-;;;; translation-functions.scm --
+;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; source file of the GNU LilyPond music typesetter
-;;;;
-;;;; (c) 1998--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;; (c) 1998--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;; Jan Nieuwenhuizen <janneke@gnu.org>
+;;;;
+;;;; 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/>.
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; metronome marks
-(define-public (format-metronome-markup text dur count context)
- (let* ((hide-note (eq? #t (ly:context-property context 'tempoHideNote))))
+
+(define-public (format-metronome-markup event context)
+ (let ((hide-note (ly:context-property context 'tempoHideNote #f))
+ (text (ly:event-property event 'text))
+ (dur (ly:event-property event 'tempo-unit))
+ (count (ly:event-property event 'metronome-count)))
+
(metronome-markup text dur count hide-note)))
(define-public (metronome-markup text dur count hide-note)
(let* ((note-mark (if (and (not hide-note) (ly:duration? dur))
- (make-smaller-markup
- (make-note-by-number-markup (ly:duration-log dur)
- (ly:duration-dot-count dur)
- 1))
- #f))
- (note-markup (if (and (not hide-note) (number? count) (> count 0) )
- (make-concat-markup (list
- (make-general-align-markup Y DOWN note-mark)
- (make-simple-markup " ")
- (make-simple-markup "=")
- (make-simple-markup " ")
- (make-simple-markup (number->string count))))
- #f))
+ (make-smaller-markup
+ (make-note-by-number-markup (ly:duration-log dur)
+ (ly:duration-dot-count dur)
+ 1))
+ #f))
+ (count-markup (cond ((number? count)
+ (if (> count 0)
+ (make-simple-markup (number->string count))
+ #f))
+ ((pair? count)
+ (make-concat-markup
+ (list
+ (make-simple-markup (number->string (car count)))
+ (make-simple-markup " ")
+ (make-simple-markup "–")
+ (make-simple-markup " ")
+ (make-simple-markup (number->string (cdr count))))))
+ (else #f)))
+ (note-markup (if (and (not hide-note) count-markup)
+ (make-concat-markup
+ (list
+ (make-general-align-markup Y DOWN note-mark)
+ (make-simple-markup " ")
+ (make-simple-markup "=")
+ (make-simple-markup " ")
+ count-markup))
+ #f))
(text-markup (if (not (null? text))
- (make-bold-markup text)
- #f)))
+ (make-bold-markup text)
+ #f)))
(if text-markup
- (if (and note-markup (not hide-note))
- (make-line-markup (list text-markup
- (make-concat-markup (list (make-simple-markup "(")
- note-markup
- (make-simple-markup ")")))))
- (make-line-markup (list text-markup)))
- (if note-markup
- (make-line-markup (list note-markup))
- (make-null-markup)))))
+ (if (and note-markup (not hide-note))
+ (make-line-markup (list text-markup
+ (make-concat-markup
+ (list (make-simple-markup "(")
+ note-markup
+ (make-simple-markup ")")))))
+ (make-line-markup (list text-markup)))
+ (if note-markup
+ (make-line-markup (list note-markup))
+ (make-null-markup)))))
(define-public (format-mark-alphabet mark context)
(make-bold-markup (make-markalphabet-markup (1- mark))))
(make-bold-markup (number->string mark)))
(define-public (format-mark-barnumbers mark context)
- (make-bold-markup (number->string (ly:context-property context 'currentBarNumber))))
+ (make-bold-markup (number->string (ly:context-property context
+ 'currentBarNumber))))
(define-public (format-mark-box-letters mark context)
(make-bold-markup (make-box-markup (make-markletter-markup (1- mark)))))
(define-public (format-mark-box-barnumbers mark context)
(make-bold-markup (make-box-markup
- (number->string (ly:context-property context 'currentBarNumber)))))
+ (number->string (ly:context-property context
+ 'currentBarNumber)))))
(define-public (format-mark-circle-barnumbers mark context)
(make-bold-markup (make-circle-markup
- (number->string (ly:context-property context 'currentBarNumber)))))
+ (number->string (ly:context-property context
+ 'currentBarNumber)))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Bass figures.
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define-public (format-bass-figure figure event context)
(let* ((fig (ly:event-property event 'figure))
(fig-markup (if (number? figure)
- ;; this is not very elegant, but center-aligning all digits
- ;; is problematic with other markups, and shows problems
- ;; in the (lack of) overshoot of feta alphabet glyphs.
-
+ ;; this is not very elegant, but center-aligning
+ ;; all digits is problematic with other markups,
+ ;; and shows problems in the (lack of) overshoot
+ ;; of feta-alphabet glyphs.
((if (<= 10 figure)
- (lambda (y) (make-translate-scaled-markup (cons -0.7 0) y))
+ (lambda (y) (make-translate-scaled-markup
+ (cons -0.7 0) y))
identity)
(cond
- ((eq? #t (ly:event-property event 'diminished))
- (markup #:slashed-digit figure))
- ((eq? #t (ly:event-property event 'augmented-slash))
- (markup #:backslashed-digit figure))
- (else (markup #:number (number->string figure 10)))))
- #f
- ))
+ ((eq? #t (ly:event-property event 'diminished))
+ (markup #:slashed-digit figure))
+ ((eq? #t (ly:event-property event 'augmented-slash))
+ (markup #:backslashed-digit figure))
+ (else (markup #:number (number->string figure 10)))))
+ #f))
+
(alt (ly:event-property event 'alteration))
(alt-markup
(if (number? alt)
(if (not (= alt DOUBLE-SHARP))
-2 2)
(alteration->text-accidental-markup alt))
-
#f))
+
(plus-markup (if (eq? #t (ly:event-property event 'augmented))
(markup #:number "+")
#f))
(alt-dir (ly:context-property context 'figuredBassAlterationDirection))
- (plus-dir (ly:context-property context 'figuredBassPlusDirection))
- )
+ (plus-dir (ly:context-property context 'figuredBassPlusDirection)))
(if (and (not fig-markup) alt-markup)
(begin
;; hmm, how to get figures centered between note, and
;; lone accidentals too?
-
+
;; (if (markup? fig-markup)
;; (set!
;; fig-markup (markup #:translate (cons 1.0 0)
alt-dir
LEFT)
fig-markup
- #:pad-x 0.2 alt-markup
- )))
+ #:pad-x 0.2 alt-markup)))
-
(if plus-markup
(set! fig-markup
(if fig-markup
fig-markup
#:pad-x 0.2 plus-markup)
plus-markup)))
-
+
(if (markup? fig-markup)
(markup #:fontsize -2 fig-markup)
- empty-markup)
+ empty-markup)))
- ))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; fret diagrams
-(define-public (determine-frets context grob notes string-numbers)
-
- (define (ensure-number a b)
- (if (number? a)
- a
- b))
-
- (define (string-frets->dot-placement string-frets string-count)
- (let*
- ((desc (list->vector
- (map (lambda (x) (list 'mute (1+ x)))
- (iota string-count)))))
-
- (for-each (lambda (sf)
- (let*
- ((string (car sf))
- (fret (cadr sf))
- (finger (caddr sf)))
-
- (vector-set!
- desc (1- string)
- (if (= 0 fret)
- (list 'open string)
- (if finger
- (list 'place-fret string fret finger)
- (list 'place-fret string fret))
- ))
- ))
- 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*
- ((tunings (ly:context-property context 'stringTunings))
- (my-string-count (length tunings))
- (details (ly:grob-property grob 'fret-diagram-details))
- (predefined-frets
- (ly:context-property context 'predefinedDiagramTable))
- (minimum-fret (ensure-number
- (ly:context-property context 'minimumFret) 0))
- (max-stretch (ensure-number
- (ly:context-property context 'maximumFretStretch) 4))
- (string-frets (determine-frets-mf notes string-numbers
- minimum-fret max-stretch
- tunings))
- (pitches (map (lambda (x) (ly:event-property x 'pitch)) notes)))
+(define (create-fretboard context grob placement-list)
+ "Convert @var{placement-list} into a fretboard @var{grob}."
- (set! (ly:grob-property grob 'fret-diagram-details)
+ (let* ((tunings (ly:context-property context 'stringTunings))
+ (my-string-count (length tunings))
+ (details (ly:grob-property grob 'fret-diagram-details)))
- (if (null? details)
- (acons 'string-count (length tunings) '())
- (acons 'string-count (length tunings) details)))
- (set! (ly:grob-property grob 'dot-placement-list)
- (if predefined-frets
- (let ((predefined-fretboard
- (get-predefined-fretboard
- predefined-frets
- tunings
- pitches)))
- (if (null? predefined-fretboard)
- (string-frets->dot-placement
- 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
- minimum-fret max-stretch
- tunings)
-
- (define (calc-fret pitch string tuning)
- (- (ly:pitch-semitones pitch) (list-ref tuning (1- string))))
-
- (define (note-pitch a)
- (ly:event-property a 'pitch))
-
- (define (note-pitch>? a b)
- (ly:pitch<? (note-pitch b)
- (note-pitch a)))
-
- (define (note-finger ev)
- (let* ((articulations (ly:event-property ev 'articulations))
- (finger-found #f))
-
- (map (lambda (art)
- (let*
- ((num (ly:event-property art 'digit)))
-
- (if (and (eq? 'fingering-event (ly:event-property art 'class))
- (number? num))
+ ;; Add string-count from string-tunings to fret-diagram-details.
+ (set! (ly:grob-property grob 'fret-diagram-details)
+ (acons 'string-count my-string-count details))
+ ;; Create the dot-placement list for the grob
+ (set! (ly:grob-property grob 'dot-placement-list) placement-list)))
+
+(define-public
+ (determine-frets context notes specified-info . rest)
+ "Determine string numbers and frets for playing @var{notes}
+as a chord, given specified information @var{specified-info}.
+@var{specified-info} is a list with two list elements,
+specified strings @code{defined-strings} and
+specified fingerings @code{defined-fingers}. Only a fingering of@tie{}0
+will affect the fret selection, as it specifies an open string.
+If @code{defined-strings} is @code{'()}, the context property
+@code{defaultStrings} will be used as a list of defined strings.
+Will look for predefined fretboards if @code{predefinedFretboardTable}
+is not @code {#f}. If @var{rest} is present, it contains the
+@code{FretBoard} grob, and a fretboard will be
+created. Otherwise, a list of @code{(string fret finger)} lists will
+be returned."
+
+ ;; helper functions
+
+ (define (string-frets->placement-list string-frets string-count)
+ "Convert @var{string-frets} to @code{fret-diagram-verbose}
+dot placement entries."
+ (let* ((placements (list->vector
+ (map (lambda (x) (list 'mute x))
+ (iota string-count 1)))))
+
+ (for-each (lambda (sf)
+ (let* ((string (car sf))
+ (fret (cadr sf))
+ (finger (caddr sf)))
+ (vector-set!
+ placements
+ (1- string)
+ (if (= 0 fret)
+ (list 'open string)
+ (if finger
+ (list 'place-fret string fret finger)
+ (list 'place-fret string fret))))))
+ string-frets)
+ (vector->list placements)))
+
+ (define (placement-list->string-frets placement-list)
+ "Convert @var{placement-list} to string-fret list."
+ (map (lambda (x) (if (eq? (car x) 'place-fret)
+ (cdr x)
+ (list (cadr x) 0)))
+ (filter (lambda (l) (or (eq? (car l) 'place-fret)
+ (eq? (car l) 'open)))
+ placement-list)))
+
+ (define (entry-count art-list)
+ "Count the number of entries in a list of articulations."
+ (length (filter (lambda (x) (not (null? x)))
+ art-list)))
+
+ (define (determine-frets-and-strings
+ notes
+ defined-strings
+ defined-fingers
+ minimum-fret
+ maximum-stretch
+ tuning)
+ "Determine the frets and strings used to play the notes in
+@var{notes}, given @var{defined-strings} and @var{defined-fingers}
+along with @var{minimum-fret}, @var{maximum-stretch}, and
+@var{tuning}. Returns a list of @code{(string fret finger) lists."
+
+ (define specified-frets '())
+ (define free-strings (iota (length tuning) 1))
+
+ (define (calc-fret pitch string tuning)
+ "Calculate the fret to play @var{pitch} on @var{string} with
+@var{tuning}."
+ (- (ly:pitch-semitones pitch) (ly:pitch-semitones (list-ref tuning (1- string)))))
+
+ (define (note-pitch note)
+ "Get the pitch (in semitones) from @var{note}."
+ (ly:event-property note 'pitch))
+
+ (define (note-finger ev)
+ "Get the fingering from @var{ev}. Return @var{#f}
+if no fingering is present."
+ (let* ((articulations (ly:event-property ev 'articulations))
+ (finger-found #f))
+ (map (lambda (art)
+ (let* ((num (ly:event-property art 'digit)))
+
+ (if (and (eq? 'fingering-event (ly:event-property art 'class))
+ (number? num)
+ (> num 0))
(set! finger-found num))))
- articulations)
-
- finger-found))
-
- (define (note-string ev)
- (let* ((articulations (ly:event-property ev 'articulations))
- (string-found #f))
-
- (map (lambda (art)
- (let*
- ((num (ly:event-property art 'string-number)))
-
- (if (number? num)
- (set! string-found num))))
- articulations)
-
- string-found))
-
- (define (del-string string)
- (if (number? string)
- (set! free-strings
- (delete string free-strings))))
- (define specified-frets '())
- (define free-strings '())
-
- (define (close-enough fret)
- (reduce
- (lambda (x y)
- (and x y))
- #t
- (map (lambda (specced-fret)
- (> max-stretch (abs (- fret specced-fret))))
- specified-frets)
- ))
-
- (define (string-qualifies string pitch)
- (let*
- ((fret (calc-fret pitch string tunings)))
-
- (and (>= fret minimum-fret)
- (close-enough fret))
-
- ))
-
- (define string-fret-fingering-tuples '())
- (define (set-fret note string)
- (set! string-fret-fingering-tuples
- (cons (list string
- (calc-fret (ly:event-property note 'pitch)
- string tunings)
- (note-finger note))
- string-fret-fingering-tuples))
- (del-string string))
-
-
- ;;; body.
- (set! specified-frets
- (filter identity (map
- (lambda (note)
- (if (note-string note)
- (calc-fret (note-pitch note)
- (note-string note) tunings)
- #f))
- notes)))
-
-
- (set! free-strings (map 1+ (iota (length tunings))))
-
- (for-each (lambda (note)
- (del-string (note-string note)))
- notes)
-
-
- (for-each
- (lambda (note)
- (if (note-string note)
- (set-fret note (note-string note))
- (let*
- ((fit-string (find (lambda (string)
- (string-qualifies string (note-pitch note)))
- free-strings)))
- (if fit-string
- (set-fret note fit-string)
- (ly:warning "No string for pitch ~a (given frets ~a)"
- (note-pitch note)
- specified-frets))
-
- )))
- (sort notes note-pitch>?))
-
- string-fret-fingering-tuples)
+ articulations)
+ finger-found))
+
+ (define (string-number event)
+ "Get the string-number from @var{event}. Return @var{#f}
+if no string-number is present."
+ (let ((num (ly:event-property event 'string-number)))
+ (if (number? num)
+ num
+ #f)))
+
+ (define (delete-free-string string)
+ (if (number? string)
+ (set! free-strings
+ (delete string free-strings))))
+
+ (define (close-enough fret)
+ "Decide if @var{fret} is acceptable, given the already used frets."
+ (if (null? specified-frets)
+ #t
+ (reduce
+ (lambda (x y)
+ (and x y))
+ #t
+ (map (lambda (specced-fret)
+ (or (eq? 0 specced-fret)
+ (>= maximum-stretch (abs (- fret specced-fret)))))
+ specified-frets))))
+
+ (define (string-qualifies string pitch)
+ "Can @var{pitch} be played on @var{string}, given already placed
+notes?"
+ (let* ((fret (calc-fret pitch string tuning)))
+ (and (>= fret minimum-fret)
+ (close-enough fret))))
+
+ (define (open-string string pitch)
+ "Is @var{pitch} and open-string note on @var{string}, given
+the current tuning?"
+ (let* ((fret (calc-fret pitch string tuning)))
+ (eq? fret 0)))
+
+ (define (set-fret! pitch-entry string finger)
+ (let ((this-fret (calc-fret (car pitch-entry)
+ string
+ tuning)))
+ (if (< this-fret 0)
+ (ly:warning (_ "Negative fret for pitch ~a on string ~a")
+ (car pitch-entry) string))
+ (delete-free-string string)
+ (set! specified-frets (cons this-fret specified-frets))
+ (list-set! string-fret-fingers
+ (cdr pitch-entry)
+ (list string this-fret finger))))
+
+ (define (kill-note! string-fret-fingers note-index)
+ (list-set! string-fret-fingers note-index (list #f #t)))
+
+ (define string-fret-fingers
+ (map (lambda (string finger)
+ (if (null? finger)
+ (list string #f)
+ (list string #f finger)))
+ defined-strings defined-fingers))
+
+ ;;; body of determine-frets-and-strings
+ (let* ((pitch-alist (apply (lambda (mylist)
+ (let ((index -1))
+ (map (lambda (note)
+ (begin
+ (set! index (1+ index))
+ (cons (note-pitch note)
+ index)))
+ mylist)))
+ notes '()))
+ (pitches (map note-pitch notes)))
+
+ ;; handle notes with strings assigned and fingering of 0
+ (for-each
+ (lambda (pitch-entry string-fret-finger)
+ (let* ((string (list-ref string-fret-finger 0))
+ (finger (if (eq? (length string-fret-finger) 3)
+ (list-ref string-fret-finger 2)
+ '()))
+ (pitch (car pitch-entry))
+ (digit (if (null? finger)
+ #f
+ finger)))
+ (if (or (not (null? string))
+ (eq? digit 0))
+ (if (eq? digit 0)
+ ;; here we handle fingers of 0 -- open strings
+ (let ((fit-string
+ (find (lambda (string)
+ (open-string string pitch))
+ free-strings)))
+ (if fit-string
+ (set-fret! pitch-entry fit-string #f)
+ (ly:warning (_ "No open string for pitch ~a")
+ pitch)))
+ ;; here we handle assigned strings
+ (let ((this-fret
+ (calc-fret pitch string tuning))
+ (handle-negative
+ (ly:context-property context
+ 'handleNegativeFrets
+ 'recalculate)))
+ (cond ((or (>= this-fret 0)
+ (eq? handle-negative 'include))
+ (set-fret! pitch-entry string finger))
+ ((eq? handle-negative 'recalculate)
+ (begin
+ (ly:warning
+ (_ "Requested string for pitch requires negative fret: string ~a pitch ~a")
+ string
+ pitch)
+ (ly:warning (_ "Ignoring string request and recalculating."))
+ (list-set! string-fret-fingers
+ (cdr pitch-entry)
+ (if (null? finger)
+ (list '() #f)
+ (list '() #f finger)))))
+ ((eq? handle-negative 'ignore)
+ (begin
+ (ly:warning
+ (_ "Requested string for pitch requires negative fret: string ~a pitch ~a")
+ string
+ pitch)
+ (ly:warning (_ "Ignoring note in tablature."))
+ (kill-note! string-fret-fingers
+ (cdr pitch-entry))))))))))
+ pitch-alist string-fret-fingers)
+ ;; handle notes without strings assigned -- sorted by pitch, so
+ ;; we need to use the alist to have the note number available
+ (for-each
+ (lambda (pitch-entry)
+ (let* ((string-fret-finger (list-ref string-fret-fingers
+ (cdr pitch-entry)))
+ (string (list-ref string-fret-finger 0))
+ (finger (if (eq? (length string-fret-finger) 3)
+ (list-ref string-fret-finger 2)
+ '()))
+ (pitch (car pitch-entry))
+ (fit-string
+ (find (lambda (string)
+ (string-qualifies string pitch))
+ free-strings)))
+ (if (not (list-ref string-fret-finger 1))
+ (if fit-string
+ (set-fret! pitch-entry fit-string finger)
+ (begin
+ (ly:warning (_ "No string for pitch ~a (given frets ~a)")
+ pitch
+ specified-frets)
+ (kill-note! string-fret-fingers
+ (cdr pitch-entry)))))))
+ (sort pitch-alist (lambda (pitch-entry-a pitch-entry-b)
+ (ly:pitch<? (car pitch-entry-b)
+ (car pitch-entry-a)))))
+ string-fret-fingers)) ;; end of determine-frets-and-strings
+
+ (define (get-predefined-fretboard predefined-fret-table tuning pitches)
+ "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. Returns a placement-list."
+
+ (define (get-fretboard key)
+ (let ((hash-handle
+ (hash-get-handle predefined-fret-table key)))
+ (if hash-handle
+ (cdr hash-handle) ; return table entry
+ '())))
+
+ ;; body of get-predefined-fretboard
+ (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 of determine-frets
+ (let* ((predefined-fret-table
+ (ly:context-property context 'predefinedDiagramTable))
+ (tunings (ly:context-property context 'stringTunings))
+ (string-count (length tunings))
+ (grob (if (null? rest) '() (car rest)))
+ (pitches (map (lambda (x) (ly:event-property x 'pitch)) notes))
+ (defined-strings (map (lambda (x)
+ (if (null? x)
+ x
+ (ly:event-property x 'string-number)))
+ (car specified-info)))
+ (defined-fingers (map (lambda (x)
+ (if (null? x)
+ x
+ (ly:event-property x 'digit)))
+ (cadr specified-info)))
+ (default-strings (ly:context-property context 'defaultStrings '()))
+ (strings-used (if (and (zero? (entry-count defined-strings))
+ (not (zero? (entry-count default-strings))))
+ default-strings
+ defined-strings))
+ (predefined-fretboard
+ (if predefined-fret-table
+ (get-predefined-fretboard
+ predefined-fret-table
+ tunings
+ pitches)
+ '())))
+ (if (null? predefined-fretboard)
+ (let ((string-frets
+ (determine-frets-and-strings
+ notes
+ strings-used
+ defined-fingers
+ (ly:context-property context 'minimumFret 0)
+ (ly:context-property context 'maximumFretStretch 4)
+ tunings)))
+ (if (null? grob)
+ string-frets
+ (create-fretboard
+ context grob (string-frets->placement-list
+ (filter (lambda (entry)
+ (car entry))
+ string-frets)
+ string-count))))
+ (if (null? grob)
+ (placement-list->string-frets predefined-fretboard)
+ (create-fretboard context grob predefined-fretboard)))))
+
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; tablature
+
+;; The TabNoteHead tablatureFormat callbacks.
+
+;; Calculate the fret from pitch and string number as letter
+;; The fret letter is taken from 'fretLabels if present
+(define-public (fret-letter-tablature-format
+ context string-number fret-number)
+ (let ((labels (ly:context-property context 'fretLabels)))
+ (make-vcenter-markup
+ (cond
+ ((= 0 (length labels))
+ (string (integer->char (+ fret-number (char->integer #\a)))))
+ ((and (<= 0 fret-number) (< fret-number (length labels)))
+ (list-ref labels fret-number))
+ (else
+ (ly:warning (_ "No label for fret ~a (on string ~a);
+only ~a fret labels provided")
+ fret-number string-number (length labels))
+ ".")))))
+
+;; Display the fret number as a number
+(define-public (fret-number-tablature-format
+ context string-number fret-number)
+ (make-vcenter-markup
+ (format "~a" fret-number)))
+
+;; The 5-string banjo has got a extra string, the fifth (duh), which
+;; starts at the fifth fret on the neck. Frets on the fifth string
+;; are referred to relative to the other frets:
+;; the "first fret" on the fifth string is really the sixth fret
+;; on the banjo neck.
+;; We solve this by defining a new fret-number-tablature function:
+(define-public (fret-number-tablature-format-banjo
+ context string-number fret-number)
+ (make-vcenter-markup
+ (number->string (cond
+ ((and (> fret-number 0) (= string-number 5))
+ (+ fret-number 5))
+ (else fret-number)))))
+
+;; Tab note head staff position functions
+;;
+;; Define where in the staff to display a given string. Some forms of
+;; tablature put the tab note heads in the spaces, rather than on the
+;; lines
+
+(define-public (tablature-position-on-lines context string-number)
+ (let* ((string-tunings (ly:context-property context 'stringTunings))
+ (string-count (length string-tunings))
+ (string-one-topmost (ly:context-property context 'stringOneTopmost))
+ (staff-line (- (* 2 string-number) string-count 1)))
+ (if string-one-topmost
+ (- staff-line)
+ staff-line)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; bar numbers
+
+(define-public ((every-nth-bar-number-visible n) barnum)
+ (= 0 (modulo barnum n)))
+
+(define-public ((modulo-bar-number-visible n m) barnum)
+ (and (> barnum 1) (= m (modulo barnum n))))
+
+(define-public ((set-bar-number-visibility n) tr)
+ (let ((bn (ly:context-property tr 'currentBarNumber)))
+ (ly:context-set-property! tr 'barNumberVisibility
+ (modulo-bar-number-visible n (modulo bn n)))))
+
+(define-public (first-bar-number-invisible barnum) (> barnum 1))
+
+(define-public (all-bar-numbers-visible barnum) #t)
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; percent repeat counters
+
+(define-public ((every-nth-repeat-count-visible n) count context)
+ (= 0 (modulo count n)))
+
+(define-public (all-repeat-counts-visible count context) #t)
projects / lilypond.git / blobdiff