (push bit-list bit-lists))
- (dotimes (i (* 48 48))
- (setq pixel 0)
- (dotimes (plane depth)
- (setq pixel (+ (* pixel 2) (nth i (nth plane bit-lists)))))
- (push pixel pixels))
+ (let ((done nil)
+ (attempt "")
+ (quant 16))
+ (while (and (not done)
+ (> quant 1))
+ (setq attempt
+ (let ((coding-system-for-read 'binary))
+ (gnus-shell-command-to-string
+ (format gnus-convert-image-to-face-command
+ (shell-quote-argument (expand-file-name file))
+ quant))))
+ (if (> (length attempt) 726)
+ (progn
+ (setq quant (- quant (if (< quant 10) 1 2)))
+ (gnus-message 9 "Length %d; trying quant %d"
+ (length attempt) quant))
+ (setq done t)))
+ (if done
+ (mm-with-unibyte-buffer
+ (insert attempt)
+ (gnus-face-encode))
+ nil))))
+
+(defun gnus-face-encode ()
+ (let ((step 72))
+ (base64-encode-region (point-min) (point-max))
+ (goto-char (point-min))
+ (while (search-forward "\n" nil t)
+ (replace-match ""))
+ (goto-char (point-min))
+ (while (> (- (point-max) (point))
+ step)
+ (forward-char step)
+ (insert "\n ")
+ (setq step 76))
+ (buffer-string)))
+
+;;;###autoload
+(defun gnus-convert-face-to-png (face)
+ "Convert FACE (which is base64-encoded) to a PNG.
+The PNG is returned as a string."
+ (mm-with-unibyte-buffer
+ (insert face)
+ (ignore-errors
+ (base64-decode-region (point-min) (point-max)))
+ (buffer-string)))
+
+;;;###autoload
+(defun gnus-convert-png-to-face (file)
+ "Convert FILE to a Face.
+FILE should be a PNG file that's 48x48 and smaller than or equal to
+726 bytes."
+ (mm-with-unibyte-buffer
+ (insert-file-contents file)
+ (when (> (buffer-size) 726)
+ (error "The file is %d bytes long, which is too long"
+ (buffer-size)))
+ (gnus-face-encode)))
+
+(defface gnus-x-face '((t (:foreground "black" :background "white")))
+ "Face to show X-Face.
+The colors from this face are used as the foreground and background
+colors of the displayed X-Faces."
+ :group 'gnus-article-headers)
+
+(declare-function article-narrow-to-head "gnus-art" ())
+(declare-function gnus-article-goto-header "gnus-art" (header))
+(declare-function gnus-add-image "gnus-art" (category image))
+(declare-function gnus-add-wash-type "gnus-art" (type))
+
+(defun gnus-display-x-face-in-from (data)
+ "Display the X-Face DATA in the From header."
+ (require 'gnus-art)
+ (let (pbm)
+ (when (or (gnus-image-type-available-p 'xface)
+ (and (gnus-image-type-available-p 'pbm)
+ (setq pbm (uncompface data))))
+ (save-excursion
+ (save-restriction
+ (article-narrow-to-head)
+ (gnus-article-goto-header "from")
+ (when (bobp)
+ (insert "From: [no `from' set]\n")
+ (forward-char -17))
+ (gnus-add-image
+ 'xface
+ (gnus-put-image
+ (if (gnus-image-type-available-p 'xface)
+ (apply 'gnus-create-image (concat "X-Face: " data) 'xface t
+ (cdr (assq 'xface gnus-face-properties-alist)))
+ (apply 'gnus-create-image pbm 'pbm t
+ (cdr (assq 'pbm gnus-face-properties-alist))))
+ nil 'xface))
+ (gnus-add-wash-type 'xface))))))
+
+(defun gnus-grab-cam-x-face ()
+ "Grab a picture off the camera and make it into an X-Face."
+ (interactive)
+ (shell-command "xawtv-remote snap ppm")
+ (let ((file nil))
+ (while (null (setq file (directory-files "/tftpboot/sparky/tmp"
+ t "snap.*ppm")))
+ (sleep-for 1))
+ (setq file (car file))