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129 lines
4.3 KiB
C#
129 lines
4.3 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 System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using OpenTK.Graphics;
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using osu.Framework.Allocation;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Game.Graphics.Containers;
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using osu.Game.Online.Chat;
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namespace osu.Game.Overlays.Chat
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{
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public class DrawableChannel : Container
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{
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private class ChatLineContainer : FillFlowContainer<ChatLine>
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{
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protected override int Compare(Drawable x, Drawable y)
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{
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var xC = (ChatLine)x;
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var yC = (ChatLine)y;
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return xC.Message.CompareTo(yC.Message);
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}
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}
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public readonly Channel Channel;
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private readonly ChatLineContainer flow;
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private readonly ScrollContainer scroll;
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public DrawableChannel(Channel channel)
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{
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Channel = channel;
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RelativeSizeAxes = Axes.Both;
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Children = new Drawable[]
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{
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scroll = new OsuScrollContainer
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{
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RelativeSizeAxes = Axes.Both,
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// Some chat lines have effects that slightly protrude to the bottom,
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// which we do not want to mask away, hence the padding.
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Padding = new MarginPadding { Bottom = 5 },
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Child = flow = new ChatLineContainer
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{
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Padding = new MarginPadding { Left = 20, Right = 20 },
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Direction = FillDirection.Vertical,
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},
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}
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};
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Channel.NewMessagesArrived += newMessagesArrived;
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Channel.MessageRemoved += messageRemoved;
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Channel.PendingMessageResolved += pendingMessageResolved;
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}
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[BackgroundDependencyLoader]
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private void load()
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{
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newMessagesArrived(Channel.Messages);
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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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scrollToEnd();
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}
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protected override void Dispose(bool isDisposing)
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{
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base.Dispose(isDisposing);
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Channel.NewMessagesArrived -= newMessagesArrived;
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Channel.MessageRemoved -= messageRemoved;
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Channel.PendingMessageResolved -= pendingMessageResolved;
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}
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private void newMessagesArrived(IEnumerable<Message> newMessages)
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{
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// Add up to last Channel.MAX_HISTORY messages
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var displayMessages = newMessages.Skip(Math.Max(0, newMessages.Count() - Channel.MAX_HISTORY));
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flow.AddRange(displayMessages.Select(m => new ChatLine(m)));
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if (!IsLoaded) return;
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if (scroll.IsScrolledToEnd(10) || !flow.Children.Any())
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scrollToEnd();
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var staleMessages = flow.Children.Where(c => c.LifetimeEnd == double.MaxValue).ToArray();
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int count = staleMessages.Length - Channel.MAX_HISTORY;
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for (int i = 0; i < count; i++)
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{
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var d = staleMessages[i];
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if (!scroll.IsScrolledToEnd(10))
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scroll.OffsetScrollPosition(-d.DrawHeight);
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d.Expire();
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}
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}
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private void pendingMessageResolved(Message existing, Message updated)
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{
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var found = flow.Children.LastOrDefault(c => c.Message == existing);
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if (found != null)
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{
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Trace.Assert(updated.Id.HasValue, "An updated message was returned with no ID.");
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flow.Remove(found);
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found.Message = updated;
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flow.Add(found);
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}
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}
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private void messageRemoved(Message removed)
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{
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flow.Children.FirstOrDefault(c => c.Message == removed)?.FadeColour(Color4.Red, 400).FadeOut(600).Expire();
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}
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private void scrollToEnd() => ScheduleAfterChildren(() => scroll.ScrollToEnd());
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}
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}
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