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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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