Merge pull request #28509 from bdach/slider-anchor-type-switching

Add ability to cycle slider control point types via keyboard

osu.Game.Rulesets.Osu.Tests/Editor/TestScenePathControlPointVisualiser.cs

@@ -15,6 +15,7 @@ using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Visual;
 using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests.Editor
 {
@@ -177,6 +178,79 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
                 addAssertPointPositionChanged(points, i);
         }
 
+        [Test]
+        public void TestChangingControlPointTypeViaTab()
+        {
+            createVisualiser(true);
+
+            addControlPointStep(new Vector2(200), PathType.LINEAR);
+            addControlPointStep(new Vector2(300));
+            addControlPointStep(new Vector2(500, 300));
+            addControlPointStep(new Vector2(700, 200));
+            addControlPointStep(new Vector2(500, 100));
+
+            AddStep("select first control point", () => visualiser.Pieces[0].IsSelected.Value = true);
+            AddStep("press tab", () => InputManager.Key(Key.Tab));
+            assertControlPointPathType(0, PathType.BEZIER);
+
+            AddStep("press shift-tab", () =>
+            {
+                InputManager.PressKey(Key.LShift);
+                InputManager.Key(Key.Tab);
+                InputManager.ReleaseKey(Key.LShift);
+            });
+            assertControlPointPathType(0, PathType.LINEAR);
+
+            AddStep("press shift-tab", () =>
+            {
+                InputManager.PressKey(Key.LShift);
+                InputManager.Key(Key.Tab);
+                InputManager.ReleaseKey(Key.LShift);
+            });
+            assertControlPointPathType(0, PathType.BSpline(4));
+
+            AddStep("press shift-tab", () =>
+            {
+                InputManager.PressKey(Key.LShift);
+                InputManager.Key(Key.Tab);
+                InputManager.ReleaseKey(Key.LShift);
+            });
+            assertControlPointPathType(0, PathType.PERFECT_CURVE);
+            assertControlPointPathType(2, PathType.BSpline(4));
+
+            AddStep("select third last control point", () =>
+            {
+                visualiser.Pieces[0].IsSelected.Value = false;
+                visualiser.Pieces[2].IsSelected.Value = true;
+            });
+
+            AddStep("press shift-tab", () =>
+            {
+                InputManager.PressKey(Key.LShift);
+                InputManager.Key(Key.Tab);
+                InputManager.ReleaseKey(Key.LShift);
+            });
+            assertControlPointPathType(2, PathType.PERFECT_CURVE);
+
+            AddRepeatStep("press tab", () => InputManager.Key(Key.Tab), 2);
+            assertControlPointPathType(0, PathType.BEZIER);
+            assertControlPointPathType(2, null);
+
+            AddStep("select first and third control points", () =>
+            {
+                visualiser.Pieces[0].IsSelected.Value = true;
+                visualiser.Pieces[2].IsSelected.Value = true;
+            });
+            AddStep("press alt-1", () =>
+            {
+                InputManager.PressKey(Key.AltLeft);
+                InputManager.Key(Key.Number1);
+                InputManager.ReleaseKey(Key.AltLeft);
+            });
+            assertControlPointPathType(0, PathType.LINEAR);
+            assertControlPointPathType(2, PathType.LINEAR);
+        }
+
         private void addAssertPointPositionChanged(Vector2[] points, int index)
         {
             AddAssert($"Point at {points.ElementAt(index)} changed",

osu.Game.Rulesets.Osu.Tests/Editor/TestSceneSliderPlacementBlueprint.cs

@@ -2,13 +2,16 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Linq;
 using NUnit.Framework;
+using osu.Framework.Testing;
 using osu.Framework.Utils;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders;
+using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
@@ -57,7 +60,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertPlaced(true);
             assertLength(200);
             assertControlPointCount(2);
-            assertControlPointType(0, PathType.LINEAR);
+            assertFinalControlPointType(0, PathType.LINEAR);
         }
 
         [Test]
@@ -71,7 +74,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(2);
-            assertControlPointType(0, PathType.LINEAR);
+            assertFinalControlPointType(0, PathType.LINEAR);
         }
 
         [Test]
@@ -89,7 +92,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertPlaced(true);
             assertControlPointCount(3);
             assertControlPointPosition(1, new Vector2(100, 0));
-            assertControlPointType(0, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(0, PathType.PERFECT_CURVE);
         }
 
         [Test]
@@ -111,7 +114,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertControlPointCount(4);
             assertControlPointPosition(1, new Vector2(100, 0));
             assertControlPointPosition(2, new Vector2(100, 100));
-            assertControlPointType(0, PathType.BEZIER);
+            assertFinalControlPointType(0, PathType.BEZIER);
         }
 
         [Test]
@@ -130,8 +133,8 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertPlaced(true);
             assertControlPointCount(3);
             assertControlPointPosition(1, new Vector2(100, 0));
-            assertControlPointType(0, PathType.LINEAR);
+            assertFinalControlPointType(0, PathType.LINEAR);
-            assertControlPointType(1, PathType.LINEAR);
+            assertFinalControlPointType(1, PathType.LINEAR);
         }
 
         [Test]
@@ -149,7 +152,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(2);
-            assertControlPointType(0, PathType.LINEAR);
+            assertFinalControlPointType(0, PathType.LINEAR);
             assertLength(100);
         }
 
@@ -171,7 +174,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(3);
-            assertControlPointType(0, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(0, PathType.PERFECT_CURVE);
         }
 
         [Test]
@@ -195,7 +198,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(4);
-            assertControlPointType(0, PathType.BEZIER);
+            assertFinalControlPointType(0, PathType.BEZIER);
         }
 
         [Test]
@@ -215,8 +218,8 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertControlPointCount(3);
             assertControlPointPosition(1, new Vector2(100, 0));
             assertControlPointPosition(2, new Vector2(100));
-            assertControlPointType(0, PathType.LINEAR);
+            assertFinalControlPointType(0, PathType.LINEAR);
-            assertControlPointType(1, PathType.LINEAR);
+            assertFinalControlPointType(1, PathType.LINEAR);
         }
 
         [Test]
@@ -239,8 +242,8 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertControlPointCount(4);
             assertControlPointPosition(1, new Vector2(100, 0));
             assertControlPointPosition(2, new Vector2(100));
-            assertControlPointType(0, PathType.LINEAR);
+            assertFinalControlPointType(0, PathType.LINEAR);
-            assertControlPointType(1, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(1, PathType.PERFECT_CURVE);
         }
 
         [Test]
@@ -268,8 +271,46 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertControlPointPosition(2, new Vector2(100));
             assertControlPointPosition(3, new Vector2(200, 100));
             assertControlPointPosition(4, new Vector2(200));
-            assertControlPointType(0, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(0, PathType.PERFECT_CURVE);
-            assertControlPointType(2, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(2, PathType.PERFECT_CURVE);
+        }
+
+        [Test]
+        public void TestManualPathTypeControlViaKeyboard()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300));
+
+            assertControlPointTypeDuringPlacement(0, PathType.PERFECT_CURVE);
+
+            AddRepeatStep("press tab", () => InputManager.Key(Key.Tab), 2);
+            assertControlPointTypeDuringPlacement(0, PathType.LINEAR);
+
+            AddStep("press shift-tab", () =>
+            {
+                InputManager.PressKey(Key.ShiftLeft);
+                InputManager.Key(Key.Tab);
+                InputManager.ReleaseKey(Key.ShiftLeft);
+            });
+            assertControlPointTypeDuringPlacement(0, PathType.BSpline(4));
+
+            AddStep("start new segment via S", () => InputManager.Key(Key.S));
+            assertControlPointTypeDuringPlacement(2, PathType.LINEAR);
+
+            addMovementStep(new Vector2(400, 300));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertFinalControlPointType(0, PathType.BSpline(4));
+            assertFinalControlPointType(2, PathType.PERFECT_CURVE);
         }
 
         [Test]
@@ -293,7 +334,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             addClickStep(MouseButton.Right);
             assertPlaced(true);
 
-            assertControlPointType(0, PathType.BEZIER);
+            assertFinalControlPointType(0, PathType.BEZIER);
         }
 
         [Test]
@@ -312,11 +353,11 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertPlaced(true);
             assertLength(808, tolerance: 10);
             assertControlPointCount(5);
-            assertControlPointType(0, PathType.BSpline(4));
+            assertFinalControlPointType(0, PathType.BSpline(4));
-            assertControlPointType(1, null);
+            assertFinalControlPointType(1, null);
-            assertControlPointType(2, null);
+            assertFinalControlPointType(2, null);
-            assertControlPointType(3, null);
+            assertFinalControlPointType(3, null);
-            assertControlPointType(4, null);
+            assertFinalControlPointType(4, null);
         }
 
         [Test]
@@ -337,10 +378,10 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
             assertPlaced(true);
             assertLength(600, tolerance: 10);
             assertControlPointCount(4);
-            assertControlPointType(0, PathType.BSpline(4));
+            assertFinalControlPointType(0, PathType.BSpline(4));
-            assertControlPointType(1, PathType.BSpline(4));
+            assertFinalControlPointType(1, PathType.BSpline(4));
-            assertControlPointType(2, PathType.BSpline(4));
+            assertFinalControlPointType(2, PathType.BSpline(4));
-            assertControlPointType(3, null);
+            assertFinalControlPointType(3, null);
         }
 
         [Test]
@@ -359,7 +400,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(3);
-            assertControlPointType(0, PathType.BEZIER);
+            assertFinalControlPointType(0, PathType.BEZIER);
         }
 
         [Test]
@@ -379,7 +420,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(3);
-            assertControlPointType(0, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(0, PathType.PERFECT_CURVE);
         }
 
         [Test]
@@ -400,7 +441,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(3);
-            assertControlPointType(0, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(0, PathType.PERFECT_CURVE);
         }
 
         [Test]
@@ -421,7 +462,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(3);
-            assertControlPointType(0, PathType.BEZIER);
+            assertFinalControlPointType(0, PathType.BEZIER);
         }
 
         [Test]
@@ -438,7 +479,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             assertPlaced(true);
             assertControlPointCount(3);
-            assertControlPointType(0, PathType.PERFECT_CURVE);
+            assertFinalControlPointType(0, PathType.PERFECT_CURVE);
         }
 
         private void addMovementStep(Vector2 position) => AddStep($"move mouse to {position}", () => InputManager.MoveMouseTo(InputManager.ToScreenSpace(position)));
@@ -454,7 +495,10 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
         private void assertControlPointCount(int expected) => AddAssert($"has {expected} control points", () => getSlider()!.Path.ControlPoints.Count, () => Is.EqualTo(expected));
 
-        private void assertControlPointType(int index, PathType? type) => AddAssert($"control point {index} is {type?.ToString() ?? "inherit"}", () => getSlider()!.Path.ControlPoints[index].Type, () => Is.EqualTo(type));
+        private void assertControlPointTypeDuringPlacement(int index, PathType? type) => AddAssert($"control point {index} is {type?.ToString() ?? "inherit"}",
+            () => this.ChildrenOfType<PathControlPointPiece<Slider>>().ElementAt(index).ControlPoint.Type, () => Is.EqualTo(type));
+
+        private void assertFinalControlPointType(int index, PathType? type) => AddAssert($"control point {index} is {type?.ToString() ?? "inherit"}", () => getSlider()!.Path.ControlPoints[index].Type, () => Is.EqualTo(type));
 
         private void assertControlPointPosition(int index, Vector2 position) =>
             AddAssert($"control point {index} at {position}", () => Precision.AlmostEquals(position, getSlider()!.Path.ControlPoints[index].Position, 1));

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointVisualiser.cs

@@ -34,7 +34,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
     public partial class PathControlPointVisualiser<T> : CompositeDrawable, IKeyBindingHandler<PlatformAction>, IHasContextMenu
         where T : OsuHitObject, IHasPath
     {
-        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true; // allow context menu to appear outside of the playfield.
+        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true; // allow context menu to appear outside the playfield.
 
         internal readonly Container<PathControlPointPiece<T>> Pieces;
 
@@ -196,6 +196,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                             if (allowSelection)
                                 d.RequestSelection = selectionRequested;
 
+                            d.ControlPoint.Changed += controlPointChanged;
                             d.DragStarted = DragStarted;
                             d.DragInProgress = DragInProgress;
                             d.DragEnded = DragEnded;
@@ -209,6 +210,8 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
                     foreach (var point in e.OldItems.Cast<PathControlPoint>())
                     {
+                        point.Changed -= controlPointChanged;
+
                         foreach (var piece in Pieces.Where(p => p.ControlPoint == point).ToArray())
                             piece.RemoveAndDisposeImmediately();
                     }
@@ -217,6 +220,8 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
             }
         }
 
+        private void controlPointChanged() => updateCurveMenuItems();
+
         protected override bool OnClick(ClickEvent e)
         {
             if (Pieces.Any(piece => piece.IsHovered))
@@ -245,6 +250,86 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         {
         }
 
+        // ReSharper disable once StaticMemberInGenericType
+        private static readonly PathType?[] path_types =
+        [
+            PathType.LINEAR,
+            PathType.BEZIER,
+            PathType.PERFECT_CURVE,
+            PathType.BSpline(4),
+            null,
+        ];
+
+        protected override bool OnKeyDown(KeyDownEvent e)
+        {
+            if (e.Repeat)
+                return false;
+
+            switch (e.Key)
+            {
+                case Key.Tab:
+                {
+                    var selectedPieces = Pieces.Where(p => p.IsSelected.Value).ToArray();
+                    if (selectedPieces.Length != 1)
+                        return false;
+
+                    var selectedPiece = selectedPieces.Single();
+                    var selectedPoint = selectedPiece.ControlPoint;
+
+                    var validTypes = path_types;
+
+                    if (selectedPoint == controlPoints[0])
+                        validTypes = validTypes.Where(t => t != null).ToArray();
+
+                    int currentTypeIndex = Array.IndexOf(validTypes, selectedPoint.Type);
+
+                    if (currentTypeIndex < 0 && e.ShiftPressed)
+                        currentTypeIndex = 0;
+
+                    changeHandler?.BeginChange();
+
+                    do
+                    {
+                        currentTypeIndex = (validTypes.Length + currentTypeIndex + (e.ShiftPressed ? -1 : 1)) % validTypes.Length;
+
+                        updatePathTypeOfSelectedPieces(validTypes[currentTypeIndex]);
+                    } while (selectedPoint.Type != validTypes[currentTypeIndex]);
+
+                    changeHandler?.EndChange();
+
+                    return true;
+                }
+
+                case Key.Number1:
+                case Key.Number2:
+                case Key.Number3:
+                case Key.Number4:
+                case Key.Number5:
+                {
+                    if (!e.AltPressed)
+                        return false;
+
+                    var type = path_types[e.Key - Key.Number1];
+
+                    if (Pieces[0].IsSelected.Value && type == null)
+                        return false;
+
+                    updatePathTypeOfSelectedPieces(type);
+                    return true;
+                }
+
+                default:
+                    return false;
+            }
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+            foreach (var p in Pieces)
+                p.ControlPoint.Changed -= controlPointChanged;
+        }
+
         private void selectionRequested(PathControlPointPiece<T> piece, MouseButtonEvent e)
         {
             if (e.Button == MouseButton.Left && inputManager.CurrentState.Keyboard.ControlPressed)
@@ -254,16 +339,19 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         }
 
         /// <summary>
-        /// Attempts to set the given control point piece to the given path type.
+        /// Attempts to set all selected control point pieces to the given path type.
-        /// If that would fail, try to change the path such that it instead succeeds
+        /// If that fails, try to change the path such that it instead succeeds
         /// in a UX-friendly way.
         /// </summary>
-        /// <param name="piece">The control point piece that we want to change the path type of.</param>
         /// <param name="type">The path type we want to assign to the given control point piece.</param>
-        private void updatePathType(PathControlPointPiece<T> piece, PathType? type)
+        private void updatePathTypeOfSelectedPieces(PathType? type)
         {
-            var pointsInSegment = hitObject.Path.PointsInSegment(piece.ControlPoint);
+            changeHandler?.BeginChange();
-            int indexInSegment = pointsInSegment.IndexOf(piece.ControlPoint);
+
+            foreach (var p in Pieces.Where(p => p.IsSelected.Value))
+            {
+                var pointsInSegment = hitObject.Path.PointsInSegment(p.ControlPoint);
+                int indexInSegment = pointsInSegment.IndexOf(p.ControlPoint);
 
                 if (type?.Type == SplineType.PerfectCurve)
                 {
@@ -277,7 +365,12 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                 }
 
                 hitObject.Path.ExpectedDistance.Value = null;
-            piece.ControlPoint.Type = type;
+                p.ControlPoint.Type = type;
+            }
+
+            EnsureValidPathTypes();
+
+            changeHandler?.EndChange();
         }
 
         [Resolved(CanBeNull = true)]
@@ -290,6 +383,8 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         private int draggedControlPointIndex;
         private HashSet<PathControlPoint> selectedControlPoints;
 
+        private List<MenuItem> curveTypeItems;
+
         public void DragStarted(PathControlPoint controlPoint)
         {
             dragStartPositions = hitObject.Path.ControlPoints.Select(point => point.Position).ToArray();
@@ -386,22 +481,27 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                 var splittablePieces = selectedPieces.Where(isSplittable).ToList();
                 int splittableCount = splittablePieces.Count;
 
-                List<MenuItem> curveTypeItems = new List<MenuItem>();
+                curveTypeItems = new List<MenuItem>();
 
-                if (!selectedPieces.Contains(Pieces[0]))
+                foreach (PathType? type in path_types)
                 {
-                    curveTypeItems.Add(createMenuItemForPathType(null));
+                    // special inherit case
+                    if (type == null)
+                    {
+                        if (selectedPieces.Contains(Pieces[0]))
+                            continue;
+
                         curveTypeItems.Add(new OsuMenuItemSpacer());
                     }
 
-                // todo: hide/disable items which aren't valid for selected points
+                    curveTypeItems.Add(createMenuItemForPathType(type));
-                curveTypeItems.Add(createMenuItemForPathType(PathType.LINEAR));
+                }
-                curveTypeItems.Add(createMenuItemForPathType(PathType.PERFECT_CURVE));
-                curveTypeItems.Add(createMenuItemForPathType(PathType.BEZIER));
-                curveTypeItems.Add(createMenuItemForPathType(PathType.BSpline(4)));
 
                 if (selectedPieces.Any(piece => piece.ControlPoint.Type?.Type == SplineType.Catmull))
+                {
+                    curveTypeItems.Add(new OsuMenuItemSpacer());
                     curveTypeItems.Add(createMenuItemForPathType(PathType.CATMULL));
+                }
 
                 var menuItems = new List<MenuItem>
                 {
@@ -424,26 +524,23 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                         () => DeleteSelected())
                 );
 
+                updateCurveMenuItems();
+
                 return menuItems.ToArray();
+
+                CurveTypeMenuItem createMenuItemForPathType(PathType? type) => new CurveTypeMenuItem(type, _ => updatePathTypeOfSelectedPieces(type));
             }
         }
 
-        private MenuItem createMenuItemForPathType(PathType? type)
+        private void updateCurveMenuItems()
+        {
+            if (curveTypeItems == null)
+                return;
+
+            foreach (var item in curveTypeItems.OfType<CurveTypeMenuItem>())
             {
                 int totalCount = Pieces.Count(p => p.IsSelected.Value);
-            int countOfState = Pieces.Where(p => p.IsSelected.Value).Count(p => p.ControlPoint.Type == type);
+                int countOfState = Pieces.Where(p => p.IsSelected.Value).Count(p => p.ControlPoint.Type == item.PathType);
-
-            var item = new TernaryStateRadioMenuItem(type?.Description ?? "Inherit", MenuItemType.Standard, _ =>
-            {
-                changeHandler?.BeginChange();
-
-                foreach (var p in Pieces.Where(p => p.IsSelected.Value))
-                    updatePathType(p, type);
-
-                EnsureValidPathTypes();
-
-                changeHandler?.EndChange();
-            });
 
                 if (countOfState == totalCount)
                     item.State.Value = TernaryState.True;
@@ -451,8 +548,18 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                     item.State.Value = TernaryState.Indeterminate;
                 else
                     item.State.Value = TernaryState.False;
+            }
+        }
 
-            return item;
+        private class CurveTypeMenuItem : TernaryStateRadioMenuItem
+        {
+            public readonly PathType? PathType;
+
+            public CurveTypeMenuItem(PathType? pathType, Action<TernaryState> action)
+                : base(pathType?.Description ?? "Inherit", MenuItemType.Standard, action)
+            {
+                PathType = pathType;
+            }
         }
     }
 }

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs

@@ -40,6 +40,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
         private PathControlPoint segmentStart;
         private PathControlPoint cursor;
         private int currentSegmentLength;
+        private bool usingCustomSegmentType;
 
         [Resolved(CanBeNull = true)]
         [CanBeNull]
@@ -149,12 +150,17 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
 
                 case SliderPlacementState.ControlPoints:
                     if (canPlaceNewControlPoint(out var lastPoint))
-                    {
+                        placeNewControlPoint();
-                        // Place a new point by detatching the current cursor.
-                        updateCursor();
-                        cursor = null;
-                    }
                     else
+                        beginNewSegment(lastPoint);
+
+                    break;
+            }
+
+            return true;
+        }
+
+        private void beginNewSegment(PathControlPoint lastPoint)
         {
             // Transform the last point into a new segment.
             Debug.Assert(lastPoint != null);
@@ -163,12 +169,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             segmentStart.Type = PathType.LINEAR;
 
             currentSegmentLength = 1;
-                    }
+            usingCustomSegmentType = false;
-
-                    break;
-            }
-
-            return true;
         }
 
         protected override bool OnDragStart(DragStartEvent e)
@@ -223,6 +224,72 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             base.OnMouseUp(e);
         }
 
+        private static readonly PathType[] path_types =
+        [
+            PathType.LINEAR,
+            PathType.BEZIER,
+            PathType.PERFECT_CURVE,
+            PathType.BSpline(4),
+        ];
+
+        protected override bool OnKeyDown(KeyDownEvent e)
+        {
+            if (e.Repeat)
+                return false;
+
+            if (state != SliderPlacementState.ControlPoints)
+                return false;
+
+            switch (e.Key)
+            {
+                case Key.S:
+                {
+                    if (!canPlaceNewControlPoint(out _))
+                        return false;
+
+                    placeNewControlPoint();
+                    var last = HitObject.Path.ControlPoints.Last(p => p != cursor);
+                    beginNewSegment(last);
+                    return true;
+                }
+
+                case Key.Number1:
+                case Key.Number2:
+                case Key.Number3:
+                case Key.Number4:
+                {
+                    if (!e.AltPressed)
+                        return false;
+
+                    usingCustomSegmentType = true;
+                    segmentStart.Type = path_types[e.Key - Key.Number1];
+                    controlPointVisualiser.EnsureValidPathTypes();
+                    return true;
+                }
+
+                case Key.Tab:
+                {
+                    usingCustomSegmentType = true;
+
+                    int currentTypeIndex = segmentStart.Type.HasValue ? Array.IndexOf(path_types, segmentStart.Type.Value) : -1;
+
+                    if (currentTypeIndex < 0 && e.ShiftPressed)
+                        currentTypeIndex = 0;
+
+                    do
+                    {
+                        currentTypeIndex = (path_types.Length + currentTypeIndex + (e.ShiftPressed ? -1 : 1)) % path_types.Length;
+                        segmentStart.Type = path_types[currentTypeIndex];
+                        controlPointVisualiser.EnsureValidPathTypes();
+                    } while (segmentStart.Type != path_types[currentTypeIndex]);
+
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
         protected override void Update()
         {
             base.Update();
@@ -246,6 +313,12 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
 
         private void updatePathType()
         {
+            if (usingCustomSegmentType)
+            {
+                controlPointVisualiser.EnsureValidPathTypes();
+                return;
+            }
+
             if (state == SliderPlacementState.Drawing)
             {
                 segmentStart.Type = PathType.BSpline(4);
@@ -316,6 +389,13 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             return lastPiece.IsHovered != true;
         }
 
+        private void placeNewControlPoint()
+        {
+            // Place a new point by detatching the current cursor.
+            updateCursor();
+            cursor = null;
+        }
+
         private void updateSlider()
         {
             if (state == SliderPlacementState.Drawing)

osu.Game.Rulesets.Osu/Edit/SliderCompositionTool.cs

@@ -15,6 +15,13 @@ namespace osu.Game.Rulesets.Osu.Edit
         public SliderCompositionTool()
             : base(nameof(Slider))
         {
+            TooltipText = """
+                Left click for new point.
+                Left click twice or S key for new segment.
+                Tab, Shift-Tab, or Alt-1~4 to change current segment type.
+                Right click to finish.
+                Click and drag for drawing mode.
+                """;
         }
 
         public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Sliders);

osu.Game/Rulesets/Edit/HitObjectComposer.cs

@@ -215,14 +215,14 @@ namespace osu.Game.Rulesets.Edit
 
             toolboxCollection.Items = CompositionTools
                                       .Prepend(new SelectTool())
-                                      .Select(t => new RadioButton(t.Name, () => toolSelected(t), t.CreateIcon))
+                                      .Select(t => new HitObjectCompositionToolButton(t, () => toolSelected(t)))
                                       .ToList();
 
             foreach (var item in toolboxCollection.Items)
             {
                 item.Selected.DisabledChanged += isDisabled =>
                 {
-                    item.TooltipText = isDisabled ? "Add at least one timing point first!" : string.Empty;
+                    item.TooltipText = isDisabled ? "Add at least one timing point first!" : ((HitObjectCompositionToolButton)item).TooltipText;
                 };
             }
 

osu.Game/Rulesets/Edit/HitObjectCompositionToolButton.cs

@@ -0,0 +1,22 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Game.Rulesets.Edit.Tools;
+using osu.Game.Screens.Edit.Components.RadioButtons;
+
+namespace osu.Game.Rulesets.Edit
+{
+    public class HitObjectCompositionToolButton : RadioButton
+    {
+        public HitObjectCompositionTool Tool { get; }
+
+        public HitObjectCompositionToolButton(HitObjectCompositionTool tool, Action? action)
+            : base(tool.Name, action, tool.CreateIcon)
+        {
+            Tool = tool;
+
+            TooltipText = tool.TooltipText;
+        }
+    }
+}

osu.Game/Rulesets/Edit/Tools/HitObjectCompositionTool.cs

@@ -1,9 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using osu.Framework.Graphics;
+using osu.Framework.Localisation;
 
 namespace osu.Game.Rulesets.Edit.Tools
 {
@@ -11,14 +10,16 @@ namespace osu.Game.Rulesets.Edit.Tools
     {
         public readonly string Name;
 
+        public LocalisableString TooltipText { get; init; }
+
         protected HitObjectCompositionTool(string name)
         {
             Name = name;
         }
 
-        public abstract PlacementBlueprint CreatePlacementBlueprint();
+        public abstract PlacementBlueprint? CreatePlacementBlueprint();
 
-        public virtual Drawable CreateIcon() => null;
+        public virtual Drawable? CreateIcon() => null;
 
         public override string ToString() => Name;
     }

osu.Game/Screens/Edit/Components/RadioButtons/RadioButton.cs

@@ -24,11 +24,11 @@ namespace osu.Game.Screens.Edit.Components.RadioButtons
         /// <summary>
         /// A function which creates a drawable icon to represent this item. If null, a sane default should be used.
         /// </summary>
-        public readonly Func<Drawable>? CreateIcon;
+        public readonly Func<Drawable?>? CreateIcon;
 
         private readonly Action? action;
 
-        public RadioButton(string label, Action? action, Func<Drawable>? createIcon = null)
+        public RadioButton(string label, Action? action, Func<Drawable?>? createIcon = null)
         {
             Label = label;
             CreateIcon = createIcon;