Question

请注意：这是一个自我回答的问题，仅供参考。

使用Python如何显示通知：
a）超时并且
b）使超时明显倒计时。

Answer 1

更新：发布此消息仅两周后，我将结果更新为Mint 19（Ubuntu 18.04），下面所述的计时器功能在标准通知中消失了。我只能假设转移到GTK + 3实际上隐藏了计时器。它在那里但几乎看不见。
在控制中心->弹出通知中选择通知样式Nodoka或Coco确实可以正确显示计时器。
结束更新

使用notify2中的标准通知模块Notify和gi.repository，即使您无意使用它，也只需添加一个动作即可。
注意：我发现这似乎没有记录在案的原因。除了在通知中添加了关闭按钮外，它还提供了一个基于提供的超时时间而减少的表盘。
为notify2：

import notify2

class Notify():
    def mess_callback():
        pass

    def __init__(self,parent,caption,msg,timeout=None,urgency=None):
        if timeout != None: pass
        else: timeout = 0 # message should not timeout

        if urgency: pass
        else: urgency = 0

        img = '/home/rolf/MyApp.png'
        caps = notify2.get_server_caps()    
        mess = notify2.Notification(caption,msg,img) # passing an image is optional
        mess.set_timeout(timeout) #milliseconds
        mess.set_urgency(urgency) #0-Low, 1-Normal, 2-Critical
        # Without the following `add_action` option, No countdown to the time out is shown
        if timeout != 0 and 'actions' in caps:
            mess.add_action("close","Close",self.mess_callback,None) #Show the countdown to close
        mess.show()

if __name__ == "__main__":
    notify2.init("MyApp") #Register MyApp

    Notify(None,"Error","This message is not timed and has to be manually cancelled")
    Notify(None,"Error 2","This message will timeout after the default value",timeout=-1)
    Notify(None,"Information","An Unimportant message",timeout=20000,urgency=0)
    Notify(None,"Attention","An Important message",timeout=20000,urgency=1)
    Notify(None,"Emergency","A Critical message",timeout=20000,urgency=2)

    notify2.uninit() #Un-register

在Notify中使用gi.repository：

import gi
gi.require_version('Notify', '0.7')
from gi.repository import Notify

class Message():
    def mess_callback():
        pass

    def __init__(self,parent,caption,msg,timeout=None,urgency=None):
        if timeout != None: pass
        else: timeout = 0 # message should not timeout

        if urgency: pass
        else: urgency = 0

        img = '/home/rolf/MyApp.png'
        caps = Notify.get_server_caps()    
        mess = Notify.Notification.new(caption, msg, img) # passing an image is optional
        mess.set_timeout(timeout) #milliseconds
        mess.set_urgency(urgency) #0-Low, 1-Normal, 2-Critical
        # Without the following `add_action` option, No countdown to the time out is shown
        if timeout != 0 and 'actions' in caps:
            mess.add_action("close","Close",self.mess_callback,None) #Show the countdown to close
        mess.show()

if __name__ == "__main__":
    Notify.init("MyApp") #Register MyApp

    Message(None,"Error","This message is not timed and has to be manually cancelled")
    Message(None,"Error 2","This message will timeout after the default value",timeout=-1)
    Message(None,"Information","An Unimportant message",timeout=20000,urgency=0)
    Message(None,"Attention","An Important message",timeout=20000,urgency=1)
    Message(None,"Emergency","A Critical message",timeout=20000,urgency=2)

fail/error with 404

Python显示可见超时的通知

1 个答案: