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Caption position (#1495) (#1496)

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Erik Bünnig 2023-07-06 10:08:53 +02:00 committed by GitHub
parent dca56a8028
commit c4a1bd0055
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1 changed files with 37 additions and 3 deletions
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40
crates/typst-library/src/meta/figure.rs
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@ -86,6 +86,25 @@ pub struct FigureElem {
/// The figure's caption.
pub caption: Option<Content>,
/// The caption's position.
///
/// You can set the caption position to `{top}` or `{bottom}`, defaults to
/// `{bottom}`.
///
/// ```example
/// #figure(
/// table(columns: 2)[A][B],
// caption: [I'm up here],
/// )
/// #figure(
/// table(columns: 2)[A][B],
/// caption: [I'm down here],
/// caption-pos: bottom,
/// )
/// ```
#[default(VerticalAlign(GenAlign::Specific(Align::Bottom)))]
pub caption_pos: VerticalAlign,
/// The kind of the figure this is.
///
/// If set to `{auto}`, the figure will try to automatically determine its
@ -174,6 +193,13 @@ impl Synthesize for FigureElem {
.unwrap_or_else(|| FigureKind::Elem(ImageElem::func()))
});
let caption_pos =
VerticalAlign(GenAlign::Specific(match self.caption_pos(styles) {
VerticalAlign(GenAlign::Specific(Align::Top)) => Align::Top,
VerticalAlign(GenAlign::Specific(Align::Bottom)) => Align::Bottom,
_ => bail!(self.span(), "caption-position can only be top or bottom"),
}));
// Resolve the supplement.
let supplement = match self.supplement(styles) {
Smart::Auto => {
@ -221,6 +247,7 @@ impl Synthesize for FigureElem {
}),
)));
self.push_caption_pos(caption_pos);
self.push_caption(self.caption(styles));
self.push_kind(Smart::Custom(kind));
self.push_supplement(Smart::Custom(Some(Supplement::Content(supplement))));
@ -239,9 +266,16 @@ impl Show for FigureElem {
// Build the caption, if any.
if let Some(caption) = self.full_caption(vt)? {
realized += VElem::weak(self.gap(styles).into()).pack();
realized += caption;
}
let v = VElem::weak(self.gap(styles).into()).pack();
realized = if matches!(
self.caption_pos(styles),
VerticalAlign(GenAlign::Specific(Align::Bottom))
) {
realized + v + caption
} else {
caption + v + realized
}
};
// Wrap the contents in a block.
Ok(BlockElem::new()