I appreciate it. I had already tried bold and italic, but your note did
give me the idea to try specifying the weights directly, e.g. "IBM Plex
Sans, weight=700" —which, sadly, didn't solve my problem, but may have made
the problem itself a bit more clear.
Going off of the list of weights in Pango’s documentation [1] I cooked up
this test:
#lang racket
(require pict)
(define weights
'("100" ; thin (since Pango 1.24)
"200" ; ultralight
"300" ; light
"350" ; semilight (since Pango 1.36.7)
"380" ; book (since Pango 1.24)
"400" ; default
"500" ; normal (since Pango 1.24)
"600" ; semibold
"700" ; bold
"800" ; ultrabold
"900" ; heavy
"1000")); ultraheavy (since Pango 1.24)
(define (compare-weights font-name)
(apply vl-append (map (lambda (f) (text font-name (string-append
font-name ", weight=" f) 34)) weights)))
When I do (compare-weights "IBM Plex Sans") it becomes obvious that Racket
is actually only able to use four of Plex Sans’s seven weights (on macOS).
Input Serif [2] is another good example. It has six weights but this test
shows only three of them being used.
[1]: https://developer.gnome.org/pango/stable/pango-Fonts.html#PangoWeight
[2]: http://input.fontbureau.com
On Friday, February 16, 2018 at 3:48:51 PM UTC-6, Robby Findler wrote:
>
> I'm not sure what the right answer is here, but in some specific cases
> that have happened to me along these lines, I've found that specifying
> 'italic or 'bold works out.
>
> Sorry that's not much to go on.
>
> Robby
>
>
> On Thu, Feb 15, 2018 at 2:44 PM, Joel Dueck <[email protected]
> <javascript:>> wrote:
> > 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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