;;; gnus-fun.el --- various frivoluos extension functions to Gnus
-;; Copyright (C) 2002 Free Software Foundation, Inc.
+;; Copyright (C) 2002, 2003 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
:type 'string)
(defcustom gnus-convert-image-to-x-face-command "giftopnm %s | ppmnorm | pnmscale -width 48 -height 48 | ppmtopgm | pgmtopbm | pbmtoxbm | compface"
- "Command for converting a GIF to an X-Face."
+ "Command for converting an image to an X-Face.
+By default it takes a GIF filename and output the X-Face header data
+on stdout."
+ :group 'gnus-fun
+ :type 'string)
+
+(defcustom gnus-convert-image-to-face-command "djpeg %s | ppmnorm | pnmscale -width 48 -height 48 | ppmquant %d | pnmtopng"
+ "Command for converting an image to an Face.
+By default it takes a JPEG filename and output the Face header data
+on stdout."
:group 'gnus-fun
:type 'string)
;;;###autoload
(defun gnus-random-x-face ()
- "Insert a random X-Face header from `gnus-x-face-directory'."
+ "Return X-Face header data chosen randomly from `gnus-x-face-directory'."
(interactive)
(when (file-exists-p gnus-x-face-directory)
(let* ((files (directory-files gnus-x-face-directory t "\\.pbm$"))
(format gnus-convert-pbm-to-x-face-command
(shell-quote-argument file)))))))
+;;;###autoload
+(defun gnus-insert-random-x-face-header ()
+ "Insert a random X-Face header from `gnus-x-face-directory'."
+ (interactive)
+ (let ((data (gnus-random-x-face)))
+ (save-excursion
+ (message-goto-eoh)
+ (if data
+ (insert "X-Face: " data)
+ (message
+ "No face returned by `gnus-random-x-face'. Does %s/*.pbm exist?"
+ gnus-x-face-directory)))))
+
;;;###autoload
(defun gnus-x-face-from-file (file)
"Insert an X-Face header based on an image file."
- (interactive "fImage file name:" )
+ (interactive "fImage file name (by default GIF): ")
(when (file-exists-p file)
(gnus-shell-command-to-string
(format gnus-convert-image-to-x-face-command
- (shell-quote-argument file)))))
-
-(defun gnus-convert-image-to-gray-x-face (file depth)
- (let* ((mapfile (mm-make-temp-file (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 (gnus-shell-command-to-string
- (format "giftopnm %s | ppmnorm | pnmscale -width 48 -height 48 | ppmquant -fs -map %s | ppmtopgm | pnmnoraw"
- (shell-quote-argument 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 ")))
- (gnus-shell-command-on-region
- (point-min) (point-max)
- ;; the following is taken from xbmtoikon:
- "pbmtoicon | sed '/^[ ]*[*\\\\/]/d; s/[ ]//g; s/,$//' | tr , '\\012' | sed 's/^0x//; s/^/0x/' | pr -l1 -t -w22 -3 -s, | sed 's/,*$/,/' | compface")
- (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)))
+ (shell-quote-argument (expand-file-name file))))))
;;;###autoload
-(defun gnus-convert-gray-x-face-to-xpm (faces)
- (let* ((depth (length faces))
- (scale (/ 255 (1- (expt 2 depth))))
- (ok-p t)
- (coding-system-for-read 'binary)
- (coding-system-for-write 'binary)
- default-enable-multibyte-characters
- start bit-array bit-arrays pixel)
- (with-temp-buffer
- (dolist (face faces)
- (erase-buffer)
- (insert (uncompface face))
- (gnus-shell-command-on-region
- (point-min) (point-max)
- "pnmnoraw")
- (goto-char (point-min))
- (forward-line 2)
- (setq start (point))
- (insert "[")
- (while (not (eobp))
- (forward-char 1)
- (insert " "))
- (insert "]")
- (goto-char start)
- (setq bit-array (read (current-buffer)))
- (unless (= (length bit-array) (* 48 48))
- (setq ok-p nil))
- (push bit-array bit-arrays))
- (when ok-p
- (erase-buffer)
- (insert "P2\n48 48\n255\n")
- (dotimes (i (* 48 48))
- (setq pixel 0)
- (dotimes (plane depth)
- (setq pixel (+ (* pixel 2) (aref (nth plane bit-arrays) i))))
- (insert (number-to-string (* scale pixel)) " "))
- (gnus-shell-command-on-region
- (point-min) (point-max)
- "ppmtoxpm")
- (buffer-string)))))
+(defun gnus-face-from-file (file)
+ "Return an Face header based on an image file."
+ (interactive "fImage file name (by default JPEG): ")
+ (when (file-exists-p file)
+ (let ((done nil)
+ (attempt "")
+ (quant 16))
+ (while (and (not done)
+ (> quant 1))
+ (setq attempt
+ (gnus-shell-command-to-string
+ (format gnus-convert-image-to-face-command
+ (shell-quote-argument (expand-file-name file))
+ quant)))
+ (if (> (length attempt) 740)
+ (progn
+ (setq quant (- quant 2))
+ (message "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-gray-x-face-region (beg end)
- "Convert the X-Faces in region to a PPM file."
- (interactive "r")
- (let ((input (buffer-substring beg end))
- faces)
- (with-temp-buffer
- (insert input)
- (goto-char (point-min))
- (while (not (eobp))
- (save-restriction
- (mail-header-narrow-to-field)
- (push (mail-header-field-value) faces)
- (goto-char (point-max)))))
- (gnus-convert-gray-x-face-to-xpm faces)))
+(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
+740 bytes."
+ (mm-with-unibyte-buffer
+ (insert-file-contents file)
+ (when (> (buffer-size) 740)
+ (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.
(delete-file file)
(buffer-string))))
-(defun gnus-grab-gray-x-face ()
+(defun gnus-grab-cam-face ()
"Grab a picture off the camera and make it into an X-Face."
(interactive)
(shell-command "xawtv-remote snap ppm")
- (let ((file nil))
+ (let ((file nil)
+ result)
(while (null (setq file (directory-files "/tftpboot/sparky/tmp"
t "snap.*ppm")))
(sleep-for 1))
(setq file (car file))
- (with-temp-buffer
- (shell-command
- (format "pnmcut -left 70 -top 100 -width 144 -height 144 '%s' | ppmquant 256 2>/dev/null | ppmtogif > '%s.gif'"
- file file)
- (current-buffer))
- (delete-file file))
- (gnus-convert-image-to-gray-x-face (concat file ".gif") 3)
- (delete-file (concat file ".gif"))))
-
-(defun gnus-respond-to-confirmation ()
- "Respond to a Gmane confirmation message."
- (interactive)
- (gnus-summary-show-article 'raw)
- (set-buffer gnus-article-buffer)
- (let ((buffer-read-only nil))
- (goto-char (point-min))
- (gnus-article-goto-header "Original-To")
- (replace-match "To:"))
- (let ((auth nil))
- (when (and (search-forward "Majordomo" nil t)
- (re-search-forward "auth.*subscribe.*$" nil t))
- (setq auth (match-string 0)))
- (message-wide-reply)
- (goto-char (point-min))
- (gnus-article-goto-header "Cc")
- (replace-match "From:")
- (message-goto-body)
- (delete-region (point) (point-max))
- (when auth
- (insert auth "\n"))))
+ (shell-command
+ (format "pnmcut -left 110 -top 30 -width 144 -height 144 '%s' | ppmnorm 2>/dev/null | ppmnorm | ppmtopgm | pnmscale -width 48 -height 48 > /tmp/gnus.face.ppm"
+ file))
+ (let ((gnus-convert-image-to-face-command
+ "cat '%s' | ppmquant %d | pnmtopng"))
+ (setq result (gnus-face-from-file "/tmp/gnus.face.ppm")))
+ (delete-file file)
+ ;;(delete-file "/tmp/gnus.face.ppm")
+ result))
(provide 'gnus-fun)
projects / gnus / blobdiff