public async Task ShowAsync()
{
this.Visibility = Visibility.Visible;
CurrentlyAccessedFolder = ImageNavigationHelper.ContainingFolder;
CurrentlyDisplayedImageItem = ImageNavigationHelper.SelectedImage;
ImageData = CurrentlyAccessedFolder.GetRawImageItems();
CurrentIndexInImageData = ImageData.IndexOf(CurrentlyDisplayedImageItem);
UpdateArrowsVisibility();
await CurrentlyDisplayedImageItem.ToImageAsync();
}
private async Task UpdateImageToIndex(int index, CancellationToken ct = new CancellationToken())
{
if (ct.IsCancellationRequested)
{
return;
}
var oldImage = CurrentlyDisplayedImageItem;
CurrentlyDisplayedImageItem = ImageData[CurrentIndexInImageData];
if (ct.IsCancellationRequested)
{
return;
}
await CurrentlyDisplayedImageItem?.ToImageAsync(ct);
await oldImage?.ToThumbnailAsync();
}
