30 lines
677 B
Rust
30 lines
677 B
Rust
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use std::{collections::hash_map::DefaultHasher, hash::Hash};
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#[derive(Clone, Copy, Debug, Hash, Eq, PartialEq)]
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pub struct Id(u64);
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impl Id {
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pub fn whole_screen() -> Self {
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Self(0)
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}
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pub fn popup() -> Self {
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Self(1)
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}
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pub fn new<H: Hash>(source: &H) -> Id {
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use std::hash::Hasher;
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let mut hasher = DefaultHasher::new();
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source.hash(&mut hasher);
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Id(hasher.finish())
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}
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pub fn with<H: Hash>(self, child: &H) -> Id {
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use std::hash::Hasher;
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let mut hasher = DefaultHasher::new();
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hasher.write_u64(self.0);
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child.hash(&mut hasher);
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Id(hasher.finish())
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}
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}
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