Input system

Keyboard, mouse, gamepad, touch, and stylus input handling. Composable state architecture for per-widget input routing, directional focus traversal, focus ordering, and SDL3 event pipeline.

Key files

• src/input_state.h, src/input_keyboard_state.h, src/input_mouse_state.h, src/input_gamepad_state.h
• assets/lua/state-handlers/ — focus, hover, pointer, camera, gamepad, touch, pen handlers
• assets/lua/input-state-router.fnl, assets/lua/touch-router.fnl

Dependencies

• Depends on: Core Platform
• Depended on by: Layout Widget Engine, Activities Architecture

Dev notes

• Composable States — composable state architecture over inheritance
• Directional Focus Traversal — focus movement between widgets
• Focus Change Ordering — focus event ordering
• Sdl3 Input Migration — SDL2 to SDL3 migration
• Selection — selection model

See also

• Core Platform
• Composable States
• Subsystems