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2.1.29 TabStaff

Context for generating tablature. It accepts only TabVoice contexts and handles the line spacing, the tablature clef etc. properly.

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

Staff.

This context creates the following layout object(s):

BarLine, BassFigure, BassFigureAlignment, BassFigureAlignmentPositioning, BassFigureBracket, BassFigureContinuation, BassFigureLine, Clef, ClefModifier, CueClef, CueEndClef, DotColumn, FingeringColumn, InstrumentName, LedgerLineSpanner, NoteCollision, PianoPedalBracket, RestCollision, ScriptRow, SostenutoPedal, SostenutoPedalLineSpanner, StaffSpacing, StaffSymbol, SustainPedal, SustainPedalLineSpanner, TimeSignature, UnaCordaPedal, UnaCordaPedalLineSpanner and VerticalAxisGroup.

This context sets the following properties:

This is not a ‘Bottom’ context; search for such a one will commence after creating an implicit context of type TabVoice.

Context TabStaff can contain CueVoice, NullVoice and TabVoice.

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

Axis_group_engraver

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

Properties (read)

currentCommandColumn (graphical (layout) object)

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

hasAxisGroup (boolean)

True if the current context is contained in an axis group.

keepAliveInterfaces (list)

A list of symbols, signifying grob interfaces that are worth keeping a staff with remove-empty set around for.

Properties (write)

hasAxisGroup (boolean)

True if the current context is contained in an axis group.

This engraver creates the following layout object(s):

VerticalAxisGroup.

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. This engraver is required to trigger the creation of clefs at the start of systems.

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 ‘scm/bar-line.scm’.

Properties (write)

forbidBreak (boolean)

If set to #t, prevent a line break at this point.

This engraver creates the following layout object(s):

BarLine.

Clef_engraver

Determine and set reference point for pitches.

Properties (read)

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.

clefTransposition (integer)

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

clefTranspositionStyle (symbol)

Determines the way the ClefModifier grob is displayed. Possible values are ‘default’, ‘parenthesized’ and ‘bracketed’.

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 ClefModifier.

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.

Cue_clef_engraver

Determine and set reference point for pitches in cued voices.

Properties (read)

clefTransposition (integer)

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

cueClefGlyph (string)

Name of the symbol within the music font.

cueClefPosition (number)

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

cueClefTransposition (integer)

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

cueClefTranspositionStyle (symbol)

Determines the way the ClefModifier grob is displayed. Possible values are ‘default’, ‘parenthesized’ and ‘bracketed’.

explicitCueClefVisibility (vector)

‘break-visibility’ function for cue clef changes.

middleCCuePosition (number)

The position of the middle C, as determined only by the clef of the cue notes. This can be calculated by looking at cueClefPosition and cueClefGlyph.

This engraver creates the following layout object(s):

ClefModifier, CueClef and CueEndClef.

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.

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.

ignoreFiguredBassRest (boolean)

Don’t swallow rest events.

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.

This engraver creates the following layout object(s):

BassFigure, BassFigureAlignment, BassFigureBracket, BassFigureContinuation and BassFigureLine.

Figured_bass_position_engraver

Position figured bass alignments over notes.

This engraver creates the following layout object(s):

BassFigureAlignmentPositioning.

Fingering_column_engraver

Find potentially colliding scripts and put them into a FingeringColumn object; that will fix the collisions.

This engraver creates the following layout object(s):

FingeringColumn.

Font_size_engraver

Put fontSize into font-size grob property.

Properties (read)

fontSize (number)

The relative size of all grobs in a context.

Grob_pq_engraver

Administrate when certain grobs (e.g., note heads) stop playing.

Properties (read)

busyGrobs (list)

A queue of (end-moment . grob) cons cells. This is for internal (C++) use only. This property contains the grobs which are still busy (e.g. note heads, spanners, etc.).

Properties (write)

busyGrobs (list)

A queue of (end-moment . grob) cons cells. This is for internal (C++) use only. This property contains the grobs which are still busy (e.g. note heads, spanners, etc.).

Instrument_name_engraver

Create a system start text for instrument or vocal names.

Properties (read)

currentCommandColumn (graphical (layout) object)

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

instrumentName (markup)

The name to print left of a staff. The instrumentName property labels the staff in the first system, and the shortInstrumentName property labels following lines.

shortInstrumentName (markup)

See instrumentName.

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.

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.

Piano_pedal_align_engraver

Align piano pedal symbols and brackets.

Properties (read)

currentCommandColumn (graphical (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.

Piano_pedal_engraver

Engrave piano pedal symbols and brackets.

Music types accepted:

sostenuto-event, sustain-event and una-corda-event

Properties (read)

currentCommandColumn (graphical (layout) object)

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

pedalSostenutoStrings (list)

See pedalSustainStrings.

pedalSostenutoStyle (symbol)

See pedalSustainStyle.

pedalSustainStrings (list)

A list of strings to print for sustain-pedal. Format is (up updown down), where each of the three is the string to print when this is done with the pedal.

pedalSustainStyle (symbol)

A symbol that indicates how to print sustain pedals: text, bracket or mixed (both).

pedalUnaCordaStrings (list)

See pedalSustainStrings.

pedalUnaCordaStyle (symbol)

See pedalSustainStyle.

This engraver creates the following layout object(s):

PianoPedalBracket, SostenutoPedal, SustainPedal and UnaCordaPedal.

Pure_from_neighbor_engraver

Coordinates items that get their pure heights from their neighbors.

Rest_collision_engraver

Handle collisions of rests.

Properties (read)

busyGrobs (list)

A queue of (end-moment . grob) cons cells. This is for internal (C++) use only. This property contains the grobs which are still busy (e.g. note heads, spanners, etc.).

This engraver creates the following layout object(s):

RestCollision.

Script_row_engraver

Determine order in horizontal side position elements.

This engraver creates the following layout object(s):

ScriptRow.

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.

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.

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.

Tab_staff_symbol_engraver

Create a tablature staff symbol, but look at stringTunings for the number of lines.

Properties (read)

stringTunings (list)

The tablature strings tuning. It is a list of the pitches of each string (starting with the lowest numbered one).

This engraver creates the following layout object(s):

StaffSymbol.

Time_signature_engraver

Create a TimeSignature whenever timeSignatureFraction changes.

Music types accepted:

time-signature-event

Properties (read)

initialTimeSignatureVisibility (vector)

break visibility for the initial time signature.

partialBusy (boolean)

Signal that \partial acts at the current timestep.

timeSignatureFraction (fraction, as pair)

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.

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