Color fixes (#2262)

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

@@ -290,11 +290,7 @@ impl Show for RawElem {
 
         let theme = theme.as_deref().unwrap_or(&THEME);
 
-        let foreground = theme
-            .settings
-            .foreground
-            .map(to_typst)
-            .map_or(Color::BLACK, Color::from);
+        let foreground = theme.settings.foreground.unwrap_or(synt::Color::BLACK);
 
         let mut realized = if matches!(lang.as_deref(), Some("typ" | "typst" | "typc")) {
             let root = match lang.as_deref() {
@@ -309,7 +305,7 @@ impl Show for RawElem {
                 vec![],
                 &highlighter,
                 &mut |node, style| {
-                    seq.push(styled(&text[node.range()], foreground.into(), style));
+                    seq.push(styled(&text[node.range()], foreground, style));
                 },
             );
 
@@ -334,7 +330,7 @@ impl Show for RawElem {
                 for (style, piece) in
                     highlighter.highlight_line(line, syntax_set).into_iter().flatten()
                 {
-                    seq.push(styled(piece, foreground.into(), style));
+                    seq.push(styled(piece, foreground, style));
                 }
             }
 
@@ -432,12 +428,11 @@ fn highlight_themed<F>(
 }
 
 /// Style a piece of text with a syntect style.
-fn styled(piece: &str, foreground: Paint, style: synt::Style) -> Content {
+fn styled(piece: &str, foreground: synt::Color, style: synt::Style) -> Content {
     let mut body = TextElem::packed(piece);
 
-    let paint = to_typst(style.foreground).into();
-    if paint != foreground {
-        body = body.styled(TextElem::set_fill(paint));
+    if style.foreground != foreground {
+        body = body.styled(TextElem::set_fill(to_typst(style.foreground).into()));
     }
 
     if style.font_style.contains(synt::FontStyle::BOLD) {

crates/typst/src/export/pdf/color.rs

@@ -199,20 +199,13 @@ impl ColorSpaces {
             writer
                 .icc_profile(srgb, &profile)
                 .n(3)
-                .range([0.0, 1.0, 0.0, 1.0, 0.0, 1.0])
-                .alternate()
-                .srgb();
+                .range([0.0, 1.0, 0.0, 1.0, 0.0, 1.0]);
         }
 
         // Write the gray color space
         if let Some(gray) = self.d65_gray {
             let profile = gray_icc();
-            writer
-                .icc_profile(gray, &profile)
-                .n(1)
-                .range([0.0, 1.0])
-                .alternate()
-                .d65_gray();
+            writer.icc_profile(gray, &profile).n(1).range([0.0, 1.0]);
         }
     }
 }

crates/typst/src/export/pdf/image.rs

@@ -5,7 +5,10 @@ use image::{DynamicImage, GenericImageView, Rgba};
 use pdf_writer::{Filter, Finish};
 
 use super::{deflate, PdfContext, RefExt};
-use crate::image::{ImageKind, RasterFormat, RasterImage};
+use crate::{
+    geom::ColorSpace,
+    image::{ImageKind, RasterFormat, RasterImage},
+};
 
 /// Embed all used images into the PDF.
 #[tracing::instrument(skip_all)]
@@ -33,9 +36,9 @@ pub fn write_images(ctx: &mut PdfContext) {
                 if raster.icc().is_some() {
                     space.icc_based(icc_ref);
                 } else if has_color {
-                    space.device_rgb();
+                    ctx.colors.write(ColorSpace::Srgb, space, &mut ctx.alloc);
                 } else {
-                    space.device_gray();
+                    ctx.colors.write(ColorSpace::D65Gray, space, &mut ctx.alloc);
                 }
 
                 // Add a second gray-scale image containing the alpha values if

crates/typst/src/geom/color.rs

@@ -907,8 +907,9 @@ impl Color {
         }
     }
 
+    /// Returns the color's RGB(A) representation as an array of 8-bit values.
     pub fn to_vec4_u8(&self) -> [u8; 4] {
-        self.to_vec4().map(|x| (x * 255.0).round() as u8)
+        self.to_rgba().to_vec4().map(|x| (x * 255.0).round() as u8)
     }
 
     pub fn to_space(self, space: ColorSpace) -> Self {
@@ -1113,7 +1114,9 @@ impl PartialEq for Color {
             // Lower precision for comparison to avoid rounding errors.
             // Keeps backward compatibility with previous versions of Typst.
             (Self::Rgba(_), Self::Rgba(_)) => self.to_vec4_u8() == other.to_vec4_u8(),
-            (Self::Luma(a), Self::Luma(b)) => a == b,
+            (Self::Luma(a), Self::Luma(b)) => {
+                (a.luma * 255.0).round() as u8 == (b.luma * 255.0).round() as u8
+            }
             (Self::Oklab(a), Self::Oklab(b)) => a == b,
             (Self::LinearRgb(a), Self::LinearRgb(b)) => a == b,
             (Self::Cmyk(a), Self::Cmyk(b)) => a == b,

tests/typ/bugs/raw-color-overwrite.typ

@@ -0,0 +1,13 @@
+// Test that the color of a raw block is not overwritten
+
+---
+
+#show raw: set text(fill: blue)
+
+`Hello, World!`
+
+```rs
+fn main() {
+    println!("Hello, World!");
+}
+```