fix: impl Layout for Measure

output/src/space/space_measure.rs

@@ -2,28 +2,30 @@ use crate::*;
 
 /// A widget that tracks its render width and height
 #[derive(Default)]
-pub struct Measure<E: Out> {
-    _engine: PhantomData<E>,
+pub struct Measure<O: Out> {
+    _engine: PhantomData<O>,
     pub x: Arc<AtomicUsize>,
     pub y: Arc<AtomicUsize>,
 }
 
-impl<E: Out> PartialEq for Measure<E> {
+impl<O: Out> PartialEq for Measure<O> {
     fn eq (&self, other: &Self) -> bool {
         self.x.load(Relaxed) == other.x.load(Relaxed) &&
             self.y.load(Relaxed) == other.y.load(Relaxed)
     }
 }
 
+impl<O: Out> Layout<O> for Measure<O> {}
+
 // TODO: 🡘  🡙 ←🡙→ indicator to expand window when too small
-impl<E: Out> Draw<E> for Measure<E> {
-    fn draw (&self, to: &mut E) {
+impl<O: Out> Draw<O> for Measure<O> {
+    fn draw (&self, to: &mut O) {
         self.x.store(to.area().w().into(), Relaxed);
         self.y.store(to.area().h().into(), Relaxed);
     }
 }
 
-impl<E: Out> Clone for Measure<E> {
+impl<O: Out> Clone for Measure<O> {
     fn clone (&self) -> Self {
         Self {
             _engine: Default::default(),
@@ -33,7 +35,7 @@ impl<E: Out> Clone for Measure<E> {
     }
 }
 
-impl<E: Out> std::fmt::Debug for Measure<E> {
+impl<O: Out> std::fmt::Debug for Measure<O> {
     fn fmt (&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
         f.debug_struct("Measure")
             .field("width",  &self.x)
@@ -42,7 +44,7 @@ impl<E: Out> std::fmt::Debug for Measure<E> {
     }
 }
 
-impl<E: Out> Measure<E> {
+impl<O: Out> Measure<O> {
     pub fn new () -> Self {
         Self {
             _engine: PhantomData::default(),
@@ -75,7 +77,7 @@ impl<E: Out> Measure<E> {
     pub fn format (&self) -> Arc<str> {
         format!("{}x{}", self.w(), self.h()).into()
     }
-    pub fn of <T: Draw<E>> (&self, item: T) -> Bsp<Fill<&Self>, T> {
+    pub fn of <T: Draw<O>> (&self, item: T) -> Bsp<Fill<&Self>, T> {
         Bsp::b(Fill::XY(self), item)
     }
 }