Make render background color configurable

3 files changed, 15 insertions, 8 deletions

diff --git a/src/export/render.rs b/src/export/render.rs
index fcf7458a..03160d97 100644
--- a/src/export/render.rs
+++ b/src/export/render.rs
@@ -11,7 +11,7 @@ use usvg::FitTo;
 
 use crate::doc::{Element, Frame, Group, Meta, Text};
 use crate::geom::{
-    self, Abs, Geometry, Paint, PathElement, Shape, Size, Stroke, Transform,
+    self, Abs, Color, Geometry, Paint, PathElement, Shape, Size, Stroke, Transform,
 };
 use crate::image::{DecodedImage, Image};
 
@@ -19,13 +19,13 @@ use crate::image::{DecodedImage, Image};
 ///
 /// This renders the frame at the given number of pixels per point and returns
 /// the resulting `tiny-skia` pixel buffer.
-pub fn render(frame: &Frame, pixel_per_pt: f32) -> sk::Pixmap {
+pub fn render(frame: &Frame, pixel_per_pt: f32, fill: Color) -> sk::Pixmap {
     let size = frame.size();
     let pxw = (pixel_per_pt * size.x.to_f32()).round().max(1.0) as u32;
     let pxh = (pixel_per_pt * size.y.to_f32()).round().max(1.0) as u32;
 
     let mut canvas = sk::Pixmap::new(pxw, pxh).unwrap();
-    canvas.fill(sk::Color::WHITE);
+    canvas.fill(fill.into());
 
     let ts = sk::Transform::from_scale(pixel_per_pt, pixel_per_pt);
     render_frame(&mut canvas, ts, None, frame);
@@ -432,13 +432,19 @@ impl From<Paint> for sk::Paint<'static> {
     fn from(paint: Paint) -> Self {
         let mut sk_paint = sk::Paint::default();
         let Paint::Solid(color) = paint;
-        let c = color.to_rgba();
-        sk_paint.set_color_rgba8(c.r, c.g, c.b, c.a);
+        sk_paint.set_color(color.into());
         sk_paint.anti_alias = true;
         sk_paint
     }
 }
 
+impl From<Color> for sk::Color {
+    fn from(color: Color) -> Self {
+        let c = color.to_rgba();
+        sk::Color::from_rgba8(c.r, c.g, c.b, c.a)
+    }
+}
+
 /// Allows to build tiny-skia paths from glyph outlines.
 struct WrappedPathBuilder(sk::PathBuilder);
 
diff --git a/tests/src/benches.rs b/tests/src/benches.rs
index 1628f32d..242f6e51 100644
--- a/tests/src/benches.rs
+++ b/tests/src/benches.rs
@@ -4,6 +4,7 @@ use comemo::{Prehashed, Track, Tracked};
 use iai::{black_box, main, Iai};
 use typst::diag::{FileError, FileResult};
 use typst::font::{Font, FontBook};
+use typst::geom::Color;
 use typst::model::Library;
 use typst::syntax::{Source, SourceId};
 use typst::util::Buffer;
@@ -95,7 +96,7 @@ fn bench_compile(iai: &mut Iai) {
 fn bench_render(iai: &mut Iai) {
     let world = BenchWorld::new();
     let document = typst::compile(&world, &world.source).unwrap();
-    iai.run(|| typst::export::render(&document.pages[0], 1.0))
+    iai.run(|| typst::export::render(&document.pages[0], 1.0, Color::WHITE))
 }
 
 struct BenchWorld {
diff --git a/tests/src/tests.rs b/tests/src/tests.rs
index 62e6f3f5..c319fe2f 100644
--- a/tests/src/tests.rs
+++ b/tests/src/tests.rs
@@ -14,7 +14,7 @@ use tiny_skia as sk;
 use typst::diag::{bail, FileError, FileResult, SourceResult};
 use typst::doc::{Document, Element, Frame, Meta};
 use typst::font::{Font, FontBook};
-use typst::geom::{Abs, RgbaColor, Sides, Smart};
+use typst::geom::{Abs, Color, RgbaColor, Sides, Smart};
 use typst::model::{func, Library, Value};
 use typst::syntax::{Source, SourceId, Span, SyntaxNode};
 use typst::util::{Buffer, PathExt};
@@ -690,7 +690,7 @@ fn render(frames: &[Frame]) -> sk::Pixmap {
             if frame.width() > limit || frame.height() > limit {
                 panic!("overlarge frame: {:?}", frame.size());
             }
-            typst::export::render(frame, pixel_per_pt)
+            typst::export::render(frame, pixel_per_pt, Color::WHITE)
         })
         .collect();