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#!python2
#
# SUMMARY: Outputs the [application name] of the topmost window at mouse screen position or nothing if none
# USAGE: <script> <x-screen-coordinate> <y-screen-coordinate>
#
# REQUIRES: macOS window system and the python2 and the PyObjC libraries available here: https://pythonhosted.org/pyobjc/install.html
#
# AUTHOR: Bob Weiner <rsw@gnu.org>
# ORIG-DATE: 14-Oct-17 at 16:21:53
#
# Copyright (C) 2017 Free Software Foundation, Inc.
# See the "HY-COPY" file for license information.
#
# DESCRIPTION:
# DESCRIP-END.
import Quartz
from sys import argv, exit
if len(argv) < 3:
print "%s: ERROR - Call with 2 numeric arguments, X and Y representing an absolute screen position" % argv[0]
exit(1)
x = int(argv[1]); y = int(argv[2])
# Return the first window that x,y falls within since the windows are listed in z-order (top of stack to bottom)
def filter_and_print_top_window(x, y):
win_x = win_y = win_width = win_height = 0
for v in Quartz.CGWindowListCopyWindowInfo( Quartz.kCGWindowListOptionOnScreenOnly | Quartz.kCGWindowListExcludeDesktopElements, Quartz.kCGNullWindowID ):
val = v.valueForKey_
bounds_val = val('kCGWindowBounds').valueForKey_
# If item has a non-zero WindowLayer, it is not an app and is probably system-level, so skip it.
if not val('kCGWindowIsOnscreen') or val('kCGWindowLayer'):
continue
win_x = int(bounds_val('X')); win_y = int(bounds_val('Y'))
win_width = int(bounds_val('Width')); win_height = int(bounds_val('Height'))
if win_x <= x and x < win_x + win_width and win_y <= y and y < win_y + win_height:
print ('[' + ((val('kCGWindowOwnerName') or '') + ']')).encode('utf8')
# Add this line back in if you need to see the specific window within the app at the given position.
# + ('' if val('kCGWindowName') is None else (' ' + val('kCGWindowName') or '')) \
break
# Filter to just the topmost window at (x,y) screen coordinates and print the bracketed [window name], if any.
filter_and_print_top_window(x, y)
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