X-Git-Url: https://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fgnus-fun.el;h=fe39d859d8dabfd14afe653e879414a3dc7a7c1a;hb=b0a647ce416c0364b57c36a85dd5ac8ae84922d5;hp=a8ca9abed536d2830657474b2bd619b25194a139;hpb=add609265c56a9380f9447875d983a41cdb81089;p=gnus

diff --git a/lisp/gnus-fun.el b/lisp/gnus-fun.el
index a8ca9abed..fe39d859d 100644
--- a/lisp/gnus-fun.el
+++ b/lisp/gnus-fun.el
@@ -1,5 +1,6 @@
-;;; gnus-fun.el --- various frivoluos extension functions to Gnus
-;; Copyright (C) 2002 Free Software Foundation, Inc.
+;;; gnus-fun.el --- various frivolous extension functions to Gnus
+
+;; Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; Keywords: news
@@ -18,138 +19,288 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
 
 ;;; Commentary:
 
 ;;; Code:
 
+(eval-when-compile
+  (require 'cl))
+
+(require 'mm-util)
+(require 'gnus-ems)
+(require 'gnus-util)
+
 (defcustom gnus-x-face-directory (expand-file-name "x-faces" gnus-directory)
   "*Directory where X-Face PBM files are stored."
+  :version "22.1"
   :group 'gnus-fun
   :type 'directory)
 
-(defcustom gnus-convert-pbm-to-x-face-command "pbmtoxbm '%s' | compface"
+(defcustom gnus-convert-pbm-to-x-face-command "pbmtoxbm %s | compface"
   "Command for converting a PBM to an X-Face."
+  :version "22.1"
   :group 'gnus-fun
   :type 'string)
 
-(defcustom gnus-convert-image-to-x-face-command "giftopnm '%s' | ppmnorm 2>/dev/null | pnmscale -width 48 -height 48 | ppmtopgm | pgmtopbm | pbmtoxbm | compface"
-  "Command for converting a GIF to an X-Face."
+(defcustom gnus-convert-image-to-x-face-command
+  "convert -scale 48x48! %s xbm:- | xbm2xface.pl"
+  "Command for converting an image to an X-Face.
+The command must take a image filename (use \"%s\") as input.
+The output must be the Face header data on stdout in PNG format.
+
+By default it takes a GIF filename and output the X-Face header data
+on stdout."
+  :version "22.1"
   :group 'gnus-fun
-  :type 'string)
+  :type '(choice (const :tag "giftopnm, netpbm (GIF input only)"
+			"giftopnm %s | ppmnorm | pnmscale -width 48 -height 48 | ppmtopgm | pgmtopbm | pbmtoxbm | compface")
+		 (const :tag "convert"
+			"convert -scale 48x48! %s xbm:- | xbm2xface.pl")
+		 (string)))
+
+(defcustom gnus-convert-image-to-face-command
+  "convert -scale 48x48! %s -colors %d png:-"
+  "Command for converting an image to a Face.
+
+The command must take an image filename (first format
+argument\"%s\") and the number of colors (second format argument:
+\"%d\") as input.  The output must be the Face header data on
+stdout in PNG format."
+  :version "22.1"
+  :group 'gnus-fun
+  :type '(choice (const :tag "djpeg, netpbm (JPG input only)"
+			"djpeg %s | ppmnorm | pnmscale -width 48 -height 48 | ppmquant %d | pnmtopng")
+		 (const :tag "convert"
+			"convert -scale 48x48! %s -colors %d png:-")
+		 (string)))
+
+(defcustom gnus-face-properties-alist (if (featurep 'xemacs)
+					  '((xface . (:face gnus-x-face)))
+					'((pbm . (:face gnus-x-face))
+					  (png . nil)))
+  "Alist of image types and properties applied to Face and X-Face images.
+Here are examples:
+
+;; Specify the altitude of Face images in the From header.
+\(setq gnus-face-properties-alist
+      '((pbm . (:face gnus-x-face :ascent 80))
+	(png . (:ascent 80))))
+
+;; Show Face images as pressed buttons.
+\(setq gnus-face-properties-alist
+      '((pbm . (:face gnus-x-face :relief -2))
+	(png . (:relief -2))))
+
+See the manual for the valid properties for various image types.
+Currently, `pbm' is used for X-Face images and `png' is used for Face
+images in Emacs.  Only the `:face' property is effective on the `xface'
+image type in XEmacs if it is built with the libcompface library."
+  :group 'gnus-fun
+  :type '(repeat (cons :format "%v" (symbol :tag "Image type") plist)))
+
+(defun gnus-shell-command-to-string (command)
+  "Like `shell-command-to-string' except not mingling ERROR."
+  (with-output-to-string
+    (call-process shell-file-name nil (list standard-output nil)
+		  nil shell-command-switch command)))
+
+(defun gnus-shell-command-on-region (start end command)
+  "A simplified `shell-command-on-region'.
+Output to the current buffer, replace text, and don't mingle error."
+  (call-process-region start end shell-file-name t
+		       (list (current-buffer) nil)
+		       nil shell-command-switch command))
 
 ;;;###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$"))
 	   (file (nth (random (length files)) files)))
       (when file
-	(shell-command-to-string
-	 (format gnus-convert-pbm-to-x-face-command file))))))
+	(gnus-shell-command-to-string
+	 (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:" )
+  "Insert an X-Face header based on an image file.
+
+Depending on `gnus-convert-image-to-x-face-command' it may accept
+different input formats."
+  (interactive "fImage file name: ")
   (when (file-exists-p file)
-    (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)))
+    (gnus-shell-command-to-string
+     (format gnus-convert-image-to-x-face-command
+	     (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))))
-	 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))
-    (with-temp-buffer
-      (insert "P2\n48 48\n255\n")
-      (dolist (pixel pixels)
-	(insert (number-to-string (* scale pixel)) " "))
-      (shell-command-on-region
-       (point-min) (point-max)
-       "ppmtoxpm"
-       (current-buffer) t (get-buffer-create " *junk"))
-      (buffer-string))))
+(defun gnus-face-from-file (file)
+  "Return a Face header based on an image file.
+
+Depending on `gnus-convert-image-to-face-command' it may accept
+different input formats."
+  (interactive "fImage file name: ")
+  (when (file-exists-p file)
+    (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 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-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))
+(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)
+
+(defun gnus-display-x-face-in-from (data)
+  "Display the X-Face DATA in the From header."
+  (let ((default-enable-multibyte-characters nil)
+	pbm)
+    (when (or (gnus-image-type-available-p 'xface)
+	      (and (gnus-image-type-available-p 'pbm)
+		   (setq pbm (uncompface data))))
+      (save-excursion
 	(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)))
+	  (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))
+    (with-temp-buffer
+      (shell-command
+       (format "pnmcut -left 110 -top 30 -width 144 -height 144 '%s' | ppmnorm 2>/dev/null | pnmscale -width 48 | ppmtopgm | pgmtopbm -threshold -value 0.92 | pbmtoxbm | compface"
+	       file)
+       (current-buffer))
+      ;;(sleep-for 3)
+      (delete-file file)
+      (buffer-string))))
+
+(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)
+	result)
+    (while (null (setq file (directory-files "/tftpboot/sparky/tmp"
+					     t "snap.*ppm")))
+      (sleep-for 1))
+    (setq file (car file))
+    (shell-command
+     (format "pnmcut -left 110 -top 30 -width 144 -height 144 '%s' | pnmscale -width 48 -height 48 | ppmtopgm > /tmp/gnus.face.ppm"
+	     file))
+    (let ((gnus-convert-image-to-face-command
+	   (format "cat '%%s' | ppmquant %%d | ppmchange %s | pnmtopng"
+		   (gnus-fun-ppm-change-string))))
+      (setq result (gnus-face-from-file "/tmp/gnus.face.ppm")))
+    (delete-file file)
+    ;;(delete-file "/tmp/gnus.face.ppm")
+    result))
+
+(defun gnus-fun-ppm-change-string ()
+  (let* ((possibilites '("%02x0000" "00%02x00" "0000%02x"
+			"%02x%02x00" "00%02x%02x" "%02x00%02x"))
+	 (format (concat "'#%02x%02x%02x' '#"
+			 (nth (random 6) possibilites)
+			 "'"))
+	 (values nil))
+  (dotimes (i 255)
+    (push (format format i i i i i i)
+	  values))
+  (mapconcat 'identity values " ")))
 
 (provide 'gnus-fun)
 
+;;; arch-tag: 9d000a69-15cc-4491-9dc0-4627484f50c1
 ;;; gnus-fun.el ends here