Keymaps: Add whitefox constexpr keymap (#3541)

* Add keyboards/whitefox/keymaps/constexpr

* Conform to project coding conventions

* Tweak numpad layer keys

* Remove unnecessary directives

3 files changed, 160 insertions, 0 deletions

diff --git a/keyboards/whitefox/keymaps/constexpr/config.h b/keyboards/whitefox/keymaps/constexpr/config.h
new file mode 100644
index 0000000000..b4bc05acf5
--- /dev/null
+++ b/keyboards/whitefox/keymaps/constexpr/config.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#define FORCE_NKRO
+
+#define TAPPING_TOGGLE 2
+#define TAPPING_TERM 200
+#define PERMISSIVE_HOLD
+
+#define MOUSEKEY_DELAY 50
+#define MOUSEKEY_INTERVAL 15
+#define MOUSEKEY_MAX_SPEED 4
+#define MOUSEKEY_TIME_TO_MAX 50
+#define MOUSEKEY_WHEEL_MAX_SPEED 1
+#define MOUSEKEY_WHEEL_TIME_TO_MAX 50
diff --git a/keyboards/whitefox/keymaps/constexpr/keymap.c b/keyboards/whitefox/keymaps/constexpr/keymap.c
new file mode 100644
index 0000000000..b19f1c81fa
--- /dev/null
+++ b/keyboards/whitefox/keymaps/constexpr/keymap.c
@@ -0,0 +1,142 @@
+#include QMK_KEYBOARD_H
+
+#define FN_CAPS LT(L_FN, KC_CAPS)
+#define FN_CTRL TD(TD_FN_CTRL)
+#define RL_ALT  TD(TD_RL_ALT)  // Unused
+
+#define TOP     LCTL(KC_HOME)
+#define BOTTOM  LCTL(KC_END)
+
+#define UC_LPRN UC(0x0028)
+#define UC_RPRN UC(0x0029)
+#define UC_EQLS UC(0x003D)
+#define UC_MULS UC(0x00D7)
+#define UC_DIVS UC(0x00F7)
+#define UC_MINS UC(0x2212)
+
+void matrix_init_user(void)
+{
+  set_unicode_input_mode(UC_WIN);
+}
+
+enum layers {
+  L_BASE,
+  L_FN,
+  L_NUMPAD,
+};
+
+enum custom_keycodes {
+  CLEAR = SAFE_RANGE,
+  NUMPAD,
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record)
+{
+  if (!record->event.pressed) { return true; }
+
+  switch (keycode) {
+  case CLEAR:
+    SEND_STRING(SS_LCTRL("a") SS_TAP(X_DELETE));
+    return false;
+
+  case NUMPAD:
+    layer_invert(L_NUMPAD);
+    bool num_lock = host_keyboard_leds() & 1<<USB_LED_NUM_LOCK;
+    if (num_lock != (bool)IS_LAYER_ON(L_NUMPAD)) {
+      register_code(KC_NLCK);  // Force Num Lock to match layer state.
+      unregister_code(KC_NLCK);
+    }
+    return false;
+
+  default:
+    return true;
+  }
+}
+
+enum tap_dance {
+  TD_FN_CTRL,
+  TD_RL_ALT,  // Unused
+};
+
+void td_fn_ctrl_finished(qk_tap_dance_state_t *state, void *user_data)
+{
+  // Single tap → Fn, double tap → RCtrl, triple tap → Fn+RCtrl etc.
+  if (state->count & 1) { layer_on(L_FN); }
+  if (state->count & 2) { register_code(KC_RCTL); }
+}
+
+void td_fn_ctrl_reset(qk_tap_dance_state_t *state, void *user_data)
+{
+  if (state->count & 1) { layer_off(L_FN); }
+  if (state->count & 2) { unregister_code(KC_RCTL); }
+}
+
+qk_tap_dance_action_t tap_dance_actions[] = {
+  [TD_FN_CTRL] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, td_fn_ctrl_finished, td_fn_ctrl_reset),
+  [TD_RL_ALT]  = ACTION_TAP_DANCE_DOUBLE(KC_RALT, KC_LALT),  // Unused
+};
+
+const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  /* Base layer
+   * ,---------------------------------------------------------------.
+   * |Esc| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | - | = | \ | ` |PSc|
+   * |---------------------------------------------------------------|
+   * | Tab | Q | W | E | R | T | Y | U | I | O | P | [ | ] |Bspc |Del|
+   * |---------------------------------------------------------------|
+   * |FnCaps| A | S | D | F | G | H | J | K | L | ; | ' | Enter  |PgU|
+   * |---------------------------------------------------------------|
+   * | LShift | Z | X | C | V | B | N | M | , | . | / |RShift| ↑ |PgD|
+   * |---------------------------------------------------------------|
+   * |LCtl|LGui|LAlt|         Space          |RAlt|FnCt| | ← | ↓ | → |
+   * `---------------------------------------------------------------'
+   */
+  [L_BASE] = LAYOUT_truefox( \
+    KC_ESC, KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,   KC_MINS,KC_EQL, KC_BSLS,KC_GRV, KC_PSCR, \
+    KC_TAB, KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,   KC_LBRC,KC_RBRC,KC_BSPC,        KC_DEL,  \
+    FN_CAPS,KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,   KC_SCLN,KC_QUOT,        KC_ENT,         KC_PGUP, \
+    KC_LSFT,        KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM,KC_DOT, KC_SLSH,KC_RSFT,        KC_UP,  KC_PGDN, \
+    KC_LCTL,KC_LGUI,KC_LALT,                        KC_SPC,                 KC_RALT,FN_CTRL,                KC_LEFT,KC_DOWN,KC_RGHT  \
+  ),
+
+  /* Function layer
+   * ,---------------------------------------------------------------.
+   * |   |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10|F11|F12|Num|Scr|Pau|
+   * |---------------------------------------------------------------|
+   * | M4  |M2 |M↑ |M1 |M3 |M5 |   |   |   |Stp|Ply|Prv|Nxt|Clear|Ins|
+   * |---------------------------------------------------------------|
+   * |      |M← |M↓ |M→ |MW↑|   |   |   |   |   |   |   |        |Top|
+   * |---------------------------------------------------------------|
+   * |        |MA0|MA2|MW←|MW→|   |   |   |Vo-|Vo+|Mut|      |PgU|Btm|
+   * |---------------------------------------------------------------|
+   * |    |    |    |          MW↓           |App |    | |Hom|PgD|End|
+   * `---------------------------------------------------------------'
+   */
+  [L_FN] = LAYOUT_truefox( \
+    _______,KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_F6,  KC_F7,  KC_F8,  KC_F9,  KC_F10, KC_F11, KC_F12, NUMPAD, KC_SLCK,KC_PAUS, \
+    KC_BTN4,KC_BTN2,KC_MS_U,KC_BTN1,KC_BTN3,KC_BTN5,_______,_______,_______,KC_MSTP,KC_MPLY,KC_MPRV,KC_MNXT,CLEAR,          KC_INS,  \
+    _______,KC_MS_L,KC_MS_D,KC_MS_R,KC_WH_U,_______,_______,_______,_______,_______,_______,_______,        _______,        TOP,     \
+    _______,        KC_ACL0,KC_ACL2,KC_WH_L,KC_WH_R,_______,_______,_______,KC_VOLD,KC_VOLU,KC_MUTE,_______,        KC_PGUP,BOTTOM,  \
+    _______,_______,_______,                        KC_WH_D,                KC_APP, _______,                KC_HOME,KC_PGDN,KC_END   \
+  ),
+
+  /* Numpad layer
+   * ,---------------------------------------------------------------.
+   * |Num|   |   |   |   |   |   |P7 |P8 |P9 |P- | − | = |Num|   |   |
+   * |---------------------------------------------------------------|
+   * |     |   |   |   |   |   |   |P4 |P5 |P6 |P+ | ( | ) |     |   |
+   * |---------------------------------------------------------------|
+   * |      |   |   |   |   |   |   |P1 |P2 |P3 |P* | × | PEnter |   |
+   * |---------------------------------------------------------------|
+   * |        |   |   |   |   |   |P0 |P0 |P, |P. |P/ |  ÷   |   |   |
+   * |---------------------------------------------------------------|
+   * |    |    |    |                        |    |    | |   |   |   |
+   * `---------------------------------------------------------------'
+   */
+  [L_NUMPAD] = LAYOUT_truefox( \
+    NUMPAD, _______,_______,_______,_______,_______,_______,KC_P7,  KC_P8,  KC_P9,  KC_PMNS,UC_MINS,UC_EQLS,NUMPAD, _______,_______, \
+    _______,_______,_______,_______,_______,_______,_______,KC_P4,  KC_P5,  KC_P6,  KC_PPLS,UC_LPRN,UC_RPRN,_______,        _______, \
+    _______,_______,_______,_______,_______,_______,_______,KC_P1,  KC_P2,  KC_P3,  KC_PAST,UC_MULS,        KC_PENT,        _______, \
+    _______,        _______,_______,_______,_______,_______,KC_P0,  KC_P0,  KC_PCMM,KC_PDOT,KC_PSLS,UC_DIVS,        _______,_______, \
+    _______,_______,_______,                        _______,                _______,_______,                _______,_______,_______  \
+  ),
+};
diff --git a/keyboards/whitefox/keymaps/constexpr/rules.mk b/keyboards/whitefox/keymaps/constexpr/rules.mk
new file mode 100644
index 0000000000..f1f3d2378e
--- /dev/null
+++ b/keyboards/whitefox/keymaps/constexpr/rules.mk
@@ -0,0 +1,4 @@
+BOOTMAGIC_ENABLE = no
+CONSOLE_ENABLE = yes
+TAP_DANCE_ENABLE = yes
+UNICODE_ENABLE = yes