code.delx.au - gnu-emacs/blob - lisp/gnus/earcon.el

   1 ;;; earcon.el --- Sound effects for messages
   2 ;; Copyright (C) 1996 Free Software Foundation
   3
   4 ;; Author: Steven L. Baur <steve@miranova.com>
   5 ;; Keywords: news fun sound
   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 ;; This file provides access to sound effects in Gnus.
  26
  27 ;;; Code:
  28
  29 (if (null (boundp 'running-xemacs))
  30     (defvar running-xemacs (string-match "XEmacs\\|Lucid" emacs-version)))
  31
  32 (require 'gnus)
  33 (require 'gnus-audio)
  34 (require 'gnus-art)
  35 (eval-when-compile (require 'cl))
  36
  37 (defgroup earcon nil
  38   "Turn ** sounds ** into noise."
  39   :group 'gnus-visual)
  40
  41 (defcustom earcon-auto-play nil
  42   "When True, automatically play sounds as well as buttonize them."
  43   :type 'boolean
  44   :group 'earcon)
  45
  46 (defcustom earcon-prefix "**"
  47   "String denoting the start of an earcon."
  48   :type 'string
  49   :group 'earcon)
  50
  51 (defcustom earcon-suffix "**"
  52   "String denoting the end of an earcon."
  53   :type 'string
  54   :group 'earcon)
  55
  56 (defcustom earcon-regexp-alist
  57   '(("boring" 1 "Boring.au")
  58     ("evil[ \t]+laugh" 1 "Evil_Laugh.au")
  59     ("gag\\|puke" 1 "Puke.au")
  60     ("snicker" 1 "Snicker.au")
  61     ("meow" 1 "catmeow.au")
  62     ("sob\\|boohoo" 1 "cry.wav")
  63     ("drum[ \t]*roll" 1 "drumroll.au")
  64     ("blast" 1 "explosion.au")
  65     ("flush\\|plonk!*" 1 "flush.au")
  66     ("kiss" 1 "kiss.wav")
  67     ("tee[ \t]*hee" 1 "laugh.au")
  68     ("shoot" 1 "shotgun.wav")
  69     ("yawn" 1 "snore.wav")
  70     ("cackle" 1 "witch.au")
  71     ("yell\\|roar" 1 "yell2.au")
  72     ("whoop-de-doo" 1 "whistle.au"))
  73   "A list of regexps to map earcons to real sounds."
  74   :type '(repeat (list regexp
  75                        (integer :tag "Match")
  76                        (string :tag "Sound")))
  77   :group 'earcon)
  78
  79 (defvar earcon-button-marker-list nil)
  80 (make-variable-buffer-local 'earcon-button-marker-list)
  81
  82
  83
  84 ;;; FIXME!! clone of code from gnus-vis.el FIXME!!
  85 (defun earcon-article-push-button (event)
  86   "Check text under the mouse pointer for a callback function.
  87 If the text under the mouse pointer has a `earcon-callback' property,
  88 call it with the value of the `earcon-data' text property."
  89   (interactive "e")
  90   (set-buffer (window-buffer (posn-window (event-start event))))
  91   (let* ((pos (posn-point (event-start event)))
  92          (data (get-text-property pos 'earcon-data))
  93          (fun (get-text-property pos 'earcon-callback)))
  94     (if fun (funcall fun data))))
  95
  96 (defun earcon-article-press-button ()
  97   "Check text at point for a callback function.
  98 If the text at point has a `earcon-callback' property,
  99 call it with the value of the `earcon-data' text property."
 100   (interactive)
 101   (let* ((data (get-text-property (point) 'earcon-data))
 102          (fun (get-text-property (point) 'earcon-callback)))
 103     (if fun (funcall fun data))))
 104
 105 (defun earcon-article-prev-button (n)
 106   "Move point to N buttons backward.
 107 If N is negative, move forward instead."
 108   (interactive "p")
 109   (earcon-article-next-button (- n)))
 110
 111 (defun earcon-article-next-button (n)
 112   "Move point to N buttons forward.
 113 If N is negative, move backward instead."
 114   (interactive "p")
 115   (let ((function (if (< n 0) 'previous-single-property-change
 116                     'next-single-property-change))
 117         (inhibit-point-motion-hooks t)
 118         (backward (< n 0))
 119         (limit (if (< n 0) (point-min) (point-max))))
 120     (setq n (abs n))
 121     (while (and (not (= limit (point)))
 122                 (> n 0))
 123       ;; Skip past the current button.
 124       (when (get-text-property (point) 'earcon-callback)
 125         (goto-char (funcall function (point) 'earcon-callback nil limit)))
 126       ;; Go to the next (or previous) button.
 127       (gnus-goto-char (funcall function (point) 'earcon-callback nil limit))
 128       ;; Put point at the start of the button.
 129       (when (and backward (not (get-text-property (point) 'earcon-callback)))
 130         (goto-char (funcall function (point) 'earcon-callback nil limit)))
 131       ;; Skip past intangible buttons.
 132       (when (get-text-property (point) 'intangible)
 133         (incf n))
 134       (decf n))
 135     (unless (zerop n)
 136       (gnus-message 5 "No more buttons"))
 137     n))
 138
 139 (defun earcon-article-add-button (from to fun &optional data)
 140   "Create a button between FROM and TO with callback FUN and data DATA."
 141   (and (boundp gnus-article-button-face)
 142        gnus-article-button-face
 143        (gnus-overlay-put (gnus-make-overlay from to)
 144                          'face gnus-article-button-face))
 145   (gnus-add-text-properties
 146    from to
 147    (nconc (and gnus-article-mouse-face
 148                (list gnus-mouse-face-prop gnus-article-mouse-face))
 149           (list 'gnus-callback fun)
 150           (and data (list 'gnus-data data)))))
 151
 152 (defun earcon-button-entry ()
 153   ;; Return the first entry in `gnus-button-alist' matching this place.
 154   (let ((alist earcon-regexp-alist)
 155         (case-fold-search t)
 156         (entry nil))
 157     (while alist
 158       (setq entry (pop alist))
 159       (if (looking-at (car entry))
 160           (setq alist nil)
 161         (setq entry nil)))
 162     entry))
 163
 164
 165 (defun earcon-button-push (marker)
 166   ;; Push button starting at MARKER.
 167   (save-excursion
 168     (set-buffer gnus-article-buffer)
 169     (goto-char marker)
 170     (let* ((entry (earcon-button-entry))
 171            (inhibit-point-motion-hooks t)
 172            (fun 'gnus-audio-play)
 173            (args (list (nth 2 entry))))
 174       (cond
 175        ((fboundp fun)
 176         (apply fun args))
 177        ((and (boundp fun)
 178              (fboundp (symbol-value fun)))
 179         (apply (symbol-value fun) args))
 180        (t
 181         (gnus-message 1 "You must define `%S' to use this button"
 182                       (cons fun args)))))))
 183
 184 ;;; FIXME!! clone of code from gnus-vis.el FIXME!!
 185
 186 ;;;###interactive
 187 (defun earcon-region (beg end)
 188   "Play Sounds in the region between point and mark."
 189   (interactive "r")
 190   (earcon-buffer (current-buffer) beg end))
 191
 192 ;;;###interactive
 193 (defun earcon-buffer (&optional buffer st nd)
 194   (interactive)
 195   (save-excursion
 196     ;; clear old markers.
 197     (if (boundp 'earcon-button-marker-list)
 198         (while earcon-button-marker-list
 199           (set-marker (pop earcon-button-marker-list) nil))
 200       (setq earcon-button-marker-list nil))
 201     (and buffer (set-buffer buffer))
 202     (let ((buffer-read-only nil)
 203           (inhibit-point-motion-hooks t)
 204           (case-fold-search t)
 205           (alist earcon-regexp-alist)
 206           beg entry regexp)
 207       (goto-char (point-min))
 208       (setq beg (point))
 209       (while (setq entry (pop alist))
 210         (setq regexp (concat (regexp-quote earcon-prefix)
 211                              ".*\\("
 212                              (car entry)
 213                              "\\).*"
 214                              (regexp-quote earcon-suffix)))
 215         (goto-char beg)
 216         (while (re-search-forward regexp nil t)
 217           (let* ((start (and entry (match-beginning 1)))
 218                  (end (and entry (match-end 1)))
 219                  (from (match-beginning 1)))
 220             (earcon-article-add-button
 221              start end 'earcon-button-push
 222              (car (push (set-marker (make-marker) from)
 223                         earcon-button-marker-list)))
 224             (gnus-audio-play (caddr entry))))))))
 225
 226 ;;;###autoload
 227 (defun gnus-earcon-display ()
 228   "Play sounds in message buffers."
 229   (interactive)
 230   (save-excursion
 231     (set-buffer gnus-article-buffer)
 232     (goto-char (point-min))
 233     ;; Skip headers
 234     (unless (search-forward "\n\n" nil t)
 235       (goto-char (point-max)))
 236     (sit-for 0)
 237     (earcon-buffer (current-buffer) (point))))
 238
 239 ;;;***
 240
 241 (provide 'earcon)
 242
 243 (run-hooks 'earcon-load-hook)
 244
 245 ;;; earcon.el ends here