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b246235b | 1 | ;;; smiley-ems.el --- displaying smiley faces |
d32525fd | 2 | |
b246235b DL |
3 | ;; Copyright (C) 2000 Free Software Foundation, Inc. |
4 | ||
5 | ;; Author: Dave Love <fx@gnu.org> | |
6 | ;; Keywords: news mail multimedia | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
24 | ||
25 | ;;; Commentary: | |
26 | ||
27 | ;; A re-written, simplified version of Wes Hardaker's XEmacs smiley.el | |
28 | ;; which might be merged back to smiley.el if we get an assignment for | |
29 | ;; that. We don't have assignments for the images smiley.el uses, but | |
d32525fd DL |
30 | ;; I'm not sure we need that degree of rococoness and defaults like a |
31 | ;; yellow background. Also, using PBM means we can display the images | |
32 | ;; more generally. -- fx | |
b246235b DL |
33 | |
34 | ;;; Test smileys: :-) :-\ :-( :-/ | |
35 | ||
36 | ;;; Code: | |
37 | ||
38 | (require 'nnheader) | |
39 | ||
40 | (defgroup smiley nil | |
41 | "Turn :-)'s into real images." | |
42 | :group 'gnus-visual) | |
43 | ||
44 | ;; Maybe this should go. | |
45 | (defcustom smiley-data-directory (nnheader-find-etc-directory "smilies") | |
aae25c8c | 46 | "*If non-nil, a directory to search for the smiley image files. |
1424c9bf | 47 | This is in addition to the normal image search path." |
aae25c8c DL |
48 | :type '(choice directory |
49 | (const nil)) | |
b246235b DL |
50 | :group 'smiley) |
51 | ||
52 | ;; The XEmacs version has a baroque, if not rococo, set of these. | |
53 | (defcustom smiley-regexp-alist | |
5768681d | 54 | ;; Perhaps :-) should be distinct -- it does appear in the Jargon File. |
d6a1d289 GM |
55 | '(("\\([:;]-?)\\)\\(\\W\\|\\'\\)" 1 "smile.pbm") |
56 | ("\\(:-[/\\]\\)\\(\\W\\|\\'\\)" 1 "wry.pbm") | |
57 | ("\\(:-[({]\\)\\(\\W\\|\\'\\)" 1 "frown.pbm")) | |
b246235b DL |
58 | "*A list of regexps to map smilies to images. |
59 | The elements are (REGEXP MATCH FILE), where MATCH is the submatch in | |
d32525fd | 60 | rgexp to replace with IMAGE. IMAGE is the name of a PBM file in |
1424c9bf | 61 | `smiley-data-directory' or the normal image search path." |
b246235b DL |
62 | :type '(repeat (list regexp |
63 | (integer :tag "Regexp match number") | |
64 | (string :tag "Image name"))) | |
65 | :set (lambda (symbol value) | |
66 | (set-default symbol value) | |
67 | (smiley-update-cache)) | |
68 | :initialize 'custom-initialize-default | |
69 | :group 'smiley) | |
70 | ||
71 | (defvar smiley-cached-regexp-alist nil) | |
72 | ||
73 | (defun smiley-update-cache () | |
74 | (dolist (elt smiley-regexp-alist) | |
75 | (let* ((data-directory smiley-data-directory) | |
d32525fd | 76 | (image (find-image (list (list :type 'pbm |
b246235b | 77 | :file (nth 2 elt) |
323ce452 | 78 | :ascent 'center))))) |
b246235b DL |
79 | (if image |
80 | (push (list (car elt) (cadr elt) image) | |
81 | smiley-cached-regexp-alist))))) | |
82 | ||
83 | (defvar smiley-active nil | |
84 | "Non-nil means smilies in the buffer will be displayed.") | |
85 | (make-variable-buffer-local 'smiley-active) | |
86 | ||
87 | (defvar smiley-mouse-map | |
88 | (let ((map (make-sparse-keymap))) | |
89 | (define-key map [down-mouse-2] 'ignore) ; override widget | |
90 | (define-key map [mouse-2] | |
91 | 'smiley-mouse-toggle-buffer) | |
92 | map)) | |
93 | ||
94 | ;;;###autoload | |
95 | (defun smiley-region (start end) | |
8e2ec7cd GM |
96 | "Display textual smileys as images. |
97 | START and END specify the region; interactively, use the values | |
98 | of point and mark. The value of `smiley-regexp-alist' determines | |
99 | which smileys to operate on and which images to use for them." | |
b246235b | 100 | (interactive "r") |
5768681d DL |
101 | (when (and (fboundp 'display-graphic-p) |
102 | (display-graphic-p)) | |
b246235b DL |
103 | (mapc (lambda (o) |
104 | (if (eq 'smiley (overlay-get o 'smiley)) | |
105 | (delete-overlay o))) | |
106 | (overlays-in start end)) | |
107 | (unless smiley-cached-regexp-alist | |
108 | (smiley-update-cache)) | |
109 | (save-excursion | |
110 | (let ((beg (or start (point-min))) | |
7476c3a0 | 111 | (inhibit-point-motion-hooks t) |
5768681d | 112 | group overlay image) |
b246235b | 113 | (dolist (entry smiley-cached-regexp-alist) |
5768681d DL |
114 | (setq group (nth 1 entry) |
115 | image (nth 2 entry)) | |
b246235b DL |
116 | (goto-char beg) |
117 | (while (re-search-forward (car entry) end t) | |
118 | (when image | |
119 | (setq overlay (make-overlay (match-beginning group) | |
120 | (match-end group))) | |
121 | (overlay-put overlay | |
5768681d | 122 | 'display `(when smiley-active ,@image)) |
b246235b DL |
123 | (overlay-put overlay 'mouse-face 'highlight) |
124 | (overlay-put overlay 'smiley t) | |
125 | (overlay-put overlay | |
126 | 'help-echo "mouse-2: toggle smilies in buffer") | |
d6a1d289 GM |
127 | (overlay-put overlay 'keymap smiley-mouse-map) |
128 | (goto-char (match-end group))))))) | |
b246235b DL |
129 | (setq smiley-active t))) |
130 | ||
131 | (defun smiley-toggle-buffer (&optional arg) | |
132 | "Toggle displaying smiley faces. | |
133 | With arg, turn displaying on if and only if arg is positive." | |
134 | (interactive "P") | |
135 | (if (numberp arg) | |
136 | (setq smiley-active (> arg 0)) | |
137 | (setq smiley-active (not smiley-active)))) | |
138 | ||
139 | (defun smiley-mouse-toggle-buffer (event) | |
140 | "Toggle displaying smiley faces. | |
141 | With arg, turn displaying on if and only if arg is positive." | |
142 | (interactive "e") | |
143 | (save-excursion | |
144 | (save-window-excursion | |
145 | (mouse-set-point event) | |
146 | (smiley-toggle-buffer)))) | |
147 | ||
148 | (eval-when-compile (defvar gnus-article-buffer)) | |
149 | ||
150 | (defun gnus-smiley-display (&optional arg) | |
8f688cb0 | 151 | "Display textual emoticons (\"smilies\") as small graphical icons. |
b246235b DL |
152 | With arg, turn displaying on if and only if arg is positive." |
153 | (interactive "P") | |
154 | (save-excursion | |
155 | (set-buffer gnus-article-buffer) | |
156 | (save-restriction | |
157 | (widen) | |
158 | (article-goto-body) | |
159 | (smiley-region (point-min) (point-max)) | |
160 | (if (and (numberp arg) (<= arg 0)) | |
161 | (smiley-toggle-buffer arg))))) | |
162 | ||
163 | (provide 'smiley) | |
164 | ||
ab5796a9 | 165 | ;;; arch-tag: e726728a-14fb-4e6a-9aef-889941bdf7ad |
b246235b | 166 | ;;; smiley-ems.el ends here |