Re: Alignment issues of Time signature above the staff

[Chen Leo]

Hi Kevin,


Thank you for your reply.


For the first problem, you will have to set break-align-symbol to ##f to 
reproduce the problem. That is because by default break-align-symbol is set to 
#'time-signature. so commenting out the override shouldn't help.


Secondly, using \override TimeSignature.X-extent = #'(0 . 0) causes collisions 
when texts and notes are displayed above the staff because lilypond is not 
adding vertical spacing above the staff. And it seems like now all the time 
signatures are shifted a bit to the right instead of aligning right after the 
bar line.


Thirdly, the bar numbers are raised to align vertically with the 
time-signatures, which is not something I would like to have. It will be nice 
if you can share any ideas on how that can be solved.


Leo

Here's an example:

\version "2.20.0"

\layout {
  \context {
    \type "Engraver_group"
    \consists "Time_signature_engraver"
    \consists "Axis_group_engraver"
    \name "TimeSig"
    \alias "Staff"
    % original settings from "http://lsr.di.unimi.it/LSR/Snippet?id=272";
    %{
      \override TimeSignature.font-size = #3
      \override TimeSignature.break-align-symbol = ##f
      \override TimeSignature.X-offset =
        #ly:self-alignment-interface::x-aligned-on-self
      \override TimeSignature.self-alignment-X = #CENTER
      \override TimeSignature.after-line-breaking =
      #shift-right-at-line-begin
    %}
    % settings after adjustments
    {
    \override TimeSignature.font-size = #4
    \override TimeSignature.X-offset =
      #ly:self-alignment-interface::x-aligned-on-self
    \override TimeSignature.self-alignment-X = #LEFT
    \override TimeSignature.X-extent = #'(0 . 0)
    }
  }
  \context {
    \Score
    \accepts TimeSig
  }
  \context {
    \Staff
    \remove "Time_signature_engraver"
  }
}

timeSignatures = { \numericTimeSignature \time 4/4 s1 \time 3/8 s4. \time 3/4 
s2. \break \time 4/4 s1 }

\score {
  <<
    \new TimeSig \timeSignatures
    \new Staff \relative c' { c4 ^\markup \column {"a" "b" "c"} ( d4 e4 f4 ) 
a''4
                              ^\markup \column {"a" "b" "c"} ( g8 ) R2. c1 }
    \new Staff \relative c' { R1 R4. \clef bass a2. c1 }
    \new Staff \relative c' { R1 R4. R2. c1 }
  >>
}


________________________________
发件人: Kevin Barry <barr...@gmail.com>
发送时间: 2020年3月28日 08:48
收件人: Chen Leo <leo04c...@outlook.com>
抄送: lilypond-user@gnu.org <lilypond-user@gnu.org>
主题: Re: Alignment issues of Time signature above the staff

Hi Chen,

I was able to solve the second of your problems (the whole bar rests
being shifted by the time signatures in the TimeSig context) by
adding:
\override TimeSignature.X-extent = ##f
(You could also use the value #'(0 . 0) if the warnings are off
putting, but I noticed that that doesn't *quite* fix it fully.)

I tried to reproduce your description of the first problem (time
signatures aligning over cue clefs), but even commenting out the
break-align-symbol override didn't make it appear. I was able to
correct the alignment of the first time signature by removing the
line:
\override TimeSignature.after-line-breaking = #shift-right-at-line-begin

After both of the above modifications everything looks OK to me, but
perhaps we need a fuller example.

Kevin

On Sat, 28 Mar 2020 at 10:30, Chen Leo <leo04c...@outlook.com> wrote:
>
> Hi, I am trying to put time signatures above the staffs according to 
> "http://lsr.dsi.unimi.it/LSR/Item?id=272";.
>
>
>
> I discovered an issue, that is whenever a clef change is made, the time 
> signature on the next bar fails to align to the bar line, it aligns to the 
> cue clef in the previous bar instead. After some research, I found out that 
> this is because the TimeSignature property "break-align-symbol" is set to 
> "##f". I set "break-align-symbol" back to "#'time-signature", and this 
> problem is solved, however, the horizontal alignments of the other time 
> signatures are messed up. (Using the code presented below, the 4/4 in the 
> first bar moves to the right & the bar rest on the third bar stretches to the 
> right. ) Are there any ways to align all the time signatures to their 
> corresponding bar lines without changing the alignments of other objects? 
> Thank you.
>
>
>
> \version "2.20.0"
>
>
>
> \layout {
>
>   \context {
>
>     \type "Engraver_group"
>
>     \consists "Time_signature_engraver"
>
>     \consists "Axis_group_engraver"
>
>     \name "TimeSig"
>
>     \alias "Staff"
>
>     \override TimeSignature.font-size = #4
>
>     \override TimeSignature.break-align-symbol = #'time-signature
>
>     \override TimeSignature.X-offset =
>
>       #ly:self-alignment-interface::x-aligned-on-self
>
>     \override TimeSignature.self-alignment-X = #LEFT
>
>     \override TimeSignature.after-line-breaking =
>
>       #shift-right-at-line-begin
>
>   }
>
>   \context {
>
>     \Score
>
>     \accepts TimeSig
>
>   }
>
>   \context {
>
>     \Staff
>
>     \remove "Time_signature_engraver"
>
>   }
>
> }
>
>
>
> timeSignatures = { \numericTimeSignature \time 4/4 s1 \time 3/8 s4. \time 3/4 
> s2. }
>
>
>
> \score {
>
>   <<
>
>     \new TimeSig \timeSignatures
>
>     \new Staff \relative c' { c4 ( d4 e4 f4 ) a4 ( g8 ) R2. }
>
>     \new Staff \relative c' { R1 R4. \clef bass a2. }
>
>     \new Staff \relative c' { R1 R4. R2. }
>
>   >>
>
> }
>
>