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Fix variable font weight for SwashCache::get_outline_commands()

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This commit is contained in:
Todd York 2026-01-01 12:11:22 +08:00 • committed by Jeremy Soller
parent 0d9af4f7de
commit cfb7224370
1 changed files with 14 additions and 2 deletions
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16
src/swash.rs
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@ -89,12 +89,24 @@ fn swash_outline_commands(
return None; return None;
}; };
let variable_width = font
.as_swash()
.variations()
.find_by_tag(swash::Tag::from_be_bytes(*b"wght"));
// Build the scaler // Build the scaler
let mut scaler = context let mut scaler = context
.builder(font.as_swash()) .builder(font.as_swash())
.size(f32::from_bits(cache_key.font_size_bits)) .size(f32::from_bits(cache_key.font_size_bits))
.hint(!cache_key.flags.contains(CacheKeyFlags::DISABLE_HINTING)) .hint(!cache_key.flags.contains(CacheKeyFlags::DISABLE_HINTING));
.build(); if let Some(variation) = variable_width {
scaler = scaler.variations(std::iter::once(swash::Setting {
tag: swash::Tag::from_be_bytes(*b"wght"),
value: f32::from(cache_key.font_weight.0)
.clamp(variation.min_value(), variation.max_value()),
}));
}
let mut scaler = scaler.build();
// Scale the outline // Scale the outline
let mut outline = scaler let mut outline = scaler