public static Texture from_file (File file) throws Error
Creates a new texture by loading an image from a file.
The file format is detected automatically. The supported formats are PNG and JPEG, though more formats might be available.
If null is returned, then throws will be set.
This function is threadsafe, so that you can e.g. use GTask and run_in_thread to avoid blocking the main thread while loading a big image.
`GFile` to load
A newly-created `GdkTexture`