Allow arbitrary height catch editor

Useful because can see more notes at once.

osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfieldAdjustmentContainer.cs

@@ -0,0 +1,49 @@
+// 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.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.UI;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class CatchEditorPlayfieldAdjustmentContainer : PlayfieldAdjustmentContainer
+    {
+        protected override Container<Drawable> Content => content;
+        private readonly Container content;
+
+        public CatchEditorPlayfieldAdjustmentContainer()
+        {
+            Anchor = Anchor.TopCentre;
+            Origin = Anchor.TopCentre;
+            Size = new Vector2(0.8f, 0.9f);
+
+            InternalChild = new ScalingContainer
+            {
+                Anchor = Anchor.TopCentre,
+                Origin = Anchor.TopCentre,
+                Child = content = new Container { RelativeSizeAxes = Axes.Both },
+            };
+        }
+
+        private class ScalingContainer : Container
+        {
+            public ScalingContainer()
+            {
+                RelativeSizeAxes = Axes.Y;
+                Width = CatchPlayfield.WIDTH;
+            }
+
+            protected override void Update()
+            {
+                base.Update();
+
+                Scale = new Vector2(Math.Min(Parent.ChildSize.X / CatchPlayfield.WIDTH, Parent.ChildSize.Y / CatchPlayfield.HEIGHT));
+                Height = 1 / Scale.Y;
+            }
+        }
+    }
+}

osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs

@@ -51,7 +51,10 @@ private void load()
 
             LayerBelowRuleset.Add(new PlayfieldBorder
             {
-                RelativeSizeAxes = Axes.Both,
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.BottomCentre,
+                RelativeSizeAxes = Axes.X,
+                Height = CatchPlayfield.HEIGHT,
                 PlayfieldBorderStyle = { Value = PlayfieldBorderStyle.Corners }
             });
 

osu.Game.Rulesets.Catch/Edit/DrawableCatchEditorRuleset.cs

@@ -18,6 +18,16 @@ public DrawableCatchEditorRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyLi
         {
         }
 
+        protected override void Update()
+        {
+            base.Update();
+
+            double gamePlayTimeRange = GetTimeRange(Beatmap.Difficulty.ApproachRate);
+            TimeRange.Value = gamePlayTimeRange * (Playfield.DrawHeight / CatchPlayfield.HEIGHT);
+        }
+
         protected override Playfield CreatePlayfield() => new CatchEditorPlayfield(Beatmap.Difficulty);
+
+        public override PlayfieldAdjustmentContainer CreatePlayfieldAdjustmentContainer() => new CatchEditorPlayfieldAdjustmentContainer();
     }
 }

osu.Game.Rulesets.Catch/UI/CatchPlayfield.cs

@@ -23,6 +23,12 @@ public class CatchPlayfield : ScrollingPlayfield
         /// </summary>
         public const float WIDTH = 512;
 
+        /// <summary>
+        /// The height of the playfield.
+        /// This doesn't include the catcher area.
+        /// </summary>
+        public const float HEIGHT = 384;
+
         /// <summary>
         /// The center position of the playfield.
         /// </summary>

osu.Game.Rulesets.Catch/UI/DrawableCatchRuleset.cs

@@ -30,7 +30,7 @@ public DrawableCatchRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod
             : base(ruleset, beatmap, mods)
         {
             Direction.Value = ScrollingDirection.Down;
-            TimeRange.Value = IBeatmapDifficultyInfo.DifficultyRange(beatmap.Difficulty.ApproachRate, 1800, 1200, 450);
+            TimeRange.Value = GetTimeRange(beatmap.Difficulty.ApproachRate);
         }
 
         [BackgroundDependencyLoader]
@@ -39,6 +39,8 @@ private void load()
             KeyBindingInputManager.Add(new CatchTouchInputMapper());
         }
 
+        protected double GetTimeRange(float approachRate) => IBeatmapDifficultyInfo.DifficultyRange(approachRate, 1800, 1200, 450);
+
         protected override ReplayInputHandler CreateReplayInputHandler(Replay replay) => new CatchFramedReplayInputHandler(replay);
 
         protected override ReplayRecorder CreateReplayRecorder(Score score) => new CatchReplayRecorder(score, (CatchPlayfield)Playfield);