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3.2.11 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.

The list of allowed glyphs and predefined bar lines can be found in scm/bar-line.scm.

gap is used for the gaps in dashed bar lines.

Full-height bar lines are normally squared to meet the outer staff lines, but their ends may be rounded by setting the rounded property. The ends of short and tick bars are always rounded.

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.

In combination with (span) bar lines, it is a string resembling the bar line appearance in ASCII form.

glyph-left (string)

The glyph value to use at the end of the line when the line is broken. #f indicates that no glyph should be visible; otherwise the value must be a string.

glyph-name (string)

The glyph name within the font.

In the context of (span) bar lines or clefs, glyph-name represents a processed form of glyph, where decisions about line breaking, etc., are already taken.

glyph-right (string)

The glyph value to use at the beginning of the line when the line is broken. #f indicates that no glyph should be visible; otherwise the value must be a string.

hair-thickness (number)

Thickness of the thin line in a bar line, expressed as a multiple of the default staff-line thickness (i.e., the visual output is not influenced by changes to Staff.StaffSymbol.thickness).

kern (dimension, in staff space)

The space between individual elements in any compound bar line, expressed as a multiple of the default staff-line thickness (i.e., the visual output is not influenced by changes to Staff.StaffSymbol.thickness).

right-justified (boolean)

Used for BarLines to right-align them. Usually the extent of a BarLine has some positive value to the right. If this property is set to #t, BarLine.stencil is translated to the left by this value. Needs to be set at Score or StaffGroup level. As a result all BarLines of said Score or StaffGroup are right-justified.

rounded (boolean)

Decide whether lines should be drawn rounded or not.

segno-kern (number)

The space between the two thin lines of the segno bar line symbol, expressed as a multiple of the default staff-line thickness (i.e., the visual output is not influenced by changes to Staff.StaffSymbol.thickness).

short-bar-extent (pair of numbers)

The Y-extent of a short bar line. The default is half the normal bar extent, rounded up to an integer number of staff spaces.

thick-thickness (number)

Thickness of the thick line in a bar line, expressed as a multiple of the default staff-line thickness (i.e., the visual output is not influenced by changes to Staff.StaffSymbol.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.