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2.1.5 DrumStaff

Handles typesetting for percussion.

This context also accepts commands for the following context(s):

Staff.

This context creates the following layout object(s):

BarLine, BassFigureAlignmentPositioning, BassFigureAlignment, BassFigureBracket, BassFigureContinuation, BassFigureLine, BassFigure, Clef, DotColumn, InstrumentName, LedgerLineSpanner, NoteCollision, OctavateEight, RestCollision, ScriptRow, SostenutoPedalLineSpanner, StaffSpacing, StaffSymbol, SustainPedalLineSpanner, TimeSignature, UnaCordaPedalLineSpanner and VerticalAxisGroup.

This context sets the following properties:

Context DrumStaff can contain DrumVoice and CueVoice.

This context is built from the following engraver(s):

Script_row_engraver
Determine order in horizontal side position elements.

This engraver creates the following layout object(s):

ScriptRow.

Figured_bass_position_engraver
Position figured bass alignments over notes.

This engraver creates the following layout object(s):

BassFigureAlignmentPositioning.

Figured_bass_engraver
Make figured bass numbers.

Music types accepted:

bass-figure-event and rest-event

Properties (read)

figuredBassAlterationDirection (direction)
Where to put alterations relative to the main figure.
figuredBassCenterContinuations (boolean)
Whether to vertically center pairs of extender lines. This does not work with three or more lines.
figuredBassFormatter (procedure)
A routine generating a markup for a bass figure.
implicitBassFigures (list)
A list of bass figures that are not printed as numbers, but only as extender lines.
useBassFigureExtenders (boolean)
Whether to use extender lines for repeated bass figures.
ignoreFiguredBassRest (boolean)
Don't swallow rest events.

This engraver creates the following layout object(s):

BassFigure, BassFigureAlignment, BassFigureBracket, BassFigureContinuation and BassFigureLine.

Axis_group_engraver
Group all objects created in this context in a VerticalAxisGroup spanner.

Properties (read)

currentCommandColumn (layout object)
Grob that is X-parent to all current breakable (clef, key signature, etc.) items.

This engraver creates the following layout object(s):

VerticalAxisGroup.

Instrument_name_engraver
Create a system start text for instrument or vocal names.

Properties (read)

currentCommandColumn (layout object)
Grob that is X-parent to all current breakable (clef, key signature, etc.) items.
shortInstrumentName (markup)
See instrument.
instrumentName (markup)
The name to print left of a staff. The instrument property labels the staff in the first system, and the instr property labels following lines.
shortVocalName (markup)
Name of a vocal line, short version.
vocalName (markup)
Name of a vocal line.

This engraver creates the following layout object(s):

InstrumentName.

Piano_pedal_align_engraver
Align piano pedal symbols and brackets.

Properties (read)

currentCommandColumn (layout object)
Grob that is X-parent to all current breakable (clef, key signature, etc.) items.

This engraver creates the following layout object(s):

SostenutoPedalLineSpanner, SustainPedalLineSpanner and UnaCordaPedalLineSpanner.

Rest_collision_engraver
Handle collisions of rests.

This engraver creates the following layout object(s):

RestCollision.

Collision_engraver
Collect NoteColumns, and as soon as there are two or more, put them in a NoteCollision object.

This engraver creates the following layout object(s):

NoteCollision.

Staff_symbol_engraver
Create the constellation of five (default) staff lines.

Music types accepted:

staff-span-event

This engraver creates the following layout object(s):

StaffSymbol.

Ledger_line_engraver
Create the spanner to draw ledger lines, and notices objects that need ledger lines.

This engraver creates the following layout object(s):

LedgerLineSpanner.

Time_signature_engraver
Create a TimeSignature whenever timeSignatureFraction changes.

Properties (read)

implicitTimeSignatureVisibility (vector)
break visibility for the default time signature.
timeSignatureFraction (pair of numbers)
A pair of numbers, signifying the time signature. For example, #'(4 . 4) is a 4/4 time signature.

This engraver creates the following layout object(s):

TimeSignature.

Clef_engraver
Determine and set reference point for pitches.

Properties (read)

clefGlyph (string)
Name of the symbol within the music font.
clefOctavation (integer)
Add this much extra octavation. Values of 7 and -7 are common.
clefPosition (number)
Where should the center of the clef symbol go, measured in half staff spaces from the center of the staff.
explicitClefVisibility (vector)
break-visibility’ function for clef changes.
forceClef (boolean)
Show clef symbol, even if it has not changed. Only active for the first clef after the property is set, not for the full staff.

This engraver creates the following layout object(s):

Clef and OctavateEight.

Staff_collecting_engraver
Maintain the stavesFound variable.

Properties (read)

stavesFound (list of grobs)
A list of all staff-symbols found.
Properties (write)
stavesFound (list of grobs)
A list of all staff-symbols found.

Dot_column_engraver
Engrave dots on dotted notes shifted to the right of the note. If omitted, then dots appear on top of the notes.

This engraver creates the following layout object(s):

DotColumn.

Separating_line_group_engraver
Generate objects for computing spacing parameters.

Properties (read)

createSpacing (boolean)
Create StaffSpacing objects? Should be set for staves.
Properties (write)
hasStaffSpacing (boolean)
True if the current CommandColumn contains items that will affect spacing.

This engraver creates the following layout object(s):

StaffSpacing.

Font_size_engraver
Put fontSize into font-size grob property.

Properties (read)

fontSize (number)
The relative size of all grobs in a context.

Bar_engraver
Create barlines. This engraver is controlled through the whichBar property. If it has no bar line to create, it will forbid a linebreak at this point.

Properties (read)

whichBar (string)
This property is read to determine what type of bar line to create.

Example:

                         \set Staff.whichBar = "|:"

This will create a start-repeat bar in this staff only. Valid values are described in bar-line-interface.

Properties (write)
forbidBreak (boolean)
If set to ##t, prevent a line break at this point.

This engraver creates the following layout object(s):

BarLine.

Output_property_engraver
Apply a procedure to any grob acknowledged.

Music types accepted:

apply-output-event

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