-#ifdef EXTRAKEY_ENABLE
-#include <util/delay.h>
-#endif
-
-
-#define LAYER_DELAY 250
-
-typedef enum keykind {
- NONE,
- FN_DOWN, FN_UP,
- FNK_DOWN, FNK_UP,
- KEY_DOWN, KEY_UP,
- MOD_DOWN, MOD_UP,
-} keykind_t;
-
-typedef enum { IDLE, DELAYING, WAITING, PRESSING } kbdstate_t;
-
-
-uint8_t current_layer = 0;
-uint8_t default_layer = 0;
-
-/* keyboard internal states */
-static kbdstate_t kbdstate = IDLE;
-static uint8_t fn_state_bits = 0;
-static keyrecord_t delayed_fn;
-static keyrecord_t waiting_key;
-
-
-static const char *state_str(kbdstate_t state)
-{
- if (state == IDLE) return PSTR("IDLE");
- if (state == DELAYING) return PSTR("DELAYING");
- if (state == WAITING) return PSTR("WAITING");
- if (state == PRESSING) return PSTR("PRESSING");
- return PSTR("UNKNOWN");
-}
-
-static inline keykind_t get_keykind(uint8_t code, bool pressed)
-{
- if IS_KEY(code) return (pressed ? KEY_DOWN : KEY_UP);
- if IS_MOD(code) return (pressed ? MOD_DOWN : MOD_UP);
- if IS_FN(code) {
- if (keymap_fn_keycode(FN_INDEX(code)))
- return (pressed ? FNK_DOWN : FNK_UP);
- else
- return (pressed ? FN_DOWN : FN_UP);
- }
- if IS_MOUSEKEY(code) return (pressed ? KEY_DOWN : KEY_UP);
- if IS_SYSTEM(code) return (pressed ? KEY_DOWN : KEY_UP);
- if IS_CONSUMER(code) return (pressed ? KEY_DOWN : KEY_UP);
- return NONE;
-}
-
-static void clear_keyboard(void)
-{
- host_clear_keys();
- host_clear_mods();
- host_send_keyboard_report();
-
- host_system_send(0);
- host_consumer_send(0);
-
- mousekey_clear();
- mousekey_send();
-}
-
-static void clear_keyboard_but_mods(void)
-{
- host_clear_keys();
- host_send_keyboard_report();
-
- host_system_send(0);
- host_consumer_send(0);
-
- mousekey_clear();
- mousekey_send();
-}
-
-static void layer_switch_on(uint8_t code)
-{
- if (!IS_FN(code)) return;
- fn_state_bits |= FN_BIT(code);
- if (current_layer != keymap_fn_layer(FN_INDEX(code))) {
- clear_keyboard_but_mods();
-
- debug("Layer Switch(on): "); debug_hex(current_layer);
- current_layer = keymap_fn_layer(FN_INDEX(code));
- debug(" -> "); debug_hex(current_layer); debug("\n");
- }
-}
-
-static void layer_switch_off(uint8_t code)
-{
- if (!IS_FN(code)) return;
- fn_state_bits &= ~FN_BIT(code);
- if (current_layer != keymap_fn_layer(biton(fn_state_bits))) {
- clear_keyboard_but_mods();
-
- debug("Layer Switch(off): "); debug_hex(current_layer);
- current_layer = keymap_fn_layer(biton(fn_state_bits));
- debug(" -> "); debug_hex(current_layer); debug("\n");
- }
-}
-
-// whether any key except modifier is down or not
-static inline bool is_anykey_down(void)
-{
- for (int r = 0; r < MATRIX_ROWS; r++) {
- matrix_row_t matrix_row = matrix_get_row(r);
- for (int c = 0; c < MATRIX_COLS; c++) {
- if (matrix_row && (1<<c)) {
- if (IS_KEY(keymap_get_keycode(current_layer, r, c))) {
- return true;
- }
- }
- }
- }
- return false;
-}
-
-static void register_code(uint8_t code)
-{
- if IS_KEY(code) {
- host_add_key(code);
- host_send_keyboard_report();
- }
- else if IS_MOD(code) {
- host_add_mod_bit(MOD_BIT(code));
- host_send_keyboard_report();
- }
- else if IS_MOUSEKEY(code) {
- mousekey_on(code);
- mousekey_send();
- }
- else if IS_CONSUMER(code) {
- uint16_t usage = 0;
- switch (code) {
- case KC_AUDIO_MUTE:
- usage = AUDIO_MUTE;
- break;
- case KC_AUDIO_VOL_UP:
- usage = AUDIO_VOL_UP;
- break;
- case KC_AUDIO_VOL_DOWN:
- usage = AUDIO_VOL_DOWN;
- break;
- case KC_MEDIA_NEXT_TRACK:
- usage = TRANSPORT_NEXT_TRACK;
- break;
- case KC_MEDIA_PREV_TRACK:
- usage = TRANSPORT_PREV_TRACK;
- break;
- case KC_MEDIA_STOP:
- usage = TRANSPORT_STOP;
- break;
- case KC_MEDIA_PLAY_PAUSE:
- usage = TRANSPORT_PLAY_PAUSE;
- break;
- case KC_MEDIA_SELECT:
- usage = AL_CC_CONFIG;
- break;
- case KC_MAIL:
- usage = AL_EMAIL;
- break;
- case KC_CALCULATOR:
- usage = AL_CALCULATOR;
- break;
- case KC_MY_COMPUTER:
- usage = AL_LOCAL_BROWSER;
- break;
- case KC_WWW_SEARCH:
- usage = AC_SEARCH;
- break;
- case KC_WWW_HOME:
- usage = AC_HOME;
- break;
- case KC_WWW_BACK:
- usage = AC_BACK;
- break;
- case KC_WWW_FORWARD:
- usage = AC_FORWARD;
- break;
- case KC_WWW_STOP:
- usage = AC_STOP;
- break;
- case KC_WWW_REFRESH:
- usage = AC_REFRESH;
- break;
- case KC_WWW_FAVORITES:
- usage = AC_BOOKMARKS;
- break;
- }
- host_consumer_send(usage);
- }
- else if IS_SYSTEM(code) {
- uint16_t usage = 0;
- switch (code) {
- case KC_SYSTEM_POWER:
- usage = SYSTEM_POWER_DOWN;
- break;
- case KC_SYSTEM_SLEEP:
- usage = SYSTEM_SLEEP;
- break;
- case KC_SYSTEM_WAKE:
- usage = SYSTEM_WAKE_UP;
- break;
- }
- host_system_send(usage);
- }
-
-}
-
-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_MOUSEKEY(code) {
- mousekey_off(code);
- mousekey_send();
- }
- else if IS_CONSUMER(code) {
- host_consumer_send(0x0000);
- }
- else if IS_SYSTEM(code) {
- host_system_send(0x0000);
- }
-}
-
-/*
- *
- * Event/State|IDLE DELAYING[f] WAITING[f,k] PRESSING
- * -----------+------------------------------------------------------------------
- * Fn Down |IDLE(L+) WAITING(Sk) WAITING(Sk) -
- * Up |IDLE(L-) IDLE(L-) IDLE(L-) IDLE(L-)
- * Fnk Down |DELAYING(Sf) WAITING(Sk) WAINTING(Sk) PRESSING(Rf)
- * Up |IDLE(L-) IDLE(Rf,Uf) IDLE(Rf,Ps,Uf)*3 PRESSING(Uf)
- * Key Down |PRESSING(Rk) WAITING(Sk) WAITING(Sk) PRESSING(Rk)
- * Up |IDLE(Uk) DELAYING(Uk) IDLE(L+,Ps,Uk) IDLE(Uk)*4
- * Delay |- IDLE(L+) IDLE(L+,Ps) -
- * |
- * No key Down|IDLE(Ld) IDLE(Ld) IDLE(Ld) IDLE(Ld)
- *
- * *2: register Fnk if any key is pressing
- * *3: when Fnk == Stored Fnk, if not ignore.
- * *4: when no registered key any more
- *
- * States:
- * IDLE:
- * 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
- *
- * Actions:
- * Rk: register key
- * Uk: unregister key
- * Rf: register stored Fn(alt keycode)
- * Uf: unregister stored Fn(alt keycode)
- * Rs: register stored key
- * Us: unregister stored key
- * Sk: store key
- * Sf: store Fn
- * Ps: play stored key(Interpret stored key and transit state)
- * 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);