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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,9 @@ | ||
| import { GlyphFinder } from "./glyph-finder.mjs"; | ||
|
|
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| export function bakeFeature(tag, font, filter) { | ||
| export function bakeFeature(tag, font, filter, scriptTag, languageTag) { | ||
| const find = new GlyphFinder(font); | ||
| for (const [c, g] of font.cmap.unicode.entries()) { | ||
| if (!filter(c)) continue; | ||
| font.cmap.unicode.set(c, find.subst(tag, g)); | ||
| font.cmap.unicode.set(c, find.subst(tag, g, scriptTag, languageTag)); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| import { bakeFeature } from "../helpers/bake-feature.mjs"; | ||
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|
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| export function bakeLocalization(font, flags) { | ||
| if (flags.mono || flags.term || flags.pwid) return; | ||
|
|
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| let langTag = "JAN "; | ||
| switch (flags.region) { | ||
| case "J": | ||
| langTag = "JAN "; | ||
| break; | ||
| case "K": | ||
| langTag = "KOR "; | ||
| break; | ||
| case "SC": | ||
| langTag = "ZHS "; | ||
| break; | ||
| case "TC": | ||
| langTag = "ZHT "; | ||
| break; | ||
| case "HC": | ||
| langTag = "ZHH "; | ||
| break; | ||
| } | ||
|
|
||
| bakeFeature("locl", font, c => c != 0x2010, "hani", langTag); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| import { Ot } from "ot-builder"; | ||
|
|
||
| import { | ||
| alterContours, | ||
| copyGeometryData, | ||
| getAdvanceHeight, | ||
| getAdvanceWidth | ||
| } from "../helpers/geometry.mjs"; | ||
| import { GlyphFinder } from "../helpers/glyph-finder.mjs"; | ||
|
|
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| export function buildContinuousEmDash(font) { | ||
| const finder = new GlyphFinder(font); | ||
| const emDash = finder.unicode(0x2014); | ||
| const bound = Ot.GeometryUtil.apply(Ot.GeometryUtil.GetBound, emDash.geometry); | ||
|
|
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| // If the em-dash is already continuous, we are already done, and simply return | ||
| if (bound.xMin <= 0) return; | ||
|
|
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| const emDashV = finder.subst("vert", emDash); | ||
| const boundV = Ot.GeometryUtil.apply(Ot.GeometryUtil.GetBound, emDashV.geometry); | ||
|
|
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| // Create new glyphs, add them into font's glyph list | ||
| const emDashCont = buildHGlyph(emDash, bound); | ||
| const emDashVCont = buildVGlyph(emDashV, boundV); | ||
| font.glyphs = Ot.ListGlyphStoreFactory.createStoreFromList([ | ||
| ...font.glyphs.decideOrder(), | ||
| ...[emDashCont, emDashVCont] | ||
| ]); | ||
|
|
||
| // Build CALT and VERT | ||
| buildCalt(font, emDash, emDashCont); | ||
| buildVert(font, "vert", emDash, emDashCont, emDashVCont); | ||
| buildVert(font, "vrt2", emDash, emDashCont, emDashVCont); | ||
| } | ||
|
|
||
| function buildHGlyph(emDash, bound) { | ||
| const g1 = new Ot.Glyph(); | ||
| const adw = getAdvanceWidth(emDash); | ||
| copyGeometryData(g1, emDash); | ||
| alterContours(g1, (x, y) => [ | ||
| x <= (bound.xMin + bound.xMax) / 2 ? bound.xMax - 1.05 * adw : x, | ||
| y | ||
| ]); | ||
| return g1; | ||
| } | ||
| function buildVGlyph(emDashV, boundV) { | ||
| const g1 = new Ot.Glyph(); | ||
| const adh = getAdvanceHeight(emDashV); | ||
| copyGeometryData(g1, emDashV); | ||
| alterContours(g1, (x, y) => [ | ||
| x, | ||
| y >= (boundV.yMin + boundV.yMax) / 2 ? boundV.yMin + 1.05 * adh : y | ||
| ]); | ||
| return g1; | ||
| } | ||
|
|
||
| function buildCalt(font, emDash, emDashCont) { | ||
| const substSingle = new Ot.Gsub.Single(); | ||
| substSingle.mapping.set(emDash, emDashCont); | ||
| font.gsub.lookups.push(substSingle); | ||
|
|
||
| const substCalt = new Ot.Gsub.Chaining(); | ||
| substCalt.rules.push({ | ||
| match: [new Set([emDash, emDashCont]), new Set([emDash])], | ||
| inputBegins: 1, | ||
| inputEnds: 2, | ||
| applications: [ | ||
| { | ||
| at: 0, | ||
| apply: substSingle | ||
| } | ||
| ] | ||
| }); | ||
| font.gsub.lookups.unshift(substCalt); | ||
|
|
||
| const calt = { tag: "calt", lookups: [substCalt] }; | ||
| font.gsub.features.unshift(calt); | ||
| for (const [scriptTag, script] of font.gsub.scripts) { | ||
| if (script.defaultLanguage) script.defaultLanguage.features.unshift(calt); | ||
| for (const [langTag, lang] of script.languages) lang.features.unshift(calt); | ||
| } | ||
| } | ||
|
|
||
| function buildVert(font, tag, emDash, emDashCont, emDashVCont) { | ||
| for (const feature of font.gsub.features) { | ||
| if (feature.tag !== tag) continue; | ||
| for (const lookup of feature.lookups) { | ||
| if (lookup.type === Ot.Gsub.LookupType.Single && lookup.mapping.has(emDash)) { | ||
| lookup.mapping.set(emDashCont, emDashVCont); | ||
| } | ||
| } | ||
| } | ||
| } |
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