qmk-firmware/users/drashna/drashna.c

// Copyright 2020 Christopher Courtney, aka Drashna Jael're  (@drashna) <drashna@live.com>
// SPDX-License-Identifier: GPL-2.0-or-later

#include "drashna.h"

userspace_config_t userspace_config;

bool mod_key_press_timer(uint16_t code, uint16_t mod_code, bool pressed) {
    static uint16_t this_timer;
    if (pressed) {
        this_timer = timer_read();
    } else {
        if (timer_elapsed(this_timer) < TAPPING_TERM) {
            tap_code(code);
        } else {
            register_code(mod_code);
            tap_code(code);
            unregister_code(mod_code);
        }
    }
    return false;
}

bool mod_key_press(uint16_t code, uint16_t mod_code, bool pressed, uint16_t this_timer) {
    if (pressed) {
        this_timer = timer_read();
    } else {
        if (timer_elapsed(this_timer) < TAPPING_TERM) {
            tap_code(code);
        } else {
            register_code(mod_code);
            tap_code(code);
            unregister_code(mod_code);
        }
    }
    return false;
}

bool hasAllBitsInMask(uint8_t value, uint8_t mask) {
    value &= 0xF;
    mask &= 0xF;

    return (value & mask) == mask;
}

void tap_code16_nomods(uint8_t kc) {
    uint8_t temp_mod = get_mods();
    clear_mods();
    clear_oneshot_mods();
    tap_code16(kc);
    set_mods(temp_mod);
}