Revert #1587 and #1597 so the Pen tool no longer handles per-segment history

editor/src/messages/portfolio/document/document_message_handler.rs

@@ -917,7 +917,6 @@ impl MessageHandler<DocumentMessage, DocumentMessageContext<'_>> for DocumentMes
 				}
 				responses.add(SelectToolMessage::Abort);
 				responses.add(DocumentMessage::DocumentHistoryForward);
-				responses.add(ToolMessage::Redo);
 				responses.add(OverlaysMessage::Draw);
 				responses.add(EventMessage::SelectionChanged);
 			}
@@ -1529,10 +1528,9 @@ impl MessageHandler<DocumentMessage, DocumentMessageContext<'_>> for DocumentMes
 				if self.network_interface.transaction_status() != TransactionStatus::Finished {
 					return;
 				}
-				responses.add(ToolMessage::PreUndo);
+				responses.add(EventMessage::ToolAbort);
 				responses.add(DocumentMessage::DocumentHistoryBackward);
 				responses.add(OverlaysMessage::Draw);
-				responses.add(ToolMessage::Undo);
 				responses.add(EventMessage::SelectionChanged);
 			}
 			DocumentMessage::UngroupSelectedLayers => {

editor/src/messages/tool/tool_message.rs

@@ -76,8 +76,6 @@ pub enum ToolMessage {
 	},
 	DeactivateTools,
 	InitTools,
-	PreUndo,
-	Redo,
 	RefreshToolOptions,
 	RefreshToolShelf,
 	ResetColors,
@@ -90,7 +88,6 @@ pub enum ToolMessage {
 	},
 	ToggleSelectVsPath,
 	SwapColors,
-	Undo,
 	UpdateCursor,
 	UpdateHints,
 	UpdateSelectionMode {

editor/src/messages/tool/tool_message_handler.rs

@@ -243,18 +243,6 @@ impl MessageHandler<ToolMessage, ToolMessageContext<'_>> for ToolMessageHandler
 
 				responses.add(OverlaysMessage::AddProvider { provider: ARTBOARD_OVERLAY_PROVIDER });
 			}
-			ToolMessage::PreUndo => {
-				let tool_data = &mut self.tool_state.tool_data;
-				if tool_data.active_tool_type != ToolType::Pen {
-					responses.add(EventMessage::ToolAbort);
-				}
-			}
-			ToolMessage::Redo => {
-				let tool_data = &mut self.tool_state.tool_data;
-				if tool_data.active_tool_type == ToolType::Pen {
-					responses.add(PenToolMessage::Redo);
-				}
-			}
 			ToolMessage::RefreshToolOptions => {
 				let tool_data = &mut self.tool_state.tool_data;
 
@@ -318,12 +306,6 @@ impl MessageHandler<ToolMessage, ToolMessageContext<'_>> for ToolMessageHandler
 
 				document_data.update_working_colors(responses); // TODO: Make this an event
 			}
-			ToolMessage::Undo => {
-				let tool_data = &mut self.tool_state.tool_data;
-				if tool_data.active_tool_type == ToolType::Pen {
-					responses.add(PenToolMessage::Undo);
-				}
-			}
 
 			// Sub-messages
 			tool_message => {
@@ -390,8 +372,6 @@ impl MessageHandler<ToolMessage, ToolMessageContext<'_>> for ToolMessageHandler
 			SelectRandomWorkingColor,
 			ResetColors,
 			SwapColors,
-
-			Undo,
 		);
 		list.extend(self.tool_state.tool_data.active_tool().actions());
 		list.extend(self.transform_layer_handler.actions());

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

@@ -83,7 +83,6 @@ pub enum PenToolMessage {
 		colinear: Key,
 		move_anchor_with_handles: Key,
 	},
-	Redo,
 	Undo,
 	UpdateOptions {
 		options: PenOptionsUpdate,
@@ -485,30 +484,6 @@ impl PenToolData {
 		}
 	}
 
-	/// Re-renders the preview after an undo/redo once the graph has re-evaluated, since the layer transform is
-	/// briefly stale until then and would place the preview off in the wrong space. Also suppresses the angle
-	/// modifiers (Ctrl, Shift) still held from the shortcut until each is released and pressed again.
-	fn refresh_preview_after_history(&mut self, responses: &mut VecDeque<Message>) {
-		self.suppress_lock_angle = true;
-		self.suppress_snap_angle = true;
-		self.modifiers.lock_angle = false;
-		self.modifiers.snap_angle = false;
-		self.angle_locked = false;
-
-		responses.add(DeferMessage::AfterGraphRun {
-			messages: vec![
-				PenToolMessage::PointerMove {
-					snap_angle: Key::Shift,
-					break_handle: Key::Alt,
-					lock_angle: Key::Control,
-					colinear: Key::KeyC,
-					move_anchor_with_handles: Key::Space,
-				}
-				.into(),
-			],
-		});
-	}
-
 	/// Check whether target handle is primary, end, or `self.handle_end`
 	fn check_end_handle_type(&self, vector: &Vector) -> TargetHandle {
 		match (self.handle_end, self.prior_segment_endpoint, self.prior_segment, self.path_closed) {
@@ -1926,9 +1901,6 @@ impl Fsm for PenToolFsmState {
 					tool_data.buffering_merged_vector = false;
 					PenToolFsmState::DraggingHandle(tool_data.handle_mode)
 				} else {
-					if tool_data.handle_end.is_some() {
-						responses.add(DocumentMessage::StartTransaction);
-					}
 					// Merge two layers if the point is connected to the end point of another path
 
 					// This might not be the correct solution to artboards being included as the other layer,
@@ -2248,24 +2220,6 @@ impl Fsm for PenToolFsmState {
 				PenToolFsmState::Ready
 			}
 			(_, PenToolMessage::Abort) => PenToolFsmState::Ready,
-			(PenToolFsmState::DraggingHandle(..) | PenToolFsmState::PlacingAnchor, PenToolMessage::Undo) => {
-				if tool_data.point_index > 0 {
-					tool_data.point_index -= 1;
-					tool_data.refresh_preview_after_history(responses);
-					PenToolFsmState::PlacingAnchor
-				} else {
-					responses.add(PenToolMessage::Abort);
-					self
-				}
-			}
-			(_, PenToolMessage::Redo) => {
-				tool_data.point_index = (tool_data.point_index + 1).min(tool_data.latest_points.len().saturating_sub(1));
-				tool_data.refresh_preview_after_history(responses);
-				match tool_data.point_index {
-					0 => PenToolFsmState::Ready,
-					_ => PenToolFsmState::PlacingAnchor,
-				}
-			}
 			_ => self,
 		}
 	}