Python GUI, Tkinter

import tkinter as tk from typing import Union from constants import TEXT_FONT class AbstractGrid(tk.Canvas): """ Support for creation of and annotation on grids. """ def __init__( self, master: Union[tk.Tk, tk.Frame], dimensions: tuple[int, int], size: tuple[int, int], **kwargs ) -> None: """ Constructor for AbstractGrid. Parameters: master: The master frame for this Canvas. dimensions: (#rows, #columns) size: (width in pixels, height in pixels) """ super().__init__( master, width=size[0] + 1, height=size[1] + 1, highlightthickness=0, **kwargs ) self._size = size self.set_dimensions(dimensions) def set_dimensions(self, dimensions: tuple[int, int]) -> None: """ Sets the dimensions of the grid. Parameters: dimensions: (#rows, #columns) """ self._dimensions = dimensions def get_cell_size(self) -> tuple[int, int]: """ Returns the size of the cells (width, height) in pixels. """ rows, cols = self._dimensions width, height = self._size return width // cols, height // rows def get_bbox(self, position: tuple[int, int]) -> tuple[int, int, int, int]: """ Returns the bounding box of the given (row, col) position. Parameters: position: The (row, col) cell position. Returns: Bounding box for this position as (x_min, y_min, x_max, y_max). """ row, col = position cell_width, cell_height = self.get_cell_size() x_min, y_min = col * cell_width, row * cell_height x_max, y_max = x_min + cell_width, y_min + cell_height return x_min, y_min, x_max, y_max def get_midpoint(self, position: tuple[int, int]) -> tuple[int, int]: """ Gets the graphics coordinates for the center of the cell at the given (row, col) position. Parameters: position: The (row, col) cell position. Returns: The x, y pixel position of the center of the cell. """ row, col = position cell_width, cell_height = self.get_cell_size() x_pos = col * cell_width + cell_width // 2 y_pos = row * cell_height + cell_height // 2 return x_pos, y_pos def annotate_position(self, position: tuple[int, int], text: str) -> None: """ Annotates the cell at the given (row, col) position with the provided text. Parameters: position: The (row, col) cell position. text: The text to draw. """ self.create_text(self.get_midpoint(position), text=text, font=TEXT_FONT) def clear(self): """ Clears all child widgets off the canvas. """ self.delete("all")