osukey/osu.Game/Screens/Edit/Screens/Compose/Compose.cs

// 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 OpenTK.Graphics;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Framework.Logging;
using osu.Framework.Timing;
using osu.Game.Screens.Edit.Screens.Compose.Timeline;

namespace osu.Game.Screens.Edit.Screens.Compose
{
    public class Compose : EditorScreen
    {
        private const float vertical_margins = 10;
        private const float horizontal_margins = 20;

        private Container composerContainer;

        private readonly IAdjustableClock adjustableClock;
        private readonly IFrameBasedClock framedClock;

        public Compose(IAdjustableClock adjustableClock, IFrameBasedClock framedClock)
        {
            this.adjustableClock = adjustableClock;
            this.framedClock = framedClock;
        }

        [BackgroundDependencyLoader]
        private void load()
        {
            ScrollableTimeline timeline;
            Children = new Drawable[]
            {
                new GridContainer
                {
                    RelativeSizeAxes = Axes.Both,
                    Content = new[]
                    {
                        new Drawable[]
                        {
                            new Container
                            {
                                Name = "Timeline",
                                RelativeSizeAxes = Axes.Both,
                                Children = new Drawable[]
                                {
                                    new Box
                                    {
                                        RelativeSizeAxes = Axes.Both,
                                        Colour = Color4.Black.Opacity(0.5f)
                                    },
                                    new Container
                                    {
                                        Name = "Timeline content",
                                        RelativeSizeAxes = Axes.Both,
                                        Padding = new MarginPadding { Horizontal = horizontal_margins, Vertical = vertical_margins },
                                        Children = new Drawable[]
                                        {
                                            new Container
                                            {
                                                RelativeSizeAxes = Axes.Both,
                                                Padding = new MarginPadding { Right = 115 },
                                                Child = timeline = new ScrollableTimeline { RelativeSizeAxes = Axes.Both }
                                            }
                                        }
                                    }
                                }
                            }
                        },
                        new Drawable[]
                        {
                            composerContainer = new Container
                            {
                                Name = "Composer content",
                                RelativeSizeAxes = Axes.Both,
                                Padding = new MarginPadding { Horizontal = horizontal_margins, Vertical = vertical_margins },
                            }
                        }
                    },
                    RowDimensions = new[] { new Dimension(GridSizeMode.Absolute, 110) }
                },
            };

            timeline.Beatmap.BindTo(Beatmap);

            var ruleset = Beatmap.Value.BeatmapInfo.Ruleset?.CreateInstance();
            if (ruleset == null)
            {
                Logger.Log("Beatmap doesn't have a ruleset assigned.");
                // ExitRequested?.Invoke();
                return;
            }

            var composer = ruleset.CreateHitObjectComposer(adjustableClock, framedClock);
            if (composer == null)
            {
                Logger.Log($"Ruleset {ruleset.Description} doesn't support hitobject composition.");
                // ExitRequested?.Invoke();
                return;
            }

            composerContainer.Child = composer;
        }
    }
}