wabbajack/Wabbajack.App/ViewModels/SubViewModels/SlideViewModel.cs

using System.IO;
using System.Net.Http;
using System.Threading.Tasks;
using Avalonia.Media;
using Avalonia.Media.Imaging;
using Avalonia.Threading;
using ReactiveUI;
using ReactiveUI.Fody.Helpers;
using Wabbajack.DTOs.DownloadStates;

namespace Wabbajack.App.ViewModels.SubViewModels;

public class SlideViewModel : ViewModelBase
{
    public SlideViewModel()
    {
        Activator = new ViewModelActivator();
        Image = null;
    }

    [Reactive] public IMetaState MetaState { get; set; }

    [Reactive] public IImage? Image { get; set; }

    public bool Loading { get; set; }

    public async Task PreCache(HttpClient client)
    {
        Loading = true;
        var url = await client.GetByteArrayAsync(MetaState.ImageURL);
        var img = new Bitmap(new MemoryStream(url));

        await Dispatcher.UIThread.InvokeAsync(() => { Image = img; });

        Loading = false;
    }
}