--- /dev/null
+;;; smiley-ems.el --- displaying smiley faces
+;; Copyright (C) 2000 Free Software Foundation, Inc.
+
+;; Author: Dave Love <fx@gnu.org>
+;; Keywords: news mail multimedia
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 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.
+
+;;; Commentary:
+
+;; A re-written, simplified version of Wes Hardaker's XEmacs smiley.el
+;; which might be merged back to smiley.el if we get an assignment for
+;; that. We don't have assignments for the images smiley.el uses, but
+;; I'm not sure we need that degree of rococoness and they shouldn't
+;; have a yellow background by default. Also, using XBM means we can
+;; display the images more generally. -- fx
+
+;;; Test smileys: :-) :-\ :-( :-/
+
+;;; Code:
+
+(require 'nnheader)
+
+(defgroup smiley nil
+ "Turn :-)'s into real images."
+ :group 'gnus-visual)
+
+;; Maybe this should go.
+(defcustom smiley-data-directory (nnheader-find-etc-directory "smilies")
+ "*Location of the smiley faces files."
+ :type 'directory
+ :group 'smiley)
+
+;; The XEmacs version has a baroque, if not rococo, set of these.
+(defcustom smiley-regexp-alist
+ '(("\\([:;]-?)\\)\\W" 1 "smile.xbm")
+ ("\\(:-[/\\]\\)\\W" 1 "wry.xbm")
+ ("\\(:-[({]\\)\\W" 1 "frown.xbm"))
+ "*A list of regexps to map smilies to images.
+The elements are (REGEXP MATCH FILE), where MATCH is the submatch in
+rgexp to replace with IMAGE. IMAGE is the name of an XBM file in
+`smiley-data-directory'."
+ :type '(repeat (list regexp
+ (integer :tag "Regexp match number")
+ (string :tag "Image name")))
+ :set (lambda (symbol value)
+ (set-default symbol value)
+ (smiley-update-cache))
+ :initialize 'custom-initialize-default
+ :group 'smiley)
+
+(defvar smiley-cached-regexp-alist nil)
+
+(defun smiley-update-cache ()
+ (dolist (elt smiley-regexp-alist)
+ (let* ((data-directory smiley-data-directory)
+ (image (find-image (list (list :type 'xbm
+ :file (nth 2 elt)
+ :ascent 100)))))
+ (if image
+ (push (list (car elt) (cadr elt) image)
+ smiley-cached-regexp-alist)))))
+
+(defvar smiley-active nil
+ "Non-nil means smilies in the buffer will be displayed.")
+(make-variable-buffer-local 'smiley-active)
+
+(defvar smiley-mouse-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map [down-mouse-2] 'ignore) ; override widget
+ (define-key map [mouse-2]
+ 'smiley-mouse-toggle-buffer)
+ map))
+
+;;;###autoload
+(defun smiley-region (start end)
+ "Replace in the region `smiley-regexp-alist' matches with corresponding images."
+ (interactive "r")
+ (when (display-graphic-p)
+ (mapc (lambda (o)
+ (if (eq 'smiley (overlay-get o 'smiley))
+ (delete-overlay o)))
+ (overlays-in start end))
+ (unless smiley-cached-regexp-alist
+ (smiley-update-cache))
+ (save-excursion
+ (let ((beg (or start (point-min)))
+ buffer-read-only entry beg group overlay image)
+ (dolist (entry smiley-cached-regexp-alist)
+ (setq group (nth 1 entry))
+ (goto-char beg)
+ (while (re-search-forward (car entry) end t)
+ (when image
+ (setq overlay (make-overlay (match-beginning group)
+ (match-end group)))
+ (overlay-put overlay
+ 'display `(when smiley-active ,@(nth 2 entry)))
+ (overlay-put overlay 'mouse-face 'highlight)
+ (overlay-put overlay 'smiley t)
+ (overlay-put overlay
+ 'help-echo "mouse-2: toggle smilies in buffer")
+ (overlay-put overlay 'keymap smiley-mouse-map))))))
+ (setq smiley-active t)))
+
+(defun smiley-toggle-buffer (&optional arg)
+ "Toggle displaying smiley faces.
+With arg, turn displaying on if and only if arg is positive."
+ (interactive "P")
+ (if (numberp arg)
+ (setq smiley-active (> arg 0))
+ (setq smiley-active (not smiley-active))))
+
+(defun smiley-mouse-toggle-buffer (event)
+ "Toggle displaying smiley faces.
+With arg, turn displaying on if and only if arg is positive."
+ (interactive "e")
+ (save-excursion
+ (save-window-excursion
+ (mouse-set-point event)
+ (smiley-toggle-buffer))))
+
+(eval-when-compile (defvar gnus-article-buffer))
+
+(defun gnus-smiley-display (&optional arg)
+ "Display textual emoticaons (\"smilies\") as small graphical icons.
+With arg, turn displaying on if and only if arg is positive."
+ (interactive "P")
+ (save-excursion
+ (set-buffer gnus-article-buffer)
+ (save-restriction
+ (widen)
+ (article-goto-body)
+ (smiley-region (point-min) (point-max))
+ (if (and (numberp arg) (<= arg 0))
+ (smiley-toggle-buffer arg)))))
+
+(provide 'smiley)
+
+;;; smiley-ems.el ends here