keychron_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 */
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#define TAP_TIME 300
/* This counts up when tap occurs */
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static uint8_t tap_count = 0;
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static bool is_tap_key(keyevent_t event)
{
action_t action = keymap_get_action(current_layer, event.key.pos.row, event.key.pos.col);
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;
}
return false;
}
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/* layer */
uint8_t default_layer = 0;
uint8_t current_layer = 0;
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static keyevent_t tapping_event = {};
/* TAPPING: This indicates that whether tap or not is not decided yet. */
// NOTE: keyevent_t.time 0 means no event.
#define IS_TAPPING(k) (tapping_event.time != 0 && KEYEQ(tapping_event.key, (k)))
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/* waiting keys buffer */
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#define WAITING_KEYS_BUFFER 8
static keyevent_t waiting_events[WAITING_KEYS_BUFFER] = {};
static uint8_t waiting_events_head = 0;
static bool waiting_events_enqueue(keyevent_t event)
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{
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if (IS_NOEVENT(event)) { return true; }
if (waiting_events_head < WAITING_KEYS_BUFFER) {
debug("waiting_events["); debug_dec(waiting_events_head); debug("] = ");
debug_hex16(event.key.raw); debug("\n");
waiting_events[waiting_events_head++] = event;
return true;
}
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debug("waiting_events_enqueue: Over flow.\n");
return false;
}
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static void waiting_events_clear(void)
{
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waiting_events_head = 0;
}
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static bool waiting_events_has(key_t key)
{
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for (uint8_t i = 0; i < waiting_events_head; i++) {
if KEYEQ(key, waiting_events[i].key) return true;
}
return false;
}
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static void waiting_events_process_in_current_layer(void)
{
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// TODO: in case of including tap key in waiting keys
for (uint8_t i = 0; i < waiting_events_head; i++) {
debug("waiting_events_process_in_current_layer["); debug_dec(i); debug("]\n");
process(waiting_events[i]);
}
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waiting_events_clear();
}
static bool waiting_events_has_anykey_pressed(void)
{
for (uint8_t i = 0; i < waiting_events_head; i++) {
if (waiting_events[i].pressed) return true;
}
return false;
}
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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");
}
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// In tapping term
if (tapping_event.time && timer_elapsed(tapping_event.time) < TAP_TIME) {
if (tapping_event.pressed) {
if (!event.pressed && KEYEQ(tapping_event.key, event.key)) {
debug("Tapping: Release tap key.\n");
if (tap_count == 0) {
debug("Tapping: First tap.\n");
// count up on release
tap_count++;
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process(tapping_event);
waiting_events_process_in_current_layer();
}
tapping_event = event;
process(event);
} else if (!event.pressed && waiting_events_has(event.key)) {
debug("Tapping: End(No tap by typing waiting key).\n");
process(tapping_event);
waiting_events_process_in_current_layer();
process(event);
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tap_count = 0;
tapping_event = (keyevent_t){};
} else {
//debug("Tapping: pressing tap key.\n");
if (tap_count == 0) {
// store event
waiting_events_enqueue(event);
return;
}
process(event);
}
} else {
//debug("Tapping after releasing tap.\n");
// Sequential tap
if (tap_count && event.pressed && KEYEQ(tapping_event.key, event.key)) {
tap_count++;
tapping_event = event;
debug("Tapping: Sequential tap("); debug_hex(tap_count); debug(")\n");
}
process(event);
}
}
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// Not in tapping term
else {
if (tapping_event.time) {
if (tapping_event.pressed) {
if (tap_count == 0) {
// Not tap, holding down normal key.
debug("Not tap.\n");
process(tapping_event);
waiting_events_process_in_current_layer();
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tap_count = 0;
tapping_event = (keyevent_t){};
process(event);
} else {
// Holding down last tap key.
//debug("Time out with holding last tap.\n");
process(event);
if (!event.pressed && KEYEQ(tapping_event.key, event.key)) {
debug("Tapping: End(Release holding last tap).\n");
// clear after release last tap key
tap_count = 0;
tapping_event = (keyevent_t){};
waiting_events_clear();
}
}
} else {
// time out for sequential tap after complete last tap
debug("Tapping: End(Time out after releasing last tap).\n");
tap_count = 0;
tapping_event = (keyevent_t){};
waiting_events_clear();
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process(event);
}
} else {
// Normal state without tapping
if (event.pressed && is_tap_key(event)) {
debug("Tapping: Start(Press tap key).\n");
tapping_event = event;
tap_count = 0;
waiting_events_clear();
} else {
//debug("Normal event(No tapping)\n");
process(event);
}
}
}
}
static void process(keyevent_t event)
{
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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:
// |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:
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case ACT_RMODS_TAP:
{
uint8_t tmp_mods = (action.kind.id == ACT_LMODS_TAP) ? action.key.mods :
action.key.mods<<4;
if (event.pressed) {
if (IS_TAPPING(event.key) && tap_count > 0) {
if (waiting_events_has_anykey_pressed()) {
debug("MODS_TAP: Tap: Cancel: add_mods\n");
tap_count = 0;
add_mods(tmp_mods);
} else {
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debug("MODS_TAP: Tap: register_code\n");
register_code(action.key.code);
}
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} else {
debug("MODS_TAP: No tap: add_mods\n");
add_mods(tmp_mods);
}
} else {
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if (IS_TAPPING(event.key) && tap_count > 0) {
debug("MODS_TAP: Tap: unregister_code\n");
unregister_code(action.key.code);
} else {
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debug("MODS_TAP: No tap: add_mods\n");
del_mods(tmp_mods);
}
}
}
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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) {
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if (IS_TAPPING(event.key) && tap_count > 0) {
debug("LAYER_PRESSED: Tap: register_code\n");
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register_code(action.layer.code);
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} else {
debug("LAYER_PRESSED: No tap: layer_switch\n");
layer_switch(action.layer.opt);
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}
} else {
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if (IS_TAPPING(event.key) && tap_count > 0) {
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:
// 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:
// with tap key
if (event.pressed) {
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if (IS_TAPPING(event.key) && tap_count > 0) {
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(event.key) && tap_count > 0) {
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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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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}
}