Talkback

This is a basic implementation of the Android Talkback a11y service for Fuchsia. Its a work in progress with the current capabilities:

• Single tap/slide one finger to read text under finger and set a11y focus.
• Double tap to perform a tap action.
• Use two finger touch to simulate using one finger regularly.

Requires connections to the a11y manager and a11y touch dispatcher service to function.

Gesture Detection State Diagram