Install grail-tools by entering the following commands in the terminal:
sudo apt update sudo apt install grail-tools
Description:
Gesture Recognition And Instantiation Library - test tools
This library consists of an interface and tools for handling gesture recognition and gesture instantiation. Applications can use the grail callbacks to receive gesture primitives and raw input events from the underlying kernel device. . This package provides some test tools for the grail library.
Homepage: https://launchpad.net/grail
Version: 3.1.0+16.04.20160125-0ubuntu2
Section: universe/libdevel