private static BitmapSource GetThumbnail(string path, ThumbnailOptions option = ThumbnailOptions.ThumbnailOnly)
{
return(WindowsThumbnailProvider.GetThumbnail(
path,
Constant.ThumbnailSize,
Constant.ThumbnailSize,
option));
}
private static ImageResult LoadInternal(string path, bool loadFullImage = false)
{
ImageSource image;
ImageType type = ImageType.Error;
try
{
if (string.IsNullOrEmpty(path))
{
return(new ImageResult(ImageCache[Constant.ErrorIcon], ImageType.Error));
}
if (ImageCache.ContainsKey(path))
{
return(new ImageResult(ImageCache[path], ImageType.Cache));
}
if (path.StartsWith("data:", StringComparison.OrdinalIgnoreCase))
{
var imageSource = new BitmapImage(new Uri(path));
imageSource.Freeze();
return(new ImageResult(imageSource, ImageType.Data));
}
if (!Path.IsPathRooted(path))
{
path = Path.Combine(Constant.ProgramDirectory, "Images", Path.GetFileName(path));
}
if (Directory.Exists(path))
{
/* Directories can also have thumbnails instead of shell icons.
* Generating thumbnails for a bunch of folders while scrolling through
* results from Everything makes a big impact on performance and
* Flow.Launcher responsibility.
* - Solution: just load the icon
*/
type = ImageType.Folder;
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize,
Constant.ThumbnailSize, ThumbnailOptions.IconOnly);
}
else if (File.Exists(path))
{
var extension = Path.GetExtension(path).ToLower();
if (ImageExtensions.Contains(extension))
{
type = ImageType.ImageFile;
if (loadFullImage)
{
image = LoadFullImage(path);
}
else
{
/* Although the documentation for GetImage on MSDN indicates that
* if a thumbnail is available it will return one, this has proved to not
* be the case in many situations while testing.
* - Solution: explicitly pass the ThumbnailOnly flag
*/
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize,
Constant.ThumbnailSize, ThumbnailOptions.ThumbnailOnly);
}
}
else
{
type = ImageType.File;
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize,
Constant.ThumbnailSize, ThumbnailOptions.None);
}
}
else
{
image = ImageCache[Constant.ErrorIcon];
path = Constant.ErrorIcon;
}
if (type != ImageType.Error)
{
image.Freeze();
}
}
catch (System.Exception e)
{
Log.Exception($"|ImageLoader.Load|Failed to get thumbnail for {path}", e);
type = ImageType.Error;
image = ImageCache[Constant.ErrorIcon];
ImageCache[path] = image;
}
return(new ImageResult(image, type));
}