-;;;; clef.scm -- Clef settings
+;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; source file of the GNU LilyPond music typesetter
+;;;; Copyright (C) 2004--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;;
-;;;; (c) 2004--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;; LilyPond 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 3 of the License, or
+;;;; (at your option) any later version.
+;;;;
+;;;; LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
;; (name . (glyph clef-position octavation))
(set! oct
(* (if (equal? (match:substring match 2) "^") -1 1)
(- (string->number (match:substring match 3)) 1)))))
- (set! e (assoc clef-name supported-clefs))
- (if (pair? e)
+ (set! e (assoc-get clef-name supported-clefs))
+ (if e
(let* ((musics (map make-prop-set
- `(((symbol . clefGlyph) (value . ,(cadr e)))
+ `(((symbol . clefGlyph) (value . ,(car e)))
((symbol . middleCClefPosition)
(value . ,(+ oct
- (caddr e)
- (cdr (assoc (cadr e) c0-pitch-alist)))))
- ((symbol . clefPosition) (value . ,(caddr e)))
+ (cadr e)
+ (assoc-get (car e) c0-pitch-alist))))
+ ((symbol . clefPosition) (value . ,(cadr e)))
((symbol . clefOctavation) (value . ,(- oct))))))
(recalc-mid-C (make-music 'ApplyContext))
(seq (make-music 'SequentialMusic
(sort (map car supported-clefs) string<?)))
(make-music 'Music)))))
+;; a function to add new clefs at runtime
+(define-public (add-new-clef clef-name clef-glyph clef-position octavation c0-position)
+ "Append the entries for a clef symbol to supported clefs and c0-pitch-alist"
+ (set! supported-clefs
+ (acons clef-name (list clef-glyph clef-position octavation) supported-clefs))
+ (set! c0-pitch-alist
+ (acons clef-glyph c0-position c0-pitch-alist)))