from krita import DockWidgetFactory, DockWidgetFactoryBase from .page_slicer_docker import PageSlicer DOCKER_ID = 'page_slicer' instance = Krita.instance() dock_widget_factory = DockWidgetFactory(DOCKER_ID, DockWidgetFactoryBase.DockRight, PageSlicer) instance.addDockWidgetFactory(dock_widget_factory)