1 files changed, 98 insertions, 0 deletions
diff --git a/users/muppetjones/features/dancelayers.c b/users/muppetjones/features/dancelayers.c
new file mode 100644
index 0000000000..e7e5f2a6f2
--- /dev/null
+++ b/users/muppetjones/features/dancelayers.c
@@ -0,0 +1,98 @@
+/* Copyright 2020 Stephen J. Bush
+ *
+ * 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/>.
+ */
+
+#ifdef TAP_DANCE_ENABLE
+
+#    include QMK_KEYBOARD_H
+#    include "muppetjones.h"
+#    include "dancelayers.h"
+
+// Initialize tap structure associated with example tap dance key
+static td_tap_t lyr_tap_state = {.is_press_action = true, .state = TD_NONE};
+
+/* @brief Determine the current tap dance state
+ * @param A tap dance state struct.
+ * @return A struct.
+ */
+td_state_t cur_dance(qk_tap_dance_state_t *state) {
+    switch (state->count) {
+        case 1:
+            if (!state->pressed)
+                return TD_1X_TAP;
+            else
+                return TD_1X_HOLD;
+        case 2:
+            return TD_2X_TAP;
+            break;
+        case 3:
+            return TD_3X_TAP;
+            break;
+        case 4:
+            return TD_4X_TAP;
+            break;
+        default:
+            return TD_UNKNOWN;
+    }
+}
+
+// Functions that control what our tap dance key does
+__attribute__((weak)) void td_layer_finished(qk_tap_dance_state_t *state, void *user_data) {
+    lyr_tap_state.state = cur_dance(state);
+    switch (lyr_tap_state.state) {
+        case TD_1X_TAP:
+            if (layer_state_is(_MOUSE))
+                layer_off(_MOUSE);
+            else
+                layer_on(_MOUSE);
+            break;
+        case TD_1X_HOLD:
+            layer_on(_ADJUST);
+            break;
+        case TD_2X_TAP:
+            // Toggle lower layer
+            if (layer_state_is(_LOWER))
+                layer_off(_LOWER);
+            else
+                layer_on(_LOWER);
+            break;
+        case TD_3X_TAP:
+            // Toggle lower layer
+            if (layer_state_is(_RAISE))
+                layer_off(_RAISE);
+            else
+                layer_on(_RAISE);
+            break;
+        case TD_4X_TAP:
+            // Toggle lower layer
+            if (layer_state_is(_ADJUST))
+                layer_off(_ADJUST);
+            else
+                layer_on(_ADJUST);
+            break;
+        default:
+            break;
+    }
+}
+
+__attribute__((weak)) void td_layer_reset(qk_tap_dance_state_t *state, void *user_data) {
+    // If the key was held down and now is released then switch off the layer
+    if (lyr_tap_state.state == TD_1X_HOLD) {
+        layer_off(_ADJUST);
+    }
+    lyr_tap_state.state = TD_NONE;
+}
+
+#endif