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133 lines
4.6 KiB
C#
133 lines
4.6 KiB
C#
// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System;
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using osu.Framework.Caching;
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using OpenTK.Graphics;
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using osu.Framework.Extensions.Color4Extensions;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Graphics.Shapes;
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using osu.Game.Graphics;
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namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
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{
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/// <summary>
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/// Represents length-wise portion of a hold note.
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/// </summary>
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internal class BodyPiece : Container, IHasAccentColour
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{
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private readonly Container subtractionLayer;
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private readonly Drawable background;
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private readonly BufferedContainer foreground;
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private readonly BufferedContainer subtractionContainer;
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public BodyPiece()
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{
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Blending = BlendingMode.Additive;
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Children = new[]
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{
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background = new Box { RelativeSizeAxes = Axes.Both },
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foreground = new BufferedContainer
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{
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RelativeSizeAxes = Axes.Both,
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CacheDrawnFrameBuffer = true,
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Children = new Drawable[]
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{
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new Box { RelativeSizeAxes = Axes.Both },
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subtractionContainer = new BufferedContainer
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{
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RelativeSizeAxes = Axes.Both,
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// This is needed because we're blending with another object
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BackgroundColour = Color4.White.Opacity(0),
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CacheDrawnFrameBuffer = true,
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// The 'hole' is achieved by subtracting the result of this container with the parent
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Blending = new BlendingParameters { AlphaEquation = BlendingEquation.ReverseSubtract },
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Child = subtractionLayer = new CircularContainer
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{
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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// Height computed in Update
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Width = 1,
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Masking = true,
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Child = new Box
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{
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RelativeSizeAxes = Axes.Both,
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Alpha = 0,
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AlwaysPresent = true
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}
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}
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}
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}
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}
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};
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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updateAccentColour();
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}
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private Color4 accentColour;
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public Color4 AccentColour
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{
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get { return accentColour; }
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set
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{
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if (accentColour == value)
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return;
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accentColour = value;
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updateAccentColour();
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}
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}
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private Cached subtractionCache = new Cached();
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public override bool Invalidate(Invalidation invalidation = Invalidation.All, Drawable source = null, bool shallPropagate = true)
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{
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if ((invalidation & Invalidation.DrawSize) > 0)
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subtractionCache.Invalidate();
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return base.Invalidate(invalidation, source, shallPropagate);
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}
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protected override void Update()
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{
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base.Update();
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if (!subtractionCache.IsValid)
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{
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subtractionLayer.Width = 5;
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subtractionLayer.Height = Math.Max(0, DrawHeight - DrawWidth);
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subtractionLayer.EdgeEffect = new EdgeEffectParameters
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{
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Colour = Color4.White,
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Type = EdgeEffectType.Glow,
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Radius = DrawWidth
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};
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foreground.ForceRedraw();
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subtractionContainer.ForceRedraw();
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subtractionCache.Validate();
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}
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}
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private void updateAccentColour()
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{
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if (!IsLoaded)
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return;
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foreground.Colour = AccentColour.Opacity(0.4f);
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background.Colour = AccentColour.Opacity(0.2f);
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subtractionCache.Invalidate();
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}
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}
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}
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