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Add letter spacing and text transforms to GPUI (#111)

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* Add text spacing and transform style plumbing

* Apply byte-stable transforms and spacing-aware truncation

* Add platform letter spacing support

* Fix scheduler clippy warning

* Refresh dependency lockfile

* Fix CI for text spacing changes

* Add text transform preview example
This commit is contained in:
Max Carter 祁明思
2026-08-07 21:48:02 -07:00
committed by GitHub
parent 568271c01c
commit 6043651563
18 changed files with 952 additions and 418 deletions
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crates/gpui_wgpu/src/cosmic_text_system.rs
+13 -3
View File
@@ -483,26 +483,36 @@ impl CosmicTextSystemState {
let primary_weight = face.weight;
let primary_features = loaded_font.features.clone();
let fallback_chain = Arc::clone(&loaded_font.user_fallback_chain);
let letter_spacing = run
.letter_spacing
.map(|spacing| spacing.as_f32() / font_size.as_f32());
// build one `Attrs` per slot up front. each clone of span attrs
// would otherwise re-allocate the `font_features` Vec.
let primary_attrs = Attrs::new()
let mut primary_attrs = Attrs::new()
.metadata(run.font_id.0)
.family(Family::Name(&primary_family_name))
.stretch(primary_stretch)
.style(primary_style)
.weight(primary_weight)
.font_features(primary_features.clone());
if let Some(letter_spacing) = letter_spacing {
primary_attrs = primary_attrs.letter_spacing(letter_spacing);
}
let fallback_attrs: SmallVec<[Attrs<'_>; 4]> = fallback_chain
.iter()
.map(|(fb_id, fb_name)| {
Attrs::new()
let mut attrs = Attrs::new()
.metadata(fb_id.0)
.family(Family::Name(fb_name))
.stretch(primary_stretch)
.style(primary_style)
.weight(primary_weight)
.font_features(primary_features.clone())
.font_features(primary_features.clone());
if let Some(letter_spacing) = letter_spacing {
attrs = attrs.letter_spacing(letter_spacing);
}
attrs
})
.collect();