%%%% -*- Mode: Scheme -*- %%%% This file is part of LilyPond, the GNU music typesetter. %%%% %%%% Copyright (C) 2003--2015 Han-Wen Nienhuys %%%% Jan Nieuwenhuizen %%%% %%%% 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 . \version "2.19.25" %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% this file is alphabetically sorted. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% need SRFI-1 for filter; optargs for lambda* #(use-modules (srfi srfi-1) (ice-9 optargs)) absolute = #(define-music-function (music) (ly:music?) (_i "Make @var{music} absolute. This does not actually change the music itself but rather hides it from surrounding @code{\\relative} and @code{\\fixed} commands.") (make-music 'RelativeOctaveMusic 'element music)) acciaccatura = #(def-grace-function startAcciaccaturaMusic stopAcciaccaturaMusic (_i "Create an acciaccatura from the following music expression")) %% keep these two together instrument-definitions = #'() addInstrumentDefinition = #(define-void-function (name lst) (string? list?) (_i "Create instrument @var{name} with properties @var{list}.") (set! instrument-definitions (acons name lst instrument-definitions))) addQuote = #(define-void-function (name music) (string? ly:music?) (_i "Define @var{music} as a quotable music expression named @var{name}") (add-quotable name music)) %% keep these two together afterGraceFraction = 3/4 afterGrace = #(define-music-function (fraction main grace) ((fraction?) ly:music? ly:music?) (_i "Create @var{grace} note(s) after a @var{main} music expression. The musical position of the grace expression is after a given fraction of the main note's duration has passed. If @var{fraction} is not specified as first argument, it is taken from @code{afterGraceFraction} which has a default value of @code{3/4}.") (let ((main-length (ly:music-length main)) (fraction (or fraction (ly:parser-lookup 'afterGraceFraction)))) (make-simultaneous-music (list main (make-sequential-music (list (make-music 'SkipMusic 'duration (ly:make-duration 0 0 (* (ly:moment-main main-length) (/ (car fraction) (cdr fraction))))) (make-music 'GraceMusic 'element grace))))))) %% music identifiers not allowed at top-level, %% so this is a music-function instead. allowPageTurn = #(define-music-function () () (_i "Allow a page turn. May be used at toplevel (ie between scores or markups), or inside a score.") (make-music 'EventChord 'page-marker #t 'page-turn-permission 'allow 'elements (list (make-music 'PageTurnEvent 'break-permission 'allow)))) alterBroken = #(define-music-function (property arg item) (key-list-or-symbol? list? key-list-or-music?) (_i "Override @var{property} for pieces of broken spanner @var{item} with values @var{arg}. @var{item} may either be music in the form of a starting spanner event, or a symbol list in the form @samp{Context.Grob} or just @samp{Grob}. Iff @var{item} is in the form of a spanner event, @var{property} may also have the form @samp{Grob.property} for specifying a directed tweak.") (if (ly:music? item) (if (eq? (ly:music-property item 'span-direction) START) (tweak property (value-for-spanner-piece arg) item) (begin (ly:music-warning item (_ "not a spanner")) item)) (let* ((p (check-grob-path item (*location*) #:default 'Bottom #:min 2 #:max 2)) (name (and p (second p))) (description (and name (assoc-get name all-grob-descriptions)))) (if (and description (member 'spanner-interface (assoc-get 'interfaces (assoc-get 'meta description)))) (propertyOverride (append item (if (symbol? property) (list property) property)) (value-for-spanner-piece arg)) (begin (ly:input-warning (*location*) (_ "not a spanner name, `~a'") name) (make-music 'Music)))))) appendToTag = #(define-music-function (tag more music) (symbol? ly:music? ly:music?) (_i "Append @var{more} to the @code{elements} of all music expressions in @var{music} that are tagged with @var{tag}.") (music-map (lambda (m) (if (memq tag (ly:music-property m 'tags)) (set! (ly:music-property m 'elements) (append (ly:music-property m 'elements) (list more)))) m) music)) applyContext = #(define-music-function (proc) (procedure?) (_i "Modify context properties with Scheme procedure @var{proc}.") (make-music 'ApplyContext 'procedure proc)) applyMusic = #(define-music-function (func music) (procedure? ly:music?) (_i"Apply procedure @var{func} to @var{music}.") (func music)) applyOutput = #(define-music-function (target proc) (symbol-list-or-symbol? procedure?) (_i "Apply function @code{proc} to every layout object matched by @var{target} which takes the form @code{Context} or @code{Context.Grob}.") (let ((p (check-grob-path target (*location*) #:max 2))) (if p (make-music 'ApplyOutputEvent 'procedure proc 'context-type (car p) (if (pair? (cdr p)) (list (cons 'symbol (cadr p))) '())) (make-music 'Music)))) appoggiatura = #(def-grace-function startAppoggiaturaMusic stopAppoggiaturaMusic (_i "Create an appoggiatura from @var{music}")) % for regression testing purposes. assertBeamQuant = #(define-music-function (l r) (pair? pair?) (_i "Testing function: check whether the beam quants @var{l} and @var{r} are correct") (make-grob-property-override 'Beam 'positions (check-quant-callbacks l r))) % for regression testing purposes. assertBeamSlope = #(define-music-function (comp) (procedure?) (_i "Testing function: check whether the slope of the beam is the same as @code{comp}") (make-grob-property-override 'Beam 'positions (check-slope-callbacks comp))) autochange = #(define-music-function (pitch clef-1 clef-2 music) ((ly:pitch? (ly:make-pitch 0 0)) (ly:context-mod?)(ly:context-mod?) ly:music?) (_i "Make voices that switch between staves automatically. As an option the pitch where to switch staves may be specified. The clefs for the staves are optional as well. Setting clefs works only for implicitly instantiated staves.") (let ;; keep the contexts alive for the full duration ((skip (make-duration-of-length (ly:music-length music))) (clef-1 (or clef-1 #{ \with { \clef "treble" } #})) (clef-2 (or clef-2 #{ \with { \clef "bass" } #}))) (make-simultaneous-music (list (descend-to-context (make-autochange-music pitch music) 'Staff "up" clef-1) (context-spec-music (make-skip-music skip) 'Staff "up" clef-1) (context-spec-music (make-skip-music skip) 'Staff "down" clef-2))))) balloonGrobText = #(define-music-function (grob-name offset text) (symbol? number-pair? markup?) (_i "Attach @var{text} to @var{grob-name} at offset @var{offset} (use like @code{\\once})") (make-event-chord (list (make-music 'AnnotateOutputEvent 'symbol grob-name 'X-offset (car offset) 'Y-offset (cdr offset) 'text text)))) balloonText = #(define-event-function (offset text) (number-pair? markup?) (_i "Attach @var{text} at @var{offset} (use like @code{\\tweak})") (make-music 'AnnotateOutputEvent 'X-offset (car offset) 'Y-offset (cdr offset) 'text text)) bar = #(define-music-function (type) (string?) (_i "Insert a bar line of type @var{type}") (context-spec-music (make-property-set 'whichBar type) 'Timing)) barNumberCheck = #(define-music-function (n) (integer?) (_i "Print a warning if the current bar number is not @var{n}.") (make-music 'ApplyContext 'procedure (lambda (c) (let ((cbn (ly:context-property c 'currentBarNumber))) (if (and (number? cbn) (not (= cbn n))) (ly:input-warning (*location*) "Barcheck failed got ~a expect ~a" cbn n)))))) beamExceptions = #(define-scheme-function (music) (ly:music?) (_i "Extract a value suitable for setting @code{Timing.beamExceptions} from the given pattern with explicit beams in @var{music}. A bar check @code{|} has to be used between bars of patterns in order to reset the timing.") (extract-beam-exceptions music)) bendAfter = #(define-event-function (delta) (real?) (_i "Create a fall or doit of pitch interval @var{delta}.") (make-music 'BendAfterEvent 'delta-step delta)) bookOutputName = #(define-void-function (newfilename) (string?) (_i "Direct output for the current book block to @var{newfilename}.") (set! (paper-variable #f 'output-filename) newfilename)) bookOutputSuffix = #(define-void-function (newsuffix) (string?) (_i "Set the output filename suffix for the current book block to @var{newsuffix}.") (set! (paper-variable #f 'output-suffix) newsuffix)) %% \breathe is defined as a music function rather than an event identifier to %% ensure it gets useful input location information: as an event identifier, %% it would have to be wrapped in an EventChord to prevent it from being %% treated as a post_event by the parser breathe = #(define-music-function () () (_i "Insert a breath mark.") (make-music 'BreathingEvent)) clef = #(define-music-function (type) (string?) (_i "Set the current clef to @var{type}.") (make-clef-set type)) compoundMeter = #(define-music-function (args) (pair?) (_i "Create compound time signatures. The argument is a Scheme list of lists. Each list describes one fraction, with the last entry being the denominator, while the first entries describe the summands in the enumerator. If the time signature consists of just one fraction, the list can be given directly, i.e. not as a list containing a single list. For example, a time signature of (3+1)/8 + 2/4 would be created as @code{\\compoundMeter #'((3 1 8) (2 4))}, and a time signature of (3+2)/8 as @code{\\compoundMeter #'((3 2 8))} or shorter @code{\\compoundMeter #'(3 2 8)}.") (let* ((mlen (calculate-compound-measure-length args)) (beat (calculate-compound-base-beat args)) (beatGrouping (calculate-compound-beat-grouping args)) (timesig (cons (ly:moment-main-numerator mlen) (ly:moment-main-denominator mlen)))) #{ \once \override Timing.TimeSignature.stencil = #(lambda (grob) (grob-interpret-markup grob (make-compound-meter-markup args))) \set Timing.timeSignatureFraction = #timesig \set Timing.baseMoment = #beat \set Timing.beatStructure = #beatGrouping \set Timing.beamExceptions = #'() \set Timing.measureLength = #mlen #} )) compressMMRests = #(define-music-function (music) (ly:music?) (_i "Remove the empty bars created by multi-measure rests, leaving just the first bar containing the MM rest itself.") (music-map (lambda (m) (if (eq? 'MultiMeasureRestMusic (ly:music-property m 'name)) #{ \once \set Score.skipBars = ##t #m #} #{ #m #} )) music)) crossStaff = #(define-music-function (notes) (ly:music?) (_i "Create cross-staff stems") #{ \temporary \override Stem.cross-staff = #cross-staff-connect \temporary \override Flag.style = #'no-flag #notes \revert Stem.cross-staff \revert Flag.style #}) cueClef = #(define-music-function (type) (string?) (_i "Set the current cue clef to @var{type}.") (make-cue-clef-set type)) cueClefUnset = #(define-music-function () () (_i "Unset the current cue clef.") (make-cue-clef-unset)) cueDuring = #(define-music-function (what dir main-music) (string? ly:dir? ly:music?) (_i "Insert contents of quote @var{what} corresponding to @var{main-music}, in a CueVoice oriented by @var{dir}.") (make-music 'QuoteMusic 'element main-music 'quoted-context-type 'CueVoice 'quoted-context-id "cue" 'quoted-music-name what 'quoted-voice-direction dir)) cueDuringWithClef = #(define-music-function (what dir clef main-music) (string? ly:dir? string? ly:music?) (_i "Insert contents of quote @var{what} corresponding to @var{main-music}, in a CueVoice oriented by @var{dir}.") (make-music 'QuoteMusic 'element main-music 'quoted-context-type 'CueVoice 'quoted-context-id "cue" 'quoted-music-name what 'quoted-music-clef clef 'quoted-voice-direction dir)) displayLilyMusic = #(define-music-function (port music) ((output-port?) ly:music?) (_i "Display the LilyPond input representation of @var{music} to @var{port}, defaulting to the console.") (let ((port (or port (current-output-port)))) (newline port) (display-lily-music music port)) music) displayMusic = #(define-music-function (port music) ((output-port?) ly:music?) (_i "Display the internal representation of @var{music} to @var{port}, default to the console.") (let ((port (or port (current-output-port)))) (newline port) (display-scheme-music music port)) music) displayScheme = #(define-scheme-function (port expr) ((output-port?) scheme?) (_i "Display the internal representation of @var{expr} to @var{port}, default to the console.") (let ((port (or port (current-output-port)))) (newline port) (display-scheme-music expr port)) expr) endSpanners = #(define-music-function (music) (ly:music?) (_i "Terminate the next spanner prematurely after exactly one note without the need of a specific end spanner.") (let* ((start-span-evs (filter (lambda (ev) (equal? (ly:music-property ev 'span-direction) START)) (extract-typed-music music 'span-event))) (stop-span-evs (map (lambda (m) (music-clone m 'span-direction STOP)) start-span-evs)) (end-ev-chord (make-music 'EventChord 'elements stop-span-evs)) (total (make-music 'SequentialMusic 'elements (list music end-ev-chord)))) total)) eventChords = #(define-music-function (music) (ly:music?) (_i "Compatibility function wrapping @code{EventChord} around isolated rhythmic events occuring since version 2.15.28, after expanding repeat chords @samp{q}.") (event-chord-wrap! music)) featherDurations= #(define-music-function (factor argument) (ly:moment? ly:music?) (_i "Adjust durations of music in @var{argument} by rational @var{factor}.") (let ((orig-duration (ly:music-length argument)) (multiplier (ly:make-moment 1 1))) (for-each (lambda (mus) (if (< 0 (ly:moment-main-denominator (ly:music-length mus))) (begin (ly:music-compress mus multiplier) (set! multiplier (ly:moment-mul factor multiplier))))) (extract-named-music argument '(EventChord NoteEvent RestEvent SkipEvent))) (ly:music-compress argument (ly:moment-div orig-duration (ly:music-length argument))) argument)) finger = #(define-event-function (finger) (number-or-markup?) (_i "Apply @var{finger} as a fingering indication.") (make-music 'FingeringEvent (if (number? finger) 'digit 'text) finger)) fixed = #(define-music-function (pitch music) (ly:pitch? ly:music?) (_i "Use the octave of @var{pitch} as the default octave for @var{music}.") (let ((octave-marks (1+ (ly:pitch-octave pitch)))) (cond ((not (= 0 octave-marks)) (ly:music-transpose music (ly:make-pitch octave-marks 0 0)) ;;In order to leave unchanged the notes in any enclosed ;; \absolute or \fixed or \relative, make a cancelling shift (map (lambda (m) (ly:music-transpose m (ly:make-pitch (- octave-marks) 0 0))) (extract-named-music music 'RelativeOctaveMusic))))) (make-music 'RelativeOctaveMusic 'element music)) footnote = #(define-music-function (mark offset footnote item) ((markup?) number-pair? markup? symbol-list-or-music?) (_i "Make the markup @var{footnote} a footnote on @var{item}. The footnote is marked with a markup @var{mark} moved by @var{offset} with respect to the marked music. If @var{mark} is not given or specified as @var{\\default}, it is replaced by an automatically generated sequence number. If @var{item} is a symbol list of form @samp{Grob} or @samp{Context.Grob}, then grobs of that type will be marked at the current time step in the given context (default @code{Bottom}). If @var{item} is music, the music will get a footnote attached to a grob immediately attached to the event, like @var{\\tweak} does. For attaching a footnote to an @emph{indirectly} caused grob, write @code{\\single\\footnote}, use @var{item} to specify the grob, and follow it with the music to annotate. Like with @code{\\tweak}, if you use a footnote on a following post-event, the @code{\\footnote} command itself needs to be attached to the preceding note or rest as a post-event with @code{-}.") (let ((mus (make-music 'FootnoteEvent 'X-offset (car offset) 'Y-offset (cdr offset) 'automatically-numbered (not mark) 'text (or mark (make-null-markup)) 'footnote-text footnote))) (once (propertyTweak 'footnote-music mus item)))) grace = #(def-grace-function startGraceMusic stopGraceMusic (_i "Insert @var{music} as grace notes.")) grobdescriptions = #(define-scheme-function (descriptions) (list?) (_i "Create a context modification from @var{descriptions}, a list in the format of @code{all-grob-descriptions}.") (ly:make-context-mod (map (lambda (p) (list 'assign (car p) (ly:make-grob-properties (cdr p)))) descriptions))) harmonicByFret = #(define-music-function (fret music) (number? ly:music?) (_i "Convert @var{music} into mixed harmonics; the resulting notes resemble harmonics played on a fretted instrument by touching the strings at @var{fret}.") #{ \set harmonicDots = ##t \temporary \override TabNoteHead.stencil = #(tab-note-head::print-custom-fret-label (number->string fret)) \temporary \override NoteHead.Y-extent = #grob::always-Y-extent-from-stencil \temporary \override NoteHead.stencil = #(lambda (grob) (ly:grob-set-property! grob 'style 'harmonic-mixed) (ly:note-head::print grob)) #(make-harmonic (calc-harmonic-pitch (fret->pitch (number->string fret)) music)) \unset harmonicDots \revert TabNoteHead.stencil \revert NoteHead.Y-extent \revert NoteHead.stencil #}) harmonicByRatio = #(define-music-function (ratio music) (number? ly:music?) (_i "Convert @var{music} into mixed harmonics; the resulting notes resemble harmonics played on a fretted instrument by touching the strings at the point given through @var{ratio}.") #{ \set harmonicDots = ##t \temporary \override TabNoteHead.stencil = #(tab-note-head::print-custom-fret-label (ratio->fret ratio)) \temporary \override NoteHead.Y-extent = #(ly:make-unpure-pure-container ly:grob::stencil-height) \temporary \override NoteHead.stencil = #(lambda (grob) (ly:grob-set-property! grob 'style 'harmonic-mixed) (ly:note-head::print grob)) #(make-harmonic (calc-harmonic-pitch (ratio->pitch ratio) music)) \unset harmonicDots \revert TabNoteHead.stencil \revert NoteHead.Y-extent \revert NoteHead.stencil #}) hide = #(define-music-function (item) (symbol-list-or-music?) (_i "Set @var{item}'s @samp{transparent} property to @code{#t}, making it invisible while still retaining its dimensions. If @var{item} is a symbol list of form @code{GrobName} or @code{Context.GrobName}, the result is an override for the grob name specified by it. If @var{item} is a music expression, the result is the same music expression with an appropriate tweak applied to it.") (propertyTweak 'transparent #t item)) inStaffSegno = #(define-music-function () () (_i "Put the segno variant 'varsegno' at this position into the staff, compatible with the repeat command.") (make-music 'ApplyContext 'procedure (lambda (ctx) (let ((score-ctx (ly:context-find ctx 'Score))) (if (ly:context? score-ctx) (let ((old-rc (ly:context-property score-ctx 'repeatCommands '()))) (if (eq? (memq 'segno-display old-rc) #f) (ly:context-set-property! score-ctx 'repeatCommands (cons 'segno-display old-rc))))))))) instrumentSwitch = #(define-music-function (name) (string?) (_i "Switch instrument to @var{name}, which must be predefined with @code{\\addInstrumentDefinition}.") (let* ((handle (assoc name instrument-definitions)) (instrument-def (if handle (cdr handle) '()))) (if (not handle) (ly:input-warning (*location*) "No such instrument: ~a" name)) (context-spec-music (make-music 'SimultaneousMusic 'elements (map (lambda (kv) (make-property-set (car kv) (cdr kv))) instrument-def)) 'Staff))) keepWithTag = #(define-music-function (tags music) (symbol-list-or-symbol? ly:music?) (_i "Include only elements of @var{music} that are tagged with one of the tags in @var{tags}. @var{tags} may be either a single symbol or a list of symbols. Each tag may be declared as a member of at most one tag group (defined with @code{\\tagGroup}). If none of a @var{music} element's tags share a tag group with one of the specified @var{tags}, the element is retained.") (music-filter (tags-keep-predicate tags) music)) key = #(define-music-function (tonic pitch-alist) ((ly:pitch? '()) (list? '())) (_i "Set key to @var{tonic} and scale @var{pitch-alist}. If both are null, just generate @code{KeyChangeEvent}.") (cond ((null? tonic) (make-music 'KeyChangeEvent)) ((null? pitch-alist) (ly:parser-error (_ "second argument must be pitch list") (*location*)) (make-music 'SequentialMusic 'void #t)) (else (ly:music-transpose (make-music 'KeyChangeEvent 'tonic (ly:make-pitch 0 0 0) 'pitch-alist pitch-alist) tonic)))) killCues = #(define-music-function (music) (ly:music?) (_i "Remove cue notes from @var{music}.") (music-map (lambda (mus) (if (and (string? (ly:music-property mus 'quoted-music-name)) (string=? (ly:music-property mus 'quoted-context-id "") "cue")) (ly:music-property mus 'element) mus)) music)) label = #(define-music-function (label) (symbol?) (_i "Create @var{label} as a bookmarking label.") (make-music 'EventChord 'page-marker #t 'page-label label 'elements (list (make-music 'LabelEvent 'page-label label)))) language = #(define-void-function (language) (string?) (_i "Set note names for language @var{language}.") (note-names-language language)) languageSaveAndChange = #(define-void-function (language) (string?) (_i "Store the previous pitchnames alist, and set a new one.") (set! previous-pitchnames pitchnames) (note-names-language language)) languageRestore = #(define-void-function () () (_i "Restore a previously-saved pitchnames alist.") (if previous-pitchnames (begin (set! pitchnames previous-pitchnames) (ly:parser-set-note-names pitchnames)) (ly:input-warning (*location*) (_ "No other language was defined previously. Ignoring.")))) magnifyMusic = #(define-music-function (mag music) (positive? ly:music?) (_i "Magnify the notation of @var{music} without changing the staff-size, using @var{mag} as a size factor. Stems, beams, slurs, ties, and horizontal spacing are adjusted automatically.") ;; these props are NOT allowed to shrink below default size (define unshrinkable-props '( ;; stems (Stem thickness) ;; slurs (Slur line-thickness) (Slur thickness) (PhrasingSlur line-thickness) (PhrasingSlur thickness) ;; ties (Tie line-thickness) (Tie thickness) (LaissezVibrerTie line-thickness) (LaissezVibrerTie thickness) (RepeatTie line-thickness) (RepeatTie thickness) )) ;; these props ARE allowed to shrink below default size (define shrinkable-props (let ((baseline-skip-props (find-named-props 'baseline-skip all-grob-descriptions)) (word-space-props (find-named-props 'word-space all-grob-descriptions))) (append baseline-skip-props word-space-props '( ;; TODO: uncomment spacing-increment here once Issue 3987 is fixed ;; override at the 'Score level ;(SpacingSpanner spacing-increment) ;; lengths and heights (Beam length-fraction) (Stem length-fraction) (Stem beamlet-default-length) (Stem double-stem-separation) (Slur height-limit) (Slur minimum-length) (PhrasingSlur height-limit) (PhrasingSlur minimum-length) ;; Beam.beam-thickness is dealt with separately below )))) #{ \context Bottom { %% TODO: uncomment \newSpacingSection once Issue 3990 is fixed %\newSpacingSection #(scale-fontSize 'magnifyMusic mag) #(scale-props 'magnifyMusic mag #f unshrinkable-props) #(scale-props 'magnifyMusic mag #t shrinkable-props) #(scale-beam-thickness mag) #music %% TODO: uncomment \newSpacingSection once Issue 3990 is fixed %\newSpacingSection %% reverse engineer the former fontSize value instead of using \unset #(revert-fontSize 'magnifyMusic mag) #(revert-props 'magnifyMusic mag (append unshrinkable-props shrinkable-props '((Beam beam-thickness)))) } #}) magnifyStaff = #(define-music-function (mag) (positive?) (_i "Change the size of the staff, adjusting notation size and horizontal spacing automatically, using @var{mag} as a size factor.") ;; these props are NOT allowed to shrink below default size (define unshrinkable-props '((StaffSymbol thickness))) ;; these props ARE allowed to shrink below default size (define shrinkable-props (let* ((baseline-skip-props (find-named-props 'baseline-skip all-grob-descriptions)) (word-space-props (find-named-props 'word-space all-grob-descriptions)) (space-alist-props (find-named-props 'space-alist all-grob-descriptions))) (append baseline-skip-props word-space-props space-alist-props '( ;; override at the 'Score level (SpacingSpanner spacing-increment) (StaffSymbol staff-space) (BarLine kern) (BarLine segno-kern) (BarLine hair-thickness) (BarLine thick-thickness) (Stem beamlet-default-length) (Stem double-stem-separation) )))) #{ \stopStaff %% revert settings from last time %% (but only if \magnifyStaff has already been used %% and the staff magnification is changing) #(revert-fontSize 'magnifyStaff mag) #(revert-props 'magnifyStaff mag (append unshrinkable-props shrinkable-props)) %% scale settings %% (but only if staff magnification is changing %% and does not equal 1) #(scale-fontSize 'magnifyStaff mag) #(scale-props 'magnifyStaff mag #f unshrinkable-props) #(scale-props 'magnifyStaff mag #t shrinkable-props) %% this might cause problems until Issue 3990 is fixed \newSpacingSection \startStaff \set Staff.magnifyStaffValue = #mag #}) makeClusters = #(define-music-function (arg) (ly:music?) (_i "Display chords in @var{arg} as clusters.") (music-map note-to-cluster arg)) modalInversion = #(define-music-function (around to scale music) (ly:pitch? ly:pitch? ly:music? ly:music?) (_i "Invert @var{music} about @var{around} using @var{scale} and transpose from @var{around} to @var{to}.") (let ((inverter (make-modal-inverter around to scale))) (change-pitches music inverter) music)) modalTranspose = #(define-music-function (from to scale music) (ly:pitch? ly:pitch? ly:music? ly:music?) (_i "Transpose @var{music} from pitch @var{from} to pitch @var{to} using @var{scale}.") (let ((transposer (make-modal-transposer from to scale))) (change-pitches music transposer) music)) inversion = #(define-music-function (around to music) (ly:pitch? ly:pitch? ly:music?) (_i "Invert @var{music} about @var{around} and transpose from @var{around} to @var{to}.") (music-invert around to music)) mark = #(define-music-function (label) ((number-or-markup?)) "Make the music for the \\mark command." (let* ((set (and (integer? label) (context-spec-music (make-property-set 'rehearsalMark label) 'Score))) (ev (make-music 'MarkEvent 'origin (*location*)))) (if set (make-sequential-music (list set ev)) (begin (if label (set! (ly:music-property ev 'label) label)) ev)))) markupMap = #(define-music-function (path markupfun music) (symbol-list-or-symbol? markup-function? ly:music?) (_i "This applies the given markup function @var{markupfun} to all markup music properties matching @var{path} in @var{music}. For example, @example \\new Voice @{ g'2 c'' @} \\addlyrics @{ \\markupMap LyricEvent.text \\markup \\with-color #red \\etc @{ Oh yes! @} @} @end example ") (let* ((p (check-music-path path (*location*))) (name (and p (car p))) (prop (and p (cadr p)))) (if p (for-some-music (lambda (m) (if (or (not name) (eq? (ly:music-property m 'name) name)) (let ((text (ly:music-property m prop))) (if (markup? text) (set! (ly:music-property m prop) (list markupfun text))))) #f) music))) music) musicMap = #(define-music-function (proc mus) (procedure? ly:music?) (_i "Apply @var{proc} to @var{mus} and all of the music it contains.") (music-map proc mus)) %% noPageBreak and noPageTurn are music functions (not music indentifiers), %% because music identifiers are not allowed at top-level. noPageBreak = #(define-music-function () () (_i "Forbid a page break. May be used at toplevel (i.e., between scores or markups), or inside a score.") (make-music 'EventChord 'page-marker #t 'page-break-permission 'forbid 'elements (list (make-music 'PageBreakEvent 'break-permission '())))) noPageTurn = #(define-music-function () () (_i "Forbid a page turn. May be used at toplevel (i.e., between scores or markups), or inside a score.") (make-music 'EventChord 'page-marker #t 'page-turn-permission 'forbid 'elements (list (make-music 'PageTurnEvent 'break-permission '())))) octaveCheck = #(define-music-function (pitch) (ly:pitch?) (_i "Octave check.") (make-music 'RelativeOctaveCheck 'pitch pitch)) offset = #(define-music-function (property offsets item) (symbol-list-or-symbol? scheme? key-list-or-music?) (_i "Offset the default value of @var{property} of @var{item} by @var{offsets}. If @var{item} is a string, the result is @code{\\override} for the specified grob type. If @var{item} is a music expression, the result is the same music expression with an appropriate tweak applied.") (if (ly:music? item) ; In case of a tweak, grob property path is Grob.property (let ((prop-path (check-grob-path (if (symbol? property) (list property) property) (*location*) #:start 1 #:default #t #:min 2 #:max 2))) (if prop-path ; If the head of the grob property path is a symbol--i.e., ; a grob name, produce a directed tweak. Otherwise, create ; an ordinary tweak. (if (symbol? (car prop-path)) (tweak prop-path (offsetter (second prop-path) offsets) item) (tweak (second prop-path) (offsetter (second prop-path) offsets) item)) item)) ; In case of an override, grob property path is Context.Grob.property. (let ((prop-path (check-grob-path (append item (if (symbol? property) (list property) property)) (*location*) #:default 'Bottom #:min 3 #:max 3))) (if prop-path (propertyOverride prop-path (offsetter (third prop-path) offsets)) (make-music 'Music))))) omit = #(define-music-function (item) (symbol-list-or-music?) (_i "Set @var{item}'s @samp{stencil} property to @code{#f}, effectively omitting it without taking up space. If @var{item} is a symbol list of form @code{GrobName} or @code{Context.GrobName}, the result is an override for the grob name specified by it. If @var{item} is a music expression, the result is the same music expression with an appropriate tweak applied to it.") (propertyTweak 'stencil #f item)) once = #(define-music-function (music) (ly:music?) (_i "Set @code{once} to @code{#t} on all layout instruction events in @var{music}. This will complain about music with an actual duration. As a special exception, if @var{music} contains @samp{tweaks} it will be silently ignored in order to allow for @code{\\once \\propertyTweak} to work as both one-time override and proper tweak.") (if (not (pair? (ly:music-property music 'tweaks))) (for-some-music (lambda (m) (cond ((music-is-of-type? m 'layout-instruction-event) (set! (ly:music-property m 'once) #t) #t) ((ly:duration? (ly:music-property m 'duration)) (ly:music-warning m (_ "Cannot apply \\once to timed music")) #t) (else #f))) music)) music) ottava = #(define-music-function (octave) (integer?) (_i "Set the octavation.") (make-music 'OttavaMusic 'ottava-number octave)) overrideTimeSignatureSettings = #(define-music-function (time-signature base-moment beat-structure beam-exceptions) (fraction? fraction? list? list?) (_i "Override @code{timeSignatureSettings} for time signatures of @var{time-signature} to have settings of @var{base-moment}, @var{beat-structure}, and @var{beam-exceptions}.") ;; TODO -- add warning if largest value of grouping is ;; greater than time-signature. (let ((setting (make-setting base-moment beat-structure beam-exceptions))) (override-time-signature-setting time-signature setting))) overrideProperty = #(define-music-function (grob-property-path value) (key-list? scheme?) (_i "Set the grob property specified by @var{grob-property-path} to @var{value}. @var{grob-property-path} is a symbol list of the form @code{Context.GrobName.property} or @code{GrobName.property}, possibly with subproperties given as well. As opposed to @code{\\override} which overrides the context-dependent defaults with which a grob is created, this command uses @code{Output_property_engraver} at the grob acknowledge stage. This may be necessary for overriding values set after the initial grob creation.") (let ((p (check-grob-path grob-property-path (*location*) #:default 'Bottom #:min 3))) (if p (make-music 'ApplyOutputEvent 'context-type (first p) 'symbol (second p) 'procedure (lambda (grob orig-context context) (ly:grob-set-nested-property! grob (cddr p) value))) (make-music 'Music)))) %% pageBreak and pageTurn are music functions (iso music indentifiers), %% because music identifiers are not allowed at top-level. pageBreak = #(define-music-function () () (_i "Force a page break. May be used at toplevel (i.e., between scores or markups), or inside a score.") (make-music 'EventChord 'page-marker #t 'line-break-permission 'force 'page-break-permission 'force 'elements (list (make-music 'LineBreakEvent 'break-permission 'force) (make-music 'PageBreakEvent 'break-permission 'force)))) pageTurn = #(define-music-function () () (_i "Force a page turn between two scores or top-level markups.") (make-music 'EventChord 'page-marker #t 'line-break-permission 'force 'page-break-permission 'force 'page-turn-permission 'force 'elements (list (make-music 'LineBreakEvent 'break-permission 'force) (make-music 'PageBreakEvent 'break-permission 'force) (make-music 'PageTurnEvent 'break-permission 'force)))) parallelMusic = #(define-void-function (voice-ids music) (list? ly:music?) (_i "Define parallel music sequences, separated by '|' (bar check signs), and assign them to the identifiers provided in @var{voice-ids}. @var{voice-ids}: a list of music identifiers (symbols containing only letters) @var{music}: a music sequence, containing BarChecks as limiting expressions. Example: @verbatim \\parallelMusic #'(A B C) { c c | d d | e e | d d | e e | f f | } <==> A = { c c | d d } B = { d d | e e } C = { e e | f f } @end verbatim The last bar checks in a sequence are not copied to the result in order to facilitate ending the last entry at non-bar boundaries. ") (define voice-count (length voice-ids)) (define (bar-check? m) "Checks whether m is a bar check." (eq? (ly:music-property m 'name) 'BarCheck)) (define (recurse-and-split-list lst) "Return either a list of music lists split along barchecks, or @code{#f}." (if (any bar-check? lst) (let* ((voices (apply circular-list (make-list voice-count '()))) (current-voices voices) (current-sequence '())) ;; ;; utilities (define (push-music m) "Push the music expression into the current sequence" (set! current-sequence (cons m current-sequence))) (define (change-voice) "Store the previously built sequence into the current voice and change to the following voice." (set-car! current-voices (cons current-sequence (car current-voices))) (set! current-sequence '()) (set! current-voices (cdr current-voices))) (for-each (lambda (m) (let ((split? (recurse-and-split m))) (if split? (for-each (lambda (m) (push-music m) (change-voice)) split?) (begin (push-music m) (if (bar-check? m) (change-voice)))))) lst) (if (pair? current-sequence) (change-voice)) ;; Un-circularize voices (set! voices (list-head voices voice-count)) ;; Remove trailing bar checks to facilitate ending a ;; sequence on a non-bar, reverse partial sequences and sequences (set! voices (map! (lambda (l) (map! reverse! (reverse! (if (and (pair? l) (pair? (car l)) (bar-check? (caar l))) (cons (cdar l) (cdr l)) l)))) voices)) ;; check sequence length (apply for-each (lambda seqs (define (seq-len seq) (reduce ly:moment-add (ly:make-moment 0) (map ly:music-length seq))) (let ((moment-reference (seq-len (car seqs)))) (for-each (lambda (seq) (if (not (equal? (seq-len seq) moment-reference)) (ly:music-warning (if (pair? seq) (last seq) (caar seqs)) (_ "Bars in parallel music don't have the same length")))) seqs))) voices) (map concatenate! voices)) (let ((deeper (map recurse-and-split lst))) (and (any pair? deeper) (apply zip (map (lambda (m split) (or split (ly:music-deep-copy (make-list voice-count m)))) lst deeper)))))) (define (recurse-and-split music) "This returns either a list of music split along barchecks, or @code{#f}." (let* ((elt (ly:music-property music 'element)) (elts (ly:music-property music 'elements)) (split-elt (and (ly:music? elt) (recurse-and-split elt))) (split-elts (and (pair? elts) (recurse-and-split-list elts)))) (and (or split-elt split-elts) (map (lambda (e es) (let ((m (ly:music-deep-copy music ;;; reassigning the origin of the parent only ;;; makes sense if the first expression in the ;;; result is from a distributed origin (or (and (ly:music? e) e) (and (pair? es) (car es)))))) (if (ly:music? e) (set! (ly:music-property m 'element) e)) (if (pair? es) (set! (ly:music-property m 'elements) es)) m)) (or split-elt (circular-list #f)) (or split-elts (circular-list #f)))))) (let ((voices (recurse-and-split music))) (if voices ;; ;; bind voice identifiers to the voices (for-each (lambda (voice-id voice) (ly:parser-define! voice-id voice)) voice-ids voices) (ly:music-warning music (_ "ignoring parallel music without barchecks"))))) parenthesize = #(define-music-function (arg) (ly:music?) (_i "Tag @var{arg} to be parenthesized.") (if (memq 'event-chord (ly:music-property arg 'types)) ;; arg is an EventChord -> set the parenthesize property ;; on all child notes and rests (for-each (lambda (ev) (if (or (memq 'note-event (ly:music-property ev 'types)) (memq 'rest-event (ly:music-property ev 'types))) (set! (ly:music-property ev 'parenthesize) #t))) (ly:music-property arg 'elements)) ;; No chord, simply set property for this expression: (set! (ly:music-property arg 'parenthesize) #t)) arg) #(define (make-directed-part-combine-music direction chord-range part1 part2 one-context-settings two-context-settings shared-context-settings) (let* ((pc-music (make-music 'PartCombineMusic)) (m1 (context-spec-music (make-non-relative-music part1) 'Voice "one")) (m2 (context-spec-music (make-non-relative-music part2) 'Voice "two")) (listener (ly:parser-lookup 'partCombineListener)) (evs2 (recording-group-emulate m2 listener)) (evs1 (recording-group-emulate m1 listener)) (split-list (if (and (assoc "one" evs1) (assoc "two" evs2)) (determine-split-list (reverse! (assoc-get "one" evs1) '()) (reverse! (assoc-get "two" evs2) '()) chord-range) '())) (L1 (ly:music-length part1)) (L2 (ly:music-length part2)) ;; keep the contexts alive for the full duration (skip (make-skip-music (make-duration-of-length (if (ly:moment> #} )) partcombine = #(define-music-function (chord-range part1 part2) ((number-pair? '(0 . 8)) ly:music? ly:music?) (_i "Take the music in @var{part1} and @var{part2} and return a music expression containing simultaneous voices, where @var{part1} and @var{part2} are combined into one voice where appropriate. Optional @var{chord-range} sets the distance in steps between notes that may be combined into a chord or unison.") (make-directed-part-combine-music #f chord-range part1 part2 #{ \with { \voiceOne \override DynamicLineSpanner.direction = #UP } #} #{ \with { \voiceTwo \override DynamicLineSpanner.direction = #DOWN } #} #{ #} )) partcombineUp = #(define-music-function (chord-range part1 part2) ((number-pair? '(0 . 8)) ly:music? ly:music?) (_i "Take the music in @var{part1} and @var{part2} and typeset so that they share a staff with stems directed upward.") (make-directed-part-combine-music UP chord-range part1 part2 #{ \with { \voiceOne \override DynamicLineSpanner.direction = #UP } #} #{ \with { \voiceThree \override DynamicLineSpanner.direction = #UP } #} #{ \with { \voiceOne \override DynamicLineSpanner.direction = #UP } #} )) partcombineDown = #(define-music-function (chord-range part1 part2) ((number-pair? '(0 . 8)) ly:music? ly:music?) (_i "Take the music in @var{part1} and @var{part2} and typeset so that they share a staff with stems directed downward.") (make-directed-part-combine-music DOWN chord-range part1 part2 #{ \with { \voiceFour \override DynamicLineSpanner.direction = #DOWN } #} #{ \with { \voiceTwo \override DynamicLineSpanner.direction = #DOWN } #} #{ \with { \voiceTwo \override DynamicLineSpanner.direction = #DOWN } #} )) %% Part combine forcing to be found in ly/property-init.ly partial = #(define-music-function (dur) (ly:duration?) (_i "Make a partial measure.") ;; We use `descend-to-context' here instead of `context-spec-music' to ;; ensure \partial still works if the Timing_translator is moved (descend-to-context (context-spec-music (make-music 'PartialSet 'origin (*location*) 'duration dur) 'Timing) 'Score)) pitchedTrill = #(define-music-function (main-note secondary-note) (ly:music? ly:music?) (_i "Print a trill with @var{main-note} as the main note of the trill and print @var{secondary-note} as a stemless note head in parentheses.") (let* ((get-notes (lambda (ev-chord) (extract-named-music ev-chord 'NoteEvent))) (sec-note-events (get-notes secondary-note)) (trill-events (extract-named-music main-note 'TrillSpanEvent))) (if (pair? sec-note-events) (begin (let* ((trill-pitch (ly:music-property (car sec-note-events) 'pitch)) (forced (ly:music-property (car sec-note-events) 'force-accidental))) (if (ly:pitch? trill-pitch) (for-each (lambda (m) (ly:music-set-property! m 'pitch trill-pitch)) trill-events) (begin (ly:input-warning (*location*) (_ "Second argument of \\pitchedTrill should be single note: ")) (display sec-note-events))) (if (eq? forced #t) (for-each (lambda (m) (ly:music-set-property! m 'force-accidental forced)) trill-events))))) main-note)) propertyOverride = #(define-music-function (grob-property-path value) (key-list? scheme?) (_i "Set the grob property specified by @var{grob-property-path} to @var{value}. @var{grob-property-path} is a symbol list of the form @code{Context.GrobName.property} or @code{GrobName.property}, possibly with subproperties given as well. This music function is mostly intended for use from Scheme as a substitute for the built-in @code{\\override} command.") (let ((p (check-grob-path grob-property-path (*location*) #:default 'Bottom #:min 3))) (if p (context-spec-music (make-music 'OverrideProperty 'symbol (cadr p) 'origin (*location*) 'grob-value value 'grob-property-path (cddr p) 'pop-first #t) (car p)) (make-music 'Music)))) propertyRevert = #(define-music-function (grob-property-path) (key-list?) (_i "Revert the grob property specified by @var{grob-property-path} to its previous value. @var{grob-property-path} is a symbol list of the form @code{Context.GrobName.property} or @code{GrobName.property}, possibly with subproperties given as well. This music function is mostly intended for use from Scheme as a substitute for the built-in @code{\\revert} command.") (let ((p (check-grob-path grob-property-path (*location*) #:default 'Bottom #:min 3))) (if p (context-spec-music (make-music 'RevertProperty 'symbol (cadr p) 'origin (*location*) 'grob-property-path (cddr p)) (car p)) (make-music 'Music)))) propertySet = #(define-music-function (property-path value) (symbol-list-or-symbol? scheme?) (_i "Set the context property specified by @var{property-path} to @var{value}. This music function is mostly intended for use from Scheme as a substitute for the built-in @code{\\set} command.") (let ((p (check-context-path property-path (*location*)))) (if p (context-spec-music (make-music 'PropertySet 'symbol (cadr p) 'value value 'origin (*location*)) (car p)) (make-music 'Music)))) propertyTweak = #(define-music-function (prop value item) (key-list-or-symbol? scheme? key-list-or-music?) (_i "Add a tweak to the following @var{item}, usually music. This generally behaves like @code{\\tweak} but will turn into an @code{\\override} when @var{item} is a symbol list. In that case, @var{item} specifies the grob path to override. This is mainly useful when using @code{\\propertyTweak} as as a component for building other functions like @code{\\omit}. It is not the default behavior for @code{\\tweak} since many input strings in @code{\\lyricmode} can serve equally as music or as symbols which causes surprising behavior when tweaking lyrics using the less specific semantics of @code{\\propertyTweak}. @var{prop} can contain additional elements in which case a nested property (inside of an alist) is tweaked.") ;; Why not instead make the parser treat strings preferably as ;; music in lyrics mode rather than as symbol? Because then ;; ;; \tweak text "whatever" mylyrics ;; ;; will try putting a lyric event with text "whatever" in the text ;; property of lyrics. So we want expressions allowing both ;; strings and lyrics to deliver strings: more complex conversions ;; should only be attempted when the simple uses don't match the ;; given predicate. (if (ly:music? item) (if (music-is-of-type? item 'context-specification) ;; This is essentially dealing with the case ;; \propertyTweak color #red \propertyTweak font-size #3 NoteHead ;; namely when stacked tweaks end in a symbol list ;; rather than a music expression. ;; ;; We have a tweak here to convert into an override, ;; so we need to know the grob to apply it to. That's ;; easy if we have a directed tweak, and otherwise we ;; need to find the symbol in the expression itself. (let* ((p (check-grob-path prop (*location*) #:start 1 #:default #t #:min 2)) (elt (ly:music-property item 'element)) (seq (if (music-is-of-type? elt 'sequential-music) elt (make-sequential-music (list elt)))) (elts (ly:music-property seq 'elements)) (symbol (if (symbol? (car p)) (car p) (and (pair? elts) (ly:music-property (car elts) 'symbol))))) (if (symbol? symbol) (begin (set! (ly:music-property seq 'elements) (cons (make-music 'OverrideProperty 'symbol symbol 'grob-property-path (cdr p) 'pop-first #t 'grob-value value 'origin (*location*)) elts)) (set! (ly:music-property item 'element) seq)) (begin (ly:parser-error (_ "Cannot \\propertyTweak") (*location*)) (ly:music-message item (_ "untweakable")))) item) (tweak prop value item)) (propertyOverride (append item (if (symbol? prop) (list prop) prop)) value))) propertyUnset = #(define-music-function (property-path) (symbol-list-or-symbol?) (_i "Unset the context property specified by @var{property-path}. This music function is mostly intended for use from Scheme as a substitute for the built-in @code{\\unset} command.") (let ((p (check-context-path property-path (*location*)))) (if p (context-spec-music (make-music 'PropertyUnset 'symbol (cadr p) 'origin (*location*)) (car p)) (make-music 'Music)))) pushToTag = #(define-music-function (tag more music) (symbol? ly:music? ly:music?) (_i "Add @var{more} to the front of @code{elements} of all music expressions in @var{music} that are tagged with @var{tag}.") (music-map (lambda (m) (if (memq tag (ly:music-property m 'tags)) (set! (ly:music-property m 'elements) (cons more (ly:music-property m 'elements)))) m) music)) quoteDuring = #(define-music-function (what main-music) (string? ly:music?) (_i "Indicate a section of music to be quoted. @var{what} indicates the name of the quoted voice, as specified in an @code{\\addQuote} command. @var{main-music} is used to indicate the length of music to be quoted; usually contains spacers or multi-measure rests.") (make-music 'QuoteMusic 'element main-music 'quoted-music-name what)) relative = #(define-music-function (pitch music) ((ly:pitch?) ly:music?) (_i "Make @var{music} relative to @var{pitch}. If @var{pitch} is omitted, the first note in @var{music} is given in absolute pitch.") ;; When \relative has no clear decision (can only happen with ;; scales with an even number of steps), it goes down (see ;; pitch.cc). The following formula puts out f for both the normal ;; 7-step scale as well as for a "shortened" scale missing the ;; final b. In either case, a first note of c will end up as c, ;; namely pitch (-1, 0, 0). (ly:make-music-relative! music (or pitch (ly:make-pitch -1 (quotient ;; size of current scale: (ly:pitch-steps (ly:make-pitch 1 0)) 2)))) (make-music 'RelativeOctaveMusic 'element music)) removeWithTag = #(define-music-function (tags music) (symbol-list-or-symbol? ly:music?) (_i "Remove elements of @var{music} that are tagged with one of the tags in @var{tags}. @var{tags} may be either a single symbol or a list of symbols.") (music-filter (tags-remove-predicate tags) music)) resetRelativeOctave = #(define-music-function (pitch) (ly:pitch?) (_i "Set the octave inside a \\relative section.") (make-music 'SequentialMusic 'to-relative-callback (lambda (music last-pitch) pitch))) retrograde = #(define-music-function (music) (ly:music?) (_i "Return @var{music} in reverse order.") (retrograde-music music)) revertTimeSignatureSettings = #(define-music-function (time-signature) (pair?) (_i "Revert @code{timeSignatureSettings} for time signatures of @var{time-signature}.") (revert-time-signature-setting time-signature)) rightHandFinger = #(define-event-function (finger) (number-or-markup?) (_i "Apply @var{finger} as a fingering indication.") (make-music 'StrokeFingerEvent (if (number? finger) 'digit 'text) finger)) scaleDurations = #(define-music-function (fraction music) (fraction? ly:music?) (_i "Multiply the duration of events in @var{music} by @var{fraction}.") (ly:music-compress music (ly:make-moment (car fraction) (cdr fraction)))) settingsFrom = #(define-scheme-function (ctx music) ((symbol?) ly:music?) (_i "Take the layout instruction events from @var{music}, optionally restricted to those applying to context type @var{ctx}, and return a context modification duplicating their effect.") (let ((mods (ly:make-context-mod))) (define (musicop m) (if (music-is-of-type? m 'layout-instruction-event) (ly:add-context-mod mods (case (ly:music-property m 'name) ((PropertySet) (list 'assign (ly:music-property m 'symbol) (ly:music-property m 'value))) ((PropertyUnset) (list 'unset (ly:music-property m 'symbol))) ((OverrideProperty) (cons* 'push (ly:music-property m 'symbol) (ly:music-property m 'grob-value) (cond ((ly:music-property m 'grob-property #f) => list) (else (ly:music-property m 'grob-property-path))))) ((RevertProperty) (cons* 'pop (ly:music-property m 'symbol) (cond ((ly:music-property m 'grob-property #f) => list) (else (ly:music-property m 'grob-property-path))))))) (case (ly:music-property m 'name) ((ApplyContext) (ly:add-context-mod mods (list 'apply (ly:music-property m 'procedure)))) ((ContextSpeccedMusic) (if (or (not ctx) (eq? ctx (ly:music-property m 'context-type))) (musicop (ly:music-property m 'element)))) (else (let ((callback (ly:music-property m 'elements-callback))) (if (procedure? callback) (for-each musicop (callback m)))))))) (musicop music) mods)) shape = #(define-music-function (offsets item) (list? key-list-or-music?) (_i "Offset control-points of @var{item} by @var{offsets}. The argument is a list of number pairs or list of such lists. Each element of a pair represents an offset to one of the coordinates of a control-point. If @var{item} is a string, the result is @code{\\once\\override} for the specified grob type. If @var{item} is a music expression, the result is the same music expression with an appropriate tweak applied.") (define (shape-curve grob coords) (let* ((orig (ly:grob-original grob)) (siblings (if (ly:spanner? grob) (ly:spanner-broken-into orig) '())) (total-found (length siblings))) (define (offset-control-points offsets) (if (null? offsets) coords (map (lambda (x y) (coord-translate x y)) coords offsets))) (define (helper sibs offs) (if (pair? offs) (if (eq? (car sibs) grob) (offset-control-points (car offs)) (helper (cdr sibs) (cdr offs))) coords)) ;; we work with lists of lists (if (or (null? offsets) (not (list? (car offsets)))) (set! offsets (list offsets))) (if (>= total-found 2) (helper siblings offsets) (offset-control-points (car offsets))))) (once (propertyTweak 'control-points (grob-transformer 'control-points shape-curve) item))) shiftDurations = #(define-music-function (dur dots arg) (integer? integer? ly:music?) (_i "Change the duration of @var{arg} by adding @var{dur} to the @code{durlog} of @var{arg} and @var{dots} to the @code{dots} of @var{arg}.") (shift-duration-log arg dur dots)) single = #(define-music-function (overrides music) (ly:music? ly:music?) (_i "Convert @var{overrides} to tweaks and apply them to @var{music}. This does not convert @code{\\revert}, @code{\\set} or @code{\\unset}.") (set! (ly:music-property music 'tweaks) (fold-some-music (lambda (m) (eq? (ly:music-property m 'name) 'OverrideProperty)) (lambda (m tweaks) (let ((p (cond ((ly:music-property m 'grob-property #f) => list) (else (ly:music-property m 'grob-property-path))))) (acons (cons (ly:music-property m 'symbol) ;grob name (if (pair? (cdr p)) p ;grob property path (car p))) ;grob property (ly:music-property m 'grob-value) tweaks))) (ly:music-property music 'tweaks) overrides)) music) skip = #(define-music-function (dur) (ly:duration?) (_i "Skip forward by @var{dur}.") (make-music 'SkipMusic 'duration dur)) slashedGrace = #(def-grace-function startSlashedGraceMusic stopSlashedGraceMusic (_i "Create slashed graces (slashes through stems, but no slur) from the following music expression")) spacingTweaks = #(define-music-function (parameters) (list?) (_i "Set the system stretch, by reading the 'system-stretch property of the `parameters' assoc list.") (overrideProperty '(Score NonMusicalPaperColumn line-break-system-details) (list (cons 'alignment-extra-space (cdr (assoc 'system-stretch parameters))) (cons 'system-Y-extent (cdr (assoc 'system-Y-extent parameters)))))) styledNoteHeads = #(define-music-function (style heads music) (symbol? symbol-list-or-symbol? ly:music?) (_i "Set @var{heads} in @var{music} to @var{style}.") (style-note-heads heads style music)) tag = #(define-music-function (tags music) (symbol-list-or-symbol? ly:music?) (_i "Tag the following @var{music} with @var{tags} and return the result, by adding the single symbol or symbol list @var{tags} to the @code{tags} property of @var{music}.") (set! (ly:music-property music 'tags) ((if (symbol? tags) cons append) tags (ly:music-property music 'tags))) music) tagGroup = #(define-void-function (tags) (symbol-list?) (_i "Define a tag group comprising the symbols in the symbol list @var{tags}. Tag groups must not overlap.") (let ((err (define-tag-group tags))) (if err (ly:parser-error err (*location*))))) temporary = #(define-music-function (music) (ly:music?) (_i "Make any @code{\\override} in @var{music} replace an existing grob property value only temporarily, restoring the old value when a corresponding @code{\\revert} is executed. This is achieved by clearing the @samp{pop-first} property normally set on @code{\\override}s. An @code{\\override}/@/@code{\\revert} sequence created by using @code{\\temporary} and @code{\\undo} on the same music containing overrides will cancel out perfectly or cause a@tie{}warning. Non-property-related music is ignored, warnings are generated for any property-changing music that isn't an @code{\\override}.") (define warned #f) (for-some-music (lambda (m) (and (or (music-is-of-type? m 'layout-instruction-event) (music-is-of-type? m 'context-specification) (music-is-of-type? m 'apply-context) (music-is-of-type? m 'time-signature-music)) (case (ly:music-property m 'name) ((OverrideProperty) (if (ly:music-property m 'pop-first #f) (set! (ly:music-property m 'pop-first) '())) (if (ly:music-property m 'once #f) (set! (ly:music-property m 'once) '())) #t) ((ContextSpeccedMusic) #f) (else (if (not warned) (begin (ly:input-warning (*location*) (_ "Cannot make ~a revertible") (ly:music-property m 'name)) (set! warned #t))) #t)))) music) music) time = #(define-music-function (beat-structure fraction) ((number-list? '()) fraction?) (_i "Set @var{fraction} as time signature, with optional number list @var{beat-structure} before it.") (make-music 'TimeSignatureMusic 'numerator (car fraction) 'denominator (cdr fraction) 'beat-structure beat-structure)) times = #(define-music-function (fraction music) (fraction? ly:music?) (_i "Scale @var{music} in time by @var{fraction}.") (make-music 'TimeScaledMusic 'element (ly:music-compress music (ly:make-moment (car fraction) (cdr fraction))) 'numerator (car fraction) 'denominator (cdr fraction))) transpose = #(define-music-function (from to music) (ly:pitch? ly:pitch? ly:music?) (_i "Transpose @var{music} from pitch @var{from} to pitch @var{to}.") (make-music 'TransposedMusic 'element (ly:music-transpose music (ly:pitch-diff to from)))) transposedCueDuring = #(define-music-function (what dir pitch main-music) (string? ly:dir? ly:pitch? ly:music?) (_i "Insert notes from the part @var{what} into a voice called @code{cue}, using the transposition defined by @var{pitch}. This happens simultaneously with @var{main-music}, which is usually a rest. The argument @var{dir} determines whether the cue notes should be notated as a first or second voice.") (make-music 'QuoteMusic 'element main-music 'quoted-context-type 'CueVoice 'quoted-context-id "cue" 'quoted-music-name what 'quoted-voice-direction dir ;; following is inverse of instrumentTransposition for ;; historical reasons 'quoted-transposition pitch)) transposition = #(define-music-function (pitch) (ly:pitch?) (_i "Set instrument transposition") (context-spec-music (make-property-set 'instrumentTransposition pitch) 'Staff)) tuplet = #(define-music-function (ratio tuplet-span music) (fraction? (ly:duration? '()) ly:music?) (_i "Scale the given @var{music} to tuplets. @var{ratio} is a fraction that specifies how many notes are played in place of the nominal value: it will be @samp{3/2} for triplets, namely three notes being played in place of two. If the optional duration @var{tuplet-span} is specified, it is used instead of @code{tupletSpannerDuration} for grouping the tuplets. For example, @example \\tuplet 3/2 4 @{ c8 c c c c c @} @end example will result in two groups of three tuplets, each group lasting for a quarter note.") (make-music 'TimeScaledMusic 'element (ly:music-compress music (ly:make-moment (cdr ratio) (car ratio))) 'numerator (cdr ratio) 'denominator (car ratio) 'duration tuplet-span)) tupletSpan = #(define-music-function (tuplet-span) ((ly:duration?)) (_i "Set @code{tupletSpannerDuration}, the length into which @code{\\tuplet} without an explicit @samp{tuplet-span} argument of its own will group its tuplets, to the duration @var{tuplet-span}. To revert to the default of not subdividing the contents of a @code{\\tuplet} command without explicit @samp{tuplet-span}, use @example \\tupletSpan \\default @end example ") (if tuplet-span #{ \set tupletSpannerDuration = #(ly:duration-length tuplet-span) #} #{ \unset tupletSpannerDuration #})) tweak = #(define-music-function (prop value music) (key-list-or-symbol? scheme? ly:music?) (_i "Add a tweak to the following @var{music}. Layout objects created by @var{music} get their property @var{prop} set to @var{value}. If @var{prop} has the form @samp{Grob.property}, like with @example \\tweak Accidental.color #red cis' @end example an indirectly created grob (@samp{Accidental} is caused by @samp{NoteHead}) can be tweaked; otherwise only directly created grobs are affected. @var{prop} can contain additional elements in which case a nested property (inside of an alist) is tweaked.") (let ((p (check-grob-path prop (*location*) #:start 1 #:default #t #:min 2))) (cond ((not p)) ;; p now contains at least two elements. The first ;; element is #t when no grob has been explicitly ;; specified, otherwise it is a grob name. (else (set! (ly:music-property music 'tweaks) (acons (cond ((pair? (cddr p)) p) ((symbol? (car p)) (cons (car p) (cadr p))) (else (cadr p))) value (ly:music-property music 'tweaks))))) music)) undo = #(define-music-function (music) (ly:music?) (_i "Convert @code{\\override} and @code{\\set} in @var{music} to @code{\\revert} and @code{\\unset}, respectively. Any reverts and unsets already in @var{music} cause a warning. Non-property-related music is ignored.") (define warned #f) (let loop ((music music)) (let ((lst (fold-some-music (music-type-predicate '(layout-instruction-event context-specification apply-context time-signature-music)) (lambda (m overrides) (case (ly:music-property m 'name) ((OverrideProperty) (cons (make-music 'RevertProperty 'symbol (ly:music-property m 'symbol) 'grob-property-path (cond ((ly:music-property m 'grob-property #f) => list) (else (ly:music-property m 'grob-property-path)))) overrides)) ((PropertySet) (cons (make-music 'PropertyUnset 'symbol (ly:music-property m 'symbol)) overrides)) ((ContextSpeccedMusic) (cons (make-music 'ContextSpeccedMusic 'element (loop (ly:music-property m 'element)) 'context-type (ly:music-property m 'context-type)) overrides)) (else (if (not warned) (begin (ly:input-warning (*location*) (_ "Cannot revert ~a") (ly:music-property m 'name)) (set! warned #t))) overrides))) '() music))) (cond ((null? lst) (make-music 'Music)) ((null? (cdr lst)) (car lst)) (else (make-sequential-music lst)))))) unfoldRepeats = #(define-music-function (music) (ly:music?) (_i "Force any @code{\\repeat volta}, @code{\\repeat tremolo} or @code{\\repeat percent} commands in @var{music} to be interpreted as @code{\\repeat unfold}.") (unfold-repeats music)) void = #(define-void-function (arg) (scheme?) (_i "Accept a scheme argument, return a void expression. Use this if you want to have a scheme expression evaluated because of its side-effects, but its value ignored.")) withMusicProperty = #(define-music-function (sym val music) (symbol? scheme? ly:music?) (_i "Set @var{sym} to @var{val} in @var{music}.") (set! (ly:music-property music sym) val) music)