Source code for seamm.tk_join_node

# -*- coding: utf-8 -*-

"""A node to join the flow in a flowchart"""

import logging
import seamm

logger = logging.getLogger(__name__)




class TkJoin(seamm.TkNode):
    """The Tk-based graphical representation of a joining node"""

    anchor_points = {
        "n": (0, -0.5),
        "s": (0, 0.5),
        "e": (0.5, 0.0),
        "w": (-0.5, 0.0),
    }

    def __init__(
        self, tk_flowchart=None, node=None, canvas=None, x=120, y=20, w=30, h=30
    ):
        """Initialize a node

        Keyword arguments:
        """
        super().__init__(
            tk_flowchart=tk_flowchart, node=node, canvas=canvas, x=x, y=y, w=w, h=h
        )



    def draw(self):
        """Draw the node on the given canvas, making it visible"""
        # Remove any graphics items
        # self.undraw()

        # the outline
        x0 = self.x - self.w / 2
        x1 = x0 + self.w
        y0 = self.y - self.h / 2
        y1 = y0 + self.h
        self.border = self.canvas.create_oval(
            x0,
            y0,
            x1,
            y1,
            tags=[self.tag, "type=outline"],
            fill="white",
        )

        for direction, edge in self.connections():
            edge.move()




    def right_click(self, event):
        """
        Handles the right click event on the node.

        Parameters
        ----------
        event : Tk Event

        Returns
        -------
        None

        See Also
        --------
        TkGaussian.edit
        """

        super().right_click(event)
        self.popup_menu.tk_popup(event.x_root, event.y_root, 0)