On Oct 8, 2010, at 7:25 AM, Nick Payne wrote:
> If I have text characters at the left end of a TextSpanner, and some of those
> characters are subscripted, then the centering of the TextSpanner line seems
> to be calculated using the total height of both the main and subscripted
> text, which puts the line at the bottom of the main text rather than being
> centered on it. While this makes some sort of sense, I think that asking for
> the line to be centered means that I'm asking for it to be centered on the
> main text.
>
> %===========================================
> \version "2.13.35"
>
> #(set-global-staff-size 30)
>
> \relative c'' {
> \once \override TextSpanner #'bound-details #'left #'text = \markup {
> \concat { CII " " } }
> \once \override TextSpanner #'style = #'line
> \once \override TextSpanner #'font-shape = #'upright
> \once \override TextSpanner #'direction = #UP
> \once \override TextSpanner #'bound-details #'right #'text =
> \markup { \draw-line #'(0 . -0.5) }
> \once \override TextSpanner #'bound-details #'left #'stencil-align-dir-y =
> #CENTER
> gis16\startTextSpan b e b' e e, b' e\stopTextSpan
> \once \override TextSpanner #'bound-details #'left #'text =
> \markup { \concat { "CII" \sub 3 " " } }
> \once \override TextSpanner #'style = #'line
> \once \override TextSpanner #'font-shape = #'upright
> \once \override TextSpanner #'direction = #UP
> \once \override TextSpanner #'bound-details #'right #'text =
> \markup { \draw-line #'(0 . -0.5) }
> \once \override TextSpanner #'bound-details #'left #'stencil-align-dir-y =
> #CENTER
> gis,,\startTextSpan b e b' e e, b' e\stopTextSpan
> }
> %===========================================
Just an idea, but overriding the baseline may get what you want, but has the
disadvantage of making knowing how much to override the baseline by difficult.
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