Merge 06bc7bac6694d63459b39844782aca50ddee8d6e into 9a6268050fb769e18c4889fa5f59d4150e8878d6

crates/typst-html/src/convert.rs

@@ -109,10 +109,7 @@ fn handle(
             styles.chain(&style),
             Region::new(Size::splat(Abs::inf()), Axes::splat(false)),
         )?;
-        output.push(HtmlNode::Frame(HtmlFrame {
-            inner: frame,
-            text_size: styles.resolve(TextElem::size),
-        }));
+        output.push(HtmlNode::Frame(HtmlFrame::new(frame, styles)));
     } else {
         engine.sink.warn(warning!(
             child.span(),

crates/typst-html/src/dom.rs

@@ -2,10 +2,11 @@ use std::fmt::{self, Debug, Display, Formatter};
 
 use ecow::{EcoString, EcoVec};
 use typst_library::diag::{bail, HintedStrResult, StrResult};
-use typst_library::foundations::{cast, Dict, Repr, Str};
+use typst_library::foundations::{cast, Dict, Repr, Str, StyleChain};
 use typst_library::introspection::{Introspector, Tag};
 use typst_library::layout::{Abs, Frame};
 use typst_library::model::DocumentInfo;
+use typst_library::text::TextElem;
 use typst_syntax::Span;
 use typst_utils::{PicoStr, ResolvedPicoStr};
 
@@ -279,3 +280,10 @@ pub struct HtmlFrame {
     /// consistently.
     pub text_size: Abs,
 }
+
+impl HtmlFrame {
+    /// Wraps a laid-out frame.
+    pub fn new(inner: Frame, styles: StyleChain) -> Self {
+        Self { inner, text_size: styles.resolve(TextElem::size) }
+    }
+}

crates/typst-html/src/encode.rs

@@ -121,6 +121,7 @@ fn write_children(w: &mut Writer, element: &HtmlElement) -> SourceResult<()> {
     let pretty_inside = allows_pretty_inside(element.tag)
         && element.children.iter().any(|node| match node {
             HtmlNode::Element(child) => wants_pretty_around(child.tag),
+            HtmlNode::Frame(_) => true,
             _ => false,
         });
 
@@ -305,14 +306,6 @@ fn write_escape(w: &mut Writer, c: char) -> StrResult<()> {
 
 /// Encode a laid out frame into the writer.
 fn write_frame(w: &mut Writer, frame: &HtmlFrame) {
-    // FIXME: This string replacement is obviously a hack.
-    let svg = typst_svg::svg_frame(&frame.inner).replace(
-        "<svg class",
-        &format!(
-            "<svg style=\"overflow: visible; width: {}em; height: {}em;\" class",
-            frame.inner.width() / frame.text_size,
-            frame.inner.height() / frame.text_size,
-        ),
-    );
+    let svg = typst_svg::svg_html_frame(&frame.inner, frame.text_size);
     w.buf.push_str(&svg);
 }

crates/typst-library/src/foundations/dict.rs

@@ -3,15 +3,17 @@ use std::hash::{Hash, Hasher};
 use std::ops::{Add, AddAssign};
 use std::sync::Arc;
 
+use comemo::Tracked;
 use ecow::{eco_format, EcoString};
 use indexmap::IndexMap;
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use typst_syntax::is_ident;
 use typst_utils::ArcExt;
 
-use crate::diag::{Hint, HintedStrResult, StrResult};
+use crate::diag::{Hint, HintedStrResult, SourceResult, StrResult};
+use crate::engine::Engine;
 use crate::foundations::{
-    array, cast, func, repr, scope, ty, Array, Module, Repr, Str, Value,
+    array, cast, func, repr, scope, ty, Array, Context, Func, Module, Repr, Str, Value,
 };
 
 /// Create a new [`Dict`] from key-value pairs.
@@ -254,6 +256,101 @@ impl Dict {
             .map(|(k, v)| Value::Array(array![k.clone(), v.clone()]))
             .collect()
     }
+
+    /// Produces a new dictionary or array by transforming each key-value pair with the given function.
+    ///
+    /// If the mapper function returns a pair (array of length 2), the result will be a new dictionary.
+    /// Otherwise, the result will be an array containing all mapped values.
+    ///
+    /// ```example
+    /// #let prices = (apples: 2, oranges: 3, bananas: 1.5)
+    /// #prices.map(pair => pair.at(0).len())
+    /// #prices.map((key, value) => (key, value * 1.1))
+    /// ```
+    #[func]
+    pub fn map(
+        self,
+        engine: &mut Engine,
+        context: Tracked<Context>,
+        /// The function to apply to each key-value pair.
+        /// The function can either take a single parameter (receiving a pair as array of length 2),
+        /// or two parameters (receiving key and value separately).
+        /// Parameters exceeding two will be ignored.
+        mapper: Func,
+    ) -> SourceResult<Value> {
+        let mut dict_result = IndexMap::new();
+        let mut array_result = Vec::new();
+        let mut is_dict = true;
+
+        // try to check the number of parameters, if not, use array form
+        let mut first_pair = true;
+        let mut use_single_arg = false;
+
+        for (key, value) in self {
+            let mapped = if first_pair {
+                // try two calling ways for the first pair
+                first_pair = false;
+
+                // try to call with two parameters
+                let result = mapper.call(
+                    engine,
+                    context,
+                    [Value::Str(key.clone()), value.clone()],
+                );
+
+                // if failed, try to call with one parameter
+                if result.is_err() {
+                    use_single_arg = true;
+                    mapper.call(
+                        engine,
+                        context,
+                        [Value::Array(array![Value::Str(key.clone()), value])],
+                    )?
+                } else {
+                    result?
+                }
+            } else if use_single_arg {
+                // try to call with one parameter
+                mapper.call(
+                    engine,
+                    context,
+                    [Value::Array(array![Value::Str(key.clone()), value])],
+                )?
+            } else {
+                // try to call with two parameters
+                mapper.call(engine, context, [Value::Str(key.clone()), value.clone()])?
+            };
+
+            // check if the result is a dictionary key-value pair
+            if let Value::Array(arr) = &mapped {
+                if arr.len() == 2 {
+                    if let Value::Str(k) = &arr.as_slice()[0] {
+                        if is_dict {
+                            dict_result.insert(k.clone(), arr.as_slice()[1].clone());
+                            continue;
+                        }
+                    }
+                }
+            }
+
+            // if the result is not a key-value pair, switch the result type to array
+            if is_dict {
+                is_dict = false;
+                // convert the collected dictionary result to array items
+                for (k, v) in dict_result.drain(..) {
+                    array_result.push(Value::Array(array![Value::Str(k), v]));
+                }
+            }
+
+            array_result.push(mapped);
+        }
+
+        if is_dict {
+            Ok(Value::Dict(Dict::from(dict_result)))
+        } else {
+            Ok(Value::Array(array_result.into_iter().collect()))
+        }
+    }
 }
 
 /// A value that can be cast to dictionary.

crates/typst-svg/src/lib.rs

@@ -45,6 +45,30 @@ pub fn svg_frame(frame: &Frame) -> String {
     renderer.finalize()
 }
 
+/// Export a frame into an SVG suitable for embedding into HTML.
+#[typst_macros::time(name = "svg html frame")]
+pub fn svg_html_frame(frame: &Frame, text_size: Abs) -> String {
+    let mut renderer = SVGRenderer::with_options(xmlwriter::Options {
+        indent: xmlwriter::Indent::None,
+        ..Default::default()
+    });
+    renderer.write_header_with_custom_attrs(frame.size(), |xml| {
+        xml.write_attribute("class", "typst-frame");
+        xml.write_attribute_fmt(
+            "style",
+            format_args!(
+                "overflow: visible; width: {}em; height: {}em;",
+                frame.width() / text_size,
+                frame.height() / text_size,
+            ),
+        );
+    });
+
+    let state = State::new(frame.size(), Transform::identity());
+    renderer.render_frame(state, Transform::identity(), frame);
+    renderer.finalize()
+}
+
 /// Export a document with potentially multiple pages into a single SVG file.
 ///
 /// The padding will be added around and between the individual frames.
@@ -158,8 +182,13 @@ impl State {
 impl SVGRenderer {
     /// Create a new SVG renderer with empty glyph and clip path.
     fn new() -> Self {
+        Self::with_options(Default::default())
+    }
+
+    /// Create a new SVG renderer with the given configuration.
+    fn with_options(options: xmlwriter::Options) -> Self {
         SVGRenderer {
-            xml: XmlWriter::new(xmlwriter::Options::default()),
+            xml: XmlWriter::new(options),
             glyphs: Deduplicator::new('g'),
             clip_paths: Deduplicator::new('c'),
             gradient_refs: Deduplicator::new('g'),
@@ -170,11 +199,22 @@ impl SVGRenderer {
         }
     }
 
-    /// Write the SVG header, including the `viewBox` and `width` and `height`
-    /// attributes.
+    /// Write the default SVG header, including a `typst-doc` class, the
+    /// `viewBox` and `width` and `height` attributes.
     fn write_header(&mut self, size: Size) {
+        self.write_header_with_custom_attrs(size, |xml| {
+            xml.write_attribute("class", "typst-doc");
+        });
+    }
+
+    /// Write the SVG header with additional attributes and standard attributes.
+    fn write_header_with_custom_attrs(
+        &mut self,
+        size: Size,
+        write_custom_attrs: impl FnOnce(&mut XmlWriter),
+    ) {
         self.xml.start_element("svg");
-        self.xml.write_attribute("class", "typst-doc");
+        write_custom_attrs(&mut self.xml);
         self.xml.write_attribute_fmt(
             "viewBox",
             format_args!("0 0 {} {}", size.x.to_pt(), size.y.to_pt()),

tests/ref/html/html-frame.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+  </head>
+  <body>
+    <p>A rectangle:</p>
+    <svg class="typst-frame" style="overflow: visible; width: 4.5em; height: 3em;" viewBox="0 0 45 30" width="45pt" height="30pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:h5="http://www.w3.org/1999/xhtml"><g><g transform="translate(-0 -0)"><path class="typst-shape" fill="none" stroke="#000000" stroke-width="1" stroke-linecap="butt" stroke-linejoin="miter" stroke-miterlimit="4" d="M 0 0 L 0 30 L 45 30 L 45 0 Z "/></g></g></svg>
+  </body>
+</html>

tests/suite/foundations/dict.typ

@@ -23,6 +23,34 @@
   test(world, "world")
 }
 
+--- dict-map ---
+// Test the map function
+#let dict = (a: 1, b: 2, c: 3)
+
+// test map return new dict
+#test(
+  dict.map((key, value) => (key, value * 2)),
+  (a: 2, b: 4, c: 6)
+)
+
+// test map empty dict
+#test(
+  (:).map((key, value) => (key, value * 2)),
+  (:)
+)
+
+// test map return array
+#test(
+  dict.map(pair => pair.at(0) + ": " + str(pair.at(1))),
+  ("a: 1", "b: 2", "c: 3")
+)
+
+// test map return array(different return type)
+#test(
+  dict.map((key, value) => if value > 1 { (key, value * 2) } else { "key smaller than 1: " + key }),
+  ("key smaller than 1: a", ("b", 4), ("c", 6))
+)
+
 --- dict-missing-field ---
 // Error: 6-13 dictionary does not contain key "invalid"
 #(:).invalid

tests/suite/html/frame.typ

@@ -1,5 +1,6 @@
-// No proper HTML tests here yet because we don't want to test SVG export just
-// yet. We'll definitely add tests at some point.
+--- html-frame html ---
+A rectangle:
+#html.frame(rect())
 
 --- html-frame-in-layout ---
 // Ensure that HTML frames are transparent in layout. This is less important for