Re: where X-extent of noteheads is set?

[Neil Puttock]

2011/7/18 Janek Warchoł <address@hidden>:

> i don't see anything called "stencil-width" in grob.cc...

78   if (get_property_data ("X-extent") == SCM_EOL)
79     set_property ("X-extent", Grob::stencil_width_proc);

The C++ name is Grob::stencil_width; the addition of _proc uses the
exported scheme version.

> I don't want to read the value of extent, i want to modify how it's
> calculated in case of noteheads.

The extent comes directly from the font (i.e., using the bounding box
of each glyph).

> I suppose that noteheads X-extent is wrongly calculated now.  Judging
> by this 
> http://lilypond.googlecode.com/issues/attachment?aid=-4756087064344904294&name=test.png&token=22aa1208ff6775e1780efcedc7e7e841&inline=1
> , all noteheads are assigned the same X-extent, even though the glyphs
> have different widths.

No, the problem is that the code doesn't account for differences in
font-size between heads; all the hard-coded shifts it calculates
(split equally between heads; heads move away from each other by the
same amount) are based on the assumption that meshing notes have the
same font-size.

Cheers,
Neil