qmk-firmware/keyboards/planck/keymaps/samuel/keymap.c

#include QMK_KEYBOARD_H

extern keymap_config_t keymap_config;

static uint16_t tap_timers[10]  = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

char last_mod = -1;

enum planck_layers {
  _DVORAK,
  _RISE
};

// where the 'T_' communicates how the key does something different when tapped.
enum planck_keycodes {
  DVORAK = SAFE_RANGE,
  KC_T_LALT,
  KC_T_RALT,
  KC_T_LGUI,
  KC_T_RGUI,
  KC_T_LCTL,
  KC_T_RCTL,
  KC_T_LSFT,
  KC_T_RSFT,
  KC_T_LRSE,
  KC_T_RRSE,
  KC_EZRGHT,
  KC_EZLEFT,
  KC_EZUP,
  KC_EZDOWN,
  KC_EZUNDO,
  KC_EZCOPY,
  KC_EZCUT,
  KC_EZPSTE
};

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

[_DVORAK] =

{{ KC_T_LRSE, KC_QUOT, KC_COMM, KC_DOT, KC_P, KC_Y, KC_F, KC_G, KC_C, KC_R, KC_L, KC_T_RRSE},
{ KC_T_LSFT, KC_A, KC_O, KC_E, KC_U, KC_I, KC_D, KC_H, KC_T, KC_N, KC_S, KC_T_RSFT},
{ KC_T_LCTL, KC_SCLN, KC_Q, KC_J, KC_K, KC_X, KC_B, KC_M, KC_W, KC_V, KC_Z, KC_T_RCTL},
{ KC_T_LGUI, KC_T_LALT, KC_UP, KC_DOWN, KC_BSPC, KC_TAB, KC_ENT, KC_SPC, KC_LEFT, KC_RIGHT, KC_T_RALT, KC_T_RGUI}
},

[_RISE] =

{{ KC_TRANSPARENT, KC_EZUNDO, KC_EZCOPY, KC_EZCUT, KC_EZPSTE, KC_INS, KC_EQL, KC_7, KC_8, KC_9, KC_F11, KC_TRANSPARENT},
{ KC_TRANSPARENT, KC_ESC, KC_CAPS, KC_PGUP, KC_PGDN, KC_F4, KC_ASTR, KC_4, KC_5, KC_6, KC_0, KC_TRANSPARENT},
{ KC_TRANSPARENT, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_1, KC_2, KC_3, KC_F12, KC_TRANSPARENT},
{ KC_TRANSPARENT, KC_TRANSPARENT, KC_EZUP, KC_EZDOWN, KC_TRANSPARENT, KC_AMPR, KC_PIPE, KC_TRANSPARENT, KC_EZLEFT, KC_EZRGHT, KC_TRANSPARENT, KC_TRANSPARENT}
},

};

void mod_press(uint16_t hold_code, int id) {
    tap_timers[id] = timer_read();
    last_mod = id;
    register_code(hold_code);
}

void mod_lift(uint16_t tap_code, uint16_t hold_code, int id) {
    unregister_code(hold_code);
    if (last_mod == id && timer_elapsed(tap_timers[id]) < TAPPING_TERM) {
      tap_code16(tap_code);
      last_mod = -1;
    }
}

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  switch (keycode) {
    case DVORAK:
      if (record->event.pressed) {
        set_single_persistent_default_layer(_DVORAK);
      }
      return false;
      break;

case KC_T_LALT:
if (record->event.pressed) {
  mod_press(KC_LALT, 0);
 } else {
  mod_lift(S(KC_9), KC_LALT, 0);
 }
return false;
break;
case KC_T_RALT:
if (record->event.pressed) {
  mod_press(KC_RALT, 1);
 } else {
  mod_lift(S(KC_0), KC_RALT, 1);
 }
return false;
break;

case KC_T_LGUI:
if (record->event.pressed) {
  mod_press(KC_LGUI, 2);
 } else {
  mod_lift(KC_GRAVE, KC_LGUI, 2);
 }
return false;
break;
case KC_T_RGUI:
if (record->event.pressed) {
  mod_press(KC_RGUI, 3);
 } else {
  mod_lift(KC_BSLASH, KC_RGUI, 3);
 }
return false;
break;

case KC_T_LCTL:
if (record->event.pressed) {
  mod_press(KC_LCTL, 4);
 } else {
  mod_lift(KC_LBRACKET, KC_LCTL, 4);
 }
return false;
break;
case KC_T_RCTL:
if (record->event.pressed) {
  mod_press(KC_RCTL, 5);
 } else {
  mod_lift(KC_RBRACKET, KC_RCTL, 5);
 }
return false;
break;

case KC_T_LSFT:
if (record->event.pressed) {
  mod_press(KC_LSFT, 6);
 } else {
  mod_lift(KC_EQUAL, KC_LSFT, 6);
 }
return false;
break;
case KC_T_RSFT:
if (record->event.pressed) {
  mod_press(KC_RSFT, 7);
 } else {
  mod_lift(KC_MINUS, KC_RSFT, 7);
 }
return false;
break;

case KC_T_LRSE:
if (record->event.pressed) {
  tap_timers[8] = timer_read();
  last_mod = 8;
  layer_on(_RISE);
 } else {
  layer_off(_RISE);
  if (last_mod == 8 && timer_elapsed(tap_timers[8]) < TAPPING_TERM) {
    tap_code16(KC_DELETE);
    last_mod = -1;
  }
 }
return false;
break;
case KC_T_RRSE:
if (record->event.pressed) {
  tap_timers[9] = timer_read();
  last_mod = 9;
  layer_on(_RISE);
 } else {
  layer_off(_RISE);
  if (last_mod == 9 && timer_elapsed(tap_timers[9]) < TAPPING_TERM) {
    tap_code16(KC_SLASH);
    last_mod = -1;
  }
 }
return false;
break;

case KC_EZRGHT:
if (record->event.pressed) {
  register_code(KC_LCTL);
  tap_code16(S(KC_RGHT));
  unregister_code(KC_LCTL);
  last_mod = -1;
 }
return false;
break;
case KC_EZLEFT:
if (record->event.pressed) {
  register_code(KC_LCTL);
  tap_code16(S(KC_LEFT));
  unregister_code(KC_LCTL);
  last_mod = -1;
 }
return false;
break;
case KC_EZDOWN:
if (record->event.pressed) {
  register_code(KC_LCTL);
  tap_code16(S(KC_DOWN));
  unregister_code(KC_LCTL);
  last_mod = -1;
 }
return false;
break;
case KC_EZUP:
if (record->event.pressed) {
  register_code(KC_LCTL);
  tap_code16(S(KC_UP));
  unregister_code(KC_LCTL);
  last_mod = -1;
 }
return false;
break;
case KC_EZUNDO:
if (record->event.pressed) {
  tap_code16(C(KC_Z));
  last_mod = -1;
}
return false;
break;
case KC_EZCOPY:
if (record->event.pressed) {
  tap_code16(C(KC_C));
  last_mod = -1;
}
return false;
break;
case KC_EZCUT:
if (record->event.pressed) {
  tap_code16(C(KC_X));
  last_mod = -1;
}
return false;
break;
case KC_EZPSTE:
if (record->event.pressed) {
  tap_code16(C(KC_P));
  last_mod = -1;
}
return false;
break;

  }
  last_mod = -1;
  return true;
}