2.2.50 Key_engraver

Engrave a key signature.

Music types accepted:

key-change-event

Properties (read)

createKeyOnClefChange (boolean)

Print a key signature whenever the clef is changed.

explicitKeySignatureVisibility (vector)

break-visibility’ function for explicit key changes. ‘\override’ of the break-visibility property will set the visibility for normal (i.e., at the start of the line) key signatures.

extraNatural (boolean)

Whether to typeset an extra natural sign before accidentals changing from a non-natural to another non-natural.

keyAlterationOrder (list)

An alist that defines in what order alterations should be printed. The format is (step . alter), where step is a number from 0 to 6 and alter from -2 (sharp) to 2 (flat).

keySignature (list)

The current key signature. This is an alist containing (step . alter) or ((octave . step) . alter), where step is a number in the range 0 to 6 and alter a fraction, denoting alteration. For alterations, use symbols, e.g. keySignature = #`((6 . ,FLAT)).

lastKeySignature (list)

Last key signature before a key signature change.

printKeyCancellation (boolean)

Print restoration alterations before a key signature change.

Properties (write)

keySignature (list)

The current key signature. This is an alist containing (step . alter) or ((octave . step) . alter), where step is a number in the range 0 to 6 and alter a fraction, denoting alteration. For alterations, use symbols, e.g. keySignature = #`((6 . ,FLAT)).

lastKeySignature (list)

Last key signature before a key signature change.

tonic (pitch)

The tonic of the current scale.

This engraver creates the following layout object(s):

KeySignature.

Key_engraver is part of the following context(s): GregorianTranscriptionStaff, MensuralStaff, Staff and VaticanaStaff.


Internals Reference