Am 20.11.2010 um 16:35 schrieb Takayuki YATO (ZR):
I understand your explanation and admit it's logical. But from the
grammar of XeTeX I have the impression that XeTeX treats a font with
some feature enabled as different from the original font; that is,
there are two distinct fonts \tgpNorm and \tgpSmcp, and the latter has
small-caps glyphs for lowercase characters. In this view, the glyph at
slot 97 is different between these "two" fonts. And it is quite
natural
that one expect \fontcharwd, \XeTeXcharglyph, etc. applied to \tgpSmcp
return the information on the small-caps glyphs.
When one is trying to measure something one often is not able to
measure this thing... And I think you were always referencing the
standard glyphs while XeTeX allows for the printed glyphs that are
somehow "translated".
So I changed your macro and text body a bit, which now gives quite
reasonable values:
\def\measure#1{%
#1 % print the character
\setbox0=\hbox{#1}
\immediate\write16{% output to terminal
<#1>:
wd=\the\wd0\space\space/
ht=\the\ht0\space\space/
dp=\the\dp0}}
\font\tgpNorm="TeX Gyre Pagella" % default
\font\tgpSmcp="TeX Gyre Pagella:+smcp" % small-caps
% There two lines should not report the same measurement....
\tgpNorm\measure{a}\measure{f}\measure{g}\measure{A}\measure{F}
\measure{G}
\tgpSmcp\measure{a}\measure{f}\measure{g}\measure{A}\measure{F}
\measure{G}
But I think it would be nice to have easy means to determine the
printed glyph's dimensions.
--
Greetings
Pete
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