Eric Gebhart user space and keymaps (#17487)

Co-authored-by: Drashna Jaelre <drashna@live.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/users/ericgebhart/extensions/altlocal_keys.c b/users/ericgebhart/extensions/altlocal_keys.c
new file mode 100644
index 0000000000..569a2076b5
--- /dev/null
+++ b/users/ericgebhart/extensions/altlocal_keys.c
@@ -0,0 +1,82 @@
+/*
+  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/>.
+*/
+
+// Create custom keycodes with arbitrary shifted and unshifted keys.
+// originally for dvorak on bepo. But used by beakl on qwerty now too.
+
+// Why?: Because the keycodes are actually defined on the computer. So
+// if you are trying to have dvorak, or beakl on bepo-fr, the shifted keys
+// are wrong. But, I want my dvorak, so this allows the pairing of keys into
+// a keycode that has shifted and non shifted behavior, outside of what the
+// locale map says on the computer.
+//
+// These are the keys for dvorak on bepo.  column one is the keycode and mods for
+// the unshifted key, the second column is the keycode and mods for the shifted key.
+// GR is Good Range.  It subtracts SAFE_RANGE from the keycode so we can make a
+// reasonably sized array without difficulties. The macro is for the constant declarations
+// the function is for when we use it.
+
+//make an alt_local_keys.def   - see the example.
+// Include this file where you have your process_record_user function,
+// call process_alt_local_key inside your process_record_user.
+
+#include USERSPACE_H
+#include "altlocal_keys.h"
+
+const uint16_t key_translations[][2][2] = {
+#include "altlocal_keys.def"
+};
+
+uint8_t gr(uint16_t kc){
+  return (kc - SAFE_RANGE);
+}
+
+// send the right keycode for the right mod.
+// remove the mods we are taking care of,
+// send our keycodes then restore them.
+// all so we can make dvorak keys from bepo keycodes.
+void send_keycode(uint16_t kc){
+  uint8_t tmp_mods = get_mods();
+  bool is_shifted = ( tmp_mods & (MOD_BIT(KC_LSFT)|MOD_BIT(KC_RSFT)) );
+
+  // need to turn of the shift if it is on.
+  unregister_mods((MOD_BIT(KC_LSFT)|MOD_BIT(KC_RSFT)));
+  if(is_shifted){
+    register_mods(SHIFTED_MODS(kc));
+    register_code16(SHIFTED_KEY(kc));
+    unregister_code16(SHIFTED_KEY(kc));
+    unregister_mods(SHIFTED_MODS(kc));
+  } else{
+    register_mods(UNSHIFTED_MODS(kc));
+    register_code16(UNSHIFTED_KEY(kc));
+    unregister_code16(UNSHIFTED_KEY(kc));
+    unregister_mods(UNSHIFTED_MODS(kc));
+  }
+  clear_mods();
+  register_mods(tmp_mods);
+}
+
+bool process_alt_local_key(uint16_t keycode, keyrecord_t* record) {
+  switch(keycode){
+  case ALT_LOCAL_KEYS_START ... ALT_LOCAL_KEYS_END:
+    if(record->event.pressed)
+      send_keycode(keycode);
+    unregister_code(keycode);
+    break;
+  }
+  return (true);
+}