1 ;;;; This file is part of LilyPond, the GNU music typesetter.
3 ;;;; Copyright (C) 1998--2011 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/>.
19 (define (define-grob-property symbol type? description)
20 (if (not (equal? (object-property symbol 'backend-doc) #f))
21 (ly:error (_ "symbol ~S redefined") symbol))
23 (set-object-property! symbol 'backend-type? type?)
24 (set-object-property! symbol 'backend-doc description)
27 ;; put this in an alist?
28 (define-public all-user-grob-properties
31 (apply define-grob-property x))
37 (add-stem-support ,boolean? "If set, the @code{Stem} object is
38 included in this script's support.")
39 (after-line-breaking ,boolean? "Dummy property, used to trigger
40 callback for @code{after-line-breaking}.")
41 (align-dir ,ly:dir? "Which side to align? @code{-1}: left side,
42 @code{0}: around center of width, @code{1}: right side.")
43 (allow-loose-spacing ,boolean? "If set, column can be detached
45 (allow-span-bar ,boolean? "If false, no inter-staff bar line will
46 be created below this bar line.")
47 (alteration ,number? "Alteration numbers for accidental.")
48 (alteration-alist ,list? "List of @code{(@var{pitch}
49 . @var{accidental})} pairs for key signature.")
50 (annotation ,string? "Annotate a grob for debug purposes.")
51 (annotation-balloon ,boolean? "Print the balloon around an annotation.")
52 (annotation-line ,boolean? "Print the line from an annotation to the
53 grob that it annotates.")
54 (arpeggio-direction ,ly:dir? "If set, put an arrow on the
55 arpeggio squiggly line.")
56 (arrow-length ,number? "Arrow length.")
57 (arrow-width ,number? "Arrow width.")
58 (auto-knee-gap ,ly:dimension? "If a gap is found between note
59 heads where a horizontal beam fits that is larger than this number,
61 (average-spacing-wishes ,boolean? "If set, the spacing wishes are
62 averaged over staves.")
63 (avoid-note-head ,boolean? "If set, the stem of a chord does not
64 pass through all note heads, but starts at the last note head.")
65 (avoid-slur ,symbol? "Method of handling slur collisions.
66 Choices are @code{inside}, @code{outside}, @code{around}, and
67 @code{ignore}. @code{inside} adjusts the slur if needed to keep the
68 grob inside the slur. @code{outside} moves the grob vertically to the
69 outside of the slur. @code{around} moves the grob vertically to the
70 outside of the slur only if there is a collision. @code{ignore} does
71 not move either. In grobs whose notational significance depends on
72 vertical position (such as accidentals, clefs, etc.), @code{outside}
73 and @code{around} behave like @code{ignore}.")
74 (axes ,list? "List of axis numbers. In the case of alignment
75 grobs, this should contain only one number.")
81 (base-shortest-duration ,ly:moment? "Spacing is based on the
82 shortest notes in a piece. Normally, pieces are spaced as if notes at
83 least as short as this are present.")
84 (baseline-skip ,ly:dimension? "Distance between base lines of
85 multiple lines of text.")
86 (beam-thickness ,ly:dimension? "Beam thickness, measured in
87 @code{staff-space} units.")
88 (beam-width ,ly:dimension? "Width of the tremolo sign.")
89 (beamed-stem-shorten ,list? "How much to shorten beamed stems,
90 when their direction is forced. It is a list, since the value is
91 different depending on the number of flags and beams.")
92 (beaming ,pair? "Pair of number lists. Each number list
93 specifies which beams to make. @code{0}@tie{}is the central beam,
94 @code{1}@tie{}is the next beam toward the note, etc. This information
95 is used to determine how to connect the beaming patterns from stem to
97 (beamlet-default-length ,pair? "A pair of numbers. The first
98 number specifies the default length of a beamlet that sticks out of
99 the left hand side of this stem; the second number specifies the
100 default length of the beamlet to the right. The actual length of a
101 beamlet is determined by taking either the default length or the
102 length specified by @code{beamlet-max-length-proportion}, whichever is
104 (beamlet-max-length-proportion ,pair? "The maximum length of a
105 beamlet, as a proportion of the distance between two adjacent stems.")
106 (before-line-breaking ,boolean? "Dummy property, used to trigger
107 a callback function.")
108 (between-cols ,pair? "Where to attach a loose column to.")
109 (bound-details ,list? "An alist of properties for determining
110 attachments of spanners to edges.")
111 (bound-padding ,number? "The amount of padding to insert around
113 (bracket-flare ,number-pair? "A pair of numbers specifying how
114 much edges of brackets should slant outward. Value @code{0.0} means
116 (bracket-visibility ,boolean-or-symbol? "This controls the
117 visibility of the tuplet bracket. Setting it to false prevents
118 printing of the bracket. Setting the property to @code{if-no-beam}
119 makes it print only if there is no beam associated with this tuplet
121 (break-align-anchor ,number? "Grobs aligned to this break-align
122 grob will have their X-offsets shifted by this number. In bar lines,
123 for example, this is used to position grobs relative to the (visual)
124 center of the bar line.")
125 (break-align-anchor-alignment ,number? "Read by
126 @code{ly:break-aligned-interface::calc-extent-aligned-anchor} for
127 aligning an anchor to a grob's extent.")
128 (break-align-orders ,vector? "Defines the order in which
129 prefatory matter (clefs, key signatures) appears. The format is a
130 vector of length@tie{}3, where each element is one order for
131 end-of-line, middle of line, and start-of-line, respectively. An
132 order is a list of symbols.
134 For example, clefs are put after key signatures by setting
137 \\override Score.BreakAlignment #'break-align-orders =
138 #(make-vector 3 '(span-bar
145 (break-align-symbol ,symbol? "This key is used for aligning and
146 spacing breakable items.")
147 (break-align-symbols ,list? "A list of symbols that determine
148 which break-aligned grobs to align this to. If the grob selected by
149 the first symbol in the list is invisible due to break-visibility, we
150 will align to the next grob (and so on). Choices are @code{left-edge},
151 @code{ambitus}, @code{breathing-sign}, @code{clef}, @code{staff-bar},
152 @code{key-cancellation}, @code{key-signature}, @code{time-signature},
154 (break-overshoot ,number-pair? "How much does a broken spanner
155 stick out of its bounds?")
156 (break-visibility ,vector? "A vector of 3@tie{}booleans,
157 @code{#(@var{end-of-line} @var{unbroken} @var{begin-of-line})}.
158 @code{#t} means visible, @code{#f} means killed.")
159 (breakable ,boolean? "Allow breaks here.")
165 (c0-position ,integer? "An integer indicating the position of
167 (circled-tip ,boolean? "Put a circle at start/end of
168 hairpins (al/del niente).")
169 (clip-edges ,boolean? "Allow outward pointing beamlets at the
171 (collapse-height ,ly:dimension? "Minimum height of system start
172 delimiter. If equal or smaller, the bracket/brace/line is removed.")
173 (collision-interfaces ,list? "A list of interfaces for which
174 automatic beam-collision resolution is run.")
175 (color ,color? "The color of this grob.")
176 (common-shortest-duration ,ly:moment? "The most common shortest
177 note length. This is used in spacing. Enlarging this sets the score
179 (concaveness ,number? "A beam is concave if its inner stems are
180 closer to the beam than the two outside stems. This number is a
181 measure of the closeness of the inner stems. It is used for damping
182 the slope of the beam.")
183 (connect-to-neighbor ,pair? "Pair of booleans, indicating whether
184 this grob looks as a continued break.")
185 (control-points ,list? "List of offsets (number pairs) that form
186 control points for the tie, slur, or bracket shape. For B@'eziers,
187 this should list the control points of a third-order B@'ezier curve.")
192 (damping ,number? "Amount of beam slope damping.")
193 (dash-definition ,pair? "List of @code{dash-elements} defining the
194 dash structure. Each @code{dash-element} has a starting t value,
195 an ending t-value, a @code{dash-fraction}, and a @code{dash-period}.")
196 (dash-fraction ,number? "Size of the dashes, relative to
197 @code{dash-period}. Should be between @code{0.0} (no line) and
198 @code{1.0} (continuous line).")
199 (dash-period ,number? "The length of one dash together with
200 whitespace. If negative, no line is drawn at all.")
201 (default-direction ,ly:dir? "Direction determined by note head
203 (default-staff-staff-spacing ,list? "The settings to use for
204 @code{staff-staff-spacing} when it is unset, for ungrouped staves
205 and for grouped staves that do not have the relevant
206 @code{StaffGrouper} property set (@code{staff-staff-spacing} or
207 @code{staffgroup-staff-spacing}).")
208 (details ,list? "Alist of parameters for detailed grob behavior.
209 More information on the allowed parameters for a grob can be found by
210 looking at the top of the Internals Reference page for each interface
211 having a @code{details} property.")
212 (digit-names ,vector? "Names for string finger digits.")
213 (direction ,ly:dir? "If @code{side-axis} is @code{0} (or
214 @code{#X}), then this property determines whether the object is placed
215 @code{#LEFT}, @code{#CENTER} or @code{#RIGHT} with respect to the
216 other object. Otherwise, it determines whether the object is placed
217 @code{#UP}, @code{#CENTER} or @code{#DOWN}. Numerical values may also
218 be used: @code{#UP}=@code{1}, @code{#DOWN}=@code{-1},
219 @code{#LEFT}=@code{-1}, @code{#RIGHT}=@code{1},
220 @code{#CENTER}=@code{0}.")
221 (dot-count ,integer? "The number of dots.")
222 (dot-negative-kern ,number? "The space to remove between a dot
223 and a slash in percent repeat glyphs. Larger values bring the two
224 elements closer together.")
225 (dot-placement-list ,list? "List consisting of
226 @code{(@var{description} @var{string-number} @var{fret-number}
227 @var{finger-number})} entries used to define fret diagrams.")
228 (duration-log ,integer? "The 2-log of the note head duration,
229 i.e., @code{0} = whole note, @code{1} = half note, etc.")
235 (eccentricity ,number? "How asymmetrical to make a slur.
236 Positive means move the center to the right.")
237 (edge-height ,pair? "A pair of numbers specifying the heights of
238 the vertical edges: @code{(@var{left-height} . @var{right-height})}.")
239 (edge-text ,pair? "A pair specifying the texts to be set at the
240 edges: @code{(@var{left-text} . @var{right-text})}.")
241 (expand-limit ,integer? "Maximum number of measures expanded in
244 (extra-dy ,number? "Slope glissandi this much extra.")
245 (extra-offset ,number-pair? "A pair representing an offset. This
246 offset is added just before outputting the symbol, so the typesetting
247 engine is completely oblivious to it. The values are measured in
248 @code{staff-space} units of the staff's @code{StaffSymbol}.")
249 (extra-spacing-height ,number-pair? "In the horizontal spacing
250 problem, we increase the height of each item by this amount (by adding
251 the @q{car} to the bottom of the item and adding the @q{cdr} to the
252 top of the item). In order to make a grob infinitely high (to prevent
253 the horizontal spacing problem from placing any other grobs above or
254 below this grob), set this to @code{(-inf.0 . +inf.0)}.")
255 (extra-spacing-width ,number-pair? "In the horizontal spacing
256 problem, we pad each item by this amount (by adding the @q{car} on the
257 left side of the item and adding the @q{cdr} on the right side of the
258 item). In order to make a grob take up no horizontal space at all,
259 set this to @code{(+inf.0 . -inf.0)}.")
260 (extra-X-extent ,number-pair? "A grob is enlarged in
261 X@tie{}dimension by this much.")
262 (extra-Y-extent ,number-pair? "A grob is enlarged in
263 Y@tie{}dimension by this much.")
269 (flag ,ly:stencil? "A function returning the full flag stencil
270 for the @code{Stem}, which is passed to the function as the only
271 argument. The default ly:stem::calc-stencil function uses the
272 @code{flag-style} property to determine the correct glyph for the
273 flag. By providing your own function, you can create arbitrary
275 (flag-count ,number? "The number of tremolo beams.")
276 (flag-style ,symbol? "A symbol determining what style of flag
277 glyph is typeset on a @code{Stem}. Valid options include @code{'()}
278 for standard flags, @code{'mensural} and @code{'no-flag}, which
279 switches off the flag.")
280 (font-encoding ,symbol? "The font encoding is the broadest
281 category for selecting a font. Currently, only lilypond's system
282 fonts (Emmentaler) are using this property. Available
283 values are @code{fetaMusic} (Emmentaler), @code{fetaBraces},
284 @code{fetaText} (Emmentaler).")
285 (font-family ,symbol? "The font family is the broadest category
286 for selecting text fonts. Options include: @code{sans},
288 (font-name ,string? "Specifies a file name (without extension) of
289 the font to load. This setting overrides selection using
290 @code{font-family}, @code{font-series} and @code{font-shape}.")
291 (font-series ,symbol? "Select the series of a font. Choices
292 include @code{medium}, @code{bold}, @code{bold-narrow}, etc.")
293 (font-shape ,symbol? "Select the shape of a font. Choices
294 include @code{upright}, @code{italic}, @code{caps}.")
295 (font-size ,number? "The font size, compared to the
296 @q{normal}@tie{}size. @code{0}@tie{}is style-sheet's normal size,
297 @code{-1} is smaller, @code{+1} is bigger. Each step of@tie{}1 is
298 approximately 12% larger; 6@tie{}steps are exactly a factor@tie{}2
299 larger. Fractional values are allowed.")
300 (footnote-text ,markup? "A footnote for the grob.")
301 (force-hshift ,number? "This specifies a manual shift for notes
302 in collisions. The unit is the note head width of the first voice
303 note. This is used by @rinternals{note-collision-interface}.")
304 (fraction ,number-pair? "Numerator and denominator of a time
306 (french-beaming ,boolean? "Use French beaming style for this
307 stem. The stem stops at the innermost beams.")
308 (fret-diagram-details ,list? "An alist of detailed grob
309 properties for fret diagrams. Each alist entry consists of a
310 @code{(@var{property} . @var{value})} pair. The properties which can
311 be included in @code{fret-diagram-details} include the following:
315 @code{barre-type} -- Type of barre indication used. Choices include
316 @code{curved}, @code{straight}, and @code{none}. Default
319 @code{capo-thickness} -- Thickness of capo indicator, in multiples of
320 fret-space. Default value@tie{}0.5.
322 @code{dot-color} -- Color of dots. Options include @code{black} and
323 @code{white}. Default @code{black}.
325 @code{dot-label-font-mag} -- Magnification for font used to label fret
326 dots. Default value@tie{}1.
328 @code{dot-position} -- Location of dot in fret space. Default 0.6 for
329 dots without labels, 0.95-@code{dot-radius} for dots with labels.
331 @code{dot-radius} -- Radius of dots, in terms of fret spaces. Default
332 value 0.425 for labeled dots, 0.25 for unlabeled dots.
334 @code{finger-code} -- Code for the type of fingering indication used.
335 Options include @code{none}, @code{in-dot}, and @code{below-string}.
336 Default @code{none} for markup fret diagrams, @code{below-string} for
337 @code{FretBoards} fret diagrams.
339 @code{fret-count} -- The number of frets. Default@tie{}4.
341 @code{fret-label-custom-format} -- The format string to be used label
342 the lowest fret number, when @code{number-type} equals to
343 @code{custom}. Default@tie{}\"~a\".
345 @code{fret-label-font-mag} -- The magnification of the font used to
346 label the lowest fret number. Default@tie{}0.5.
348 @code{fret-label-vertical-offset} -- The offset of the fret label from
349 the center of the fret in direction parallel to strings.
352 @code{label-dir} -- Side to which the fret label is attached.
353 @code{-1}, @code{#LEFT}, or @code{#DOWN} for left or down; @code{1},
354 @code{#RIGHT}, or @code{#UP} for right or up. Default @code{#RIGHT}.
356 @code{mute-string} -- Character string to be used to indicate muted
357 string. Default @code{\"x\"}.
359 @code{number-type} -- Type of numbers to use in fret label. Choices
360 include @code{roman-lower}, @code{roman-upper}, @code{arabic} and
361 @code{custom}. In the later case, the format string is supplied by
362 the @code{fret-label-custom-format} property.
363 Default @code{roman-lower}.
365 @code{open-string} -- Character string to be used to indicate open
366 string. Default @code{\"o\"}.
368 @code{orientation} -- Orientation of fret-diagram. Options include
369 @code{normal}, @code{landscape}, and @code{opposing-landscape}.
370 Default @code{normal}.
372 @code{string-count} -- The number of strings. Default@tie{}6.
374 @code{string-label-font-mag} -- The magnification of the font used to
375 label fingerings at the string, rather than in the dot. Default value
376 0.6 for @code{normal} orientation, 0.5 for @code{landscape} and
377 @code{opposing-landscape}.
379 @code{string-thickness-factor} -- Factor for changing thickness of
380 each string in the fret diagram. Thickness of string @var{k} is given
382 * (1+@code{string-thickness-factor})@tie{}^ (@var{k}-1).
385 @code{top-fret-thickness} -- The thickness of the top fret line, as a
386 multiple of the standard thickness. Default value@tie{}3.
388 @code{xo-font-magnification} -- Magnification used for mute and open
389 string indicators. Default value@tie{}0.5.
391 @code{xo-padding} -- Padding for open and mute indicators from top
392 fret. Default value 0.25.
394 ;; ugh: double, change.
395 (full-length-padding ,number? "How much padding to use at the
396 right side of a full-length tuplet bracket.")
397 (full-length-to-extent ,boolean? "Run to the extent of the column
398 for a full-length tuplet bracket.")
399 (full-measure-extra-space ,number? "Extra space that is allocated
400 at the beginning of a measure with only one note. This property is
401 read from the NonMusicalPaperColumn that begins the measure.")
402 (full-size-change ,boolean? "Don't make a change clef smaller.")
408 (gap ,ly:dimension? "Size of a gap in a variable symbol.")
409 (gap-count ,integer? "Number of gapped beams for tremolo.")
410 (glyph ,string? "A string determining what @q{style} of glyph is
411 typeset. Valid choices depend on the function that is reading this
413 (glyph-name ,string? "The glyph name within the font.")
414 (glyph-name-alist ,list? "An alist of key-string pairs.")
415 (graphical ,boolean? "Display in graphical (vs. text) form.")
416 (grow-direction ,ly:dir? "Crescendo or decrescendo?")
422 (hair-thickness ,number? "Thickness of the thin line in a bar
424 (harp-pedal-details ,list? "An alist of detailed grob properties
425 for harp pedal diagrams. Each alist entry consists of a
426 @code{(@var{property} . @var{value})} pair. The properties which can
427 be included in harp-pedal-details include the following:
431 @code{box-offset} -- Vertical shift of the center of flat/sharp pedal
432 boxes above/below the horizontal line. Default value@tie{}0.8.
434 @code{box-width} -- Width of each pedal box. Default value@tie{}0.4.
436 @code{box-height} -- Height of each pedal box. Default value@tie{}1.0.
438 @code{space-before-divider} -- Space between boxes before the first
439 divider (so that the diagram can be made symmetric). Default
442 @code{space-after-divider} -- Space between boxes after the first
443 divider. Default value@tie{}0.8.
445 @code{circle-thickness} -- Thickness (in unit of the line-thickness)
446 of the ellipse around circled pedals. Default value@tie{}0.5.
448 @code{circle-x-padding} -- Padding in X direction of the ellipse
449 around circled pedals. Default value 0.15.
451 @code{circle-y-padding} -- Padding in Y direction of the ellipse
452 around circled pedals. Default value@tie{}0.2.
454 (head-direction ,ly:dir? "Are the note heads left or right in a
456 (height ,ly:dimension? "Height of an object in @code{staff-space}
458 (height-limit ,ly:dimension? "Maximum slur height: The longer the
459 slur, the closer it is to this height.")
460 (hide-tied-accidental-after-break ,boolean? "If set, an accidental
461 that appears on a tied note after a line break will not be displayed.")
462 (horizontal-shift ,integer? "An integer that identifies ranking
463 of @code{NoteColumn}s for horizontal shifting. This is used by
464 @rinternals{note-collision-interface}.")
465 (horizontal-skylines ,ly:skyline-pair? "Two skylines, one to the
466 left and one to the right of this grob.")
472 (ignore-collision ,boolean? "If set, don't do note collision
473 resolution on this @code{NoteColumn}.")
474 (implicit ,boolean? "Is this an implicit bass figure?")
475 (inspect-index ,integer? "If debugging is set, set beam and slur
476 configuration to this index, and print the respective scores.")
477 (inspect-quants ,number-pair? "If debugging is set, set beam and
478 slur quants to this position, and print the respective scores.")
484 (keep-inside-line ,boolean? "If set, this column cannot have
485 objects sticking into the margin.")
486 (kern ,ly:dimension? "Amount of extra white space to add. For
487 bar lines, this is the amount of space after a thick line.")
488 (knee ,boolean? "Is this beam kneed?")
489 (knee-spacing-correction ,number? "Factor for the optical
490 correction amount for kneed beams. Set between @code{0} for no
491 correction and @code{1} for full correction.")
497 (labels ,list? "List of labels (symbols) placed on a column.")
498 (layer ,integer? "An integer which determines the order of printing
499 objects. Objects with the lowest value of layer are drawn first, then
500 objects with progressively higher values are drawn, so objects with
501 higher values overwrite objects with lower values. By default most
502 objects are assigned a layer value of 1.")
503 (ledger-line-thickness ,number-pair? "The thickness of ledger
504 lines. It is the sum of 2@tie{}numbers: The first is the factor for
505 line thickness, and the second for staff space. Both contributions
507 (left-bound-info ,list? "An alist of properties for determining
508 attachments of spanners to edges.")
509 (left-padding ,ly:dimension? "The amount of space that is put
510 left to an object (e.g., a lyric extender).")
511 (length ,ly:dimension? "User override for the stem length of
513 (length-fraction ,number? "Multiplier for lengths. Used for
514 determining ledger lines and stem lengths.")
515 (line-break-penalty ,number? "Penalty for a line break at this
516 column. This affects the choices of the line breaker; it avoids a
517 line break at a column with a positive penalty and prefers a line
518 break at a column with a negative penalty.")
519 (line-break-permission ,symbol? "Instructs the line breaker on
520 whether to put a line break at this column. Can be @code{force} or
522 (line-break-system-details ,list? "An alist of properties to use
523 if this column is the start of a system.")
524 (line-count ,integer? "The number of staff lines.")
525 (line-positions ,list? "Vertical positions of staff lines.")
526 (line-thickness ,number? "The thickness of the tie or slur
528 (long-text ,markup? "Text markup. See @ruser{Formatting text}.")
534 (max-beam-connect ,integer? "Maximum number of beams to connect
535 to beams from this stem. Further beams are typeset as beamlets.")
536 (max-stretch ,number? "The maximum amount that this
537 @code{VerticalAxisGroup} can be vertically stretched (for example, in
538 order to better fill a page).")
539 (measure-count ,integer? "The number of measures for a
540 multi-measure rest.")
541 (measure-length ,ly:moment? "Length of a measure. Used in some
542 spacing situations.")
543 (merge-differently-dotted ,boolean? "Merge note heads in
544 collisions, even if they have a different number of dots. This is
545 normal notation for some types of polyphonic music.
547 @code{merge-differently-dotted} only applies to opposing stem
548 directions (i.e., voice 1 &@tie{}2).")
549 (merge-differently-headed ,boolean? "Merge note heads in
550 collisions, even if they have different note heads. The smaller of
551 the two heads is rendered invisible. This is used in polyphonic
552 guitar notation. The value of this setting is used by
553 @rinternals{note-collision-interface}.
555 @code{merge-differently-headed} only applies to opposing stem
556 directions (i.e., voice 1 &@tie{}2).")
557 (minimum-distance ,ly:dimension? "Minimum distance between rest
559 (minimum-length ,ly:dimension? "Try to make a spanner at least
560 this long, normally in the horizontal direction. This requires an
561 appropriate callback for the @code{springs-and-rods} property. If
562 added to a @code{Tie}, this sets the minimum distance between
564 (minimum-length-fraction ,number? "Minimum length of ledger line
565 as fraction of note head size.")
566 (minimum-space ,ly:dimension? "Minimum distance that the victim
567 should move (after padding).")
568 (minimum-X-extent ,number-pair? "Minimum size of an object in
569 X@tie{}dimension, measured in @code{staff-space} units.")
570 (minimum-Y-extent ,number-pair? "Minimum size of an object in
571 Y@tie{}dimension, measured in @code{staff-space} units.")
577 (neutral-direction ,ly:dir? "Which direction to take in the
578 center of the staff.")
579 (neutral-position ,number? "Position (in half staff spaces) where
580 to flip the direction of custos stem.")
581 (next ,ly:grob? "Object that is next relation (e.g., the lyric
582 syllable following an extender).")
583 (no-alignment ,boolean? "If set, don't place this grob in a
584 @code{VerticalAlignment}; rather, place it using its own
585 @code{Y-offset} callback.")
586 (no-ledgers ,boolean? "If set, don't draw ledger lines on this
588 (no-stem-extend ,boolean? "If set, notes with ledger lines do not
589 get stems extending to the middle staff line.")
590 (non-break-align-symbols ,list? "A list of symbols that determine
591 which NON-break-aligned interfaces to align this to.")
592 (non-default ,boolean? "Set for manually specified clefs.")
593 (non-musical ,boolean? "True if the grob belongs to a
594 @code{NonMusicalPaperColumn}.")
595 (nonstaff-nonstaff-spacing ,list? "The spacing alist
596 controlling the distance between the current non-staff line and
597 the next non-staff line in the direction of @code{staff-affinity},
598 if both are on the same side of the related staff, and
599 @code{staff-affinity} is either @code{UP} or @code{DOWN}. See
600 @code{staff-staff-spacing} for a description of the alist
602 (nonstaff-relatedstaff-spacing ,list? "The spacing alist
603 controlling the distance between the current non-staff line and
604 the nearest staff in the direction of @code{staff-affinity}, if
605 there are no non-staff lines between the two, and
606 @code{staff-affinity} is either @code{UP} or @code{DOWN}. If
607 @code{staff-affinity} is @code{CENTER}, then
608 @code{nonstaff-relatedstaff-spacing} is used for the nearest
609 staves on @emph{both} sides, even if other non-staff lines appear
610 between the current one and either of the staves. See
611 @code{staff-staff-spacing} for a description of the alist
613 (nonstaff-unrelatedstaff-spacing ,list? "The spacing alist
614 controlling the distance between the current non-staff line and
615 the nearest staff in the opposite direction from
616 @code{staff-affinity}, if there are no other non-staff lines
617 between the two, and @code{staff-affinity} is either @code{UP} or
618 @code{DOWN}. See @code{staff-staff-spacing} for a description of
619 the alist structure.")
620 (normalized-endpoints ,pair? "Represents left and right placement
621 over the total spanner, where the width of the spanner is normalized
623 (note-names ,vector? "Vector of strings containing names for
624 easy-notation note heads.")
630 (outside-staff-horizontal-padding ,number? "By default, an
631 outside-staff-object can be placed so that is it very close to another
632 grob horizontally. If this property is set, the outside-staff-object
633 is raised so that it is not so close to its neighbor.")
634 (outside-staff-padding ,number? "The padding to place between
635 this grob and the staff when spacing according to
636 @code{outside-staff-priority}.")
637 (outside-staff-priority ,number? "If set, the grob is positioned
638 outside the staff in such a way as to avoid all collisions. In case
639 of a potential collision, the grob with the smaller
640 @code{outside-staff-priority} is closer to the staff.")
646 (packed-spacing ,boolean? "If set, the notes are spaced as
647 tightly as possible.")
648 (padding ,ly:dimension? "Add this much extra space between
649 objects that are next to each other.")
650 (padding-pairs ,list? "An alist mapping @code{(@var{name}
651 . @var{name})} to distances.")
652 (page-break-penalty ,number? "Penalty for page break at this
653 column. This affects the choices of the page breaker; it avoids a
654 page break at a column with a positive penalty and prefers a page
655 break at a column with a negative penalty.")
656 (page-break-permission ,symbol? "Instructs the page breaker on
657 whether to put a page break at this column. Can be @code{force} or
659 (page-turn-penalty ,number? "Penalty for a page turn at this
660 column. This affects the choices of the page breaker; it avoids a
661 page turn at a column with a positive penalty and prefers a page turn
662 at a column with a negative penalty.")
663 (page-turn-permission ,symbol? "Instructs the page breaker on
664 whether to put a page turn at this column. Can be @code{force} or
666 (parenthesized ,boolean? "Parenthesize this grob.")
667 (positions ,number-pair? "Pair of staff coordinates
668 @code{(@var{left} . @var{right})}, where both @var{left} and
669 @var{right} are in @code{staff-space} units of the current staff. For
670 slurs, this value selects which slur candidate to use; if extreme
671 positions are requested, the closest one is taken.")
672 (prefer-dotted-right ,boolean? "For note collisions, prefer to
673 shift dotted up-note to the right, rather than shifting just the
680 (ratio ,number? "Parameter for slur shape. The higher this
681 number, the quicker the slur attains its @code{height-limit}.")
682 (remove-empty ,boolean? "If set, remove group if it contains no
684 (remove-first ,boolean? "Remove the first staff of an orchestral
686 (restore-first ,boolean? "Print a natural before the
688 (rhythmic-location ,rhythmic-location? "Where (bar number,
689 measure position) in the score.")
690 (right-bound-info ,list? "An alist of properties for determining
691 attachments of spanners to edges.")
692 (right-padding ,ly:dimension? "Space to insert on the right side
693 of an object (e.g., between note and its accidentals).")
694 (rotation ,list? "Number of degrees to rotate this object, and
695 what point to rotate around. For example, @code{#'(45 0 0)} rotates
696 by 45 degrees around the center of this object.")
702 (same-direction-correction ,number? "Optical correction amount
703 for stems that are placed in tight configurations. This amount is
704 used for stems with the same direction to compensate for note head to
706 (script-priority ,number? "A sorting key that determines in what
707 order a script is within a stack of scripts.")
708 (self-alignment-X ,number? "Specify alignment of an object. The
709 value @code{-1} means left aligned, @code{0}@tie{}centered, and
710 @code{1}@tie{}right-aligned in X@tie{}direction. Other numerical
711 values may also be specified.")
712 (self-alignment-Y ,number? "Like @code{self-alignment-X} but for
714 (shorten-pair ,number-pair? "The lengths to shorten a
715 text-spanner on both sides, for example a pedal bracket. Positive
716 values shorten the text-spanner, while negative values lengthen it.")
717 (shortest-duration-space ,ly:dimension? "Start with this much
718 space for the shortest duration. This is expressed in
719 @code{spacing-increment} as unit. See also
720 @rinternals{spacing-spanner-interface}.")
721 (shortest-playing-duration ,ly:moment? "The duration of the
722 shortest note playing here.")
723 (shortest-starter-duration ,ly:moment? "The duration of the
724 shortest note that starts here.")
725 (side-axis ,number? "If the value is @code{#X} (or
726 equivalently@tie{}@code{0}), the object is placed horizontally next to
727 the other object. If the value is @code{#Y} or@tie{}@code{1}, it is
729 (side-relative-direction ,ly:dir? "Multiply direction of
730 @code{direction-source} with this to get the direction of this
732 (size ,number? "Size of object, relative to standard size.")
733 (skyline-horizontal-padding ,number? "For determining the
734 vertical distance between two staves, it is possible to have a
735 configuration which would result in a tight interleaving of grobs from
736 the top staff and the bottom staff. The larger this parameter is, the
737 farther apart the staves are placed in such a configuration.")
738 (skyline-vertical-padding ,number? "The amount by which the left
739 and right skylines of a column are padded vertically, beyond the
740 @code{Y-extent}s and @code{extra-spacing-height}s of the constituent
741 grobs in the column. Increase this to prevent interleaving of grobs
742 from adjacent columns.")
743 (slash-negative-kern ,number? "The space to remove between
744 slashes in percent repeat glyphs. Larger values bring the two
745 elements closer together.")
746 (slope ,number? "The slope of this object.")
747 (slur-padding ,number? "Extra distance between slur and script.")
748 (space-alist ,list? "A table that specifies distances between
749 prefatory items, like clef and time-signature. The format is an alist
750 of spacing tuples: @code{(@var{break-align-symbol} @var{type}
751 . @var{distance})}, where @var{type} can be the symbols
752 @code{minimum-space} or @code{extra-space}.")
753 (space-to-barline ,boolean? "If set, the distance between a note
754 and the following non-musical column will be measured to the bar line
755 instead of to the beginning of the non-musical column. If there is a
756 clef change followed by a bar line, for example, this means that we
757 will try to space the non-musical column as though the clef is not
759 (spacing-increment ,number? "Add this much space for a doubled
760 duration. Typically, the width of a note head. See also
761 @rinternals{spacing-spanner-interface}.")
762 (spacing-pair ,pair? "A pair of alignment symbols which set an object's
763 spacing relative to its left and right @code{BreakAlignment}s.
765 For example, a @code{MultiMeasureRest} will ignore prefatory items at its
766 bounds (i.e., clefs, key signatures and time signatures) using the following
770 \\override MultiMeasureRest #'spacing-pair = #'(staff-bar . staff-bar)
772 (springs-and-rods ,boolean? "Dummy variable for triggering
774 (stacking-dir ,ly:dir? "Stack objects in which direction?")
775 (staff-affinity ,ly:dir? "The direction of the staff to use
776 for spacing the current non-staff line. Choices are @code{UP},
777 @code{DOWN}, and @code{CENTER}. If @code{CENTER}, the non-staff
778 line will be placed equidistant between the two nearest staves on
779 either side, unless collisions or other spacing constraints
780 prevent this. Setting @code{staff-affinity} for a staff causes it
781 to be treated as a non-staff line. Setting @code{staff-affinity}
782 to @code{#f} causes a non-staff line to be treated as a staff.")
783 (staff-padding ,ly:dimension? "Maintain this much space between
784 reference points and the staff. Its effect is to align objects of
785 differing sizes (like the dynamics @b{p} and @b{f}) on their
787 (staff-position ,number? "Vertical position, measured in half
788 staff spaces, counted from the middle line.")
789 (staff-space ,ly:dimension? "Amount of space between staff lines,
790 expressed in global @code{staff-space}.")
791 (staff-staff-spacing ,list? "When applied to a staff-group's
792 @code{StaffGrouper} grob, this spacing alist controls the distance
793 between consecutive staves within the staff-group. When applied
794 to a staff's @code{VerticalAxisGroup} grob, it controls the
795 distance between the staff and the nearest staff below it in the
796 same system, replacing any settings inherited from the
797 @code{StaffGrouper} grob of the containing staff-group, if there
798 is one. This property remains in effect even when non-staff lines
799 appear between staves. The alist can contain the following keys:
804 @code{basic-distance} -- the vertical distance, measured in
805 staff-spaces, between the reference points of the two items when
806 no collisions would result, and no stretching or compressing is in
810 @code{minimum-distance} -- the smallest allowable vertical
811 distance, measured in staff-spaces, between the reference points
812 of the two items, when compressing is in effect.
815 @code{padding} -- the minimum required amount of unobstructed
816 vertical whitespace between the bounding boxes (or skylines) of
817 the two items, measured in staff-spaces.
820 @code{stretchability} -- a unitless measure of the dimension's
821 relative propensity to stretch. If zero, the distance will not
822 stretch (unless collisions would result).
825 (staffgroup-staff-spacing ,list? "The spacing alist
826 controlling the distance between the last staff of the current
827 staff-group and the staff just below it in the same system, even
828 if one or more non-staff lines exist between the two staves. If
829 the @code{staff-staff-spacing} property of the staff's
830 @code{VerticalAxisGroup} grob is set, that is used instead. See
831 @code{staff-staff-spacing} for a description of the alist
833 (stem-attachment ,number-pair? "An @code{(@var{x} . @var{y})}
834 pair where the stem attaches to the notehead.")
835 (stem-end-position ,number? "Where does the stem end (the end is
836 opposite to the support-head)?")
838 (stem-spacing-correction ,number? "Optical correction amount for
839 stems that are placed in tight configurations. For opposite
840 directions, this amount is the correction for two normal sized stems
841 that overlap completely.")
842 (stemlet-length ,number? "How long should be a stem over a
844 (stencil ,ly:stencil? "The symbol to print.")
845 (stencils ,list? "Multiple stencils, used as intermediate
847 (strict-grace-spacing ,boolean? "If set, main notes are spaced
848 normally, then grace notes are put left of the musical columns for the
850 (strict-note-spacing ,boolean? "If set, unbroken columns with
851 non-musical material (clefs, bar lines, etc.) are not spaced
852 separately, but put before musical columns.")
853 (stroke-style ,string? "Set to @code{\"grace\"} to turn stroke
855 (style ,symbol? "This setting determines in what style a grob is
856 typeset. Valid choices depend on the @code{stencil} callback reading
863 (text ,markup? "Text markup. See @ruser{Formatting text}.")
864 ;;FIXME -- Should both be the same?
865 (text-direction ,ly:dir? "This controls the ordering of the
866 words. The default @code{RIGHT} is for roman text. Arabic or Hebrew
867 should use @code{LEFT}.")
868 (thick-thickness ,number? "Bar line thickness, measured in
869 @code{line-thickness}.")
870 (thickness ,number? "Line thickness, generally measured in
871 @code{line-thickness}.")
872 (thin-kern ,number? "The space after a hair-line in a bar line.")
873 (tie-configuration ,list? "List of @code{(@var{position} .
874 @var{dir})} pairs, indicating the desired tie configuration, where
875 @var{position} is the offset from the center of the staff in staff
876 space and @var{dir} indicates the direction of the tie
877 (@code{1}=>up, @code{-1}=>down, @code{0}=>center). A non-pair entry
878 in the list causes the corresponding tie to be formatted
880 (to-barline ,boolean? "If true, the spanner will stop at the bar
881 line just before it would otherwise stop.")
882 (toward-stem-shift ,number? "Amount by which scripts are shifted
883 toward the stem if their direction coincides with the stem direction.
884 @code{0.0} means keep the default position (centered on the note
885 head), @code{1.0} means centered on the stem. Interpolated values are
887 (transparent ,boolean? "This makes the grob invisible.")
893 (uniform-stretching ,boolean? "If set, items stretch
894 proportionally to their durations. This looks better in complex
895 polyphonic patterns.")
896 (used ,boolean? "If set, this spacing column is kept in the
903 (vertical-skylines ,ly:skyline-pair? "Two skylines, one above and
904 one below this grob.")
910 (when ,ly:moment? "Global time step associated with this column
912 (whiteout ,boolean? "If true, the grob is printed over a white
913 background to white-out underlying material, if the grob is visible.
914 Usually #f by default.")
915 (width ,ly:dimension? "The width of a grob measured in staff
917 (word-space ,ly:dimension? "Space to insert between words in
924 (X-extent ,number-pair? "Hard coded extent in X@tie{}direction.")
925 (X-offset ,number? "The horizontal amount that this object is
926 moved relative to its X-parent.")
932 (Y-extent ,number-pair? "Hard coded extent in Y@tie{}direction.")
933 (Y-offset ,number? "The vertical amount that this object is moved
934 relative to its Y-parent.")
939 (zigzag-length ,ly:dimension? "The length of the lines of a
940 zigzag, relative to @code{zigzag-width}. A value of@tie{}@code{1}
941 gives 60-degree zigzags.")
942 (zigzag-width ,ly:dimension? "The width of one zigzag squiggle.
943 This number is adjusted slightly so that the glissando line can be
944 constructed from a whole number of squiggles.")
952 (define (define-internal-grob-property symbol type? description)
953 (define-grob-property symbol type? description)
954 (set-object-property! symbol 'backend-internal #t)
959 (define-public all-internal-grob-properties
962 (apply define-internal-grob-property x))
966 ;; grobs & grob arrays. (alphabetical)
967 (accidental-grob ,ly:grob? "The accidental for this note.")
968 (accidental-grobs ,list? "An alist with @code{(@var{notename} .
969 @var{groblist})} entries.")
970 (adjacent-spanners ,ly:grob-array? "An array of directly neighboring
972 (all-elements ,ly:grob-array? "An array of all grobs in this line. Its
973 function is to protect objects from being garbage collected.")
974 (arpeggio ,ly:grob? "A pointer to an @code{Arpeggio} object.")
975 (axis-group-parent-X ,ly:grob? "Containing X@tie{}axis group.")
976 (axis-group-parent-Y ,ly:grob? "Containing Y@tie{}axis group.")
978 (bars ,ly:grob-array? "An array of bar line pointers.")
979 (beam ,ly:grob? "A pointer to the beam, if applicable.")
980 (bounded-by-me ,ly:grob-array? "An array of spanners that have this
981 column as start/begin point. Only columns that have grobs or act as
983 (bracket ,ly:grob? "The bracket for a number.")
985 (columns ,ly:grob-array? "An array of grobs, typically containing
986 @code{PaperColumn} or @code{NoteColumn} objects.")
987 (conditional-elements ,ly:grob-array? "Internal use only.")
988 (covered-grobs ,ly:grob-array? "Grobs that could potentially collide
991 (direction-source ,ly:grob? "In case @code{side-relative-direction} is
992 set, which grob to get the direction from.")
993 (display-cautionary ,boolean? "Should the grob be displayed as a cautionary grob?")
994 (dot ,ly:grob? "A reference to a @code{Dots} object.")
995 (dots ,ly:grob-array? "Multiple @code{Dots} objects.")
997 (elements ,ly:grob-array? "An array of grobs; the type is depending on
998 the grob where this is set in.")
999 (encompass-objects ,ly:grob-array? "Objects that a slur should avoid
1000 in addition to notes and stems.")
1002 (figures ,ly:grob-array? "Figured bass objects for continuation line.")
1004 (grace-spacing ,ly:grob? "A run of grace notes.")
1006 (heads ,ly:grob-array? "An array of note heads.")
1008 (items-worth-living ,ly:grob-array? "An array of interesting items. If
1009 empty in a particular staff, then that staff is erased.")
1011 (keep-alive-with ,ly:grob-array? "An array of other
1012 @code{VerticalAxisGroup}s. If any of them are alive, then we will stay alive.")
1014 (left-items ,ly:grob-array? "DOCME")
1015 (left-neighbor ,ly:grob? "The right-most column that has a spacing-wish
1018 (normal-stems ,ly:grob-array? "An array of visible stems.")
1019 (note-columns ,ly:grob-array? "An array of @code{NoteColumn} grobs.")
1020 (note-head ,ly:grob? "A single note head.")
1021 (note-heads ,ly:grob-array? "An array of note head grobs.")
1022 (pedal-text ,ly:grob? "A pointer to the text of a mixed-style piano
1024 (pure-relevant-grobs ,ly:grob-array? "All the grobs (items and spanners)
1025 that are relevant for finding the @code{pure-Y-extent}")
1026 (pure-relevant-items ,ly:grob-array? "A subset of elements that are
1027 relevant for finding the @code{pure-Y-extent}.")
1028 (pure-relevant-spanners ,ly:grob-array? "A subset of elements that are
1029 relevant for finding the @code{pure-Y-extent}.")
1030 (pure-Y-common ,ly:grob? "A cache of the
1031 @code{common_refpoint_of_array} of the @code{elements} grob set.")
1033 (rest ,ly:grob? "A pointer to a @code{Rest} object.")
1034 (rest-collision ,ly:grob? "A rest collision that a rest is in.")
1035 (rests ,ly:grob-array? "An array of rest objects.")
1036 (right-items ,ly:grob-array? "DOCME")
1037 (right-neighbor ,ly:grob? "See @code{left-neighbor}.")
1039 (side-support-elements ,ly:grob-array? "The side support, an array of
1041 (slur ,ly:grob? "A pointer to a @code{Slur} object.")
1042 (spacing ,ly:grob? "The spacing spanner governing this section.")
1043 (spacing-wishes ,ly:grob-array? "An array of note spacing or staff spacing
1045 (span-start ,boolean? "Is the note head at the start of a spanner?")
1046 (spanner-placement ,ly:dir? "The place of an annotation on a spanner.
1047 LEFT is for the first spanner, and RIGHT is for the last. CENTER will
1048 place it on the broken spanner that falls closest to the center of the length
1049 of the entire spanner, although this behavior is unpredictable in situations
1050 with lots of rhythmic diversity. For predictable results, use LEFT and RIGHT.")
1051 (staff-grouper ,ly:grob? "The staff grouper we belong to.")
1052 (staff-symbol ,ly:grob? "The staff symbol grob that we are in.")
1053 (stem ,ly:grob? "A pointer to a @code{Stem} object.")
1054 (stems ,ly:grob-array? "An array of stem objects.")
1056 (tie ,ly:grob? "A pointer to a @code{Tie} object.")
1057 (tremolo-flag ,ly:grob? "The tremolo object on a stem.")
1058 (tuplet-number ,ly:grob? "The number for a bracket.")
1059 (tuplets ,ly:grob-array? "An array of smaller tuplet brackets.")
1060 (X-common ,ly:grob? "Common reference point for axis group.")
1061 (Y-common ,ly:grob? "See @code{X-common}.")
1065 (adjacent-pure-heights ,pair? "A pair of vectors. Used by a
1066 @code{VerticalAxisGroup} to cache the @code{Y-extent}s of different column
1069 (bar-extent ,number-pair? "The Y-extent of the actual bar line.
1070 This may differ from @code{Y-extent} because it does not include the dots in
1071 a repeat bar line.")
1072 (begin-of-line-visible ,boolean? "Set to make @code{ChordName} or
1073 @code{FretBoard} be visible only at beginning of line or at
1076 (cause ,scheme? "Any kind of causation objects (i.e., music, or perhaps
1077 translator) that was the cause for this grob.")
1078 (cross-staff ,boolean? "For a beam or a stem, this is true if we
1079 depend on inter-staff spacing.")
1081 (delta-position ,number? "The vertical position difference.")
1083 (font ,ly:font-metric? "A cached font metric object.")
1084 (forced ,boolean? "Manually forced accidental.")
1086 (head-width ,ly:dimension? "The width of this ligature head.")
1088 (ideal-distances ,list? "@code{(@var{obj} . (@var{dist} .
1089 @var{strength}))} pairs.")
1090 (important-column-ranks ,vector? "A cache of columns that contain
1091 @code{items-worth-living} data.")
1092 (interfaces ,list? "A list of symbols indicating the interfaces
1093 supported by this object. It is initialized from the @code{meta} field.")
1095 (least-squares-dy ,number? "The ideal beam slope, without damping.")
1097 (maybe-loose ,boolean? "Used to mark a breakable column that is
1098 loose if and only if it is in the middle of a line.")
1099 (meta ,list? "Provide meta information. It is an alist with the
1100 entries @code{name} and @code{interfaces}.")
1101 (minimum-distances ,list? "A list of rods that have the format
1102 @code{(@var{obj} . @var{dist})}.")
1104 (positioning-done ,boolean? "Used to signal that a positioning element
1105 did its job. This ensures that a positioning is only done once.")
1106 (pure-Y-extent ,number-pair? "The estimated height of a system.")
1107 (pure-Y-offset-in-progress ,boolean? "A debugging aid for catching
1108 cyclic dependencies.")
1109 (quantize-position ,boolean? "If set, a vertical alignment is aligned
1110 to be within staff spaces.")
1111 (quantized-positions ,number-pair? "The beam positions after
1114 (script-stencil ,pair? "A pair @code{(@var{type} . @var{arg})} which
1115 acts as an index for looking up a @code{Stencil} object.")
1116 (shorten ,ly:dimension? "The amount of space that a stem is shortened.
1117 Internally used to distribute beam shortening over stems.")
1118 (stem-info ,pair? "A cache of stem parameters.")
1119 (system-Y-offset ,number? "The Y-offset (relative to the bottom of the
1120 top-margin of the page) of the system to which this staff belongs.")
1122 (use-breve-rest ,boolean? "Use breve rests for measures longer
1123 than a whole rest.")
1129 ;; There are too many properties for ancient notation;
1130 ;; probably neume-types (a list of symbols) would also work.
1132 ;; However, such a list would consist of a couple of dozens of
1133 ;; entries, since head prefixes may be combined in many ways. If
1134 ;; the macros in `gregorian.ly' would directly set prefix-set,
1135 ;; all the head prefixes could be junked; however, such macros
1136 ;; would be quite numerous, I guess. --jr
1138 (add-cauda ,boolean? "Does this flexa require an additional cauda on
1140 (add-join ,boolean? "Is this ligature head-joined with the next one
1141 by a vertical line?")
1142 (add-stem ,boolean? "Is this ligature head a virga and therefore needs
1143 an additional stem on the right side?")
1144 (ascendens ,boolean? "Is this neume of ascending type?")
1145 (auctum ,boolean? "Is this neume liquescentically augmented?")
1147 (cavum ,boolean? "Is this neume outlined?")
1148 (context-info ,integer? "Within a ligature, the final glyph or shape of
1149 a head may be affected by the left and/or right neighbour head.
1150 @code{context-info} holds for each head such information about the left and
1151 right neighbour, encoded as a bit mask.")
1153 (deminutum ,boolean? "Is this neume deminished?")
1154 (descendens ,boolean? "Is this neume of descendent type?")
1156 (flexa-height ,ly:dimension? "The height of a flexa shape in a ligature
1157 grob (in @code{staff-space} units).")
1158 (flexa-interval ,integer? "The interval spanned by the two notes of a
1159 flexa shape (1 is a second, 7 is an octave).")
1160 (flexa-width ,ly:dimension? "The width of a flexa shape in a
1161 ligature grob in (in @code{staff-space} units).")
1162 (ligature-flexa ,boolean? "request joining note to the previous one
1165 (inclinatum ,boolean? "Is this neume an inclinatum?")
1168 (linea ,boolean? "Attach vertical lines to this neume?")
1170 (oriscus ,boolean? "Is this neume an oriscus?")
1172 (pes-or-flexa ,boolean? "Shall this neume be joined with the previous
1174 (prefix-set ,number? "A bit mask that holds all Gregorian head
1175 prefixes, such as @code{\\virga} or @code{\\quilisma}.")
1176 (primitive ,integer? "A pointer to a ligature primitive, i.e., an item
1177 similar to a note head that is part of a ligature.")
1179 (quilisma ,boolean? "Is this neume a quilisma?")
1181 (stropha ,boolean? "Is this neume a stropha?")
1183 (virga ,boolean? "Is this neume a virga?")
1185 (x-offset ,ly:dimension? "Extra horizontal offset for ligature heads.")
1189 (define-public all-backend-properties
1191 all-internal-grob-properties
1192 all-user-grob-properties))