547 lines
21 KiB
C
547 lines
21 KiB
C
#include <stdint.h>
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#include <stdbool.h>
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#include "action.h"
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#include "action_layer.h"
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#include "action_tapping.h"
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#include "keycode.h"
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#include "timer.h"
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#ifndef NO_ACTION_TAPPING
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# if defined(IGNORE_MOD_TAP_INTERRUPT_PER_KEY)
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# error "IGNORE_MOD_TAP_INTERRUPT_PER_KEY has been removed; the code needs to be ported to use HOLD_ON_OTHER_KEY_PRESS_PER_KEY instead."
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# elif defined(IGNORE_MOD_TAP_INTERRUPT)
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# error "IGNORE_MOD_TAP_INTERRUPT is no longer necessary as it is now the default behavior of mod-tap keys. Please remove it from your config."
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# endif
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# ifndef COMBO_ENABLE
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# define IS_TAPPING_RECORD(r) (KEYEQ(tapping_key.event.key, (r->event.key)))
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# else
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# define IS_TAPPING_RECORD(r) (KEYEQ(tapping_key.event.key, (r->event.key)) && tapping_key.keycode == r->keycode)
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# endif
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# define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < GET_TAPPING_TERM(get_record_keycode(&tapping_key, false), &tapping_key))
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# define WITHIN_QUICK_TAP_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < GET_QUICK_TAP_TERM(get_record_keycode(&tapping_key, false), &tapping_key))
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# ifdef DYNAMIC_TAPPING_TERM_ENABLE
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uint16_t g_tapping_term = TAPPING_TERM;
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# endif
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# ifdef TAPPING_TERM_PER_KEY
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__attribute__((weak)) uint16_t get_tapping_term(uint16_t keycode, keyrecord_t *record) {
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# ifdef DYNAMIC_TAPPING_TERM_ENABLE
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return g_tapping_term;
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# else
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return TAPPING_TERM;
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# endif
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}
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# endif
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# ifdef QUICK_TAP_TERM_PER_KEY
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__attribute__((weak)) uint16_t get_quick_tap_term(uint16_t keycode, keyrecord_t *record) {
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return QUICK_TAP_TERM;
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}
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# endif
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# ifdef PERMISSIVE_HOLD_PER_KEY
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__attribute__((weak)) bool get_permissive_hold(uint16_t keycode, keyrecord_t *record) {
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return false;
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}
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# endif
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# ifdef HOLD_ON_OTHER_KEY_PRESS_PER_KEY
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__attribute__((weak)) bool get_hold_on_other_key_press(uint16_t keycode, keyrecord_t *record) {
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return false;
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}
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# endif
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# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
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# include "process_auto_shift.h"
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# endif
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static keyrecord_t tapping_key = {};
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static keyrecord_t waiting_buffer[WAITING_BUFFER_SIZE] = {};
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static uint8_t waiting_buffer_head = 0;
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static uint8_t waiting_buffer_tail = 0;
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static bool process_tapping(keyrecord_t *record);
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static bool waiting_buffer_enq(keyrecord_t record);
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static void waiting_buffer_clear(void);
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static bool waiting_buffer_typed(keyevent_t event);
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static bool waiting_buffer_has_anykey_pressed(void);
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static void waiting_buffer_scan_tap(void);
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static void debug_tapping_key(void);
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static void debug_waiting_buffer(void);
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/** \brief Action Tapping Process
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*
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* FIXME: Needs doc
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*/
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void action_tapping_process(keyrecord_t record) {
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if (process_tapping(&record)) {
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if (IS_EVENT(record.event)) {
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ac_dprintf("processed: ");
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debug_record(record);
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ac_dprintf("\n");
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}
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} else {
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if (!waiting_buffer_enq(record)) {
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// clear all in case of overflow.
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ac_dprintf("OVERFLOW: CLEAR ALL STATES\n");
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clear_keyboard();
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waiting_buffer_clear();
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tapping_key = (keyrecord_t){0};
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}
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}
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// process waiting_buffer
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if (IS_EVENT(record.event) && waiting_buffer_head != waiting_buffer_tail) {
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ac_dprintf("---- action_exec: process waiting_buffer -----\n");
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}
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for (; waiting_buffer_tail != waiting_buffer_head; waiting_buffer_tail = (waiting_buffer_tail + 1) % WAITING_BUFFER_SIZE) {
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if (process_tapping(&waiting_buffer[waiting_buffer_tail])) {
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ac_dprintf("processed: waiting_buffer[%u] =", waiting_buffer_tail);
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debug_record(waiting_buffer[waiting_buffer_tail]);
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ac_dprintf("\n\n");
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} else {
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break;
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}
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}
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if (IS_EVENT(record.event)) {
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ac_dprintf("\n");
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}
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}
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/* Some conditionally defined helper macros to keep process_tapping more
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* readable. The conditional definition of tapping_keycode and all the
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* conditional uses of it are hidden inside macros named TAP_...
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*/
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# define TAP_DEFINE_KEYCODE const uint16_t tapping_keycode = get_record_keycode(&tapping_key, false)
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# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
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# ifdef RETRO_TAPPING_PER_KEY
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# define TAP_GET_RETRO_TAPPING(keyp) get_auto_shifted_key(tapping_keycode, keyp) && get_retro_tapping(tapping_keycode, &tapping_key)
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# else
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# define TAP_GET_RETRO_TAPPING(keyp) get_auto_shifted_key(tapping_keycode, keyp)
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# endif
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/* Used to extend TAPPING_TERM:
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* indefinitely if RETRO_SHIFT does not have a value
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* to RETRO_SHIFT if RETRO_SHIFT is set
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* for possibly retro shifted keys.
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*/
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# define MAYBE_RETRO_SHIFTING(ev, keyp) (get_auto_shifted_key(tapping_keycode, keyp) && TAP_GET_RETRO_TAPPING(keyp) && ((RETRO_SHIFT + 0) == 0 || TIMER_DIFF_16((ev).time, tapping_key.event.time) < (RETRO_SHIFT + 0)))
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# define TAP_IS_LT IS_QK_LAYER_TAP(tapping_keycode)
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# define TAP_IS_MT IS_QK_MOD_TAP(tapping_keycode)
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# define TAP_IS_RETRO IS_RETRO(tapping_keycode)
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# else
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# define TAP_GET_RETRO_TAPPING(keyp) false
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# define MAYBE_RETRO_SHIFTING(ev, kp) false
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# define TAP_IS_LT false
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# define TAP_IS_MT false
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# define TAP_IS_RETRO false
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# endif
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# ifdef PERMISSIVE_HOLD_PER_KEY
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# define TAP_GET_PERMISSIVE_HOLD get_permissive_hold(tapping_keycode, &tapping_key)
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# elif defined(PERMISSIVE_HOLD)
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# define TAP_GET_PERMISSIVE_HOLD true
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# else
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# define TAP_GET_PERMISSIVE_HOLD false
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# endif
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# ifdef HOLD_ON_OTHER_KEY_PRESS_PER_KEY
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# define TAP_GET_HOLD_ON_OTHER_KEY_PRESS get_hold_on_other_key_press(tapping_keycode, &tapping_key)
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# elif defined(HOLD_ON_OTHER_KEY_PRESS)
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# define TAP_GET_HOLD_ON_OTHER_KEY_PRESS true
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# else
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# define TAP_GET_HOLD_ON_OTHER_KEY_PRESS false
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# endif
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/** \brief Tapping
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*
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* Rule: Tap key is typed(pressed and released) within TAPPING_TERM.
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* (without interfering by typing other key)
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*/
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/* return true when key event is processed or consumed. */
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bool process_tapping(keyrecord_t *keyp) {
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const keyevent_t event = keyp->event;
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// state machine is in the "reset" state, no tapping key is to be
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// processed
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if (IS_NOEVENT(tapping_key.event)) {
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if (!IS_EVENT(event)) {
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// early return for tick events
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} else if (event.pressed && is_tap_record(keyp)) {
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// the currently pressed key is a tapping key, therefore transition
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// into the "pressed" tapping key state
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ac_dprintf("Tapping: Start(Press tap key).\n");
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tapping_key = *keyp;
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process_record_tap_hint(&tapping_key);
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waiting_buffer_scan_tap();
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debug_tapping_key();
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} else {
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// the current key is just a regular key, pass it on for regular
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// processing
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process_record(keyp);
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}
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return true;
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}
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# if (defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)) || defined(PERMISSIVE_HOLD_PER_KEY) || defined(HOLD_ON_OTHER_KEY_PRESS_PER_KEY)
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TAP_DEFINE_KEYCODE;
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# endif
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// process "pressed" tapping key state
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if (tapping_key.event.pressed) {
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if (WITHIN_TAPPING_TERM(event) || MAYBE_RETRO_SHIFTING(event, keyp)) {
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if (IS_NOEVENT(event)) {
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// early return for tick events
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return true;
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}
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if (tapping_key.tap.count == 0) {
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if (IS_TAPPING_RECORD(keyp) && !event.pressed) {
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// first tap!
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ac_dprintf("Tapping: First tap(0->1).\n");
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tapping_key.tap.count = 1;
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debug_tapping_key();
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process_record(&tapping_key);
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// copy tapping state
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keyp->tap = tapping_key.tap;
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// enqueue
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return false;
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}
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/* Process a key typed within TAPPING_TERM
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* This can register the key before settlement of tapping,
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* useful for long TAPPING_TERM but may prevent fast typing.
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*/
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// clang-format off
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else if (
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!event.pressed && waiting_buffer_typed(event) &&
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(
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TAP_GET_PERMISSIVE_HOLD ||
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// Causes nested taps to not wait past TAPPING_TERM/RETRO_SHIFT
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// unnecessarily and fixes them for Layer Taps.
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TAP_GET_RETRO_TAPPING(keyp)
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)
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) {
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// clang-format on
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ac_dprintf("Tapping: End. No tap. Interfered by typing key\n");
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process_record(&tapping_key);
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tapping_key = (keyrecord_t){0};
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debug_tapping_key();
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// enqueue
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return false;
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}
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/* Process release event of a key pressed before tapping starts
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* Without this unexpected repeating will occur with having fast repeating setting
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* https://github.com/tmk/tmk_keyboard/issues/60
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*/
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else if (!event.pressed && !waiting_buffer_typed(event)) {
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// Modifier/Layer should be retained till end of this tapping.
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action_t action = layer_switch_get_action(event.key);
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switch (action.kind.id) {
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case ACT_LMODS:
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case ACT_RMODS:
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if (action.key.mods && !action.key.code) return false;
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if (IS_MODIFIER_KEYCODE(action.key.code)) return false;
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break;
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case ACT_LMODS_TAP:
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case ACT_RMODS_TAP:
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if (action.key.mods && keyp->tap.count == 0) return false;
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if (IS_MODIFIER_KEYCODE(action.key.code)) return false;
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break;
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case ACT_LAYER_TAP:
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case ACT_LAYER_TAP_EXT:
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switch (action.layer_tap.code) {
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case 0 ...(OP_TAP_TOGGLE - 1):
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case OP_ON_OFF:
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case OP_OFF_ON:
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case OP_SET_CLEAR:
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return false;
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}
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break;
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}
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// Release of key should be process immediately.
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ac_dprintf("Tapping: release event of a key pressed before tapping\n");
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process_record(keyp);
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return true;
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} else {
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// set interrupted flag when other key pressed during tapping
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if (event.pressed) {
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tapping_key.tap.interrupted = true;
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if (TAP_GET_HOLD_ON_OTHER_KEY_PRESS
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# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
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// Auto Shift cannot evaluate this early
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// Retro Shift uses the hold action for all nested taps even without HOLD_ON_OTHER_KEY_PRESS, so this is fine to skip
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&& !(MAYBE_RETRO_SHIFTING(event, keyp) && get_auto_shifted_key(get_record_keycode(keyp, false), keyp))
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# endif
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) {
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ac_dprintf("Tapping: End. No tap. Interfered by pressed key\n");
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process_record(&tapping_key);
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tapping_key = (keyrecord_t){0};
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debug_tapping_key();
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// enqueue
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return false;
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}
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}
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// enqueue
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return false;
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}
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}
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// tap_count > 0
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else {
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if (IS_TAPPING_RECORD(keyp) && !event.pressed) {
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ac_dprintf("Tapping: Tap release(%u)\n", tapping_key.tap.count);
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keyp->tap = tapping_key.tap;
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process_record(keyp);
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tapping_key = *keyp;
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debug_tapping_key();
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return true;
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} else if (is_tap_record(keyp) && event.pressed) {
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if (tapping_key.tap.count > 1) {
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ac_dprintf("Tapping: Start new tap with releasing last tap(>1).\n");
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// unregister key
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process_record(&(keyrecord_t){
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.tap = tapping_key.tap,
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.event.key = tapping_key.event.key,
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.event.time = event.time,
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.event.pressed = false,
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.event.type = tapping_key.event.type,
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# ifdef COMBO_ENABLE
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.keycode = tapping_key.keycode,
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# endif
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});
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} else {
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ac_dprintf("Tapping: Start while last tap(1).\n");
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}
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tapping_key = *keyp;
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waiting_buffer_scan_tap();
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debug_tapping_key();
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return true;
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} else {
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ac_dprintf("Tapping: key event while last tap(>0).\n");
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# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
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retroshift_swap_times();
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# endif
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process_record(keyp);
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return true;
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}
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}
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}
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// after TAPPING_TERM
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else {
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if (tapping_key.tap.count == 0) {
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ac_dprintf("Tapping: End. Timeout. Not tap(0): ");
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debug_event(event);
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ac_dprintf("\n");
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process_record(&tapping_key);
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tapping_key = (keyrecord_t){0};
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debug_tapping_key();
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return false;
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} else {
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if (IS_NOEVENT(event)) {
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return true;
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}
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if (IS_TAPPING_RECORD(keyp) && !event.pressed) {
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ac_dprintf("Tapping: End. last timeout tap release(>0).");
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keyp->tap = tapping_key.tap;
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process_record(keyp);
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tapping_key = (keyrecord_t){0};
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return true;
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} else if (is_tap_record(keyp) && event.pressed) {
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if (tapping_key.tap.count > 1) {
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ac_dprintf("Tapping: Start new tap with releasing last timeout tap(>1).\n");
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// unregister key
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process_record(&(keyrecord_t){
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.tap = tapping_key.tap,
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.event.key = tapping_key.event.key,
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.event.time = event.time,
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.event.pressed = false,
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.event.type = tapping_key.event.type,
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# ifdef COMBO_ENABLE
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.keycode = tapping_key.keycode,
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# endif
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});
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} else {
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ac_dprintf("Tapping: Start while last timeout tap(1).\n");
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}
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tapping_key = *keyp;
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waiting_buffer_scan_tap();
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debug_tapping_key();
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return true;
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} else {
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ac_dprintf("Tapping: key event while last timeout tap(>0).\n");
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process_record(keyp);
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return true;
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}
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}
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}
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}
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// process "released" tapping key state
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else {
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if (WITHIN_TAPPING_TERM(event) || MAYBE_RETRO_SHIFTING(event, keyp)) {
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if (IS_NOEVENT(event)) {
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// early return for tick events
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return true;
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}
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if (event.pressed) {
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if (IS_TAPPING_RECORD(keyp)) {
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if (WITHIN_QUICK_TAP_TERM(event) && !tapping_key.tap.interrupted && tapping_key.tap.count > 0) {
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// sequential tap.
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keyp->tap = tapping_key.tap;
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if (keyp->tap.count < 15) keyp->tap.count += 1;
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ac_dprintf("Tapping: Tap press(%u)\n", keyp->tap.count);
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process_record(keyp);
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tapping_key = *keyp;
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debug_tapping_key();
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return true;
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}
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// FIX: start new tap again
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tapping_key = *keyp;
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return true;
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} else if (is_tap_record(keyp)) {
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// Sequential tap can be interfered with other tap key.
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ac_dprintf("Tapping: Start with interfering other tap.\n");
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tapping_key = *keyp;
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waiting_buffer_scan_tap();
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debug_tapping_key();
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return true;
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} else {
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// should none in buffer
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// FIX: interrupted when other key is pressed
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tapping_key.tap.interrupted = true;
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process_record(keyp);
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return true;
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}
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} else {
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ac_dprintf("Tapping: other key just after tap.\n");
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process_record(keyp);
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return true;
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}
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} else {
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// Timeout - reset state machine.
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ac_dprintf("Tapping: End(Timeout after releasing last tap): ");
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debug_event(event);
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ac_dprintf("\n");
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tapping_key = (keyrecord_t){0};
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debug_tapping_key();
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return false;
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}
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}
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}
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/** \brief Waiting buffer enq
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*
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* FIXME: Needs docs
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*/
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bool waiting_buffer_enq(keyrecord_t record) {
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if (IS_NOEVENT(record.event)) {
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return true;
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}
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if ((waiting_buffer_head + 1) % WAITING_BUFFER_SIZE == waiting_buffer_tail) {
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ac_dprintf("waiting_buffer_enq: Over flow.\n");
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return false;
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}
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waiting_buffer[waiting_buffer_head] = record;
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waiting_buffer_head = (waiting_buffer_head + 1) % WAITING_BUFFER_SIZE;
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ac_dprintf("waiting_buffer_enq: ");
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debug_waiting_buffer();
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return true;
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}
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/** \brief Waiting buffer clear
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*
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* FIXME: Needs docs
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*/
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void waiting_buffer_clear(void) {
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waiting_buffer_head = 0;
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waiting_buffer_tail = 0;
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}
|
|
|
|
/** \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) {
|
|
// early return if:
|
|
// - tapping already is settled
|
|
// - invalid state: tapping_key released && tap.count == 0
|
|
if ((tapping_key.tap.count > 0) || !tapping_key.event.pressed) {
|
|
return;
|
|
}
|
|
|
|
# if (defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT))
|
|
TAP_DEFINE_KEYCODE;
|
|
# endif
|
|
for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
|
|
keyrecord_t *candidate = &waiting_buffer[i];
|
|
// clang-format off
|
|
if (IS_EVENT(candidate->event) && KEYEQ(candidate->event.key, tapping_key.event.key) && !candidate->event.pressed && (
|
|
WITHIN_TAPPING_TERM(waiting_buffer[i].event) || MAYBE_RETRO_SHIFTING(waiting_buffer[i].event, &tapping_key)
|
|
)) {
|
|
// clang-format on
|
|
tapping_key.tap.count = 1;
|
|
candidate->tap.count = 1;
|
|
process_record(&tapping_key);
|
|
|
|
ac_dprintf("waiting_buffer_scan_tap: found at [%u]\n", i);
|
|
debug_waiting_buffer();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** \brief Tapping key debug print
|
|
*
|
|
* FIXME: Needs docs
|
|
*/
|
|
static void debug_tapping_key(void) {
|
|
ac_dprintf("TAPPING_KEY=");
|
|
debug_record(tapping_key);
|
|
ac_dprintf("\n");
|
|
}
|
|
|
|
/** \brief Waiting buffer debug print
|
|
*
|
|
* FIXME: Needs docs
|
|
*/
|
|
static void debug_waiting_buffer(void) {
|
|
ac_dprintf("{ ");
|
|
for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
|
|
ac_dprintf("[%u]=", i);
|
|
debug_record(waiting_buffer[i]);
|
|
ac_dprintf(" ");
|
|
}
|
|
ac_dprintf("}\n");
|
|
}
|
|
|
|
#endif
|