add basic control by grid tool box

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

@@ -65,6 +65,9 @@ namespace osu.Game.Rulesets.Osu.Edit
         [Cached(typeof(IDistanceSnapProvider))]
         protected readonly OsuDistanceSnapProvider DistanceSnapProvider = new OsuDistanceSnapProvider();
 
+        [Cached]
+        protected readonly GridToolboxGroup GridToolboxGroup = new GridToolboxGroup();
+
         [Cached]
         protected readonly FreehandSliderToolboxGroup FreehandlSliderToolboxGroup = new FreehandSliderToolboxGroup();
 
@@ -99,8 +102,16 @@ namespace osu.Game.Rulesets.Osu.Edit
             // we may be entering the screen with a selection already active
             updateDistanceSnapGrid();
 
+            GridToolboxGroup.StartPositionX.ValueChanged += x =>
+                rectangularPositionSnapGrid.StartPosition = new Vector2(x.NewValue, rectangularPositionSnapGrid.StartPosition.Y);
+            GridToolboxGroup.StartPositionY.ValueChanged += y =>
+                rectangularPositionSnapGrid.StartPosition = new Vector2(rectangularPositionSnapGrid.StartPosition.X, y.NewValue);
+            GridToolboxGroup.Spacing.ValueChanged += s => rectangularPositionSnapGrid.Spacing = new Vector2(s.NewValue);
+            GridToolboxGroup.GridLinesRotation.ValueChanged += r => rectangularPositionSnapGrid.GridLineRotation = r.NewValue;
+
             RightToolbox.AddRange(new EditorToolboxGroup[]
                 {
+                    GridToolboxGroup,
                     new TransformToolboxGroup { RotationHandler = BlueprintContainer.SelectionHandler.RotationHandler, },
                     FreehandlSliderToolboxGroup
                 }

osu.Game/Rulesets/Edit/GridToolboxGroup.cs

@@ -0,0 +1,108 @@
+// 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 osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Screens.Edit;
+
+namespace osu.Game.Rulesets.Edit
+{
+    public partial class GridToolboxGroup : EditorToolboxGroup
+    {
+        [Resolved]
+        private EditorBeatmap editorBeatmap { get; set; } = null!;
+
+        public GridToolboxGroup()
+            : base("grid")
+        {
+        }
+
+        public BindableFloat StartPositionX { get; } = new BindableFloat(256f)
+        {
+            MinValue = 0f,
+            MaxValue = 512f,
+            Precision = 1f
+        };
+
+        public BindableFloat StartPositionY { get; } = new BindableFloat(192)
+        {
+            MinValue = 0f,
+            MaxValue = 384f,
+            Precision = 1f
+        };
+
+        public BindableFloat Spacing { get; } = new BindableFloat(4f)
+        {
+            MinValue = 4f,
+            MaxValue = 128f,
+            Precision = 1f
+        };
+
+        public BindableFloat GridLinesRotation { get; } = new BindableFloat(0f)
+        {
+            MinValue = -180f,
+            MaxValue = 180f,
+            Precision = 1f
+        };
+
+        private ExpandableSlider<float> startPositionXSlider = null!;
+        private ExpandableSlider<float> startPositionYSlider = null!;
+        private ExpandableSlider<float> spacingSlider = null!;
+        private ExpandableSlider<float> gridLinesRotationSlider = null!;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Children = new Drawable[]
+            {
+                startPositionXSlider = new ExpandableSlider<float>
+                {
+                    Current = StartPositionX
+                },
+                startPositionYSlider = new ExpandableSlider<float>
+                {
+                    Current = StartPositionY
+                },
+                spacingSlider = new ExpandableSlider<float>
+                {
+                    Current = Spacing
+                },
+                gridLinesRotationSlider = new ExpandableSlider<float>
+                {
+                    Current = GridLinesRotation
+                }
+            };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            StartPositionX.BindValueChanged(x =>
+            {
+                startPositionXSlider.ContractedLabelText = $"X: {x.NewValue:N0}";
+                startPositionXSlider.ExpandedLabelText = $"X Offset: {x.NewValue:N0}";
+            }, true);
+
+            StartPositionY.BindValueChanged(y =>
+            {
+                startPositionYSlider.ContractedLabelText = $"Y: {y.NewValue:N0}";
+                startPositionYSlider.ExpandedLabelText = $"Y Offset: {y.NewValue:N0}";
+            }, true);
+
+            Spacing.BindValueChanged(spacing =>
+            {
+                spacingSlider.ContractedLabelText = $"S: {spacing.NewValue:N0}";
+                spacingSlider.ExpandedLabelText = $"Spacing: {spacing.NewValue:N0}";
+            }, true);
+
+            GridLinesRotation.BindValueChanged(rotation =>
+            {
+                gridLinesRotationSlider.ContractedLabelText = $"R: {rotation.NewValue:N0}";
+                gridLinesRotationSlider.ExpandedLabelText = $"Rotation: {rotation.NewValue:N0}";
+            }, true);
+        }
+    }
+}