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comparison lisp/gnus/smiley.el @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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1 ;;; smiley.el --- displaying smiley faces
2 ;; Copyright (C) 1996 Free Software Foundation, Inc.
3
4 ;; Author: Wes Hardaker <hardaker@ece.ucdavis.edu>
5 ;; Keywords: fun
6
7 ;; This file is part of GNU Emacs.
8
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; any later version.
13
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
18
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
23
24 ;;; Commentary:
25
26 ;;
27 ;; comments go here.
28 ;;
29
30 ;;; Test smileys: :-] :-o :-) ;-) :-\ :-| :-d :-P 8-| :-(
31
32 ;; To use:
33 ;; (require 'smiley)
34 ;; (add-hook 'gnus-article-display-hook 'gnus-smiley-display t)
35
36 (require 'annotations)
37 (eval-when-compile (require 'cl))
38
39 (defvar smiley-data-directory (message-xmas-find-glyph-directory "smilies")
40 "Location of the smiley faces files.")
41
42 (defvar smiley-regexp-alist
43 '(("\\s-\\(:-*\\]\\)" 1 "FaceGrinning.xpm")
44 ("\\s-\\(:-*[oO]\\)" 1 "FaceStartled.xpm")
45 ("\\s-\\(:-*[)>]\\)" 1 "FaceHappy.xpm")
46 ("\\s-\\(;-*[>)]\\)" 1 "FaceWinking.xpm")
47 ("\\s-\\(:-[/\\]\\)" 1 "FaceIronic.xpm")
48 ("\\s-\\(:-*|\\)" 1 "FaceStraight.xpm")
49 ("\\s-\\(:-*<\\)" 1 "FaceAngry.xpm")
50 ("\\s-\\(:-*d\\)" 1 "FaceTasty.xpm")
51 ("\\s-\\(:-*[pP]\\)" 1 "FaceYukky.xpm")
52 ("\\s-\\(8-*|\\)" 1 "FaceKOed.xpm")
53 ("\\s-\\(:-*(\\)" 1 "FaceAngry.xpm"))
54 "A list of regexps to map smilies to real images.")
55
56 (defvar smiley-flesh-color "yellow"
57 "Flesh color.")
58
59 (defvar smiley-features-color "black"
60 "Features color.")
61
62 (defvar smiley-tongue-color "red"
63 "Tongue color.")
64
65 (defvar smiley-circle-color "black"
66 "Tongue color.")
67
68 (defvar smiley-glyph-cache nil)
69 (defvar smiley-running-xemacs (string-match "XEmacs" emacs-version))
70
71 (defun smiley-create-glyph (smiley pixmap)
72 (and
73 smiley-running-xemacs
74 (or
75 (cdr-safe (assoc pixmap smiley-glyph-cache))
76 (let* ((xpm-color-symbols
77 (and (featurep 'xpm)
78 (append `(("flesh" ,smiley-flesh-color)
79 ("features" ,smiley-features-color)
80 ("tongue" ,smiley-tongue-color))
81 xpm-color-symbols)))
82 (glyph (make-glyph
83 (list
84 (cons 'x (expand-file-name pixmap smiley-data-directory))
85 (cons 'tty smiley)))))
86 (setq smiley-glyph-cache (cons (cons pixmap glyph) smiley-glyph-cache))
87 (set-glyph-face glyph 'default)
88 glyph))))
89
90 ;;;###interactive
91 (defun smiley-region (beg end)
92 "Smilify the region between point and mark."
93 (interactive "r")
94 (smiley-buffer (current-buffer) beg end))
95
96 ;;;###interactive
97 (defun smiley-buffer (&optional buffer st nd)
98 (interactive)
99 (save-excursion
100 (and buffer (set-buffer buffer))
101 (let ((buffer-read-only nil)
102 (alist smiley-regexp-alist)
103 entry regexp beg group file)
104 (goto-char (or st (point-min)))
105 (setq beg (point))
106 ;; loop through alist
107 (while (setq entry (pop alist))
108 (setq regexp (car entry)
109 group (cadr entry)
110 file (caddr entry))
111 (goto-char beg)
112 (while (re-search-forward regexp nd t)
113 (let* ((start (match-beginning group))
114 (end (match-end group))
115 (glyph (smiley-create-glyph (buffer-substring start end)
116 file)))
117 (when glyph
118 (mapcar 'delete-annotation (annotations-at end))
119 (let ((ext (make-extent start end)))
120 (set-extent-property ext 'invisible t)
121 (set-extent-property ext 'end-open t)
122 (set-extent-property ext 'intangible t))
123 (make-annotation glyph end 'text)
124 (when (smiley-end-paren-p start end)
125 (make-annotation ")" end 'text))
126 (goto-char end))))))))
127
128 (defun smiley-end-paren-p (start end)
129 "Try to guess whether the current smiley is an end-paren smiley."
130 (save-excursion
131 (goto-char start)
132 (when (and (re-search-backward "[()]" nil t)
133 (= (following-char) ?\()
134 (goto-char end)
135 (or (not (re-search-forward "[()]" nil t))
136 (= (char-after (1- (point))) ?\()))
137 t)))
138
139 ;;;###autoload
140 (defun gnus-smiley-display ()
141 (interactive)
142 (save-excursion
143 (set-buffer gnus-article-buffer)
144 (goto-char (point-min))
145 ;; We skip the headers.
146 (unless (search-forward "\n\n" nil t)
147 (goto-char (point-max)))
148 (smiley-buffer (current-buffer) (point))))
149
150 (provide 'smiley)
151
152 ;;; smiley.el ends here