UI debugging

crates/bevy_ui/src/flex/mod.rs

@@ -171,6 +171,7 @@ without UI components as a child of an entity with UI components, results may be
                 }
             }
             if !contains {
+                info!("added window roots");
                 let new_root = self
                     .stretch
                     .new_node(stretch::style::Style::default(), vec![*child])
@@ -240,6 +241,7 @@ pub fn flex_node_system(
         Flags<Transform>,
     )>,
 ) {
+    info!("flex_node_system");
     // assume one window for time being...
     let logical_to_physical_factor = if let Some(primary_window) = windows.get_primary() {
         primary_window.scale_factor()
@@ -248,6 +250,7 @@ pub fn flex_node_system(
     };
 
     if scale_factor_reader.latest(&scale_factor_events).is_some() {
+        info!("changed scale factor");
         update_changed(
             &mut *flex_surface,
             logical_to_physical_factor,
@@ -266,6 +269,7 @@ pub fn flex_node_system(
     {
         // update changed nodes
         for (entity, style, calculated_size) in query.iter() {
+            info!("changed style {:?}", entity);
             // TODO: remove node from old hierarchy if its root has changed
             if let Some(calculated_size) = calculated_size {
                 flex_surface.upsert_leaf(entity, &style, *calculated_size, scaling_factor);
@@ -276,6 +280,7 @@ pub fn flex_node_system(
     }
 
     for (entity, style, calculated_size) in changed_size_query.iter() {
+        info!("changed calculated size {:?} {:?}", entity, calculated_size);
         flex_surface.upsert_leaf(entity, &style, *calculated_size, logical_to_physical_factor);
     }
 
@@ -288,11 +293,13 @@ pub fn flex_node_system(
 
     // update children
     for (entity, children) in children_query.iter() {
+        info!("changed children {:?}: {:?}", entity, children);
         flex_surface.update_children(entity, &children);
     }
 
     // update the window's root nodes if it was resized 
     for event in resized_reader.iter(&resized_events) {
+        info!("resized window");
         flex_surface.update_window(windows.get(event.id).unwrap());
     }