mikeslab/Iosevka
1
0
Fork 0
Code Issues Pull requests Projects Releases 1 Packages Wiki Activity Actions 1

ccmp: Add composition for overlays and hooks (#2262)

Browse source
This commit is contained in:
Belleve 2024-03-27 15:47:20 -10:00 • committed by GitHub
parent d461934be1
commit 4a6862aa45
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
4 changed files with 152 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

12
packages/font-otl/src/gsub-ccmp.ptl
View file

@ -1,6 +1,6 @@
$$include './meta/macros.ptl'
import [UkMapToLookup UkMap2ToLookup] from "./table-util.mjs"
import [UkMapToLookup UkLigatureToLookup] from "./table-util.mjs"
import [Dotless TieMark TieGlyph OgonekTrY IsSuperscript IsSubscript LeaningMark LeaningMarkSpacer] from "@iosevka/glyph/relation"
import as UnicodeKnowledge from "@iosevka/font-glyphs/unicode-knowledge"
@ -33,6 +33,14 @@ export : define [buildCCMP gsub glyphStore markGlyphs] : begin
gsub.endBlock rec
Ccmp-Group "Combining of overlay/hoked letters" : begin
define combineLookup : gsub.createLookup : object
.type 'gsub_ligature'
.substitutions : UkLigatureToLookup UnicodeKnowledge.ccmpCombinations
function u : glyphStore.queryNameByUnicode u
export-lookup combineLookup
Ccmp-Group "Mark transforms" : begin
define groupGrekUpperTonos {}
@ -67,7 +75,7 @@ export : define [buildCCMP gsub glyphStore markGlyphs] : begin
export-lookup : gsub.createLookup : object
.type 'gsub_ligature'
.substitutions : UkMap2ToLookup UnicodeKnowledge.markCompositionTf
.substitutions : UkLigatureToLookup UnicodeKnowledge.markCompositionTf [function n n]
export-lookup : gsub.createLookup : object
.type 'gsub_multiple'

27
packages/font-otl/src/table-util.ptl
View file

@ -221,8 +221,25 @@ export : define [UkMapToLookup m] : begin
r.push v
return { .left l .right r }
export : define [UkMap2ToLookup mm] : begin
local res {}
foreach { g1 second } [Object.entries mm] : foreach { g2 gTo } [Object.entries second] : begin
res.push {.from {g1 g2} .to gTo}
return res
export : define [UkLigatureToLookup data mapper] : begin
local substitutions {}
foreach { from to } [items-of data] : begin
local allFound true
local fromGlyphNames {}
local toGlyph null
foreach u [items-of from] : begin
local gn : mapper u
if gn
: then : fromGlyphNames.push gn
: else : set allFound false
begin
local gn : mapper to
if gn
: then : set toGlyph gn
: else : set allFound false
if allFound : substitutions.push {.from fromGlyphNames .to toGlyph}
return substitutions