Avalonia/src/Avalonia.Visuals/Animation/RenderLoopClock.cs

using System;
using System.Collections.Generic;
using System.Text;
using Avalonia.Rendering;

namespace Avalonia.Animation
{
    public class RenderLoopClock : Clock, IRenderLoopTask
    {
        protected override void Stop()
        {
            AvaloniaLocator.Current.GetService<IRenderLoop>().Remove(this);
        }

        bool IRenderLoopTask.NeedsUpdate => HasSubscriptions;

        void IRenderLoopTask.Render()
        {
        }

        void IRenderLoopTask.Update(long tickCount)
        {
            Pulse(TimeSpan.FromMilliseconds(tickCount));
        }
    }
}