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refactor: use enum to better convey intent

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This commit is contained in:
Tobias Schmitz 2025-05-07 17:39:03 +02:00
parent 43468ec6ee
commit 0b3df7548e
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2 changed files with 21 additions and 11 deletions
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2
crates/typst-layout/src/inline/shaping.rs
View File

@ -327,7 +327,7 @@ impl<'a> ShapedText<'a> {
offset += width;
}
frame.modify(&FrameModifiers::get_in(self.styles).set_text(self.styles));
frame.modify(&FrameModifiers::for_text_in(self.styles));
frame
}

30
crates/typst-layout/src/modifiers.rs
View File

@ -21,7 +21,8 @@ use typst_library::model::{Destination, LinkElem};
pub struct FrameModifiers {
/// A destination to link to.
dest: Option<Destination>,
expand_text_height: Option<Abs>,
/// Used to determine if the link box should be expanded.
link_kind: LinkKind,
/// Whether the contents of the frame should be hidden.
hidden: bool,
}
@ -31,20 +32,29 @@ impl FrameModifiers {
pub fn get_in(styles: StyleChain) -> Self {
Self {
dest: LinkElem::current_in(styles),
expand_text_height: None,
link_kind: LinkKind::default(),
hidden: HideElem::hidden_in(styles),
}
}
pub fn set_text(mut self, styles: StyleChain) -> Self {
if self.dest.is_some() {
let height = Em::one().resolve(styles);
self.expand_text_height = Some(height);
pub fn for_text_in(styles: StyleChain) -> Self {
let mut modifiers = Self::get_in(styles);
if modifiers.dest.is_some() {
let em = Em::one().resolve(styles);
modifiers.link_kind = LinkKind::Text(em);
}
self
modifiers
}
}
#[derive(Clone, Debug, Default)]
enum LinkKind {
/// Contains the font size.
Text(Abs),
#[default]
Other,
}
/// Applies [`FrameModifiers`].
pub trait FrameModify {
/// Apply the modifiers in-place.
@ -65,9 +75,9 @@ impl FrameModify for Frame {
if let Some(dest) = &modifiers.dest {
let mut pos = Point::zero();
let mut size = self.size();
if let Some(height) = modifiers.expand_text_height {
let expand_top = 0.25 * height;
let expand_bottom = 0.25 * height;
if let LinkKind::Text(em) = modifiers.link_kind {
let expand_top = 0.25 * em;
let expand_bottom = 0.25 * em;
pos.y -= expand_top;
size.y += expand_top + expand_bottom;
}