qmk/keymap.c

/* Copyright 2022 Christoph Cullmann
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include QMK_KEYBOARD_H

//
// improve home row modifiers via achordion
//

#include "achordion.h"

bool process_record_user(uint16_t keycode, keyrecord_t* record)
{
    if (!process_achordion(keycode, record)) {
        return false;
    }

    return true;
}

void matrix_scan_user(void)
{
    achordion_task();
}

static bool planck_bottom_row(keypos_t pos)
{
    return pos.row % (MATRIX_ROWS / 2) == 3;
}

// works only for rows 0-2 or 4-6
static bool planck_on_left_hand(keypos_t pos)
{
    // planck is like a split keyboard, beside for the last row
    return pos.row < MATRIX_ROWS / 2;
}

bool achordion_chord(uint16_t tap_hold_keycode,
                     keyrecord_t* tap_hold_record,
                     uint16_t other_keycode,
                     keyrecord_t* other_record)
{
    // last row is special for the planck, just allow there everything
    if (planck_bottom_row(tap_hold_record->event.key) || planck_bottom_row(other_record->event.key)) {
        return true;
    }

    // now both keys are in rows 0-2 or 4-6, there we can check the left hand with the simple helper
    return planck_on_left_hand(tap_hold_record->event.key) != planck_on_left_hand(other_record->event.key);
}

// layout helper macro, we just use 34 keys
#define LAYOUT_cullmann(\
K00,   K01,   K02,   K03,   K04,                 K05,   K06,   K07,   K08,   K09,\
K10,   K11,   K12,   K13,   K14,                 K15,   K16,   K17,   K18,   K19,\
K20,   K21,   K22,   K23,   K24,                 K25,   K26,   K27,   K28,   K29,\
                     K30,   K31,                 K32,   K33\
)\
LAYOUT_ortho_4x12(\
K00,   K01,   K02,   K03,   K04,   KC_NO, KC_NO, K05,   K06,   K07,   K08,   K09,\
K10,   K11,   K12,   K13,   K14,   KC_NO, KC_NO, K15,   K16,   K17,   K18,   K19,\
K20,   K21,   K22,   K23,   K24,   KC_NO, KC_NO, K25,   K26,   K27,   K28,   K29,\
KC_NO, KC_NO, KC_NO, K30,   K31,   KC_NO, KC_NO, K32,   K33,   KC_NO, KC_NO, KC_NO\
)

// our layers, used as index in layers and rgb lights
enum planck_layers {
  _QWERTY,
  _SYM,
  _NUM,
  _FN,
  _NAV
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

[_QWERTY] = LAYOUT_cullmann(
    KC_Q,           KC_W,         KC_E,         KC_R,             KC_T,             KC_Y,            KC_U,              KC_I,            KC_O,           KC_P,
    LT(_NUM, KC_A), LALT_T(KC_S), LCTL_T(KC_D), LSFT_T(KC_F),     KC_G,             KC_H,            RSFT_T(KC_J),      RCTL_T(KC_K),    LALT_T(KC_L),   LT(_NAV, KC_QUOT),
    LT(_SYM, KC_Z), RALT_T(KC_X), LGUI_T(KC_C), KC_V,             KC_B,             KC_N,            KC_M,              RGUI_T(KC_COMM), RALT_T(KC_DOT), LT(_FN, KC_SLSH),
                                                KC_TAB,           KC_SPC,           KC_ENT,          KC_BSPC
),

[_SYM] = LAYOUT_cullmann(
    XXXXXXX,        C(KC_X),      C(KC_C),      C(KC_V),          KC_ESC,           KC_LCBR,         KC_AMPR,           KC_ASTR,         KC_LPRN,        KC_RCBR,
    XXXXXXX,        KC_LALT,      KC_LCTL,      KC_LSFT,          XXXXXXX,          KC_PLUS,         KC_DLR,            KC_PERC,         KC_CIRC,        KC_COLN,
    XXXXXXX,        KC_RALT,      KC_LGUI,      XXXXXXX,          XXXXXXX,          KC_PIPE,         KC_EXLM,           KC_AT,           KC_HASH,        KC_TILD,
                                                KC_TAB,           KC_SPC,           KC_UNDS,         KC_RPRN
),

[_NUM] = LAYOUT_cullmann(
    XXXXXXX,        C(KC_X),      C(KC_C),      C(KC_V),          KC_ESC,           KC_LBRC,         KC_7,              KC_8,            KC_9,           KC_RBRC,
    XXXXXXX,        KC_LALT,      KC_LCTL,      KC_LSFT,          XXXXXXX,          KC_EQL,          KC_4,              KC_5,            KC_6,           KC_SCLN,
    XXXXXXX,        KC_RALT,      KC_LGUI,      XXXXXXX,          XXXXXXX,          KC_BSLS,         KC_1,              KC_2,            KC_3,           KC_GRV,
                                                KC_TAB,           KC_SPC,           KC_MINS,         KC_0
),

[_FN] = LAYOUT_cullmann(
    KC_F12,         KC_F7,        KC_F8,        KC_F9,            KC_PSCR,          QK_BOOT,         XXXXXXX,           XXXXXXX,         XXXXXXX,        XXXXXXX,
    KC_F11,         KC_F4,        KC_F5,        KC_F6,            KC_DEL,           XXXXXXX,         KC_RSFT,           KC_RCTL,         KC_LALT,        XXXXXXX,
    KC_F10,         KC_F1,        KC_F2,        KC_F3,            KC_INS,           XXXXXXX,         XXXXXXX,           KC_RGUI,         KC_RALT,        XXXXXXX,
                                                KC_TAB,           KC_SPC,           KC_ENT,          KC_BSPC
),

[_NAV] = LAYOUT_cullmann(
    KC_PGUP,        KC_HOME,      KC_UP,        KC_END,           KC_PGUP,          QK_BOOT,         XXXXXXX,           XXXXXXX,         XXXXXXX,        XXXXXXX,
    KC_PGDN,        KC_LEFT,      KC_DOWN,      KC_RGHT,          KC_PGDN,          XXXXXXX,         KC_RSFT,           KC_RCTL,         KC_LALT,        XXXXXXX,
    XXXXXXX,        XXXXXXX,      XXXXXXX,      XXXXXXX,          XXXXXXX,          XXXXXXX,         XXXXXXX,           KC_RGUI,         KC_RALT,        XXXXXXX,
                                                KC_TAB,           KC_SPC,           KC_ENT,          KC_BSPC
)

};

/* plwnck rev6 RGB layout:
 * ----------------------------------
 * |   6       5       4        3   |
 * |               0                |
 * |   7       8       1        2   |
 * ----------------------------------
 */

const rgblight_segment_t PROGMEM qwerty_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {1, 8, HSV_WHITE}
);

const rgblight_segment_t PROGMEM sym_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {1, 8, HSV_BLUE}
);

const rgblight_segment_t PROGMEM num_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {1, 8, HSV_GREEN}
);

const rgblight_segment_t PROGMEM fn_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {1, 8, HSV_RED}
);

const rgblight_segment_t PROGMEM nav_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {1, 8, HSV_WHITE}
);

const rgblight_segment_t * const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
    [_QWERTY] = qwerty_layer,
    [_SYM] = sym_layer,
    [_NUM] = num_layer,
    [_FN] = fn_layer,
    [_NAV] = nav_layer
);

void keyboard_post_init_user(void) {
    // Enable the LED layers
    rgblight_layers = my_rgb_layers;
}

layer_state_t layer_state_set_user(layer_state_t state)
{
    rgblight_set_layer_state(_SYM, layer_state_cmp(state, _SYM));
    rgblight_set_layer_state(_NUM, layer_state_cmp(state, _NUM));
    rgblight_set_layer_state(_FN, layer_state_cmp(state, _FN));
    rgblight_set_layer_state(_NAV, layer_state_cmp(state, _NAV));
    return state;
}