If anyone is going to attempt to create a function or engraver for adding those
slashes automatically there is a thread Urs started last summer about
Indicating duration with lines where there might be some code worth reusing for
this.
> 26 mars 2021 kl. 21:01 skrev Jean Abou Samra <j...@abou-samra.fr>:
>
> Hello,
>
> Le 26/03/2021 à 15:23, bart deruyter a écrit :
>> Hey,
>>
>> - thanks for the idea, but after some thought, I'm afraid it won't work.
>> Glissandi don't seem to be the right tool anyway since in the regular staff
>> I'd have to hide it, and when I'd need a real 'glissando' as glissando, I'd
>> have to unhide it. I'm sure it would end up being a real mess, certainly
>> when someone else would edit the file later on.
>>
>> I've already tried to find a way to achieve a regular line as sustain line,
>> if that can be rotated or adjusted, but I only found three styles, text,
>> bracket and mixed. Is there a way to change it in a regular line and adjust
>> the angle?
>> Using a sustain pedal-line would be more appropriate because that I could
>> consistently hide in the regular staff. And that is what these lines
>> represent anyway. Guitarists, nor lutists use it in a regular staff anyway,
>> as far as I know, so it could easily be hidden in the regular staff.
> Hijacking piano pedals is doable. However, I went for a different approach,
> using the Episema grob. This is much simpler as its callbacks are those from
> the line-spanner-interface already, and it is contained in the same
> VerticalAxisGroup as the StaffSymbol (unlike piano pedals which are spaced on
> a different line, with all the implications to let them join specific staff
> positions).
>
>> -My solution for the dots does not seem to be good after all. I've added the
>> "New_fingering_engraver" to the tabstaff and modified the strokefinger to
>> show a dot.
>> At first it worked, but when applying it in chords, I get this error:
>> programming error: no side-axis setting found for grob StrokeFinger.
>>
>> When the Tabstaff is commented out, lilypond does not complain. When used on
>> a single note (in the chord, or at a standalone note) lilypond doesn't
>> complain either. My guess is that TabStaff can't completely handle
>> fingering, at least not right hand fingering because normally we don't add
>> fingeringnotation in a tabstaff. Or maybe I have to add another 'consists'
>> that I'm not aware of?
>
> A comment in ly/engraver-init.ly tells that Script_column_engraver must come
> before New_fingering_engraver:
>
> https://gitlab.com/lilypond/lilypond/-/blob/master/ly/engraver-init.ly#L251
> Thus, one has to \remove the Script_column_engraver and add it later again.
> Note that these two engravers are designed to operate in voice-like contexts,
> not staff-like contexts.
>
>> I've added the .ly file in attachment so everyone can see what I'm trying to
>> achieve (I've omitted the glissando for now).
>>
>> - This leads me to a third issue I had, but somewhat solved: the font. To
>> get the right appearance you must have the font installed (= the 'somewhat'
>> :-) ). It probably will fallback to a default font if you don't
>> have it. Today I discovered Musescore appears to have similar fonts for lute
>> tablature. If french tablature letters can be included in lilyponds default
>> font, maybe these might be an interesting starting point.
> I can confirm that this renders awfully over here.
>
> If you want to make a feature request for LilyPond, the bug-lilypond list is
> the way to go:
>
> http://lilypond.org/contact.html
>
> Best,
> Jean
>
\version "2.22.0"
#(define (raise-by-half-space grob)
(ly:grob-set-property! grob
'staff-position
(+ 1.0 (ly:grob-property grob 'staff-position))))
#(define (calc-pseudo-pedal-bound-info grob)
(let* ((staff-symbol (ly:grob-object grob 'staff-symbol))
(staff-space (ly:staff-symbol-staff-space staff-symbol))
(left-Y (* -1.5 staff-space))
(right-Y (* -0.5 staff-space)))
`((left . ((Y . ,left-Y)))
(right . ((Y . ,right-Y))))))
\layout {
indent = 0
\context {
\Score
\override SpacingSpanner.spacing-increment = 3
}
\context {
\TabStaff
tablatureFormat = #fret-letter-tablature-format
stringTunings = \stringTuning <g, c e a >
fretLabels = #'("a" "b" "c" "d" "e" "f" "g" "h" "i" "k" "l")
pedalSustainStyle = #'bracket
\remove "Clef_engraver"
\remove "Time_signature_engraver"
\override StrokeFinger.staff-padding = ##f
\omit StringNumber
\override TabNoteHead.whiteout = ##f
\override TabNoteHead.before-line-breaking = #raise-by-half-space
\override TabNoteHead.font-name = "LeRoy"
}
\context {
\Staff
\omit StringNumber
\omit StrokeFinger
}
\context {
\TabVoice
\remove "Script_column_engraver"
\consists "New_fingering_engraver"
\consists "Script_column_engraver"
\consists "Episema_engraver"
\override Episema.Y-offset = 0
\override Episema.bound-details = #calc-pseudo-pedal-bound-info
}
\context {
\Dynamics
\consists "Note_heads_engraver"
\omit NoteHead
\override NoteHead.X-extent = #'(0 . 0.65)
\consists "Stem_engraver"
\override Stem.length = 6
\override Stem.direction = #UP
\override Flag.stencil = #old-straight-flag
\override VerticalAxisGroup.staff-affinity = #DOWN
\override VerticalAxisGroup.nonstaff-relatedstaff-spacing.minimum-distance = 10
\override VerticalAxisGroup.nonstaff-unrelatedstaff-spacing.padding = 2.5
}
}
RHd = \rightHandFinger \markup \fontsize #4 \musicglyph "dots.dot"
mySustainOn = \episemInitium
mySustainOff = \episemFinis
music = \relative c' {
\mergeDifferentlyHeadedOn
\mergeDifferentlyDottedOn
\time 2/4
<c e-\RHd g-\RHd>2
<<
{ a8 b'\mySustainOn c_\RHd fis\mySustainOff }
\\
{ \voiceTwo a,,4. }
>>
}
rhythm = {
c4 16 s s s
}
<<
\new Staff {
\music
}
\new Dynamics \scaleDurations 2 \rhythm
\new TabStaff {
\override Beam.concaveness = #10000
\transpose c c, { \music}
}
>>>
