app work?

src/layout/orientation.rs

@@ -1,7 +1,7 @@
 use std::ops::Not;
 
 use crate::{
-    layout::{UiNum, UiVec2, Vec2, vec2},
+    layout::{UiNum, UiScalar, UiVec2, Vec2, vec2},
     util::impl_op,
 };
 
@@ -143,17 +143,8 @@ impl Size {
         }
     }
 
-    pub fn to_uivec2(self) -> UiVec2 {
-        UiVec2 {
-            rel: Vec2 {
-                x: self.x.total_rel(),
-                y: self.y.total_rel(),
-            },
-            abs: Vec2 {
-                x: self.x.abs,
-                y: self.y.abs,
-            },
-        }
+    pub fn to_uivec2(self, rel_len: Vec2) -> UiVec2 {
+        UiVec2::from_scalars(self.x.apply_rest(rel_len.x), self.y.apply_rest(rel_len.y))
     }
 
     pub fn from_axis(axis: Axis, aligned: Len, ortho: Len) -> Self {
@@ -184,13 +175,17 @@ impl Len {
         rest: 0.0,
     };
 
-    pub fn total_rel(&self) -> f32 {
-        if self.rest > 0.0 {
-            self.rel.max(1.0)
-        } else {
-            self.rel
+    pub fn apply_rest(&self, rel_len: f32) -> UiScalar {
+        UiScalar {
+            rel: if self.rest > 0.0 {
+                self.rel.max(1.0)
+            } else {
+                self.rel
+            } * rel_len,
+            abs: if self.rest > 0.0 { 0.0 } else { self.abs },
         }
     }
+
     pub fn abs(abs: impl UiNum) -> Self {
         Self {
             abs: abs.to_f32(),