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Handle empty font variant tables in FontMetrics

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This commit is contained in:
Guille Gonzalez
2026-01-10 06:14:44 +01:00
parent 3d2294fe52
commit 63f1c54f12
1 changed files with 6 additions and 3 deletions
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9
Sources/SwiftUIMath/Internal/Font/FontMetrics.swift
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@@ -30,7 +30,8 @@ extension Math {
guard guard
let graphicsFont = FontRegistry.shared.graphicsFont(named: font.name), let graphicsFont = FontRegistry.shared.graphicsFont(named: font.name),
let glyphName = graphicsFont.name(for: glyph) as String?, let glyphName = graphicsFont.name(for: glyph) as String?,
let variantGlyphs = table.vVariants[glyphName] let variantGlyphs = table.vVariants[glyphName],
!variantGlyphs.isEmpty
else { else {
return [glyph] return [glyph]
} }
@@ -44,7 +45,8 @@ extension Math {
guard guard
let graphicsFont = FontRegistry.shared.graphicsFont(named: font.name), let graphicsFont = FontRegistry.shared.graphicsFont(named: font.name),
let glyphName = graphicsFont.name(for: glyph) as String?, let glyphName = graphicsFont.name(for: glyph) as String?,
let variantGlyphs = table.hVariants[glyphName] let variantGlyphs = table.hVariants[glyphName],
!variantGlyphs.isEmpty
else { else {
return [glyph] return [glyph]
} }
@@ -58,7 +60,8 @@ extension Math {
guard guard
let graphicsFont = FontRegistry.shared.graphicsFont(named: font.name), let graphicsFont = FontRegistry.shared.graphicsFont(named: font.name),
let glyphName = graphicsFont.name(for: glyph) as String?, let glyphName = graphicsFont.name(for: glyph) as String?,
let variantGlyphs = table.vVariants[glyphName] let variantGlyphs = table.vVariants[glyphName],
!variantGlyphs.isEmpty
else { else {
return glyph return glyph
} }