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Merge pull request #15 from yuanw/emacs
Emacs friendly layout
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| // Copyright 2021-2024 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. | ||
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| /** | ||
| * @file custom_shift_keys.c | ||
| * @brief Custom Shift Keys implementation | ||
| * | ||
| * For full documentation, see | ||
| * <https://getreuer.info/posts/keyboards/custom-shift-keys> | ||
| */ | ||
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| #include "custom_shift_keys.h" | ||
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| #if !defined(IS_QK_MOD_TAP) | ||
| // Attempt to detect out-of-date QMK installation, which would fail with | ||
| // implicit-function-declaration errors in the code below. | ||
| #error "custom_shift_keys: QMK version is too old to build. Please update QMK." | ||
| #else | ||
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| bool process_custom_shift_keys(uint16_t keycode, keyrecord_t *record) { | ||
| static uint16_t registered_keycode = KC_NO; | ||
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| // If a custom shift key is registered, then this event is either releasing | ||
| // it or manipulating another key at the same time. Either way, we release | ||
| // the currently registered key. | ||
| if (registered_keycode != KC_NO) { | ||
| unregister_code16(registered_keycode); | ||
| registered_keycode = KC_NO; | ||
| } | ||
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| if (record->event.pressed) { // Press event. | ||
| const uint8_t saved_mods = get_mods(); | ||
| #ifndef NO_ACTION_ONESHOT | ||
| const uint8_t mods = saved_mods | get_weak_mods() | get_oneshot_mods(); | ||
| #else | ||
| const uint8_t mods = saved_mods | get_weak_mods(); | ||
| #endif // NO_ACTION_ONESHOT | ||
| if ((mods & MOD_MASK_SHIFT) != 0 // Shift is held. | ||
| #if CUSTOM_SHIFT_KEYS_NEGMODS != 0 | ||
| // Nothing in CUSTOM_SHIFT_KEYS_NEGMODS is held. | ||
| && (mods & (CUSTOM_SHIFT_KEYS_NEGMODS)) == 0 | ||
| #endif // CUSTOM_SHIFT_KEYS_NEGMODS != 0 | ||
| ) { | ||
| // Continue default handling if this is a tap-hold key being held. | ||
| if ((IS_QK_MOD_TAP(keycode) || IS_QK_LAYER_TAP(keycode)) && | ||
| record->tap.count == 0) { | ||
| return true; | ||
| } | ||
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| // Search for a custom shift key whose keycode is `keycode`. | ||
| for (int i = 0; i < NUM_CUSTOM_SHIFT_KEYS; ++i) { | ||
| if (keycode == custom_shift_keys[i].keycode) { | ||
| registered_keycode = custom_shift_keys[i].shifted_keycode; | ||
| if (IS_QK_MODS(registered_keycode) && // Should keycode be shifted? | ||
| (QK_MODS_GET_MODS(registered_keycode) & MOD_LSFT) != 0) { | ||
| register_code16(registered_keycode); // If so, press it directly. | ||
| } else { | ||
| // Otherwise cancel shift mods, press the key, and restore mods. | ||
| del_weak_mods(MOD_MASK_SHIFT); | ||
| #ifndef NO_ACTION_ONESHOT | ||
| del_oneshot_mods(MOD_MASK_SHIFT); | ||
| #endif // NO_ACTION_ONESHOT | ||
| unregister_mods(MOD_MASK_SHIFT); | ||
| register_code16(registered_keycode); | ||
| set_mods(saved_mods); | ||
| } | ||
| return false; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| return true; // Continue with default handling. | ||
| } | ||
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| #endif // version check |
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