DrumStaff

Handles typesetting for percussion.

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

Staff

This context creates the following layout objects:

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

This context sets the following properties:

• Set grob-property staff-padding in Script to 0.75.
• Set translator property clefPosition to 0
• Set translator property clefGlyph to clefs.percussion
• Set translator property shortInstrumentName to '()
• Set translator property instrumentName to '()
• Set translator property ignoreFiguredBassRest to #t
• Set translator property createSpacing to #t
• Set translator property localKeySignature to '()
• Set grob-property minimum-Y-extent in VerticalAxisGroup to '(-4 . 4).

Context DrumStaff can contain DrumVoice and CueVoice

This context is built from the following engravers:

Script_row_engraver

Determine order in horizontal side position elements.

This engraver creates the following layout objects: ScriptRow.

Figured_bass_position_engraver

Position figured bass alignments over notes.

This engraver creates the following layout objects: 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)

Routine generating a markup for a bass figure.

implicitBassFigures (list)

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 objects: 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 objects: VerticalAxisGroup.

Instrument_name_engraver

Creates 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 objects: 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 objects: SostenutoPedalLineSpanner, SustainPedalLineSpanner and UnaCordaPedalLineSpanner.

Rest_collision_engraver

Handles collisions of rests.

This engraver creates the following layout objects: 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 objects: NoteCollision.

Staff_symbol_engraver

Create the constellation of five (default) staff lines.

Music types accepted:

staff-span-event

This engraver creates the following layout objects: StaffSymbol.

Ledger_line_engraver

Creates the spanner to draw ledger lines, and notices objects that need ledger lines

This engraver creates the following layout objects: LedgerLineSpanner.

Time_signature_engraver

Create a TimeSignature whenever timeSignatureFraction changes

This engraver creates the following layout objects: 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.

middleCPosition (number)

Place of the middle C, measured in half staff-spaces. Usually determined by looking at clefPosition and clefGlyph.

This engraver creates the following layout objects: Clef and OctavateEight.

Dot_column_engraver

Engraves 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 objects: DotColumn.

Separating_line_group_engraver

Generates objects for computing spacing parameters.

Properties (read)

createSpacing (boolean)

Create StaffSpacing objects? Should be set for staves.

Properties (write)

breakableSeparationItem (layout object)

The breakable items in this time step, for this staff.

This engraver creates the following layout objects: SeparatingGroupSpanner, SeparationItem and StaffSpacing.

Volta_engraver

Make volta brackets.

Properties (read)

repeatCommands (list)

This property is read to find any command of the form (volta . x), where x is a string or #f

voltaSpannerDuration (moment)

This specifies the maximum duration to use for the brackets printed for \alternative. This can be used to shrink the length of brackets in the situation where one alternative is very large.

stavesFound (list of grobs)

list of all staff-symbols found.

This engraver creates the following layout objects: VoltaBracket.

Font_size_engraver

Puts 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 objects: BarLine.

Output_property_engraver

Apply a procedure to any grob acknowledged.

Music types accepted:

apply-output-event