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- // Copyright 2021-2022 Google LLC
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // https://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
-
- #include "caps_word.h"
-
- /** @brief True when Caps Word is active. */
- static bool caps_word_active = false;
-
- #if CAPS_WORD_IDLE_TIMEOUT > 0
- // Constrain timeout to a sensible range. With 16-bit timers, the longest
- // timeout possible is 32768 ms, rounded here to 30000 ms = half a minute.
- # if CAPS_WORD_IDLE_TIMEOUT < 100 || CAPS_WORD_IDLE_TIMEOUT > 30000
- # error "CAPS_WORD_IDLE_TIMEOUT must be between 100 and 30000 ms"
- # endif
-
- /** @brief Deadline for idle timeout. */
- static uint16_t idle_timer = 0;
-
- void caps_word_task(void) {
- if (caps_word_active && timer_expired(timer_read(), idle_timer)) {
- caps_word_off();
- }
- }
-
- void caps_word_reset_idle_timer(void) {
- idle_timer = timer_read() + CAPS_WORD_IDLE_TIMEOUT;
- }
- #endif // CAPS_WORD_IDLE_TIMEOUT > 0
-
- void caps_word_on(void) {
- if (caps_word_active) {
- return;
- }
-
- clear_mods();
- #ifndef NO_ACTION_ONESHOT
- clear_oneshot_mods();
- #endif // NO_ACTION_ONESHOT
- #if CAPS_WORD_IDLE_TIMEOUT > 0
- caps_word_reset_idle_timer();
- #endif // CAPS_WORD_IDLE_TIMEOUT > 0
-
- caps_word_active = true;
- caps_word_set_user(true);
- }
-
- void caps_word_off(void) {
- if (!caps_word_active) {
- return;
- }
-
- unregister_weak_mods(MOD_MASK_SHIFT); // Make sure weak shift is off.
- caps_word_active = false;
- caps_word_set_user(false);
- }
-
- void caps_word_toggle(void) {
- if (caps_word_active) {
- caps_word_off();
- } else {
- caps_word_on();
- }
- }
-
- bool is_caps_word_on(void) {
- return caps_word_active;
- }
-
- __attribute__((weak)) void caps_word_set_user(bool active) {}
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