Implement Frame::stroke_text in canvas API

Author: hecrj

graphics/src/geometry/frame.rs

@@ -217,6 +217,11 @@ pub trait Backend: Sized {
         size: Size,
         stroke: impl Into<Stroke<'a>>,
     );
+    fn stroke_text<'a>(
+        &mut self,
+        text: impl Into<Text>,
+        stroke: impl Into<Stroke<'a>>,
+    );
 
     fn fill(&mut self, path: &Path, fill: impl Into<Fill>);
     fn fill_text(&mut self, text: impl Into<Text>);
@@ -272,6 +277,12 @@ impl Backend for () {
         _stroke: impl Into<Stroke<'a>>,
     ) {
     }
+    fn stroke_text<'a>(
+        &mut self,
+        _text: impl Into<Text>,
+        _stroke: impl Into<Stroke<'a>>,
+    ) {
+    }
 
     fn fill(&mut self, _path: &Path, _fill: impl Into<Fill>) {}
     fn fill_text(&mut self, _text: impl Into<Text>) {}

renderer/src/fallback.rs

@@ -537,6 +537,14 @@ mod geometry {
             );
         }
 
+        fn stroke_text<'a>(
+            &mut self,
+            text: impl Into<Text>,
+            stroke: impl Into<Stroke<'a>>,
+        ) {
+            delegate!(self, frame, frame.stroke_text(text, stroke));
+        }
+
         fn fill_text(&mut self, text: impl Into<Text>) {
             delegate!(self, frame, frame.fill_text(text));
         }

tiny_skia/src/geometry.rs

@@ -245,6 +245,17 @@ impl geometry::frame::Backend for Frame {
         }
     }
 
+    fn stroke_text<'a>(
+        &mut self,
+        text: impl Into<geometry::Text>,
+        stroke: impl Into<Stroke<'a>>,
+    ) {
+        let text = text.into();
+        let stroke = stroke.into();
+
+        text.draw_with(|path, _color| self.stroke(&path, stroke));
+    }
+
     fn push_transform(&mut self) {
         self.stack.push(self.transform);
     }

wgpu/src/geometry.rs

@@ -291,6 +291,17 @@ impl geometry::frame::Backend for Frame {
             .expect("Stroke rectangle");
     }
 
+    fn stroke_text<'a>(
+        &mut self,
+        text: impl Into<geometry::Text>,
+        stroke: impl Into<Stroke<'a>>,
+    ) {
+        let text = text.into();
+        let stroke = stroke.into();
+
+        text.draw_with(|glyph, _color| self.stroke(&glyph, stroke));
+    }
+
     fn fill_text(&mut self, text: impl Into<geometry::Text>) {
         let text = text.into();