napari_track_edit.application_menus.tracking_from_scratch_widget
================================================================

.. py:module:: napari_track_edit.application_menus.tracking_from_scratch_widget


Classes
-------

.. autoapisummary::

   napari_track_edit.application_menus.tracking_from_scratch_widget.TrackingFromScratch


Module Contents
---------------

.. py:class:: TrackingFromScratch(viewer: napari.Viewer)

   Bases: :py:obj:`qtpy.QtWidgets.QWidget`


   Widget to create an empty tracking tree (with either point or label tracks), to
   track from scratch. The tree starts out without any nodes; nodes are added by
   manually annotating in the track layers.


   .. py:attribute:: viewer


   .. py:attribute:: tracks_viewer


   .. py:attribute:: size_layer_dropdown


   .. py:attribute:: start_points_btn


   .. py:attribute:: start_labels_btn


   .. py:method:: _update_buttons(*args) -> None

      Enable the start buttons only when a size layer is selected.



   .. py:method:: _start_tracking(mode: str) -> None

      Create a new empty tree with empty TrackPoints/TrackGraph layers (and a
      TrackLabels layer for ``mode == 'labels'``). The array size is taken from the
      selected Image/Labels layer.

      :param mode: "points" to track with points, "labels" to track with a
                   segmentation.
      :type mode: str