qmk-firmware/users/ericgebhart/extensions/mod_lock.c

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/*
Copyright 2022 Eric Gebhart <e.a.gebhart@gmail.com>, @possumvibes
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/>.
*/
// Derived from mod_lock by @possumvibes.
#include "mod_lock.h"
#undef MODL
#define MODL(KEYCODE, MODKC) \
{false, MODKC, KEYCODE},
#define A_KEY(KEYCODE) case KEYCODE:
#define BLANK(...)
#undef IGNORE_KC
#define IGNORE_KC BLANK
mod_lock_state_t modlock_states[] = {
#ifdef MOD_LOCK_ENABLE
#include "mod_lock.def"
#endif
};
uint8_t NUM_MODLOCK_STATES = sizeof(modlock_states) / sizeof(mod_lock_state_t);
void process_mod_lock(uint16_t keycode, keyrecord_t *record) {
#ifdef MOD_LOCK_ENABLE
mod_lock_state_t *curr_state = NULL;
for (int i = 0; i < NUM_MODLOCK_STATES; ++i) {
curr_state = &modlock_states[i];
if (keycode == curr_state->trigger) {
if (record->event.pressed) {
if (curr_state->locking) {
unregister_code(curr_state->mod);
} else {
register_code(curr_state->mod);
}
curr_state->locking = !curr_state->locking;
}
} else {
// check for cancel condition on keydown and keyup
if (curr_state->locking && is_mod_lock_cancel_key(keycode)) {
unregister_code(curr_state->mod);
curr_state->locking = false;
}
}
}
#endif
}
#undef MODL
#undef IGNORE_KC
#define MODL BLANK
#define IGNORE_KC A_KEY
bool is_mod_lock_cancel_key(uint16_t keycode) {
// Mod locks are exclusively used on the nav layer.
// any key besides nav keys should cancel the lock.
switch (keycode) {
#ifdef MOD_LOCK_ENABLE
#include "mod_lock.def"
#endif
return false;
default:
return true;
}
}