Make a controller drive the Compose UI when not streaming, so the menus work on a TV
remote AND on a controller paired to a phone:
- MainActivity maps gamepad face buttons to the keys Compose's focus system
understands (A -> DPAD_CENTER to activate, B -> BACK); D-pad *keys* already move
focus and pass through untouched.
- For controllers whose D-pad reports as HAT axes (or to navigate with the left
stick), dispatchGenericMotionEvent converts AXIS_HAT_X/Y / AXIS_X/Y into discrete
D-pad key events, edge-detected so a held direction moves focus exactly once.
- HostCard draws a clear primary-colour focus border (the default state layer is too
subtle across a room on TV).
All gated on "not streaming" -- during a stream the controller still forwards to the
host unchanged. Compile-verified (./gradlew :app:assembleDebug); the focus behaviour
itself needs on-device validation (no KVM here for a TV emulator).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
enricobuehler
dc1e1bbc72