Re: Alignment issues of Time signature above the staff

[Kevin Barry]

Hi Chen,

I think this is a situation where you can't have it both ways - I
can't think of any automatic way for the TimeSignature to only occupy
that space when it "needs" to. Bar widths are not directly modifiable
and setting the extra-spacing-width is always going to push things
around (as it happens, that is exactly what \textLengthOn does - it
sets values for extra-spacing-width and -height - and that's all it
does).

Given how unusual this particular circumstance is I think the best
thing would be to use overrides every time it happens so that the
extra-spacing-width is only set when it needs to be (and if it happens
frequently, then write a function that wraps \compoundMeter and use it
as necessary). If you have circumstances where you simultaneously need
to stretch the bars and have overlapping text/signatures with
textLengthOn, then in that case I'd say you may just have to resort to
overriding whatever offsets you need to to position everything where
you want.

I've attached your example with the overrides I mean added in.

Kevin

On Thu, 23 Apr 2020 at 16:56, Chen Leo <address@hidden> wrote:
>
> Hi Kevin,
>
> After I made some adjustments to my score, I was still able to find a problem 
> which only happens on rare occasions. That is, the bar widths don't expand 
> according to the time signatures' width when time signatures exceed the bar 
> lines (see attachment).
>
> Later I found out that this problem is caused by the extra-spacing-width 
> property. Being set to #'(+inf.0 . -inf.0) by default, the time signatures' 
> lengths are not aware by the bar widths. I tried to set extra-spacing-width 
> to #'(0 . 0.8) (Time signature objects' default value), this solves the 
> problem, however, the problem about the markup text being pushed to the left 
> when using \textLengthOn occurs again.
>
> I think some possible solutions for this problem would be either to make text 
> scripts from other staves unaware of the time signature text scripts or to 
> expand bar widths when the text scripts' widths are exceeding them.
>
> Thanks,
> Leo

time-signatures-issue.ly
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