Add support for WebP images (#6311)

5 files changed, 13 insertions, 3 deletions

diff --git a/crates/typst-ide/src/complete.rs b/crates/typst-ide/src/complete.rs
index 15b4296e..4a36045a 100644
--- a/crates/typst-ide/src/complete.rs
+++ b/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"],
diff --git a/crates/typst-layout/src/image.rs b/crates/typst-layout/src/image.rs
index 3e5b7d8b..8136a25a 100644
--- a/crates/typst-layout/src/image.rs
+++ b/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()),
             _ => {}
         }
     }
diff --git a/crates/typst-library/src/visualize/image/mod.rs b/crates/typst-library/src/visualize/image/mod.rs
index 258eb96f..f9e345e7 100644
--- a/crates/typst-library/src/visualize/image/mod.rs
+++ b/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
diff --git a/crates/typst-library/src/visualize/image/raster.rs b/crates/typst-library/src/visualize/image/raster.rs
index 21d5b18f..54f832ba 100644
--- a/crates/typst-library/src/visualize/image/raster.rs
+++ b/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"),
         })
     }
diff --git a/crates/typst-svg/src/image.rs b/crates/typst-svg/src/image.rs
index d7443202..1868ca39 100644
--- a/crates/typst-svg/src/image.rs
+++ b/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(),
             ),