The keyboard layout is Phonetic, you may find a typing layout in the given link: https://fedoraproject.org/wiki/I18N/Indic/HindiKeyboardLayouts#Phonetic_Keyboard_Layout

Hi, I had also the same issue. I am working with a project of kochi airport taxi and I want to use hindi typing here in order to provide more functionality to my project. As I founded the question here I am really happy and thank you so much for sharing this question here. I will make a try with the link you provided. Thank you so much for sharing it.