2 Copyright 2012,2013 Jun Wako <wakojun@gmail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
29 static void process_action(keyrecord_t *record);
30 static bool process_tapping(keyrecord_t *record);
31 static void waiting_buffer_scan_tap(void);
33 static void debug_event(keyevent_t event);
34 static void debug_record(keyrecord_t record);
35 static void debug_action(action_t action);
36 static void debug_tapping_key(void);
37 static void debug_waiting_buffer(void);
43 /* period of tapping(ms) */
45 #define TAPPING_TERM 200
48 /* tap count needed for toggling a feature */
49 #ifndef TAPPING_TOGGLE
50 #define TAPPING_TOGGLE 5
53 /* stores a key event of current tap. */
54 static keyrecord_t tapping_key = {};
56 #define IS_TAPPING() !IS_NOEVENT(tapping_key.event)
57 #define IS_TAPPING_PRESSED() (IS_TAPPING() && tapping_key.event.pressed)
58 #define IS_TAPPING_RELEASED() (IS_TAPPING() && !tapping_key.event.pressed)
59 #define IS_TAPPING_KEY(k) (IS_TAPPING() && KEYEQ(tapping_key.event.key, (k)))
60 #define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < TAPPING_TERM)
66 * stores key events waiting for settling current tap.
68 #define WAITING_BUFFER_SIZE 8
69 static keyrecord_t waiting_buffer[WAITING_BUFFER_SIZE] = {};
71 /* point to empty cell to enq */
72 static uint8_t waiting_buffer_head = 0;
74 /* point to the oldest data cell to deq */
75 static uint8_t waiting_buffer_tail = 0;
77 static bool waiting_buffer_enq(keyrecord_t record)
79 if (IS_NOEVENT(record.event)) {
83 if ((waiting_buffer_head + 1) % WAITING_BUFFER_SIZE == waiting_buffer_tail) {
84 debug("waiting_buffer_enq: Over flow.\n");
88 waiting_buffer[waiting_buffer_head] = record;
89 waiting_buffer_head = (waiting_buffer_head + 1) % WAITING_BUFFER_SIZE;
91 debug("waiting_buffer_enq: "); debug_waiting_buffer();
95 static void waiting_buffer_clear(void)
97 waiting_buffer_head = 0;
98 waiting_buffer_tail = 0;
101 #if TAPPING_TERM >= 500
102 static bool waiting_buffer_typed(keyevent_t event)
104 for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
105 if (KEYEQ(event.key, waiting_buffer[i].event.key) && event.pressed != waiting_buffer[i].event.pressed) {
113 bool waiting_buffer_has_anykey_pressed(void)
115 for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
116 if (waiting_buffer[i].event.pressed) return true;
124 * Problem: Want to capitalize like 'The' but the result tends to be 'THe'.
125 * Solution: Oneshot modifier have its effect on only one key coming next.
126 * Tap Shift, then type 't', 'h' and 'e'. Not need to hold Shift key.
128 * Hold: works as normal modifier.
129 * Tap: one shot modifier.
130 * 2 Tap: cancel one shot modifier.
131 * 5-Tap: toggles enable/disable oneshot feature.
140 static void oneshot_start(uint8_t mods, uint16_t time)
142 oneshot_state.mods = mods;
143 oneshot_state.time = time;
144 oneshot_state.ready = true;
147 static void oneshot_cancel(void)
149 oneshot_state.mods = 0;
150 oneshot_state.time = 0;
151 oneshot_state.ready = false;
154 static void oneshot_toggle(void)
156 oneshot_state.disabled = !oneshot_state.disabled;
161 void action_exec(keyevent_t event)
163 if (!IS_NOEVENT(event)) {
164 debug("\n---- action_exec: start -----\n");
165 debug("EVENT: "); debug_event(event); debug("\n");
168 keyrecord_t record = { .event = event };
170 // pre-process on tapping
171 if (process_tapping(&record)) {
172 if (!IS_NOEVENT(record.event)) {
173 debug("processed: "); debug_record(record); debug("\n");
177 if (!waiting_buffer_enq(record)) {
178 // clear all in case of overflow.
179 debug("OVERFLOW: CLEAR ALL STATES\n");
181 waiting_buffer_clear();
182 tapping_key = (keyrecord_t){};
186 // process waiting_buffer
187 if (!IS_NOEVENT(event) && waiting_buffer_head != waiting_buffer_tail) {
188 debug("---- action_exec: process waiting_buffer -----\n");
191 for (; waiting_buffer_tail != waiting_buffer_head; waiting_buffer_tail = (waiting_buffer_tail + 1) % WAITING_BUFFER_SIZE) {
192 if (process_tapping(&waiting_buffer[waiting_buffer_tail])) {
193 debug("processed: waiting_buffer["); debug_dec(waiting_buffer_tail); debug("] = ");
194 debug_record(waiting_buffer[waiting_buffer_tail]); debug("\n\n");
199 if (!IS_NOEVENT(event)) {
204 static action_t get_action(key_t key)
206 action_t action = keymap_get_action(current_layer, key.pos.row, key.pos.col);
208 /* Transparently use default layer */
209 if (action.code == ACTION_TRANSPARENT) {
210 // TODO: layer stacking
211 action = keymap_get_action(default_layer, key.pos.row, key.pos.col);
212 debug("TRNASPARENT: "); debug_hex16(action.code); debug("\n");
217 static void process_action(keyrecord_t *record)
219 keyevent_t event = record->event;
220 uint8_t tap_count = record->tap_count;
222 if (IS_NOEVENT(event)) { return; }
224 action_t action = get_action(event.key);
225 debug("ACTION: "); debug_action(action); debug("\n");
227 switch (action.kind.id) {
232 uint8_t mods = (action.kind.id == ACT_LMODS) ? action.key.mods :
235 uint8_t tmp_mods = host_get_mods();
238 host_send_keyboard_report();
240 register_code(action.key.code);
241 if (mods && action.key.code) {
242 host_set_mods(tmp_mods);
243 host_send_keyboard_report();
246 if (mods && !action.key.code) {
248 host_send_keyboard_report();
250 unregister_code(action.key.code);
257 uint8_t mods = (action.kind.id == ACT_LMODS_TAP) ? action.key.mods :
259 switch (action.layer.code) {
263 if (tap_count == 0) {
264 debug("MODS_TAP: Oneshot: add_mods\n");
267 else if (tap_count == 1) {
268 debug("MODS_TAP: Oneshot: start\n");
269 oneshot_start(mods, event.time);
271 else if (tap_count == TAPPING_TOGGLE) {
272 debug("MODS_TAP: Oneshot: toggle\n");
276 debug("MODS_TAP: Oneshot: cancel&add_mods\n");
277 // double tap cancels oneshot and works as normal modifier.
282 if (tap_count == 0) {
283 debug("MODS_TAP: Oneshot: cancel/del_mods\n");
284 // cancel oneshot by holding.
288 else if (tap_count == 1) {
289 debug("MODS_TAP: Oneshot: del_mods\n");
294 debug("MODS_TAP: Oneshot: del_mods\n");
303 if (waiting_buffer_has_anykey_pressed()) {
304 debug("MODS_TAP: Tap: Cancel: add_mods\n");
305 // ad hoc: set 0 to cancel tap
306 record->tap_count = 0;
309 debug("MODS_TAP: Tap: register_code\n");
310 register_code(action.key.code);
313 debug("MODS_TAP: No tap: add_mods\n");
318 debug("MODS_TAP: Tap: unregister_code\n");
319 unregister_code(action.key.code);
321 debug("MODS_TAP: No tap: add_mods\n");
330 /* other HID usage */
332 #ifdef EXTRAKEY_ENABLE
333 switch (action.usage.page) {
336 host_system_send(action.usage.code);
343 host_consumer_send(action.usage.code);
345 host_consumer_send(0);
354 #ifdef MOUSEKEY_ENABLE
356 mousekey_on(action.key.code);
359 mousekey_off(action.key.code);
367 switch (action.layer.code) {
368 case LAYER_MOMENTARY: /* momentary */
370 layer_switch(action.layer.val);
373 // NOTE: This is needed by legacy keymap support
374 layer_switch(default_layer);
379 layer_switch(action.layer.val);
382 case LAYER_ON_RELEASE:
383 if (!event.pressed) {
384 layer_switch(action.layer.val);
387 case LAYER_DEFAULT: /* default layer */
388 switch (action.layer.val) {
389 case DEFAULT_ON_BOTH:
390 layer_switch(default_layer);
392 case DEFAULT_ON_PRESS:
394 layer_switch(default_layer);
397 case DEFAULT_ON_RELEASE:
398 if (!event.pressed) {
399 layer_switch(default_layer);
404 case LAYER_TAP_TOGGLE: /* switch on hold and toggle on several taps */
406 if (tap_count < TAPPING_TOGGLE) {
407 layer_switch(action.layer.val);
410 if (tap_count >= TAPPING_TOGGLE) {
411 debug("LAYER_PRESSED: tap toggle.\n");
412 layer_switch(action.layer.val);
416 case LAYER_CHANGE_DEFAULT: /* change default layer */
418 default_layer = action.layer.val;
419 layer_switch(default_layer);
422 default: /* switch layer on hold and key on tap*/
425 debug("LAYER_PRESSED: Tap: register_code\n");
426 register_code(action.layer.code);
428 debug("LAYER_PRESSED: No tap: layer_switch\n");
429 layer_switch(action.layer.val);
433 debug("LAYER_PRESSED: Tap: unregister_code\n");
434 unregister_code(action.layer.code);
436 //debug("LAYER_PRESSED: No tap: NO ACTION\n");
437 // NOTE: This is needed by legacy keymap support
438 debug("LAYER_PRESSED: No tap: return to default layer\n");
439 layer_switch(default_layer);
446 switch (action.layer.code) {
447 case LAYER_MOMENTARY: /* momentary */
449 layer_switch(current_layer ^ action.layer.val);
451 layer_switch(current_layer ^ action.layer.val);
456 layer_switch(current_layer ^ action.layer.val);
459 case LAYER_ON_RELEASE:
460 if (!event.pressed) {
461 layer_switch(current_layer ^ action.layer.val);
464 case LAYER_TAP_TOGGLE: /* switch on hold and toggle on several taps */
466 if (tap_count < TAPPING_TOGGLE) {
467 debug("LAYER_BIT: tap toggle(press).\n");
468 layer_switch(current_layer ^ action.layer.val);
471 if (tap_count <= TAPPING_TOGGLE) {
472 debug("LAYER_BIT: tap toggle(release).\n");
473 layer_switch(current_layer ^ action.layer.val);
478 // change default layer
480 default_layer = current_layer ^ action.layer.val;
481 layer_switch(default_layer);
483 default_layer = current_layer ^ action.layer.val;
484 layer_switch(default_layer);
490 if (IS_TAPPING_KEY(event.key) && tap_count > 0) {
491 debug("LAYER_BIT: Tap: register_code\n");
492 register_code(action.layer.code);
494 debug("LAYER_BIT: No tap: layer_switch(bit on)\n");
495 layer_switch(current_layer ^ action.layer.val);
498 if (IS_TAPPING_KEY(event.key) && tap_count > 0) {
499 debug("LAYER_BIT: Tap: unregister_code\n");
500 unregister_code(action.layer.code);
502 debug("LAYER_BIT: No tap: layer_switch(bit off)\n");
503 layer_switch(current_layer ^ action.layer.val);
517 keymap_call_function(record, action.func.id, action.func.opt);
526 * Rule: Tap key is typed(pressed and released) within TAPPING_TERM.
527 * (without interfering by typing other key)
529 /* return true when key event is processed or consumed. */
530 static bool process_tapping(keyrecord_t *keyp)
532 keyevent_t event = keyp->event;
535 if (IS_TAPPING_PRESSED()) {
536 if (WITHIN_TAPPING_TERM(event)) {
537 if (tapping_key.tap_count == 0) {
538 if (IS_TAPPING_KEY(event.key) && !event.pressed) {
540 debug("Tapping: First tap(0->1).\n");
541 tapping_key.tap_count = 1;
543 process_action(&tapping_key);
546 keyp->tap_count = tapping_key.tap_count;
549 #if TAPPING_TERM >= 500
550 /* This can prevent from typing some tap keys in a row at a time. */
551 else if (!event.pressed && waiting_buffer_typed(event)) {
552 // other key typed. not tap.
553 debug("Tapping: End. No tap. Interfered by typing key\n");
554 process_action(&tapping_key);
555 tapping_key = (keyrecord_t){};
563 // other key events shall be enq'd till tapping state settles.
569 if (IS_TAPPING_KEY(event.key) && !event.pressed) {
570 debug("Tapping: Tap release("); debug_dec(tapping_key.tap_count); debug(")\n");
571 keyp->tap_count = tapping_key.tap_count;
572 process_action(keyp);
577 else if (is_tap_key(keyp->event.key) && event.pressed) {
578 if (tapping_key.tap_count > 1) {
579 debug("Tapping: Start new tap with releasing last tap(>1).\n");
581 process_action(&(keyrecord_t){
582 .tap_count = tapping_key.tap_count,
583 .event.key = tapping_key.event.key,
584 .event.time = event.time,
585 .event.pressed = false
588 debug("Tapping: Start while last tap(1).\n");
591 waiting_buffer_scan_tap();
596 if (!IS_NOEVENT(keyp->event)) {
597 debug("Tapping: key event while last tap(>0).\n");
599 process_action(keyp);
604 // after TAPPING_TERM
606 if (tapping_key.tap_count == 0) {
607 debug("Tapping: End. Timeout. Not tap(0): ");
608 debug_event(event); debug("\n");
609 process_action(&tapping_key);
610 tapping_key = (keyrecord_t){};
614 if (IS_TAPPING_KEY(event.key) && !event.pressed) {
615 debug("Tapping: End. last timeout tap release(>0).");
616 keyp->tap_count = tapping_key.tap_count;
617 process_action(keyp);
618 tapping_key = (keyrecord_t){};
621 else if (is_tap_key(keyp->event.key) && event.pressed) {
622 if (tapping_key.tap_count > 1) {
623 debug("Tapping: Start new tap with releasing last timeout tap(>1).\n");
625 process_action(&(keyrecord_t){
626 .tap_count = tapping_key.tap_count,
627 .event.key = tapping_key.event.key,
628 .event.time = event.time,
629 .event.pressed = false
632 debug("Tapping: Start while last timeout tap(1).\n");
635 waiting_buffer_scan_tap();
640 if (!IS_NOEVENT(keyp->event)) {
641 debug("Tapping: key event while last timeout tap(>0).\n");
643 process_action(keyp);
648 } else if (IS_TAPPING_RELEASED()) {
649 if (WITHIN_TAPPING_TERM(event)) {
650 if (tapping_key.tap_count > 0 && IS_TAPPING_KEY(event.key) && event.pressed) {
652 keyp->tap_count = tapping_key.tap_count + 1;
653 debug("Tapping: Tap press("); debug_dec(keyp->tap_count); debug(")\n");
654 process_action(keyp);
658 } else if (event.pressed && is_tap_key(event.key)) {
659 // Sequential tap can be interfered with other tap key.
660 debug("Tapping: Start with interfering other tap.\n");
662 waiting_buffer_scan_tap();
666 if (!IS_NOEVENT(keyp->event)) debug("Tapping: other key just after tap.\n");
667 process_action(keyp);
671 // timeout. no sequential tap.
672 debug("Tapping: End(Timeout after releasing last tap): ");
673 debug_event(event); debug("\n");
674 tapping_key = (keyrecord_t){};
679 // not tapping satate
681 if (event.pressed && is_tap_key(event.key)) {
682 debug("Tapping: Start(Press tap key).\n");
684 waiting_buffer_scan_tap();
688 process_action(keyp);
694 /* scan buffer for tapping */
695 static void waiting_buffer_scan_tap(void)
697 // tapping already is settled
698 if (tapping_key.tap_count > 0) return;
699 // invalid state: tapping_key released && tap_count == 0
700 if (!tapping_key.event.pressed) return;
702 for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
703 if (IS_TAPPING_KEY(waiting_buffer[i].event.key) &&
704 !waiting_buffer[i].event.pressed &&
705 WITHIN_TAPPING_TERM(waiting_buffer[i].event)) {
706 tapping_key.tap_count = 1;
707 waiting_buffer[i].tap_count = 1;
708 process_action(&tapping_key);
710 debug("waiting_buffer_scan_tap: found at ["); debug_dec(i); debug("]\n");
711 debug_waiting_buffer();
720 * Utilities for actions.
722 void register_code(uint8_t code)
727 else if IS_KEY(code) {
728 // TODO: should push command_proc out of this block?
729 if (command_proc(code)) return;
731 if (oneshot_state.mods && oneshot_state.ready && !oneshot_state.disabled) {
732 uint8_t tmp_mods = host_get_mods();
733 host_add_mods(oneshot_state.mods);
735 host_send_keyboard_report();
737 host_set_mods(tmp_mods);
738 oneshot_state.ready = false;
741 host_send_keyboard_report();
744 else if IS_MOD(code) {
745 host_add_mods(MOD_BIT(code));
746 host_send_keyboard_report();
750 void unregister_code(uint8_t code)
754 host_send_keyboard_report();
756 else if IS_MOD(code) {
757 host_del_mods(MOD_BIT(code));
758 host_send_keyboard_report();
762 void add_mods(uint8_t mods)
766 host_send_keyboard_report();
770 void del_mods(uint8_t mods)
774 host_send_keyboard_report();
778 void set_mods(uint8_t mods)
781 host_send_keyboard_report();
784 void clear_keyboard(void)
787 clear_keyboard_but_mods();
790 void clear_keyboard_but_mods(void)
793 host_send_keyboard_report();
794 #ifdef MOUSEKEY_ENABLE
798 #ifdef EXTRAKEY_ENABLE
800 host_consumer_send(0);
804 bool sending_anykey(void)
806 return (host_has_anykey() || host_mouse_in_use() ||
807 host_last_sysytem_report() || host_last_consumer_report());
810 void layer_switch(uint8_t new_layer)
812 if (current_layer != new_layer) {
813 debug("Layer Switch: "); debug_hex(current_layer);
814 debug(" -> "); debug_hex(new_layer); debug("\n");
816 current_layer = new_layer;
817 clear_keyboard_but_mods(); // To avoid stuck keys
818 // NOTE: update mods with full scan of matrix? if modifier changes between layers
822 bool is_tap_key(key_t key)
824 action_t action = get_action(key);
826 switch (action.kind.id) {
832 switch (action.layer.code) {
833 case LAYER_MOMENTARY:
835 case LAYER_ON_RELEASE:
838 case LAYER_TAP_TOGGLE:
839 default: /* tap key */
844 if (action.func.opt & FUNC_TAP) { return true; }
854 static void debug_event(keyevent_t event)
856 debug_hex16(event.key.raw);
857 if (event.pressed) debug("d("); else debug("u(");
858 debug_dec(event.time); debug(")");
860 static void debug_record(keyrecord_t record)
862 debug_event(record.event); debug(":"); debug_dec(record.tap_count);
864 static void debug_action(action_t action)
866 switch (action.kind.id) {
867 case ACT_LMODS: debug("ACT_LMODS"); break;
868 case ACT_RMODS: debug("ACT_RMODS"); break;
869 case ACT_LMODS_TAP: debug("ACT_LMODS_TAP"); break;
870 case ACT_RMODS_TAP: debug("ACT_RMODS_TAP"); break;
871 case ACT_USAGE: debug("ACT_USAGE"); break;
872 case ACT_MOUSEKEY: debug("ACT_MOUSEKEY"); break;
873 case ACT_LAYER: debug("ACT_LAYER"); break;
874 case ACT_LAYER_BIT: debug("ACT_LAYER_BIT"); break;
875 case ACT_MACRO: debug("ACT_MACRO"); break;
876 case ACT_COMMAND: debug("ACT_COMMAND"); break;
877 case ACT_FUNCTION: debug("ACT_FUNCTION"); break;
878 default: debug("UNKNOWN"); break;
881 debug_hex4(action.kind.param>>8);
883 debug_hex8(action.kind.param & 0xff);
886 static void debug_tapping_key(void)
888 debug("TAPPING_KEY="); debug_record(tapping_key); debug("\n");
890 static void debug_waiting_buffer(void)
893 for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
894 debug("["); debug_dec(i); debug("]="); debug_record(waiting_buffer[i]); debug(" ");