3 files changed, 28 insertions, 8 deletions

diff --git a/common/action.c b/common/action.c
index aadf5e16e..710300eb3 100644
--- a/common/action.c
+++ b/common/action.c
@@ -201,6 +201,19 @@ void action_exec(keyevent_t event)
     }
 }
 
+static action_t get_action(key_t key)
+{
+    action_t action = keymap_get_action(current_layer, key.pos.row, key.pos.col);
+
+    /* Transparently use default layer */
+    if (action.code == ACTION_TRANSPARENT) {
+        // TODO: layer stacking
+        action = keymap_get_action(default_layer, key.pos.row, key.pos.col);
+        debug("TRNASPARENT: "); debug_hex16(action.code); debug("\n");
+    }
+    return action;
+}
+
 static void process_action(keyrecord_t *record)
 {
     keyevent_t event = record->event;
@@ -208,8 +221,7 @@ static void process_action(keyrecord_t *record)
 
     if (IS_NOEVENT(event)) { return; }
 
-    action_t action = keymap_get_action(current_layer, event.key.pos.row, event.key.pos.col);
-    //debug("action: "); debug_hex16(action.code); if (event.pressed) debug("d\n"); else debug("u\n");
+    action_t action = get_action(event.key);
     debug("ACTION: "); debug_action(action); debug("\n");
 
     switch (action.kind.id) {
@@ -809,7 +821,8 @@ void layer_switch(uint8_t new_layer)
 
 bool is_tap_key(key_t key)
 {
-    action_t action = keymap_get_action(current_layer, key.pos.row, key.pos.col);
+    action_t action = get_action(key);
+
     switch (action.kind.id) {
         case ACT_LMODS_TAP:
         case ACT_RMODS_TAP:
diff --git a/common/action.h b/common/action.h
index ac44b1a79..bb44049ad 100644
--- a/common/action.h
+++ b/common/action.h
@@ -106,12 +106,14 @@ Keyboard Keys
 -------------
 ACT_LMODS(0000):
 0000|0000|000000|00    No action
+0000|0000|000000|01    Transparent
 0000|0000| keycode     Key
 0000|mods|000000|00    Left mods
 0000|mods| keycode     Key & Left mods
 
 ACT_RMODS(0001):
-0001|0000|000000|00    No action
+0001|0000|000000|00    No action(not used)
+0001|0000|000000|01    Transparent(not used)
 0001|0000| keycode     Key(no used)
 0001|mods|000000|00    Right mods
 0001|mods| keycode     Key & Right mods
@@ -207,6 +209,7 @@ enum action_kind_id {
 
 /* action utility */
 #define ACTION_NO                       0
+#define ACTION_TRANSPARENT              1
 #define ACTION(kind, param)             ((kind)<<12 | (param))
 #define MODS4(mods)                     (((mods)>>4 | (mods)) & 0x0F)
 
diff --git a/common/keycode.h b/common/keycode.h
index 4f57a5887..364679994 100644
--- a/common/keycode.h
+++ b/common/keycode.h
@@ -28,6 +28,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define IS_KEY(code)             (KC_A         <= (code) && (code) <= KC_EXSEL)
 #define IS_MOD(code)             (KC_LCTRL     <= (code) && (code) <= KC_RGUI)
 
+
+#define IS_SPECIAL(code)         ((0xA5 <= (code) && (code) <= 0xDF) || (0xE8 <= (code) && (code) <= 0xFF))
+#define IS_SYSTEM(code)          (KC_POWER     <= (code) && (code) <= KC_WAKE)
+#define IS_CONSUMER(code)        (KC_MUTE      <= (code) && (code) <= KC_WFAV)
 #define IS_FN(code)              (KC_FN0       <= (code) && (code) <= KC_FN31)
 #define IS_MOUSEKEY(code)        (KC_MS_UP     <= (code) && (code) <= KC_MS_ACCEL2)
 #define IS_MOUSEKEY_MOVE(code)   (KC_MS_UP     <= (code) && (code) <= KC_MS_RIGHT)
@@ -35,10 +39,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define IS_MOUSEKEY_WHEEL(code)  (KC_MS_WH_UP  <= (code) && (code) <= KC_MS_WH_RIGHT)
 #define IS_MOUSEKEY_ACCEL(code)  (KC_MS_ACCEL0 <= (code) && (code) <= KC_MS_ACCEL2)
 
-#define IS_SPECIAL(code)         ((0xA5 <= (code) && (code) <= 0xDF) || (0xE8 <= (code) && (code) <= 0xFF))
-#define IS_CONSUMER(code)        (KC_MUTE      <= (code) && (code) <= KC_WFAV)
-#define IS_SYSTEM(code)          (KC_POWER     <= (code) && (code) <= KC_WAKE)
-
 #define MOD_BIT(code)   (1<<MOD_INDEX(code))
 #define MOD_INDEX(code) ((code) & 0x07)
 #define FN_BIT(code)    (1<<FN_INDEX(code))
@@ -149,6 +149,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define KC_WSTP KC_WWW_STOP
 #define KC_WREF KC_WWW_REFRESH
 #define KC_WFAV KC_WWW_FAVORITES
+/* Transparent */
+#define KC_TRANSPARENT  1
+#define KC_TRNS KC_TRANSPARENT
+
 
 
 /* USB HID Keyboard/Keypad Usage(0x07) */