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3.4 Internal backend properties
-
X-common
(layout object) Common reference point for axis group.
-
Y-common
(layout object) See
X-common
.-
accidental-grob
(layout object) The accidental for this note.
-
accidental-grobs
(list) An alist with
(notename . groblist)
entries.-
add-cauda
(boolean) Does this flexa require an additional cauda on the left side?
-
add-join
(boolean) Is this ligature head-joined with the next one by a vertical line?
-
add-stem
(boolean) Is this ligature head a virga and therefore needs an additional stem on the right side?
-
adjacent-hairpins
(unknown) A list of directly neighboring hairpins.
-
adjacent-pure-heights
(vector) Used by a
VerticalAxisGroup
to cache theY-extent
s of different column ranges.-
all-elements
(unknown) A list of all grobs in this line. Its function is to protect objects from being garbage collected.
-
arpeggio
(layout object) A pointer to an
Arpeggio
object.-
ascendens
(boolean) Is this neume of ascending type?
-
auctum
(boolean) Is this neume liquescentically augmented?
-
axis-group-parent-X
(layout object) Containing X axis group.
-
axis-group-parent-Y
(layout object) Containing Y axis group.
-
bar-extent
(pair of numbers) The Y-extent of the actual bar line. This may differ from
Y-extent
because it does not include the dots in a repeat bar line.-
bars
(unknown) A list of bar line pointers.
-
beam
(layout object) A pointer to the beam, if applicable.
-
begin-of-line-visible
(boolean) Used for marking
ChordNames
that should only show changes.-
bounded-by-me
(unknown) A list of spanners that have this column as start/begin point. Only columns that have grobs or act as bounds are spaced.
-
bracket
(layout object) The bracket for a number.
-
cause
(any type) Any kind of causation objects (i.e., music, or perhaps translator) that was the cause for this grob.
-
cavum
(boolean) Is this neume outlined?
-
columns
(unknown) A list of grobs, typically containing
PaperColumn
orNoteColumn
objects.-
conditional-elements
(unknown) Internal use only.
-
context-info
(integer) Within a ligature, the final glyph or shape of a head may be affected by the left and/or right neighbour head.
context-info
holds for each head such information about the left and right neighbour, encoded as a bit mask.-
cross-staff
(boolean) For a beam or a stem, this is true if we depend on inter-staff spacing.
-
delta-position
(number) The vertical position difference.
-
deminutum
(boolean) Is this neume deminished?
-
descendens
(boolean) Is this neume of descendent type?
-
details
(list) Alist of parameters for detailed grob behavior.
More information on the allowed parameters can be found by inspecting ‘lily/slur-scoring.cc’, ‘lily/beam-quanting.cc’, and ‘lily/tie-formatting-problem.cc’. Setting
debug-tie-scoring
,debug-beam-scoring
ordebug-slur-scoring
also provides useful clues.-
direction-source
(layout object) In case
side-relative-direction
is set, which grob to get the direction from.-
dot
(layout object) A reference to a
Dots
object.-
dots
(unknown) Multiple
Dots
objects.-
elements
(unknown) A list of grobs; the type is depending on the grob where this is set in.
-
encompass-objects
(unknown) Objects that a slur should avoid in addition to notes and stems.
-
figures
(unknown) Figured bass objects for continuation line.
-
flexa-height
(dimension, in staff space) The height of a flexa shape in a ligature grob (in
staff-space
units).-
flexa-width
(dimension, in staff space) The width of a flexa shape in a ligature grob in (in
staff-space
units).-
font
(font metric) A cached font metric object.
-
forced
(boolean) Manually forced accidental.
-
glyph-name
(string) The glyph name within the font.
-
grace-spacing
(layout object) A run of grace notes.
-
head-width
(dimension, in staff space) The width of this ligature head.
-
heads
(unknown) A list of note heads.
-
ideal-distances
(list) (obj . (dist . strength))
pairs.-
important-column-ranks
(vector) A cache of columns that contain
items-worth-living
data.-
inclinatum
(boolean) Is this neume an inclinatum?
-
interfaces
(list) A list of symbols indicating the interfaces supported by this object. It is initialized from the
meta
field.-
items-worth-living
(unknown) A list of interesting items. If empty in a particular staff, then that staff is erased.
-
join-heads
(boolean) Whether to join the note heads of an ambitus grob with a vertical line.
-
join-right-amount
(number) DOCME
-
least-squares-dy
(number) The ideal beam slope, without damping.
-
left-items
(unknown) DOCME
-
left-neighbors
(unknown) A list of
spacing-wishes
grobs that are close to the current column.The closest
spacing-wishes
determine the actual distances between the columns.-
linea
(boolean) Attach vertical lines to this neume?
-
meta
(list) Provide meta information. It is an alist with the entries
name
andinterfaces
.-
minimum-distances
(list) A list of rods that have the format
(obj . dist)
.-
normal-stems
(unknown) An array of visible stems.
-
note-columns
(pair) A list of
NoteColumn
grobs.-
note-head
(layout object) A single note head.
-
note-heads
(unknown) A list of note head grobs.
-
oriscus
(boolean) Is this neume an oriscus?
-
pedal-text
(layout object) A pointer to the text of a mixed-style piano pedal.
-
pes-or-flexa
(boolean) Shall this neume be joined with the previous head?
-
positioning-done
(boolean) Used to signal that a positioning element did its job. This ensures that a positioning is only done once.
-
prefix-set
(number) A bit mask that holds all Gregorian head prefixes, such as
\virga
or\quilisma
.-
primitive
(integer) A pointer to a ligature primitive, i.e., an item similar to a note head that is part of a ligature.
-
pure-Y-common
(layout object) A cache of the
common_refpoint_of_array
of theelements
grob set.-
pure-Y-extent
(pair of numbers) The estimated height of a system.
-
pure-Y-offset-in-progress
(boolean) A debugging aid for catching cyclic dependencies.
-
pure-relevant-items
(unknown) A subset of elements that are relevant for finding the
pure-Y-extent
.-
pure-relevant-spanners
(unknown) A subset of elements that are relevant for finding the
pure-Y-extent
.-
quant-score
(string) The beam quanting score; stored for debugging.
-
quantize-position
(boolean) If set, a vertical alignment is aligned to be within staff spaces.
-
quantized-positions
(pair of numbers) The beam positions after quanting.
-
quilisma
(boolean) Is this neume a quilisma?
-
rest
(layout object) A pointer to a
Rest
object.-
rest-collision
(layout object) A rest collision that a rest is in.
-
rests
(unknown) A list of rest objects.
-
right-items
(unknown) DOCME
-
right-neighbors
(unknown) See
left-neighbors
.-
script-stencil
(pair) A pair
(type . arg)
which acts as an index for looking up aStencil
object.-
separation-item
(layout object) A separation item.
-
shorten
(dimension, in staff space) The amount of space that a stem is shortened. Internally used to distribute beam shortening over stems.
-
side-support-elements
(unknown) The side support, a list of grobs.
-
skyline-distance
(number) The distance between this staff and the next one, as determined by a skyline algorithm.
-
slur
(layout object) A pointer to a
Slur
object.-
spaceable-staves
(unknown) Objects to be spaced during page layout.
-
spacing
(layout object) The spacing spanner governing this section.
-
spacing-wishes
(unknown) List of note spacing or staff spacing objects.
-
staff-symbol
(layout object) The staff symbol grob that we are in.
-
stem
(layout object) A pointer to a
Stem
object.-
stem-info
(pair) A cache of stem parameters.
-
stems
(unknown) A list of stem objects, corresponding to the notes that the arpeggio has to be before.
-
stropha
(boolean) Is this neume a stropha?
-
tie
(layout object) A pointer to a
Tie
object.-
tremolo-flag
(layout object) The tremolo object on a stem.
-
tuplet-number
(layout object) The number for a bracket.
-
tuplets
(unknown) A list of smaller tuplet brackets.
-
use-breve-rest
(boolean) Use breve rests for measures longer than a whole rest.
-
virga
(boolean) Is this neume a virga?
-
x-offset
(dimension, in staff space) Extra horizontal offset for ligature heads.
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