the great orientation refactor (move to x & y UiScalars/Spans) + don't call full size in align

src/core/position/align.rs

@@ -7,8 +7,32 @@ pub struct Aligned {
 
 impl Widget for Aligned {
     fn draw(&mut self, painter: &mut Painter) {
-        let region =
-            UiRegion::from_ui_size_align(painter.size(&self.inner).to_uivec2(), self.align);
+        let region = match self.align {
+            Align {
+                x: Some(x),
+                y: Some(y),
+            } => {
+                painter
+                    .size(&self.inner)
+                    .to_uivec2()
+                    .align(RegionAlign { x, y })
+            }
+            Align {
+                x: Some(x),
+                y: None,
+            } => {
+                let x = painter.size_ctx().width(&self.inner).apply_rest().align(x);
+                UiRegion::new(x, UiSpan::FULL)
+            }
+            Align {
+                x: None,
+                y: Some(y),
+            } => {
+                let y = painter.size_ctx().height(&self.inner).apply_rest().align(y);
+                UiRegion::new(UiSpan::FULL, y)
+            }
+            Align { x: None, y: None } => UiRegion::FULL,
+        };
         painter.widget_within(&self.inner, region);
     }