Apply short fall consistently in math when stretching (#6377)

Cargo.lock

@@ -1215,6 +1215,7 @@ dependencies = [
  "byteorder-lite",
  "color_quant",
  "gif",
+ "image-webp",
  "num-traits",
  "png",
  "zune-core",
@@ -2863,7 +2864,7 @@ dependencies = [
 [[package]]
 name = "typst-assets"
 version = "0.13.1"
-source = "git+https://github.com/typst/typst-assets?rev=ab1295f#ab1295ff896444e51902e03c2669955e1d73604a"
+source = "git+https://github.com/typst/typst-assets?rev=c74e539#c74e539b090070a0c66fd007c550f5b6d3b724bd"
 
 [[package]]
 name = "typst-cli"

Cargo.toml

@@ -32,7 +32,7 @@ typst-svg = { path = "crates/typst-svg", version = "0.13.1" }
 typst-syntax = { path = "crates/typst-syntax", version = "0.13.1" }
 typst-timing = { path = "crates/typst-timing", version = "0.13.1" }
 typst-utils = { path = "crates/typst-utils", version = "0.13.1" }
-typst-assets = { git = "https://github.com/typst/typst-assets", rev = "ab1295f" }
+typst-assets = { git = "https://github.com/typst/typst-assets", rev = "c74e539" }
 typst-dev-assets = { git = "https://github.com/typst/typst-dev-assets", rev = "fddbf8b" }
 arrayvec = "0.7.4"
 az = "1.2"
@@ -69,7 +69,7 @@ icu_provider_adapters = "1.4"
 icu_provider_blob = "1.4"
 icu_segmenter = { version = "1.4", features = ["serde"] }
 if_chain = "1"
-image = { version = "0.25.5", default-features = false, features = ["png", "jpeg", "gif"] }
+image = { version = "0.25.5", default-features = false, features = ["png", "jpeg", "gif", "webp"] }
 indexmap = { version = "2", features = ["serde"] }
 infer = { version = "0.19.0", default-features = false }
 kamadak-exif = "0.6"

crates/typst-ide/src/complete.rs

@@ -841,7 +841,9 @@ fn param_value_completions<'a>(
 /// Returns which file extensions to complete for the given parameter if any.
 fn path_completion(func: &Func, param: &ParamInfo) -> Option<&'static [&'static str]> {
     Some(match (func.name(), param.name) {
-        (Some("image"), "source") => &["png", "jpg", "jpeg", "gif", "svg", "svgz"],
+        (Some("image"), "source") => {
+            &["png", "jpg", "jpeg", "gif", "svg", "svgz", "webp"]
+        }
         (Some("csv"), "source") => &["csv"],
         (Some("plugin"), "source") => &["wasm"],
         (Some("cbor"), "source") => &["cbor"],

crates/typst-layout/src/image.rs

@@ -147,6 +147,7 @@ fn determine_format(source: &DataSource, data: &Bytes) -> StrResult<ImageFormat>
             "jpg" | "jpeg" => return Ok(ExchangeFormat::Jpg.into()),
             "gif" => return Ok(ExchangeFormat::Gif.into()),
             "svg" | "svgz" => return Ok(VectorFormat::Svg.into()),
+            "webp" => return Ok(ExchangeFormat::Webp.into()),
             _ => {}
         }
     }

crates/typst-layout/src/math/accent.rs

@@ -46,7 +46,7 @@ pub fn layout_accent(
     // wide in many case.
     let width = elem.size(styles).relative_to(base.width());
     let short_fall = ACCENT_SHORT_FALL.at(glyph.font_size);
-    let variant = glyph.stretch_horizontal(ctx, width, short_fall);
+    let variant = glyph.stretch_horizontal(ctx, width - short_fall);
     let accent = variant.frame;
     let accent_attach = variant.accent_attach.0;
 

crates/typst-layout/src/math/frac.rs

@@ -110,12 +110,12 @@ fn layout_frac_like(
 
     if binom {
         let mut left = GlyphFragment::new(ctx, styles, '(', span)
-            .stretch_vertical(ctx, height, short_fall);
+            .stretch_vertical(ctx, height - short_fall);
         left.center_on_axis(ctx);
         ctx.push(left);
         ctx.push(FrameFragment::new(styles, frame));
         let mut right = GlyphFragment::new(ctx, styles, ')', span)
-            .stretch_vertical(ctx, height, short_fall);
+            .stretch_vertical(ctx, height - short_fall);
         right.center_on_axis(ctx);
         ctx.push(right);
     } else {

crates/typst-layout/src/math/fragment.rs

@@ -435,13 +435,8 @@ impl GlyphFragment {
     }
 
     /// Try to stretch a glyph to a desired height.
-    pub fn stretch_vertical(
-        self,
-        ctx: &mut MathContext,
-        height: Abs,
-        short_fall: Abs,
-    ) -> VariantFragment {
-        stretch_glyph(ctx, self, height, short_fall, Axis::Y)
+    pub fn stretch_vertical(self, ctx: &mut MathContext, height: Abs) -> VariantFragment {
+        stretch_glyph(ctx, self, height, Axis::Y)
     }
 
     /// Try to stretch a glyph to a desired width.
@@ -449,9 +444,8 @@ impl GlyphFragment {
         self,
         ctx: &mut MathContext,
         width: Abs,
-        short_fall: Abs,
     ) -> VariantFragment {
-        stretch_glyph(ctx, self, width, short_fall, Axis::X)
+        stretch_glyph(ctx, self, width, Axis::X)
     }
 }
 

crates/typst-layout/src/math/mat.rs

@@ -314,7 +314,7 @@ fn layout_delimiters(
 
     if let Some(left) = left {
         let mut left = GlyphFragment::new(ctx, styles, left, span)
-            .stretch_vertical(ctx, target, short_fall);
+            .stretch_vertical(ctx, target - short_fall);
         left.align_on_axis(ctx, delimiter_alignment(left.c));
         ctx.push(left);
     }
@@ -323,7 +323,7 @@ fn layout_delimiters(
 
     if let Some(right) = right {
         let mut right = GlyphFragment::new(ctx, styles, right, span)
-            .stretch_vertical(ctx, target, short_fall);
+            .stretch_vertical(ctx, target - short_fall);
         right.align_on_axis(ctx, delimiter_alignment(right.c));
         ctx.push(right);
     }

crates/typst-layout/src/math/root.rs

@@ -50,7 +50,7 @@ pub fn layout_root(
     // Layout root symbol.
     let target = radicand.height() + thickness + gap;
     let sqrt = GlyphFragment::new(ctx, styles, '√', span)
-        .stretch_vertical(ctx, target, Abs::zero())
+        .stretch_vertical(ctx, target)
         .frame;
 
     // Layout the index.

crates/typst-layout/src/math/stretch.rs

@@ -67,8 +67,7 @@ pub fn stretch_fragment(
     let mut variant = stretch_glyph(
         ctx,
         glyph,
-        stretch.relative_to(relative_to_size),
-        short_fall,
+        stretch.relative_to(relative_to_size) - short_fall,
         axis,
     );
 
@@ -120,7 +119,6 @@ pub fn stretch_glyph(
     ctx: &mut MathContext,
     mut base: GlyphFragment,
     target: Abs,
-    short_fall: Abs,
     axis: Axis,
 ) -> VariantFragment {
     // If the base glyph is good enough, use it.
@@ -128,8 +126,7 @@ pub fn stretch_glyph(
         Axis::X => base.width,
         Axis::Y => base.height(),
     };
-    let short_target = target - short_fall;
-    if short_target <= advance {
+    if target <= advance {
         return base.into_variant();
     }
 
@@ -153,13 +150,13 @@ pub fn stretch_glyph(
     for variant in construction.variants {
         best_id = variant.variant_glyph;
         best_advance = base.font.to_em(variant.advance_measurement).at(base.font_size);
-        if short_target <= best_advance {
+        if target <= best_advance {
             break;
         }
     }
 
     // This is either good or the best we've got.
-    if short_target <= best_advance || construction.assembly.is_none() {
+    if target <= best_advance || construction.assembly.is_none() {
         base.set_id(ctx, best_id);
         return base.into_variant();
     }

crates/typst-layout/src/math/text.rs

@@ -65,19 +65,14 @@ fn layout_inline_text(
         // Small optimization for numbers. Note that this lays out slightly
         // differently to normal text and is worth re-evaluating in the future.
         let mut fragments = vec![];
-        let is_single = text.chars().count() == 1;
         for unstyled_c in text.chars() {
             let c = styled_char(styles, unstyled_c, false);
             let mut glyph = GlyphFragment::new(ctx, styles, c, span);
-            if is_single {
-                // Duplicate what `layout_glyph` does exactly even if it's
-                // probably incorrect here.
             match EquationElem::size_in(styles) {
                 MathSize::Script => glyph.make_script_size(ctx),
                 MathSize::ScriptScript => glyph.make_script_script_size(ctx),
                 _ => {}
             }
-            }
             fragments.push(glyph.into());
         }
         let frame = MathRun::new(fragments).into_frame(styles);
@@ -164,7 +159,7 @@ fn layout_glyph(
         let mut variant = if math_size == MathSize::Display {
             let height = scaled!(ctx, styles, display_operator_min_height)
                 .max(SQRT_2 * glyph.height());
-            glyph.stretch_vertical(ctx, height, Abs::zero())
+            glyph.stretch_vertical(ctx, height)
         } else {
             glyph.into_variant()
         };

crates/typst-layout/src/math/underover.rs

@@ -286,7 +286,7 @@ fn layout_underoverspreader(
     let body_class = body.class();
     let body = body.into_fragment(styles);
     let glyph = GlyphFragment::new(ctx, styles, c, span);
-    let stretched = glyph.stretch_horizontal(ctx, body.width(), Abs::zero());
+    let stretched = glyph.stretch_horizontal(ctx, body.width());
 
     let mut rows = vec![];
     let baseline = match position {

crates/typst-library/src/text/smartquote.rs

@@ -247,8 +247,9 @@ impl<'s> SmartQuotes<'s> {
             "es" if matches!(region, Some("ES") | None) => ("“", "”", "«", "»"),
             "hu" | "pl" | "ro" => ("’", "’", "„", "”"),
             "no" | "nb" | "nn" if alternative => low_high,
-            "no" | "nb" | "nn" | "uk" => ("’", "’", "«", "»"),
+            "no" | "nb" | "nn" => ("’", "’", "«", "»"),
             "ru" => ("„", "“", "«", "»"),
+            "uk" => ("“", "”", "«", "»"),
             "el" => ("‘", "’", "«", "»"),
             "he" => ("’", "’", "”", "”"),
             "hr" => ("‘", "’", "„", "”"),

crates/typst-library/src/visualize/image/mod.rs

@@ -77,8 +77,8 @@ pub struct ImageElem {
     /// [`source`]($image.source) (even then, Typst will try to figure out the
     /// format automatically, but that's not always possible).
     ///
-    /// Supported formats are `{"png"}`, `{"jpg"}`, `{"gif"}`, `{"svg"}` as well
-    /// as raw pixel data. Embedding PDFs as images is
+    /// Supported formats are `{"png"}`, `{"jpg"}`, `{"gif"}`, `{"svg"}`,
+    /// `{"webp"}` as well as raw pixel data. Embedding PDFs as images is
     /// [not currently supported](https://github.com/typst/typst/issues/145).
     ///
     /// When providing raw pixel data as the `source`, you must specify a

crates/typst-library/src/visualize/image/raster.rs

@@ -9,6 +9,7 @@ use ecow::{eco_format, EcoString};
 use image::codecs::gif::GifDecoder;
 use image::codecs::jpeg::JpegDecoder;
 use image::codecs::png::PngDecoder;
+use image::codecs::webp::WebPDecoder;
 use image::{
     guess_format, DynamicImage, ImageBuffer, ImageDecoder, ImageResult, Limits, Pixel,
 };
@@ -77,6 +78,7 @@ impl RasterImage {
                     ExchangeFormat::Jpg => decode(JpegDecoder::new(cursor), icc),
                     ExchangeFormat::Png => decode(PngDecoder::new(cursor), icc),
                     ExchangeFormat::Gif => decode(GifDecoder::new(cursor), icc),
+                    ExchangeFormat::Webp => decode(WebPDecoder::new(cursor), icc),
                 }
                 .map_err(format_image_error)?;
 
@@ -242,6 +244,8 @@ pub enum ExchangeFormat {
     /// Raster format that is typically used for short animated clips. Typst can
     /// load GIFs, but they will become static.
     Gif,
+    /// Raster format that supports both lossy and lossless compression.
+    Webp,
 }
 
 impl ExchangeFormat {
@@ -257,6 +261,7 @@ impl From<ExchangeFormat> for image::ImageFormat {
             ExchangeFormat::Png => image::ImageFormat::Png,
             ExchangeFormat::Jpg => image::ImageFormat::Jpeg,
             ExchangeFormat::Gif => image::ImageFormat::Gif,
+            ExchangeFormat::Webp => image::ImageFormat::WebP,
         }
     }
 }
@@ -269,6 +274,7 @@ impl TryFrom<image::ImageFormat> for ExchangeFormat {
             image::ImageFormat::Png => ExchangeFormat::Png,
             image::ImageFormat::Jpeg => ExchangeFormat::Jpg,
             image::ImageFormat::Gif => ExchangeFormat::Gif,
+            image::ImageFormat::WebP => ExchangeFormat::Webp,
             _ => bail!("format not yet supported"),
         })
     }

crates/typst-svg/src/image.rs

@@ -45,6 +45,7 @@ pub fn convert_image_to_base64_url(image: &Image) -> EcoString {
                     ExchangeFormat::Png => "png",
                     ExchangeFormat::Jpg => "jpeg",
                     ExchangeFormat::Gif => "gif",
+                    ExchangeFormat::Webp => "webp",
                 },
                 raster.data(),
             ),

docs/tutorial/1-writing.md

@@ -69,7 +69,7 @@ the first item of the list above by indenting it.
 
 ## Adding a figure { #figure }
 You think that your report would benefit from a figure. Let's add one. Typst
-supports images in the formats PNG, JPEG, GIF, and SVG. To add an image file to
+supports images in the formats PNG, JPEG, GIF, SVG, and WebP. To add an image file to
 your project, first open the _file panel_ by clicking the box icon in the left
 sidebar. Here, you can see a list of all files in your project. Currently, there
 is only one: The main Typst file you are writing in. To upload another file,

tests/suite/text/smartquote.typ

@@ -46,6 +46,10 @@
 #set text(lang: "ru")
 "Лошадь не ест салат из огурцов" - это была первая фраза, сказанная по 'телефону'.
 
+--- smartquote-uk ---
+#set text(lang: "uk")
+"Кінь не їсть огірковий салат" — перше речення, коли-небудь вимовлене по 'телефону'.
+
 --- smartquote-it ---
 #set text(lang: "it")
 "Il cavallo non mangia insalata di cetrioli" è stata la prima frase pronunciata al 'telefono'.

tests/suite/visualize/image.typ

@@ -243,7 +243,7 @@ A #box(image("/assets/images/tiger.jpg", height: 1cm, width: 80%)) B
 --- image-png-but-pixmap-format ---
 #image(
   read("/assets/images/tiger.jpg", encoding: none),
-  // Error: 11-18 expected "png", "jpg", "gif", dictionary, "svg", or auto
+  // Error: 11-18 expected "png", "jpg", "gif", "webp", dictionary, "svg", or auto
   format: "rgba8",
 )