DrumStaff

Handles typesetting for percussion.

This context is also known as:

Staff

This context creates the following layout objects: BarLine, Clef, DotColumn, InstrumentName, NoteCollision, OctavateEight, RestCollision, SeparatingGroupSpanner, SeparationItem, StaffSpacing, StaffSymbol, TimeSignature, 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 instr to '()
• Set translator property instrument to '()
• Set translator property createSpacing to #t
• Set translator property localKeySignature to '()
• Set translator property verticalExtent to #f
• Set translator property extraVerticalExtent to #f
• Set translator property minimumVerticalExtent to '(-6 . 6)

Context DrumStaff can contain DrumVoice

This context is built from the following engravers:

Engraver_group_engraver

A group of engravers taken together

Instrument_name_engraver

Prints the name of the instrument (specified by Staff.instrument and Staff.instr) at the left of the staff.

Properties (read)

instr (markup)

See instrument

instrument (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.

This engraver creates the following layout objects: InstrumentName.

Rest_collision_engraver

Handles collisions of rests.

This engraver creates the following layout objects: RestCollision.

Collision_engraver

This engraver creates the following layout objects: NoteCollision.

Staff_symbol_engraver

Create the constellation of five (default) staff lines.

This engraver creates the following layout objects: StaffSymbol.

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)

explicitClefVisibility (procedure)

break-visibility function for clef changes.

clefOctavation (integer)

Add this much extra octavation. Values of 7 and -7 are common.

middleCPosition (number)

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

clefGlyph (string)

Name of the symbol within the music font.

clefPosition (number)

Where should the center of the clef symbol go, measured in half staff spaces from the center of the staff.

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)

stavesFound (list of grobs)

list of all staff-symbols found.

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.

repeatCommands (list)

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

This engraver creates the following layout objects: VoltaBracket.

Font_size_engraver

Puts fontSize into font-relative-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.

This engraver creates the following layout objects: BarLine.

Output_property_engraver

Interpret Music of Output_property type, and apply a function to any Graphic objects that satisfies the predicate.

Music types accepted: layout-instruction

Axis_group_engraver

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

Properties (read)

extraVerticalExtent (pair of numbers)

extra vertical extent, same format as minimumVerticalExtent

minimumVerticalExtent (pair of numbers)

minimum vertical extent, same format as verticalExtent

verticalExtent (pair of numbers)

Hard coded vertical extent. The format is a pair of dimensions, for example, this sets the sizes of a staff to 10 (5+5) staffspaces high.

               \set Staff.verticalExtent = #'(-5.0 . 5.0)
               

This does not work for Voice or any other context that doesn't form a vertical group.

This engraver creates the following layout objects: VerticalAxisGroup.

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