Extend border radius on relevant widgets

core/src/border_radius.rs

@@ -0,0 +1,22 @@
+/// The border radii for the corners of a graphics primitive in the order:
+/// top-left, top-right, bottom-right, bottom-left.
+#[derive(Debug, Clone, Copy, PartialEq, Default)]
+pub struct BorderRadius([f32; 4]);
+
+impl From<f32> for BorderRadius {
+    fn from(w: f32) -> Self {
+        Self([w; 4])
+    }
+}
+
+impl From<[f32; 4]> for BorderRadius {
+    fn from(radi: [f32; 4]) -> Self {
+        Self(radi)
+    }
+}
+
+impl From<BorderRadius> for [f32; 4] {
+    fn from(radi: BorderRadius) -> Self {
+        radi.0
+    }
+}

core/src/lib.rs

@@ -44,6 +44,7 @@ pub mod window;
 
 mod angle;
 mod background;
+mod border_radius;
 mod color;
 mod content_fit;
 mod element;
@@ -60,6 +61,7 @@ mod vector;
 pub use alignment::Alignment;
 pub use angle::{Degrees, Radians};
 pub use background::Background;
+pub use border_radius::BorderRadius;
 pub use clipboard::Clipboard;
 pub use color::Color;
 pub use content_fit::ContentFit;

core/src/renderer.rs

@@ -6,7 +6,7 @@ mod null;
 pub use null::Null;
 
 use crate::layout;
-use crate::{Background, Color, Element, Rectangle, Vector};
+use crate::{Background, BorderRadius, Color, Element, Rectangle, Vector};
 
 /// A component that can be used by widgets to draw themselves on a screen.
 pub trait Renderer: Sized {
@@ -60,29 +60,6 @@ pub struct Quad {
     pub border_color: Color,
 }
 
-/// The border radii for the corners of a graphics primitive in the order:
-/// top-left, top-right, bottom-right, bottom-left.
-#[derive(Debug, Clone, Copy, PartialEq, Default)]
-pub struct BorderRadius([f32; 4]);
-
-impl From<f32> for BorderRadius {
-    fn from(w: f32) -> Self {
-        Self([w; 4])
-    }
-}
-
-impl From<[f32; 4]> for BorderRadius {
-    fn from(radi: [f32; 4]) -> Self {
-        Self(radi)
-    }
-}
-
-impl From<BorderRadius> for [f32; 4] {
-    fn from(radi: BorderRadius) -> Self {
-        radi.0
-    }
-}
-
 /// The styling attributes of a [`Renderer`].
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct Style {