Under Application -> Ubuntu Software Center
Search for gcin and then click install
After install completed go to System -> Administration -> Language Support
Under Language tab at the bottom there is an option
Keyboard input methods system: choose “gcin”
Finish all the settings and then close all application and reboot your machine.
After reboot, the gcin input methods should work, default keyboard short-cut is CTRL+SPACE to toggle it on and off
GCIN Input Method Official Wiki
—————- Google Search findings ———————————–