Merge branch 'master' into implement-grouped-difficulty-icons

osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlay.cs

@@ -135,6 +135,9 @@ namespace osu.Game.Tests.Visual.Online
             });
 
             downloadAssert(true);
+
+            AddStep("show many difficulties", () => overlay.ShowBeatmapSet(createManyDifficultiesBeatmapSet()));
+            downloadAssert(true);
         }
 
         [Test]
@@ -222,6 +225,56 @@ namespace osu.Game.Tests.Visual.Online
             AddStep(@"show without reload", overlay.Show);
         }
 
+        private BeatmapSetInfo createManyDifficultiesBeatmapSet()
+        {
+            var beatmaps = new List<BeatmapInfo>();
+
+            for (int i = 1; i < 41; i++)
+            {
+                beatmaps.Add(new BeatmapInfo
+                {
+                    OnlineBeatmapID = i * 10,
+                    Version = $"Test #{i}",
+                    Ruleset = Ruleset.Value,
+                    StarDifficulty = 2 + i * 0.1,
+                    BaseDifficulty = new BeatmapDifficulty
+                    {
+                        OverallDifficulty = 3.5f,
+                    },
+                    OnlineInfo = new BeatmapOnlineInfo(),
+                    Metrics = new BeatmapMetrics
+                    {
+                        Fails = Enumerable.Range(1, 100).Select(j => j % 12 - 6).ToArray(),
+                        Retries = Enumerable.Range(-2, 100).Select(j => j % 12 - 6).ToArray(),
+                    },
+                });
+            }
+
+            return new BeatmapSetInfo
+            {
+                OnlineBeatmapSetID = 123,
+                Metadata = new BeatmapMetadata
+                {
+                    Title = @"many difficulties beatmap",
+                    Artist = @"none",
+                    Author = new User
+                    {
+                        Username = @"BanchoBot",
+                        Id = 3,
+                    },
+                },
+                OnlineInfo = new BeatmapSetOnlineInfo
+                {
+                    Preview = @"https://b.ppy.sh/preview/123.mp3",
+                    HasVideo = true,
+                    HasStoryboard = true,
+                    Covers = new BeatmapSetOnlineCovers(),
+                },
+                Metrics = new BeatmapSetMetrics { Ratings = Enumerable.Range(0, 11).ToArray() },
+                Beatmaps = beatmaps,
+            };
+        }
+
         private void downloadAssert(bool shown)
         {
             AddAssert($"is download button {(shown ? "shown" : "hidden")}", () => overlay.DownloadButtonsVisible == shown);

osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs

@@ -91,7 +91,8 @@ namespace osu.Game.Overlays.BeatmapSet
                     {
                         difficulties = new DifficultiesContainer
                         {
-                            AutoSizeAxes = Axes.Both,
+                            RelativeSizeAxes = Axes.X,
+                            AutoSizeAxes = Axes.Y,
                             Margin = new MarginPadding { Left = -(tile_icon_padding + tile_spacing / 2) },
                             OnLostHover = () =>
                             {