1 # indicator-keyboard-led - simulate keyboard lock keys LED
3 This is a Unity application indicator designed for keyboards without lock
4 keys LED. It allows the user to check the state of the three locks (Caps lock,
5 Num lock and Scroll lock) without requiring any mouse or keyboard action. It
6 also allows the lock keys to be toggled with mouse clicks, which could be
7 useful for keyboards without Scroll lock keys or malfunctioning keyboards.
11 ![indicator default][sc1]
12 Default appearance of the indicator with Num lock on and Caps and Scroll locks
15 ![indicator menu][sc2]
16 Menu of the indicator, shown on click. The locks can be toggled by clicking
17 the respective item in the menu.
19 ![indicator short][sc3]
20 Alternative (short) appearance of the indicator.
22 [sc1]: screenshots/sc1.png
23 [sc2]: screenshots/sc2.png
24 [sc3]: screenshots/sc3.png
30 - Python 3 GObject introspection (python3-gi)
33 Those marked with (*) are probably installed by default in recent Ubuntu
34 distributions. To install the rest, run:
36 sudo apt-get install python3-gi xdotool
40 1. Install the dependencies listed above.
41 2. Clone this repository.
42 3. Add the script as a startup application. (Use option `--short` for short
43 appearance if desired.)
44 4. Run the script manually for the first time. (Alternatively, log out
46 5. The indicator should be shown at the top right corner, with a filled circle
47 representing a lock turned on and an unfilled circle representing a lock
49 6. Clicking on the indicator should result in a menu with the three locks.
50 Clicking on the menu item would cause the corresponding lock to toggle.
54 It seems to be a common problem that Scroll Lock is not usable in Ubuntu.
55 To solve this, do the following (assuming US keyboard):
57 > # backup your symbols file
58 > sudo cp /usr/share/X11/xkb/symbols/us{,.distribution}
60 > Add the following line in the `xkb_symbols "basic" {` section. Do not worry
61 > if that second line is not there, it is only there for some languages and
62 > was not there for us on my system.
65 > modifier_map Mod3 { Scroll_Lock }; <==<< Add this line
67 > include "level3(ralt_switch)" <==<< before this line
71 > You may have to do the same in your other layouts if you switch between
74 > Also, there is a cache where xkb layouts live. You should clear it before
75 > restarting your X server to check the new keyboard symbol file(s).
77 > sudo dpkg-reconfigure xkb-data
79 *By Pykler and Giovanni Toraldo on AskUbuntu.* [Source][quotesrc]. Slightly
80 modified. [Original source][origsrc] by dm+ on PCLinuxOS-Forums.
82 [origsrc]: http://www.pclinuxos.com/forum/index.php/topic,125690.msg1052201.html?PHPSESSID=2qsv83lve6dgd0ivq14bfcjc30#msg1052201
83 [quotesrc]: http://askubuntu.com/a/597757/274080
88 The program "indicator-keyboard-led.py" is released under the MIT License.
89 Please refer to the file for the full text of the license.
91 The icon "icon.svg" is released to the public domain.
95 I would like to thank [Tobias Schlitt](https://github.com/tobyS), who wrote
96 [indicator-chars](https://github.com/tobyS/indicator-chars) which I used
97 as a reference when writing this software.
99 The icon used in the indicator (icon.svg) is modified from the file
100 "emblem-readonly.svg" by [Jakub Steiner](http://jimmac.musichall.cz)
101 who released it to the public domain for the
102 [Tango Icon Library](http://tango.freedesktop.org/Tango_Icon_Library).
108 I was a user of [indicator-keylock][ind-kl], but only one key lock can be shown
109 on the panel. I didn't like the Notify OSD events either.
111 I then came across [lks-indicator][lks] and [indicator-xbdmod][xbdmod], but
112 I didn't like the fact that they refresh the indicator on a regular time
113 interval (every *x* milliseconds) rather than on state changes (only when
114 the locks are toggled).
116 I also thought it would be fun to be able to toggle the locks on-screen.
118 [ind-kl]: https://launchpad.net/~tsbarnes/+archive/ubuntu/indicator-keylock
119 [lks]: https://github.com/SergKolo/lks-indicator
120 [xbdmod]: https://github.com/sneetsher/indicator-xkbmod