Implement song select v2 difficulty name content component

osu.Game.Tests/Visual/SongSelectV2/TestSceneDifficultyNameContent.cs

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+// 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.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Localisation;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Screens.SelectV2.Wedge;
+
+namespace osu.Game.Tests.Visual.SongSelectV2
+{
+    public partial class TestSceneDifficultyNameContent : SongSelectComponentsTestScene
+    {
+        private Container? content;
+        private DifficultyNameContent? difficultyNameContent;
+        private float relativeWidth;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            AddSliderStep("change relative width", 0, 1f, 0.5f, v =>
+            {
+                if (content != null)
+                    content.Width = v;
+
+                relativeWidth = v;
+            });
+        }
+
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+
+            AddStep("set content", () =>
+            {
+                Child = content = new Container
+                {
+                    RelativeSizeAxes = Axes.X,
+                    AutoSizeAxes = Axes.Y,
+                    Padding = new MarginPadding(10),
+                    Width = relativeWidth,
+                    Children = new Drawable[]
+                    {
+                        new Box
+                        {
+                            RelativeSizeAxes = Axes.Both,
+                            Colour = ColourProvider.Background5,
+                        },
+                        new Container
+                        {
+                            RelativeSizeAxes = Axes.X,
+                            AutoSizeAxes = Axes.Y,
+                            Padding = new MarginPadding(10),
+                            Child = difficultyNameContent = new DifficultyNameContent(),
+                        }
+                    }
+                };
+            });
+        }
+
+        [Test]
+        public void TestLocalBeatmap()
+        {
+            AddAssert("difficulty name is not set", () => LocalisableString.IsNullOrEmpty(difficultyNameContent.ChildrenOfType<TruncatingSpriteText>().Single().Text));
+            AddAssert("author is not set", () => !difficultyNameContent.ChildrenOfType<LinkFlowContainer>().Single().ChildrenOfType<OsuSpriteText>().Any());
+
+            AddStep("set beatmap", () => Beatmap.Value = CreateWorkingBeatmap(new Beatmap
+            {
+                BeatmapInfo = new BeatmapInfo
+                {
+                    DifficultyName = "really long difficulty name that gets truncated",
+                    Metadata = new BeatmapMetadata
+                    {
+                        Author = { Username = "really long username that is autosized" },
+                    },
+                    OnlineID = 1,
+                }
+            }));
+
+            AddAssert("difficulty name is set", () => !LocalisableString.IsNullOrEmpty(difficultyNameContent.ChildrenOfType<TruncatingSpriteText>().Single().Text));
+            AddAssert("author is set", () => difficultyNameContent.ChildrenOfType<LinkFlowContainer>().Single().ChildrenOfType<OsuSpriteText>().Any());
+        }
+
+        [Test]
+        public void TestNullBeatmap()
+        {
+            AddStep("set beatmap", () => BeatmapInfo.Value = null);
+        }
+    }
+}

osu.Game/Screens/SelectV2/Wedge/DifficultyNameContent.cs

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+// 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.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Beatmaps;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+
+namespace osu.Game.Screens.SelectV2.Wedge
+{
+    public partial class DifficultyNameContent : CompositeDrawable
+    {
+        private OsuSpriteText difficultyName = null!;
+        private OsuSpriteText mappedByLabel = null!;
+        private LinkFlowContainer mapperName = null!;
+
+        [Resolved]
+        private IBindable<IBeatmapInfo?> beatmapInfo { get; set; } = null!;
+
+        public DifficultyNameContent()
+        {
+            RelativeSizeAxes = Axes.X;
+            AutoSizeAxes = Axes.Y;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            InternalChild = new FillFlowContainer
+            {
+                RelativeSizeAxes = Axes.X,
+                AutoSizeAxes = Axes.Y,
+                Direction = FillDirection.Horizontal,
+                Children = new Drawable[]
+                {
+                    difficultyName = new TruncatingSpriteText
+                    {
+                        Anchor = Anchor.BottomLeft,
+                        Origin = Anchor.BottomLeft,
+                        Font = OsuFont.GetFont(weight: FontWeight.SemiBold),
+                    },
+                    mappedByLabel = new OsuSpriteText
+                    {
+                        Anchor = Anchor.BottomLeft,
+                        Origin = Anchor.BottomLeft,
+                        // TODO: better null display? beatmap carousel panels also just show this text currently.
+                        Text = " mapped by ",
+                        Font = OsuFont.GetFont(size: 14),
+                    },
+                    mapperName = new LinkFlowContainer(t => t.Font = OsuFont.GetFont(weight: FontWeight.SemiBold, size: 14))
+                    {
+                        Anchor = Anchor.BottomLeft,
+                        Origin = Anchor.BottomLeft,
+                        AutoSizeAxes = Axes.Both,
+                    },
+                }
+            };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            beatmapInfo.BindValueChanged(b =>
+            {
+                difficultyName.Text = b.NewValue?.DifficultyName ?? string.Empty;
+                updateMapper();
+            }, true);
+        }
+
+        private void updateMapper()
+        {
+            mapperName.Clear();
+
+            switch (beatmapInfo.Value)
+            {
+                case BeatmapInfo localBeatmap:
+                    // TODO: should be the mapper of the guest difficulty, but that isn't stored correctly yet (see https://github.com/ppy/osu/issues/12965)
+                    mapperName.AddUserLink(localBeatmap.Metadata.Author);
+                    break;
+            }
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            // truncate difficulty name when width exceeds bounds, prioritizing mapper name display
+            difficultyName.MaxWidth = Math.Max(DrawWidth - mappedByLabel.DrawWidth
+                                                         - mapperName.DrawWidth, 0);
+        }
+    }
+}