Rework size resolution

examples/egui-example/src/main.rs

@@ -28,7 +28,7 @@ fn my_layout_fn(ui: &mut Ui) -> Node<Ui> {
             row_spaced(
                 10.,
                 vec![
-                    draw_b(ui).min_width(200.),
+                    draw_b(ui).width_range(200.0..),
                     column_spaced(10., vec![draw_a(ui), draw_b(ui), draw_c(ui)]),
                 ],
             ),

src/anynode.rs

@@ -1,11 +1,12 @@
-use crate::models::Area;
+use crate::{layout::SizeConstraints, models::Area};
 use std::{any::Any, fmt, rc::Rc};
 
 type AnyDrawFn<State> = Rc<dyn Fn(&dyn Any, &mut State)>;
 pub(crate) struct AnyNode<State> {
     pub(crate) inner: Box<dyn Any>,
     pub(crate) clone: fn(&Box<dyn Any>) -> Box<dyn Any>,
     pub(crate) layout: fn(&mut dyn Any, Area),
+    pub(crate) sizes: fn(&dyn Any) -> SizeConstraints,
     pub(crate) draw: AnyDrawFn<State>,
 }
 
@@ -17,6 +18,10 @@ impl<State> AnyNode<State> {
     pub(crate) fn layout(&mut self, available_area: Area) {
         (self.layout)(&mut *self.inner, available_area)
     }
+
+    pub(crate) fn sizes(&self) -> SizeConstraints {
+        (self.sizes)(&*self.inner)
+    }
 }
 
 impl<State> Clone for AnyNode<State> {
@@ -25,6 +30,7 @@ impl<State> Clone for AnyNode<State> {
             inner: (self.clone)(&self.inner),
             clone: self.clone,
             layout: self.layout,
+            sizes: self.sizes,
             draw: self.draw.clone(),
         }
     }