内容：
- 总览
- 脚本源
- 补充说明
1.概述
正如评论中提到的那样，此功能从12.04开始已被删除，现在单击启动器图标可将窗口最小化（这是我在在线搜索中看到的要求很高的功能）。但是，有一个键盘可以打开一个窗口的EXPO，这是Super+ Ctrl+ W。知道这一点，如果我们可以检测到窗口升起时在启动器上的单击或光标的位置，那么我们可以通过该键盘快捷键来模拟单个窗口博览会。下面的脚本正是这样做的。
该/usr/bin/single_click_expo.py文件应另存为文件并添加到启动应用程序中
2.脚本源
也可以在GitHub上使用
#!/usr/bin/env python3
# Author: Serg Kolo
# Date: Sept 28, 2016
# Purpose: activates
# Depends: python3-gi
# xdotool
# Written for: http://askubuntu.com/q/651188/295286
# just in case user runs this with python 2
from __future__ import print_function
import gi
gi.require_version('Gdk', '3.0')
from gi.repository import Gdk,Gio
import sys
import dbus
import subprocess
def run_cmd(cmdlist):
""" Reusable function for running shell commands"""
try:
stdout = subprocess.check_output(cmdlist)
except subprocess.CalledProcessError:
print(">>> subprocess:",cmdlist)
sys.exit(1)
else:
if stdout:
return stdout
def gsettings_get(schema,path,key):
"""Get value of gsettings schema"""
if path is None:
gsettings = Gio.Settings.new(schema)
else:
gsettings = Gio.Settings.new_with_path(schema,path)
return gsettings.get_value(key)
def get_launcher_object(screen):
# Unity allows launcher to be on multiple
# monitors, so we need to account for all
# window objects of the launcher
launchers = []
for window in screen.get_window_stack():
xid = window.get_xid()
command = ['xprop','-notype',
'WM_NAME','-id',str(xid)
]
xprop = run_cmd(command).decode()
title = xprop.replace("WM_NAME =","")
if title.strip() == '"unity-launcher"':
launchers.append(window)
#return window
return launchers
def get_dbus(bus_type,obj,path,interface,method,arg):
# Reusable function for accessing dbus
# This basically works the same as
# dbus-send or qdbus. Just give it
# all the info, and it will spit out output
if bus_type == "session":
bus = dbus.SessionBus()
if bus_type == "system":
bus = dbus.SystemBus()
proxy = bus.get_object(obj,path)
method = proxy.get_dbus_method(method,interface)
if arg:
return method(arg)
else:
return method()
def main():
previous_xid = int()
screen = Gdk.Screen.get_default()
while True:
current_xid = screen.get_active_window().get_xid()
if int(current_xid) == previous_xid:
continue
previous_xid = int(current_xid)
icon_size = gsettings_get(
'org.compiz.unityshell',
'/org/compiz/profiles/unity/plugins/unityshell/',
'icon-size')
icon_size = int(str(icon_size))
position = str(gsettings_get(
'com.canonical.Unity.Launcher',
None,
'launcher-position'))
screen = Gdk.Screen.get_default()
launcher_objs = get_launcher_object(screen)
# for faster processing,figure out which launcher is used
# first before running xdotool command. We also need
# to account for different launcher positions (available since 16.04)
pointer_on_launcher = None
for launcher in launcher_objs:
if 'Left' in position and \
abs(launcher.get_pointer().x) <= icon_size:
pointer_on_launcher = True
elif 'Bottom' in position and \
abs(launcher.get_pointer().y) <= icon_size:
pointer_on_launcher = True
else:
continue
active_xid = int(screen.get_active_window().get_xid())
application = get_dbus('session',
'org.ayatana.bamf',
'/org/ayatana/bamf/matcher',
'org.ayatana.bamf.matcher',
'ApplicationForXid',
active_xid)
# Apparently desktop window returns empty application
# we need to account for that as well
if application:
xids = list(get_dbus('session',
'org.ayatana.bamf',
application,
'org.ayatana.bamf.application',
'Xids',None))
if pointer_on_launcher and\
len(xids) == 1:
run_cmd(['xdotool','key','Ctrl+Super+W'])
if __name__ == '__main__':
main()
3.附加说明
- 这可能是最好的捷径重新映射到其他的东西Super+ Ctrl+ W，因为在世博Ctrl+ W世博对应于“关闭窗口”命令。这里的潜在问题是频繁切换可能会导致窗口关闭。脚本也必须相应地进行调整。
注意：
该脚本依赖xdotool实用程序。您必须已安装它。没有xdotool它就行不通，因为xdotool它用于模拟按键。通过安装sudo apt-get install xdotool
