Write PDF outline

5 files changed, 24 insertions, 11 deletions

diff --git a/library/src/lib.rs b/library/src/lib.rs
index caf76ded..ccdf448c 100644
--- a/library/src/lib.rs
+++ b/library/src/lib.rs
@@ -211,6 +211,7 @@ fn items() -> LangItems {
         },
         bibliography_keys: meta::BibliographyElem::keys,
         heading: |level, title| meta::HeadingElem::new(title).with_level(level).pack(),
+        heading_func: meta::HeadingElem::func(),
         list_item: |body| layout::ListItem::new(body).pack(),
         enum_item: |number, body| {
             let mut elem = layout::EnumItem::new(body);
diff --git a/library/src/meta/figure.rs b/library/src/meta/figure.rs
index 42b32c9d..1f1499fc 100644
--- a/library/src/meta/figure.rs
+++ b/library/src/meta/figure.rs
@@ -173,14 +173,14 @@ impl Synthesize for FigureElem {
         // Determine the figure's kind.
         let kind = match self.kind(styles) {
             Smart::Auto => self
-                .find_figurable(vt, styles)
+                .find_figurable(styles)
                 .map(|elem| FigureKind::Elem(elem.func()))
                 .unwrap_or_else(|| FigureKind::Elem(ImageElem::func())),
             Smart::Custom(kind) => kind,
         };
 
         let content = match &kind {
-            FigureKind::Elem(func) => self.find_of_elem(vt, *func),
+            FigureKind::Elem(func) => self.find_of_elem(*func),
             FigureKind::Name(_) => None,
         }
         .unwrap_or_else(|| self.body());
@@ -303,9 +303,9 @@ impl Refable for FigureElem {
 impl FigureElem {
     /// Determines the type of the figure by looking at the content, finding all
     /// [`Figurable`] elements and sorting them by priority then returning the highest.
-    pub fn find_figurable(&self, vt: &Vt, styles: StyleChain) -> Option<Content> {
+    pub fn find_figurable(&self, styles: StyleChain) -> Option<Content> {
         self.body()
-            .query(vt.introspector, Selector::can::<dyn Figurable>())
+            .query(Selector::can::<dyn Figurable>())
             .into_iter()
             .max_by_key(|elem| elem.with::<dyn Figurable>().unwrap().priority(styles))
             .cloned()
@@ -313,9 +313,9 @@ impl FigureElem {
 
     /// Finds the element with the given function in the figure's content.
     /// Returns `None` if no element with the given function is found.
-    pub fn find_of_elem(&self, vt: &Vt, func: ElemFunc) -> Option<Content> {
+    pub fn find_of_elem(&self, func: ElemFunc) -> Option<Content> {
         self.body()
-            .query(vt.introspector, Selector::Elem(func, None))
+            .query(Selector::Elem(func, None))
             .into_iter()
             .next()
             .cloned()
diff --git a/library/src/prelude.rs b/library/src/prelude.rs
index fc71e2c2..cb21a732 100644
--- a/library/src/prelude.rs
+++ b/library/src/prelude.rs
@@ -23,9 +23,9 @@ pub use typst::geom::*;
 #[doc(no_inline)]
 pub use typst::model::{
     element, Behave, Behaviour, Construct, Content, ElemFunc, Element, Finalize, Fold,
-    Introspector, Label, Locatable, LocatableSelector, Location, MetaElem, Resolve,
-    Selector, Set, Show, StabilityProvider, StyleChain, StyleVec, Styles, Synthesize,
-    Unlabellable, Vt,
+    Introspector, Label, Locatable, LocatableSelector, Location, MetaElem, PlainText,
+    Resolve, Selector, Set, Show, StabilityProvider, StyleChain, StyleVec, Styles,
+    Synthesize, Unlabellable, Vt,
 };
 #[doc(no_inline)]
 pub use typst::syntax::{Span, Spanned};
diff --git a/library/src/text/misc.rs b/library/src/text/misc.rs
index e1d9c0f2..a707d130 100644
--- a/library/src/text/misc.rs
+++ b/library/src/text/misc.rs
@@ -5,7 +5,7 @@ use crate::prelude::*;
 ///
 /// Display: Space
 /// Category: text
-#[element(Unlabellable, Behave)]
+#[element(Behave, Unlabellable, PlainText)]
 pub struct SpaceElem {}
 
 impl Behave for SpaceElem {
@@ -16,6 +16,12 @@ impl Behave for SpaceElem {
 
 impl Unlabellable for SpaceElem {}
 
+impl PlainText for SpaceElem {
+    fn plain_text(&self, text: &mut EcoString) {
+        text.push(' ');
+    }
+}
+
 /// Inserts a line break.
 ///
 /// Advances the paragraph to the next line. A single trailing line break at the
diff --git a/library/src/text/mod.rs b/library/src/text/mod.rs
index 16268aad..f4b3c0de 100644
--- a/library/src/text/mod.rs
+++ b/library/src/text/mod.rs
@@ -40,7 +40,7 @@ use crate::prelude::*;
 ///
 /// Display: Text
 /// Category: text
-#[element(Construct)]
+#[element(Construct, PlainText)]
 pub struct TextElem {
     /// A prioritized sequence of font families.
     ///
@@ -497,6 +497,12 @@ impl Construct for TextElem {
     }
 }
 
+impl PlainText for TextElem {
+    fn plain_text(&self, text: &mut EcoString) {
+        text.push_str(&self.text());
+    }
+}
+
 /// A lowercased font family like "arial".
 #[derive(Clone, Eq, PartialEq, Hash)]
 pub struct FontFamily(EcoString);