我希望为运行一组命令创建一个GUI小部件,如on/off开关。
例如,使用ap-hotspot start/stop打开和关闭wifi热点。
有人帮我..。
发布于 2014-04-27 19:42:23
您可以实践一种通用的方法来为设置、连接等创建切换脚本/功能。此外,您可能能够在不同的情况下重用大部分代码。然而,一个简单的“全在一体”的解决方案,适用于不同的情况,没有任何知识,或对编码的感觉,是很难给出。您取决于脚本必须切换的两种状态的性质、它们对应的命令以及您可以使用(或不使用)检查当前状态的方法。
尽管如此,考虑到您的切换热点示例,下面是三个准备使用安装程序的版本,从相对简单到更复杂。前两种是最“普遍”的,第三种仅用于统一。
切换脚本的一般“解剖”如下:
> check what is the current_status
> if current_status = A:
(switch icon to icon_b)
run command to change state to B
(check if toggle command was successful, if not > switch icon back)
> else:
(switch launcher icon to icon_a)
run command to change to change to A
(check if toggle command was successful, if not > switch icon back)备注:
上切换单个启动程序(桌面文件)
最简单的一个:通过桌面上的(固定)启动器进行切换。
使用说明:
图标:
从下面(右击>安全as)下载其中的一个图标,将其作为toggle_icon.png保存在您选择的位置。


剧本:
复制下面的文本,将其粘贴到一个空文件中,并将其保存为您选择的位置的hotspot.py。
#!/usr/bin/python3
import subprocess
# identifying string to look for when "pstree" is run
running_id = "ap-hotspot"
def check_ifrunning():
# check if hotspot is up or down
get_pstreeinfo = subprocess.Popen(["pstree"], stdout=subprocess.PIPE)
output = (get_pstreeinfo.communicate()[0].decode("utf-8"))
if running_id in output:
return "running"
else:
return "not_running"
def toggle_connection():
runcheck = check_ifrunning()
if runcheck == "not_running":
# command to start hotspot (spaces replaced by ",")
subprocess.Popen(["gksu", "ap-hotspot", "start"])
else:
# idem, stop hotspot
subprocess.Popen(["gksu", "ap-hotspot", "stop"])
toggle_connection()创建桌面文件:
复制下面的文本,粘贴到一个空的文本文件中。将正确的路径添加到Exec=行中的脚本中,在Icon=行中添加正确的路径,并将其作为hotspot_toggle.desktop安全地保存到桌面上。使其可执行,您的设置应该可以工作。
[Desktop Entry]
Name=Hotspot toggle
Comment=Hotspot toggle
Categories=Accessories
Exec=python3 /path/to/script/hotspot.py
Icon=/path/to/icon/toggle_icon.png
Terminal=false
Type=Application
StartupNotify=true这是第一个示例的增强版本:图标将更改为桌面上的toggle_officon.png / toggle_onicon.png,这取决于hotspot是否打开或关闭。
使用说明:
图标:
从第一个示例下载两个图标,将它们作为
toggle_officon.png (the grey one)
toggle_onicon.png (the green one) 在你选择的地方。
剧本:
复制下面的文本,将其粘贴到一个空文件中,并将其保存为您选择的位置的hotspot.py。将正确的路径添加到以path_todtfile = (桌面文件的路径,请参阅下文)、icon_offpath = (到toggle_officon.png的路径)和icon_onpath = (到toggle_onicon.png的路径)开头的行。注意:桌面文件的“真实”名称是保存它时的命名方式。您在接口中看到的名称在桌面文件的Name=行中定义。
#!/usr/bin/python3
import subprocess
import time
wait = 10
# identifying difference on pstree command on / off
running_id = "ap-hotspot"
# pathto_desktop file
path_todtfile = "/path/to/desktop_file/toggle.desktop"
# paths to icons
icon_offpath = "/path/to/toggle_off_icon/toggle_officon.png"
icon_onpath = "/path/to/toggle_on_icon/toggle_onicon.png"
def set_icon(set_mode, state):
if state == "running":
iconset = [icon_onpath, icon_offpath]
else:
iconset = [icon_offpath, icon_onpath]
if set_mode == "set_current":
appropriate_iconpath = iconset[0]
else:
appropriate_iconpath = iconset[1]
with open(path_todtfile, "r") as editicon:
editicon = editicon.readlines()
line_toedit = [editicon.index(line) for line in editicon if\
line.startswith("Icon=")][0]
if not editicon[line_toedit] == "Icon="+appropriate_iconpath+"\n":
editicon[line_toedit] = "Icon="+appropriate_iconpath+"\n"
with open(path_todtfile, "wt") as edited_icon:
for line in editicon:
edited_icon.write(line)
else:
pass
def check_ifrunning():
# check if hotspot is up or down
get_pstreeinfo = subprocess.Popen(["pstree"], stdout=subprocess.PIPE)
output = (get_pstreeinfo.communicate()[0].decode("utf-8"))
if running_id in output:
return "running"
else:
return "not_running"
def toggle_connection():
runcheck = check_ifrunning()
set_icon("set_alter", runcheck)
if runcheck == "not_running":
subprocess.call(["gksu", "ap-hotspot", "start"])
else:
subprocess.call(["gksu", "ap-hotspot", "stop"])
time.sleep(wait)
runcheck = check_ifrunning()
set_icon("set_current", runcheck)
toggle_connection()桌面文件:
创建类似于示例1的桌面文件。将正确的路径添加到Exec=行的脚本中,将路径添加到Icon=中的两个图标之一(在第一次使用时将被纠正),并将其作为toggle.desktop安全地保存到桌面上。使其可执行,您的设置应该可以工作。
倒/跑


(此示例不应用于12.04或更早版本。)
图标:
从第一个示例下载两个图标,将它们作为
toggle_officon.png (the grey one)
toggle_onicon.png (the green one) 在你选择的地方。
剧本:
复制下面的文本。将其粘贴到一个空文件中,将其保存为hotspot.py,位于适合您的位置。
#!/usr/bin/python3
import subprocess
import getpass
import time
# time to wait, to check if hotspot was established (set correct icon)
wait = 10
# identifying difference on pstree command
running_id = "ap-hotspot"
# location of the launcher restore script
backup_copy = "/home/"+getpass.getuser()+"/.restore_currentlauncher.sh"
# name of the desktop file if hotspot is down
mention_ifdown = 'application://hotspot_off.desktop'
# name of the desktop file if hotspot is running
mention_ifup = 'application://hotspot_on.desktop'
def check_ifrunning():
# check if hotspot is up or down
get_pstreeinfo = subprocess.Popen(["pstree"], stdout=subprocess.PIPE)
output = (get_pstreeinfo.communicate()[0].decode("utf-8"))
if running_id in output:
return "running"
else:
return "not_running"
def read_currentlauncher():
# read the current launcher contents
get_launcheritems = subprocess.Popen([
"gsettings", "get", "com.canonical.Unity.Launcher", "favorites"
], stdout=subprocess.PIPE)
return eval((get_launcheritems.communicate()[0].decode("utf-8")))
def set_current_launcher(current_launcher):
# before editing the launcher, create restore script
backup_data = read_currentlauncher()
with open(backup_copy, "wt") as create_backup:
create_backup.write(
"#!/bin/sh\n\n"\
"gsettings set com.canonical.Unity.Launcher favorites "+\
'"'+str(backup_data)+'"'
)
# preparing subprocess command string
current_launcher = str(current_launcher).replace(", ", ",")
subprocess.Popen([
"gsettings", "set", "com.canonical.Unity.Launcher", "favorites",
current_launcher,
])
def set_icon(change_mode):
# defines the appropriate icon in the launcher
state = check_ifrunning()
if state == "running":
if change_mode == "set_current":
iconset = [mention_ifup, mention_ifdown]
else:
iconset = [mention_ifdown, mention_ifup]
elif state == "not_running":
if change_mode == "set_current":
iconset = [mention_ifdown, mention_ifup]
else:
iconset = [mention_ifup, mention_ifdown]
# set the defined icon
current_launcher = read_currentlauncher()
if iconset[0] in current_launcher:
pass
else:
index = current_launcher.index(iconset[1])
current_launcher.pop(index)
set_current_launcher(current_launcher)
time.sleep(1)
current_launcher.insert(index, iconset[0])
set_current_launcher(current_launcher)
def toggle_connection():
set_icon("set_alter")
runcheck = check_ifrunning()
if runcheck == "not_running":
subprocess.call(["gksu", "ap-hotspot", "start"])
else:
subprocess.call(["gksu", "ap-hotspot", "stop"])
time.sleep(wait)
set_icon("set_current")
toggle_connection()两个桌面文件,将在启动程序中切换:
以下是您需要的两个桌面文件。打开一个空文本文件,粘贴下面的代码(在单独的文件中),将路径替换为指向上面所保存的图标(S)的实际路径,以及脚本的路径,并将它们保存在~/.local/share/applications中,作为hotspot_off.desktop和hotspot_on.desktop:
hotspot_off.desktop:
[Desktop Entry]
Name=Hotspot off
Exec=python3 /path/to/script/hotspot.py
Icon=/path/to/toggle_officon/toggle_officon.png
Terminal=false
Type=Application
NoDisplay=truehotspot_on.desktop:
[Desktop Entry]
Name=Hotspot on
Exec=python3 /path/to/script/hotspot.py
Icon=/path/to/toggle_officon/toggle_onicon.png
Terminal=false
Type=Application
NoDisplay=true最后,将其中一个桌面文件拖到启动程序上。不要担心,如果你选择了正确的或没有,它会得到纠正在第一次运行。
https://askubuntu.com/questions/455201
复制相似问题