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Re: Why is NonMusicalPaperColumn.line-break-system-details.extra-offset
Re: Why is NonMusicalPaperColumn.line-break-system-details.extra-offset "upside down"?
Sat, 1 Jan 2022 16:34:54 -0500
> extra-offset affects the position of grobs *relative to the staff containing
> them*. When the Y position of a grob is increased, it either has no affect
> on the location of the staff, or it lowers the staff due to required spacing
> from the staff above. Since after-line-breaking is the bottom staff, a
> positive Y extra-offset value should have no affect or lower the bottom
> staff, to be consistent with positive Y extra-offset for every other grob on
> the staff, it seems to me.
> extra-offset doesn’t change the staff-staff spacing parameters, but it does
> change the grob locations used in the staff-staff spacing calculations.
> I think this is all consistent, but I could be wrong.
This property applies to any layout object supporting the grob-interface. It
takes a pair of numbers which specify the extra displacement in the horizontal
and vertical directions. Negative numbers move the object to the left or down.
The units are staff-spaces. The extra displacement is made after the
typesetting of objects is finished, so an object may be repositioned anywhere
without affecting anything else."
From that description, I (perhaps incorrectly?) expect two things:
1. Negative extra-offset [Y-values] in
NonMusicalPaperColumn.line-break-system-details should move the system *down*.
2. Such a tweak [in any direction] shouldn't be considered at all in the
IMO, either the documentation should be updated to reflect the reality, or the
behavior of NonMusicalPaperColumn.line-break-system-details extra-offset should
be modified to match the documentation [and the effect of extra-offset in every
Re: Why is NonMusicalPaperColumn.line-break-system-details.extra-offset "upside down"?, Jean Abou Samra, 2022/01/01