Hi,
On Sun, Aug 30, 2015 at 1:40 PM, David Nalesnik <david.nales...@gmail.com>
wrote:
>
>
> On Sun, Aug 30, 2015 at 11:08 AM, Andrew Bernard <andrew.bern...@gmail.com
> > wrote:
>
>> Greetings All,
>>
>> Not that it is relevant to the OP’s question in any way, but I can’t help
>> noticing out that this didactic example makes copious use of horizontal
>> bracket spanners with centred text on every note - the very thing that I am
>> currently working on. They’re everywhere. :-)
>>
>>
> LilyPond already has the ability to make analysis brackets, which are
> attached to note columns and can nest as in the link (HorizontalBracket).
> I have an old patch for adding text to these that I will finish up and
> post. (I have code for doing this in Scheme, but my approach now is an
> enhancement of the C++ engraver.)
>
The attached file is what I used to use when making form handouts.
David
\version "2.19.25"
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% A function to add labels to analysis brackets. Allows for different text
%% if broken between staves.
%%
%% Use with \tweak. For example: -\tweak #'stencil #(label "antecedent" "ant." "")
%% This will add "antecedent" to the bracket if unbroken (or to the first piece, if
%% broken), "ant." to the first broken piece, and an empty string to the next piece
%% (if there is one). If no "" were specified, all pieces after the first would be
%% labelled "ant."
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#(define (add-label grob text)
;; adapted from LSR snippet, "Center text below hairpin dynamics"
(ly:stencil-aligned-to
(ly:stencil-combine-at-edge
(ly:stencil-aligned-to (ly:horizontal-bracket::print grob) X CENTER)
Y (ly:grob-property grob 'direction)
(ly:stencil-aligned-to (grob-interpret-markup grob (markup text)) X CENTER)
0.2)
X LEFT))
#(define ((label . text) grob)
(let* ((orig (ly:grob-original grob))
(siblings (if (ly:grob? orig)
(ly:spanner-broken-into orig)
'())))
(define (helper text siblings)
;; step through the pieces to find the current one, and modify its stencil
(if (eq? (car siblings) grob)
(add-label grob (car text))
(if (or (null? (cdr siblings))
(null? (cdr text)))
(add-label grob (car text)) ;; if not enough text for pieces, use last given
(helper (cdr text) (cdr siblings)))))
(if (pair? siblings)
(helper text siblings)
(add-label grob (car text)))))
gluck = \relative c'' {
\time 3/4
\key f \major
\override HorizontalBracket.direction = #UP
c4-\tweak stencil #(label "contrasting period" "contrasting period")\startGroup
-\tweak stencil #(label "a" "a" )\startGroup
a8( bes c f)
f4( e d)
c d8( c bes c)
\appoggiatura bes4 a2 g4 \stopGroup
f'8-\tweak stencil #(label "b" "b")\startGroup r a, r d r
c4( e, f)
g8( bes) a4 g8( f)
f2 \stopGroup \stopGroup r4
\bar "||"
}
\score {
\new Staff \gluck
\layout {
\context {
\Voice
\consists "Horizontal_bracket_engraver"
}
}
}
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