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-rw-r--r--users/ericgebhart/extensions/mod_lock.c81
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diff --git a/users/ericgebhart/extensions/mod_lock.c b/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;
+ }
+}