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fix grid.header errors in rowspans

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This commit is contained in:
PgBiel 2025-04-06 01:30:27 -03:00
parent f9569efc40
commit c04dedf470
1 changed files with 35 additions and 18 deletions
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53
crates/typst-layout/src/grid/rowspans.rs
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@ -236,15 +236,12 @@ impl GridLayouter<'_> {
// current row is dynamic and depends on the amount of upcoming
// unbreakable cells (with or without a rowspan setting).
let mut amount_unbreakable_rows = None;
if let Some(Repeatable::NotRepeated(header)) = &self.grid.header {
if current_row < header.end {
// Non-repeated header, so keep it unbreakable.
amount_unbreakable_rows = Some(header.end);
}
}
if let Some(Repeatable::NotRepeated(footer)) = &self.grid.footer {
if current_row >= footer.start {
// Non-repeated footer, so keep it unbreakable.
// TODO: This will become unnecessary once non-repeated
// footers are treated differently and have widow
// prevention.
amount_unbreakable_rows = Some(self.grid.rows.len() - footer.start);
}
}
@ -406,7 +403,8 @@ impl GridLayouter<'_> {
// auto rows don't depend on the backlog, as they only span one
// region.
if breakable
&& (matches!(self.grid.header, Some(Repeatable::Repeated(_)))
&& (!self.repeating_headers.is_empty()
|| !self.pending_headers.is_empty()
|| matches!(self.grid.footer, Some(Repeatable::Repeated(_))))
{
// Subtract header and footer height from all upcoming regions
@ -1172,14 +1170,30 @@ impl<'a> RowspanSimulator<'a> {
// our simulation checks what happens AFTER the auto row, so we can
// just use the original backlog from `self.regions`.
let disambiguator = self.finished;
let header_height =
if let Some(Repeatable::Repeated(header)) = &layouter.grid.header {
let (repeating_headers, header_height) = if !layouter.repeating_headers.is_empty()
|| !layouter.pending_headers.is_empty()
{
// Only repeating headers have survived after the first region
// break.
let repeating_headers = layouter.repeating_headers.iter().map(|h| *h).chain(
layouter
.simulate_header(header, &self.regions, engine, disambiguator)?
.height
} else {
Abs::zero()
};
.pending_headers
.into_iter()
.filter_map(Repeatable::as_repeated),
);
let header_height = layouter.simulate_header_height(
repeating_headers.clone(),
&self.regions,
engine,
disambiguator,
)?;
(Some(repeating_headers), header_height)
} else {
(None, Abs::zero())
};
let footer_height =
if let Some(Repeatable::Repeated(footer)) = &layouter.grid.footer {
@ -1201,13 +1215,16 @@ impl<'a> RowspanSimulator<'a> {
skipped_region = true;
}
if let Some(Repeatable::Repeated(header)) = &layouter.grid.header {
if let Some(repeating_headers) = repeating_headers {
self.header_height = if skipped_region {
// Simulate headers again, at the new region, as
// the full region height may change.
layouter
.simulate_header(header, &self.regions, engine, disambiguator)?
.height
layouter.simulate_header_height(
repeating_headers,
&self.regions,
engine,
disambiguator,
)?
} else {
header_height
};