On 03/11/2011 01:53 PM, Ulrike Fischer wrote:
Am Sun, 06 Feb 2011 10:25:06 +0100 schrieb Taco Hoekwater:
[About virtual fonts and tounicode entries]
The tounicode entries still don't work as expected; hopefully Taco can
enlighten us.
tounicode (and the PDF /ToUnicode feature) works on the font glyphs
that are actually included in the pdf, that is why it does not work. In
the virtual font, it does notwork because there is no actual glyph, and
in the original is works 'too well' as both 'a' and 'b' use the same
glyph.
I have now a working virtual font which reencodes a chess font. But
I'm still struck how to manipulate the tounicode values. I have now
put various combinations of XXX.characters[YY].tounicode=ZZ in
various places and nothing works. Can you tell me what I should do?
It does not work because the _real_ font needs tounicode values. As I
wrote earlier: tounicode works on actual glyphs, not virtual glyphs:
-- u=target, v=source
local real = font.fonts[id1]
for u, v in next, reencoding do
local c = chars[v]
chars[u].commands = {{ 'char', v }}
chars[u].kerns = nil
chars[u].width = c.width
chars[u].height = c.height
chars[u].depth = c.depth
chars[u].italic = nil
real.characters[v].tounicode = string.format("%04x",u)
end
font.fonts[id1] = real;
Best wishes,
Taco
