Created
March 2, 2018 07:09
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Monitors current window under focus and suspends Unity when it is not in focus in order to save battery life
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| #!/usr/bin/ python | |
| ''' This script automatically finds PIDs for Unity | |
| and suspend those processes whenever Unity is not in focus. | |
| This script is meant to stay running and polls window focus every 1 second | |
| Written March 1st, 2018 by Omikun, compiled from StackOverflow answers: | |
| Identify window under focus: | |
| https://superuser.com/questions/734007/how-do-i-tell-which-app-stole-my-focus-in-os-x | |
| Get PID by process name | |
| https://stackoverflow.com/questions/26688936/how-to-get-pid-by-process-name-in-python | |
| ''' | |
| from datetime import datetime | |
| from time import sleep | |
| import sys | |
| import subprocess | |
| def get_pid(name): | |
| result = subprocess.check_output(['pgrep Unity'], shell=True) | |
| return result.strip().split('\n') | |
| # if script invoked with an argument, use that as the pid | |
| if len(sys.argv) > 1: | |
| pids = [sys.argv[1]] | |
| else: # otherwise go find all pids associated with Unity | |
| pids = get_pid('Unity') | |
| print "monitoring Unity, with PIDs:", pids, | |
| try: | |
| from AppKit import NSWorkspace | |
| except ImportError: | |
| print "Can't import AppKit -- maybe you're running python from brew?" | |
| print "Try running with Apple's /usr/bin/python instead." | |
| exit(1) | |
| last_active_app = None | |
| stop = True | |
| while True: | |
| active_app = NSWorkspace.sharedWorkspace().activeApplication() | |
| if last_active_app != active_app['NSApplicationName']: | |
| last_active_app = active_app['NSApplicationName'] | |
| print "currently focused on", last_active_app | |
| if last_active_app == 'Unity': | |
| print "continuing Unity" | |
| stop = True | |
| for pid in pids: | |
| print subprocess.Popen("kill -CONT " + pid, shell=True) | |
| elif stop: | |
| stop = False | |
| print "stopping unity" | |
| for pid in pids: | |
| print subprocess.Popen("kill -STOP " + pid, shell=True) | |
| sleep(1) |
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Updated script in repo