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This commit is contained in:
Laurenz Stampfl 2024-12-17 11:48:38 +01:00
parent bcfb889844
commit 4e4a4bdafb
2 changed files with 33 additions and 26 deletions
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4
crates/typst-pdf/src/krilla.rs
View File

@ -157,15 +157,19 @@ impl krilla::font::Glyph for PdfGlyph {
}
pub struct GlobalContext<'a> {
/// Cache the conversion between krilla and Typst fonts (forward and backward).
fonts_forward: HashMap<Font, krilla::font::Font>,
fonts_backward: HashMap<krilla::font::Font, Font>,
// Note: In theory, the same image can have multiple spans
// if it appears in the document multiple times. We just store the
// first appearance, though.
/// Mapping between images and their span.
image_spans: HashMap<krilla::image::Image, Span>,
pub(crate) document: &'a PagedDocument,
pub(crate) options: &'a PdfOptions<'a>,
/// Mapping between locations in the document and named destinations.
loc_to_named: HashMap<Location, NamedDestination>,
/// The languages used throughout the document.
languages: BTreeMap<Lang, usize>,
}

55
crates/typst-pdf/src/outline.rs
View File

@ -1,13 +1,14 @@
use std::num::NonZeroUsize;
use krilla::destination::XyzDestination;
use krilla::outline::{Outline, OutlineNode};
use typst_library::foundations::{NativeElement, Packed, StyleChain};
use typst_library::layout::Abs;
use typst_library::model::HeadingElem;
use crate::krilla::GlobalContext;
use crate::util::AbsExt;
/// A heading in the outline panel.
#[derive(Debug)]
struct HeadingNode<'a> {
element: &'a Packed<HeadingElem>,
@ -28,6 +29,30 @@ impl<'a> HeadingNode<'a> {
children: Vec::new(),
}
}
fn to_krilla(&self, gc: &GlobalContext) -> Option<OutlineNode> {
let loc = self.element.location().unwrap();
let title = self.element.body().plain_text().to_string();
let pos = gc.document.introspector.position(loc);
let page_index = pos.page.get() - 1;
if !gc.page_excluded(page_index) {
let y = (pos.point.y - Abs::pt(10.0)).max(Abs::zero());
let dest = XyzDestination::new(
page_index,
krilla::geom::Point::from_xy(pos.point.x.to_f32(), y.to_f32()),
);
let mut outline_node = OutlineNode::new(title, dest);
for child in convert_nodes(&self.children, gc) {
outline_node.push_child(child);
}
return Some(outline_node);
}
None
}
}
pub(crate) fn build_outline(gc: &GlobalContext) -> Outline {
@ -115,35 +140,13 @@ pub(crate) fn build_outline(gc: &GlobalContext) -> Outline {
let mut outline = Outline::new();
for child in convert_heading_nodes(&tree, gc) {
for child in convert_nodes(&tree, gc) {
outline.push_child(child);
}
outline
}
fn convert_heading_nodes(nodes: &[HeadingNode], gc: &GlobalContext) -> Vec<OutlineNode> {
nodes.iter().flat_map(|node| {
let loc = node.element.location().unwrap();
let title = node.element.body().plain_text().to_string();
let pos = gc.document.introspector.position(loc);
let page_index = pos.page.get() - 1;
if !gc.page_excluded(page_index) {
let y = (pos.point.y - Abs::pt(10.0)).max(Abs::zero());
let dest = XyzDestination::new(
page_index,
krilla::geom::Point::from_xy(pos.point.x.to_f32(), y.to_f32()),
);
let mut outline_node = OutlineNode::new(title, dest);
for child in convert_heading_nodes(&node.children, gc) {
outline_node.push_child(child);
}
return Some(outline_node);
}
None
}).collect()
fn convert_nodes(nodes: &[HeadingNode], gc: &GlobalContext) -> Vec<OutlineNode> {
nodes.iter().flat_map(|node| node.to_krilla(gc)).collect()
}