Replace placement calls with region nodes

core/src/layout_diagnostics.rs

@@ -28,7 +28,7 @@ pub(crate) enum Counter {
     Updates,
     DrawRequests,
     WidgetDraws,
-    PlaceCalls,
+    RegionNodeDraws,
     SizeReads,
     HintHits,
     HintMisses,
@@ -38,7 +38,7 @@ pub(crate) enum Counter {
     ReuseMoved,
     ReuseDirty,
     ReuseWrongParent,
-    ReuseUnslotted,
+    ReuseRemapped,
     ReuseOutside,
     QueuePops,
     DepthReads,
@@ -60,7 +60,7 @@ impl Counter {
         "updates",
         "draw requests",
         "widget draws",
-        "place calls",
+        "region-node draws",
         "draw-result size reads",
         "hint hits",
         "hint misses",
@@ -70,7 +70,7 @@ impl Counter {
         "reuse moved",
         "reuse: dirty",
         "reuse: wrong parent",
-        "reuse: unslotted",
+        "reuse remapped",
         "reuse: outside what it holds for",
         "redraw queue pops",
         "depth reads",
@@ -242,7 +242,7 @@ pub enum ReuseOutcome {
     Moved,
     Dirty,
     WrongParent,
-    Unslotted,
+    Remapped,
     Outside,
     Undrawn,
 }
@@ -256,7 +256,7 @@ pub enum TraceEvent {
         parent: Option<WidgetId>,
         region: UiRegion,
         pixel_size: Vec2,
-        slotted: bool,
+        region_node: bool,
     },
     Reuse {
         id: WidgetId,
@@ -266,7 +266,7 @@ pub enum TraceEvent {
         id: WidgetId,
         size: Size,
     },
-    Placed {
+    RegionNode {
         id: WidgetId,
         parent: WidgetId,
         region: UiRegion,
@@ -352,7 +352,7 @@ pub(crate) fn draw_request(
     parent: Option<WidgetId>,
     region: UiRegion,
     pixel_size: Vec2,
-    slotted: bool,
+    region_node: bool,
 ) {
     trace(
         id,
@@ -361,7 +361,7 @@ pub(crate) fn draw_request(
             parent,
             region,
             pixel_size,
-            slotted,
+            region_node,
         },
     );
 }
@@ -374,8 +374,8 @@ pub(crate) fn size_reported(id: WidgetId, size: Size) {
     trace(id, TraceEvent::SizeReported { id, size });
 }
 
-pub(crate) fn placed(id: WidgetId, parent: WidgetId, region: UiRegion) {
-    trace(id, TraceEvent::Placed { id, parent, region });
+pub(crate) fn region_node(id: WidgetId, parent: WidgetId, region: UiRegion) {
+    trace(id, TraceEvent::RegionNode { id, parent, region });
 }
 
 pub(crate) fn size_read(id: WidgetId, reader: WidgetId, size: Size) {