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List:       lilypond-user
Subject:    Re: changing a snippet in the LSR
From:       Marc Hohl <marc () hohlart ! de>
Date:       2009-10-31 20:55:32
Message-ID: 4AECA444.4080600 () hohlart ! de
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Marc Hohl schrieb:
> Hello,
>
> how can a snippet in the LSR be corrected?
>
> http://lsr.dsi.unimi.it/LSR/Snippet?id=633
>
> is not perfect, it should look like
>
> ---[snip]---
>
> %LSR Contributed by Frederico Bruni
>
> %% Hide fret number: useful to draw slide into/from a casual point of
> %% the fretboard.
> hideFretNumber = { \once \override TabNoteHead #'transparent = ##t 
>                   \once \override NoteHead #'transparent = ##t 
>                   \once \override Stem #'transparent = ##t
>                   \once \override NoteHead #'no-ledgers = ##t %<--- NEW
> }
Oh, I forgot: it would look even better (since the LSR is on 2.12) with 
the following
additions:

% the next definition and the layout block are necessary only for 
versions <2.13.6:

#(define-public (glissando::calc-tab-extra-dy grob)
  (let* ((original (ly:grob-original grob))
         (left-bound (ly:spanner-bound original LEFT))
         (right-bound (ly:spanner-bound original RIGHT))
         (left-pitch (ly:event-property (event-cause left-bound) 'pitch))
         (right-pitch (ly:event-property (event-cause right-bound) 'pitch)))

    (if (< (ly:pitch-semitones right-pitch) (ly:pitch-semitones left-pitch))
        -0.75
         0.75)))

\layout {
  \context {
    \TabVoice
    \override Glissando #'extra-dy = #glissando::calc-tab-extra-dy
  }
}
>
> music= \relative c' {
>      \grace { \hideFretNumber d8\2 \glissando s2 } g2\2
>      \grace { \hideFretNumber g8\2 \glissando s2 } d2 |
>           \grace { \hideFretNumber c,8 \glissando s } f4\5^\markup 
> \tiny "Slide into"
>      \grace { \hideFretNumber f8 \glissando s } a4\4
>      \grace { \hideFretNumber e'8\3 \glissando s } b4\3^\markup \tiny 
> "Slide from"
>      \grace { \hideFretNumber b'8 \glissando s2 } g4 |
>    }
>
> \score {
>  <<
>    \new Staff {
>      \clef "G_8" % <--- NEW
>      \music    }
>    \new TabStaff {
>      \music    }
>  >>
> }
>
> ---[snip]---
>
> otherwise the tablature won't fit to the displayed notes; moreover, 
> the ledger lines
> of the hidden notes are still visible (ok, if the clef is G_8, then 
> the ledger lines won't be there anymore, but for sake of maximum 
> usability, the
> snippet should be prepared for users sliding around on the sixth 
> string :-).
>
> Thanks
>
> Marc
>
>
>
>
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