Added TestCase

osu.Desktop.VisualTests/Tests/TestCaseBeatSyncedContainer.cs

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+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Testing;
+using osu.Framework.Graphics;
+using osu.Framework.Timing;
+using osu.Game.Overlays;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics.Containers;
+using osu.Framework.Audio.Track;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Framework.Graphics.Shapes;
+using OpenTK.Graphics;
+using osu.Game.Graphics.Sprites;
+using osu.Framework.Lists;
+using System;
+using System.Globalization;
+
+namespace osu.Desktop.VisualTests.Tests
+{
+    internal class TestCaseBeatSyncedContainer : TestCase
+    {
+        public override string Description => @"Tests beat synced containers.";
+
+        private MusicController mc;
+
+        public TestCaseBeatSyncedContainer()
+        {
+            Clock = new FramedClock();
+        }
+
+        public override void Reset()
+        {
+            base.Reset();
+            Clock.ProcessFrame();
+
+            Add(new BeatContainer
+            {
+                Anchor = Anchor.BottomCentre,
+                Origin = Anchor.BottomCentre,
+            });
+
+            Add(mc = new MusicController
+            {
+                Origin = Anchor.TopRight,
+                Anchor = Anchor.TopRight,
+            });
+            mc.State = Visibility.Visible;
+        }
+
+        private class BeatContainer : BeatSyncedContainer
+        {
+            private const int flash_layer_heigth = 150;
+
+            private readonly InfoString timingPointCount;
+            private readonly InfoString currentTimingPoint;
+            private readonly InfoString beatCount;
+            private readonly InfoString currentBeat;
+            private readonly InfoString beatsPerMinute;
+            private readonly InfoString beatLength;
+
+            private readonly Box flashLayer;
+
+            public BeatContainer()
+            {
+                RelativeSizeAxes = Axes.X;
+                AutoSizeAxes = Axes.Y;
+                Children = new Drawable[]
+                {
+                    new FillFlowContainer
+                    {
+                        Name = @"Info Layer",
+                        Anchor = Anchor.BottomLeft,
+                        Origin = Anchor.BottomLeft,
+                        Direction = FillDirection.Vertical,
+                        AutoSizeAxes = Axes.Both,
+                        Margin = new MarginPadding { Bottom = flash_layer_heigth, },
+                        Children = new Drawable[]
+                        {
+                            timingPointCount = new InfoString(@"Timing points amount: "),
+                            currentTimingPoint = new InfoString(@"Current timing point: "),
+                            beatCount = new InfoString(@"Beats amount (in the current timing point): "),
+                            currentBeat = new InfoString(@"Current beat: "),
+                            beatsPerMinute = new InfoString(@"BPM: "),
+                            beatLength = new InfoString(@"Beat length: "),
+                        }
+                    },
+                    new Container
+                    {
+                        Name = @"Color indicator",
+                        Anchor = Anchor.BottomCentre,
+                        Origin = Anchor.BottomCentre,
+                        RelativeSizeAxes = Axes.X,
+                        Height = flash_layer_heigth,
+                        Children = new Drawable[]
+                        {
+                            new Box
+                            {
+                                RelativeSizeAxes = Axes.Both,
+                                Colour = Color4.Black,
+                            },
+                            flashLayer = new Box
+                            {
+                                RelativeSizeAxes = Axes.Both,
+                                Colour = Color4.White,
+                                Alpha = 0,
+                            }
+                        }
+                    }
+                };
+
+                Beatmap.ValueChanged += delegate
+                {
+                    timingPointCount.Value = 0;
+                    currentTimingPoint.Value = 0;
+                    beatCount.Value = 0;
+                    currentBeat.Value = 0;
+                    beatsPerMinute.Value = 0;
+                    beatLength.Value = 0;
+                };
+            }
+
+            private SortedList<TimingControlPoint> timingPoints => Beatmap.Value.Beatmap.ControlPointInfo.TimingPoints;
+            private TimingControlPoint getNextTimingPoint(TimingControlPoint current)
+            {
+                if (timingPoints[timingPoints.Count - 1] == current)
+                    return current;
+
+                return timingPoints[timingPoints.IndexOf(current) + 1];
+            }
+
+            private int calculateBeatCount(TimingControlPoint current)
+            {
+                if (timingPoints.IndexOf(current) + 1 == timingPoints.Count)
+                    return (int)Math.Ceiling((Beatmap.Value.Track.Length - current.Time) / current.BeatLength);
+
+                return (int)Math.Ceiling((getNextTimingPoint(current).Time - current.Time) / current.BeatLength);
+            }
+
+            protected override void OnNewBeat(int beatIndex, TimingControlPoint timingPoint, EffectControlPoint effectPoint, TrackAmplitudes amplitudes)
+            {
+                base.OnNewBeat(beatIndex, timingPoint, effectPoint, amplitudes);
+
+                timingPointCount.Value = timingPoints.Count;
+                currentTimingPoint.Value = timingPoints.IndexOf(timingPoint) + 1;
+                beatCount.Value = calculateBeatCount(timingPoint);
+                currentBeat.Value = beatIndex + 1;
+                beatsPerMinute.Value = (float)Math.Round(60000 / timingPoint.BeatLength, 1);
+                beatLength.Value = (float)timingPoint.BeatLength;
+
+                flashLayer.ClearTransforms();
+                flashLayer.FadeTo(1);
+                flashLayer.FadeTo(0, timingPoint.BeatLength);
+            }
+        }
+
+        private class InfoString : FillFlowContainer
+        {
+            private const int text_size = 20;
+            private const int margin = 7;
+
+            private readonly OsuSpriteText valueText;
+
+            private float? value;
+            public float Value
+            {
+                set
+                {
+                    if (value == this.value) return;
+                    this.value = value;
+
+                    valueText.Text = value.ToString(CultureInfo.CurrentCulture);
+                }
+            }
+
+            public InfoString(string header)
+            {
+                AutoSizeAxes = Axes.Both;
+                Direction = FillDirection.Horizontal;
+                Add(new OsuSpriteText { Text = header, TextSize = text_size });
+                Add(valueText = new OsuSpriteText() { TextSize = text_size });
+                Margin = new MarginPadding { Vertical = margin, };
+            }
+        }
+    }
+}