;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 1998--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;; (c) 1998--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;; Jan Nieuwenhuizen <janneke@gnu.org>
;; metronome marks
))
string-frets)
(vector->list desc)))
+
+ (define (get-predefined-fretboard predefined-fret-table tuning pitches)
+; (_i "Search through @var{predefined-fret-table} looking for a predefined
+;fretboard with a key of @var{(tuning . pitches)}. The search will check
+;both up and down an octave in order to accomodate transposition of the
+;chords.")
+ (define (get-fretboard key)
+ (let ((hash-handle
+ (hash-get-handle predefined-fret-table key)))
+ (if hash-handle
+ (cdr hash-handle) ; return table entry
+ '())))
+
+ (let ((test-fretboard (get-fretboard (cons tuning pitches))))
+ (if (not (null? test-fretboard))
+ test-fretboard
+ (let ((test-fretboard
+ (get-fretboard
+ (cons tuning (map (lambda (x) (shift-octave x 1)) pitches)))))
+ (if (not (null? test-fretboard))
+ test-fretboard
+ (get-fretboard
+ (cons tuning (map (lambda (x) (shift-octave x -1)) pitches))))))))
;; body.
(let*
(acons 'string-count (length tunings) details)))
(set! (ly:grob-property grob 'dot-placement-list)
(if predefined-frets
- (let ((hash-handle
- (hash-get-handle
+ (let ((predefined-fretboard
+ (get-predefined-fretboard
predefined-frets
- (cons tunings pitches))))
- (if hash-handle
- (cdr hash-handle) ;found default diagram
+ tunings
+ pitches)))
+ (if (null? predefined-fretboard)
(string-frets->dot-placement
- string-frets my-string-count)))
+ string-frets my-string-count) ;no predefined diagram
+ predefined-fretboard)) ;found default diagram
(string-frets->dot-placement string-frets my-string-count)))))
(define-public (determine-frets-mf notes string-numbers