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tmk_keyboard/common/action.c
2013-03-21 15:24:48 +09:00

1076 lines
36 KiB
C

/*
Copyright 2012,2013 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "host.h"
#include "timer.h"
#include "keymap.h"
#include "keycode.h"
#include "keyboard.h"
#include "mousekey.h"
#include "command.h"
#include "util.h"
#include "debug.h"
#include "led.h"
#include "layer_switch.h"
#include "action_oneshot.h"
#include "action_macro.h"
#include "action.h"
static void process_action(keyrecord_t *record);
static void debug_event(keyevent_t event);
static void debug_record(keyrecord_t record);
static void debug_action(action_t action);
#ifndef NO_ACTION_TAPPING
/*
* Tapping
*/
/* period of tapping(ms) */
#ifndef TAPPING_TERM
#define TAPPING_TERM 200
#endif
/* tap count needed for toggling a feature */
#ifndef TAPPING_TOGGLE
#define TAPPING_TOGGLE 5
#endif
/* stores a key event of current tap. */
static keyrecord_t tapping_key = {};
#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)
/*
* Waiting buffer
*
* stores key events waiting for settling current tap.
*/
#define WAITING_BUFFER_SIZE 8
static keyrecord_t waiting_buffer[WAITING_BUFFER_SIZE] = {};
/* point to empty cell to enq */
static uint8_t waiting_buffer_head = 0;
/* point to the oldest data cell to deq */
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);
#if TAPPING_TERM >= 500
static bool waiting_buffer_typed(keyevent_t event);
#endif
static void waiting_buffer_scan_tap(void);
static void debug_tapping_key(void);
static void debug_waiting_buffer(void);
#endif
void action_exec(keyevent_t event)
{
if (!IS_NOEVENT(event)) {
debug("\n---- action_exec: start -----\n");
debug("EVENT: "); debug_event(event); debug("\n");
}
keyrecord_t record = { .event = event };
#ifndef NO_ACTION_TAPPING
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(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(event)) {
debug("\n");
}
#else
process_action(&record);
if (!IS_NOEVENT(record.event)) {
debug("processed: "); debug_record(record); debug("\n");
}
#endif
}
static void process_action(keyrecord_t *record)
{
keyevent_t event = record->event;
uint8_t tap_count = record->tap.count;
if (IS_NOEVENT(event)) { return; }
action_t action = layer_switch_get_action(event.key);
debug("ACTION: "); debug_action(action);
debug(" overlays: "); overlay_debug();
debug(" keymaps: "); keymap_debug();
debug(" default_layer: "); debug_dec(default_layer); debug("\n");
switch (action.kind.id) {
/* Key and Mods */
case ACT_LMODS:
case ACT_RMODS:
{
uint8_t mods = (action.kind.id == ACT_LMODS) ? action.key.mods :
action.key.mods<<4;
if (event.pressed) {
uint8_t tmp_mods = host_get_mods();
if (mods) {
host_add_mods(mods);
host_send_keyboard_report();
}
register_code(action.key.code);
if (mods && action.key.code) {
host_set_mods(tmp_mods);
host_send_keyboard_report();
}
} else {
if (mods && !action.key.code) {
host_del_mods(mods);
host_send_keyboard_report();
}
unregister_code(action.key.code);
}
}
break;
#ifndef NO_ACTION_TAPPING
case ACT_LMODS_TAP:
case ACT_RMODS_TAP:
{
uint8_t mods = (action.kind.id == ACT_LMODS_TAP) ? action.key.mods :
action.key.mods<<4;
switch (action.layer.code) {
#ifndef NO_ACTION_ONESHOT
case 0x00:
// Oneshot modifier
if (event.pressed) {
if (tap_count == 0) {
debug("MODS_TAP: Oneshot: add_mods\n");
add_mods(mods);
}
else if (tap_count == 1) {
debug("MODS_TAP: Oneshot: start\n");
oneshot_start(mods);
}
else if (tap_count == TAPPING_TOGGLE) {
debug("MODS_TAP: Oneshot: toggle\n");
oneshot_toggle();
}
else {
debug("MODS_TAP: Oneshot: cancel&add_mods\n");
// double tap cancels oneshot and works as normal modifier.
oneshot_cancel();
add_mods(mods);
}
} else {
if (tap_count == 0) {
debug("MODS_TAP: Oneshot: cancel/del_mods\n");
// cancel oneshot on hold
oneshot_cancel();
del_mods(mods);
}
else if (tap_count == 1) {
debug("MODS_TAP: Oneshot: del_mods\n");
// retain Oneshot
del_mods(mods);
}
else {
debug("MODS_TAP: Oneshot: del_mods\n");
// cancel Mods
del_mods(mods);
}
}
break;
#endif
default:
if (event.pressed) {
if (tap_count > 0) {
if (waiting_buffer_has_anykey_pressed()) {
debug("MODS_TAP: Tap: Cancel: add_mods\n");
// ad hoc: set 0 to cancel tap
record->tap.count = 0;
add_mods(mods);
} else {
debug("MODS_TAP: Tap: register_code\n");
register_code(action.key.code);
}
} else {
debug("MODS_TAP: No tap: add_mods\n");
add_mods(mods);
}
} else {
if (tap_count > 0) {
debug("MODS_TAP: Tap: unregister_code\n");
unregister_code(action.key.code);
} else {
debug("MODS_TAP: No tap: add_mods\n");
del_mods(mods);
}
}
break;
}
}
break;
#endif
#ifdef EXTRAKEY_ENABLE
/* other HID usage */
case ACT_USAGE:
switch (action.usage.page) {
case PAGE_SYSTEM:
if (event.pressed) {
host_system_send(action.usage.code);
} else {
host_system_send(0);
}
break;
case PAGE_CONSUMER:
if (event.pressed) {
host_consumer_send(action.usage.code);
} else {
host_consumer_send(0);
}
break;
}
break;
#endif
#ifdef MOUSEKEY_ENABLE
/* Mouse key */
case ACT_MOUSEKEY:
if (event.pressed) {
mousekey_on(action.key.code);
mousekey_send();
} else {
mousekey_off(action.key.code);
mousekey_send();
}
break;
#endif
#ifndef NO_ACTION_KEYMAP
case ACT_KEYMAP:
switch (action.layer.code) {
/* Keymap clear */
case OP_RESET:
switch (action.layer.val & 0x03) {
case 0:
// NOTE: reserved
overlay_clear();
keymap_clear();
break;
case ON_PRESS:
if (event.pressed) {
overlay_clear();
keymap_clear();
}
break;
case ON_RELEASE:
if (!event.pressed) {
overlay_clear();
keymap_clear();
}
break;
case ON_BOTH:
overlay_clear();
keymap_clear();
break;
/* NOTE: 4-7 rserved */
}
break;
/* Keymap Reset default layer */
case (OP_RESET | ON_PRESS):
if (event.pressed) {
default_layer_set(action.layer.val);
}
break;
case (OP_RESET | ON_RELEASE):
if (!event.pressed) {
default_layer_set(action.layer.val);
}
break;
case (OP_RESET | ON_BOTH):
default_layer_set(action.layer.val);
break;
/* Keymap Bit invert */
case OP_INV:
/* with tap toggle */
if (event.pressed) {
if (tap_count < TAPPING_TOGGLE) {
debug("KEYMAP_INV: tap toggle(press).\n");
keymap_invert(action.layer.val);
}
} else {
if (tap_count <= TAPPING_TOGGLE) {
debug("KEYMAP_INV: tap toggle(release).\n");
keymap_invert(action.layer.val);
}
}
break;
case (OP_INV | ON_PRESS):
if (event.pressed) {
keymap_invert(action.layer.val);
}
break;
case (OP_INV | ON_RELEASE):
if (!event.pressed) {
keymap_invert(action.layer.val);
}
break;
case (OP_INV | ON_BOTH):
keymap_invert(action.layer.val);
break;
/* Keymap Bit on */
case OP_ON:
if (event.pressed) {
keymap_on(action.layer.val);
} else {
keymap_off(action.layer.val);
}
break;
case (OP_ON | ON_PRESS):
if (event.pressed) {
keymap_on(action.layer.val);
}
break;
case (OP_ON | ON_RELEASE):
if (!event.pressed) {
keymap_on(action.layer.val);
}
break;
case (OP_ON | ON_BOTH):
keymap_on(action.layer.val);
break;
/* Keymap Bit off */
case OP_OFF:
if (event.pressed) {
keymap_off(action.layer.val);
} else {
keymap_on(action.layer.val);
}
break;
case (OP_OFF | ON_PRESS):
if (event.pressed) {
keymap_off(action.layer.val);
}
break;
case (OP_OFF | ON_RELEASE):
if (!event.pressed) {
keymap_off(action.layer.val);
}
break;
case (OP_OFF | ON_BOTH):
keymap_off(action.layer.val);
break;
/* Keymap Bit set */
case OP_SET:
if (event.pressed) {
keymap_set(action.layer.val);
} else {
keymap_clear();
}
break;
case (OP_SET | ON_PRESS):
if (event.pressed) {
keymap_set(action.layer.val);
}
break;
case (OP_SET | ON_RELEASE):
if (!event.pressed) {
keymap_set(action.layer.val);
}
break;
case (OP_SET | ON_BOTH):
keymap_set(action.layer.val);
break;
/* Keymap Bit invert with tap key */
default:
if (event.pressed) {
if (tap_count > 0) {
debug("KEYMAP_TAP_KEY: Tap: register_code\n");
register_code(action.layer.code);
} else {
debug("KEYMAP_TAP_KEY: No tap: On on press\n");
keymap_on(action.layer.val);
}
} else {
if (tap_count > 0) {
debug("KEYMAP_TAP_KEY: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("KEYMAP_TAP_KEY: No tap: Off on release\n");
keymap_off(action.layer.val);
}
}
break;
}
break;
#endif
#ifndef NO_ACTION_OVERLAY
case ACT_OVERLAY:
switch (action.layer.code) {
// Overlay Invert bit4
case OP_INV4 | 0:
if (action.layer.val == 0) {
// NOTE: reserved for future use
overlay_clear();
} else {
overlay_set(overlay_stat ^ action.layer.val);
}
break;
case OP_INV4 | 1:
if (action.layer.val == 0) {
// on pressed
if (event.pressed) overlay_clear();
} else {
overlay_set(overlay_stat ^ action.layer.val<<4);
}
break;
case OP_INV4 | 2:
if (action.layer.val == 0) {
// on released
if (!event.pressed) overlay_clear();
} else {
overlay_set(overlay_stat ^ action.layer.val<<8);
}
break;
case OP_INV4 | 3:
if (action.layer.val == 0) {
// on both
overlay_clear();
} else {
overlay_set(overlay_stat ^ action.layer.val<<12);
}
break;
/* Overlay Bit invert */
case OP_INV:
/* with tap toggle */
if (event.pressed) {
if (tap_count < TAPPING_TOGGLE) {
debug("OVERLAY_INV: tap toggle(press).\n");
overlay_invert(action.layer.val);
}
} else {
if (tap_count <= TAPPING_TOGGLE) {
debug("OVERLAY_INV: tap toggle(release).\n");
overlay_invert(action.layer.val);
}
}
break;
case (OP_INV | ON_PRESS):
if (event.pressed) {
overlay_invert(action.layer.val);
}
break;
case (OP_INV | ON_RELEASE):
if (!event.pressed) {
overlay_invert(action.layer.val);
}
break;
case (OP_INV | ON_BOTH):
overlay_invert(action.layer.val);
break;
/* Overlay Bit on */
case OP_ON:
if (event.pressed) {
overlay_on(action.layer.val);
} else {
overlay_off(action.layer.val);
}
break;
case (OP_ON | ON_PRESS):
if (event.pressed) {
overlay_on(action.layer.val);
}
break;
case (OP_ON | ON_RELEASE):
if (!event.pressed) {
overlay_on(action.layer.val);
}
break;
case (OP_ON | ON_BOTH):
overlay_on(action.layer.val);
break;
/* Overlay Bit off */
case OP_OFF:
if (event.pressed) {
overlay_off(action.layer.val);
} else {
overlay_on(action.layer.val);
}
break;
case (OP_OFF | ON_PRESS):
if (event.pressed) {
overlay_off(action.layer.val);
}
break;
case (OP_OFF | ON_RELEASE):
if (!event.pressed) {
overlay_off(action.layer.val);
}
break;
case (OP_OFF | ON_BOTH):
overlay_off(action.layer.val);
break;
/* Overlay Bit set */
case OP_SET:
if (event.pressed) {
overlay_move(action.layer.val);
} else {
overlay_clear();
}
break;
case (OP_SET | ON_PRESS):
if (event.pressed) {
overlay_move(action.layer.val);
}
break;
case (OP_SET | ON_RELEASE):
if (!event.pressed) {
overlay_move(action.layer.val);
}
break;
case (OP_SET | ON_BOTH):
overlay_move(action.layer.val);
break;
/* Overlay Bit invert with tap key */
default:
if (event.pressed) {
if (tap_count > 0) {
debug("OVERLAY_TAP_KEY: Tap: register_code\n");
register_code(action.layer.code);
} else {
debug("OVERLAY_TAP_KEY: No tap: On on press\n");
overlay_on(action.layer.val);
}
} else {
if (tap_count > 0) {
debug("OVERLAY_TAP_KEY: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("OVERLAY_TAP_KEY: No tap: Off on release\n");
overlay_off(action.layer.val);
}
}
break;
}
break;
#endif
/* Extentions */
#ifndef NO_ACTION_MACRO
case ACT_MACRO:
action_macro_play(action_get_macro(record, action.func.id, action.func.opt));
break;
#endif
case ACT_COMMAND:
break;
#ifndef NO_ACTION_FUNCTION
case ACT_FUNCTION:
action_function(record, action.func.id, action.func.opt);
break;
#endif
default:
break;
}
}
/*
* Utilities for actions.
*/
void register_code(uint8_t code)
{
if (code == KC_NO) {
return;
}
#ifdef CAPSLOCK_LOCKING_ENABLE
else if (KC_LOCKING_CAPS == code) {
#ifdef CAPSLOCK_LOCKING_RESYNC_ENABLE
// Resync: ignore if caps lock already is on
if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) return;
#endif
host_add_key(KC_CAPSLOCK);
host_send_keyboard_report();
host_del_key(KC_CAPSLOCK);
host_send_keyboard_report();
}
#endif
else if IS_KEY(code) {
// TODO: should push command_proc out of this block?
if (command_proc(code)) return;
#ifndef NO_ACTION_ONESHOT
if (oneshot_state.mods && !oneshot_state.disabled) {
uint8_t tmp_mods = host_get_mods();
host_add_mods(oneshot_state.mods);
host_add_key(code);
host_send_keyboard_report();
host_set_mods(tmp_mods);
oneshot_cancel();
} else
#endif
{
host_add_key(code);
host_send_keyboard_report();
}
}
else if IS_MOD(code) {
host_add_mods(MOD_BIT(code));
host_send_keyboard_report();
}
}
void unregister_code(uint8_t code)
{
if (code == KC_NO) {
return;
}
#ifdef CAPSLOCK_LOCKING_ENABLE
else if (KC_LOCKING_CAPS == code) {
#ifdef CAPSLOCK_LOCKING_RESYNC_ENABLE
// Resync: ignore if caps lock already is off
if (!(host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK))) return;
#endif
host_add_key(KC_CAPSLOCK);
host_send_keyboard_report();
host_del_key(KC_CAPSLOCK);
host_send_keyboard_report();
}
#endif
else if IS_KEY(code) {
host_del_key(code);
host_send_keyboard_report();
}
else if IS_MOD(code) {
host_del_mods(MOD_BIT(code));
host_send_keyboard_report();
}
}
void add_mods(uint8_t mods)
{
if (mods) {
host_add_mods(mods);
host_send_keyboard_report();
}
}
void del_mods(uint8_t mods)
{
if (mods) {
host_del_mods(mods);
host_send_keyboard_report();
}
}
void set_mods(uint8_t mods)
{
host_set_mods(mods);
host_send_keyboard_report();
}
void clear_keyboard(void)
{
host_clear_mods();
clear_keyboard_but_mods();
}
void clear_keyboard_but_mods(void)
{
host_clear_keys();
host_send_keyboard_report();
#ifdef MOUSEKEY_ENABLE
mousekey_clear();
mousekey_send();
#endif
#ifdef EXTRAKEY_ENABLE
host_system_send(0);
host_consumer_send(0);
#endif
}
bool sending_anykey(void)
{
return (host_has_anykey() || host_mouse_in_use() ||
host_last_sysytem_report() || host_last_consumer_report());
}
bool is_tap_key(key_t key)
{
action_t action = layer_switch_get_action(key);
switch (action.kind.id) {
case ACT_LMODS_TAP:
case ACT_RMODS_TAP:
return true;
case ACT_KEYMAP:
case ACT_OVERLAY:
switch (action.layer.code) {
case 0x04 ... 0xEF: /* tap key */
case OP_INV:
return true;
default:
return false;
}
case ACT_MACRO:
case ACT_FUNCTION:
if (action.func.opt & FUNC_TAP) { return true; }
return false;
}
return false;
}
/*
* debug print
*/
static void debug_event(keyevent_t event)
{
debug_hex16((event.key.row<<8) | event.key.col);
if (event.pressed) debug("d("); else debug("u(");
debug_dec(event.time); debug(")");
}
static void debug_record(keyrecord_t record)
{
debug_event(record.event); debug(":"); debug_dec(record.tap.count);
if (record.tap.interrupted) debug("-");
}
static void debug_action(action_t action)
{
switch (action.kind.id) {
case ACT_LMODS: debug("ACT_LMODS"); break;
case ACT_RMODS: debug("ACT_RMODS"); break;
case ACT_LMODS_TAP: debug("ACT_LMODS_TAP"); break;
case ACT_RMODS_TAP: debug("ACT_RMODS_TAP"); break;
case ACT_USAGE: debug("ACT_USAGE"); break;
case ACT_MOUSEKEY: debug("ACT_MOUSEKEY"); break;
case ACT_KEYMAP: debug("ACT_KEYMAP"); break;
case ACT_OVERLAY: debug("ACT_OVERLAY"); break;
case ACT_MACRO: debug("ACT_MACRO"); break;
case ACT_COMMAND: debug("ACT_COMMAND"); break;
case ACT_FUNCTION: debug("ACT_FUNCTION"); break;
default: debug("UNKNOWN"); break;
}
debug("[");
debug_hex4(action.kind.param>>8);
debug(":");
debug_hex8(action.kind.param & 0xff);
debug("]");
}
#ifndef NO_ACTION_TAPPING
/* 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. */
static 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;
tapping_key.tap.interrupted = (waiting_buffer_has_anykey_pressed() ? true : false);
debug_tapping_key();
process_action(&tapping_key);
// enqueue
keyp->tap = tapping_key.tap;
return false;
}
#if TAPPING_TERM >= 500
/* This can prevent from typing some tap keys in a row at a time. */
else if (!event.pressed && waiting_buffer_typed(event)) {
// other key typed. not tap.
debug("Tapping: End. No tap. Interfered by typing key\n");
process_action(&tapping_key);
tapping_key = (keyrecord_t){};
debug_tapping_key();
// enqueue
return false;
}
#endif
else {
// other key events shall be enq'd till tapping state settles.
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_action(keyp);
tapping_key = *keyp;
debug_tapping_key();
return true;
}
else if (is_tap_key(keyp->event.key) && event.pressed) {
if (tapping_key.tap.count > 1) {
debug("Tapping: Start new tap with releasing last tap(>1).\n");
// unregister key
process_action(&(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(keyp->event)) {
debug("Tapping: key event while last tap(>0).\n");
}
process_action(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_action(&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_action(keyp);
tapping_key = (keyrecord_t){};
return true;
}
else if (is_tap_key(keyp->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_action(&(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(keyp->event)) {
debug("Tapping: key event while last timeout tap(>0).\n");
}
process_action(keyp);
return true;
}
}
}
} else if (IS_TAPPING_RELEASED()) {
if (WITHIN_TAPPING_TERM(event)) {
if (tapping_key.tap.count > 0 && IS_TAPPING_KEY(event.key) && event.pressed) {
// sequential tap.
keyp->tap = tapping_key.tap;
keyp->tap.count += 1;
debug("Tapping: Tap press("); debug_dec(keyp->tap.count); debug(")\n");
process_action(keyp);
tapping_key = *keyp;
debug_tapping_key();
return true;
} else if (event.pressed && 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 {
if (!IS_NOEVENT(keyp->event)) debug("Tapping: other key just after tap.\n");
process_action(keyp);
return true;
}
} else {
// 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 satate
else {
if (event.pressed && is_tap_key(event.key)) {
debug("Tapping: Start(Press tap key).\n");
tapping_key = *keyp;
waiting_buffer_scan_tap();
debug_tapping_key();
return true;
} else {
process_action(keyp);
return true;
}
}
}
/*
* Waiting buffer
*/
static 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;
}
static void waiting_buffer_clear(void)
{
waiting_buffer_head = 0;
waiting_buffer_tail = 0;
}
#if TAPPING_TERM >= 500
static 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;
}
#endif
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;
}
/* scan buffer for tapping */
static 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_action(&tapping_key);
debug("waiting_buffer_scan_tap: found at ["); debug_dec(i); debug("]\n");
debug_waiting_buffer();
return;
}
}
}
/*
* debug print
*/
static void debug_tapping_key(void)
{
debug("TAPPING_KEY="); debug_record(tapping_key); debug("\n");
}
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