Re: beginning-of-measure padding value?

[Trevor Bača]

On 4/11/07, Mats Bengtsson <address@hidden> wrote:
> Since you want to change the spacing after the time signature, you should
> modify the space-alist property for the TimeSignature:
>
>   \override TimeSignature #'space-alist = #'(
>     (first-note . (fixed-space . 12.0)) ; Default = 2.0
>     (right-edge . (extra-space . 0.5))
>     (staff-bar . (minimum-space . 2.0)))

Ah, good. This is what I was looking for.

Reference example of moving over first note on the line (when there's
a time signature):

%%% BEGIN %%%

\version "2.11.20"

\new Score \with {
  \override TimeSignature #'space-alist = #'(
     (first-note fixed-space . 10.0)
     (right-edge extra-space . 0.5)
     (staff-bar minimum-space . 2.0))
} {
  \new Staff {
     c'4 c'4 c'4 c'4
     d'4 d'4 d'4 d'4
  }
}

%%% END %%%


Incidentally, if you remove Time_signature_engraver, the TimeSignature
#'space-alist does nothing:

%%% BEGIN %%%

version "2.11.20"

\new Score \with {
  % this override does nothing ...
  \override TimeSignature #'space-alist = #'(
     (first-note fixed-space . 10.0)
     (right-edge extra-space . 0.5)
     (staff-bar minimum-space . 2.0))
} {
  \new Staff \with {
     % ... because of this remove
     \remove Time_signature_engraver
  } {
     c'4 c'4 c'4 c'4
     d'4 d'4 d'4 d'4
  }
}

%%% END %%%


However, since the order of preferatory material is [clef -> time
signature -> key signature], and since there is now neither a key
signature nor time signature, it's still possible to scoot the first
note over using the first-note attribute in the Clef #'space-alist:

%%% BEGIN %%%

\version "2.11.20"

\new Score \with {
  \override Clef #'space-alist = #'(
     (ambitus extra-space . 2.0)
     (staff-bar extra-space . 0.7)
     (key-cancellation minimum-space . 3.5)
     (key-signature minimum-space . 3.5)
     (time-signature minimum-space . 4.2)
     (first-note minimum-fixed-space . 15.0) % this is the scooted value
     (next-note extra-space . 0.5)
     (right-edge extra-space . 0.5))
} {
  \new Staff \with {
     \remove Time_signature_engraver
  } {
     c'4 c'4 c'4 c'4
     d'4 d'4 d'4 d'4
  }
}

%%% END %%%


So the relevant observation seems to be: there's no general way to say
"move the first note of the lline over 12 units"; instead, first
figure out what the last (rightmost) "preferatory" grob is
(immediately before the first note) and then change the first-note
attribute of the #'space-alist of that rightmost preferatory grob.

Thanks, Mats.


--
Trevor Bača
address@hidden