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qmk_firmware/common/action.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"
static void process(keyevent_t event);
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static void register_code(uint8_t code);
static void unregister_code(uint8_t code);
static void add_mods(uint8_t mods);
static void del_mods(uint8_t mods);
static void set_mods(uint8_t mods);
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static void clear_keyboard(void);
static void clear_keyboard_but_mods(void);
static bool sending_anykey(void);
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static void layer_switch(uint8_t new_layer);
/* tap */
#define TAP_TIME 200
static keyevent_t last_event = {};
static uint8_t tap_count = 0;
/* layer */
uint8_t default_layer = 0;
uint8_t current_layer = 0;
static keyrecord_t tapping_key = {};
// time 0 means no event.
#define IS_TAPPING (tapping_key.event.time != 0)
/* TODO:
#define IS_TAPPING_KEY(key) (tapping_key.event.time != 0 && KEYEQ(tapping_key.event.key, key))
*/
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/* waiting keys buffer */
#define WAITING_KEYS_BUFFER 3
static keyrecord_t waiting_keys[WAITING_KEYS_BUFFER] = {};
// TODO: double buffer?
static keyrecord_t waiting_keys0[WAITING_KEYS_BUFFER] = {};
static keyrecord_t waiting_keys1[WAITING_KEYS_BUFFER] = {};
static uint8_t waiting_keys_head = 0;
static bool waiting_keys_enqueue(keyevent_t event)
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{
debug("waiting_keys["); debug_dec(waiting_keys_head); debug("] = ");
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debug_hex16(event.key.raw); debug("\n");
if (waiting_keys_head < WAITING_KEYS_BUFFER) {
waiting_keys[waiting_keys_head++] = (keyrecord_t){ .event = event,
.mods = host_get_mods() };
} else {
return true;
}
}
static void waiting_keys_clear(void)
{
waiting_keys_head = 0;
}
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static bool waiting_keys_has(key_t key)
{
for (uint8_t i = 0; i < waiting_keys_head; i++) {
if KEYEQ(key, waiting_keys[i].event.key) return true;
}
return false;
}
static void waiting_keys_process_in_current_layer(void)
{
// TODO: in case of including layer key in waiting keys
for (uint8_t i = 0; i < waiting_keys_head; i++) {
debug("waiting_keys_process_in_current_layer["); debug_dec(i); debug("]\n");
process(waiting_keys[i].event);
}
waiting_keys_clear();
}
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void action_exec(keyevent_t event)
{
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if (!IS_NOEVENT(event)) {
debug("event: "); debug_hex16(event.key.raw);
debug("[");
if (event.pressed) debug("down"); else debug("up");
debug("]\n");
}
if (IS_TAPPING) {
/* when tap time elapses or waiting key is released */
if ((timer_elapsed(tapping_key.event.time) > TAP_TIME) ||
(!event.pressed && waiting_keys_has(event.key))) {
// TODO process tapping_key: layer swich, modifier, ...
// action is needed?
debug("notap: process tapping_key.\n");
process(tapping_key.event);
/* Process waiting keys in new layer */
waiting_keys_process_in_current_layer();
}
/* when tapping key is released within tap time */
else if (!event.pressed && KEYEQ(event.key, tapping_key.event.key)) {
/* tap key down */
debug("tap("); debug_hex8(tap_count); debug(")[tapping_key](register): "); debug_hex8(tapping_key.action.layer.code); debug("\n");
register_code(tapping_key.action.layer.code);
tapping_key = (keyrecord_t){};
/* process waiting keys */
waiting_keys_process_in_current_layer();
}
}
// not real event. event just to handle time out of tapping key.
if (IS_NOEVENT(event)) {
return;
}
/* count up tap when key is up */
// key: d u d u d
// tap: 0 1 1 2 2
// key: u d u d u
// tap: 0 0 1 1 2
if (KEYEQ(event.key, last_event.key) && timer_elapsed(last_event.time) <= TAP_TIME) {
if (!event.pressed) tap_count++;
} else {
tap_count = 0;
}
/* store key events while tapping */
if (IS_TAPPING) {
// TODO: action is needed?
waiting_keys_enqueue(event);
} else {
process(event);
}
/* last event */
last_event = event;
}
static void process(keyevent_t event)
{
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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:
// |pressed |released
// --------------+---------------------------------+------------
// key |down(key) |up(key)
// mods |add(mods) |del(mods)
// key with mods |add(mods), down(key), unset(mods)|up(key)
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if (event.pressed) {
uint8_t tmp_mods = host_get_mods();
if (action.key.mods) {
host_add_mods(action.key.mods);
host_send_keyboard_report();
}
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register_code(action.key.code);
if (action.key.mods && action.key.code) {
host_set_mods(tmp_mods);
host_send_keyboard_report();
}
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} else {
if (action.key.mods && !action.key.code) {
host_del_mods(action.key.mods);
host_send_keyboard_report();
}
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unregister_code(action.key.code);
}
break;
case ACT_RMODS:
// |pressed |released
// --------------+---------------------------------+------------
// key |down(key) |up(key)
// mods |add(mods) |del(mods)
// key with mods |add(mods), down(key), unset(mods)|up(key)
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if (event.pressed) {
uint8_t tmp_mods = host_get_mods();
if (action.key.mods) {
host_add_mods(action.key.mods<<4);
host_send_keyboard_report();
}
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register_code(action.key.code);
if (action.key.mods && action.key.code) {
host_set_mods(tmp_mods);
host_send_keyboard_report();
}
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} else {
if (action.key.mods && !action.key.code) {
host_del_mods(action.key.mods<<4);
host_send_keyboard_report();
}
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unregister_code(action.key.code);
}
break;
case ACT_LMODS_TAP:
if (event.pressed) {
if (tap_count == 0) {
if (host_has_anykey()) {
// This key is a modifier essentially.
// Prioritize mods when key jam or rollover
add_mods(action.key.mods);
} else {
if (IS_TAPPING && KEYEQ(tapping_key.event.key, event.key)) {
// no tapping
add_mods(action.key.mods);
tapping_key = (keyrecord_t){};
} else {
debug("tapping lmods("); debug_hex8(action.key.mods); debug(")\n");
tapping_key = (keyrecord_t){
.event = event,
.action = action,
.mods = host_get_mods()
};
}
}
} else {
// pressed after tapping
debug("tap("); debug_hex(tap_count); debug(")[lmods](register): "); debug_hex8(action.key.code); debug("\n");
register_code(action.key.code);
}
} else {
if (tap_count == 0) {
debug("tap(00)[lmods](del_mods): "); debug_hex8(action.key.mods); debug("\n");
del_mods(action.key.mods);
} else if (tap_count == 1) {
debug("tap(01)[lmods](del_mods/unregister): "); debug_hex8(action.key.mods); debug(" "); debug_hex8(action.key.code); debug("\n");
del_mods(action.key.mods);
unregister_code(action.key.code);
} else {
debug("tap("); debug_hex(tap_count); debug(")[lmods](unregister): "); debug_hex8(action.key.code); debug("\n");
unregister_code(action.key.code);
}
}
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break;
case ACT_RMODS_TAP:
if (event.pressed) {
if (tap_count == 0) {
if (host_has_anykey()) {
// This key is a modifier essentially.
// Prioritize mods when key jam or rollover
add_mods(action.key.mods<<4);
} else {
if (IS_TAPPING && KEYEQ(tapping_key.event.key, event.key)) {
// no tapping
add_mods(action.key.mods<<4);
tapping_key = (keyrecord_t){};
} else {
debug("tapping rmods("); debug_hex8(action.key.mods); debug(")\n");
tapping_key = (keyrecord_t){
.event = event,
.action = action,
.mods = host_get_mods()
};
}
}
} else {
// pressed after tapping
debug("tap("); debug_hex(tap_count); debug(")[rmods](register): "); debug_hex8(action.key.code); debug("\n");
register_code(action.key.code);
}
} else {
if (tap_count == 0) {
debug("tap(00)[rmods](del_mods): "); debug_hex8(action.key.mods); debug("\n");
del_mods(action.key.mods<<4);
} else if (tap_count == 1) {
debug("tap(01)[rmods](del_mods/unregister): "); debug_hex8(action.key.mods); debug(" "); debug_hex8(action.key.code); debug("\n");
del_mods(action.key.mods<<4);
unregister_code(action.key.code);
} else {
debug("tap("); debug_hex(tap_count); debug(")[rmods](unregister): "); debug_hex8(action.key.code); debug("\n");
unregister_code(action.key.code);
}
}
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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:
// TODO: tap toggle
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break;
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case 0xFF:
if (event.pressed) {
default_layer = action.layer.opt;
layer_switch(default_layer);
}
break;
default:
// with tap key
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if (event.pressed) {
if (tap_count == 0) {
if (host_has_anykey()) {
// This key is a normal key than a leyar key essentially.
// Prioritize 'tap key' when key jam or rollover
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register_code(action.layer.code);
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} else {
if (IS_TAPPING && KEYEQ(tapping_key.event.key, event.key)) {
layer_switch(action.layer.opt);
tapping_key = (keyrecord_t){};
} else {
debug("tapping layer("); debug_hex8(action.layer.opt); debug(")\n");
tapping_key = (keyrecord_t){
.event = event,
.action = action,
.mods = host_get_mods()
};
}
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}
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} else if (tap_count > 0) {
// pressed after tapping
debug("tap[layer](register): "); debug_hex(tap_count); debug("\n");
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register_code(action.layer.code);
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}
} else {
// released after tapping
debug("tap[layer](unregister): "); debug_hex(tap_count); debug("\n");
unregister_code(action.layer.code);
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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:
// Ignored. LAYER_RELEASED with tap toggle is invalid action.
break;
case 0xFF:
if (!event.pressed) {
default_layer = action.layer.opt;
layer_switch(default_layer);
}
break;
default:
// Ignored. LAYER_RELEASED with tap key is invalid action.
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:
// TODO: tap toggle
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:
// TODO: see ACT_LAYER_PRESSED code
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// with tap key
if (event.pressed) {
if (tap_count == 0) {
if (host_has_anykey()) {
register_code(action.layer.code);
} else {
tapping_key = (keyrecord_t){
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.event = event,
.action = action,
.mods = keyboard_report->mods
};
}
} else if (tap_count > 0) {
debug("tap[layer_bit](register): "); debug_hex(tap_count); debug("\n");
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register_code(action.layer.code);
}
} else {
if (tap_count == 0) {
// no tap
layer_switch(current_layer & ~action.layer.opt);
} else if (tap_count == 1) {
// tap
register_code(action.layer.code);
}
unregister_code(action.layer.code);
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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:
// TODO: tap toggle
break;
case 0xFF:
if (event.pressed) {
default_layer = current_layer;
layer_switch(default_layer);
}
break;
default:
// TODO: tap key
break;
}
break;
case 0x01:
// set default layer when released
switch (action.layer.code) {
case 0x00:
if (!event.pressed) {
layer_switch(default_layer);
}
break;
case 0xFF:
if (!event.pressed) {
default_layer = current_layer;
layer_switch(default_layer);
}
break;
case 0xF0:
default:
// Ignore tap.
if (!event.pressed) {
layer_switch(default_layer);
}
break;
}
break;
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}
break;
/* Extentions */
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case ACT_MACRO:
case ACT_COMMAND:
case ACT_FUNCTION:
default:
break;
}
}
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static void register_code(uint8_t code)
{
if (code == KC_NO) {
return;
}
else if IS_KEY(code) {
// TODO: should push command_proc out of this block?
if (!command_proc(code)) {
host_add_key(code);
host_send_keyboard_report();
}
}
else if IS_MOD(code) {
host_add_mods(MOD_BIT(code));
host_send_keyboard_report();
}
}
static void unregister_code(uint8_t code)
{
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();
}
}
static void add_mods(uint8_t mods)
{
if (mods) {
host_add_mods(mods);
host_send_keyboard_report();
}
}
static void del_mods(uint8_t mods)
{
if (mods) {
host_del_mods(mods);
host_send_keyboard_report();
}
}
static void set_mods(uint8_t mods)
{
host_set_mods(mods);
host_send_keyboard_report();
}
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static void clear_keyboard(void)
{
host_clear_mods();
clear_keyboard_but_mods();
}
static 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
}
static bool sending_anykey(void)
{
return (host_has_anykey() || host_mouse_in_use() ||
host_last_sysytem_report() || host_last_consumer_report());
}
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static void layer_switch(uint8_t new_layer)
{
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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}
}