Track retained layout validity explicitly

core/src/layout_diagnostics.rs

@@ -26,7 +26,6 @@ use std::{
 #[derive(Clone, Copy)]
 pub(crate) enum Counter {
     Updates,
-    ResizeDependents,
     DrawRequests,
     WidgetDraws,
     PlaceCalls,
@@ -40,13 +39,9 @@ pub(crate) enum Counter {
     ReuseDirty,
     ReuseWrongParent,
     ReuseUnslotted,
-    ReuseOwnResize,
-    ReuseDescendantResize,
-    ResizeChecks,
-    ResizeCheckChildren,
+    ReuseOutside,
     QueuePops,
     DepthReads,
-    EagerReaderRedraws,
     LocalRedraws,
     SizeChanges,
     ReaderEdges,
@@ -63,7 +58,6 @@ impl Counter {
 
     const NAMES: [&'static str; Self::COUNT] = [
         "updates",
-        "resize dependents",
         "draw requests",
         "widget draws",
         "place calls",
@@ -77,13 +71,9 @@ impl Counter {
         "reuse: dirty",
         "reuse: wrong parent",
         "reuse: unslotted",
-        "reuse: own resize",
-        "reuse: descendant resize",
-        "resize checks",
-        "resize children checked",
+        "reuse: outside what it holds for",
         "redraw queue pops",
         "depth reads",
-        "eager reader redraws",
         "local redraws",
         "size changes",
         "reader edges",
@@ -100,7 +90,6 @@ impl Counter {
 pub(crate) enum TimerKind {
     Update,
     FullLayout,
-    ResizeMarking,
     IncrementalLayout,
     TextRender,
     TextShape,
@@ -114,7 +103,6 @@ impl TimerKind {
     const NAMES: [&'static str; Self::COUNT] = [
         "update total",
         "full layout",
-        "resize marking",
         "incremental layout",
         "text render",
         "text shape",
@@ -255,8 +243,8 @@ pub enum ReuseOutcome {
     Dirty,
     WrongParent,
     Unslotted,
-    OwnResize,
-    DescendantResize,
+    Outside,
+    Undrawn,
 }
 
 /// One targeted layout event. Events are retained in execution order, making