442 lines
18 KiB
Python
442 lines
18 KiB
Python
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import ctypes
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import ctypes.util
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import Quartz
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import time
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import os
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import threading
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from AppKit import NSEvent
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from ._keyboard_event import KeyboardEvent, KEY_DOWN, KEY_UP
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from ._canonical_names import normalize_name
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try: # Python 2/3 compatibility
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unichr
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except NameError:
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unichr = chr
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Carbon = ctypes.cdll.LoadLibrary(ctypes.util.find_library('Carbon'))
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class KeyMap(object):
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non_layout_keys = dict((vk, normalize_name(name)) for vk, name in {
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# Layout specific keys from https://stackoverflow.com/a/16125341/252218
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# Unfortunately no source for layout-independent keys was found.
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0x24: 'return',
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0x30: 'tab',
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0x31: 'space',
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0x33: 'delete',
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0x35: 'escape',
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0x37: 'command',
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0x38: 'shift',
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0x39: 'capslock',
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0x3a: 'option',
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0x3b: 'control',
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0x3c: 'right shift',
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0x3d: 'right option',
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0x3e: 'right control',
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0x3f: 'function',
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0x40: 'f17',
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0x48: 'volume up',
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0x49: 'volume down',
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0x4a: 'mute',
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0x4f: 'f18',
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0x50: 'f19',
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0x5a: 'f20',
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0x60: 'f5',
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0x61: 'f6',
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0x62: 'f7',
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0x63: 'f3',
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0x64: 'f8',
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0x65: 'f9',
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0x67: 'f11',
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0x69: 'f13',
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0x6a: 'f16',
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0x6b: 'f14',
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0x6d: 'f10',
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0x6f: 'f12',
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0x71: 'f15',
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0x72: 'help',
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0x73: 'home',
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0x74: 'page up',
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0x75: 'forward delete',
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0x76: 'f4',
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0x77: 'end',
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0x78: 'f2',
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0x79: 'page down',
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0x7a: 'f1',
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0x7b: 'left',
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0x7c: 'right',
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0x7d: 'down',
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0x7e: 'up',
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}.items())
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layout_specific_keys = {}
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def __init__(self):
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# Virtual key codes are usually the same for any given key, unless you have a different
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# keyboard layout. The only way I've found to determine the layout relies on (supposedly
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# deprecated) Carbon APIs. If there's a more modern way to do this, please update this
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# section.
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# Set up data types and exported values:
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CFTypeRef = ctypes.c_void_p
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CFDataRef = ctypes.c_void_p
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CFIndex = ctypes.c_uint64
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OptionBits = ctypes.c_uint32
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UniCharCount = ctypes.c_uint8
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UniChar = ctypes.c_uint16
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UniChar4 = UniChar * 4
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class CFRange(ctypes.Structure):
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_fields_ = [('loc', CFIndex),
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('len', CFIndex)]
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kTISPropertyUnicodeKeyLayoutData = ctypes.c_void_p.in_dll(Carbon, 'kTISPropertyUnicodeKeyLayoutData')
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shiftKey = 0x0200
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alphaKey = 0x0400
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optionKey = 0x0800
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controlKey = 0x1000
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kUCKeyActionDisplay = 3
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kUCKeyTranslateNoDeadKeysBit = 0
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# Set up function calls:
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Carbon.CFDataGetBytes.argtypes = [CFDataRef] #, CFRange, UInt8
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Carbon.CFDataGetBytes.restype = None
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Carbon.CFDataGetLength.argtypes = [CFDataRef]
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Carbon.CFDataGetLength.restype = CFIndex
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Carbon.CFRelease.argtypes = [CFTypeRef]
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Carbon.CFRelease.restype = None
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Carbon.LMGetKbdType.argtypes = []
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Carbon.LMGetKbdType.restype = ctypes.c_uint32
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Carbon.TISCopyCurrentKeyboardInputSource.argtypes = []
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Carbon.TISCopyCurrentKeyboardInputSource.restype = ctypes.c_void_p
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Carbon.TISCopyCurrentASCIICapableKeyboardLayoutInputSource.argtypes = []
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Carbon.TISCopyCurrentASCIICapableKeyboardLayoutInputSource.restype = ctypes.c_void_p
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Carbon.TISGetInputSourceProperty.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
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Carbon.TISGetInputSourceProperty.restype = ctypes.c_void_p
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Carbon.UCKeyTranslate.argtypes = [ctypes.c_void_p,
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ctypes.c_uint16,
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ctypes.c_uint16,
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ctypes.c_uint32,
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ctypes.c_uint32,
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OptionBits, # keyTranslateOptions
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ctypes.POINTER(ctypes.c_uint32), # deadKeyState
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UniCharCount, # maxStringLength
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ctypes.POINTER(UniCharCount), # actualStringLength
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UniChar4]
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Carbon.UCKeyTranslate.restype = ctypes.c_uint32
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# Get keyboard layout
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klis = Carbon.TISCopyCurrentKeyboardInputSource()
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k_layout = Carbon.TISGetInputSourceProperty(klis, kTISPropertyUnicodeKeyLayoutData)
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if k_layout is None:
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klis = Carbon.TISCopyCurrentASCIICapableKeyboardLayoutInputSource()
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k_layout = Carbon.TISGetInputSourceProperty(klis, kTISPropertyUnicodeKeyLayoutData)
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k_layout_size = Carbon.CFDataGetLength(k_layout)
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k_layout_buffer = ctypes.create_string_buffer(k_layout_size) # TODO - Verify this works instead of initializing with empty string
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Carbon.CFDataGetBytes(k_layout, CFRange(0, k_layout_size), ctypes.byref(k_layout_buffer))
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# Generate character representations of key codes
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for key_code in range(0, 128):
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# TODO - Possibly add alt modifier to key map
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non_shifted_char = UniChar4()
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shifted_char = UniChar4()
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keys_down = ctypes.c_uint32()
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char_count = UniCharCount()
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retval = Carbon.UCKeyTranslate(k_layout_buffer,
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key_code,
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kUCKeyActionDisplay,
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0, # No modifier
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Carbon.LMGetKbdType(),
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kUCKeyTranslateNoDeadKeysBit,
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ctypes.byref(keys_down),
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4,
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ctypes.byref(char_count),
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non_shifted_char)
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non_shifted_key = u''.join(unichr(non_shifted_char[i]) for i in range(char_count.value))
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retval = Carbon.UCKeyTranslate(k_layout_buffer,
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key_code,
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kUCKeyActionDisplay,
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shiftKey >> 8, # Shift
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Carbon.LMGetKbdType(),
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kUCKeyTranslateNoDeadKeysBit,
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ctypes.byref(keys_down),
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4,
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ctypes.byref(char_count),
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shifted_char)
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shifted_key = u''.join(unichr(shifted_char[i]) for i in range(char_count.value))
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self.layout_specific_keys[key_code] = (non_shifted_key, shifted_key)
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# Cleanup
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Carbon.CFRelease(klis)
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def character_to_vk(self, character):
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""" Returns a tuple of (scan_code, modifiers) where ``scan_code`` is a numeric scan code
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and ``modifiers`` is an array of string modifier names (like 'shift') """
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for vk in self.non_layout_keys:
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if self.non_layout_keys[vk] == character.lower():
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return (vk, [])
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for vk in self.layout_specific_keys:
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if self.layout_specific_keys[vk][0] == character:
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return (vk, [])
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elif self.layout_specific_keys[vk][1] == character:
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return (vk, ['shift'])
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raise ValueError("Unrecognized character: {}".format(character))
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def vk_to_character(self, vk, modifiers=[]):
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""" Returns a character corresponding to the specified scan code (with given
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modifiers applied) """
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if vk in self.non_layout_keys:
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# Not a character
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return self.non_layout_keys[vk]
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elif vk in self.layout_specific_keys:
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if 'shift' in modifiers:
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return self.layout_specific_keys[vk][1]
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return self.layout_specific_keys[vk][0]
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else:
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# Invalid vk
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raise ValueError("Invalid scan code: {}".format(vk))
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class KeyController(object):
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def __init__(self):
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self.key_map = KeyMap()
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self.current_modifiers = {
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"shift": False,
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"caps": False,
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"alt": False,
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"ctrl": False,
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"cmd": False,
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}
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self.media_keys = {
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'KEYTYPE_SOUND_UP': 0,
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'KEYTYPE_SOUND_DOWN': 1,
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'KEYTYPE_BRIGHTNESS_UP': 2,
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'KEYTYPE_BRIGHTNESS_DOWN': 3,
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'KEYTYPE_CAPS_LOCK': 4,
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'KEYTYPE_HELP': 5,
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'POWER_KEY': 6,
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'KEYTYPE_MUTE': 7,
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'UP_ARROW_KEY': 8,
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'DOWN_ARROW_KEY': 9,
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'KEYTYPE_NUM_LOCK': 10,
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'KEYTYPE_CONTRAST_UP': 11,
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'KEYTYPE_CONTRAST_DOWN': 12,
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'KEYTYPE_LAUNCH_PANEL': 13,
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'KEYTYPE_EJECT': 14,
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'KEYTYPE_VIDMIRROR': 15,
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'KEYTYPE_PLAY': 16,
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'KEYTYPE_NEXT': 17,
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'KEYTYPE_PREVIOUS': 18,
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'KEYTYPE_FAST': 19,
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'KEYTYPE_REWIND': 20,
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'KEYTYPE_ILLUMINATION_UP': 21,
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'KEYTYPE_ILLUMINATION_DOWN': 22,
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'KEYTYPE_ILLUMINATION_TOGGLE': 23
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}
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def press(self, key_code):
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""" Sends a 'down' event for the specified scan code """
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if key_code >= 128:
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# Media key
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ev = NSEvent.otherEventWithType_location_modifierFlags_timestamp_windowNumber_context_subtype_data1_data2_(
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14, # type
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(0, 0), # location
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0xa00, # flags
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0, # timestamp
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0, # window
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0, # ctx
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8, # subtype
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((key_code-128) << 16) | (0xa << 8), # data1
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-1 # data2
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)
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Quartz.CGEventPost(0, ev.CGEvent())
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else:
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# Regular key
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# Apply modifiers if necessary
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event_flags = 0
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if self.current_modifiers["shift"]:
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event_flags += Quartz.kCGEventFlagMaskShift
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if self.current_modifiers["caps"]:
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event_flags += Quartz.kCGEventFlagMaskAlphaShift
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if self.current_modifiers["alt"]:
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event_flags += Quartz.kCGEventFlagMaskAlternate
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if self.current_modifiers["ctrl"]:
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event_flags += Quartz.kCGEventFlagMaskControl
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if self.current_modifiers["cmd"]:
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event_flags += Quartz.kCGEventFlagMaskCommand
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# Update modifiers if necessary
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if key_code == 0x37: # cmd
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self.current_modifiers["cmd"] = True
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elif key_code == 0x38 or key_code == 0x3C: # shift or right shift
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self.current_modifiers["shift"] = True
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elif key_code == 0x39: # caps lock
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self.current_modifiers["caps"] = True
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elif key_code == 0x3A: # alt
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self.current_modifiers["alt"] = True
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elif key_code == 0x3B: # ctrl
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self.current_modifiers["ctrl"] = True
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event = Quartz.CGEventCreateKeyboardEvent(None, key_code, True)
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Quartz.CGEventSetFlags(event, event_flags)
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Quartz.CGEventPost(Quartz.kCGHIDEventTap, event)
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time.sleep(0.01)
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def release(self, key_code):
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""" Sends an 'up' event for the specified scan code """
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if key_code >= 128:
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# Media key
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ev = NSEvent.otherEventWithType_location_modifierFlags_timestamp_windowNumber_context_subtype_data1_data2_(
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14, # type
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(0, 0), # location
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0xb00, # flags
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0, # timestamp
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0, # window
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0, # ctx
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8, # subtype
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((key_code-128) << 16) | (0xb << 8), # data1
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-1 # data2
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)
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Quartz.CGEventPost(0, ev.CGEvent())
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else:
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# Regular key
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# Update modifiers if necessary
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if key_code == 0x37: # cmd
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self.current_modifiers["cmd"] = False
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elif key_code == 0x38 or key_code == 0x3C: # shift or right shift
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self.current_modifiers["shift"] = False
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elif key_code == 0x39: # caps lock
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self.current_modifiers["caps"] = False
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elif key_code == 0x3A: # alt
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self.current_modifiers["alt"] = False
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elif key_code == 0x3B: # ctrl
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self.current_modifiers["ctrl"] = False
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# Apply modifiers if necessary
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event_flags = 0
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if self.current_modifiers["shift"]:
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event_flags += Quartz.kCGEventFlagMaskShift
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if self.current_modifiers["caps"]:
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event_flags += Quartz.kCGEventFlagMaskAlphaShift
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if self.current_modifiers["alt"]:
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event_flags += Quartz.kCGEventFlagMaskAlternate
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if self.current_modifiers["ctrl"]:
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event_flags += Quartz.kCGEventFlagMaskControl
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if self.current_modifiers["cmd"]:
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event_flags += Quartz.kCGEventFlagMaskCommand
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event = Quartz.CGEventCreateKeyboardEvent(None, key_code, False)
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Quartz.CGEventSetFlags(event, event_flags)
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Quartz.CGEventPost(Quartz.kCGHIDEventTap, event)
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time.sleep(0.01)
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def map_char(self, character):
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if character in self.media_keys:
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return (128+self.media_keys[character],[])
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else:
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return self.key_map.character_to_vk(character)
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def map_scan_code(self, scan_code):
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if scan_code >= 128:
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character = [k for k, v in enumerate(self.media_keys) if v == scan_code-128]
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if len(character):
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return character[0]
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return None
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else:
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return self.key_map.vk_to_character(scan_code)
|
||
|
|
|
||
|
|
class KeyEventListener(object):
|
||
|
|
def __init__(self, callback, blocking=False):
|
||
|
|
self.blocking = blocking
|
||
|
|
self.callback = callback
|
||
|
|
self.listening = True
|
||
|
|
self.tap = None
|
||
|
|
|
||
|
|
def run(self):
|
||
|
|
""" Creates a listener and loops while waiting for an event. Intended to run as
|
||
|
|
a background thread. """
|
||
|
|
self.tap = Quartz.CGEventTapCreate(
|
||
|
|
Quartz.kCGSessionEventTap,
|
||
|
|
Quartz.kCGHeadInsertEventTap,
|
||
|
|
Quartz.kCGEventTapOptionDefault,
|
||
|
|
Quartz.CGEventMaskBit(Quartz.kCGEventKeyDown) |
|
||
|
|
Quartz.CGEventMaskBit(Quartz.kCGEventKeyUp) |
|
||
|
|
Quartz.CGEventMaskBit(Quartz.kCGEventFlagsChanged),
|
||
|
|
self.handler,
|
||
|
|
None)
|
||
|
|
loopsource = Quartz.CFMachPortCreateRunLoopSource(None, self.tap, 0)
|
||
|
|
loop = Quartz.CFRunLoopGetCurrent()
|
||
|
|
Quartz.CFRunLoopAddSource(loop, loopsource, Quartz.kCFRunLoopDefaultMode)
|
||
|
|
Quartz.CGEventTapEnable(self.tap, True)
|
||
|
|
|
||
|
|
while self.listening:
|
||
|
|
Quartz.CFRunLoopRunInMode(Quartz.kCFRunLoopDefaultMode, 5, False)
|
||
|
|
|
||
|
|
def handler(self, proxy, e_type, event, refcon):
|
||
|
|
scan_code = Quartz.CGEventGetIntegerValueField(event, Quartz.kCGKeyboardEventKeycode)
|
||
|
|
key_name = name_from_scancode(scan_code)
|
||
|
|
flags = Quartz.CGEventGetFlags(event)
|
||
|
|
event_type = ""
|
||
|
|
is_keypad = (flags & Quartz.kCGEventFlagMaskNumericPad)
|
||
|
|
if e_type == Quartz.kCGEventKeyDown:
|
||
|
|
event_type = "down"
|
||
|
|
elif e_type == Quartz.kCGEventKeyUp:
|
||
|
|
event_type = "up"
|
||
|
|
elif e_type == Quartz.kCGEventFlagsChanged:
|
||
|
|
if key_name.endswith("shift") and (flags & Quartz.kCGEventFlagMaskShift):
|
||
|
|
event_type = "down"
|
||
|
|
elif key_name == "caps lock" and (flags & Quartz.kCGEventFlagMaskAlphaShift):
|
||
|
|
event_type = "down"
|
||
|
|
elif (key_name.endswith("option") or key_name.endswith("alt")) and (flags & Quartz.kCGEventFlagMaskAlternate):
|
||
|
|
event_type = "down"
|
||
|
|
elif key_name == "ctrl" and (flags & Quartz.kCGEventFlagMaskControl):
|
||
|
|
event_type = "down"
|
||
|
|
elif key_name == "command" and (flags & Quartz.kCGEventFlagMaskCommand):
|
||
|
|
event_type = "down"
|
||
|
|
else:
|
||
|
|
event_type = "up"
|
||
|
|
|
||
|
|
if self.blocking:
|
||
|
|
return None
|
||
|
|
|
||
|
|
self.callback(KeyboardEvent(event_type, scan_code, name=key_name, is_keypad=is_keypad))
|
||
|
|
return event
|
||
|
|
|
||
|
|
key_controller = KeyController()
|
||
|
|
|
||
|
|
""" Exported functions below """
|
||
|
|
|
||
|
|
def init():
|
||
|
|
key_controller = KeyController()
|
||
|
|
|
||
|
|
def press(scan_code):
|
||
|
|
""" Sends a 'down' event for the specified scan code """
|
||
|
|
key_controller.press(scan_code)
|
||
|
|
|
||
|
|
def release(scan_code):
|
||
|
|
""" Sends an 'up' event for the specified scan code """
|
||
|
|
key_controller.release(scan_code)
|
||
|
|
|
||
|
|
def map_name(name):
|
||
|
|
""" Returns a tuple of (scan_code, modifiers) where ``scan_code`` is a numeric scan code
|
||
|
|
and ``modifiers`` is an array of string modifier names (like 'shift') """
|
||
|
|
yield key_controller.map_char(name)
|
||
|
|
|
||
|
|
def name_from_scancode(scan_code):
|
||
|
|
""" Returns the name or character associated with the specified key code """
|
||
|
|
return key_controller.map_scan_code(scan_code)
|
||
|
|
|
||
|
|
def listen(callback):
|
||
|
|
if not os.geteuid() == 0:
|
||
|
|
raise OSError("Error 13 - Must be run as administrator")
|
||
|
|
KeyEventListener(callback).run()
|
||
|
|
|
||
|
|
def type_unicode(character):
|
||
|
|
OUTPUT_SOURCE = Quartz.CGEventSourceCreate(Quartz.kCGEventSourceStateHIDSystemState)
|
||
|
|
# Key down
|
||
|
|
event = Quartz.CGEventCreateKeyboardEvent(OUTPUT_SOURCE, 0, True)
|
||
|
|
Quartz.CGEventKeyboardSetUnicodeString(event, len(character.encode('utf-16-le')) // 2, character)
|
||
|
|
Quartz.CGEventPost(Quartz.kCGSessionEventTap, event)
|
||
|
|
# Key up
|
||
|
|
event = Quartz.CGEventCreateKeyboardEvent(OUTPUT_SOURCE, 0, False)
|
||
|
|
Quartz.CGEventKeyboardSetUnicodeString(event, len(character.encode('utf-16-le')) // 2, character)
|
||
|
|
Quartz.CGEventPost(Quartz.kCGSessionEventTap, event)
|