Improve the Pen tool's colinearity and equidistance controls (#2242)

* basic implementation done now refactor

* fixed overlays refactoring need to fix colinear(update it)

* more_refactoring ,only toggle C for grs to be done(if required)

* cleanup

* cleanup

* more formatting checks

* refactoring alt fixed hints fixed

* code-review-changes

* path-tool-tab-fix

* fixed bugs

* some refactor

* fixed ctrl_snap

* added lock-overlays and fixed grs bug

* Code review

---------

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

Author: 0SlowPoke0

editor/src/messages/input_mapper/input_mappings.rs

@@ -212,7 +212,7 @@ pub fn input_mappings() -> Mapping {
 		entry!(KeyDown(Backspace); modifiers=[Accel], action_dispatch=PathToolMessage::DeleteAndBreakPath),
 		entry!(KeyDown(Delete); modifiers=[Shift], action_dispatch=PathToolMessage::BreakPath),
 		entry!(KeyDown(Backspace); modifiers=[Shift], action_dispatch=PathToolMessage::BreakPath),
-		entry!(KeyDown(Tab); action_dispatch=PathToolMessage::SwapSelectedHandles),
+		entry!(KeyDownNoRepeat(Tab); action_dispatch=PathToolMessage::SwapSelectedHandles),
 		entry!(KeyDown(MouseLeft); action_dispatch=PathToolMessage::MouseDown { direct_insert_without_sliding: Control, extend_selection: Shift, lasso_select: Control }),
 		entry!(KeyDown(MouseRight); action_dispatch=PathToolMessage::RightClick),
 		entry!(KeyDown(Escape); action_dispatch=PathToolMessage::Escape),
@@ -254,7 +254,7 @@ pub fn input_mappings() -> Mapping {
 		entry!(KeyDown(KeyJ); modifiers=[Accel], action_dispatch=ToolMessage::Path(PathToolMessage::ClosePath)),
 		//
 		// PenToolMessage
-		entry!(PointerMove; refresh_keys=[Control, Alt, Shift], action_dispatch=PenToolMessage::PointerMove { snap_angle: Shift, break_handle: Alt, lock_angle: Control}),
+		entry!(PointerMove; refresh_keys=[Control, Alt, Shift, KeyC], action_dispatch=PenToolMessage::PointerMove { snap_angle: Shift, break_handle: Alt, lock_angle: Control, colinear: KeyC }),
 		entry!(KeyDown(MouseLeft); action_dispatch=PenToolMessage::DragStart { append_to_selected: Shift }),
 		entry!(KeyUp(MouseLeft); action_dispatch=PenToolMessage::DragStop),
 		entry!(KeyDown(MouseRight); action_dispatch=PenToolMessage::Confirm),

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

@@ -1185,16 +1185,9 @@ impl Fsm for PathToolFsmState {
 					.push(HintGroup(vec![HintInfo::mouse(MouseMotion::Rmb, ""), HintInfo::keys([Key::Escape], "Cancel").prepend_slash()]));
 
 				let drag_anchor = HintInfo::keys([Key::Space], "Drag Anchor");
-				let point_select_state_hint_group = match dragging_state.point_select_state {
-					PointSelectState::HandleNoPair => {
-						let mut hints = vec![drag_anchor];
-						hints.push(HintInfo::keys([Key::Shift], "Snap 15°"));
-						hints.push(HintInfo::keys([Key::Control], "Lock Angle"));
-						hints
-					}
-					PointSelectState::HandleWithPair => {
-						let mut hints = vec![drag_anchor];
-						hints.push(HintInfo::keys([Key::Tab], "Swap Selected Handles"));
+				let toggle_group = match dragging_state.point_select_state {
+					PointSelectState::HandleNoPair | PointSelectState::HandleWithPair => {
+						let mut hints = vec![HintInfo::keys([Key::Tab], "Swap Selected Handles")];
 						hints.push(HintInfo::keys(
 							[Key::KeyC],
 							if colinear == ManipulatorAngle::Colinear {
@@ -1203,18 +1196,40 @@ impl Fsm for PathToolFsmState {
 								"Make Handles Colinear"
 							},
 						));
+						hints
+					}
+					PointSelectState::Anchor => Vec::new(),
+				};
+				let hold_group = match dragging_state.point_select_state {
+					PointSelectState::HandleNoPair => {
+						let mut hints = vec![];
 						if colinear != ManipulatorAngle::Free {
 							hints.push(HintInfo::keys([Key::Alt], "Equidistant Handles"));
 						}
 						hints.push(HintInfo::keys([Key::Shift], "Snap 15°"));
 						hints.push(HintInfo::keys([Key::Control], "Lock Angle"));
+						hints.push(drag_anchor);
+						hints
+					}
+					PointSelectState::HandleWithPair => {
+						let mut hints = vec![];
+						if colinear != ManipulatorAngle::Free {
+							hints.push(HintInfo::keys([Key::Alt], "Equidistant Handles"));
+						}
+						hints.push(HintInfo::keys([Key::Shift], "Snap 15°"));
+						hints.push(HintInfo::keys([Key::Control], "Lock Angle"));
+						hints.push(drag_anchor);
 						hints
 					}
 					PointSelectState::Anchor => Vec::new(),
 				};
 
-				if !point_select_state_hint_group.is_empty() {
-					dragging_hint_data.0.push(HintGroup(point_select_state_hint_group));
+				if !toggle_group.is_empty() {
+					dragging_hint_data.0.push(HintGroup(toggle_group));
+				}
+
+				if !hold_group.is_empty() {
+					dragging_hint_data.0.push(HintGroup(hold_group));
 				}
 
 				dragging_hint_data