Re: [racket-users] racket/draw: how to extract the path from a font% object?
The thorny issue that `fontconfig` handles is mapping from a high-level specification of a font (e.g., family, weight, slant) — that is, how a user would typically specify a font — to an actual font file on disk. The shortcoming with font filenames is that they don't reliably tell you anything about the font inside. So `fontconfig` digs out metadata from the file itself (IIUC) and uses this to guess which font file best suits your wishes. (Also, Racket ships with `fontconfig`, so it’s guaranteed to be available.) Most of `fontland` is esoteric nonsense, but for the benefit of future list spelunkers, here's how I used `fontconfig` (badly, perhaps) to solve this problem: https://github.com/mbutterick/fontland/blob/master/fontland/font-path.rkt > On Apr 1, 2020, at 8:14 PM, David Storrs wrote: > > I knocked together a very minimal pure-Racket library for this so you > don't have to FFI. It won't give you all the bells and whistles, but > it should be a good starting point. > > https://pkgd.racket-lang.org/pkgn/package/font-finder > > Docs: https://github.com/dstorrs/font-finder/blob/master/README.md > > Newly arrived on a package server near you. > > ...where I note there is a newly-created package named 'fontland' that > was put up by Matthew and probably does all this and more. Doh. > > Well, hopefully this helps a little bit. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/4D36EF85-1278-42CF-AEAF-86C8822FF064%40mbtype.com.
Re: [racket-users] racket/draw: how to extract the path from a font% object?
I knocked together a very minimal pure-Racket library for this so you don't have to FFI. It won't give you all the bells and whistles, but it should be a good starting point. https://pkgd.racket-lang.org/pkgn/package/font-finder Docs: https://github.com/dstorrs/font-finder/blob/master/README.md Newly arrived on a package server near you. ...where I note there is a newly-created package named 'fontland' that was put up by Matthew and probably does all this and more. Doh. Well, hopefully this helps a little bit. On Wed, Apr 1, 2020 at 2:48 PM Matthew Butterick wrote: > > The answer is you can't, through pure Racket, because Racket delegates the > nitty-gritty of font-file resolution to external font-handling libraries. > > It is possible, however, to call into the `fontconfig` library via the FFI > and make it do the heavy lifting of 1) scanning font directories to amass a > list of possible fonts and then 2) finding a match for a certain query > pattern, say a family name. > > > > On Mar 31, 2020, at 4:52 PM, Matthew Butterick wrote: > > IIUC every `font%` object must correspond to a particular font file on disk. > > If so, given a `font%` object, how do I extract the path to that file? > > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/C28B01B3-4772-4AA4-899C-78DADE7B8B2A%40mbtype.com. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/CAE8gKoeWGa4M37BHYu82HbL0qk9xjuqMwRNT0J3_K%3DW2K3BP2g%40mail.gmail.com.
Re: [racket-users] racket/draw: how to extract the path from a font% object?
The answer is you can't, through pure Racket, because Racket delegates the nitty-gritty of font-file resolution to external font-handling libraries. It is possible, however, to call into the `fontconfig` library via the FFI and make it do the heavy lifting of 1) scanning font directories to amass a list of possible fonts and then 2) finding a match for a certain query pattern, say a family name. > On Mar 31, 2020, at 4:52 PM, Matthew Butterick wrote: > > IIUC every `font%` object must correspond to a particular font file on disk. > > If so, given a `font%` object, how do I extract the path to that file? -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/C28B01B3-4772-4AA4-899C-78DADE7B8B2A%40mbtype.com.
[racket-users] racket/draw: how to extract the path from a font% object?
IIUC every `font%` object must correspond to a particular font file on disk. If so, given a `font%` object, how do I extract the path to that file? -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/39ABE79E-4319-4B75-8BB4-B93694F7E203%40mbtype.com.
