Use correct fill rule when rendering SVG paths (#1606)

* Use correct fill rule when rendering SVG paths

* Update CHANGELOG.md

CHANGELOG.md

@@ -35,6 +35,7 @@ You can find its changes [documented below](#070---2021-01-01).
 ### Fixed
 
 - Fixed docs of derived Lens ([#1523] by [@Maan2003])
+- Use correct fill rule when rendering SVG paths ([#1606] by [@SecondFlight])
 
 ### Visual
 
@@ -420,6 +421,7 @@ Last release without a changelog :(
 [@lassipulkkinen]: https://github.com/lassipulkkinen
 [@Poignardazur]: https://github.com/PoignardAzur
 [@HoNile]: https://github.com/HoNile
+[@SecondFlight]: https://github.com/SecondFlight
 
 [#599]: https://github.com/linebender/druid/pull/599
 [#611]: https://github.com/linebender/druid/pull/611
@@ -622,6 +624,7 @@ Last release without a changelog :(
 [#1592]: https://github.com/linebender/druid/pull/1592
 [#1596]: https://github.com/linebender/druid/pull/1596
 [#1600]: https://github.com/linebender/druid/pull/1600
+[#1606]: https://github.com/linebender/druid/pull/1606
 
 [Unreleased]: https://github.com/linebender/druid/compare/v0.7.0...master
 [0.7.0]: https://github.com/linebender/druid/compare/v0.6.0...v0.7.0

druid/src/widget/svg.rs

@@ -281,7 +281,11 @@ impl SvgRenderer {
         match &p.fill {
             Some(fill) => {
                 let brush = self.brush_from_usvg(&fill.paint, fill.opacity, ctx);
-                ctx.fill(path.clone(), &*brush);
+                if let usvg::FillRule::EvenOdd = fill.rule {
+                    ctx.fill_even_odd(path.clone(), &*brush);
+                } else {
+                    ctx.fill(path.clone(), &*brush);
+                }
             }
             None => {}
         }