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1. Adrian Cochrane (alcinnz@floss.social)'s status on Wednesday, 01-Mar-2023 04:13:46 JST Adrian Cochrane

   Hopefully finishing my studies of FreeType's SFNT support today, somewhat auxiliary I see amongst it's simpler subcomponents:

   * Web Open Font Format decoding, with index-sorting & closing logic.
   * Hook between LibPNG & FT_Streams, whilst premultiplying alphas.
   * Loading SVG fonts with caching.

   This SFNT subsystem as per usual exposes a methodtable to FreeType's submodule infrastructure. This exposes methods for retrieving the charset encoding & registry (everyone uses UTF8 now).

   1/?

   • Adrian Cochrane (alcinnz@floss.social)'s status on Wednesday, 01-Mar-2023 04:20:56 JST Adrian Cochrane

     in reply to

     That accessor wraps one I've described yesterday, & directly exposes it as a method.

     There's a method for looking up postscript font names, possibly (build & runtime) consulting the font-variation. Looks up an index then prefers Windows stringtable to Apple's, since it appears they couldn't agree in the early days.
     This font-variation lookup is implemented in this same file, checking a few different places & running callback methods before checking hashes.

     2/?

   • Adrian Cochrane (alcinnz@floss.social)'s status on Wednesday, 01-Mar-2023 04:29:22 JST Adrian Cochrane

     in reply to

     There's a support routine for looking up strings from the font, & amongst others. It implements Murmur Hashing itself. There's a couple lookup tables.

     There's a methodtable for looking up glyph names, wrapping what I've described yesterday. And there's a methodtable for looking up fonttables from the parsed datastructures, this one exposes the face-loading method defined elsewhere.

     3/3 for today. I thought I'd finish today, but... Should be tomorrow!