Greetings, long time lurker/first time posting here. I have been working on
this one for a couple of days and can't seem to figure it out.
I'm having an issue where on macOS, there are some fonts/variants returned
by get-face-list that I can't actually use with a drawing function like text
.
#lang racket
(require pict racket/draw)
(define (list-fonts str)
(filter (lambda(s) (string=? str (substring s 0 (min (string-length str)
(string-length s)))))
(get-face-list #:all-variants? #t)))
(define (demo-font str)
(apply vl-append (map (lambda (f) (text f f 30)) (list-fonts str))))
Attached is a screenshot comparison of the results of this code on Windows
and macOS, both using Racket 6.12.
To sum up the problem “narratively”, as it were: on Windows, among the
strings returned by get-face-list is "IBM Plex Sans Text, Medium" and I can
do (text "Hello" "IBM Plex Sans Text, Medium" 30), and pict will draw using
that font.
But on macOS, where get-face-list will include the string "IBM Plex Sans,
Text" (note comma), if I do (text "Hello" "IBM Plex Sans, Text"), I instead
get the result in the default sans serif font.
Furthermore, all of IBM Plex Sans’s 16 weights work properly on
macOS/Racket—except the "Text" weight!
A similar problem happens with some other fonts on macOS, e.g. Halyard
Micro Regular and Halyard Micro Book — the Regular weight works but the
Book weight displays using the Regular weight, despite using the exact
string found in get-face-list as the font/variant name in the call to text.
I did my main example using IBM Plex Sans since it's a free font [1] should
anyone wish to replicate my results for themselves.
How would I best go about finding out what is happening here? Are certain
words like “book” or “text” just not recognized/useable as a font weight on
macOS? Apologies if I’m missing something obvious!
[1]: https://ibm.github.io/type/
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