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PySimpleGUI切换布局后窗口无法恢复原尺寸问题求助

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AI 小北
2026-8-19
问题描述

我开发了一款通过菜单选择切换不同布局的PySimpleGUI程序，当切换至Log By Grep（Dashboard风格）布局后再切回其他常规布局时，窗口无法像另外两个布局一样恢复原始尺寸。

以下是相关代码：

import _thread
import PySimpleGUI as sg
import paramiko
import math
# pylint: disable=C0103 ,W0612, C0301, R1722

client = paramiko.SSHClient()

def ssh_connect(HOSTNAME,key_num):
    print(HOSTNAME)
    '''Connect to SDR with mobaxterm SSH connection'''
    hostname = HOSTNAME
    username = "air"
    password = "d1password1"
    port = 22
    # add to known hosts
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        window[f'-LOG-{key_num}'].update("Trying to Connect..." + '\n', append=True)
        client.connect(hostname=hostname, username=username, password=password, port=port)
        print(f"Connected to SSH - IP :  {hostname}  Nashville")
        window[f'-LOG-{key_num}'].update(f"Connected to SSH - IP :  {hostname}" + '\n', append=True)
    except ValueError as error:
        print("[!] Cannot connect to the SSH Server")
        window[f'-LOG-{key_num}'].update("[!] Cannot connect to the SSH Server" + '\n', append=True)
        exit()

def system_time():
    '''Takes the system time from mobaxterm SSH connection'''
    stdinn, start, stderrr = client.exec_command("date '+%Y-%m-%d %H:%M:%S,%3N'")
    sys_time = start.read().decode()
    return sys_time

def App_loger():
    '''Data collection proccess'''
    global stop                 # New statement
    start_time = system_time()
    accumulated_detections = 0
    while not stop:  # New statement
        stop_time = system_time()
        stdin, grep, stderr = client.exec_command(f"cat /var/log/enforce-air/enforce-air.log |"
                                                  " grep -E 'DL: Chain: 11, Task: Detect.*F: '|"
                                                  f"awk -v 'start={start_time}' -v end='{stop_time}' "
                                                  "'/^[[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2} ""/"" {inrange = $0 >= start && $0 <= end } inrange' |"
                                                  "awk -F '|' '{print $7}' |awk -F ',' '{print $8 ',' $12}'")
        x = grep.read().decode()
        x = x.split('\n')
        if len(x) > 1:
            for line in x:
                window['-LOG-1'].update(line + '\n', append=True)

        accumulated_detections = accumulated_detections + len(x) - 1
        window['-NUM_OF_DETECTIONS-1'].update(str(accumulated_detections))
        # window.refresh()
        start_time = stop_time

def log_finder_grep(cus_grep):
    '''Data collection proccess'''
    global stop_4                # New statement
    custom_grep = cus_grep
    start_time = system_time()
    accumulated_detections = 0
    while not stop_4:  # New statement
        stop_time = system_time()
        stdin, grep, stderr = client.exec_command(f"cat /var/log/enforce-air/enforce-air.log |"
                                                  f" grep -E '{custom_grep}'|"
                                                  f"awk -v 'start={start_time}' -v end='{stop_time}' "
                                                  "'/^[[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2} ""/"" {inrange = $0 >= start && $0 <= end } inrange'")
        y = grep.read().decode()
        y = y.split('\n')
        if len(y) > 1:
            for line in y:
                window['-LOG-4'].update(line + '\n', append=True)

        accumulated_detections = accumulated_detections + len(y) - 1
        window['-NUM_OF_DETECTIONS-1'].update(str(accumulated_detections))
        # window.refresh()
        start_time = stop_time


theme_dict = {'BACKGROUND': '#2B475D',
                'TEXT': '#FFFFFF',
                'INPUT': '#F2EFE8',
                'TEXT_INPUT': '#000000',
                'SCROLL': '#F2EFE8',
                'BUTTON': ('#000000', '#C2D4D8'),
                'PROGRESS': ('#FFFFFF', '#C7D5E0'),
                'BORDER': 1,'SLIDER_DEPTH': 0, 'PROGRESS_DEPTH': 0}
sg.LOOK_AND_FEEL_TABLE['Dashboard'] = theme_dict
sg.theme('Dashboard')
BORDER_COLOR = '#C7D5E0'
DARK_HEADER_COLOR = '#1B2838'
BPAD_TOP = ((20,20), (20, 10))
BPAD_LEFT = ((20,10), (0, 10))
BPAD_LEFT_INSIDE = ((0, 10),(0, 10))
BPAD_RIGHT = ((10,20), (10, 20))

menu_def = [['Apps', ['SSH Logger', 'FSPL Calculator', 'Log By Grep', 'Exit APP', ]],
            ['Edit', ['Paste', ['Special', 'Normal', ], 'Undo'], ],
            ['Help', 'About...'], ]

top_banner = [[sg.Text('Enter HostName'), sg.InputText(size=(15, 1), key='HOSTNAME_4'),
                 sg.Button('Connect to SSH', key='Connect to SSH 4', size=(15, 1))],
              [sg.Text('Enter Grep'), sg.InputText(size=(100, 10), key='custom_grep')]]

block_3 = [ [sg.Button('Drone_Detect',key='drone_detect_button', size=(29, 1))],
            [sg.Button('RC_Detect',key='rc_detect_button', size=(29, 1))],
            [sg.Button('1',key='1', size=(29, 1))],
            [sg.Button('2',key='2', size=(29, 1))],
            [sg.Button('3',key='3', size=(29, 1))],
            [sg.Button('4',key='4', size=(29, 1))],
            [sg.Button('5',key='5', size=(29, 1))],
            [sg.Button('6',key='6', size=(29, 1))],
           [sg.Button('Go'), sg.Button('Exit')]]

block_2 = [[sg.Button('Run', key='Run_4'), sg.Button('Stop', key='Stop_4'),sg.Button('Exit', key='Exit_4', button_color=('white', 'red'))],
           [sg.Text('accumulated_detections'), sg.Multiline(size=(8, 1), key='-NUM_OF_DETECTIONS-1', do_not_clear=True, autoscroll=True, auto_refresh=True, write_only=False, disabled=True)]]

block_4 = [[sg.Multiline(size=(116, 33), key='-LOG-4', do_not_clear=True, autoscroll=True, auto_refresh=True, write_only=False, disabled=True)]]

FSPL_Calculator_layout = [[sg.Text('Enter Freq[Ghz]   '), sg.InputText(key='-DIST-', size=(8, 1)), sg.Text('Result[dBm]:'),
                           sg.Multiline(size=(8, 1), key='result', do_not_clear=True, autoscroll=True, auto_refresh=True, write_only=False, disabled=True)],
                          [sg.Text('Enter Distance[m]'), sg.InputText(key='-FREQ-', size=(8, 1))],
                          [sg.Button('Calculate', size=(10, 1)), sg.Button('Exit', key='Exit_3 ', size=(10, 1))]]

Parser_log_yariv = [[sg.Text('Enter HostName'), sg.InputText(size=(15, 1), key='HOSTNAME_1'),
             sg.Button('Connect to SSH', key='Connect to SSH 1', size=(15, 1))],
            [sg.Multiline(size=(50, 20), key='-LOG-1', do_not_clear=True, autoscroll=True, auto_refresh=True,
                          write_only=False, disabled=True)],
            [sg.Text('accumulated_detections'),
             sg.Multiline(size=(8, 1), key='-NUM_OF_DETECTIONS-1', do_not_clear=True, autoscroll=True,
                          auto_refresh=True, write_only=False, disabled=True),
             sg.Button('Run', key='Run_1'), sg.Button('Stop', key='Stop_1'),
             sg.Button('Exit', key='Exit_1', button_color=('white', 'red'))]]

Open_image_layout = [[sg.Image('image.png', size=(400, 400))]]



layout = [[[sg.Column(FSPL_Calculator_layout, key='FSPL_Calc', visible=False),
           sg.Column(Open_image_layout, key='Open_image', visible=True),sg.Column(Parser_log_yariv, key='Parser_log_yariv', visible=False),
           sg.Column(top_banner, size=(1120, 70), pad=(20, 0), background_color=DARK_HEADER_COLOR, key='log_by_grep_1', visible=False)],
           [sg.Column([[sg.Column(block_2, size=(250, 80), pad=BPAD_LEFT_INSIDE, key='log_by_grep_2', visible=False)],
                      [sg.Column(block_3, size=(250, 450), pad=BPAD_LEFT_INSIDE)]], pad=BPAD_LEFT,
                     background_color=BORDER_COLOR, key='log_by_grep_3', visible=False),
           sg.Column(block_4, size=(850, 550), pad=BPAD_RIGHT, key='log_by_grep_4', visible=False)]],
          [sg.Menu(menu_def)]]
window = sg.Window('Dashboard PySimpleGUI-Style', layout, margins=(0,0), background_color=BORDER_COLOR, no_titlebar=True, grab_anywhere=True)

stop = False
while True:             # Event Loop
    event, values = window.read()
    if event == 'SSH Logger':
        window['log_by_grep_1'].update(visible=False)
        window['log_by_grep_2'].update(visible=False)
        window['log_by_grep_3'].update(visible=False)
        window['log_by_grep_4'].update(visible=False)
        window['FSPL_Calc'].update(visible=False)
        window['Parser_log_yariv'].update(visible=True)
        window['Open_image'].update(visible=False)
    if event == "Connect to SSH 1":
        ssh_connect(values['HOSTNAME_1'],'1')
    if event == "Run_1":
        stop = False  # New statement
        window['Run_1'].update(button_color=('black', 'yellow'))
        _thread.start_new_thread(App_loger, ())  # New statement
    if event == "Stop_1":
        stop = True  # New statement
    if event == "Exit_1" or event == sg.WIN_CLOSED:
        window.Close()  # New statement
        break
########################################################################################################################
    if event == 'FSPL Calculator':
        window['log_by_grep_1'].update(visible=False)
        window['log_by_grep_2'].update(visible=False)
        window['log_by_grep_3'].update(visible=False)
        window['log_by_grep_4'].update(visible=False)
        window['FSPL_Calc'].update(visible=True)
        window['Parser_log_yariv'].update(visible=False)
        window['Open_image'].update(visible=False)
    if event == "Calculate":
        freq = values['-FREQ-']
        dist = values['-DIST-']
        print(values['-FREQ-'])
        FSPL = 20 * math.log(float(freq) * 1000000000, 10) + 20 * math.log(float(dist), 10) - 147.55
        FSPL = round(FSPL, 2)
        window['result'].update(str(FSPL))
    if event == "Exit_3 " or event == sg.WIN_CLOSED:
        window.Close()  # New statement
        break
########################################################################################################################
    if event == 'Log By Grep':
        window['log_by_grep_1'].update(visible=True)
        window['log_by_grep_2'].update(visible=True)
        window['log_by_grep_3'].update(visible=True)
        window['log_by_grep_4'].update(visible=True)
        window['FSPL_Calc'].update(visible=False)
        window['Parser_log_yariv'].update(visible=False)
        window['Open_image'].update(visible=False)
        print(layout)
    if event == "Connect to SSH 4":
        ssh_connect(values['HOSTNAME_4'],'4')
    if event == "drone_detect_button":
        stop_4 = False  # New statement
        values['custom_grep'] = 'drone_detect'
        args = (values['custom_grep'])
        _thread.start_new_thread(log_finder_grep, (args,))
    if event == "Run_4":
        stop_4 = False  # New statement
        window['Run_4'].update(button_color=('black', 'yellow'))
        args = (values['custom_grep'])
        _thread.start_new_thread(log_finder_grep, (args, ))  # New statement
    if event == "Stop_4":
        stop_4 = True
    if event == "Exit_4" or event == sg.WIN_CLOSED:
        window.Close()
        break
    if event == "Exit APP" or event == sg.WIN_CLOSED:
        window.Close()  # New statement
        break
        
    if event == sg.WIN_CLOSED or event == 'Exit':
        break
window.close()
解决方案

问题根源

Log By Grep布局中大量使用了固定尺寸的Column控件（比如size=(1120,70)、size=(850,550)），这些固定尺寸会强制窗口拉伸到对应大小；而其他布局的控件没有设置这么大的固定尺寸，切换时PySimpleGUI不会自动收缩窗口到适配新布局的最小尺寸。

修改步骤

  1. 移除固定尺寸限制：删除Log By Grep相关所有Column的size参数，让PySimpleGUI自动根据控件内容计算布局尺寸。
    示例修改后的布局定义：

    layout = [[[sg.Column(FSPL_Calculator_layout, key='FSPL_Calc', visible=False),
           sg.Column(Open_image_layout, key='Open_image', visible=True),
           sg.Column(Parser_log_yariv, key='Parser_log_yariv', visible=False),
           sg.Column(top_banner, pad=(20, 0), background_color=DARK_HEADER_COLOR, key='log_by_grep_1', visible=False)],
           [sg.Column([[sg.Column(block_2, pad=BPAD_LEFT_INSIDE, key='log_by_grep_2', visible=False)],
                      [sg.Column(block_3, pad=BPAD_LEFT_INSIDE)]], pad=BPAD_LEFT,
                     background_color=BORDER_COLOR, key='log_by_grep_3', visible=False),
           sg.Column(block_4, pad=BPAD_RIGHT, key='log_by_grep_4', visible=False)]],
          [sg.Menu(menu_def)]]

  2. 切换布局后强制适配尺寸：在每个布局切换的代码块末尾，添加window.set_size((None, None))，让窗口自动调整到当前可见布局的最小适配尺寸。
    示例（以切换到SSH Logger布局为例）：

    if event == 'SSH Logger':
    window['log_by_grep_1'].update(visible=False)
    window['log_by_grep_2'].update(visible=False)
    window['log_by_grep_3'].update(visible=False)
    window['log_by_grep_4'].update(visible=False)
    window['FSPL_Calc'].update(visible=False)
    window['Parser_log_yariv'].update(visible=True)
    window['Open_image'].update(visible=False)
    window.set_size((None, None))  # 添加此行，自动调整窗口尺寸

    需为SSH Logger、FSPL Calculator、Log By Grep三个布局切换事件都添加这行代码。

  3. 优化线程变量初始化：在代码开头添加stop_4 = False，避免切换到Log By Grep布局时出现未定义变量的错误。

内容的提问来源于stack exchange，提问作者skyline

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最近更新时间：2026.08.19 23:35:32