3.2.9 bar-line-interface

Print a special bar symbol. It replaces the regular bar symbol with a special symbol. The argument bartype is a string which specifies the kind of bar line to print. Options are |, :|, |:, :|:, :|.|:, :|.:, ., ||, |., .|, .|., |.|, :, dashed, ' and S.

These produce, respectively, a normal bar line, a right repeat, a left repeat, a thick double repeat, a thin-thick-thin double repeat, a thin-thick double repeat, a thick bar, a double bar, a start bar, an end bar, a thick double bar, a thin-thick-thin bar, a dotted bar, a dashed bar, a tick as bar line and a segno bar.

In addition, there is an option ||: which is equivalent to |: except at line breaks, where it produces a double bar (||) at the end of the line and a repeat sign (|:) at the beginning of the new line.

For segno, S produces a segno sign except at line breaks, where it produces a double bar (||) at the end of the line and a segno sign at the beginning of the new line. |S is equivalent to S but produces a simple bar line (|) instead of a double bar line (||) at line breaks. S| produces the segno sign at line breaks and starts the following line without special bar lines.

S|: and :|S are used for repeat/segno combinations that are separated at line breaks. Alternatively, .S|: and :|S. may be used which combine repeat signs and segno at the same line in case of a line break. :|S|: is a combination of a left repeat (:|), a segno (S) and a right repeat |: which splits before the segno at line breaks; :|S.|: splits after the segno sign.

If bartype is set to empty then nothing is printed, but a line break is allowed at that spot.

gap is used for the gaps in dashed bar lines.

User settable properties:

allow-span-bar (boolean)

If false, no inter-staff bar line will be created below this bar line.

bar-extent (pair of numbers)

The Y-extent of the actual bar line. This may differ from Y-extent because it does not include the dots in a repeat bar line.

gap (dimension, in staff space)

Size of a gap in a variable symbol.

glyph (string)

A string determining what ‘style’ of glyph is typeset. Valid choices depend on the function that is reading this property.

glyph-name (string)

The glyph name within the font.

hair-thickness (number)

Thickness of the thin line in a bar line.

kern (dimension, in staff space)

Amount of extra white space to add. For bar lines, this is the amount of space after a thick line.

thin-kern (number)

The space after a hair-line in a bar line.

thick-thickness (number)

Bar line thickness, measured in line-thickness.

Internal properties:

has-span-bar (pair)

A pair of grobs containing the span bars to be drawn below and above the staff. If no span bar is in a position, the respective element is set to #f.

This grob interface is used in the following graphical object(s): BarLine and SpanBar.

Internals Reference