98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
// Copyright 2022-2023 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.
|
|
|
|
/**
|
|
* @file layer_lock.h
|
|
* @brief Layer Lock, a key to stay in the current layer.
|
|
*
|
|
* Overview
|
|
* --------
|
|
*
|
|
* Layers are often accessed by holding a button, e.g. with a momentary layer
|
|
* switch `MO(layer)` or layer tap `LT(layer, key)` key. But you may sometimes
|
|
* want to "lock" or "toggle" the layer so that it stays on without having to
|
|
* hold down a button. One way to do that is with a tap-toggle `TT` layer key,
|
|
* but here is an alternative.
|
|
*
|
|
* This library implements a "Layer Lock key". When tapped, it "locks" the
|
|
* highest layer to stay active, assuming the layer was activated by one of the
|
|
* following keys:
|
|
*
|
|
* * `MO(layer)` momentary layer switch
|
|
* * `LT(layer, key)` layer tap
|
|
* * `OSL(layer)` one-shot layer
|
|
* * `TT(layer)` layer tap toggle
|
|
* * `LM(layer, mod)` layer-mod key (the layer is locked, but not the mods)
|
|
*
|
|
* Tapping the Layer Lock key again unlocks and turns off the layer.
|
|
*
|
|
* @note When a layer is "locked", other layer keys such as `TO(layer)` or
|
|
* manually calling `layer_off(layer)` will override and unlock the layer.
|
|
*
|
|
* Configuration
|
|
* -------------
|
|
*
|
|
* Optionally, a timeout may be defined so that Layer Lock disables
|
|
* automatically if not keys are pressed for `LAYER_LOCK_IDLE_TIMEOUT`
|
|
* milliseconds. Define `LAYER_LOCK_IDLE_TIMEOUT` in your config.h, for instance
|
|
*
|
|
* #define LAYER_LOCK_IDLE_TIMEOUT 60000 // Turn off after 60 seconds.
|
|
*
|
|
* For full documentation, see
|
|
* <https://getreuer.info/posts/keyboards/layer-lock>
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include "action_layer.h"
|
|
#include "action_util.h"
|
|
|
|
/** Returns true if `layer` is currently locked. */
|
|
bool is_layer_locked(uint8_t layer);
|
|
|
|
/** Locks and turns on `layer`. */
|
|
void layer_lock_on(uint8_t layer);
|
|
|
|
/** Unlocks and turns off `layer`. */
|
|
void layer_lock_off(uint8_t layer);
|
|
|
|
/** Unlocks and turns off all locked layers. */
|
|
void layer_lock_all_off(void);
|
|
|
|
/** Toggles whether `layer` is locked. */
|
|
void layer_lock_invert(uint8_t layer);
|
|
|
|
/**
|
|
* Optional callback that gets called when a layer is locked or unlocked.
|
|
*
|
|
* This is useful to represent the current lock state, e.g. by setting an LED or
|
|
* playing a sound. In your keymap, define
|
|
*
|
|
* void layer_lock_set_user(layer_state_t locked_layers) {
|
|
* // Do something like `set_led(is_layer_locked(NAV));`
|
|
* }
|
|
*
|
|
* @param locked_layers Bitfield in which the kth bit represents whether the
|
|
* kth layer is on.
|
|
*/
|
|
bool layer_lock_set_kb(layer_state_t locked_layers);
|
|
bool layer_lock_set_user(layer_state_t locked_layers);
|
|
|
|
/** Handle various background tasks */
|
|
void layer_lock_task(void);
|
|
|
|
/** Update any configured timeouts */
|
|
void layer_lock_activity_trigger(void);
|