qmk_firmware/common/action.c

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C
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#include "host.h"
#include "timer.h"
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#include "keymap.h"
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#include "keycode.h"
#include "keyboard.h"
#include "mousekey.h"
#include "command.h"
#include "util.h"
#include "debug.h"
#include "action.h"
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static void process(keyrecord_t *record);
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// TODO
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/* layer */
uint8_t default_layer = 0;
uint8_t current_layer = 0;
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/* tap term(ms) */
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#define TAP_TERM 200
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/* number of tap which fires toggle feature */
#define TAP_TOGGLE 5
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/* This counts up when tap occurs */
uint8_t tap_count = 0;
keyevent_t tapping_event = {};
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keyrecord_t tapping_key = {};
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/* TAPPING: This indicates that whether tap or not is not decided yet. */
// NOTE: keyevent_t.time 0 means no event.
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#define IS_TAPPING() (tapping_key.event.time != 0)
#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_TAP_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < TAP_TERM)
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/* waiting keys buffer */
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#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 waiting_buffer_enq(keyrecord_t record)
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{
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if (IS_NOEVENT(record.event)) {
return true;
}
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if ((waiting_buffer_head + 1) % WAITING_BUFFER_SIZE == waiting_buffer_tail) {
debug("waiting_buffer_enq: Over flow.\n");
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return false;
}
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debug("waiting_buffer_enq["); debug_dec(waiting_buffer_head); debug("] = ");
debug_hex16(record.event.key.raw); debug("\n");
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waiting_buffer[waiting_buffer_head] = record;
waiting_buffer_head = (waiting_buffer_head + 1) % WAITING_BUFFER_SIZE;
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return true;
}
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/*
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static keyrecord_t waiting_buffer_deq(void)
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{
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if (waiting_buffer_head == waiting_buffer_tail) {
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return (keyrecord_t){}; // ???
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}
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uint8_t last_tail = waiting_buffer_tail;
waiting_buffer_tail = waiting_buffer_tail + 1 % WAITING_BUFFER_SIZE;
return waiting_buffer[last_tail];
}
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static bool waiting_buffer_is_empty(void)
{
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return (waiting_buffer_head == waiting_buffer_tail);
}
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*/
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static void waiting_buffer_clear(void)
{
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waiting_buffer_head = 0;
waiting_buffer_tail = 0;
}
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static bool waiting_buffer_typed(keyevent_t event)
{
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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;
}
}
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return false;
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}
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static bool waiting_buffer_has_anykey_pressed(void)
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{
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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;
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}
return false;
}
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/* Oneshot modifier
*
* Problem: Want to capitalize like 'The' but the result tends to be 'THe'.
* Solution: Oneshot modifier have its effect on only one key coming next.
* Tap Shift, then type 't', 'h' and 'e'. Not need to hold Shift key.
*
* Hold: works as normal modifier.
* Tap: one shot modifier.
* 2 Tap: cancel one shot modifier.
* 5-Tap: toggles enable/disable oneshot feature.
*/
static struct {
uint8_t mods;
uint8_t time;
bool ready;
bool disabled;
} oneshot_state;
static void oneshot_start(uint8_t mods, uint16_t time)
{
oneshot_state.mods = mods;
oneshot_state.time = time;
oneshot_state.ready = true;
}
static void oneshot_cancel(void)
{
oneshot_state.mods = 0;
oneshot_state.time = 0;
oneshot_state.ready = false;
}
static void oneshot_toggle(void)
{
oneshot_state.disabled = !oneshot_state.disabled;
}
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/*
* Rule to judge tap:
* Tap key is typed(pressed and released) within TAP_TERM
* without interfaring by typing other key.
*/
/* return true when key event is processed. */
static bool process_tap(keyrecord_t *keyp)
{
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keyevent_t event = keyp->event;
// if tapping
if (IS_TAPPING_PRESSED()) {
if (WITHIN_TAP_TERM(event)) {
if (tapping_key.tap_count == 0) {
if (IS_TAPPING_KEY(event.key) && !event.pressed) {
// first tap!
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debug("Tapping: First tap.\n");
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tapping_key.tap_count = 1;
process(&tapping_key);
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// enqueue
keyp->tap_count = tapping_key.tap_count;
return false;
} else if (!event.pressed && waiting_buffer_typed(event)) {
// other key typed. not tap.
debug("Tapping: End(No tap. Interfered by typing key).\n");
process(&tapping_key);
tapping_key = (keyrecord_t){};
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// enqueue
return false;
} else {
// other key events shall be stored till tapping state settles.
return false;
}
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} else {
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if (IS_TAPPING_KEY(event.key) && !event.pressed) {
keyp->tap_count = tapping_key.tap_count;
debug("Tapping: tap release("); debug_dec(keyp->tap_count); debug(")\n");
tapping_key = *keyp;
return false;
}
else if (is_tap_key(keyp->event.key) && event.pressed) {
debug("Tapping: Start with forcing to release last tap.\n");
process(&(keyrecord_t){
.tap_count = tapping_key.tap_count,
.event.key = tapping_key.event.key,
.event.time = event.time,
.event.pressed = false
});
tapping_key = *keyp;
return false;
}
else {
if (!IS_NOEVENT(keyp->event)) debug("Tapping: key event while tap.\n");
process(keyp);
return true;
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}
}
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}
// not within TAP_TERM
else {
if (tapping_key.tap_count == 0) {
// timeout. not tap.
debug("Tapping: End. Not tap(time out).\n");
process(&tapping_key);
tapping_key = (keyrecord_t){};
return false;
} else {
if (IS_TAPPING_KEY(event.key) && !event.pressed) {
debug("Tapping: End. tap release.");
keyp->tap_count = tapping_key.tap_count;
process(keyp);
tapping_key = (keyrecord_t){};
return true;
} else {
// other key after tap time out.
process(keyp);
return true;
}
}
}
} else if (IS_TAPPING_RELEASED()) {
if (WITHIN_TAP_TERM(event)) {
if (tapping_key.tap_count > 0 && IS_TAPPING_KEY(event.key) && event.pressed) {
// sequential tap.
keyp->tap_count = tapping_key.tap_count + 1;
debug("Tapping: tap press("); debug_dec(keyp->tap_count); debug(")\n");
process(keyp);
tapping_key = *keyp;
return true;
} else if (event.pressed && is_tap_key(event.key)) {
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// Sequential tap can be interfered with other tap key.
debug("Tapping: Start with interfering other tap.\n");
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tapping_key = *keyp;
return true;
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} else {
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if (!IS_NOEVENT(keyp->event)) debug("Tapping: other key just after tap.\n");
process(keyp);
return true;
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}
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} else {
// timeout. no sequential tap.
debug("Tapping: End(Time out after releasing last tap).\n");
tapping_key = (keyrecord_t){};
process(keyp);
return true;
}
} else {
if (event.pressed && is_tap_key(event.key)) {
debug("Tapping: Start(Press tap key).\n");
tapping_key = *keyp;
return true;
} else {
process(keyp);
return true;
}
}
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}
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void action_exec(keyevent_t event)
{
if (!IS_NOEVENT(event)) {
debug("event: ");
debug_hex16(event.time); debug(": ");
debug_hex16(event.key.raw);
debug("[");
if (event.pressed) debug("down"); else debug("up");
debug("]\n");
}
keyrecord_t record = { .event = event };
// pre-process on tapping
if (process_tap(&record)) {
if (!IS_NOEVENT(record.event)) debug("processed.\n");
} else {
if (!IS_NOEVENT(record.event)) debug("enqueued.\n");
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// enqueue
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if (!waiting_buffer_enq(record)) {
// clear all in case of overflow.
clear_keyboard();
waiting_buffer_clear();
tapping_key = (keyrecord_t){};
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}
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}
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// process waiting_buffer
for (; waiting_buffer_tail != waiting_buffer_head; waiting_buffer_tail = (waiting_buffer_tail + 1) % WAITING_BUFFER_SIZE) {
if (process_tap(&waiting_buffer[waiting_buffer_tail])) {
debug("processed: waiting_buffer["); debug_dec(waiting_buffer_tail); debug("] = ");
debug_hex16(waiting_buffer[waiting_buffer_tail].event.key.raw); debug("\n");
} else {
break;
}
}
}
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static void process(keyrecord_t *record)
{
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keyevent_t event = record->event;
uint8_t tap_count = record->tap_count;
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if (IS_NOEVENT(event)) { return; }
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action_t action = keymap_get_action(current_layer, event.key.pos.row, event.key.pos.col);
debug("action: "); debug_hex16(action.code);
if (event.pressed) debug("[down]\n"); else debug("[up]\n");
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switch (action.kind.id) {
/* Key and Mods */
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case ACT_LMODS:
case ACT_RMODS:
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{
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);
}
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}
break;
case ACT_LMODS_TAP:
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case ACT_RMODS_TAP:
{
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uint8_t mods = (action.kind.id == ACT_LMODS_TAP) ? action.key.mods :
action.key.mods<<4;
switch (action.layer.code) {
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, event.time);
}
else if (tap_count == 5) {
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 {
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if (tap_count == 0) {
debug("MODS_TAP: Oneshot: cancel/del_mods\n");
// cancel oneshot by holding.
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);
}
}
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break;
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;
}
}
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break;
/* other HID usage */
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case ACT_USAGE:
#ifdef EXTRAKEY_ENABLE
switch (action.usage.page) {
case ACTION_USAGE_PAGE_SYSTEM:
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if (event.pressed) {
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host_system_send(action.usage.code);
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} else {
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host_system_send(0);
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}
break;
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case ACTION_USAGE_PAGE_CONSUMER:
if (event.pressed) {
host_consumer_send(action.usage.code);
} else {
host_consumer_send(0);
}
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break;
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}
#endif
break;
/* Mouse key */
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case ACT_MOUSEKEY:
#ifdef MOUSEKEY_ENABLE
if (event.pressed) {
mousekey_on(action.key.code);
mousekey_send();
} else {
mousekey_off(action.key.code);
mousekey_send();
}
#endif
break;
/* Layer key */
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case ACT_LAYER_PRESSED:
// layer action when pressed
switch (action.layer.code) {
case 0x00:
if (event.pressed) {
layer_switch(action.layer.opt);
}
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break;
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case 0xF0:
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// tap toggle
if (event.pressed) {
if (tap_count < TAP_TOGGLE) {
layer_switch(action.layer.opt);
}
} else {
if (tap_count >= TAP_TOGGLE) {
debug("LAYER_PRESSED: tap toggle.\n");
layer_switch(action.layer.opt);
}
}
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break;
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case 0xFF:
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// change default layer
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if (event.pressed) {
default_layer = action.layer.opt;
layer_switch(default_layer);
}
break;
default:
// with tap key
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if (event.pressed) {
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if (tap_count > 0) {
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debug("LAYER_PRESSED: Tap: register_code\n");
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register_code(action.layer.code);
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} else {
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debug("LAYER_PRESSED: No tap: layer_switch\n");
layer_switch(action.layer.opt);
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}
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} else {
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if (tap_count > 0) {
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debug("LAYER_PRESSED: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("LAYER_PRESSED: No tap: NO ACTION\n");
}
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}
break;
}
break;
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case ACT_LAYER_RELEASED:
switch (action.layer.code) {
case 0x00:
if (!event.pressed) {
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layer_switch(action.layer.opt);
}
break;
case 0xF0:
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// tap toggle
if (event.pressed) {
if (tap_count >= TAP_TOGGLE) {
debug("LAYER_RELEASED: tap toggle.\n");
layer_switch(action.layer.opt);
}
} else {
if (tap_count < TAP_TOGGLE) {
layer_switch(action.layer.opt);
}
}
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break;
case 0xFF:
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// change default layer
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if (!event.pressed) {
default_layer = action.layer.opt;
layer_switch(default_layer);
}
break;
default:
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// with tap key
if (event.pressed) {
if (tap_count > 0) {
debug("LAYER_RELEASED: Tap: register_code\n");
register_code(action.layer.code);
} else {
debug("LAYER_RELEASED: No tap: NO ACTION\n");
}
} else {
if (tap_count > 0) {
debug("LAYER_RELEASED: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("LAYER_RELEASED: No tap: layer_switch\n");
layer_switch(action.layer.opt);
}
}
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break;
}
break;
case ACT_LAYER_BIT:
switch (action.layer.code) {
case 0x00:
if (event.pressed) {
layer_switch(current_layer | action.layer.opt);
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} else {
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layer_switch(current_layer & ~action.layer.opt);
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}
break;
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case 0xF0:
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// tap toggle
if (event.pressed) {
if (tap_count < TAP_TOGGLE) {
debug("LAYER_BIT: tap toggle(press).\n");
layer_switch(current_layer | action.layer.opt);
}
} else {
if (tap_count < TAP_TOGGLE) {
debug("LAYER_BIT: tap toggle(release).\n");
layer_switch(current_layer & ~action.layer.opt);
} else {
debug("LAYER_BIT: tap toggle.\n");
layer_switch(current_layer | action.layer.opt);
}
}
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break;
case 0xFF:
// change default layer
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if (event.pressed) {
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default_layer = current_layer | action.layer.opt;
layer_switch(default_layer);
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} else {
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default_layer = current_layer & ~action.layer.opt;
layer_switch(default_layer);
}
break;
default:
// with tap key
if (event.pressed) {
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if (IS_TAPPING_KEY(event.key) && tap_count > 0) {
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debug("LAYER_BIT: Tap: register_code\n");
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register_code(action.layer.code);
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} else {
debug("LAYER_BIT: No tap: layer_switch(bit on)\n");
layer_switch(current_layer | action.layer.opt);
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}
} else {
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if (IS_TAPPING_KEY(event.key) && tap_count > 0) {
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debug("LAYER_BIT: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("LAYER_BIT: No tap: layer_switch(bit off)\n");
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layer_switch(current_layer & ~action.layer.opt);
}
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}
break;
}
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break;
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case ACT_LAYER_EXT:
switch (action.layer.opt) {
case 0x00:
// set default layer when pressed
switch (action.layer.code) {
case 0x00:
if (event.pressed) {
layer_switch(default_layer);
}
break;
case 0xF0:
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// tap toggle
if (event.pressed) {
if (tap_count < TAP_TOGGLE) {
layer_switch(default_layer);
}
} else {
if (tap_count >= TAP_TOGGLE) {
debug("LAYER_EXT_PRESSED: tap toggle.\n");
layer_switch(default_layer);
}
}
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break;
case 0xFF:
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// change default layer
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if (event.pressed) {
default_layer = current_layer;
layer_switch(default_layer);
}
break;
default:
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// with tap key
if (event.pressed) {
if (tap_count > 0) {
debug("LAYER_EXT_PRESSED: Tap: register_code\n");
register_code(action.layer.code);
} else {
debug("LAYER_EXT_PRESSED: No tap: layer_switch\n");
layer_switch(default_layer);
}
} else {
if (tap_count > 0) {
debug("LAYER_EXT_PRESSED: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("LAYER_EXT_PRESSED: No tap: NO ACTION\n");
}
}
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break;
}
break;
case 0x01:
// set default layer when released
switch (action.layer.code) {
case 0x00:
if (!event.pressed) {
layer_switch(default_layer);
}
break;
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case 0xF0:
// tap toggle
if (event.pressed) {
if (tap_count >= TAP_TOGGLE) {
debug("LAYER_EXT_RELEASED: tap toggle.\n");
layer_switch(default_layer);
}
} else {
if (tap_count < TAP_TOGGLE) {
layer_switch(default_layer);
}
}
break;
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case 0xFF:
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// change default layer
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if (!event.pressed) {
default_layer = current_layer;
layer_switch(default_layer);
}
break;
default:
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// with tap key
if (event.pressed) {
if (tap_count > 0) {
debug("LAYER_EXT_RELEASED: Tap: register_code\n");
register_code(action.layer.code);
} else {
debug("LAYER_EXT_RELEASED: No tap: NO ACTION\n");
}
} else {
if (tap_count > 0) {
debug("LAYER_EXT_RELEASED: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("LAYER_EXT_RELEASED: No tap: layer_switch\n");
layer_switch(default_layer);
}
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}
break;
}
break;
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}
break;
/* Extentions */
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case ACT_MACRO:
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break;
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case ACT_COMMAND:
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break;
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case ACT_FUNCTION:
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action_call_function(event, action.func.id);
break;
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default:
break;
}
}
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/*
* Utilities for actions.
*/
void register_code(uint8_t code)
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{
if (code == KC_NO) {
return;
}
else if IS_KEY(code) {
// TODO: should push command_proc out of this block?
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if (command_proc(code)) return;
if (oneshot_state.mods && oneshot_state.ready && !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_state.ready = false;
} else {
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host_add_key(code);
host_send_keyboard_report();
}
}
else if IS_MOD(code) {
host_add_mods(MOD_BIT(code));
host_send_keyboard_report();
}
}
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void unregister_code(uint8_t code)
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{
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();
}
}
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void add_mods(uint8_t mods)
{
if (mods) {
host_add_mods(mods);
host_send_keyboard_report();
}
}
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void del_mods(uint8_t mods)
{
if (mods) {
host_del_mods(mods);
host_send_keyboard_report();
}
}
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void set_mods(uint8_t mods)
{
host_set_mods(mods);
host_send_keyboard_report();
}
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void clear_keyboard(void)
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{
host_clear_mods();
clear_keyboard_but_mods();
}
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void clear_keyboard_but_mods(void)
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{
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
}
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bool sending_anykey(void)
{
return (host_has_anykey() || host_mouse_in_use() ||
host_last_sysytem_report() || host_last_consumer_report());
}
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void layer_switch(uint8_t new_layer)
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{
if (current_layer != new_layer) {
debug("Layer Switch: "); debug_hex(current_layer);
debug(" -> "); debug_hex(new_layer); debug("\n");
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current_layer = new_layer;
clear_keyboard_but_mods(); // To avoid stuck keys
// TODO: update mods with full scan of matrix? if modifier changes between layers
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}
}
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bool is_tap_key(key_t key)
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{
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action_t action = keymap_get_action(current_layer, key.pos.row, key.pos.col);
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switch (action.kind.id) {
case ACT_LMODS_TAP:
case ACT_RMODS_TAP:
return true;
case ACT_LAYER_PRESSED:
case ACT_LAYER_BIT:
switch (action.layer.code) {
case 0x00:
case 0xF1 ... 0xFF:
return false;
case 0xF0:
default:
return true;
}
return false;
case ACT_FUNCTION:
if (action.func.opt & 0x1) {
return true;
}
return false;
}
return false;
}