python – 用于突出显示当前屏幕的脚本highlight_focus不起作用
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我想从以下讨论安装此脚本,这允许我突出显示当前屏幕.
我使用linux mint和Cinnamon桌面,我按照说明安装wmctrl,将脚本保存为highlight_focus,使用python3注销并执行脚本.
我收到的输出如下：
no second screen seems to be connected
Traceback (most recent call last):
File "/home/fabrizio/Documents/Linux Scripts/highlight_focus.py", line 50, in <module>
left_scr = screendata[1][0][0]; right_scr = screendata[1][1]
TypeError: 'NoneType' object is not subscriptable
我有三个屏幕,两个显示器(一个是HDMI和另一个DVI)和原始的笔记本电脑屏幕,它被停用.
此外,这是脚本中触发错误的代码：
def get_onscreen():
# get the size of the desktop, the names of both screens and the x-resolution of the left screen
resdata = subprocess.check_output(["xrandr"]).decode("utf-8")
if resdata.count(" connected") == 2:
resdata = resdata.splitlines()
r = resdata[0].split(); span = int(r[r.index("current")+1])
screens = [l for l in resdata if " connected" in l]
lr = [[(l.split()[0], int([s.split("x")[0] for s in l.split() if "+0+0" in s][0])) for l in screens if "+0+0" in l][0],
[l.split()[0] for l in screens if not "+0+0" in l][0]]
return [span, lr]
else:
print("no second screen seems to be connected")
该脚本由Ask Ubuntu上的Jacob Vlijm创建.
我的系统：
Distributor ID: LinuxMint
Description: Linux Mint 18 Sarah
Release: 18
Codename: sarah
Linux fabrizio-Lenovo-G50-70 4.6.0-040600-generic #201606100558 SMP Fri Jun 10 10:01:15 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
这是xrand的输出：
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
eDP1 connected (normal left inverted right x axis y axis)
1366x768 60.00 +
1360x768 59.80 59.96
1280x720 60.00
1024x768 60.00
1024x576 60.00
960x540 60.00
800x600 60.32 56.25
864x486 60.00
640x480 59.94
720x405 60.00
680x384 60.00
640x360 60.00
DP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.00*+
1680x1050 59.95
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.89
1280x800 59.81
1152x864 75.00
1280x720 60.00
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 59.94
720x400 70.08
HDMI1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.00*+ 50.00 59.94
1680x1050 59.88
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.90
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
解决方法:
我改变了原来的剧本.它现在检查是否有超过1个监视器(不完全是2).我还改变了有源监视器检测逻辑.它仍然不适用于超过2个显示器,但应该适合你.
#!/usr/bin/env python3
"""
In a side-by-side dual monitor setup (left-right), the script below will give
a short dim- flash on the newly focussed screen if the focussed screen changes
"""
import subprocess
import time
def get_wposition():
# get the position of the currently frontmost window
try:
w_data = subprocess.check_output(["wmctrl", "-lG"]).decode("utf-8").splitlines()
frontmost = subprocess.check_output(["xprop", "-root", "_NET_ACTIVE_WINDOW"]).decode("utf-8").split()[-1].strip()
z = 10-len(frontmost); frontmost = frontmost[:2]+z*"0"+frontmost[2:]
return [int(l.split()[2]) for l in w_data if frontmost in l][0]
except subprocess.CalledProcessError:
pass
def get_onscreen():
# get the size of the desktop, the names of both screens and the x-resolution of the left screen
resdata = subprocess.check_output(["xrandr"]).decode("utf-8")
if resdata.count(" connected") >= 2:
resdata = resdata.splitlines()
r = resdata[0].split(); span = int(r[r.index("current")+1])
screens = [l for l in resdata if " connected" in l]
lr = [[(l.split()[0], int([s.split("x")[0] for s in l.split() if "+0+0" in s][0])) for l in screens if "+0+0" in l][0],
[l.split()[0] for l in screens if not "+0+0" in l and "+0" in l][0]]
return [span, lr]
else:
print("no second screen seems to be connected")
def scr_position(span, limit, pos):
# determine if the frontmost window is on the left- or right screen
if limit < pos < span:
return [right_scr, left_scr]
else:
return [left_scr, right_scr]
def highlight(scr1):
# highlight the "active" window, dim the other one
subprocess.Popen([ "xrandr", "--output", scr1, "--brightness", "0.3"])
time.sleep(0.1)
subprocess.Popen([ "xrandr", "--output", scr1, "--brightness", "1.0"])
# determine the screen setup
screendata = get_onscreen()
left_scr = screendata[1][0][0]; right_scr = screendata[1][1]
print(left_scr, right_scr)
limit = screendata[1][0][1]; span = screendata[0]
# set initial highlight
oncurrent1 = []
while True:
time.sleep(0.5)
pos = get_wposition()
# bypass possible incidental failures of the wmctrl command
if pos != None:
oncurrent2 = scr_position(span, limit, pos)
# only set highlight if there is a change in active window
if oncurrent2 != oncurrent1:
highlight(oncurrent2[0])
oncurrent1 = oncurrent2
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