From 292416976d9e69add4a68a890815e79c5a78c2da Mon Sep 17 00:00:00 2001
From: Andrew Reisner <andrew@reisner.co>
Date: Sun, 4 Oct 2026 11:34:18 -0400
Subject: [PATCH] Changes for WSL2

---
 .../keyball/keyball39/keymaps/init/keymap.c   | 60 +++++++++++++++++--
 .../keyball/keyball39/keymaps/init/rules.mk   |  1 +
 2 files changed, 56 insertions(+), 5 deletions(-)

diff --git a/keyboards/keyball/keyball39/keymaps/init/keymap.c b/keyboards/keyball/keyball39/keymaps/init/keymap.c
index 371454c0f4d920c5bdb0bfc652395eeb21d997ce..bde27bff25cb03a440a4d97848c1cdffad1c4a09 100644
--- a/keyboards/keyball/keyball39/keymaps/init/keymap.c
+++ b/keyboards/keyball/keyball39/keymaps/init/keymap.c
@@ -19,6 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include QMK_KEYBOARD_H
 
 #include "quantum.h"
+#include "os_detection.h"
 
 // Home row mods
 #define HR_A KC_A
@@ -26,7 +27,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define HR_D MT(MOD_LSFT, KC_D)
 #define HR_F MT(MOD_LCTL, KC_F)
 
-#define HR_J MT(MOD_RCTL, KC_J)
+#define HR_J MT(MOD_LCTL, KC_J)
 #define HR_K MT(MOD_RSFT, KC_K)
 #define HR_L MT(MOD_RALT, KC_L)
 #define HR_SCLN KC_SCLN
@@ -41,6 +42,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 enum {
     TD_UNDO,
+    TD_NAV,
 };
 
 // Combo for caps word
@@ -50,8 +52,48 @@ combo_t key_combos[] = {
     COMBO(capsword_combo, QK_CAPS_WORD_TOGGLE),
 };
 
+// Advanced tap dance for bottom-left thumb key: hold = momentary layer 5, double tap = toggle layer 1
+typedef enum {
+    TD_NAV_NONE,
+    TD_NAV_SINGLE_HOLD,
+    TD_NAV_DOUBLE_TAP,
+} td_nav_state_t;
+
+static td_nav_state_t nav_tap_state = TD_NAV_NONE;
+
+td_nav_state_t nav_cur_dance(tap_dance_state_t *state) {
+    if (state->count == 1) {
+        return state->pressed ? TD_NAV_SINGLE_HOLD : TD_NAV_NONE;
+    } else if (state->count == 2) {
+        return TD_NAV_DOUBLE_TAP;
+    }
+    return TD_NAV_NONE;
+}
+
+void nav_finished(tap_dance_state_t *state, void *user_data) {
+    nav_tap_state = nav_cur_dance(state);
+    switch (nav_tap_state) {
+        case TD_NAV_SINGLE_HOLD:
+            layer_on(5);
+            break;
+        case TD_NAV_DOUBLE_TAP:
+            layer_invert(1);
+            break;
+        default:
+            break;
+    }
+}
+
+void nav_reset(tap_dance_state_t *state, void *user_data) {
+    if (nav_tap_state == TD_NAV_SINGLE_HOLD) {
+        layer_off(5);
+    }
+    nav_tap_state = TD_NAV_NONE;
+}
+
 tap_dance_action_t tap_dance_actions[] = {
     [TD_UNDO] = ACTION_TAP_DANCE_DOUBLE(KC_U, KC_EUNDO),
+    [TD_NAV]  = ACTION_TAP_DANCE_FN_ADVANCED(NULL, nav_finished, nav_reset),
 };
 
 // clang-format off
@@ -61,15 +103,15 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_Q     , KC_W     , KC_E     , KC_R     , KC_T     ,                            KC_Y     , TD(TD_UNDO), KC_I   , KC_O     , KC_P     ,
         HR_A     , HR_S     , HR_D     , HR_F     , KC_G     ,                            KC_H     , HR_J     , HR_K     , HR_L     , HR_SCLN  ,
         KC_Z     , KC_X     , KC_C     , KC_V     , KC_B     ,                            KC_N     , KC_M     , KC_COMM  , KC_DOT   , KC_SLSH  ,
-        MO(5)    , KC_TAB   , KC_ESC   , LT(3,KC_TAB), LT(4,KC_BSPC), KC_LGUI,      MT(MOD_RGUI, KC_ENT), LT(4,KC_SPC), _______,  _______,  _______, KC_QUOT
+        TD(TD_NAV), KC_TAB   , KC_ESC   , LT(3,KC_TAB), LT(4,KC_BSPC), KC_LGUI,      MT(MOD_RGUI, KC_ENT), LT(4,KC_SPC), _______,  _______,  _______, KC_QUOT
     ),
 
-    // Transparent layer for HR_L GUI+N behavior
+    // Transparent layer for HR_L GUI+N behavior; GUI thumb keys become RCTL, RCTL home row mod becomes LCTL
     [1] = LAYOUT_universal(
         _______ , _______ , _______ , _______ , _______ ,                            _______ , _______ , _______ , _______ , _______ ,
+        _______ , _______ , _______ , _______ , _______ ,                            _______ , MT(MOD_LCTL, KC_J), _______ , _______ , _______ ,
         _______ , _______ , _______ , _______ , _______ ,                            _______ , _______ , _______ , _______ , _______ ,
-        _______ , _______ , _______ , _______ , _______ ,                            _______ , _______ , _______ , _______ , _______ ,
-        _______ , _______ , _______ , _______ , _______ , _______ ,          _______ , _______ , _______ , _______ , _______ , _______
+        _______ , _______ , _______ , _______ , _______ , KC_RCTL,          MT(MOD_RCTL, KC_ENT), _______ , _______ , _______ , _______ , _______
     ),
 
     // Gaming layer (removes home row mods via layer toggle)
@@ -135,6 +177,14 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
     return true;
 }
 
+bool process_detected_host_os_user(os_variant_t detected_os) {
+	if (detected_os == OS_WINDOWS)
+		layer_on(1);
+	else
+		layer_off(1);
+	return true;
+}
+
 bool caps_word_press_user(uint16_t keycode) {
     switch (keycode) {
         // Keycodes that continue Caps Word, with shift applied.
diff --git a/keyboards/keyball/keyball39/keymaps/init/rules.mk b/keyboards/keyball/keyball39/keymaps/init/rules.mk
index f7e7eb07e3294a08229e41608fabd7c91d403831..c1ed8037a4640a544c70e08ffb6e3e355b5a1ee3 100644
--- a/keyboards/keyball/keyball39/keymaps/init/rules.mk
+++ b/keyboards/keyball/keyball39/keymaps/init/rules.mk
@@ -4,4 +4,5 @@ CAPS_WORD_ENABLE = yes
 TAP_DANCE_ENABLE = yes
 COMBO_ENABLE = yes
 POINTING_DEVICE_ENABLE = yes
+OS_DETECTION_ENABLE = yes