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-rw-r--r--src/plugins/xkb.py73
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diff --git a/src/plugins/xkb.py b/src/plugins/xkb.py
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+# -*- python -*-
+'''
+xpybar – xmobar replacement written in python
+Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+'''
+
+import Xlib.XK
+
+
+class XKB:
+ '''
+ X keyboard monitor
+ '''
+
+
+ NUM = 1
+ '''
+ :int The bit in `get_locks` representing Num Lock
+ '''
+
+ CAPS = 2
+ '''
+ :int The bit in `get_locks` representing Royal Canterlot Voice
+ '''
+
+ SCROLL = 4
+ '''
+ :int The bit in `get_locks` representing Scroll Lock
+ '''
+
+
+ def __init__(self):
+ '''
+ Constructor
+ '''
+ self.__root = get_screen().root
+
+ lockkey = lambda lock : self.__display.keysym_to_keycode(Xlib.XK.string_to_keysym(lock + '_Lock'))
+ find = lambda array, item : (1 << array.index(item)) if item in array else -1
+ mods = [x[0] for x in get_display().get_modifier_mapping()]
+
+ self.__num = find(mods, lockkey('Num'))
+ self.__caps = find(mods, lockkey('Caps'))
+ self.__scroll = find(mods, lockkey('Scroll'))
+
+
+ def get_locks(self):
+ '''
+ Get the currently active lock keys (num lock, caps lock and scroll lock, but not compose)
+
+ @return :int The bitwise OR of the active lock keys (XKB.NUM, XKB.CAPS, XKB.SCROLL)
+ '''
+ # TODO add update listener
+ mask = self.__root.query_pointer().mask
+ rc = 0
+ rc |= XKB.NUM if (mask & self.__num) == self.__num else 0
+ rc |= XKB.CAPS if (mask & self.__caps) == self.__caps else 0
+ rc |= XKB.SCROLL if (mask & self.__scroll) == self.__scroll else 0
+ return rc
+