annotations/Azaion.Common/DTO/AnnotationThumbnail.cs

using System.ComponentModel;
using System.IO;
using System.Runtime.CompilerServices;
using System.Windows.Media.Imaging;
using Azaion.Common.Database;
using Azaion.Common.Extensions;

namespace Azaion.Common.DTO;

public class AnnotationThumbnail(Annotation annotation) : INotifyPropertyChanged
{
    public Annotation Annotation { get; set; } = annotation;

    private BitmapImage? _thumbnail;
    public BitmapImage? Thumbnail
    {
        get
        {
            if (_thumbnail == null)
                Task.Run(async () => Thumbnail = await Annotation.ThumbPath.OpenImage());
            return _thumbnail;
        }
        private set
        {
            _thumbnail = value;
            OnPropertyChanged();
        }
    }

    public string ImageName => Path.GetFileName(Annotation.ImagePath);
    public bool IsSeed => Annotation.AnnotationStatus == AnnotationStatus.Created;

    public event PropertyChangedEventHandler? PropertyChanged;
    protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}