#include <stdint.h> #include <stdbool.h> #include "action.h" #include "action_layer.h" #include "action_tapping.h" #include "keycode.h" #include "timer.h" #ifdef DEBUG_ACTION #include "debug.h" #else #include "nodebug.h" #endif #ifndef NO_ACTION_TAPPING #define IS_TAPPING() !IS_NOEVENT(tapping_key.event) #define IS_TAPPING_PRESSED() (IS_TAPPING() && tapping_key.event.pressed) #define IS_TAPPING_RELEASED() (IS_TAPPING() && !tapping_key.event.pressed) #define IS_TAPPING_KEY(k) (IS_TAPPING() && KEYEQ(tapping_key.event.key, (k))) #define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < TAPPING_TERM) static keyrecord_t tapping_key = {}; static keyrecord_t waiting_buffer[WAITING_BUFFER_SIZE] = {}; static uint8_t waiting_buffer_head = 0; static uint8_t waiting_buffer_tail = 0; static bool process_tapping(keyrecord_t *record); static bool waiting_buffer_enq(keyrecord_t record); static void waiting_buffer_clear(void); static bool waiting_buffer_typed(keyevent_t event); static bool waiting_buffer_has_anykey_pressed(void); static void waiting_buffer_scan_tap(void); static void debug_tapping_key(void); static void debug_waiting_buffer(void); /** \brief Action Tapping Process * * FIXME: Needs doc */ void action_tapping_process(keyrecord_t record) { if (process_tapping(&record)) { if (!IS_NOEVENT(record.event)) { debug("processed: "); debug_record(record); debug("\n"); } } else { if (!waiting_buffer_enq(record)) { // clear all in case of overflow. debug("OVERFLOW: CLEAR ALL STATES\n"); clear_keyboard(); waiting_buffer_clear(); tapping_key = (keyrecord_t){}; } } // process waiting_buffer if (!IS_NOEVENT(record.event) && waiting_buffer_head != waiting_buffer_tail) { debug("---- action_exec: process waiting_buffer -----\n"); } for (; waiting_buffer_tail != waiting_buffer_head; waiting_buffer_tail = (waiting_buffer_tail + 1) % WAITING_BUFFER_SIZE) { if (process_tapping(&waiting_buffer[waiting_buffer_tail])) { debug("processed: waiting_buffer["); debug_dec(waiting_buffer_tail); debug("] = "); debug_record(waiting_buffer[waiting_buffer_tail]); debug("\n\n"); } else { break; } } if (!IS_NOEVENT(record.event)) { debug("\n"); } } /** \brief Tapping * * Rule: Tap key is typed(pressed and released) within TAPPING_TERM. * (without interfering by typing other key) */ /* return true when key event is processed or consumed. */ bool process_tapping(keyrecord_t *keyp) { keyevent_t event = keyp->event; // if tapping if (IS_TAPPING_PRESSED()) { if (WITHIN_TAPPING_TERM(event)) { if (tapping_key.tap.count == 0) { if (IS_TAPPING_KEY(event.key) && !event.pressed) { // first tap! debug("Tapping: First tap(0->1).\n"); tapping_key.tap.count = 1; debug_tapping_key(); process_record(&tapping_key); // copy tapping state keyp->tap = tapping_key.tap; // enqueue return false; } #if TAPPING_TERM >= 500 || defined PERMISSIVE_HOLD /* Process a key typed within TAPPING_TERM * This can register the key before settlement of tapping, * useful for long TAPPING_TERM but may prevent fast typing. */ else if (IS_RELEASED(event) && waiting_buffer_typed(event)) { debug("Tapping: End. No tap. Interfered by typing key\n"); process_record(&tapping_key); tapping_key = (keyrecord_t){}; debug_tapping_key(); // enqueue return false; } #endif /* Process release event of a key pressed before tapping starts * Without this unexpected repeating will occur with having fast repeating setting * https://github.com/tmk/tmk_keyboard/issues/60 */ else if (IS_RELEASED(event) && !waiting_buffer_typed(event)) { // Modifier should be retained till end of this tapping. action_t action = layer_switch_get_action(event.key); switch (action.kind.id) { case ACT_LMODS: case ACT_RMODS: if (action.key.mods && !action.key.code) return false; if (IS_MOD(action.key.code)) return false; break; case ACT_LMODS_TAP: case ACT_RMODS_TAP: if (action.key.mods && keyp->tap.count == 0) return false; if (IS_MOD(action.key.code)) return false; break; } // Release of key should be process immediately. debug("Tapping: release event of a key pressed before tapping\n"); process_record(keyp); return true; } else { // set interrupted flag when other key preesed during tapping if (event.pressed) { tapping_key.tap.interrupted = true; } // enqueue return false; } } // tap_count > 0 else { if (IS_TAPPING_KEY(event.key) && !event.pressed) { debug("Tapping: Tap release("); debug_dec(tapping_key.tap.count); debug(")\n"); keyp->tap = tapping_key.tap; process_record(keyp); tapping_key = *keyp; debug_tapping_key(); return true; } else if (is_tap_key(event.key) && event.pressed) { if (tapping_key.tap.count > 1) { debug("Tapping: Start new tap with releasing last tap(>1).\n"); // unregister key process_record(&(keyrecord_t){ .tap = tapping_key.tap, .event.key = tapping_key.event.key, .event.time = event.time, .event.pressed = false }); } else { debug("Tapping: Start while last tap(1).\n"); } tapping_key = *keyp; waiting_buffer_scan_tap(); debug_tapping_key(); return true; } else { if (!IS_NOEVENT(event)) { debug("Tapping: key event while last tap(>0).\n"); } process_record(keyp); return true; } } } // after TAPPING_TERM else { if (tapping_key.tap.count == 0) { debug("Tapping: End. Timeout. Not tap(0): "); debug_event(event); debug("\n"); process_record(&tapping_key); tapping_key = (keyrecord_t){}; debug_tapping_key(); return false; } else { if (IS_TAPPING_KEY(event.key) && !event.pressed) { debug("Tapping: End. last timeout tap release(>0)."); keyp->tap = tapping_key.tap; process_record(keyp); tapping_key = (keyrecord_t){}; return true; } else if (is_tap_key(event.key) && event.pressed) { if (tapping_key.tap.count > 1) { debug("Tapping: Start new tap with releasing last timeout tap(>1).\n"); // unregister key process_record(&(keyrecord_t){ .tap = tapping_key.tap, .event.key = tapping_key.event.key, .event.time = event.time, .event.pressed = false }); } else { debug("Tapping: Start while last timeout tap(1).\n"); } tapping_key = *keyp; waiting_buffer_scan_tap(); debug_tapping_key(); return true; } else { if (!IS_NOEVENT(event)) { debug("Tapping: key event while last timeout tap(>0).\n"); } process_record(keyp); return true; } } } } else if (IS_TAPPING_RELEASED()) { if (WITHIN_TAPPING_TERM(event)) { if (event.pressed) { if (IS_TAPPING_KEY(event.key)) { #ifndef TAPPING_FORCE_HOLD if (!tapping_key.tap.interrupted && tapping_key.tap.count > 0) { // sequential tap. keyp->tap = tapping_key.tap; if (keyp->tap.count < 15) keyp->tap.count += 1; debug("Tapping: Tap press("); debug_dec(keyp->tap.count); debug(")\n"); process_record(keyp); tapping_key = *keyp; debug_tapping_key(); return true; } #endif // FIX: start new tap again tapping_key = *keyp; return true; } else if (is_tap_key(event.key)) { // Sequential tap can be interfered with other tap key. debug("Tapping: Start with interfering other tap.\n"); tapping_key = *keyp; waiting_buffer_scan_tap(); debug_tapping_key(); return true; } else { // should none in buffer // FIX: interrupted when other key is pressed tapping_key.tap.interrupted = true; process_record(keyp); return true; } } else { if (!IS_NOEVENT(event)) debug("Tapping: other key just after tap.\n"); process_record(keyp); return true; } } else { // FIX: process_action here? // timeout. no sequential tap. debug("Tapping: End(Timeout after releasing last tap): "); debug_event(event); debug("\n"); tapping_key = (keyrecord_t){}; debug_tapping_key(); return false; } } // not tapping state else { if (event.pressed && is_tap_key(event.key)) { debug("Tapping: Start(Press tap key).\n"); tapping_key = *keyp; process_record_tap_hint(&tapping_key); waiting_buffer_scan_tap(); debug_tapping_key(); return true; } else { process_record(keyp); return true; } } } /** \brief Waiting buffer enq * * FIXME: Needs docs */ bool waiting_buffer_enq(keyrecord_t record) { if (IS_NOEVENT(record.event)) { return true; } if ((waiting_buffer_head + 1) % WAITING_BUFFER_SIZE == waiting_buffer_tail) { debug("waiting_buffer_enq: Over flow.\n"); return false; } waiting_buffer[waiting_buffer_head] = record; waiting_buffer_head = (waiting_buffer_head + 1) % WAITING_BUFFER_SIZE; debug("waiting_buffer_enq: "); debug_waiting_buffer(); return true; } /** \brief Waiting buffer clear * * FIXME: Needs docs */ void waiting_buffer_clear(void) { waiting_buffer_head = 0; waiting_buffer_tail = 0; } /** \brief Waiting buffer typed * * FIXME: Needs docs */ bool waiting_buffer_typed(keyevent_t event) { for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) { if (KEYEQ(event.key, waiting_buffer[i].event.key) && event.pressed != waiting_buffer[i].event.pressed) { return true; } } return false; } /** \brief Waiting buffer has anykey pressed * * FIXME: Needs docs */ __attribute__((unused)) bool waiting_buffer_has_anykey_pressed(void) { for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) { if (waiting_buffer[i].event.pressed) return true; } return false; } /** \brief Scan buffer for tapping * * FIXME: Needs docs */ void waiting_buffer_scan_tap(void) { // tapping already is settled if (tapping_key.tap.count > 0) return; // invalid state: tapping_key released && tap.count == 0 if (!tapping_key.event.pressed) return; for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) { if (IS_TAPPING_KEY(waiting_buffer[i].event.key) && !waiting_buffer[i].event.pressed && WITHIN_TAPPING_TERM(waiting_buffer[i].event)) { tapping_key.tap.count = 1; waiting_buffer[i].tap.count = 1; process_record(&tapping_key); debug("waiting_buffer_scan_tap: found at ["); debug_dec(i); debug("]\n"); debug_waiting_buffer(); return; } } } /** \brief Tapping key debug print * * FIXME: Needs docs */ static void debug_tapping_key(void) { debug("TAPPING_KEY="); debug_record(tapping_key); debug("\n"); } /** \brief Waiting buffer debug print * * FIXME: Needs docs */ static void debug_waiting_buffer(void) { debug("{ "); for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) { debug("["); debug_dec(i); debug("]="); debug_record(waiting_buffer[i]); debug(" "); } debug("}\n"); } #endif