1 files changed, 48 insertions, 0 deletions
diff --git a/keyboards/helix/rev3_4rows/rev3_4rows.c b/keyboards/helix/rev3_4rows/rev3_4rows.c
new file mode 100644
index 0000000000..cf183366d6
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/rev3_4rows.c
@@ -0,0 +1,48 @@
+/* Copyright 2020 yushakobo
+ *
+ * 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 "helix.h"
+
+bool is_mac_mode(void) {
+    return keymap_config.swap_lalt_lgui == false;
+}
+
+void set_mac_mode(bool macmode) {
+    if (macmode) {
+        /* The result is the same as pressing the AG_NORM(=MAGIC_UNSWAP_ALT_GUI) key. */
+        /* https://github.com/qmk/qmk_firmware/blob/fb4a6ad30ea7a648acd59793ed4a30c3a8d8dc32/quantum/process_keycode/process_magic.c#L123-L124 */
+        keymap_config.swap_lalt_lgui = keymap_config.swap_ralt_rgui = false;
+    } else {
+        /* The result is the same as pressing the AG_SWAP(=MAGIC_SWAP_ALT_GUI) key. */
+        /* https://github.com/qmk/qmk_firmware/blob/fb4a6ad30ea7a648acd59793ed4a30c3a8d8dc32/quantum/process_keycode/process_magic.c#L80-L81 */
+        keymap_config.swap_lalt_lgui = keymap_config.swap_ralt_rgui = true;
+    }
+}
+
+void dip_switch_update_kb(uint8_t index, bool active) {
+    switch (index) {
+    case 0:
+        if(active) { // Left no.1  Helix rev3 common
+            set_mac_mode(false);
+        } else {
+            set_mac_mode(true);
+        }
+        break;
+    default: // Left no.2 or Right no.1 or Right no.2 for user/keymap
+        dip_switch_update_user(index, active);
+        break;
+    }
+}