☰

从命令行通知托盘中的进度

tag-icon • tag-icon kde opensuse kde5
从命令行通知托盘中的进度

OpenSuse 42.1 + KDE 5

我在脚本中使用 kdialog 来通知我进程的开始/结束

#!/bin/sh
while inotifywait -r -e modify -e create -e delete ~/www/gruz.org.uab/www/; do
    kdialog --passivepopup 'Started' --title 'UNISON update';
    unison   -ui text -auto -batch gruz.org.uab
    kdialog --passivepopup 'Finished' --title 'UNISON update';
done

但弹出窗口覆盖了一些显示区域，我想用系统托盘中的进度指示器替换它们，就像复制文件时一样。

http://static.xscreenshot.com/small/2016/08/04/13/screen_c0544580363c95b1458ba32ad0dcb741

我读到类似的东西qdbus org.kde.JobViewServer.requestView，但由于缺乏知识而未能实施。

您能否提供命令行示例（或其他等效项）

  • 执行一个过程
  • 托盘中的启动指示器
  • 完成时停止指示器

谢谢亲爱的大家

答案1

从 shell 脚本使用的问题qdbus org.kde.JobViewServer.requestView在于，它的设计目的是在发出请求的 D-Bus 客户端退出时删除通知，因此dbus-send和等工具qdbus将无法工作，因为它们在调用requestView.

如果您用来qdbusviewer创建请求，您可以尝试使用这样的调用，它会起作用，但我怀疑您是否会找到任何现成的东西，您可以从 shell 脚本调用它们来保持连接打开你。

# Assuming qdbusviewer got /JobViewServer/JobView_15 from the call...

qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setInfoMessage 'Frobnicating the foobles...'
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setDescriptionField 1 Cromulence fair
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setPercent 25
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setSpeed 200
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setTotalAmount 100000 bytes
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setProcessedAmount 200 bytes

qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.terminate 'Received Ctrl+C'

但是，如果您愿意使用一点 Python 而不是 shell 脚本，我可以提供一个示例做我可以保证，对于相同的任务，Python 是 shell 脚本的一个非常好的替代方案。

这是为了在不设置事件循环的情况下演示尽可能多的相关功能而编写的：

#!/usr/bin/env python

# This line opts into some Python 3.x features if you run Python 2.x
# and must go at the top of the file because it changes how the file is parsed.
# (Specifically, the Python 3.x print() syntax and sane division)
from __future__ import print_function, division

# These lines are analogous to `source` in a shell script
# The `import` statement searches `sys.path` for the requested packages
import fnmatch, os, subprocess, time

# I'm not sure what package you'll need on OpenSUSE, but this comes from
# python-dbus on Debian, *buntu, and Mint.
import dbus

# -- Get a handle for the D-Bus API to create a new Job --

session_bus = dbus.SessionBus()

# A simple little helper function to paper over some complexity
# See Also: https://dbus.freedesktop.org/doc/dbus-python/doc/tutorial.html
def get_dbus_interface(name, path, interface):
    obj = session_bus.get_object(name, path)
    return dbus.Interface(obj, dbus_interface=interface)

create_handle = get_dbus_interface(
    'org.kde.kuiserver', '/JobViewServer', 'org.kde.JobViewServer')

# -- Create a Job and get a handle to manipulate it --

# requestView takes (appName, appIconName, capabilities)
# https://lists.freedesktop.org/archives/xdg/2008-April/009410.html
# ...but according to the source code, capabilities never got hooked up, so
# the pause and stop buttons will always be there, whether or not you're
# listening for them. (And stop will always kill the popup.)
request_path = create_handle.requestView('MyTestApp', 'download', 0)
request_handle = get_dbus_interface(
    'org.kde.kuiserver', request_path, 'org.kde.JobViewV2')

# -- Set up a fake task for demonstration purposes --
files = os.listdir('/etc')  # NOTE: Check out os.walk() for recursive
file_count = len(files)
wait_per_file = 5.0 / file_count  # Add 2 seconds to the total runtime

# -- Configure the bits of the popup that won't change in our example --
request_handle.setInfoMessage('Echoing files in /etc')
request_handle.setTotalAmount(file_count, 'files')
request_handle.setSpeed(200 * 1024**4)  # 200 TiB/s

# -- Do our fake work --

# NOTE: In Python, indentation outside of () and [] is significant
try:
    for position, filename in enumerate(files):
        # Visible in the collapsed view
        request_handle.setPercent((position / file_count) * 100)
        request_handle.setDescriptionField(0, 'Source', filename)
        request_handle.setDescriptionField(1, 'Destination', filename)

        # These are for the expanded view
        request_handle.setProcessedAmount(position, 'files')

        # Here's some fake work so you can see how to call subprocesses
        subprocess.call(['echo', filename])
        time.sleep(wait_per_file)

    # Set the final state of the popup that will be left behind
    request_handle.setDescriptionField(0, "", "Completed successfully.")
    request_handle.clearDescriptionField(1)
    request_handle.terminate("All done")
except KeyboardInterrupt:
    print("Ctrl+C Pressed")
    request_handle.setDescriptionField(0, "Cancelled", "Ctrl+C Pressed")
    request_handle.clearDescriptionField(1)
    request_handle.terminate("Cancelled from outside")
finally:
    # This gets called no matter what
    print("Doing fake cleanup")

print("%s of the files were *.conf" % len(fnmatch.filter(files, '*.conf')))

答案2

我修改了你的 python 脚本，以便运行带有进度指示器的 bash 命令。您看不到进度，但可以查看某些内容是否仍在运行。

#!/usr/bin/env python
# This line opts into some Python 3.x features if you run Python 2.x
# and must go at the top of the file because it changes how the file is parsed.
# (Specifically, the Python 3.x print() syntax and sane division)
from __future__ import print_function, division

# These lines are analogous to `source` in a shell script
# The `import` statement searches `sys.path` for the requested packages
import subprocess, time

# I'm not sure what package you'll need on OpenSUSE, but this comes from
# python-dbus on Debian, *buntu, and Mint.
import dbus

# Get command line parameters
import sys

# Run bash script in background
import threading

# -- Get a handle for the D-Bus API to create a new Job --

session_bus = dbus.SessionBus()


# A simple little helper function to paper over some complexity
# See Also: https://dbus.freedesktop.org/doc/dbus-python/doc/tutorial.html
def get_dbus_interface(name, path, interface):
    obj = session_bus.get_object(name, path)
    return dbus.Interface(obj, dbus_interface=interface)


def run_bash_command(command):
    try:
        subprocess.call(command, shell=False)
    except Exception as e:
        print("Exception: ")
        print(e)


def main():
    create_handle = get_dbus_interface(
        'org.kde.kuiserver', '/JobViewServer', 'org.kde.JobViewServer')

    # -- Create a Job and get a handle to manipulate it --

    # requestView takes (appName, appIconName, capabilities)
    # https://lists.freedesktop.org/archives/xdg/2008-April/009410.html
    # ...but according to the source code, capabilities never got hooked up, so
    # the pause and stop buttons will always be there, whether or not you're
    # listening for them. (And stop will always kill the popup.)
    request_path = create_handle.requestView('bash', 'download', 0)
    request_handle = get_dbus_interface(
        'org.kde.kuiserver', request_path, 'org.kde.JobViewV2')

    # -- Configure the bits of the popup that won't change in our example --
    request_handle.setInfoMessage(sys.argv[1])

    # NOTE: In Python, indentation outside of () and [] is significant
    try:
        worker = threading.Thread(target=run_bash_command, args=[sys.argv[1:]])
        worker.start()
        #        for position, filename in enumerate(files):
        #            # Visible in the collapsed view
        request_handle.setPercent(0)
        request_handle.setDescriptionField(0, 'Command:', str(sys.argv[1]))
        request_handle.setDescriptionField(1, 'Arguments:', str(sys.argv[2:]))
        while worker.isAlive():
            time.sleep(1)

        # Set the final state of the popup that will be left behind
        request_handle.setDescriptionField(0, "", "Finished.")
#        request_handle.clearDescriptionField(1)
        request_handle.terminate("All done")
    except KeyboardInterrupt:
        request_handle.setDescriptionField(0, "Cancelled", "Ctrl+C Pressed")
        request_handle.clearDescriptionField(1)
        request_handle.terminate("Cancelled from outside")
    finally:
        # This gets called no matter what
        pass


main()

相关内容