[Keymap] add brandonschlack userspace and keymaps (#10411)

users/brandonschlack/tap_dances.h

@@ -0,0 +1,52 @@
+/* Copyright 2020 Brandon Schlack
+ *
+ * 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/>.
+ */
+#pragma once
+#include "brandonschlack.h"
+#ifdef TAP_DANCE_ENABLE
+#   include "process_keycode/process_tap_dance.h"
+#endif
+
+enum tap_dance_states {
+    SINGLE_TAP = 1,
+    SINGLE_HOLD = 2,
+    DOUBLE_TAP = 3,
+    DOUBLE_HOLD = 4,
+    DOUBLE_SINGLE_TAP = 5,
+    TRIPLE_TAP = 6,
+    TRIPLE_HOLD = 7
+};
+
+int cur_dance (qk_tap_dance_state_t *state);
+void process_tap_dance_keycode (bool reset, uint8_t toggle_layer);
+
+/* Tap Dance: Trigger Layer
+ *
+ * Toggles Layer based on given trigger (Single Hold, Double Tap, Double Hold, etc).
+ * Uses process_tap_dance_keycode() to allow keycode defines based on layer
+ */
+typedef struct {
+    uint8_t  trigger;
+    uint8_t  layer;
+    uint8_t  state;
+} qk_tap_dance_trigger_layer_t;
+
+#define ACTION_TAP_DANCE_TRIGGER_LAYER(trigger, layer) { \
+    .fn = { NULL, td_trigger_layer_finished, td_trigger_layer_reset }, \
+    .user_data = (void *)&((qk_tap_dance_trigger_layer_t) { trigger, layer, 0 }), \
+}
+
+void td_trigger_layer_finished (qk_tap_dance_state_t *state, void *user_data);
+void td_trigger_layer_reset (qk_tap_dance_state_t *state, void *user_data);