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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"
static void process(keyevent_t event, action_t action);
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static void register_code(uint8_t code);
static void unregister_code(uint8_t code);
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 uint16_t last_event_time = 0;
static uint8_t tap_count = 0;
/* layer */
uint8_t default_layer = 0;
uint8_t current_layer = 0;
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keyrecord_t delaying_layer = {};
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#define WAITING_KEYS_BUFFER 3
static keyrecord_t waiting_keys[WAITING_KEYS_BUFFER] = {};
static uint8_t waiting_keys_head = 0;
static bool waiting_keys_enqueue(keyevent_t event, action_t action)
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{
debug("waiting_keys["); debug_dec(waiting_keys_head); debug("] = ");
debug_hex16(action.code); debug("\n");
if (waiting_keys_head < WAITING_KEYS_BUFFER) {
waiting_keys[waiting_keys_head++] = (keyrecord_t){ .event = event,
.action = action,
.mods = host_get_mods() };
} else {
return true;
}
}
static void waiting_keys_clear(void)
{
waiting_keys_head = 0;
}
static bool waiting_keys_has(keypos_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
uint8_t tmp_mods = host_get_mods();
for (uint8_t i = 0; i < waiting_keys_head; i++) {
/* revive status of mods */
host_set_mods(waiting_keys[i].mods);
process(waiting_keys[i].event, keymap_get_action(current_layer,
waiting_keys[i].event.key.row,
waiting_keys[i].event.key.col));
debug("waiting_keys_process_in_current_layer["); debug_dec(i); debug("]\n");
}
host_set_mods(tmp_mods);
waiting_keys_clear();
}
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static void process(keyevent_t event, action_t action)
{
//action_t action = keymap_get_action(current_layer, event.key.row, event.key.col);
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debug("action: "); debug_hex16(action.code); debug("\n");
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switch (action.kind.id) {
/* Key and Mods */
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case ACT_LMODS:
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// normal key or key plus mods
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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:
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;
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case ACT_LMOD_TAP:
break;
case ACT_RMOD_TAP:
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()) {
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register_code(action.layer.code);
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} else {
debug("Delay switching layer("); debug_hex8(action.layer.opt); debug(")\n");
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delaying_layer = (keyrecord_t){
.event = event,
.action = action,
.mods = host_get_mods()
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};
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}
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} else if (tap_count > 0) {
debug("tap: "); debug_hex(tap_count); debug("\n");
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register_code(action.layer.code);
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}
} else {
// tap key
if (KEYEQ(event.key, delaying_layer.event.key) &&
timer_elapsed(delaying_layer.event.time) <= TAP_TIME) {
uint8_t tmp_mods = host_get_mods();
host_set_mods(delaying_layer.mods);
register_code(delaying_layer.action.layer.code);
host_set_mods(tmp_mods);
unregister_code(delaying_layer.action.layer.code);
} else {
unregister_code(action.layer.code);
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}
delaying_layer = (keyrecord_t){};
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}
break;
}
break;
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case ACT_LAYER_RELEASED:
switch (action.layer.code) {
case 0x00:
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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) {
if (tap_count == 0) {
if (host_has_anykey()) {
register_code(action.layer.code);
} else {
delaying_layer = (keyrecord_t){
.event = event,
.action = action,
.mods = keyboard_report->mods
};
}
} else if (tap_count > 0) {
debug("tap: "); 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;
}
}
void action_exec(keyevent_t event)
{
/*
debug("key["); debug_hex8(event.key.row); debug(":"); debug_hex8(event.key.col);
if (event.pressed) debug("]down\n"); else debug("]up\n");
*/
/* When delaying layer switch */
if (delaying_layer.action.code) {
/* Layer switch when tap time elapses or waiting key is released */
if ((timer_elapsed(delaying_layer.event.time) > TAP_TIME) ||
(!event.pressed && waiting_keys_has(event.key))) {
/* layer switch */
switch (delaying_layer.action.kind.id) {
case ACT_LAYER_PRESSED:
layer_switch(delaying_layer.action.layer.opt);
break;
case ACT_LAYER_BIT:
layer_switch(current_layer | delaying_layer.action.layer.opt);
break;
}
delaying_layer = (keyrecord_t){};
/* Process waiting keys in new layer */
waiting_keys_process_in_current_layer();
}
/* when delaying layer key is released within delay term */
else if (!event.pressed && KEYEQ(event.key, delaying_layer.event.key)) {
/* tap key down */
uint8_t tmp_mods = host_get_mods();
host_set_mods(delaying_layer.mods);
register_code(delaying_layer.action.layer.code);
delaying_layer = (keyrecord_t){};
host_set_mods(tmp_mods);
/* process waiting keys */
waiting_keys_process_in_current_layer();
}
}
// not real event. event just to update delaying layer.
if (IS_NOEVENT(event)) {
return;
}
/* count tap when key is up */
if (KEYEQ(event.key, last_event.key) && timer_elapsed(last_event.time) <= TAP_TIME) {
if (!event.pressed) tap_count++;
} else {
tap_count = 0;
}
action_t action = keymap_get_action(current_layer, event.key.row, event.key.col);
// TODO: all key events(pressed, released) should be recorded?
/* postpone key-down events while delaying layer */
if (delaying_layer.action.code) {
if (event.pressed) {
waiting_keys_enqueue(event, action);
} else {
process(event, action);
}
} else {
process(event, action);
}
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/* last event */
last_event = event;
}
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 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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}
}