Add Path node differential edit summary widget, and store imported SVG content in that VectorModification struct (#4036)

* Make paste/import SVG store as the Path node's VectorModification not Table<Vector>

* Add a migration from Table<Vector> to VectorModification for existing documents

* Add a VectorModification widget to visualize change counts

* Refactor VectorModification to compute per-category counts for additions, removals, and modifications

editor/src/messages/portfolio/document/graph_operation/utility_types.rs

@@ -15,7 +15,7 @@ use graphene_std::table::Table;
 use graphene_std::text::{Font, TypesettingConfig};
 use graphene_std::vector::Vector;
 use graphene_std::vector::style::{Fill, Stroke};
-use graphene_std::vector::{PointId, VectorModificationType};
+use graphene_std::vector::{PointId, VectorModification, VectorModificationType};
 use graphene_std::{Artboard, Color, Graphic, NodeInputDecleration};
 
 #[derive(PartialEq, Clone, Copy, Debug, serde::Serialize, serde::Deserialize)]
@@ -211,11 +211,13 @@ impl<'a> ModifyInputsContext<'a> {
 	}
 
 	pub fn insert_vector(&mut self, subpaths: Vec<Subpath<PointId>>, layer: LayerNodeIdentifier, include_transform: bool, include_fill: bool, include_stroke: bool) {
-		let vector = Table::new_from_element(Vector::from_subpaths(subpaths, true));
+		// Build a VectorModification that reproduces the geometry (same format the Pen tool uses)
+		let vector = Vector::from_subpaths(subpaths, true);
+		let modification = Box::new(VectorModification::create_from_vector(&vector));
 
 		let shape = resolve_network_node_type("Path")
 			.expect("Path node does not exist")
-			.node_template_input_override([Some(NodeInput::value(TaggedValue::Vector(vector), false))]);
+			.node_template_input_override([None, Some(NodeInput::value(TaggedValue::VectorModification(modification), false))]);
 		let shape_id = NodeId::new();
 		self.network_interface.insert_node(shape_id, shape, &[]);
 		self.network_interface.move_node_to_chain_start(&shape_id, layer, &[], self.import);

editor/src/messages/portfolio/document/node_graph/node_properties.rs

@@ -24,10 +24,10 @@ use graphene_std::raster::{
 use graphene_std::table::{Table, TableRow};
 use graphene_std::text::{Font, TextAlign};
 use graphene_std::transform::{Footprint, ReferencePoint, ScaleType, Transform};
-use graphene_std::vector::QRCodeErrorCorrectionLevel;
 use graphene_std::vector::misc::BooleanOperation;
 use graphene_std::vector::misc::{ArcType, CentroidType, ExtrudeJoiningAlgorithm, GridType, InterpolationDistribution, MergeByDistanceAlgorithm, PointSpacingType, RowsOrColumns, SpiralType};
 use graphene_std::vector::style::{Fill, FillChoice, FillType, GradientSpreadMethod, GradientStops, GradientType, PaintOrder, StrokeAlign, StrokeCap, StrokeJoin};
+use graphene_std::vector::{QRCodeErrorCorrectionLevel, VectorModification};
 
 pub(crate) fn string_properties(text: &str) -> Vec<LayoutGroup> {
 	let widget = TextLabel::new(text).widget_instance();
@@ -230,6 +230,7 @@ pub(crate) fn property_from_type(
 						Some(x) if x == TypeId::of::<Font>() => font_widget(default_info),
 						Some(x) if x == TypeId::of::<Curve>() => curve_widget(default_info),
 						Some(x) if x == TypeId::of::<Footprint>() => footprint_widget(default_info, &mut extra_widgets),
+						Some(x) if x == TypeId::of::<Box<VectorModification>>() => vector_modification_widget(default_info).into(),
 						// ===============================
 						// MANUALLY IMPLEMENTED ENUM TYPES
 						// ===============================
@@ -398,6 +399,27 @@ pub fn reference_point_widget(parameter_widgets_info: ParameterWidgetsInfo, disa
 	widgets
 }
 
+pub fn vector_modification_widget(parameter_widgets_info: ParameterWidgetsInfo) -> Vec<WidgetInstance> {
+	let ParameterWidgetsInfo { document_node, node_id: _, index, .. } = parameter_widgets_info;
+
+	let mut widgets = start_widgets(parameter_widgets_info);
+
+	let Some(document_node) = document_node else { return widgets };
+	let Some(input) = document_node.inputs.get(index) else { return widgets };
+
+	if let Some(TaggedValue::VectorModification(modification)) = input.as_non_exposed_value() {
+		let label = modification.summary_label();
+		let tooltip = modification.summary_tooltip();
+
+		widgets.extend_from_slice(&[
+			Separator::new(SeparatorStyle::Unrelated).widget_instance(),
+			TextLabel::new(label).tooltip_label("Summary of Differential Edits").tooltip_description(tooltip).widget_instance(),
+		]);
+	}
+
+	widgets
+}
+
 pub fn footprint_widget(parameter_widgets_info: ParameterWidgetsInfo, extra_widgets: &mut Vec<LayoutGroup>) -> LayoutGroup {
 	let ParameterWidgetsInfo { document_node, node_id, index, .. } = parameter_widgets_info;
 

editor/src/messages/portfolio/document_migration.rs

@@ -10,7 +10,6 @@ use graph_craft::document::DocumentNode;
 use graph_craft::document::{DocumentNodeImplementation, NodeInput, value::TaggedValue};
 use graphene_std::ProtoNodeIdentifier;
 use graphene_std::subpath::Subpath;
-use graphene_std::table::Table;
 use graphene_std::text::{TextAlign, TypesettingConfig};
 use graphene_std::transform::ScaleType;
 use graphene_std::uuid::NodeId;
@@ -1140,10 +1139,8 @@ fn migrate_node(node_id: &NodeId, node: &DocumentNode, network_path: &[NodeId],
 			log::error!("Path node does not exist.");
 			return None;
 		};
-		let path_node = path_node_type.node_template_input_override([
-			Some(NodeInput::value(TaggedValue::Vector(Table::new_from_element(vector)), true)),
-			Some(NodeInput::value(TaggedValue::VectorModification(Default::default()), false)),
-		]);
+		let modification = Box::new(graphene_std::vector::VectorModification::create_from_vector(&vector));
+		let path_node = path_node_type.node_template_input_override([None, Some(NodeInput::value(TaggedValue::VectorModification(modification), false))]);
 
 		// Get the "Spline" node definition and wire it up with the "Path" node as input
 		let Some(spline_node_type) = resolve_proto_node_type(graphene_std::vector::spline::IDENTIFIER) else {
@@ -1952,6 +1949,29 @@ fn migrate_node(node_id: &NodeId, node: &DocumentNode, network_path: &[NodeId],
 			.set_input(&InputConnector::node(*node_id, 3), NodeInput::value(TaggedValue::Bool(false), false), network_path);
 	}
 
+	// Migrate Path nodes that stored geometry directly in input 0 (as a Table<Vector>) to instead use a VectorModification in input 1
+	if reference == DefinitionIdentifier::Network("Path".into()) {
+		let input_0 = node.inputs.first()?;
+		if let NodeInput::Value { tagged_value, exposed } = input_0
+			&& !exposed
+			&& let TaggedValue::Vector(vector_table) = &**tagged_value
+			&& !vector_table.is_empty()
+		{
+			let vector = vector_table.iter().next()?.element;
+			let modification = Box::new(graphene_std::vector::VectorModification::create_from_vector(vector));
+
+			// Reset input 0 to the default exposed state
+			document
+				.network_interface
+				.set_input(&InputConnector::node(*node_id, 0), NodeInput::value(TaggedValue::Vector(Default::default()), true), network_path);
+
+			// Store the converted VectorModification in input 1
+			document
+				.network_interface
+				.set_input(&InputConnector::node(*node_id, 1), NodeInput::value(TaggedValue::VectorModification(modification), false), network_path);
+		}
+	}
+
 	// ==================================
 	// PUT ALL MIGRATIONS ABOVE THIS LINE
 	// ==================================

node-graph/libraries/vector-types/src/vector/vector_modification.rs

@@ -324,7 +324,108 @@ pub enum VectorModificationType {
 	ApplyEndDelta { segment: SegmentId, delta: DVec2 },
 }
 
+/// Per-category `[added, removed, modified]` counts for a [`VectorModification`].
+struct ModificationCategoryCounts {
+	points: [usize; 3],
+	segments: [usize; 3],
+	regions: [usize; 3],
+	smooth_handles: [usize; 3],
+}
+
+impl ModificationCategoryCounts {
+	/// Returns the `[added, removed, modified]` totals across all categories.
+	fn totals(&self) -> [usize; 3] {
+		let mut totals = [0; 3];
+		for [a, r, m] in [self.points, self.segments, self.regions, self.smooth_handles] {
+			totals[0] += a;
+			totals[1] += r;
+			totals[2] += m;
+		}
+		totals
+	}
+
+	/// Iterates over each named category and its `[added, removed, modified]` counts.
+	fn iter_categories(&self) -> impl Iterator<Item = (&str, [usize; 3])> {
+		[("Points", self.points), ("Segments", self.segments), ("Regions", self.regions), ("Smooth Handles", self.smooth_handles)].into_iter()
+	}
+}
+
 impl VectorModification {
+	/// Computes per-category counts of additions, removals, and modifications.
+	fn category_counts(&self) -> ModificationCategoryCounts {
+		// Build sets of added IDs so we can distinguish true modifications from initial values stored for newly added items
+		let add_points: HashSet<_> = self.points.add.iter().copied().collect();
+		let add_segments: HashSet<_> = self.segments.add.iter().copied().collect();
+		let add_regions: HashSet<_> = self.regions.add.iter().copied().collect();
+
+		let point_modifications = self.points.delta.keys().filter(|id| !add_points.contains(id)).count();
+
+		// Count unique modified segment IDs across all field maps
+		let mut modified_segments: HashSet<&SegmentId> = HashSet::with_capacity(self.segments.start_point.len());
+		let not_added_segment = |id: &&SegmentId| !add_segments.contains(id);
+		modified_segments.extend(self.segments.start_point.keys().filter(not_added_segment));
+		modified_segments.extend(self.segments.end_point.keys().filter(not_added_segment));
+		modified_segments.extend(self.segments.handle_primary.keys().filter(not_added_segment));
+		modified_segments.extend(self.segments.handle_end.keys().filter(not_added_segment));
+		modified_segments.extend(self.segments.stroke.keys().filter(not_added_segment));
+
+		// Count unique modified region IDs across all field maps
+		let mut modified_regions: HashSet<&RegionId> = HashSet::with_capacity(self.regions.segment_range.len());
+		let not_added_region = |id: &&RegionId| !add_regions.contains(id);
+		modified_regions.extend(self.regions.segment_range.keys().filter(not_added_region));
+		modified_regions.extend(self.regions.fill.keys().filter(not_added_region));
+
+		ModificationCategoryCounts {
+			points: [self.points.add.len(), self.points.remove.len(), point_modifications],
+			segments: [self.segments.add.len(), self.segments.remove.len(), modified_segments.len()],
+			regions: [self.regions.add.len(), self.regions.remove.len(), modified_regions.len()],
+			smooth_handles: [self.add_g1_continuous.len(), self.remove_g1_continuous.len(), 0],
+		}
+	}
+
+	/// Returns a short human-readable summary string like "+6 / −1 / Δ1".
+	pub fn summary_label(&self) -> String {
+		let counts = self.category_counts();
+		let [additions, removals, modifications] = counts.totals();
+
+		let mut parts = Vec::new();
+		if additions > 0 {
+			parts.push(format!("+{additions}"));
+		}
+		if removals > 0 {
+			parts.push(format!("\u{2212}{removals}"));
+		}
+		if modifications > 0 {
+			parts.push(format!("\u{0394}{modifications}"));
+		}
+		if parts.is_empty() { "No Differential Edits".to_string() } else { parts.join(" / ") }
+	}
+
+	/// Returns a detailed multi-line tooltip describing all the changes.
+	pub fn summary_tooltip(&self) -> String {
+		let counts = self.category_counts();
+
+		let mut lines = Vec::new();
+
+		for (name, [added, removed, modified]) in counts.iter_categories() {
+			let mut parts = Vec::new();
+			if added > 0 {
+				parts.push(format!("+{added}"));
+			}
+			if removed > 0 {
+				parts.push(format!("\u{2212}{removed}"));
+			}
+			if modified > 0 {
+				parts.push(format!("\u{0394}{modified}"));
+			}
+			if !parts.is_empty() {
+				lines.push(format!("{name}: {}", parts.join(" / ")));
+			}
+		}
+
+		if lines.is_empty() { "None".to_string() } else { lines.join("\n") }
+	}
+
 	/// Apply this modification to the specified [`Vector`].
 	pub fn apply<Upstream>(&self, vector: &mut Vector<Upstream>) {
 		self.points.apply(&mut vector.point_domain, &mut vector.segment_domain);