1 files changed, 37 insertions, 0 deletions
diff --git a/users/ericgebhart/extensions/swapper.h b/users/ericgebhart/extensions/swapper.h
new file mode 100644
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+++ b/users/ericgebhart/extensions/swapper.h
@@ -0,0 +1,37 @@
+#pragma once
+/*
+  Copyright 2018-2022 Eric Gebhart <e.a.gebhart@gmail.com>
+
+  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 QMK_KEYBOARD_H
+#include USERSPACE_H
+
+typedef struct {
+    bool     active;
+    uint16_t mod;
+    uint16_t forward;
+    uint16_t reverse;
+    uint16_t forward_trigger;
+    uint16_t reverse_trigger;
+} swapper_state_t;
+extern swapper_state_t swapper_states[];
+extern uint8_t         NUM_SWAPPER_STATES;
+
+#undef SWAPPER_KEY
+#define SWAPPER_KEY(KC, REVERSE_IT_KC, FWD_KC, REV_KC, MOD)     \
+  {false, MOD, FWD_KC, REV_KC, KC, REVERSE_IT_KC},
+
+void process_swappers(uint16_t keycode, keyrecord_t *record);