mistakes were fixed and sins were committed

src/core/position/sized.rs

@@ -6,22 +6,35 @@ pub struct Sized {
     pub y: Option<Len>,
 }
 
+impl Sized {
+    fn apply_to_outer(&self, ctx: &mut SizeCtx) {
+        if let Some(x) = self.x {
+            let outer = ctx.outer.axis(Axis::X);
+            ctx.outer
+                .axis_mut(Axis::X)
+                .set(x.apply_rest().within_len(outer));
+        }
+        if let Some(y) = self.y {
+            let outer = ctx.outer.axis(Axis::Y);
+            ctx.outer
+                .axis_mut(Axis::Y)
+                .set(y.apply_rest().within_len(outer));
+        }
+    }
+}
+
 impl Widget for Sized {
     fn draw(&mut self, painter: &mut Painter) {
         painter.widget(&self.inner);
     }
 
-    fn desired_size(&mut self, ctx: &mut SizeCtx) -> Size {
-        let rel = ctx.size.rel;
-        if let Some(x) = self.x {
-            ctx.size.axis_mut(Axis::X).set(x.apply_rest(rel.x));
-        }
-        if let Some(y) = self.y {
-            ctx.size.axis_mut(Axis::Y).set(y.apply_rest(rel.y));
-        }
-        Size {
-            x: self.x.unwrap_or_else(|| ctx.size(&self.inner).x),
-            y: self.y.unwrap_or_else(|| ctx.size(&self.inner).y),
-        }
+    fn desired_width(&mut self, ctx: &mut SizeCtx) -> Len {
+        self.apply_to_outer(ctx);
+        self.x.unwrap_or_else(|| ctx.width(&self.inner))
+    }
+
+    fn desired_height(&mut self, ctx: &mut SizeCtx) -> Len {
+        self.apply_to_outer(ctx);
+        self.y.unwrap_or_else(|| ctx.height(&self.inner))
     }
 }