fix span sizing (still some layout tho)

src/core/position/span.rs

@@ -34,9 +34,8 @@ impl Widget for Span {
     }
 
     fn desired_size(&mut self, ctx: &mut SizeCtx) -> Size {
-        let mut sums = self.len_sum(ctx);
+        let sums = self.len_sum(ctx);
         let dir_len = if sums.rest == 0.0 && sums.rel == 0.0 {
-            sums.abs += self.gap * self.children.len().saturating_sub(1) as f32;
             sums
         } else {
             Len::default()
@@ -71,7 +70,8 @@ impl Span {
     }
 
     fn len_sum(&mut self, ctx: &mut SizeCtx) -> Len {
-        self.children.iter_mut().fold(Len::ZERO, |mut s, id| {
+        let gap = self.gap * self.children.len().saturating_sub(1) as f32;
+        self.children.iter_mut().fold(Len::abs(gap), |mut s, id| {
             s += ctx.size(id).axis(self.dir.axis);
             s
         })

src/core/sense.rs

@@ -179,7 +179,7 @@ impl<Ctx: UiCtx + 'static> CursorModule<Ctx> {
             let mut sensed = false;
             for (id, shape) in list.iter() {
                 let group = module.map.get_mut(id).unwrap();
-                let region = shape.to_screen(window_size);
+                let region = shape.to_px(window_size);
                 let in_shape = cursor.exists && region.contains(cursor.pos);
                 group.hover.update(in_shape);
                 if group.hover == ActivationState::Off {

src/layout/painter.rs

@@ -387,6 +387,10 @@ impl<'a, 'c> Painter<'a, 'c> {
     pub fn next_layer(&mut self) {
         self.layer = self.ctx.layers.next(self.layer);
     }
+
+    pub fn label(&self) -> &str {
+        &self.ctx.widgets.data(&self.id).unwrap().label
+    }
 }
 
 pub struct SizeCtx<'a> {
@@ -411,9 +415,9 @@ impl SizeCtx<'_> {
         size
     }
     pub fn size<W>(&mut self, id: &WidgetId<W>) -> Size {
-        if let Some(&size) = self.checked.get(&id.id) {
-            return size;
-        }
+        // if let Some(&size) = self.checked.get(&id.id) {
+        //     return size;
+        // }
         self.size_inner(id.id, self.size)
     }
     fn size_raw(&mut self, id: Id) -> Size {

src/layout/pos.rs

@@ -168,6 +168,7 @@ impl_op!(UiScalar Sub sub; rel abs);
 
 impl UiScalar {
     pub const ZERO: Self = Self { rel: 0.0, abs: 0.0 };
+    pub const FULL: Self = Self { rel: 1.0, abs: 0.0 };
 
     pub fn new(rel: f32, abs: f32) -> Self {
         Self { rel, abs }
@@ -272,7 +273,7 @@ impl UiRegion {
         self
     }
 
-    pub fn to_screen(&self, size: Vec2) -> PixelRegion {
+    pub fn to_px(&self, size: Vec2) -> PixelRegion {
         PixelRegion {
             top_left: self.top_left.rel * size + self.top_left.abs,
             bot_right: self.bot_right.rel * size + self.bot_right.abs,
@@ -347,6 +348,12 @@ impl PixelRegion {
     }
 }
 
+impl Display for PixelRegion {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{} -> {}", self.top_left, self.bot_right)
+    }
+}
+
 pub struct UIRegionAxisView<'a> {
     pub top_left: UiScalarView<'a>,
     pub bot_right: UiScalarView<'a>,

src/layout/ui.rs

@@ -181,7 +181,7 @@ impl Ui {
 
     pub fn window_region<W>(&self, id: &impl IdLike<W>) -> Option<PixelRegion> {
         let region = self.data.active.get(&id.id())?.region;
-        Some(region.to_screen(self.data.output_size))
+        Some(region.to_px(self.data.output_size))
     }
 
     pub fn debug(&self, label: &str) {
@@ -192,6 +192,10 @@ impl Ui {
             }
             println!("\"{label}\" {{");
             println!("    region: {}", inst.region);
+            println!(
+                "    pixel region: {}",
+                inst.region.to_px(self.data.output_size)
+            );
             println!("    desired_size: {}", inst.desired_size);
             println!("}}");
         }