Override RoboFont keys

overrideRFKeys.py

import AppKit
from vanilla import *

myHotKeys = {'⌘s', '⇧⌘s', '⌘q', '⇧⌘q'}

MODIFIER_INT_TO_STR = {
				1048840: '⌘',
				262401: '⌃',
				524576: '⌥',
				131330: '⇧',
				1179914: '⇧⌘',
				1573160: '⌘⌥',
				1310985: '⌃⌘',
				393475: '⇧⌃',
				655650: '⇧⌥',
				}

class KeyEventMonitor(object):

	def __init__(self):
		self.monitor = None
		self.w = Window((300, 90), "KeyEventMonitor Debuggin window")
		self.w.b1 = Button((10, 10, -10, 20), "Stop",
							callback=self.stop)
		self.w.b2 = Button((10, 40, -10, 20), "Start",
							callback=self.start)
		self.w.bind("close", self.stop)
		self.w.open()
		self.start(None)

	def stop(self, sender):
		self._stopOverridingRFkeys()

	def start(self, sender):
		self._startOverridingRFkeys()

	def _startOverridingRFkeys(self):
		self._stopOverridingRFkeys()
		self.monitor = AppKit.NSEvent.addLocalMonitorForEventsMatchingMask_handler_(
			AppKit.NSKeyDownMask, self._keyDown)

	def _stopOverridingRFkeys(self):
		if self.monitor is not None:
			AppKit.NSEvent.removeMonitor_(self.monitor)
		self.monitor = None

	def _keyDown(self, event):
		rawKey = event.charactersIgnoringModifiers().lower()
		allKeys = MODIFIER_INT_TO_STR.get(event.modifierFlags(), '') + rawKey
		print(event.modifierFlags())
		if allKeys in myHotKeys:  # make sure only your sepcial extension window is active here
			print("hit %s" %allKeys)
			# do your things, this will override RF keys.
		else:
			self._stopOverridingRFkeys()
			AppKit.NSApp().sendEvent_(event)
			self._startOverridingRFkeys()

KeyEventMonitor()