Make the grid layer for the composer.

osu.Game.Rulesets.Karaoke/Screens/Edit/Beatmaps/Lyrics/Content/Components/Lyrics/GridLayer.cs

@@ -0,0 +1,65 @@
+// Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Game.Rulesets.Karaoke.Objects;
+using osu.Game.Screens.Edit.Compose.Components;
+using osuTK;
+
+namespace osu.Game.Rulesets.Karaoke.Screens.Edit.Beatmaps.Lyrics.Content.Components.Lyrics;
+
+public partial class GridLayer : Layer
+{
+    private readonly RectangularPositionSnapGrid rectangularPositionSnapGrid;
+
+    public GridLayer(Lyric lyric)
+        : base(lyric)
+    {
+        InternalChild = rectangularPositionSnapGrid = new RectangularPositionSnapGrid
+        {
+            RelativeSizeAxes = Axes.Both,
+        };
+    }
+
+    public int Spacing
+    {
+        get => rectangularPositionSnapGrid.Spacing;
+        set => rectangularPositionSnapGrid.Spacing = value;
+    }
+
+    public override void UpdateDisableEditState(bool editable)
+    {
+        this.FadeTo(editable ? 1 : 0.5f, 100);
+    }
+
+    private partial class RectangularPositionSnapGrid : LinedPositionSnapGrid
+    {
+        protected override void CreateContent()
+        {
+            GenerateGridLines(new Vector2(0, -Spacing), DrawSize);
+            GenerateGridLines(new Vector2(0, Spacing), DrawSize);
+
+            GenerateGridLines(new Vector2(-Spacing, 0), DrawSize);
+            GenerateGridLines(new Vector2(Spacing, 0), DrawSize);
+
+            GenerateOutline(DrawSize);
+        }
+
+        public override Vector2 GetSnappedPosition(Vector2 original)
+        {
+            return StartPosition.Value + original;
+        }
+
+        private int spacing;
+
+        public int Spacing
+        {
+            get => spacing;
+            set
+            {
+                spacing = value;
+                GridCache.Invalidate();
+            }
+        }
+    }
+}

osu.Game.Rulesets.Karaoke/Screens/Edit/Beatmaps/Lyrics/Content/Compose/LyricEditor.cs

@@ -54,6 +54,10 @@ public LyricEditor()
                 },
                 Layers = new Layer[]
                 {
+                    new GridLayer(lyric)
+                    {
+                        Spacing = 10,
+                    },
                     new LyricLayer(lyric),
                     new EditLyricLayer(lyric),
                     new TimeTagLayer(lyric),