82 lines
3 KiB
C
82 lines
3 KiB
C
// Copyright 2022-2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "layer_lock.h"
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#include "process_layer_lock.h"
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#include "quantum_keycodes.h"
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#include "action_util.h"
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// The current lock state. The kth bit is on if layer k is locked.
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extern layer_state_t locked_layers;
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// Handles an event on an `MO` or `TT` layer switch key.
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static inline bool handle_mo_or_tt(uint8_t layer, keyrecord_t* record) {
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if (is_layer_locked(layer)) {
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if (record->event.pressed) { // On press, unlock the layer.
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layer_lock_invert(layer);
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}
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return false; // Skip default handling.
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}
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return true;
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}
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bool process_layer_lock(uint16_t keycode, keyrecord_t* record) {
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#ifndef NO_ACTION_LAYER
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layer_lock_activity_trigger();
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// The intention is that locked layers remain on. If something outside of
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// this feature turned any locked layers off, unlock them.
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if ((locked_layers & ~layer_state) != 0) {
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layer_lock_set_kb(locked_layers &= layer_state);
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}
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if (keycode == QK_LAYER_LOCK) {
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if (record->event.pressed) { // The layer lock key was pressed.
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layer_lock_invert(get_highest_layer(layer_state));
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}
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return false;
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}
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switch (keycode) {
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case QK_MOMENTARY ... QK_MOMENTARY_MAX: // `MO(layer)` keys.
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return handle_mo_or_tt(QK_MOMENTARY_GET_LAYER(keycode), record);
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case QK_LAYER_TAP_TOGGLE ... QK_LAYER_TAP_TOGGLE_MAX: // `TT(layer)`.
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return handle_mo_or_tt(QK_LAYER_TAP_TOGGLE_GET_LAYER(keycode), record);
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case QK_LAYER_MOD ... QK_LAYER_MOD_MAX: { // `LM(layer, mod)`.
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uint8_t layer = QK_LAYER_MOD_GET_LAYER(keycode);
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if (is_layer_locked(layer)) {
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if (record->event.pressed) { // On press, unlock the layer.
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layer_lock_invert(layer);
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} else { // On release, clear the mods.
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clear_mods();
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send_keyboard_report();
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}
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return false; // Skip default handling.
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}
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} break;
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# ifndef NO_ACTION_TAPPING
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case QK_LAYER_TAP ... QK_LAYER_TAP_MAX: // `LT(layer, key)` keys.
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if (record->tap.count == 0 && !record->event.pressed && is_layer_locked(QK_LAYER_TAP_GET_LAYER(keycode))) {
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// Release event on a held layer-tap key where the layer is locked.
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return false; // Skip default handling so that layer stays on.
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}
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break;
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# endif // NO_ACTION_TAPPING
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}
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#endif // NO_ACTION_LAYER
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return true;
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}
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