Make the column background follow the scroll direction

2025-08-04 15:16:38 +09:00 · 2018-06-07 20:49:06 +09:00
parent 45dca56461
commit 4af8baefc1
3 changed files with 147 additions and 29 deletions
--- a/osu.Game.Rulesets.Mania/UI/Components/ColumnBackground.cs
+++ b/osu.Game.Rulesets.Mania/UI/Components/ColumnBackground.cs
@ -0,0 +1,109 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Colour;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.UI.Scrolling;
+using OpenTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.UI.Components
+{
+    public class ColumnBackground : CompositeDrawable, IHasAccentColour
+    {
+        private readonly ScrollingDirection direction;
+
+        public ColumnBackground(ScrollingDirection direction)
+        {
+            this.direction = direction;
+        }
+
+        private Box background;
+        private Box backgroundOverlay;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            InternalChildren = new[]
+            {
+                background = new Box
+                {
+                    Name = "Background",
+                    RelativeSizeAxes = Axes.Both,
+                    Alpha = 0.3f
+                },
+                backgroundOverlay = new Box
+                {
+                    Name = "Background Gradient Overlay",
+                    RelativeSizeAxes = Axes.Both,
+                    Height = 0.5f,
+                    Anchor = direction == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft,
+                    Origin = direction == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft,
+                    Blending = BlendingMode.Additive,
+                    Alpha = 0
+                }
+            };
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            updateColours();
+        }
+
+        private Color4 accentColour;
+
+        public Color4 AccentColour
+        {
+            get => accentColour;
+            set
+            {
+                if (accentColour == value)
+                    return;
+                accentColour = value;
+
+                updateColours();
+            }
+        }
+
+        private void updateColours()
+        {
+            if (!IsLoaded)
+                return;
+
+            background.Colour = AccentColour;
+
+            var brightPoint = AccentColour.Opacity(0.6f);
+            var dimPoint = AccentColour.Opacity(0);
+
+            backgroundOverlay.Colour = ColourInfo.GradientVertical(
+                direction == ScrollingDirection.Up ? brightPoint : dimPoint,
+                direction == ScrollingDirection.Up ? dimPoint : brightPoint);
+        }
+
+        private bool isLit;
+
+        /// <summary>
+        /// Whether the column lighting should be visible.
+        /// </summary>
+        public bool IsLit
+        {
+            set
+            {
+                if (isLit == value)
+                    return;
+                isLit = value;
+
+                if (isLit)
+                    backgroundOverlay.FadeTo(1, 50, Easing.OutQuint).Then().FadeTo(0.5f, 250, Easing.OutQuint);
+                else
+                    backgroundOverlay.FadeTo(0, 250, Easing.OutQuint);
+            }
+        }
+
+    }
+}