1 ;;;; music-functions.scm --
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
8 ;; (use-modules (ice-9 optargs))
10 ;;; ly:music-property with setter
11 ;;; (ly:music-property my-music 'elements)
12 ;;; ==> the 'elements property
13 ;;; (set! (ly:music-property my-music 'elements) value)
14 ;;; ==> set the 'elements property and return it
15 (define-public ly:music-property
16 (make-procedure-with-setter ly:music-property
17 ly:music-set-property!))
19 (define-safe-public (music-is-of-type? mus type)
20 "Does @code{mus} belong to the music class @code{type}?"
21 (memq type (ly:music-property mus 'types)))
24 (define-public ly:grob-property
25 (make-procedure-with-setter ly:grob-property
26 ly:grob-set-property!))
28 (define-public ly:prob-property
29 (make-procedure-with-setter ly:prob-property
30 ly:prob-set-property!))
32 (define-public (music-map function music)
33 "Apply @var{function} to @var{music} and all of the music it contains.
35 First it recurses over the children, then the function is applied to MUSIC.
37 (let ((es (ly:music-property music 'elements))
38 (e (ly:music-property music 'element)))
39 (set! (ly:music-property music 'elements)
40 (map (lambda (y) (music-map function y)) es))
42 (set! (ly:music-property music 'element)
43 (music-map function e)))
46 (define-public (music-filter pred? music)
47 "Filter out music expressions that do not satisfy PRED."
49 (define (inner-music-filter pred? music)
51 (let* ((es (ly:music-property music 'elements))
52 (e (ly:music-property music 'element))
53 (as (ly:music-property music 'articulations))
54 (filtered-as (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) as)))
55 (filtered-e (if (ly:music? e)
56 (inner-music-filter pred? e)
58 (filtered-es (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) es))))
59 (set! (ly:music-property music 'element) filtered-e)
60 (set! (ly:music-property music 'elements) filtered-es)
61 (set! (ly:music-property music 'articulations) filtered-as)
62 ;; if filtering emptied the expression, we remove it completely.
63 (if (or (not (pred? music))
64 (and (eq? filtered-es '()) (not (ly:music? e))
65 (or (not (eq? es '()))
70 (set! music (inner-music-filter pred? music))
73 (make-music 'Music))) ;must return music.
75 (define-public (display-music music)
76 "Display music, not done with music-map for clarity of presentation."
79 (let ((es (ly:music-property music 'elements))
80 (e (ly:music-property music 'element)))
81 (display (ly:music-mutable-properties music))
83 (begin (display "\nElements: {\n")
84 (map display-music es)
94 ;;; A scheme music pretty printer
96 (define (markup-expression->make-markup markup-expression)
97 "Transform `markup-expression' into an equivalent, hopefuly readable, scheme expression.
99 \\markup \\bold \\italic hello
101 (markup #:line (#:bold (#:italic (#:simple \"hello\"))))"
102 (define (proc->command-keyword proc)
103 "Return a keyword, eg. `#:bold', from the `proc' function, eg. #<procedure bold-markup (layout props arg)>"
104 (let ((cmd-markup (symbol->string (procedure-name proc))))
105 (symbol->keyword (string->symbol (substring cmd-markup 0 (- (string-length cmd-markup)
106 (string-length "-markup")))))))
107 (define (transform-arg arg)
108 (cond ((and (pair? arg) (markup? (car arg))) ;; a markup list
109 (apply append (map inner-markup->make-markup arg)))
110 ((and (not (string? arg)) (markup? arg)) ;; a markup
111 (inner-markup->make-markup arg))
114 (define (inner-markup->make-markup mrkup)
115 (let ((cmd (proc->command-keyword (car mrkup)))
116 (args (map transform-arg (cdr mrkup))))
119 (if (string? markup-expression)
121 `(markup ,@(inner-markup->make-markup markup-expression))))
123 (define-public (music->make-music obj)
124 "Generate a expression that, once evaluated, may return an object equivalent to `obj',
125 that is, for a music expression, a (make-music ...) form."
126 (cond (;; markup expression
128 (markup-expression->make-markup obj))
132 ',(ly:music-property obj 'name)
133 ,@(apply append (map (lambda (prop)
135 ,(music->make-music (cdr prop))))
136 (remove (lambda (prop)
137 (eqv? (car prop) 'origin))
138 (ly:music-mutable-properties obj))))))
141 `(ly:make-moment ,(ly:moment-main-numerator obj)
142 ,(ly:moment-main-denominator obj)
143 ,(ly:moment-grace-numerator obj)
144 ,(ly:moment-grace-denominator obj)))
147 `(ly:make-duration ,(ly:duration-log obj)
148 ,(ly:duration-dot-count obj)
149 ,(car (ly:duration-factor obj))
150 ,(cdr (ly:duration-factor obj))))
153 `(ly:make-pitch ,(ly:pitch-octave obj)
154 ,(ly:pitch-notename obj)
155 ,(ly:pitch-alteration obj)))
158 (or (procedure-name obj) obj))
159 (;; a symbol (avoid having an unquoted symbol)
162 (;; an empty list (avoid having an unquoted empty list)
167 `(list ,@(map music->make-music obj)))
170 `(cons ,(music->make-music (car obj))
171 ,(music->make-music (cdr obj))))
175 (use-modules (ice-9 pretty-print))
176 (define*-public (display-scheme-music obj #:optional (port (current-output-port)))
177 "Displays `obj', typically a music expression, in a friendly fashion,
178 which often can be read back in order to generate an equivalent expression.
182 (pretty-print (music->make-music obj) port)
186 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
188 (define-public (shift-one-duration-log music shift dot)
189 " add SHIFT to duration-log of 'duration in music and optionally
190 a dot to any note encountered. This scales the music up by a factor
191 2^shift * (2 - (1/2)^dot)"
192 (let ((d (ly:music-property music 'duration)))
194 (let* ((cp (ly:duration-factor d))
195 (nd (ly:make-duration (+ shift (ly:duration-log d))
196 (+ dot (ly:duration-dot-count d))
199 (set! (ly:music-property music 'duration) nd)))
202 (define-public (shift-duration-log music shift dot)
203 (music-map (lambda (x) (shift-one-duration-log x shift dot))
206 (define-public (make-repeat name times main alts)
207 "create a repeat music expression, with all properties initialized properly"
208 (let ((talts (if (< times (length alts))
210 (ly:warning (_ "More alternatives than repeats. Junking excess alternatives"))
213 (r (make-repeated-music name)))
214 (set! (ly:music-property r 'element) main)
215 (set! (ly:music-property r 'repeat-count) (max times 1))
216 (set! (ly:music-property r 'elements) talts)
217 (if (equal? name "tremolo")
218 (let* ((dot? (zero? (modulo times 3)))
221 (quotient (* times 2) 3)
223 (shift (- (ly:intlog2 mult))))
225 (if (memq 'sequential-music (ly:music-property main 'types))
226 ;; \repeat "tremolo" { c4 d4 }
227 (let ((children (length (ly:music-property main 'elements))))
228 (if (not (= children 2))
229 (ly:warning (_ "expecting 2 elements for chord tremolo, found ~a") children))
230 (ly:music-compress r (ly:make-moment 1 children))
231 (shift-duration-log r (1- shift) dots))
232 ;; \repeat "tremolo" c4
233 (shift-duration-log r shift dots)))
236 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
239 (define-public (note-to-cluster music)
240 "Replace NoteEvents by ClusterNoteEvents."
241 (if (eq? (ly:music-property music 'name) 'NoteEvent)
242 (make-music 'ClusterNoteEvent
243 'pitch (ly:music-property music 'pitch)
244 'duration (ly:music-property music 'duration))
247 (define-public (notes-to-clusters music)
248 (music-map note-to-cluster music))
250 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
253 (define-public (unfold-repeats music)
255 This function replaces all repeats with unfold repeats. "
257 (let ((es (ly:music-property music 'elements))
258 (e (ly:music-property music 'element))
260 (if (memq 'repeated-music (ly:music-property music 'types))
262 ((props (ly:music-mutable-properties music))
263 (old-name (ly:music-property music 'name))
264 (flattened (flatten-alist props)))
266 (set! music (apply make-music (cons 'UnfoldedRepeatedMusic
269 (if (equal? old-name 'TremoloRepeatedMusic)
270 (let* ((seq-arg? (memq 'sequential-music
271 (ly:music-property e 'types)))
272 (count (ly:music-property music 'repeat-count))
273 (dot-shift (if (= 0 (remainder count 3))
277 (set! count (* 2 (quotient count 3))))
279 (shift-duration-log music (+ (if seq-arg? 1 0)
280 (ly:intlog2 count)) dot-shift)
283 (ly:music-compress e (ly:make-moment (length (ly:music-property
284 e 'elements)) 1)))))))
288 (set! (ly:music-property music 'elements)
289 (map unfold-repeats es)))
291 (set! (ly:music-property music 'element)
295 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
296 ;; property setting music objs.
298 (define-public (make-grob-property-set grob gprop val)
299 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
300 i.e. this is not an override"
301 (make-music 'OverrideProperty
307 (define-public (make-grob-property-override grob gprop val)
308 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
309 i.e. this is not an override"
310 (make-music 'OverrideProperty
315 (define-public (make-grob-property-revert grob gprop)
316 "Revert the grob property GPROP for GROB."
317 (make-music 'RevertProperty
319 'grob-property gprop))
321 (define direction-polyphonic-grobs
322 '(Stem Tie Rest Slur PhrasingSlur Script TextScript Dots DotColumn Fingering))
324 (define-safe-public (make-voice-props-set n)
325 (make-sequential-music
327 (map (lambda (x) (make-grob-property-set x 'direction
329 direction-polyphonic-grobs)
331 (make-grob-property-set 'NoteColumn 'horizontal-shift (quotient n 2))
332 (make-grob-property-set 'MultiMeasureRest 'staff-position (if (odd? n) -4 4))))))
334 (define-safe-public (make-voice-props-revert)
335 (make-sequential-music
337 (map (lambda (x) (make-grob-property-revert x 'direction))
338 direction-polyphonic-grobs)
339 (list (make-grob-property-revert 'NoteColumn 'horizontal-shift))
340 (list (make-grob-property-revert 'MultiMeasureRest 'staff-position)))))
343 (define-safe-public (context-spec-music m context #:optional id)
344 "Add \\context CONTEXT = ID to M. "
345 (let ((cm (make-music 'ContextSpeccedMusic
347 'context-type context)))
349 (set! (ly:music-property cm 'context-id) id))
352 (define-public (descend-to-context m context)
353 "Like context-spec-music, but only descending. "
354 (let ((cm (context-spec-music m context)))
355 (ly:music-set-property! cm 'descend-only #t)
358 (define-public (make-non-relative-music mus)
359 (make-music 'UnrelativableMusic
362 (define-public (make-apply-context func)
363 (make-music 'ApplyContext
366 (define-public (make-sequential-music elts)
367 (make-music 'SequentialMusic
370 (define-public (make-simultaneous-music elts)
371 (make-music 'SimultaneousMusic
374 (define-safe-public (make-event-chord elts)
375 (make-music 'EventChord
378 (define-public (make-skip-music dur)
379 (make-music 'SkipMusic
382 (define-public (make-grace-music music)
383 (make-music 'GraceMusic
389 (define-public (make-multi-measure-rest duration location)
390 (make-music 'MultiMeasureRestMusic
394 (define-public (make-property-set sym val)
395 (make-music 'PropertySet
399 (define-public (make-property-unset sym)
400 (make-music 'PropertyUnset
403 (define-public (make-ottava-set octavation)
404 (let ((m (make-music 'ApplyContext)))
405 (define (ottava-modify context)
406 "Either reset middleCPosition to the stored original, or remember
407 old middleCPosition, add OCTAVATION to middleCPosition, and set
408 OTTAVATION to `8va', or whatever appropriate."
409 (if (number? (ly:context-property context 'middleCPosition))
411 (let ((where (ly:context-property-where-defined context 'middleCPosition))
412 (oc0 (ly:context-property context 'originalCentralCPosition)))
413 (ly:context-set-property! context 'middleCPosition oc0)
414 (ly:context-unset-property where 'originalCentralCPosition)
415 (ly:context-unset-property where 'ottavation))
416 (let* ((where (ly:context-property-where-defined context 'middleCPosition))
417 (c0 (ly:context-property context 'middleCPosition))
418 (new-c0 (+ c0 (* -7 octavation)))
419 (string (cdr (assoc octavation '((2 . "15ma")
423 (-2 . "15ma bassa"))))))
424 (ly:context-set-property! context 'middleCPosition new-c0)
425 (ly:context-set-property! context 'originalCentralCPosition c0)
426 (ly:context-set-property! context 'ottavation string)))))
427 (set! (ly:music-property m 'procedure) ottava-modify)
428 (context-spec-music m 'Staff)))
430 (define-public (set-octavation ottavation)
431 (ly:export (make-ottava-set ottavation)))
433 (define-public (make-time-signature-set num den . rest)
434 "Set properties for time signature NUM/DEN. Rest can contain a list
437 (define (standard-beat-grouping num den)
439 "Some standard subdivisions for time signatures."
441 ((key (cons num den))
442 (entry (assoc key '(((6 . 8) . (3 3))
445 ((12 . 8) . (3 3 3 3))
453 (let* ((set1 (make-property-set 'timeSignatureFraction (cons num den)))
454 (beat (ly:make-moment 1 den))
455 (len (ly:make-moment num den))
456 (set2 (make-property-set 'beatLength beat))
457 (set3 (make-property-set 'measureLength len))
458 (set4 (make-property-set 'beatGrouping (if (pair? rest)
460 (standard-beat-grouping num den))))
461 (basic (list set1 set2 set3 set4)))
463 (context-spec-music (make-sequential-music basic) 'Timing) 'Score)))
465 (define-public (make-mark-set label)
466 "Make the music for the \\mark command."
467 (let* ((set (if (integer? label)
468 (context-spec-music (make-property-set 'rehearsalMark label)
471 (ev (make-music 'MarkEvent))
472 (ch (make-event-chord (list ev))))
474 (make-sequential-music (list set ch))
476 (set! (ly:music-property ev 'label) label)
479 (define-public (set-time-signature num den . rest)
480 (ly:export (apply make-time-signature-set `(,num ,den . ,rest))))
482 (define-safe-public (make-articulation name)
483 (make-music 'ArticulationEvent
484 'articulation-type name))
486 (define-public (make-lyric-event string duration)
487 (make-music 'LyricEvent
491 (define-safe-public (make-span-event type spandir)
493 'span-direction spandir))
495 (define-public (set-mus-properties! m alist)
496 "Set all of ALIST as properties of M."
499 (set! (ly:music-property m (caar alist)) (cdar alist))
500 (set-mus-properties! m (cdr alist)))))
502 (define-public (music-separator? m)
504 (let ((ts (ly:music-property m 'types)))
505 (memq 'separator ts)))
507 ;;; splitting chords into voices.
508 (define (voicify-list lst number)
509 "Make a list of Musics.
511 voicify-list :: [ [Music ] ] -> number -> [Music]
512 LST is a list music-lists.
514 NUMBER is 0-base, i.e. Voice=1 (upstems) has number 0.
518 (cons (context-spec-music
519 (make-sequential-music
520 (list (make-voice-props-set number)
521 (make-simultaneous-music (car lst))))
522 'Voice (number->string (1+ number)))
523 (voicify-list (cdr lst) (1+ number)))))
525 (define (voicify-chord ch)
526 "Split the parts of a chord into different Voices using separator"
527 (let ((es (ly:music-property ch 'elements)))
528 (set! (ly:music-property ch 'elements)
529 (voicify-list (split-list es music-separator?) 0))
532 (define-public (voicify-music m)
533 "Recursively split chords that are separated with \\ "
534 (if (not (ly:music? m))
535 (ly:error (_ "music expected: ~S") m))
536 (let ((es (ly:music-property m 'elements))
537 (e (ly:music-property m 'element)))
540 (set! (ly:music-property m 'elements) (map voicify-music es)))
542 (set! (ly:music-property m 'element) (voicify-music e)))
543 (if (and (equal? (ly:music-property m 'name) 'SimultaneousMusic)
544 (reduce (lambda (x y ) (or x y)) #f (map music-separator? es)))
545 (set! m (context-spec-music (voicify-chord m) 'Staff)))
548 (define-public (empty-music)
549 (ly:export (make-music 'Music)))
552 ; Make a function that checks score element for being of a specific type.
553 (define-public (make-type-checker symbol)
556 ;;(eq? #t (ly:grob-property elt symbol))
557 (not (eq? #f (memq symbol (ly:grob-property elt 'interfaces))))))
559 (define-public ((outputproperty-compatibility func sym val) grob g-context ao-context)
561 (set! (ly:grob-property grob sym) val)))
564 (define-public ((set-output-property grob-name symbol val) grob grob-c context)
567 \\applyoutput #(set-output-property 'Clef 'extra-offset '(0 . 1))
570 (let ((meta (ly:grob-property grob 'meta)))
571 (if (equal? (cdr (assoc 'name meta)) grob-name)
572 (set! (ly:grob-property grob symbol) val))))
576 (define-public (smart-bar-check n)
577 "Make a bar check that checks for a specific bar number.
579 (let ((m (make-music 'ApplyContext)))
581 (let* ((bn (ly:context-property tr 'currentBarNumber)))
585 ;; FIXME: uncomprehensable message
586 (_ "Bar check failed. Expect to be at ~a, instead at ~a")
588 (set! (ly:music-property m 'procedure) checker)
592 (define-public (skip->rest mus)
594 "Replace MUS by RestEvent of the same duration if it is a
595 SkipEvent. Useful for extracting parts from crowded scores"
597 (if (equal? (ly:music-property mus 'name) 'SkipEvent)
598 (make-music 'RestEvent 'duration (ly:music-property mus 'duration))
602 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
603 ;; warn for bare chords at start.
605 (define (has-request-chord elts)
606 (reduce (lambda (x y) (or x y)) #f
608 (equal? (ly:music-property x 'name) 'RequestChord))
611 (define-public (ly:music-message music msg)
612 (let ((ip (ly:music-property music 'origin)))
613 (if (ly:input-location? ip)
614 (ly:input-message ip msg)
617 (define (check-start-chords music)
618 "Check music expression for a Simultaneous_music containing notes\n(ie. Request_chords),
619 without context specification. Called from parser."
620 (let ((es (ly:music-property music 'elements))
621 (e (ly:music-property music 'element))
622 (name (ly:music-property music 'name)))
623 (cond ((equal? name "Context_specced_music") #t)
624 ((equal? name "Simultaneous_music")
625 (if (has-request-chord es)
626 (ly:music-message music "Starting score with a chord.\nInsert an explicit \\context before chord")
627 (map check-start-chords es)))
628 ((equal? name "SequentialMusic")
630 (check-start-chords (car es))))
631 (else (if (ly:music? e) (check-start-chords e)))))
636 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
638 ;; setting stuff for grace context.
641 (define (vector-extend v x)
642 "Make a new vector consisting of V, with X added to the end."
643 (let* ((n (vector-length v))
644 (nv (make-vector (+ n 1) '())))
645 (vector-move-left! v 0 n nv 0)
649 (define (vector-map f v)
650 "Map F over V. This function returns nothing."
651 (do ((n (vector-length v))
654 (f (vector-ref v i))))
656 (define (vector-reverse-map f v)
657 "Map F over V, N to 0 order. This function returns nothing."
658 (do ((i (- (vector-length v) 1) (- i 1)))
660 (f (vector-ref v i))))
662 ;; TODO: make a remove-grace-property too.
663 (define-public (add-grace-property context-name grob sym val)
664 "Set SYM=VAL for GROB in CONTEXT-NAME. "
665 (define (set-prop context)
666 (let* ((where (ly:context-property-where-defined context 'graceSettings))
667 (current (ly:context-property where 'graceSettings))
668 (new-settings (append current
669 (list (list context-name grob sym val)))))
670 (ly:context-set-property! where 'graceSettings new-settings)))
671 (ly:export (context-spec-music (make-apply-context set-prop) 'Voice)))
675 (defmacro-public def-grace-function (start stop)
676 `(define-music-function (parser location music) (ly:music?)
677 (make-music 'GraceMusic
679 'element (make-music 'SequentialMusic
680 'elements (list (ly:music-deep-copy ,start)
682 (ly:music-deep-copy ,stop))))))
684 (defmacro-public define-music-function (args signature . body)
685 "Helper macro for `ly:make-music-function'.
687 (define-music-function (parser location arg1 arg2 ...) (arg1-type? arg2-type? ...)
690 `(ly:make-music-function (list ,@signature)
695 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
697 (define-public (cue-substitute quote-music)
698 "Must happen after quote-substitute."
700 (if (vector? (ly:music-property quote-music 'quoted-events))
701 (let* ((dir (ly:music-property quote-music 'quoted-voice-direction))
702 (main-voice (if (eq? 1 dir) 1 0))
703 (cue-voice (if (eq? 1 dir) 0 1))
704 (main-music (ly:music-property quote-music 'element))
705 (return-value quote-music))
707 (if (or (eq? 1 dir) (eq? -1 dir))
709 ;; if we have stem dirs, change both quoted and main music
710 ;; to have opposite stems.
714 ;; cannot context-spec Quote-music, since context
715 ;; for the quotes is determined in the iterator.
716 (make-sequential-music
718 (context-spec-music (make-voice-props-set cue-voice) 'CueVoice "cue")
720 (context-spec-music (make-voice-props-revert) 'CueVoice "cue"))))
722 (make-sequential-music
724 (make-voice-props-set main-voice)
726 (make-voice-props-revert))))
727 (set! (ly:music-property quote-music 'element) main-music)))
732 (define-public ((quote-substitute quote-tab) music)
733 (let* ((quoted-name (ly:music-property music 'quoted-music-name))
734 (quoted-vector (if (string? quoted-name)
735 (hash-ref quote-tab quoted-name #f)
739 (if (string? quoted-name)
740 (if (vector? quoted-vector)
742 (set! (ly:music-property music 'quoted-events) quoted-vector)
743 (set! (ly:music-property music 'iterator-ctor)
744 ly:quote-iterator::constructor))
745 (ly:warning (_ "can't find quoted music `~S'" quoted-name))))
749 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
750 ;; switch it on here, so parsing and init isn't checked (too slow!)
752 ;; automatic music transformations.
754 (define (switch-on-debugging m)
755 (if (defined? 'set-debug-cell-accesses!)
756 (set-debug-cell-accesses! 15000))
759 (define (music-check-error music)
762 (if (and (ly:music? m)
763 (eq? (ly:music-property m 'error-found) #t))
766 (for-each signal (ly:music-property music 'elements))
767 (signal (ly:music-property music 'element))
770 (set! (ly:music-property music 'error-found) #t))
773 (define (precompute-music-length music)
774 (set! (ly:music-property music 'length)
775 (ly:music-length music))
778 (define (skip-to-last music parser)
782 << { \\set skipTypesetting = ##t
783 LENGTHOF(\\showLastLength)
784 \\set skipTypesetting = ##t }
790 ((show-last (ly:parser-lookup parser 'showLastLength)))
792 (if (ly:music? show-last)
794 ((orig-length (ly:music-length music))
795 (skip-length (ly:moment-sub orig-length (ly:music-length show-last))))
797 (make-simultaneous-music
799 (make-sequential-music
801 (context-spec-music (make-property-set 'skipTypesetting #t) 'Score)
802 (make-music 'SkipMusic 'duration
803 (ly:make-duration 0 0
804 (ly:moment-main-numerator skip-length)
805 (ly:moment-main-denominator skip-length)))
806 (context-spec-music (make-property-set 'skipTypesetting #f) 'Score)))
811 (define-public toplevel-music-functions
813 (lambda (music parser) (voicify-music music))
814 (lambda (x parser) (music-map music-check-error x))
815 (lambda (x parser) (music-map precompute-music-length x))
816 (lambda (music parser)
818 (music-map (quote-substitute (ly:parser-lookup parser 'musicQuotes)) music))
820 ;; switch-on-debugging
821 (lambda (x parser) (music-map cue-substitute x))
824 (skip-to-last x parser)
831 (define (apply-durations lyric-music durations)
832 (define (apply-duration music)
833 (if (and (not (equal? (ly:music-length music) ZERO-MOMENT))
834 (ly:duration? (ly:music-property music 'duration)))
836 (set! (ly:music-property music 'duration) (car durations))
837 (set! durations (cdr durations)))))
839 (music-map apply-duration lyric-music))
842 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
845 (define-public ((add-balloon-text object-name text off) grob orig-context cur-context)
846 "Usage: see input/regression/balloon.ly "
847 (let* ((meta (ly:grob-property grob 'meta))
848 (cb (ly:grob-property-data grob 'stencil))
849 (nm (if (pair? meta) (cdr (assoc 'name meta)) "nonexistant")))
850 (if (and (equal? nm object-name)
853 (ly:grob-set-property! grob 'stencil ly:balloon-interface::print)
854 (set! (ly:grob-property grob 'original-stencil) cb)
855 (set! (ly:grob-property grob 'balloon-text) text)
856 (set! (ly:grob-property grob 'balloon-text-offset) off)
857 (set! (ly:grob-property grob 'balloon-text-props) '((font-family . roman)))))))
859 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
862 (define-public (set-accidentals-properties extra-natural
866 (make-sequential-music
867 (append (if (boolean? extra-natural)
868 (list (make-property-set 'extraNatural extra-natural))
870 (list (make-property-set 'autoAccidentals auto-accs)
871 (make-property-set 'autoCautionaries auto-cauts))))
874 (define-public (set-accidental-style style . rest)
875 "Set accidental style to STYLE. Optionally takes a context argument,
876 e.g. 'Staff or 'Voice. The context defaults to Voice, except for piano styles, which
877 use GrandStaff as a context. "
878 (let ((context (if (pair? rest)
880 (pcontext (if (pair? rest)
881 (car rest) 'GrandStaff)))
884 ;; accidentals as they were common in the 18th century.
885 ((equal? style 'default)
886 (set-accidentals-properties #t '(Staff (same-octave . 0))
888 ;; accidentals from one voice do NOT get cancelled in other voices
889 ((equal? style 'voice)
890 (set-accidentals-properties #t '(Voice (same-octave . 0))
892 ;; accidentals as suggested by Kurt Stone, Music Notation in the 20th century.
893 ;; This includes all the default accidentals, but accidentals also needs cancelling
894 ;; in other octaves and in the next measure.
895 ((equal? style 'modern)
896 (set-accidentals-properties #f '(Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
898 ;; the accidentals that Stone adds to the old standard as cautionaries
899 ((equal? style 'modern-cautionary)
900 (set-accidentals-properties #f '(Staff (same-octave . 0))
901 '(Staff (any-octave . 0) (same-octave . 1))
903 ;; Multivoice accidentals to be read both by musicians playing one voice
904 ;; and musicians playing all voices.
905 ;; Accidentals are typeset for each voice, but they ARE cancelled across voices.
906 ((equal? style 'modern-voice)
907 (set-accidentals-properties #f
908 '(Voice (same-octave . 0) (any-octave . 0) (same-octave . 1)
909 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
912 ;; same as modernVoiceAccidental eccept that all special accidentals are typeset
914 ((equal? style 'modern-voice-cautionary)
915 (set-accidentals-properties #f
916 '(Voice (same-octave . 0))
917 '(Voice (any-octave . 0) (same-octave . 1)
918 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
920 ;; stone's suggestions for accidentals on grand staff.
921 ;; Accidentals are cancelled across the staves in the same grand staff as well
922 ((equal? style 'piano)
923 (set-accidentals-properties #f
924 '(Staff (same-octave . 0)
925 (any-octave . 0) (same-octave . 1)
926 GrandStaff (any-octave . 0) (same-octave . 1))
929 ((equal? style 'piano-cautionary)
930 (set-accidentals-properties #f
931 '(Staff (same-octave . 0))
932 '(Staff (any-octave . 0) (same-octave . 1)
933 GrandStaff (any-octave . 0) (same-octave . 1))
935 ;; do not set localKeySignature when a note alterated differently from
936 ;; localKeySignature is found.
937 ;; Causes accidentals to be printed at every note instead of
938 ;; remembered for the duration of a measure.
939 ;; accidentals not being remembered, causing accidentals always to be typeset relative to the time signature
940 ((equal? style 'forget)
941 (set-accidentals-properties '()
942 '(Staff (same-octave . -1))
944 ;; Do not reset the key at the start of a measure. Accidentals will be
945 ;; printed only once and are in effect until overridden, possibly many
947 ((equal? style 'no-reset)
948 (set-accidentals-properties '()
949 '(Staff (same-octave . #t))
953 (ly:warning (_ "unknown accidental style: ~S" style))
954 (make-sequential-music '()))))))
956 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
958 (define-public (skip-of-length mus)
959 "Create a skip of exactly the same length as MUS."
963 'duration (ly:make-duration 0 0))))
965 (make-event-chord (list (ly:music-compress skip (ly:music-length mus))))))
967 (define-public (mmrest-of-length mus)
968 "Create a mmrest of exactly the same length as MUS."
971 (make-multi-measure-rest
972 (ly:make-duration 0 0) '())))
973 (ly:music-compress skip (ly:music-length mus))
976 (define-public (pitch-of-note event-chord)
979 ((evs (filter (lambda (x) (memq 'note-event (ly:music-property x 'types)))
980 (ly:music-property event-chord 'elements))))
983 (ly:music-property (car evs) 'pitch)