/// <summary>
///
/// </summary>
/// <param name="options"></param>
/// <returns></returns>
public async Task <string> ConcatenateAsync(ImageOptions options)
{
var fileName = options.ConcatenatedImageFileNameScheme.Invoke(this);
var filePath = Path.Combine(options.ConcatenatedImageDirectory, fileName);
var filePhysicalPath = Path.Combine(options.RootDirectory, filePath).Replace('/', Path.DirectorySeparatorChar);
Path.GetDirectoryName(filePhysicalPath).CreateDirectory();
if (!File.Exists(filePhysicalPath))
{
var fileAbsolutePaths = ImagePaths
.Where(_ => !_.IsNullOrWhiteSpace())
.Select(_ => _.PreProcess(options.RootDirectory))
.ToList();
var fileImage = (await ImageHelper.FromFileOrNetworkAsync(fileAbsolutePaths[0]))?.Resize(Width, Height);
foreach (var path in fileAbsolutePaths.Skip(1))
{
using var image = await ImageHelper.FromFileOrNetworkAsync(path);
if (image == null)
{
continue;
}
fileImage = fileImage.Concatenate(image.Resize(Width, Height));
}
using (fileImage)
fileImage.CompressSave(filePhysicalPath, options.CompressFlag, ImageFormat.Jpeg);
}
return(filePath);
}
private void ImagePaths_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (ImagePaths.Count(i => !string.IsNullOrEmpty(i)) > 0)
{
if (ImagePaths.Count(i => !string.IsNullOrEmpty(i)) > _photosBase64Dictionary.Count)
{
var fileProvider = DependencyService.Get <IFileSystemWork>();
foreach (
var newPhotoPath in ImagePaths.Where(path => _photosBase64Dictionary.All(b64 => b64.Key != path)))
{
if (!newPhotoPath.Contains("http://185.76.145.214/") && !string.IsNullOrEmpty(newPhotoPath))
{
var tempBase64Photo = Convert.ToBase64String(fileProvider.GetFile(newPhotoPath));
_photosBase64Dictionary.Add(newPhotoPath, tempBase64Photo);
PhotosBase64Dictionary.Add(tempBase64Photo);
}
else if (!string.IsNullOrEmpty(newPhotoPath))
{
_photosBase64Dictionary.Add(newPhotoPath, newPhotoPath);
PhotosBase64Dictionary.Add(newPhotoPath);
}
}
}
else if (ImagePaths.Count(i => !string.IsNullOrEmpty(i)) < _photosBase64Dictionary.Count)
{
var tempToRemove = _photosBase64Dictionary.Where(b64 => !ImagePaths.Contains(b64.Key))
.Select(b64 => b64.Key);
foreach (var itemToDelete in tempToRemove)
{
PhotosBase64Dictionary.Remove(_photosBase64Dictionary.First(i => i.Key == itemToDelete).Value);
_photosBase64Dictionary.Remove(itemToDelete);
}
}
}
else
{
_photosBase64Dictionary.Clear();
PhotosBase64Dictionary.Clear();
}
}