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Implement leaning mark mechanism for F, L, P, b, d, h, k, p, q, r to get better mark placement. Now, "narrow" marks will align to these letters' extension parts (#1851).

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This commit is contained in:
be5invis 2023-08-12 23:01:10 -07:00
parent 387389919c
commit f7fd09172b
33 changed files with 419 additions and 168 deletions
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33
font-src/support/gr.mjs
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@ -20,6 +20,9 @@ export const LowerYDotAtBelow = LinkedGlyphProp("LowerYDotAtBelow");
export const DependentSelector = LinkedGlyphProp("DependentSelector");
export const MathSansSerif = LinkedGlyphProp("MathSansSerif");
export const VS01 = LinkedGlyphProp("VS01");
export const TieMark = LinkedGlyphProp("TieMark");
export const LeaningMark = LinkedGlyphProp("LeaningMark");
export const LeaningMarkSpacer = LinkedGlyphProp("LeaningMarkSpacer");
function LinkedGlyphProp(key) {
return {
get(glyph) {
@ -30,6 +33,12 @@ function LinkedGlyphProp(key) {
if (typeof toGid !== "string") throw new Error("Must supply a GID instead of a glyph");
if (!glyph.related) glyph.related = {};
glyph.related[key] = toGid;
},
amendName(name) {
return `${key}{${name}}`;
},
amendOtName(name) {
return `${name}.${key}`;
}
};
}
@ -61,25 +70,6 @@ function DecompositionProp(key) {
};
}
export const TieMark = {
tag: "TMRK",
get(glyph) {
if (glyph && glyph.related) return glyph.related.TieMark;
else return null;
},
set(glyph, toGid) {
if (typeof toGid !== "string") throw new Error("Must supply a GID instead of a glyph");
if (!glyph.related) glyph.related = {};
glyph.related.TieMark = toGid;
},
amendName(name) {
return `TieMark{${name}}`;
},
amendOtName(name) {
return name + ".tieMark";
}
};
export const TieGlyph = {
get(glyph) {
if (glyph && glyph.related) return glyph.related.TieGlyph;
@ -109,6 +99,7 @@ export const NeqLigationSlashDotted = BoolProp("NeqLigationSlashDotted");
export const OgonekTrY = BoolProp("OgonekTrY");
export const IsSuperscript = BoolProp("IsSuperscript");
export const IsSubscript = BoolProp("IsSubscript");
export const ScheduleLeaningMark = BoolProp("ScheduleLeaningMark");
export const Joining = {
get(glyph) {
@ -242,6 +233,7 @@ export function getGrTree(gid, grSetList, fnGidToGlyph) {
getGrTreeImpl(gid, grSetList, fnGidToGlyph, sink);
return sink;
}
function getGrTreeImpl(gid, grSetList, fnGidToGlyph, sink) {
if (!grSetList.length) return;
const g = fnGidToGlyph(gid);
@ -463,5 +455,6 @@ export const SvInheritableRelations = [
DependentSelector,
Joining,
NeqLigationSlashDotted,
OgonekTrY
OgonekTrY,
ScheduleLeaningMark
];