https://bugs.documentfoundation.org/show_bug.cgi?id=69254
--- Comment #40 from Tor Lillqvist <[email protected]> ---
To ikjt in comment #39:
It seems that what CoreText actually gives us is a floating point number
between -1.0 and 1.0, with 0 being the "normal" weight. See
https://developer.apple.com/documentation/coretext/kctfontweighttrait
That is then turned into LO's FontWeight enumeration (in
include/tools/fontenum.hxx, which does have a relatively nice collection of
named weights:
> enum FontWeight { WEIGHT_DONTKNOW, WEIGHT_THIN, WEIGHT_ULTRALIGHT,
> WEIGHT_LIGHT, WEIGHT_SEMILIGHT, WEIGHT_NORMAL,
> WEIGHT_MEDIUM, WEIGHT_SEMIBOLD, WEIGHT_BOLD,
> WEIGHT_ULTRABOLD, WEIGHT_BLACK
(This enumeration is the weight I mentioned in comment #38, 3 == WEIGHT_LIGHT.)
Some debugging output:
> debug:33677:25401597: ===> Overpass: Light: w=-0.4
> debug:33677:25401597: ===> Overpass: ExtraLight: w=-0.5
> debug:33677:25401597: ===> Overpass: Thin: w=-0.5
> debug:33677:25401597: ===> Overpass: Regular: w=0
So Light should be distinguishable from ExtraLight or Thin, but ExtraLight has
the same weight as Thin, so distinguishing between those would be harder.
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