idek stuff like stack

src/core/rect.rs

@@ -1,4 +1,4 @@
-use crate::{Painter, UiColor, Widget, primitive::RoundedRectData};
+use crate::{primitive::RoundedRectData, Painter, UiNum, UiColor, Widget};
 
 #[derive(Clone, Copy)]
 pub struct Rect {
@@ -21,6 +21,10 @@ impl Rect {
         self.color = color;
         self
     }
+    pub fn radius(mut self, radius: impl UiNum) -> Self {
+        self.radius = radius.to_f32();
+        self
+    }
 }
 
 impl<Ctx> Widget<Ctx> for Rect {