PySimpleGui 如何在 canvas 中绘制情节而不单独出现 window

Question

问题：我的绘图出现在 window 内的 canvas 上，但也会使用该绘图创建一个单独的 window 图形。我想删除那个额外的 window，因为它似乎正在占用资源和时间，并且可能使系统偶尔停止响应。

将不胜感激，这是我的代码示例，可重现该问题。

代码示例：

import matplotlib.pyplot as plt
from os import path
import matplotlib
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
matplotlib.use("TkAgg")
import pickle
from numpy import arange
import PySimpleGUI as sg

def draw_figure_w_toolbar(canvas, fig, canvas_toolbar):
    if canvas.children:
        for child in canvas.winfo_children():
            child.destroy()
    if canvas_toolbar.children:
        for child in canvas_toolbar.winfo_children():
            child.destroy()
    figure_canvas_agg = FigureCanvasTkAgg(fig, master=canvas)
    figure_canvas_agg.draw()
    toolbar = Toolbar(figure_canvas_agg, canvas_toolbar)
    toolbar.update()
    figure_canvas_agg.get_tk_widget().pack(side='right', fill='both', expand=1)


class Toolbar(NavigationToolbar2Tk):
    def __init__(self, *args, **kwargs):
        super(Toolbar, self).__init__(*args, **kwargs)

data_folder = ''
filename = 'plot_data.p'
[t0,p0, t_filt, p_filt, band,t,p] = pickle.load(open(path.join(data_folder, path.basename(filename)),'rb'))

plot_column = [
    [
        sg.Button(enable_events=True, key="Plot",button_text="Plot")],
    [sg.T('Controls:')],
    [sg.Canvas(key='controls_cv')],
    [sg.T('Figure:')],
    [sg.Column(
        layout=[
            [sg.Canvas(key='canvas',
                       # it's important that you set this size
                       size=(400 * 2, 600)
                       )]
        ],
        background_color='#DAE0E6',
        pad=(0, 0)
    )],]
layout_Main_window = [
    [
        sg.Column(plot_column),
    ]
]

window = sg.Window("Click detection", layout_Main_window, finalize=True, location=(30, 80))
        
while True:
    event, values = window.read()
    if event == "Exit" or event == sg.WIN_CLOSED:
        break
        
        # --------- Data folder ---------
    elif event == "Plot":
        fig = plt.figure(figsize=(11, 10))
        plt.subplot(2,1,1)
        plt.title('Original signals')
        plt.plot(t0, p0,'.', label='Original signal', zorder = 0)
        plt.plot(t_filt, p_filt, label='filtered ['+str(band[0])+','+str(band[1])+']', zorder = 5)
        plt.legend(loc='best')
        plt.ylabel('Intensity')
        x_axis1 = [round(min(min(t0),min(t_filt)),1), round(max(max(t0),max(t_filt)),1)]
        plt.gca().set_xlim(x_axis1)
        plt.grid()
        
        plt.subplot(2,1,2)
        plt.title('Pen + equipment signal')
        plt.plot(t, p, color='#ff7f0e', label='clicking period')
        plt.legend(loc='best')
        plt.ylabel('relative intensity')
        plt.gca().set_xlim(x_axis1)
        plt.xticks(arange(x_axis1[0], x_axis1[1], 0.5))
        plt.xlabel('time (s)')
        plt.grid()
        plot_name = path.join(data_folder, path.basename(filename.replace('.p', '.png')))
        plt.savefig(data_folder)
        
        draw_figure_w_toolbar(window['canvas'].TKCanvas, fig, window['controls_cv'].TKCanvas)

Answer 1

fig = plt.figure(figsize=(11, 10))

应改为：

plt.ioff()
plt.figure(figsize=(11, 10))
fig = plt.gcf()

PySimpleGui 如何在 canvas 中绘制情节而不单独出现 window

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