separate state from rsc

src/widget/position/span.rs

@@ -159,15 +159,15 @@ pub struct SpanBuilder<State, const LEN: usize, Wa: WidgetArrLike<State, LEN, Ta
     _pd: PhantomData<(State, Tag)>,
 }
 
-impl<State: StateLike<State>, const LEN: usize, Wa: WidgetArrLike<State, LEN, Tag>, Tag>
-    WidgetFnTrait<State> for SpanBuilder<State, LEN, Wa, Tag>
+impl<Rsc, const LEN: usize, Wa: WidgetArrLike<Rsc, LEN, Tag>, Tag> WidgetFnTrait<Rsc>
+    for SpanBuilder<Rsc, LEN, Wa, Tag>
 {
     type Widget = Span;
 
     #[track_caller]
-    fn run(self, state: &mut State) -> Self::Widget {
+    fn run(self, rsc: &mut Rsc) -> Self::Widget {
         Span {
-            children: self.children.add(state).arr.into_iter().collect(),
+            children: self.children.add(rsc).arr.into_iter().collect(),
             dir: self.dir,
             gap: self.gap,
         }