+\version "2.1.21"
+
\header { texidoc=" You can write molecule callbacks in Scheme, thus
providing custom glyphs for notation elements. A simple example is
adding parentheses to existing molecule callbacks.
The parenthesized beam is less successful due to implementation of the
Beam. The note head is also rather naive, since the extent of the
parens are also not seen by accidentals.
-";
+"
- }
+}
#(define (parenthesize-callback callback)
"Construct a function that will do CALLBACK and add parentheses.
Example usage:
- \property Voice.NoteHead \\override #'molecule-callback
+ \\property Voice.NoteHead \\override #'print-function
=
- #(parenthesize-callback Note_head::brew_molecule)
+ #(parenthesize-callback Note_head::print)
"
"
(let* (
- (fn (ly-get-default-font grob))
- (pclose (ly-find-glyph-by-name fn "accidentals-)"))
- (popen (ly-find-glyph-by-name fn "accidentals-("))
+ (fn (ly:get-default-font grob))
+ (pclose (ly:find-glyph-by-name fn "accidentals-rightparen"))
+ (popen (ly:find-glyph-by-name fn "accidentals-leftparen"))
(subject (callback grob))
- ;; remember old size
- (subject-dims (ly-get-molecule-extent subject 0))
- )
+ ; remember old size
+ (subject-dim-x (ly:molecule-get-extent subject 0))
+ (subject-dim-y (ly:molecule-get-extent subject 1))
+ )
- ;; add parens
+ ; add parens
(set! subject
- (ly-combine-molecule-at-edge
- (ly-combine-molecule-at-edge subject 0 1 pclose 0.2)
+ (ly:molecule-combine-at-edge
+ (ly:molecule-combine-at-edge subject 0 1 pclose 0.2)
0 -1 popen 0.2))
- ;; revert old size.
- (ly-set-molecule-extent! subject 0 subject-dims)
+ ; revert old size.
+ (ly:molecule-set-extent! subject 0 subject-dim-x)
+ (ly:molecule-set-extent! subject 1 subject-dim-y)
subject
)
)
\score {
\notes \relative c' { c4 e
- \property Voice.NoteHead \override #'molecule-callback
+ \property Voice.NoteHead \override #'print-function
=
- #(parenthesize-callback Note_head::brew_molecule)
+ #(parenthesize-callback Note_head::print)
g bes
- \property Voice.NoteHead \revert #'molecule-callback
- \property Voice.Beam \override #'molecule-callback
+ \property Voice.NoteHead \revert #'print-function
+ \property Voice.Beam \override #'print-function
=
- #(parenthesize-callback Beam::brew_molecule)
+ #(parenthesize-callback Beam::print)
a8 gis8 a2.
}
- \paper { linewidth = -1.; }
+ \paper { raggedright = ##t}
}
+