def _get_window_list(self):
        """ Returns a dictionary of details about open windows """
        window_list = Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListExcludeDesktopElements, Quartz.kCGNullWindowID)
        return window_list

    ## Highlighting functions 

def getAllTitles():
    """Returns a list of strings of window titles for all visible windows.
    """

    # Source: https://stackoverflow.com/questions/53237278/obtain-list-of-all-window-titles-on-macos-from-a-python-script/53985082#53985082
    windows = Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListExcludeDesktopElements | Quartz.kCGWindowListOptionOnScreenOnly, Quartz.kCGNullWindowID)
    return ['%s %s' % (win[Quartz.kCGWindowOwnerName], win.get(Quartz.kCGWindowName, '')) for win in windows] 

def getActiveWindow():
    """Returns a Window object of the currently active Window."""

    # Source: https://stackoverflow.com/questions/5286274/front-most-window-using-cgwindowlistcopywindowinfo
    windows = Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListExcludeDesktopElements | Quartz.kCGWindowListOptionOnScreenOnly, Quartz.kCGNullWindowID)
    for win in windows:
        if win['kCGWindowLayer'] == 0:
            return '%s %s' % (win[Quartz.kCGWindowOwnerName], win.get(Quartz.kCGWindowName, '')) # Temporary. For now, we'll just return the title of the active window.
    raise Exception('Could not find an active window.') # Temporary hack. 

def getWindowsAt(x, y):
    windows = Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListExcludeDesktopElements | Quartz.kCGWindowListOptionOnScreenOnly, Quartz.kCGNullWindowID)
    matches = []
    for win in windows:
        w = win['kCGWindowBounds']
        if pygetwindow.pointInRect(x, y, w['X'], w['Y'], w['Width'], w['Height']):
            matches.append('%s %s' % (win[Quartz.kCGWindowOwnerName], win.get(Quartz.kCGWindowName, '')))
    return matches 

def getWindowGeometry(title):
    # TEMP - this is not a real api, I'm just using this name to stoe these notes for now.
    windows = Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListExcludeDesktopElements | Quartz.kCGWindowListOptionOnScreenOnly, Quartz.kCGNullWindowID)
    for win in windows:
        if title in '%s %s' % (win[Quartz.kCGWindowOwnerName], win.get(Quartz.kCGWindowName, '')):
            w = win['kCGWindowBounds']
            return (w['X'], w['Y'], w['Width'], w['Height']) 

def isVisible(title):
    # TEMP - this is not a real api, I'm just using this name to stoe these notes for now.
    windows = Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListExcludeDesktopElements | Quartz.kCGWindowListOptionOnScreenOnly, Quartz.kCGNullWindowID)
    for win in windows:
        if title in '%s %s' % (win[Quartz.kCGWindowOwnerName], win.get(Quartz.kCGWindowName, '')):
            return win['kCGWindowAlpha'] != 0.0 

def _is_main_window_open(self):
        """Main window, not login one"""
        windows = CGWindowListCopyWindowInfo(kCGWindowListExcludeDesktopElements, kCGNullWindowID)
        for window in windows:
            try:
                if 'Blizzard Battle.net' == window['kCGWindowName']:
                    log.debug('Main Battle.net window was found')
                    return True
            except KeyError:
                continue
        return False 

def get_screen_pixel(x, y):
    image = CG.CGWindowListCreateImage(
        CoreGraphics.CGRectMake(x, y, 2, 2),
        CG.kCGWindowListOptionOnScreenOnly,
        CG.kCGNullWindowID,
        CG.kCGWindowImageDefault)
    bytes = CG.CGDataProviderCopyData(CG.CGImageGetDataProvider(image))
    b, g, r, a = struct.unpack_from("BBBB", bytes, offset=0)
    return (r, g, b, a) 

def get_all_windows():
    global all_windows
    if not all_windows:
        all_windows = Quartz.CGWindowListCopyWindowInfo(Quartz.kCGWindowListExcludeDesktopElements, Quartz.kCGNullWindowID)
    for window in all_windows:
        if False and window.valueForKey_('kCGWindowIsOnscreen') :
            print(window)
    return all_windows 

def get_pixels(self, monitor):
        width, height = monitor[b'width'], monitor[b'height']
        left, top = monitor[b'left'], monitor[b'top']
        rect = Quartz.CGRect((left, top), (width, height))
        options = Quartz.kCGWindowListOptionOnScreenOnly
        winid = Quartz.kCGNullWindowID
        default = Quartz.kCGWindowImageDefault
        self.image = Quartz.CGWindowListCreateImage(rect, options, winid, default)
        if not self.image:
            raise ScreenshotError('MSS: CGWindowListCreateImage() failed.')
        return self.image