mirror of
https://github.com/typst/typst
synced 2025-05-15 17:45:27 +08:00
39 lines
901 B
Rust
39 lines
901 B
Rust
use super::*;
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/// Forced use of a certain math class.
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///
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/// This is useful to treat certain symbols as if they were of a different
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/// class, e.g. to make a symbol behave like a relation.
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///
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/// # Example
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/// ```example
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/// #let loves = math.class(
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/// "relation",
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/// sym.suit.heart,
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/// )
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///
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/// $x loves y and y loves 5$
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/// ```
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#[elem(LayoutMath)]
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pub struct ClassElem {
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/// The class to apply to the content.
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#[required]
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pub class: MathClass,
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/// The content to which the class is applied.
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#[required]
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pub body: Content,
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}
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impl LayoutMath for ClassElem {
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fn layout_math(&self, ctx: &mut MathContext) -> SourceResult<()> {
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ctx.style(ctx.style.with_class(self.class()));
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let mut fragment = ctx.layout_fragment(&self.body())?;
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ctx.unstyle();
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fragment.set_class(self.class());
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ctx.push(fragment);
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Ok(())
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}
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}
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