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}
}
>>
