Remap Path tool point sliding to G G (#2913)

* Feat: Point sliding on G G

* Code cleanup

* Fix gg sliding behaviour

* Fix build after merge conflict resolution

* Fix slide point and add hints

* Fix history in segment insertion

* Code review

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

Author: 4adex

editor/src/messages/tool/tool_messages/path_tool.rs

@@ -127,6 +127,7 @@ pub enum PathToolMessage {
 	UpdateSelectedPointsStatus {
 		overlay_context: OverlayContext,
 	},
+	StartSlidingPoint,
 	Copy {
 		clipboard: Clipboard,
 	},
@@ -420,6 +421,7 @@ impl<'a> MessageHandler<ToolMessage, &mut ToolActionMessageContext<'a>> for Path
 				DeleteAndBreakPath,
 				ClosePath,
 				PointerMove,
+				StartSlidingPoint,
 				Copy,
 				Cut,
 				DeleteSelected,
@@ -438,6 +440,7 @@ impl<'a> MessageHandler<ToolMessage, &mut ToolActionMessageContext<'a>> for Path
 				BreakPath,
 				DeleteAndBreakPath,
 				SwapSelectedHandles,
+				StartSlidingPoint,
 				Copy,
 				Cut,
 				DeleteSelected,
@@ -456,6 +459,7 @@ impl<'a> MessageHandler<ToolMessage, &mut ToolActionMessageContext<'a>> for Path
 				DeleteAndBreakPath,
 				Escape,
 				RightClick,
+				StartSlidingPoint,
 				TogglePointEditing,
 				ToggleSegmentEditing
 			),
@@ -1208,11 +1212,6 @@ impl PathToolData {
 			};
 			let Some(vector) = document.network_interface.compute_modified_vector(layer) else { return false };
 
-			// Check that the handles of anchor point are also colinear
-			if !vector.colinear(*anchor) {
-				return false;
-			};
-
 			let Some(point_id) = anchor.as_anchor() else { return false };
 
 			let mut connected_segments = [None, None];
@@ -2083,10 +2082,6 @@ impl Fsm for PathToolFsmState {
 				}
 
 				if !tool_data.update_colinear(equidistant_state, toggle_colinear_state, tool_action_data.shape_editor, tool_action_data.document, responses) {
-					if snap_angle_state && lock_angle_state && tool_data.start_sliding_point(tool_action_data.shape_editor, tool_action_data.document) {
-						return PathToolFsmState::SlidingPoint;
-					}
-
 					tool_data.drag(
 						equidistant_state,
 						lock_angle_state,
@@ -2382,6 +2377,8 @@ impl Fsm for PathToolFsmState {
 				tool_data.ghost_outline.clear();
 				let extend_selection = input.keyboard.get(extend_selection as usize);
 				let drag_occurred = tool_data.drag_start_pos.distance(input.mouse.position) > DRAG_THRESHOLD;
+				let mut segment_dissolved = false;
+				let mut point_inserted = false;
 
 				let nearest_point = shape_editor.find_nearest_visible_point_indices(
 					&document.network_interface,
@@ -2402,6 +2399,7 @@ impl Fsm for PathToolFsmState {
 						if tool_data.delete_segment_pressed {
 							if let Some(vector) = document.network_interface.compute_modified_vector(segment.layer()) {
 								shape_editor.dissolve_segment(responses, segment.layer(), &vector, segment.segment(), segment.points());
+								segment_dissolved = true;
 							}
 						} else {
 							let is_segment_selected = shape_editor
@@ -2410,18 +2408,19 @@ impl Fsm for PathToolFsmState {
 								.is_some_and(|state| state.is_segment_selected(segment.segment()));
 
 							segment.adjusted_insert_and_select(shape_editor, responses, extend_selection, point_mode, is_segment_selected);
-							tool_data.segment = None;
-							tool_data.molding_info = None;
-							tool_data.molding_segment = false;
-							tool_data.temporary_adjacent_handles_while_molding = None;
-							return PathToolFsmState::Ready;
+							point_inserted = true;
 						}
 					}
 
 					tool_data.segment = None;
 					tool_data.molding_info = None;
 					tool_data.molding_segment = false;
 					tool_data.temporary_adjacent_handles_while_molding = None;
+
+					if segment_dissolved || point_inserted {
+						responses.add(DocumentMessage::EndTransaction);
+						return PathToolFsmState::Ready;
+					}
 				}
 
 				let segment_mode = tool_options.path_editing_mode.segment_editing_mode;
@@ -2578,6 +2577,14 @@ impl Fsm for PathToolFsmState {
 				shape_editor.delete_point_and_break_path(document, responses);
 				PathToolFsmState::Ready
 			}
+			(_, PathToolMessage::StartSlidingPoint) => {
+				responses.add(DocumentMessage::StartTransaction);
+				if tool_data.start_sliding_point(shape_editor, document) {
+					PathToolFsmState::SlidingPoint
+				} else {
+					PathToolFsmState::Ready
+				}
+			}
 			(_, PathToolMessage::Copy { clipboard }) => {
 				// TODO: Add support for selected segments
 
@@ -3297,18 +3304,14 @@ fn update_dynamic_hints(
 				}
 			}
 
-			let mut drag_selected_hints = vec![HintInfo::mouse(MouseMotion::LmbDrag, "Drag Selected")];
+			let drag_selected_hints = vec![HintInfo::mouse(MouseMotion::LmbDrag, "Drag Selected")];
 			let mut delete_selected_hints = vec![HintInfo::keys([Key::Delete], "Delete Selected")];
 
 			if at_least_one_anchor_selected {
 				delete_selected_hints.push(HintInfo::keys([Key::Accel], "No Dissolve").prepend_plus());
 				delete_selected_hints.push(HintInfo::keys([Key::Shift], "Cut Anchor").prepend_plus());
 			}
 
-			if single_colinear_anchor_selected {
-				drag_selected_hints.push(HintInfo::multi_keys([[Key::Control], [Key::Shift]], "Slide").prepend_plus());
-			}
-
 			let segment_edit = tool_options.path_editing_mode.segment_editing_mode;
 			let point_edit = tool_options.path_editing_mode.point_editing_mode;
 
@@ -3373,9 +3376,15 @@ fn update_dynamic_hints(
 				let mut groups = vec![
 					HintGroup(drag_selected_hints),
 					HintGroup(vec![HintInfo::multi_keys([[Key::KeyG], [Key::KeyR], [Key::KeyS]], "Grab/Rotate/Scale Selected")]),
-					HintGroup(vec![HintInfo::arrow_keys("Nudge Selected"), HintInfo::keys([Key::Shift], "10x").prepend_plus()]),
-					HintGroup(delete_selected_hints),
 				];
+
+				if single_colinear_anchor_selected {
+					groups.push(HintGroup(vec![HintInfo::multi_keys([[Key::KeyG], [Key::KeyG]], "Slide")]));
+				}
+
+				groups.push(HintGroup(vec![HintInfo::arrow_keys("Nudge Selected"), HintInfo::keys([Key::Shift], "10x").prepend_plus()]));
+				groups.push(HintGroup(delete_selected_hints));
+
 				hint_data.append(&mut groups);
 			}
 

editor/src/messages/tool/transform_layer/transform_layer_message_handler.rs

@@ -65,6 +65,8 @@ pub struct TransformLayerMessageHandler {
 
 	// Ghost outlines for Path Tool
 	ghost_outline: Vec<(Vec<ClickTargetType>, DAffine2)>,
+
+	was_grabbing: bool,
 }
 
 impl MessageHandler<TransformLayerMessage, TransformLayerMessageContext<'_>> for TransformLayerMessageHandler {
@@ -122,7 +124,7 @@ impl MessageHandler<TransformLayerMessage, TransformLayerMessageContext<'_>> for
 				self.local_pivot = document.metadata().document_to_viewport.inverse().transform_point2(*selected.pivot);
 				self.grab_target = self.local_pivot;
 			}
-			// Here vector data from all layers is not considered which can be a problem in pivot calculation
+			// TODO: Here vector data from all layers is not considered which can be a problem in pivot calculation
 			else if let Some(vector) = selected_layers.first().and_then(|&layer| document.network_interface.compute_modified_vector(layer)) {
 				*selected.original_transforms = OriginalTransforms::default();
 
@@ -301,6 +303,7 @@ impl MessageHandler<TransformLayerMessage, TransformLayerMessageContext<'_>> for
 				responses.add(SelectToolMessage::PivotShift { offset: None, flush: true });
 
 				if final_transform {
+					self.was_grabbing = false;
 					responses.add(OverlaysMessage::RemoveProvider(TRANSFORM_GRS_OVERLAY_PROVIDER));
 				}
 			}
@@ -356,34 +359,64 @@ impl MessageHandler<TransformLayerMessage, TransformLayerMessageContext<'_>> for
 					if (selected_points.is_empty() && selected_segments.is_empty())
 						|| (!using_path_tool && !using_select_tool && !using_pen_tool && !using_shape_tool)
 						|| selected_layers.is_empty()
-						|| transform_type.equivalent_to(self.transform_operation)
+						|| (transform_type.equivalent_to(self.transform_operation) && !self.was_grabbing)
 					{
 						return;
 					}
+
+					if using_path_tool && transform_type == TransformType::Grab {
+						// Check if a single point is selected and it's a colinear point
+						let single_anchor_selected = shape_editor.selected_points().count() == 1 && shape_editor.selected_points().any(|point| point.as_anchor().is_some());
+
+						if single_anchor_selected && transform_type.equivalent_to(self.transform_operation) && self.was_grabbing {
+							let selected_nodes = &document.network_interface.selected_nodes();
+
+							let Some(layer) = selected_nodes.selected_layers(document.metadata()).next() else { return };
+							let Some(vector_data) = document.network_interface.compute_modified_vector(layer) else { return };
+							let Some(anchor) = shape_editor.selected_points().next() else { return };
+
+							if vector_data.colinear(*anchor) {
+								responses.add(TransformLayerMessage::CancelTransformOperation);
+
+								// Start sliding point
+								responses.add(DeferMessage::AfterGraphRun {
+									messages: vec![PathToolMessage::StartSlidingPoint.into()],
+								});
+							}
+
+							return;
+						}
+
+						if transform_type.equivalent_to(self.transform_operation) {
+							return;
+						}
+
+						self.was_grabbing = true;
+					}
 				}
 
-				if let Some(vector) = selected_layers.first().and_then(|&layer| document.network_interface.compute_modified_vector(layer)) {
-					if let [point] = selected_points.as_slice() {
-						if matches!(point, ManipulatorPointId::Anchor(_)) {
-							if let Some([handle1, handle2]) = point.get_handle_pair(&vector) {
-								let handle1_length = handle1.length(&vector);
-								let handle2_length = handle2.length(&vector);
-
-								if (handle1_length == 0. && handle2_length == 0. && !using_select_tool) || (handle1_length == f64::MAX && handle2_length == f64::MAX && !using_select_tool) {
-									// G should work for this point but not R and S
-									if matches!(transform_type, TransformType::Rotate | TransformType::Scale) {
-										selected.original_transforms.clear();
-										return;
-									}
+				if let Some(vector) = selected_layers.first().and_then(|&layer| document.network_interface.compute_modified_vector(layer))
+					&& let [point] = selected_points.as_slice()
+				{
+					if matches!(point, ManipulatorPointId::Anchor(_)) {
+						if let Some([handle1, handle2]) = point.get_handle_pair(&vector) {
+							let handle1_length = handle1.length(&vector);
+							let handle2_length = handle2.length(&vector);
+
+							if (handle1_length == 0. && handle2_length == 0. && !using_select_tool) || (handle1_length == f64::MAX && handle2_length == f64::MAX && !using_select_tool) {
+								// G should work for this point but not R and S
+								if matches!(transform_type, TransformType::Rotate | TransformType::Scale) {
+									selected.original_transforms.clear();
+									return;
 								}
 							}
-						} else {
-							let handle_length = point.as_handle().map(|handle| handle.length(&vector));
+						}
+					} else {
+						let handle_length = point.as_handle().map(|handle| handle.length(&vector));
 
-							if handle_length == Some(0.) {
-								selected.original_transforms.clear();
-								return;
-							}
+						if handle_length == Some(0.) {
+							selected.original_transforms.clear();
+							return;
 						}
 					}
 				}
@@ -409,6 +442,7 @@ impl MessageHandler<TransformLayerMessage, TransformLayerMessageContext<'_>> for
 			TransformLayerMessage::CancelTransformOperation => {
 				if using_path_tool {
 					self.ghost_outline.clear();
+					self.was_grabbing = false;
 				}
 
 				if using_pen_tool {
@@ -499,7 +533,7 @@ impl MessageHandler<TransformLayerMessage, TransformLayerMessageContext<'_>> for
 
 				if self.typing.digits.is_empty() || !self.transform_operation.can_begin_typing() {
 					match self.transform_operation {
-						TransformOperation::None => unreachable!(),
+						TransformOperation::None => {}
 						TransformOperation::Grabbing(translation) => {
 							let delta_pos = input.mouse.position - self.mouse_position;
 							let delta_pos = (self.initial_transform * document_to_viewport.inverse()).transform_vector2(delta_pos);

node-graph/gcore/src/vector/misc.rs

@@ -182,10 +182,10 @@ pub fn bezpath_to_manipulator_groups(bezpath: &BezPath) -> (Vec<ManipulatorGroup
 				ManipulatorGroup::new(point_to_dvec2(point2), Some(point_to_dvec2(point1)), None)
 			}
 			kurbo::PathEl::ClosePath => {
-				if let Some(last_manipulators) = manipulator_groups.pop() {
-					if let Some(first_manipulators) = manipulator_groups.first_mut() {
-						first_manipulators.out_handle = last_manipulators.in_handle;
-					}
+				if let Some(last_manipulators) = manipulator_groups.pop()
+					&& let Some(first_manipulators) = manipulator_groups.first_mut()
+				{
+					first_manipulators.out_handle = last_manipulators.in_handle;
 				}
 				is_closed = true;
 				break;