Fixed some importing issues since you can use a Shader::Gradient outside a Canvas widget, where it was previously only accessible.

graphics/src/widget/canvas/stroke.rs

@@ -1,6 +1,6 @@
 use iced_native::Color;
-
-use crate::widget::canvas::Gradient;
+use crate::gradient::Gradient;
+use crate::shader::Shader;
 
 /// The style of a stroke.
 #[derive(Debug, Clone)]
@@ -66,6 +66,15 @@ pub enum StrokeStyle<'a> {
     Gradient(&'a Gradient),
 }
 
+impl <'a> Into<Shader> for StrokeStyle<'a> {
+    fn into(self) -> Shader {
+        match self {
+            StrokeStyle::Solid(color) => Shader::Solid(color),
+            StrokeStyle::Gradient(gradient) => gradient.clone().into()
+        }
+    }
+}
+
 /// The shape used at the end of open subpaths when they are stroked.
 #[derive(Debug, Clone, Copy)]
 pub enum LineCap {