Prune commentary and stale Rust port notes

core/src/ui/active.rs

@@ -2,7 +2,6 @@ use crate::{
     LayerId, MaskIdx, MoveIdx, PrimitiveHandle, Size, TextureHandle, UiRegion, WidgetId, util::Vec2,
 };
 
-/// important non rendering data for retained drawing
 #[derive(Debug)]
 pub struct ActiveData {
     pub id: WidgetId,
@@ -11,23 +10,13 @@ pub struct ActiveData {
     pub textures: Vec<TextureHandle>,
     pub primitives: Vec<PrimitiveHandle>,
     pub children: Vec<WidgetId>,
-    /// Direct children whose reported size this widget used during its
-    /// latest draw. Dirtiness propagates across these edges before layout
-    /// starts, so the resulting draw still travels only parent to child.
     pub size_dependencies: Vec<WidgetId>,
-    /// The inherited mask, not `own_mask`.
     pub mask: MaskIdx,
     /// The widget's retained mask slot, or `MaskIdx::NONE`.
     pub own_mask: MaskIdx,
     pub layer: LayerId,
-    /// The size recorded by the last `Widget::draw` through its painter.
     pub size: Size,
-    /// Retained so descendants' parent links stay valid across redraws.
     pub move_slot: MoveIdx,
-    /// The optional coordinate boundary between this widget and its direct
-    /// children. Descendants retain links to it across redraws, just as they
-    /// do to `move_slot`.
     pub child_move_slot: Option<MoveIdx>,
-    /// The part of this widget's move delta already folded into `region`.
     pub move_applied: Vec2,
 }