Queue the resource being edited for preview. Once the preview is ready, the receiver's receiver_func will be called. The receiver_func must take the following four arguments: String path, Texture preview, Texture thumbnail_preview, Variant userdata. userdata can be anything, and will be returned when receiver_func is called.
Note: If it was not possible to create the preview the receiver_func will still be called, but the preview will be null.
Queue the resource being edited for preview. Once the preview is ready, the receiver's receiver_func will be called. The receiver_func must take the following four arguments: String path, Texture preview, Texture thumbnail_preview, Variant userdata. userdata can be anything, and will be returned when receiver_func is called. Note: If it was not possible to create the preview the receiver_func will still be called, but the preview will be null.