Re: Arbitrary accidental glyphs

[Graham Breed]

Han-Wen Nienhuys wrote:
> On Thu, Jul 17, 2008 at 11:10 AM, Graham Breed <address@hidden> wrote:
>
> >      \override Accidental #'font-name = #"Sagittal"
> >
> > in a script, and characters from Accidental's glyph-name-alist can come from
> > Sagittal.  The problem is that LilyPond can't retrieve named glyphs from a
> > non-standard font.
>
> that's wierd.  Lily basically outputs
>
>   /glyphname showglyph
>
> Postscript code, so it should work for any font that has glyph names.

The code is (scm/output-ps.scm)


(define (named-glyph font glyph)
  (ly:format "~a /~a glyphshow " ;;Why is there a space at 
the end?
             (ps-font-command font)
             glyph))


So it's also trying to output a description of the font, 
which expands to include the filename, and a Pango_font 
doesn't have one.  Changing it to


(define (named-glyph font glyph)
  (ly:format "/~a glyphshow" glyph))


means no error gets generated but the output has things like 
this:


/noteheads.s2 showglyph
458.9567 -744.0706 moveto
0.0500 3.2322 -0.0250 -2.2722 0.0800 draw_round_box
9.3556 -746.5706 moveto
/sharp showglyph


It's trying to print the accidentals with the same font as 
the note heads.  The result is garbage.  So how do we tell 
it to use the Pango_font?


                  Graham