qmk_firmware/quantum/process_keycode/process_repeat_key.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.

#include "process_repeat_key.h"

// Default implementation of remember_last_key_user().
__attribute__((weak)) bool remember_last_key_user(uint16_t keycode, keyrecord_t* record, uint8_t* remembered_mods) {
    return true;
}

static bool remember_last_key(uint16_t keycode, keyrecord_t* record, uint8_t* remembered_mods) {
    switch (keycode) {
        // Ignore MO, TO, TG, TT, and TL layer switch keys.
        case QK_MOMENTARY ... QK_MOMENTARY_MAX:
        case QK_TO ... QK_TO_MAX:
        case QK_TOGGLE_LAYER ... QK_TOGGLE_LAYER_MAX:
        case QK_LAYER_TAP_TOGGLE ... QK_LAYER_TAP_TOGGLE_MAX:
        // Ignore mod keys.
        case KC_LCTL ... KC_RGUI:
        case KC_HYPR:
        case KC_MEH:
#ifndef NO_ACTION_ONESHOT // Ignore one-shot keys.
        case QK_ONE_SHOT_LAYER ... QK_ONE_SHOT_LAYER_MAX:
        case QK_ONE_SHOT_MOD ... QK_ONE_SHOT_MOD_MAX:
#endif                  // NO_ACTION_ONESHOT
#ifdef TRI_LAYER_ENABLE // Ignore Tri Layer keys.
        case QK_TRI_LAYER_LOWER:
        case QK_TRI_LAYER_UPPER:
#endif // TRI_LAYER_ENABLE
            return false;

            // Ignore hold events on tap-hold keys.
#ifndef NO_ACTION_TAPPING
        case QK_MOD_TAP ... QK_MOD_TAP_MAX:
#    ifndef NO_ACTION_LAYER
        case QK_LAYER_TAP ... QK_LAYER_TAP_MAX:
#    endif // NO_ACTION_LAYER
            if (record->tap.count == 0) {
                return false;
            }
            break;
#endif // NO_ACTION_TAPPING

#ifdef SWAP_HANDS_ENABLE
        case QK_SWAP_HANDS ... QK_SWAP_HANDS_MAX:
            if (IS_SWAP_HANDS_KEYCODE(keycode) || record->tap.count == 0) {
                return false;
            }
            break;
#endif // SWAP_HANDS_ENABLE

        case QK_REPEAT_KEY:
#ifndef NO_ALT_REPEAT_KEY
        case QK_ALT_REPEAT_KEY:
#endif // NO_ALT_REPEAT_KEY
            return false;
    }

    return remember_last_key_user(keycode, record, remembered_mods);
}

bool process_last_key(uint16_t keycode, keyrecord_t* record) {
    if (get_repeat_key_count()) {
        return true;
    }

    if (record->event.pressed) {
        uint8_t remembered_mods = get_mods() | get_weak_mods();
#ifndef NO_ACTION_ONESHOT
        remembered_mods |= get_oneshot_mods();
#endif // NO_ACTION_ONESHOT

        if (remember_last_key(keycode, record, &remembered_mods)) {
            set_last_record(keycode, record);
            set_last_mods(remembered_mods);
        }
    }

    return true;
}

bool process_repeat_key(uint16_t keycode, keyrecord_t* record) {
    if (get_repeat_key_count()) {
        return true;
    }

    if (keycode == QK_REPEAT_KEY) {
        repeat_key_invoke(&record->event);
        return false;
#ifndef NO_ALT_REPEAT_KEY
    } else if (keycode == QK_ALT_REPEAT_KEY) {
        alt_repeat_key_invoke(&record->event);
        return false;
#endif // NO_ALT_REPEAT_KEY
    }

    return true;
}