Translation of GIT committish: FILL-IN-HEAD-COMMITTISH
When revising a translation, copy the HEAD committish of the
- version that you are working on. See TRANSLATION for details.
+ version that you are working on. For details, see the Contributors'
+ Guide, node Updating translation committishes..
@end ignore
@c \version "2.12.0"
@node Score - the master of all contexts
@unnumberedsubsubsec Score - the master of all contexts
-This is the top level notation context. No other context can
-contain a Score context. By default the Score context handles
+This is the top level notation context. No other context can
+contain a Score context. By default the Score context handles
the administration of time signatures and makes sure that items
such as clefs, time signatures, and key-signatures are aligned
across staves.
@strong{@emph{StaffGroup}}
Groups staves while adding a bracket on the left side, grouping
-the staves together. The bar lines of the contained staves are
+the staves together. The bar lines of the contained staves are
connected vertically. @code{StaffGroup} only consists of a collection
of staves, with a bracket in front and spanning bar lines.
@node The set command
-@subsection The @code{\set} command
+@subsection The @code{@bs{}set} command
@cindex properties
@funindex \set
@qq{accepts} list can be changed, see @ref{Aligning contexts}.
@seealso
-Learning Manual:
+Usage Manual:
@rprogram{An extra staff appears}.
their appearance and behaviour. Some of these properties are common
to all spanners; others are restricted to a sub-set of the spanners.
-All spanners support the @code{spanner-interface}. A few, esentially
+All spanners support the @code{spanner-interface}. A few, essentially
those that draw a straight line between the two objects, support in
addition the @code{line-spanner-interface}.
@end lilypond
This property is not effective for all spanners. For example,
-seting it to @code{#t} has no effect on slurs or phrasing slurs
+setting it to @code{#t} has no effect on slurs or phrasing slurs
or on other spanners for which terminating on the bar line would
not be meaningful.
on-the-fly for every graphic object, but it is possible to
override these:
-@c FIXME Complete
+@c TODO Complete
@lilypond[relative=2,ragged-right,verbatim,fragment]
e2 \glissando f
\once \override Glissando #'(bound-details right Y) = #-2
Notation Reference:
@ref{Explaining the Internals Reference},
-@ref{Modifying properties},
+@ref{Modifying properties}.
Installed Files:
@file{scm/@/define@/-grobs@/.scm}.
@node Aligning objects
@subsection Aligning objects
-Graphical objects which support the @code{self-alignment-interface} and/or
-the @code{side-position-interface} can be
-aligned to a previously placed object in a variety of ways. For a list of these objects, see
+Graphical objects which support the @code{self-alignment-interface}
+and/or the @code{side-position-interface} can be aligned to a previously
+placed object in a variety of ways. For a list of these objects, see
@rinternals{self-alignment-interface} and @rinternals{side-position-interface}.
All graphical objects have a reference point, a horizontal extent and a
vertical extent. The horizontal extent is a pair of numbers
giving the displacements from the reference point of the left and
-right edges, displacements to the left being negative. The
-vertical extent is a pair of numbers giving the displacement from
-the reference point to the bottom and top edges, displacements down
-being negative.
+right edges, displacements to the left being negative. The vertical
+extent is a pair of numbers giving the displacement from the reference
+point to the bottom and top edges, displacements down being negative.
An object's position on a staff is given by the values of the
@code{X-offset} and @code{Y-offset} properties. The value of
-@code{X-offset} gives the displacement from the x coordinate of
+@code{X-offset} gives the displacement from the X coordinate of
the reference point of the parent object, and the value of
@code{Y-offset} gives the displacement from the center line of the
-staff. The values of @code{X-offset} and
-@code{Y-offset} may be set directly or may be set to be calculated
-by procedures in order to achieve alignment with the parent object
-in several ways.
+staff. The values of @code{X-offset} and @code{Y-offset} may
+be set directly or may be set to be calculated by procedures in order
+to achieve alignment with the parent object.
@warning{Many objects have special positioning considerations which
cause any setting of @code{X-offset} or @code{Y-offset} to be
ignored or modified, even though the object supports the
-@code{self-alignment-interface}.}
+@code{self-alignment-interface}. Overriding the @code{X-offset}
+or @code{Y-offset} properties to a fixed value causes the respective
+@code{self-alignment} property to be disregarded.}
+
+For example, an accidental can be repositioned vertically by setting
+@code{Y-offset} but any changes to @code{X-offset} have no effect.
-For example, an accidental can be repositioned
-vertically by setting @code{Y-offset} but any changes to
-@code{X-offset} have no effect.
+Rehearsal marks may be aligned with breakable objects such as bar
+lines, clef symbols, time signature symbols and key signatures. There
+are special properties to be found in the @code{break-aligned-interface}
+for positioning rehearsal marks on such objects.
-Rehearsal marks may be aligned with
-breakable objects such as bar lines, clef symbols, time signature
-symbols and key signatures. There are special properties to be
-found in the @code{break-aligned-interface} for positioning rehearsal
-marks on such objects.
+@seealso
+@ref{Using the break-alignable-interface},
+@rextend{Callback functions}.
@menu
-* Setting @code{X-offset} and @code{Y-offset} directly::
-* Using the @code{side-position-interface}::
-* Using the @code{self-alignment-interface}::
-* Using the @code{break-alignable-interface}::
+* Setting X-offset and Y-offset directly::
+* Using the side-position-interface::
+* Using the self-alignment-interface::
+* Using the break-alignable-interface::
@end menu
-@node Setting @code{X-offset} and @code{Y-offset} directly
+@node Setting X-offset and Y-offset directly
@unnumberedsubsubsec Setting @code{X-offset} and @code{Y-offset} directly
Numerical values may be given to the @code{X-offset} and @code{Y-offset}
@c TODO write more
-@node Using the @code{side-position-interface}
+@node Using the side-position-interface
@unnumberedsubsubsec Using the @code{side-position-interface}
An object which supports the @code{side-position-interface} can be
@c TODO Add examples
-@node Using the @code{self-alignment-interface}
+@node Using the self-alignment-interface
@unnumberedsubsubsec Using the @code{self-alignment-interface}
@emph{Self-aligning objects horizontally}
@c TODO The align-interface, BassFigureAlignment and VerticalAlignment
-@node Using the @code{break-alignable-interface}
+@node Using the break-alignable-interface
@unnumberedsubsubsec Using the @code{break-alignable-interface}
@cindex align to objects
centered above the object:
@lilypond[verbatim,quote,relative=1]
-e1
-% the RehearsalMark will be centered above the Clef
+% The rehearsal mark will be centered above the Clef
\override Score.RehearsalMark #'break-align-symbols = #'(clef)
\key a \major
\clef treble
\mark "↓"
-e
-% the RehearsalMark will be centered above the TimeSignature
+e1
+% The rehearsal mark will be centered above the Time Signature
\override Score.RehearsalMark #'break-align-symbols = #'(time-signature)
\key a \major
\clef treble
\time 3/4
\mark "↓"
e2.
+% The rehearsal mark will be centered above the Breath Mark
+\override Score.RehearsalMark #'break-align-symbols = #'(breathing-sign)
+\key a \major
+\clef treble
+\time 4/4
+e1
+\breathe
+\mark "↓"
@end lilypond
A list of possible target alignment objects may be specified. If
line would be.
@lilypond[verbatim,quote,relative=1]
-e1
-% the RehearsalMark will be centered above the Key Signature
+% The rehearsal mark will be centered above the Key Signature
\override Score.RehearsalMark #'break-align-symbols = #'(key-signature clef)
\key a \major
\clef treble
\mark "↓"
-e
-% the RehearsalMark will be centered above the Clef
+e1
+% The rehearsal mark will be centered above the Clef
\set Staff.explicitKeySignatureVisibility = #all-invisible
\override Score.RehearsalMark #'break-align-symbols = #'(key-signature clef)
-\key a \minor
+\key a \major
\clef bass
\mark "↓"
-e,
+gis,,1
+% The rehearsal mark will be centered above the Bar Line
+\set Staff.explicitKeySignatureVisibility = #all-invisible
+\set Staff.explicitClefVisibility = #all-invisible
+\override Score.RehearsalMark #'break-align-symbols = #'(key-signature clef)
+\key a \major
+\clef treble
+\mark "↓"
+e''1
@end lilypond
The alignment of the rehearsal mark relative to the notation object
multiple staves, this setting should be done for all the staves.
@lilypond[verbatim,quote,relative=1]
-% The RehearsalMark will be centered above the KeySignature
+% The RehearsalMark will be centered above the Key Signature
\override Score.RehearsalMark #'break-align-symbols = #'(key-signature)
\key a \major
\clef treble
\time 4/4
\mark "↓"
e1
-% The RehearsalMark will be aligned with the left edge of the KeySignature
+% The RehearsalMark will be aligned with the left edge of the Key Signature
\once \override Score.KeySignature #'break-align-anchor-alignment = #LEFT
\mark "↓"
\key a \major
-e
-% The RehearsalMark will be aligned with the right edge of the KeySignature
+e1
+% The RehearsalMark will be aligned with the right edge of the Key Signature
\once \override Score.KeySignature #'break-align-anchor-alignment = #RIGHT
\key a \major
\mark "↓"
-e
+e1
@end lilypond
-The rehearsal mark can also be offset to the right or left of the left edge
-by an arbitrary amount. The units are staff-spaces:
+The rehearsal mark can also be offset to the right or left of the left
+edge by an arbitrary amount. The units are staff-spaces:
@lilypond[verbatim,quote,relative=1]
-% The RehearsalMark will be aligned with the left edge of the KeySignature
+% The RehearsalMark will be aligned with the left edge of the Key Signature
% and then shifted right by 3.5 staff-spaces
\override Score.RehearsalMark #'break-align-symbols = #'(key-signature)
\once \override Score.KeySignature #'break-align-anchor = #3.5
\key a \major
\mark "↓"
-e
-% The RehearsalMark will be aligned with the left edge of the KeySignature
+e1
+% The RehearsalMark will be aligned with the left edge of the Key Signature
% and then shifted left by 2 staff-spaces
\once \override Score.KeySignature #'break-align-anchor = #-2
\key a \major
\mark "↓"
-e
+e1
@end lilypond
@node Vertical grouping of grobs
@subsection Vertical grouping of grobs
-@c FIXME Expand this section
+@c TODO Expand this section
The VerticalAlignment and VerticalAxisGroup grobs work together.
VerticalAxisGroup groups together different grobs like Staff, Lyrics,
It is not possible to modify shapes of ties or slurs by changing
the @code{control-points} property if there are more than one at
the same musical moment, not even by using the @code{\tweak}
-command.
+command. However, the @code{tie-configuration} property of
+@code{TieColumn} can be overridden to set start line and direction
+of ties as required.
@c TODO -- add @seealso, etc. to these subsections
-Where tweaks need to be reused with different music expressions, it
-is often convenient to make the tweak part of a music function.
-In this section, we discuss only @emph{substitution} functions, where
-the object is to substitute a variable into a piece of LilyPond
-input code. Other more complex functions are described in
-@rextend{Music functions}.
+Where tweaks need to be reused with different music expressions,
+it is often convenient to make the tweak part of a @emph{music
+function}. In this section, we discuss only @emph{substitution}
+functions, where the object is to substitute a variable into a
+piece of LilyPond input code. Other more complex functions are
+described in @rextend{Music functions}.
@menu
* Substitution function syntax::
-* Common argument types::
* Substitution function examples::
@end menu
@example
function =
-#(define-music-function (parser location @var{var1} @var{var2}...@var{vari}... )
- (@var{var1-type?} @var{var2-type?}...@var{vari-type?}...)
- #@{
- @emph{...music...}
- #@})
+#(define-music-function
+ (parser location @var{arg1} @var{arg2} @dots{})
+ (@var{type1?} @var{type2?} @dots{})
+ #@{
+ @var{@dots{}music@dots{}}
+ #@})
@end example
@noindent
where
@multitable @columnfractions .33 .66
-@item @var{vari} @tab @var{i}th variable
-@item @var{vari-type?} @tab type of @var{i}th variable
-@item @var{...music...} @tab normal LilyPond input, using
- variables as @code{#$var1}, etc.
-@end multitable
-
-Common variable types are described in @ref{Common argument types}.
-A more complete description of variable types is found in
-@rextend{Music function syntax}.
+@item @code{@var{argN}}
+@tab @var{n}th argument
-The @code{parser} and @code{location} arguments are mandatory,
-and are used in some advanced situations as described in
-@rextend{Music function syntax}. For substitution functions, just be sure
-to include them.
+@item @code{@var{typeN?}}
+@tab a scheme @emph{type predicate} for which @code{@var{argN}}
+must return @code{#t}.
-@seealso
+@item @code{@var{@dots{}music@dots{}}}
+@tab normal LilyPond input, using @code{$} to reference arguments
+(eg. @samp{$arg1}).
+@end multitable
-Notation Reference:
-@ref{Common argument types}.
-Extending LilyPond:
-@rextend{Music function syntax}.
+The @code{parser} and @code{location} arguments are mandatory, and
+are used in some advanced situations as described in the
+@q{Extending} manual (see @rextend{Music functions}). For
+substitution functions, just be sure to include them.
-@node Common argument types
-@subsection Common argument types
+The list of type predicates is also required. Some of the most
+common type predicates used in music functions are:
-In order to allow for error checking, the type of each argument
-that is passed to a music function must be defined. Some of the
-common types of variables are shown in the table below.
+@example
+boolean?
+cheap-list? @emph{(use instead of }@q{list?}@emph{ for faster processing)}
+ly:music?
+markup?
+number?
+pair?
+string?
+symbol?
+@end example
-The following input types may be used as variables in a music
-function. This list is not exhaustive;
-more information about possible variable types
-can be found in @rextend{Music function syntax}.
+@noindent
+For a list of available type predicates, see
+@ref{Predefined type predicates}. User-defined type predicates
+are also allowed.
-@multitable @columnfractions .33 .66
-@headitem Input type @tab @var{vari-type?} notation
-@item Integer @tab @code{integer?}
-@item Float (decimal number) @tab @code{number?}
-@item Text string @tab @code{string?}
-@item Markup @tab @code{markup?}
-@item Music expression @tab @code{ly:music?}
-@item A Scheme pair @tab @code{pair?}
-@end multitable
@seealso
-Extending LilyPond:
-@rextend {Music function syntax}.
+Notation Reference:
+@ref{Predefined type predicates}.
+
+Extending:
+@rextend{Music functions}.
Installed Files:
@file{lily/music-scheme.cc},
-@file{scm/c++.scm}.
+@file{scm/c++.scm},
+@file{scm/lily.scm}.
@node Substitution function examples
@subsection Substitution function examples
-This section introduces some substitution function examples. These
-are not intended to be exhaustive, but rather to demonstrate some
-of the possibilities of simple substitution functions.
+This section introduces some substitution function examples.
+These are not intended to be exhaustive, but rather to demonstrate
+some of the possibilities of simple substitution functions.
In the first example, a function is defined that simplifies
setting the padding of a TextScript:
@lilypond[quote,verbatim,ragged-right]
-padText = #(define-music-function (parser location padding) (number?)
- #{
- \once \override TextScript #'padding = #$padding
- #})
+padText =
+#(define-music-function
+ (parser location padding)
+ (number?)
+ #{
+ \once \override TextScript #'padding = $padding
+ #})
\relative c''' {
c4^"piu mosso" b a b
In addition to numbers, we can use music expressions such
as notes for arguments to music functions:
-@lilypond[quote,verbatim,ragged-right]
-custosNote = #(define-music-function (parser location note)
- (ly:music?)
- #{
- \once \override Voice.NoteHead #'stencil =
- #ly:text-interface::print
- \once \override Voice.NoteHead #'text =
- \markup \musicglyph #"custodes.mensural.u0"
- \once \override Voice.Stem #'stencil = ##f
- $note
- #})
+@c TODO: use a better example (the music argument is redundant).
-{ c' d' e' f' \custosNote g' }
+@lilypond[quote,verbatim,ragged-right]
+custosNote =
+#(define-music-function
+ (parser location note)
+ (ly:music?)
+ #{
+ \once \override Voice.NoteHead #'stencil =
+ #ly:text-interface::print
+ \once \override Voice.NoteHead #'text =
+ \markup \musicglyph #"custodes.mensural.u0"
+ \once \override Voice.Stem #'stencil = ##f
+ $note
+ #})
+
+\relative c' { c4 d e f \custosNote g }
@end lilypond
Substitution functions with multiple arguments can be defined:
@lilypond[quote,verbatim,ragged-right]
-tempoPadded = #(define-music-function (parser location padding tempotext)
- (number? string?)
-#{
- \once \override Score.MetronomeMark #'padding = $padding
- \tempo \markup { \bold $tempotext }
-#})
+tempoPadded =
+#(define-music-function
+ (parser location padding tempotext)
+ (number? string?)
+ #{
+ \once \override Score.MetronomeMark #'padding = $padding
+ \tempo \markup { \bold $tempotext }
+ #})
\relative c'' {
\tempo \markup { "Low tempo" }
@seealso
+TODO: add missing @@ref's here.
projects / lilypond.git / blobdiff