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