-}
-
-static void unregister_code(uint8_t code)
-{
- if IS_KEY(code) {
- host_del_key(code);
- host_send_keyboard_report();
- }
- else if IS_MOD(code) {
- host_del_mod_bit(MOD_BIT(code));
- host_send_keyboard_report();
- }
- else if IS_FN(code) {
- host_del_key(keymap_fn_keycode(FN_INDEX(code)));
- host_send_keyboard_report();
- }
- else if IS_MOUSEKEY(code) {
-#ifdef MOUSEKEY_ENABLE
- mousekey_off(code);
- mousekey_send();
-#endif
- }
- else if IS_CONSUMER(code) {
- host_consumer_send(0x0000);
- }
- else if IS_SYSTEM(code) {
- host_system_send(0x0000);
- }
-}
-
-/*
- *
- * Event/State|IDLE PRESSING DELAYING[f] WAITING[f,k]
- * -----------+------------------------------------------------------------------
- * Fn Down |(L+) -*1 WAITING(Sk) IDLE(Rf,Ps)*7
- * Up |(L-) IDLE(L-)*8 IDLE(L-)*8 IDLE(L-)*8
- * Fnk Down |DELAYING(Sf)* (Rf) WAITING(Sk) IDLE(Rf,Ps,Rf)
- * Up |(L-) IDLE(L-/Uf)*8 IDLE(Rf,Uf/L-)*3 IDLE(Rf,Ps,Uf/L-)*3
- * Key Down |PRESSING(Rk) (Rk) WAITING(Sk) IDLE(Rf,Ps,Rk)
- * Up |(Uk) IDLE(Uk)*4 (Uk) IDLE(L+,Ps,Pk)/(Uk)*a
- * |
- * Delay |- - IDLE(L+) IDLE(L+,Ps)
- * Magic Key |COMMAND*5
- *
- * *1: ignore Fn if other key is down.
- * *2: register Fnk if any key is pressing
- * *3: register/unregister delayed Fnk and move to IDLE if code == delayed Fnk, else *8
- * *4: if no keys registered to host
- * *5: unregister all keys
- * *6: only if no keys down
- * *7: ignore Fn because Fnk key and stored key are down.
- * *8: move to IDLE if layer switch(off) occurs, else stay at current state
- * *9: repeat key if pressing Fnk twice quickly(move to PRESSING)
- * *a: layer switch and process waiting key and code if code == wainting key, else unregister key
- *
- * States:
- * IDLE: No key is down except modifiers
- * DELAYING: delay layer switch after pressing Fn with alt keycode
- * WAITING: key is pressed during DELAYING
- *
- * Events:
- * Fn: Fn key without alternative keycode
- * Fnk: Fn key with alternative keycode
- * -: ignore
- * Delay: layer switch delay term is elapsed
- *
- * Actions:
- * Rk: register key
- * Uk: unregister key
- * Rf: register Fn(alt keycode)
- * Uf: unregister Fn(alt keycode)
- * Rs: register stored key
- * Us: unregister stored key
- * Sk: Store key(waiting Key)
- * Sf: Store Fn(delayed Fn)
- * Ps: Process stored key
- * Ps: Process key
- * Is: Interpret stored keys in current layer
- * L+: Switch to new layer(*unregister* all keys but modifiers)
- * L-: Switch back to last layer(*unregister* all keys but modifiers)
- * Ld: Switch back to default layer(*unregister* all keys but modifiers)
- */
-#define NEXT(state) do { \
- debug("NEXT: "); print_P(state_str(kbdstate)); \
- kbdstate = state; \
- debug(" -> "); print_P(state_str(kbdstate)); debug("\n"); \
-} while (0)
-
-static inline void process_key(keyevent_t event)
-{
- uint8_t code = keymap_get_keycode(current_layer, event.key.row, event.key.col);
- keykind_t kind = get_keykind(code, event.pressed);
-
- uint8_t tmp_mods;
-
- debug("state: "); print_P(state_str(kbdstate));
- debug(" kind: "); debug_hex(kind);
- debug(" code: "); debug_hex(code);
- if (event.pressed) { debug("d"); } else { debug("u"); }
- debug("\n");
-
- switch (kbdstate) {
- case IDLE:
- switch (kind) {
- case FN_DOWN:
- layer_switch_on(code);
- break;
- case FN_UP:
- layer_switch_off(code);
- break;
- case FNK_DOWN:
- // repeat Fn alt key when press Fn key down, up then down again quickly
- if (KEYEQ(delayed_fn.event.key, event.key) &&
- timer_elapsed(delayed_fn.time) < LAYER_DELAY) {
- register_code(code);
- NEXT(PRESSING);
- } else {
- delayed_fn = (keyrecord_t) {
- .event = event,
- .code = code,
- .mods = keyboard_report->mods,
- .time = timer_read()
- };
- NEXT(DELAYING);
- }
- break;
- case FNK_UP:
- layer_switch_off(code);
- break;
- case KEY_DOWN:
- register_code(code);
- NEXT(PRESSING);
- break;
- case MOD_DOWN:
- register_code(code);
- break;
- case KEY_UP:
- case MOD_UP:
- unregister_code(code);
- break;
- default:
- break;
- }
- break;
- case PRESSING:
- switch (kind) {
- case FN_DOWN:
- // ignored when any key is pressed
- break;
- case FN_UP:
- if (layer_switch_off(code))
- NEXT(IDLE);
- break;
- case FNK_DOWN:
- register_code(code);
- break;
- case FNK_UP:
- if (layer_switch_off(code)) {
- NEXT(IDLE);
- } else {
- unregister_code(code);
- if (!anykey_sent_to_host())
- NEXT(IDLE);
- }
- break;
- case KEY_DOWN:
- case MOD_DOWN:
- register_code(code);
- break;
- case KEY_UP:
- case MOD_UP:
- unregister_code(code);
- if (!anykey_sent_to_host())
- NEXT(IDLE);
- break;
- default:
- break;
- }
- break;
- case DELAYING:
- switch (kind) {
- case FN_DOWN:
- case FNK_DOWN:
- case KEY_DOWN:
- waiting_key = (keyrecord_t) {
- .event = event,
- .code = code,
- .mods = keyboard_report->mods,
- .time = timer_read()
- };
- NEXT(WAITING);
- break;
- case MOD_DOWN:
- register_code(code);
- break;
- case FN_UP:
- if (layer_switch_off(code))
- NEXT(IDLE);
- break;
- case FNK_UP:
- if (code == delayed_fn.code) {
- // type Fn with alt keycode
- // restore the mod status at the time of pressing Fn key
- tmp_mods = keyboard_report->mods;
- host_set_mods(delayed_fn.mods);
- register_code(delayed_fn.code);
- unregister_code(delayed_fn.code);
- host_set_mods(tmp_mods);
- NEXT(IDLE);
- } else {
- if (layer_switch_off(code))
- NEXT(IDLE);
- }
- break;
- case KEY_UP:
- case MOD_UP:
- unregister_code(code);
- break;
- default:
- break;
- }
- break;
- case WAITING:
- switch (kind) {
- case FN_DOWN:
- case FNK_DOWN:
- case KEY_DOWN:
- tmp_mods = keyboard_report->mods;
- host_set_mods(delayed_fn.mods);
- register_code(delayed_fn.code);
- host_set_mods(waiting_key.mods);
- register_code(waiting_key.code);
- host_set_mods(tmp_mods);
- if (kind == FN_DOWN) {
- // ignore Fn
- } else if (kind == FNK_DOWN) {
- register_code(code);
- } else if (kind == KEY_DOWN) {
- register_code(code);
- }
- NEXT(IDLE);
- break;
- case MOD_DOWN:
- register_code(code);
- break;
- case FN_UP:
- if (layer_switch_off(code))
- NEXT(IDLE);
- break;
- case FNK_UP:
- if (code == delayed_fn.code) {
- // alt down, key down, alt up
- tmp_mods = keyboard_report->mods;
- host_set_mods(delayed_fn.mods);
- register_code(delayed_fn.code);
- host_set_mods(waiting_key.mods);
- register_code(waiting_key.code);
- unregister_code(delayed_fn.code);
- host_set_mods(tmp_mods);
- NEXT(IDLE);
- } else {
- if (layer_switch_off(code))
- NEXT(IDLE);
- }
- break;
- case KEY_UP:
- if (code == waiting_key.code) {
- layer_switch_on(delayed_fn.code);
- NEXT(IDLE);
- // process waiting_key
- tmp_mods = keyboard_report->mods;
- host_set_mods(waiting_key.mods);
- process_key(waiting_key.event);
- host_set_mods(tmp_mods);
- process_key(event);
- } else {
- unregister_code(code);
- }
- break;
- case MOD_UP:
- unregister_code(code);
- break;
- default:
- break;
- }
- break;
- }
-}