Re: bracketed passages

[Mats Bengtsson]

After some hacking, I came up with the following solution:

\version "2.8.0"

#(define-markup-command (left-bracket layout props) ()
 "Draw left hand bracket"
 (let* ((th 0.1) ;; todo: take from GROB.
       (width (* 2.5 th)) ;; todo: take from GROB.
       (ext '(-2.8 . 2.8))) ;; todo: take line-count into account.
   (ly:bracket Y ext th width)))

leftBracket = {
\once \override BreathingSign #'text = #(make-left-bracket-markup)
\once \override BreathingSign #'Y-offset = ##f
 % Trick to print it after bar lines and time/key signatures
\once \override BreathingSign #'break-align-symbol = #'custos
\breathe
}

#(define-markup-command (right-bracket layout props) ()
 "Draw right hand bracket"
 (let* ((th 0.1) ;; todo: take from GROB.
       (width (* 2.5 th)) ;; todo: take from GROB.
       (ext '(-2.8 . 2.8))) ;; todo: take line-count into account.
   (ly:bracket Y ext th (- width))))

rightBracket = {
\once \override BreathingSign #'text = #(make-right-bracket-markup)
\once \override BreathingSign #'Y-offset = ##f
\breathe
}


\relative c'{
 c d e f | \leftBracket g f e d \rightBracket c d e f g1
}

\layout{ragged-right = ##t }

You can modify the thickness (the number after "th") vertical extent (the
pair of numbers after "ext") and the width of the bracket edges (currently
2.5 * th).

  /Mats

Monk Panteleimon wrote:
> Dear Lilypond users,
>
> I would like to place brackets around passages of music -- not around 
> arpeggiated chords or notes in chords or anything like that, but a 
> right-pointing bracket at the beginning of a passage, spanning the whole 
> staff or system, and likewise a left-pointing one at the end of the passage. 
> This is to indicate that the passage in question ( a long melisma called a 
> "fita") can be either sung or omitted at the discretion of a chanter or 
> director. There is a not-very-attractive example of this kind of thing at the 
> end of the 7th system in the piece of music posted here:
>
> http://www.rocmconference.org/music/V4-12_Lord-I-have-cried_Both-now.pdf
>
> Whoever engraved this piece in the early 20th c. used parentheses, but I would 
> rather used something that looks close to a SystemStartBracket, but maybe 
> thinner, and of course reversible for the close of the fita. 
> * I have already tried doing this with markups, * using both parentheses and 
> brackets. The problem with this method (besides all the trial-and-error 
> tweaking of sizes and offsets) is that by the time the things are big enough 
> to embrace the system, they are awfully fat and unsightly. 
> Any suggestions will be greatly appreciated.
>
> Fr. P
>
>
> _______________________________________________
> lilypond-user mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/lilypond-user
>   

--
=============================================
        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe
=============================================