如何在 python 中的 tkinter 上创建网格? [英] How to create a grid on tkinter in python?

问题描述

我设法创建了一个具有给定半径、起点和多个点的函数.它将创建一个大圆圈，并使用这个圆圈创建 4 个小圆圈.我想在背景上添加一个网格，该网格将从左上角开始每隔 100 个像素显示 TKinter 中的 Y 轴和 X 轴.坐标原点应该是左上角.例如，如果屏幕是 300x300，那么窗口将在其 X 轴上有 3 条线(在 100、200 和 300)，从左到右，从上到下.作为坐标系的网格.

I managed to create a function that with a given radius, starting point and a number of points. It will create a big circle and withing this circle it will create 4 small circles. I want to add a grid on the background that will show the Y and X axis in TKinter every 100 pixels apart starting from the top left. The coordinate origin should be the top left corner. For example if the screen is 300x300 then the window will have 3 lines (at 100, 200 and 300) on his X axis going from left to right and top up to bottom. A grid as a coordinate system.

我如何创建法线的示例.我使用包含 2 个点起点和终点的线类:

Example of how I create a normal line. I use a line class which contains 2 points start point and end point:

rootWindow = Tkinter.Tk()
rootFrame = Tkinter.Frame(rootWindow, width=1000, height=800, bg="white")
rootFrame.pack()
canvas = Tkinter.Canvas(rootFrame, width=1000, height=800, bg="white")
canvas.pack() 
def draw_line(l):
    "Draw a line with its two end points"
    draw_point(l.p1)
    draw_point(l.p2)
    # now draw the line segment
    x1 = l.p1.x
    y1 = l.p1.y
    x2 = l.p2.x
    y2 = l.p2.y
    id = canvas.create_line(x1, y1, x2, y2, width=2, fill="blue")
    return id

推荐答案

这将在画布上为您创建一个网格

This will create a grid on the canvas for you

import tkinter as tk

def create_grid(event=None):
    w = c.winfo_width() # Get current width of canvas
    h = c.winfo_height() # Get current height of canvas
    c.delete('grid_line') # Will only remove the grid_line

    # Creates all vertical lines at intevals of 100
    for i in range(0, w, 100):
        c.create_line([(i, 0), (i, h)], tag='grid_line')

    # Creates all horizontal lines at intevals of 100
    for i in range(0, h, 100):
        c.create_line([(0, i), (w, i)], tag='grid_line')

root = tk.Tk()

c = tk.Canvas(root, height=1000, width=1000, bg='white')
c.pack(fill=tk.BOTH, expand=True)

c.bind('<Configure>', create_grid)

root.mainloop()

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