Add support for changing dimensions of difficulty spectrum display

osu.Game.Tests/Visual/Beatmaps/TestSceneDifficultySpectrumDisplay.cs

@@ -13,6 +13,8 @@ namespace osu.Game.Tests.Visual.Beatmaps
 {
     public class TestSceneDifficultySpectrumDisplay : OsuTestScene
     {
+        private DifficultySpectrumDisplay display;
+
         private static APIBeatmapSet createBeatmapSetWith(params (int rulesetId, double stars)[] difficulties) => new APIBeatmapSet
         {
             Beatmaps = difficulties.Select(difficulty => new APIBeatmap
@@ -74,7 +76,31 @@ namespace osu.Game.Tests.Visual.Beatmaps
             createDisplay(beatmapSet);
         }
 
-        private void createDisplay(IBeatmapSetInfo beatmapSetInfo) => AddStep("create spectrum display", () => Child = new DifficultySpectrumDisplay(beatmapSetInfo)
+        [Test]
+        public void TestAdjustableDotSize()
+        {
+            var beatmapSet = createBeatmapSetWith(
+                (rulesetId: 0, stars: 2.0),
+                (rulesetId: 3, stars: 2.3),
+                (rulesetId: 0, stars: 3.2),
+                (rulesetId: 1, stars: 4.3),
+                (rulesetId: 0, stars: 5.6));
+
+            createDisplay(beatmapSet);
+
+            AddStep("change dot dimensions", () =>
+            {
+                display.DotSize = new Vector2(8, 12);
+                display.DotSpacing = 2;
+            });
+            AddStep("change dot dimensions back", () =>
+            {
+                display.DotSize = new Vector2(4, 8);
+                display.DotSpacing = 1;
+            });
+        }
+
+        private void createDisplay(IBeatmapSetInfo beatmapSetInfo) => AddStep("create spectrum display", () => Child = display = new DifficultySpectrumDisplay(beatmapSetInfo)
         {
             Anchor = Anchor.Centre,
             Origin = Anchor.Centre,

osu.Game/Beatmaps/Drawables/DifficultySpectrumDisplay.cs

@@ -18,12 +18,40 @@ namespace osu.Game.Beatmaps.Drawables
 {
     public class DifficultySpectrumDisplay : CompositeDrawable
     {
+        private Vector2 dotSize = new Vector2(4, 8);
+
+        public Vector2 DotSize
+        {
+            get => dotSize;
+            set
+            {
+                dotSize = value;
+
+                if (IsLoaded)
+                    updateDotDimensions();
+            }
+        }
+
+        private float dotSpacing = 1;
+
+        public float DotSpacing
+        {
+            get => dotSpacing;
+            set
+            {
+                dotSpacing = value;
+
+                if (IsLoaded)
+                    updateDotDimensions();
+            }
+        }
+
+        private readonly FillFlowContainer<RulesetDifficultyGroup> flow;
+
         public DifficultySpectrumDisplay(IBeatmapSetInfo beatmapSet)
         {
             AutoSizeAxes = Axes.Both;
 
-            FillFlowContainer<RulesetDifficultyGroup> flow;
-
             InternalChild = flow = new FillFlowContainer<RulesetDifficultyGroup>
             {
                 AutoSizeAxes = Axes.Both,
@@ -40,6 +68,21 @@ namespace osu.Game.Beatmaps.Drawables
             }
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            updateDotDimensions();
+        }
+
+        private void updateDotDimensions()
+        {
+            foreach (var group in flow)
+            {
+                group.DotSize = DotSize;
+                group.DotSpacing = DotSpacing;
+            }
+        }
+
         private class RulesetDifficultyGroup : FillFlowContainer
         {
             private readonly int rulesetId;
@@ -53,6 +96,20 @@ namespace osu.Game.Beatmaps.Drawables
                 this.collapsed = collapsed;
             }
 
+            public Vector2 DotSize
+            {
+                set
+                {
+                    foreach (var dot in Children.OfType<DifficultyDot>())
+                        dot.Size = value;
+                }
+            }
+
+            public float DotSpacing
+            {
+                set => Spacing = new Vector2(value, 0);
+            }
+
             [BackgroundDependencyLoader]
             private void load(RulesetStore rulesets)
             {
@@ -98,8 +155,6 @@ namespace osu.Game.Beatmaps.Drawables
             [BackgroundDependencyLoader]
             private void load(OsuColour colours)
             {
-                Width = 4;
-                Height = 8;
                 Anchor = Origin = Anchor.Centre;
                 Masking = true;