Add overlays for free-floating anchors on hovered/selected vector layers (GraphiteEditor#2630)

* Add selection overlay for free-floating anchors

* Add hover overlay for free-floating anchors

* Refactor outline_free_floating anchor

* Add single-anchor click targets on VectorData

* Modify ClickTarget to adapt for Subpath and PointGroup

* Fix Rust formatting

* Remove debug statements

* Add point groups support in VectorDataTable::add_upstream_click_targets

* Improve overlay for free floating anchors

* Remove datatype for nodes_to_shift

* Fix formatting in select_tool.rs

* Lints

* Code review

* Remove references to point_group

* Refactor ManipulatorGroup for FreePoint in ClickTargetGroup

* Rename ClickTargetGroup to ClickTargetType

* Refactor outline_free_floating_anchors into outline

* Adapt TransformCage to disable dragging and rotating on a single anchor layer

* Fix hover on single points

* Fix comments

* Lints

* Code review pass

---------

Co-authored-by: Keavon Chambers <[email protected]>

Author: 2 people

editor/src/messages/tool/common_functionality/shape_editor.rs

@@ -107,7 +107,11 @@ impl SelectedLayerState {
 	}
 
 	pub fn selected_points_count(&self) -> usize {
-		self.selected_points.len()
+		let count = self.selected_points.iter().fold(0, |acc, point| {
+			let is_ignored = (point.as_handle().is_some() && self.ignore_handles) || (point.as_anchor().is_some() && self.ignore_anchors);
+			acc + if is_ignored { 0 } else { 1 }
+		});
+		count
 	}
 }