1 ;;;; This file is part of LilyPond, the GNU music typesetter.
3 ;;;; (c) 1998--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
4 ;;;; Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; LilyPond is free software: you can redistribute it and/or modify
7 ;;;; it under the terms of the GNU General Public License as published by
8 ;;;; the Free Software Foundation, either version 3 of the License, or
9 ;;;; (at your option) any later version.
11 ;;;; LilyPond is distributed in the hope that it will be useful,
12 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;;;; GNU General Public License for more details.
16 ;;;; You should have received a copy of the GNU General Public License
17 ;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
23 (define-public (format-metronome-markup event context)
24 (let ((hide-note (ly:context-property context 'tempoHideNote #f))
25 (text (ly:event-property event 'text))
26 (dur (ly:event-property event 'tempo-unit))
27 (count (ly:event-property event 'metronome-count)))
29 (metronome-markup text dur count hide-note)))
31 (define-public (metronome-markup text dur count hide-note)
32 (let* ((note-mark (if (and (not hide-note) (ly:duration? dur))
34 (make-note-by-number-markup (ly:duration-log dur)
35 (ly:duration-dot-count dur)
38 (count-markup (cond ((number? count)
40 (make-simple-markup (number->string count))
45 (make-simple-markup (number->string (car count)))
46 (make-simple-markup " ")
47 (make-simple-markup "–")
48 (make-simple-markup " ")
49 (make-simple-markup (number->string (cdr count))))))
51 (note-markup (if (and (not hide-note) count-markup)
54 (make-general-align-markup Y DOWN note-mark)
55 (make-simple-markup " ")
56 (make-simple-markup "=")
57 (make-simple-markup " ")
60 (text-markup (if (not (null? text))
61 (make-bold-markup text)
64 (if (and note-markup (not hide-note))
65 (make-line-markup (list text-markup
67 (list (make-simple-markup "(")
69 (make-simple-markup ")")))))
70 (make-line-markup (list text-markup)))
72 (make-line-markup (list note-markup))
73 (make-null-markup)))))
75 (define-public (format-mark-alphabet mark context)
76 (make-bold-markup (make-markalphabet-markup (1- mark))))
78 (define-public (format-mark-box-alphabet mark context)
79 (make-bold-markup (make-box-markup (make-markalphabet-markup (1- mark)))))
81 (define-public (format-mark-circle-alphabet mark context)
82 (make-bold-markup (make-circle-markup (make-markalphabet-markup (1- mark)))))
84 (define-public (format-mark-letters mark context)
85 (make-bold-markup (make-markletter-markup (1- mark))))
87 (define-public (format-mark-numbers mark context)
88 (make-bold-markup (number->string mark)))
90 (define-public (format-mark-barnumbers mark context)
91 (make-bold-markup (number->string (ly:context-property context
94 (define-public (format-mark-box-letters mark context)
95 (make-bold-markup (make-box-markup (make-markletter-markup (1- mark)))))
97 (define-public (format-mark-circle-letters mark context)
98 (make-bold-markup (make-circle-markup (make-markletter-markup (1- mark)))))
100 (define-public (format-mark-box-numbers mark context)
101 (make-bold-markup (make-box-markup (number->string mark))))
103 (define-public (format-mark-circle-numbers mark context)
104 (make-bold-markup (make-circle-markup (number->string mark))))
106 (define-public (format-mark-box-barnumbers mark context)
107 (make-bold-markup (make-box-markup
108 (number->string (ly:context-property context
109 'currentBarNumber)))))
111 (define-public (format-mark-circle-barnumbers mark context)
112 (make-bold-markup (make-circle-markup
113 (number->string (ly:context-property context
114 'currentBarNumber)))))
117 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
120 (define-public (format-bass-figure figure event context)
121 (let* ((fig (ly:event-property event 'figure))
122 (fig-markup (if (number? figure)
124 ;; this is not very elegant, but center-aligning
125 ;; all digits is problematic with other markups,
126 ;; and shows problems in the (lack of) overshoot
127 ;; of feta-alphabet glyphs.
129 (lambda (y) (make-translate-scaled-markup
134 ((eq? #t (ly:event-property event 'diminished))
135 (markup #:slashed-digit figure))
136 ((eq? #t (ly:event-property event 'augmented-slash))
137 (markup #:backslashed-digit figure))
138 (else (markup #:number (number->string figure 10)))))
141 (alt (ly:event-property event 'alteration))
145 #:general-align Y DOWN #:fontsize
146 (if (not (= alt DOUBLE-SHARP))
148 (alteration->text-accidental-markup alt))
151 (plus-markup (if (eq? #t (ly:event-property event 'augmented))
152 (markup #:number "+")
155 (alt-dir (ly:context-property context 'figuredBassAlterationDirection))
156 (plus-dir (ly:context-property context 'figuredBassPlusDirection)))
158 (if (and (not fig-markup) alt-markup)
160 (set! fig-markup (markup #:left-align #:pad-around 0.3 alt-markup))
161 (set! alt-markup #f)))
164 ;; hmm, how to get figures centered between note, and
165 ;; lone accidentals too?
167 ;; (if (markup? fig-markup)
169 ;; fig-markup (markup #:translate (cons 1.0 0)
170 ;; #:center-align fig-markup)))
174 (markup #:put-adjacent
175 X (if (number? alt-dir)
179 #:pad-x 0.2 alt-markup)))
184 (markup #:put-adjacent
185 X (if (number? plus-dir)
189 #:pad-x 0.2 plus-markup)
192 (if (markup? fig-markup)
193 (markup #:fontsize -2 fig-markup)
197 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
200 (define (create-fretboard context grob placement-list)
201 "Convert @var{placement-list} into a fretboard @var{grob}."
203 (let* ((tunings (ly:context-property context 'stringTunings))
204 (my-string-count (length tunings))
205 (details (ly:grob-property grob 'fret-diagram-details)))
207 ;; Add string-count from string-tunings to fret-diagram-details.
208 (set! (ly:grob-property grob 'fret-diagram-details)
209 (acons 'string-count my-string-count details))
210 ;; Create the dot-placement list for the grob
211 (set! (ly:grob-property grob 'dot-placement-list) placement-list)))
214 (determine-frets context notes specified-info . rest)
215 "Determine string numbers and frets for playing @var{notes}
216 as a chord, given specified information @var{specified-info}.
217 @var{specified-info} is a list with two list elements,
218 specified strings @code{defined-strings} and
219 specified fingerings @code{defined-fingers}. Only a fingering of@tie{}0
220 will affect the fret selection, as it specifies an open string.
221 If @code{defined-strings} is @code{'()}, the context property
222 @code{defaultStrings} will be used as a list of defined strings.
223 Will look for predefined fretboards if @code{predefinedFretboardTable}
224 is not @code {#f}. If @var{rest} is present, it contains the
225 @code{FretBoard} grob, and a fretboard will be
226 created. Otherwise, a list of @code{(string fret finger)} lists will
231 (define (string-frets->placement-list string-frets string-count)
232 "Convert @var{string-frets} to @code{fret-diagram-verbose}
233 dot placement entries."
234 (let* ((placements (list->vector
235 (map (lambda (x) (list 'mute x))
236 (iota string-count 1)))))
238 (for-each (lambda (sf)
239 (let* ((string (car sf))
248 (list 'place-fret string fret finger)
249 (list 'place-fret string fret))))))
251 (vector->list placements)))
253 (define (placement-list->string-frets placement-list)
254 "Convert @var{placement-list} to string-fret list."
255 (map (lambda (x) (if (eq? (car x) 'place-fret)
258 (filter (lambda (l) (or (eq? (car l) 'place-fret)
259 (eq? (car l) 'open)))
262 (define (entry-count art-list)
263 "Count the number of entries in a list of articulations."
264 (length (filter (lambda (x) (not (null? x)))
267 (define (determine-frets-and-strings
274 "Determine the frets and strings used to play the notes in
275 @var{notes}, given @var{defined-strings} and @var{defined-fingers}
276 along with @var{minimum-fret}, @var{maximum-stretch}, and
277 @var{tuning}. Returns a list of @code{(string fret finger) lists."
280 (define restrain-open-strings (ly:context-property context
283 (define specified-frets '())
284 (define free-strings (iota (length tuning) 1))
286 (define (calc-fret pitch string tuning)
287 "Calculate the fret to play @var{pitch} on @var{string} with
289 (* 2 (- (ly:pitch-tones pitch) (ly:pitch-tones (list-ref tuning (1- string))))))
291 (define (note-pitch note)
292 "Get the pitch (in semitones) from @var{note}."
293 (ly:event-property note 'pitch))
295 (define (note-finger ev)
296 "Get the fingering from @var{ev}. Return @var{#f}
297 if no fingering is present."
298 (let* ((articulations (ly:event-property ev 'articulations))
301 (let* ((num (ly:event-property art 'digit)))
303 (if (and (ly:in-event-class? art 'fingering-event)
306 (set! finger-found num))))
310 (define (string-number event)
311 "Get the string-number from @var{event}. Return @var{#f}
312 if no string-number is present."
313 (let ((num (ly:event-property event 'string-number)))
318 (define (delete-free-string string)
321 (delete string free-strings))))
323 (define (close-enough fret)
324 "Decide if @var{fret} is acceptable, given the already used frets."
325 (if (null? specified-frets)
331 (map (lambda (specced-fret)
332 (or (eq? 0 specced-fret)
333 (and (not restrain-open-strings)
335 (>= maximum-stretch (abs (- fret specced-fret)))))
338 (define (string-qualifies string pitch)
339 "Can @var{pitch} be played on @var{string}, given already placed
341 (let* ((fret (calc-fret pitch string tuning)))
342 (and (or (and (not restrain-open-strings)
344 (>= fret minimum-fret))
346 (close-enough fret))))
348 (define (open-string string pitch)
349 "Is @var{pitch} and open-string note on @var{string}, given
351 (let* ((fret (calc-fret pitch string tuning)))
354 (define (set-fret! pitch-entry string finger)
355 (let ((this-fret (calc-fret (car pitch-entry)
359 (ly:warning (_ "Negative fret for pitch ~a on string ~a")
360 (car pitch-entry) string)
361 (if (not (integer? this-fret))
362 (ly:warning (_ "Missing fret for pitch ~a on string ~a")
363 (car pitch-entry) string)))
364 (delete-free-string string)
365 (set! specified-frets (cons this-fret specified-frets))
366 (list-set! string-fret-fingers
368 (list string this-fret finger))))
370 (define (kill-note! string-fret-fingers note-index)
371 (list-set! string-fret-fingers note-index (list #f #t)))
373 (define string-fret-fingers
374 (map (lambda (string finger)
377 (list string #f finger)))
378 defined-strings defined-fingers))
380 ;;; body of determine-frets-and-strings
381 (let* ((pitch-alist (apply (lambda (mylist)
385 (set! index (1+ index))
386 (cons (note-pitch note)
390 (pitches (map note-pitch notes)))
392 ;; handle notes with strings assigned and fingering of 0
394 (lambda (pitch-entry string-fret-finger)
395 (let* ((string (list-ref string-fret-finger 0))
396 (finger (if (eq? (length string-fret-finger) 3)
397 (list-ref string-fret-finger 2)
399 (pitch (car pitch-entry))
400 (digit (if (null? finger)
403 (if (or (not (null? string))
406 ;; here we handle fingers of 0 -- open strings
408 (find (lambda (string)
409 (open-string string pitch))
412 (set-fret! pitch-entry fit-string #f)
413 (ly:warning (_ "No open string for pitch ~a")
415 ;; here we handle assigned strings
417 (calc-fret pitch string tuning))
419 (ly:context-property context
422 (cond ((or (and (>= this-fret 0) (integer? this-fret))
423 (eq? handle-negative 'include))
424 (set-fret! pitch-entry string finger))
425 ((eq? handle-negative 'recalculate)
428 (_ "Requested string for pitch requires negative fret: string ~a pitch ~a")
431 (ly:warning (_ "Ignoring string request and recalculating."))
432 (list-set! string-fret-fingers
436 (list '() #f finger)))))
437 ((eq? handle-negative 'ignore)
440 (_ "Requested string for pitch requires negative fret: string ~a pitch ~a")
443 (ly:warning (_ "Ignoring note in tablature."))
444 (kill-note! string-fret-fingers
445 (cdr pitch-entry))))))))))
446 pitch-alist string-fret-fingers)
447 ;; handle notes without strings assigned -- sorted by pitch, so
448 ;; we need to use the alist to have the note number available
450 (lambda (pitch-entry)
451 (let* ((string-fret-finger (list-ref string-fret-fingers
453 (string (list-ref string-fret-finger 0))
454 (finger (if (eq? (length string-fret-finger) 3)
455 (list-ref string-fret-finger 2)
457 (pitch (car pitch-entry))
459 (find (lambda (string)
460 (string-qualifies string pitch))
462 (if (not (list-ref string-fret-finger 1))
464 (set-fret! pitch-entry fit-string finger)
466 (ly:warning (_ "No string for pitch ~a (given frets ~a)")
469 (kill-note! string-fret-fingers
470 (cdr pitch-entry)))))))
471 (sort pitch-alist (lambda (pitch-entry-a pitch-entry-b)
472 (ly:pitch<? (car pitch-entry-b)
473 (car pitch-entry-a)))))
474 string-fret-fingers)) ;; end of determine-frets-and-strings
476 (define (get-predefined-fretboard predefined-fret-table tuning pitches)
477 "Search through @var{predefined-fret-table} looking for a predefined
478 fretboard with a key of @var{(tuning . pitches)}. The search will check
479 both up and down an octave in order to accomodate transposition of the
480 chords. Returns a placement-list."
482 (define (get-fretboard key)
484 (hash-get-handle predefined-fret-table key)))
486 (cdr hash-handle) ; return table entry
489 ;; body of get-predefined-fretboard
490 (let ((test-fretboard (get-fretboard (cons tuning pitches))))
491 (if (not (null? test-fretboard))
493 (let ((test-fretboard
495 (cons tuning (map (lambda (x) (shift-octave x 1)) pitches)))))
496 (if (not (null? test-fretboard))
499 (cons tuning (map (lambda (x) (shift-octave x -1))
502 ;; body of determine-frets
503 (let* ((predefined-fret-table
504 (ly:context-property context 'predefinedDiagramTable))
505 (tunings (ly:context-property context 'stringTunings))
506 (string-count (length tunings))
507 (grob (if (null? rest) '() (car rest)))
508 (pitches (map (lambda (x) (ly:event-property x 'pitch)) notes))
509 (defined-strings (map (lambda (x)
512 (ly:event-property x 'string-number)))
513 (car specified-info)))
514 (defined-fingers (map (lambda (x)
517 (ly:event-property x 'digit)))
518 (cadr specified-info)))
519 (default-strings (ly:context-property context 'defaultStrings '()))
520 (strings-used (if (and (zero? (entry-count defined-strings))
521 (not (zero? (entry-count default-strings))))
524 (predefined-fretboard
525 (if predefined-fret-table
526 (get-predefined-fretboard
527 predefined-fret-table
531 (if (null? predefined-fretboard)
533 (determine-frets-and-strings
537 (ly:context-property context 'minimumFret 0)
538 (ly:context-property context 'maximumFretStretch 4)
543 context grob (string-frets->placement-list
544 (filter (lambda (entry)
549 (placement-list->string-frets predefined-fretboard)
550 (create-fretboard context grob predefined-fretboard)))))
554 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
557 ;; The TabNoteHead tablatureFormat callbacks.
559 ;; Calculate the fret from pitch and string number as letter
560 ;; The fret letter is taken from 'fretLabels if present
561 (define-public (fret-letter-tablature-format
562 context string-number fret-number)
563 (let ((labels (ly:context-property context 'fretLabels)))
566 ((= 0 (length labels))
567 (string (integer->char (+ fret-number (char->integer #\a)))))
568 ((and (<= 0 fret-number) (< fret-number (length labels)))
569 (list-ref labels fret-number))
571 (ly:warning (_ "No label for fret ~a (on string ~a);
572 only ~a fret labels provided")
573 fret-number string-number (length labels))
576 ;; Display the fret number as a number
577 (define-public (fret-number-tablature-format
578 context string-number fret-number)
580 (format #f "~a" fret-number)))
582 ;; The 5-string banjo has got a extra string, the fifth (duh), which
583 ;; starts at the fifth fret on the neck. Frets on the fifth string
584 ;; are referred to relative to the other frets:
585 ;; the "first fret" on the fifth string is really the sixth fret
586 ;; on the banjo neck.
587 ;; We solve this by defining a new fret-number-tablature function:
588 (define-public (fret-number-tablature-format-banjo
589 context string-number fret-number)
591 (number->string (cond
592 ((and (> fret-number 0) (= string-number 5))
594 (else fret-number)))))
596 ;; Tab note head staff position functions
598 ;; Define where in the staff to display a given string. Some forms of
599 ;; tablature put the tab note heads in the spaces, rather than on the
602 (define-public (tablature-position-on-lines context string-number)
603 (let* ((string-tunings (ly:context-property context 'stringTunings))
604 (string-count (length string-tunings))
605 (string-one-topmost (ly:context-property context 'stringOneTopmost))
606 (staff-line (- (* 2 string-number) string-count 1)))
607 (if string-one-topmost
611 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
614 (define-public ((every-nth-bar-number-visible n) barnum mp)
615 (= 0 (modulo barnum n)))
617 (define-public ((modulo-bar-number-visible n m) barnum mp)
618 (and (> barnum 1) (= m (modulo barnum n))))
620 (define-public ((set-bar-number-visibility n) tr)
621 (let ((bn (ly:context-property tr 'currentBarNumber)))
622 (ly:context-set-property! tr 'barNumberVisibility
623 (modulo-bar-number-visible n (modulo bn n)))))
625 (define-public (first-bar-number-invisible barnum mp)
628 (define-public (first-bar-number-invisible-save-broken-bars barnum mp)
630 (> (ly:moment-main-numerator mp) 0)))
632 (define-public (first-bar-number-invisible-and-no-parenthesized-bar-numbers barnum mp)
634 (= (ly:moment-main-numerator mp) 0)))
636 (define-public (robust-bar-number-function barnum measure-pos alt-number context)
637 (define (get-number-and-power an pow)
638 (if (<= an alt-number)
639 (get-number-and-power (+ an (expt 26 (1+ pow))) (1+ pow))
640 (cons (+ alt-number (- (expt 26 pow) an)) (1- pow))))
641 (define (make-letter so-far an pow)
644 (let ((pos (modulo (quotient an (expt 26 pow)) 26)))
645 (make-letter (string-append so-far
646 (substring "abcdefghijklmnopqrstuvwxyz"
651 (let* ((number-and-power (get-number-and-power 0 0))
652 (begin-measure (= 0 (ly:moment-main-numerator measure-pos)))
653 (maybe-open-parenthesis (if begin-measure "" "("))
654 (maybe-close-parenthesis (if begin-measure "" ")")))
655 (markup (string-append maybe-open-parenthesis
656 (number->string barnum)
658 (car number-and-power)
659 (cdr number-and-power))
660 maybe-close-parenthesis))))
662 (define-public (all-bar-numbers-visible barnum mp) #t)
665 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
666 ;; percent repeat counters
668 (define-public ((every-nth-repeat-count-visible n) count context)
669 (= 0 (modulo count n)))
671 (define-public (all-repeat-counts-visible count context) #t)
673 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
674 ;; make-engraver helper macro
676 (defmacro-public make-engraver forms
677 "Helper macro for creating Scheme engravers.
679 The usual form for an engraver is an association list (or alist)
680 mapping symbols to either anonymous functions or to another such
683 @code{make-engraver} accepts forms where the first element is either
684 an argument list starting with the respective symbol, followed by the
685 function body (comparable to the way @code{define} is used for
686 defining functions), or a single symbol followed by subordinate forms
687 in the same manner. You can also just make an alist pair
688 literally (the @samp{car} is quoted automatically) as long as the
689 unevaluated @samp{cdr} is not a pair. This is useful if you already
690 have defined your engraver functions separately.
692 Symbols mapping to a function would be @code{initialize},
693 @code{start-translation-timestep}, @code{process-music},
694 @code{process-acknowledged}, @code{stop-translation-timestep}, and
695 @code{finalize}. Symbols mapping to another alist specified in the
696 same manner are @code{listeners} with the subordinate symbols being
697 event classes, and @code{acknowledgers} and @code{end-acknowledgers}
698 with the subordinate symbols being interfaces."
699 (let loop ((forms forms))
700 (if (cheap-list? forms)
702 ,@(map (lambda (form)
703 (if (pair? (car form))
704 `(cons ',(caar form) (lambda ,(cdar form) ,@(cdr form)))
705 `(cons ',(car form) ,(loop (cdr form)))))