python - 按下时更改 matplotlib 按钮颜色

Question

我正在使用 matplotlib 的 FuncAnimation 运行动画来显示来自微处理器的数据(实时)。我正在使用按钮向处理器发送命令，并希望按钮的颜色在单击后发生变化，但我在 matplotlib.widgets.button 文档中找不到任何内容(目前)实现了这一点。

class Command:

    def motor(self, event):
    SERIAL['Serial'].write(' ')
    plt.draw()

write = Command()
bmotor = Button(axmotor, 'Motor', color = '0.85', hovercolor = 'g')
bmotor.on_clicked(write.motor)            #Change Button Color Here

Answer 1

只需设置button.color。

例如

import matplotlib.pyplot as plt
from matplotlib.widgets import Button
import itertools


fig, ax = plt.subplots()
button = Button(ax, 'Click me!')

colors = itertools.cycle(['red', 'green', 'blue'])

def change_color(event):
    button.color = next(colors)
    # If you want the button's color to change as soon as it's clicked, you'll
    # need to set the hovercolor, as well, as the mouse is still over it
    button.hovercolor = button.color
    fig.canvas.draw()

button.on_clicked(change_color)

plt.show()