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出于某种原因,以下代码可以正常工作,但如果计算机大约 10 分钟未使用(没有鼠标/键盘交互),则 ToolButton 文本将停止显示在面板上并且只是空白。奇怪的是,如果使用 PC 它将保持工作更长时间,任何想法为什么或什么可能导致这种不活动故障?

想想我的下一步可能是安装一个新的 Linux 虚拟机来测试代码,并排除我的安装没有尝试的想法。

还将尝试让代码从终端而不是 mate 桌面“添加到面板”或 mate-panel-test-applet 命令开始,因为我确信还有其他错误/警告没有通过打印语句打印由于是面板小程序。

#示例面板小程序输出文本:“/ = 6G”

我在用着:
Linux katerina 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Ubuntu 18.04.1 LTS
GTK 3.22.30
python sys.version = '3.6.6 (default, Sep 12 2018, 18:26:19) \n[GCC 8.0.1 20180414 (experimental) [trunk revision 259383]]
  • 知道控件的工作方式可以获取点击事件
  • 检查屏幕保护程序,电源管理选项
  • 尝试在 ToolButton 上强制重绘事件
  • 检查 ToolButton label.text 仍在更新
  • 检查了我的磁盘空闲代码仍在工作,所以知道调度程序工作
  • 检查更改磁盘空间文本 dd if=/dev/zero of=test bs=1024 count=1000000
  • 尝试设置 box.set_above_child(False)

    导入系统
    导入日志
    导入 logging.handlers
    导入操作系统
    进口舒蒂尔
    导入 gi
    
    gi.require_version('MatePanelApplet', '4.0')
    gi.require_version("Gtk", "3.0")
    
    从 gi.repository 导入 Gtk
    从 gi.repository 导入 Gdk
    从 gi.repository 导入 MatePanelApplet
    从日期时间导入日期时间
    从 apscheduler.scheduler.background 导入 BackgroundScheduler
    从 hurry.filesize 导入大小
    
    定义配置记录器():
        #创建一个新的记录器并作为脚本调用连接到系统日志
        my_logger = logging.getLogger("TestPythonApplet")
        my_logger.setLevel(logging.DEBUG)
        logging.getLogger('apscheduler').setLevel(logging.DEBUG)
        formatter = logging.Formatter('%(name)s[%(process)d]: %(levelname)s: %(message)s')
        handler = logging.handlers.SysLogHandler(address = '/dev/log')          
        handler.setFormatter(格式化程序)
        my_logger.addHandler(处理程序)
        返回 my_logger

<pre>

# create the applet. Basicly all your applet code for buttons, etc here
def applet_fill(applet):
    #todo: maybe create a applet class like dock_applet.py example
    my_logger.debug('Applet started')

    #NOTE: Click events not always registered when click using ToolButton
    #Think because it dont own its own X-window for preformance reasons as mostly decrotive
    #As such dont normaly have to handle x events
    #see: https://developer.gnome.org/gtkmm-tutorial/3.0/chapter-widgets-without-xwindows.html.en
    #So we wrap in an Gtk.EventBox()
    button = Gtk.ToolButton()

    box = Gtk.EventBox()    #Used to capture mouse events
    box.set_above_child(True)   #Fixes left clicks not being detected 100%

    box.add(button)
    box.connect("button_press_event", button_click, applet)
    applet.add(box)

    #    show_image = False



#    if show_image:
#        #Follow works for showing image 
#        theme = Gtk.IconTheme().get_default()
#        if theme.has_icon("mate"):      #Keep things simple and look for known icon installed
#            my_logger.debug('Mate icon found')
#
#            image = Gtk.Image()
#            #<class 'gi.repository.GdkPixbuf.Pixbuf
#            i = theme.load_icon("happy", 32, Gtk.IconLookupFlags.NO_SVG)     
#            s= image.new_from_pixbuf(i)    #<class 'gi.repository.Gtk.Image'> 
#            button.set_icon_widget(s)
#    else:   #Use text mode
#        button.set_label(get_disk_free())

<pre>
    button.set_label(get_disk_free())
    #Now finnished creating applet start disk
    scheduler.start()
    scheduler.add_job(set_disk_free, 'interval', args=[applet],  seconds=1, id='set_disk_free_id', replace_existing=True)    #Args to pass to function set_disk_free
    applet.show_all()
    return True
</pre>
        def set_disk_free(小程序):
        #TODO: 有没有办法applet.get_child_by_name("GtkToolButton") 类型函数
        #查找 toolButton 小部件并设置文本    
        for items in applet.get_children(): # 获取applet下的子对象列表
            #my_logger.debug(items.get_name()) # 应该是 'gi.repository.Gtk.EventBox'
            如果 items.get_name() == "GtkEventBox":
                对于 items.get_children() 中的项目:
                    if items.get_name() == "GtkToolButton": #找到主工具按钮
                        items.set_label(get_disk_free())  
                        items.queue_draw() #让我们出于某种原因尝试强制重绘小部件
                                            #if dont touch pc for 10 min can't see text in panel
                                            #但是下面的调试行显示文本仍然设置和更新
                        my_logger.debug('标签:\"' + items.get_label() + '\"')

def get_disk_free():
    usage_string = '/ = '+ size(shutil.disk_usage('/').free)
    my_logger.debug('Updateing:' +  str(datetime.now().strftime('%d-%m-%Y %H:%M:%S')) + usage_string )
    return usage_string

def button_click(widget, event, applet):
    if event.type == Gdk.EventType.BUTTON_PRESS and event.button == 1:
        my_logger.debug('Left Button clicked')
        my_logger.debug('Updating free space text')
        set_disk_free(applet)

    if event.type == Gdk.EventType.BUTTON_PRESS and event.button == 3:
        my_logger.debug('Right Button clicked')


def applet_factory(applet, iid, data):
# return False to tell mate we did not create a applet

    if iid != "TestPythonApplet":
       return False
    applet_fill(applet)
    return True

#Code starts here
my_logger = configure_logger()    
scheduler = BackgroundScheduler()

MatePanelApplet.Applet.factory_main("TestPythonAppletFactory", True,
                                    MatePanelApplet.Applet.__gtype__,
                                    applet_factory, None)
my_logger.debug('Exiting')
scheduler.shutdown()



<pre>
#
#To test:
##########
##Create File: org.mate.panel.applet.TestPythonApplet.service
#[D-BUS Service]
#Name=org.mate.panel.applet.TestPythonAppletFactory
#Exec=/usr/bin/env python3 /home/chiptoxic/Downloads/mate-panel-applet/test_python_applet/test_python_applet.py
#
##Create File: org.mate.panel.TestPythonApplet.mate-panel-applet
#[Applet Factory]
#Id=TestPythonAppletFactory
#InProcess=false
#Location=/home/chiptoxic/Downloads/mate-panel-applet/test_python_applet/test_python_applet.py
#Name=Test Applet Factory
#Description=A MATE Python Applet example factory
# 
#[TestPythonApplet]
#Name=Test Python Applet
#Description=A MATE Python Applet example
#Icon=happy
#MateComponentId=OAFIID:MATE_TestPythonApplet

#Simplified path to save space
#sudo ln -s org.mate.panel.TestPythonApplet.mate-panel-applet /usr/share/mate-panel/applets/org.mate.panel.TestPythonApplet.mate-panel-applet
#sudo ln -s org.mate.panel.applet.TestPythonApplet.service /usr/share/dbus-1/services/org.mate.panel.applet.TestPythonApplet.service
#chmod 755 org.mate.panel.TestPythonApplet.mate-panel-applet
#chmod 644 org.mate.panel.TestPythonApplet.service
#tail -f /var/log/syslog
# 
#Following will kill process id of applet (have as bash script binded to key for easy testing / reload
#kill $(ps -aux | grep python3 | grep test_python_applet.py | tr -s ' ' | cut -d ' ' -f 2)
#
################################################################################ 
</pre>
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