Coalesce resize layout diagnostics

core/src/ui/painter.rs

@@ -111,6 +111,8 @@ impl<'a> Painter<'a> {
         #[cfg(feature = "layout-diagnostics")]
         diag::bump(Counter::PlaceCalls);
         let region = region.within(&self.region);
+        #[cfg(feature = "layout-diagnostics")]
+        diag::placed(id.id(), self.id, region);
         self.widget_at(id, region, true)
     }
 
@@ -150,6 +152,8 @@ impl<'a> Painter<'a> {
             .widgets()
             .get_dyn(id.id())
             .and_then(|widget| widget.size_hint(axis));
+        #[cfg(feature = "layout-diagnostics")]
+        diag::hint_read(id.id(), self.id, axis, hint);
         match hint {
             Some(hint) => {
                 #[cfg(feature = "layout-diagnostics")]
@@ -262,7 +266,10 @@ pub struct DrawResult<'p, 'a, W: ?Sized> {
 impl<W: ?Sized> DrawResult<'_, '_, W> {
     pub fn size(self) -> Size {
         #[cfg(feature = "layout-diagnostics")]
-        diag::bump(Counter::SizeReads);
+        {
+            diag::bump(Counter::SizeReads);
+            diag::size_read(self.child.id(), self.painter.id, self.size);
+        }
         self.painter.depend_on_size(self.child);
         self.size
     }