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Factorize sub's and super's show rules

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This commit is contained in:
Malo 2025-06-12 21:48:35 +01:00
parent 0a4d4ffa8d
commit 6ac77bc1d1
1 changed files with 33 additions and 20 deletions
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53
crates/typst-library/src/text/shift.rs
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@ -62,16 +62,14 @@ pub struct SubElem {
impl Show for Packed<SubElem> {
#[typst_macros::time(name = "sub", span = self.span())]
fn show(&self, _: &mut Engine, styles: StyleChain) -> SourceResult<Content> {
let outer_text_size = TextElem::size_in(styles);
Ok(self
.body
.clone()
.styled(TextElem::set_subperscript(Some(ScriptSettings {
typographic: self.typographic(styles),
shift: self.baseline(styles).map(|l| -l.to_em(outer_text_size)),
size: self.size(styles).map(|t| t.0.to_em(outer_text_size)),
kind: ScriptKind::Sub,
}))))
show_script(
styles,
self.body.clone(),
self.typographic(styles),
self.baseline(styles),
self.size(styles),
ScriptKind::Sub,
)
}
}
@ -135,19 +133,34 @@ pub struct SuperElem {
impl Show for Packed<SuperElem> {
#[typst_macros::time(name = "super", span = self.span())]
fn show(&self, _: &mut Engine, styles: StyleChain) -> SourceResult<Content> {
let outer_text_size = TextElem::size_in(styles);
Ok(self
.body
.clone()
.styled(TextElem::set_subperscript(Some(ScriptSettings {
typographic: self.typographic(styles),
shift: self.baseline(styles).map(|l| -l.to_em(outer_text_size)),
size: self.size(styles).map(|t| t.0.to_em(outer_text_size)),
kind: ScriptKind::Super,
}))))
show_script(
styles,
self.body.clone(),
self.typographic(styles),
self.baseline(styles),
self.size(styles),
ScriptKind::Super,
)
}
}
fn show_script(
styles: StyleChain,
body: Content,
typographic: bool,
baseline: Smart<Length>,
size: Smart<TextSize>,
kind: ScriptKind,
) -> SourceResult<Content> {
let outer_text_size = TextElem::size_in(styles);
Ok(body.styled(TextElem::set_subperscript(Some(ScriptSettings {
typographic,
shift: baseline.map(|l| -l.to_em(outer_text_size)),
size: size.map(|t| t.0.to_em(outer_text_size)),
kind,
}))))
}
/// Configuration values for sub- or superscript text.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
pub struct ScriptSettings {