g3kb-switch

This is a keyboard layout switcher for Gnome 3. It is not based on the X interface but rather implements direct D-Bus messaging with the Gnome Shell.

Installation

Build requires glib-2.0, so you need to install the corresponding development package.

In Ubuntu.

$ sudo apt-get install libglib2.0-dev

In Fedora / RHEL / CentOS.

# dnf install glib2-devel

In Gentoo.

$ sudo emerge -av dev-libs/glib

Commands may differ in other Linux distributions.

Now build the program as a regular user.

$ mkdir build && cd build
$ cmake -DCMAKE_BUILD_TYPE=Release ..
$ make

Install being a superuser.

# make install

Usage

Usage: g3kb-switch [-p]      Show the current layout group
       g3kb-switch -l        Show available layout groups
       g3kb-switch -n        Switch to the next layout group
       g3kb-switch -s ARG    Switch to layout group ARG
       g3kb-switch -h        Show this message and exit
       g3kb-switch -v        Show the program version and exit

Integration with vim-xkbswitch

Basically, put in .vimrc lines

let g:XkbSwitchEnabled = 1
let g:XkbSwitchLib = '/usr/local/lib/libg3kbswitch.so'

See details about configuration rules for vim-xkbswitch here.