Re: markup column with baseline-skip relative to font size

[Aaron Hill]

On 2018-11-17 8:50 am, Kieren MacMillan wrote:
> Here’s a screenshot from the actual score I’m trying to engrave, with
> your function in place (minus the text duplication):
>
> Notice that the triangles of each figure are as hoped/expected… but
> the *actual baseline of the glyph* is not being honoured consistently
> across the various numbers: where the numerals descend (e.g., 7 and
> 5), everything is shifted, including the caret’s [apparent] "padding".

Ah, but the 7 and 5 in that font in fact have descenders.  The baseline 
is not the same as the bottom extent of a glyph.  For instance, round 
letters (e.g. "O") will sit below the baseline slightly in order to 
combat an optic illusion.

Mind you I could be mistaken, but I suspect that if you append an "x" to 
each number, you'll see that the number descends.  (An "x" typically 
should sit on the baseline, although I have seen some brush/script fonts 
where the glyph straddles.)

> Does Lilypond not know where the baseline is exactly? That is, is
> this graphic function you’ve created using properties of the glyph
> that can’t be used automagically by Lilypond?

The baseline is always at Y coordinate zero (0) for any stencil.  So I 
am not measuring the font, but rather working on the assumption that 
pango will align glyphs properly.

For reference, what is the font you are using?

-- Aaron Hill