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Pre-hash contents of FontFaceKey

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This commit is contained in:
Emil Ernerfeldt
2025-09-05 09:15:22 +02:00
committed by valadaptive
parent 560346d007
commit 3385ad5bcb
1 changed files with 12 additions and 8 deletions
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20
crates/epaint/src/text/fonts.rs
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@@ -405,17 +405,21 @@ impl FontDefinitions {
}
/// Unique ID for looking up a single font face/file.
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Default)]
pub(crate) struct FontFaceKey(pub u64);
static KEY_COUNTER: AtomicU64 = AtomicU64::new(1);
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub(crate) struct FontFaceKey(u64);
impl FontFaceKey {
const INVALID: Self = Self(0);
fn new() -> Self {
Self(KEY_COUNTER.fetch_add(1, Ordering::Relaxed))
static KEY_COUNTER: AtomicU64 = AtomicU64::new(1);
Self(crate::util::hash(
KEY_COUNTER.fetch_add(1, Ordering::Relaxed),
))
}
}
// Safe, because we hash the value in the constructor.
impl nohash_hasher::IsEnabled for FontFaceKey {}
/// Cached data for working with a font family (e.g. doing character lookups).
@@ -440,7 +444,7 @@ impl CachedFamily {
return Self {
fonts,
characters: None,
replacement_glyph: Default::default(),
replacement_glyph: (FontFaceKey::INVALID, Default::default()),
glyph_info_cache: Default::default(),
};
}
@@ -448,7 +452,7 @@ impl CachedFamily {
let mut slf = Self {
fonts,
characters: None,
replacement_glyph: Default::default(),
replacement_glyph: (FontFaceKey::INVALID, Default::default()),
glyph_info_cache: Default::default(),
};
@@ -463,7 +467,7 @@ impl CachedFamily {
log::warn!(
"Failed to find replacement characters {PRIMARY_REPLACEMENT_CHAR:?} or {FALLBACK_REPLACEMENT_CHAR:?}. Will use empty glyph."
);
(FontFaceKey::default(), GlyphInfo::default())
(FontFaceKey::INVALID, GlyphInfo::default())
});
slf.replacement_glyph = replacement_glyph;