Simple extended space cadet (#5277)

* Simplifying and Extending Space Cadet to work on Ctrl and Alt keys

* PR Review feedback

* Reverting back to keycodes

2 files changed, 167 insertions, 0 deletions

diff --git a/quantum/process_keycode/process_space_cadet.c b/quantum/process_keycode/process_space_cadet.c
new file mode 100644
index 000000000..a9c506168
--- /dev/null
+++ b/quantum/process_keycode/process_space_cadet.c
@@ -0,0 +1,146 @@
+/* Copyright 2019 Jack Humbert
+ *
+ * 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 "process_space_cadet.h"
+
+#ifndef TAPPING_TERM
+  #define TAPPING_TERM 200
+#endif
+
+// ********** OBSOLETE DEFINES, STOP USING! (pls?) **********
+// Shift / paren setup
+#ifndef LSPO_KEY
+  #define LSPO_KEY KC_9
+#endif
+#ifndef RSPC_KEY
+  #define RSPC_KEY KC_0
+#endif
+
+// Shift / Enter setup
+#ifndef SFTENT_KEY
+  #define SFTENT_KEY KC_ENT
+#endif
+
+#ifdef DISABLE_SPACE_CADET_MODIFIER
+  #ifndef LSPO_MOD
+    #define LSPO_MOD KC_TRNS
+  #endif
+  #ifndef RSPC_MOD
+    #define RSPC_MOD KC_TRNS
+  #endif
+#else
+  #ifndef LSPO_MOD
+    #define LSPO_MOD KC_LSFT
+  #endif
+  #ifndef RSPC_MOD
+    #define RSPC_MOD KC_RSFT
+  #endif
+#endif
+// **********************************************************
+
+// Shift / paren setup
+#ifndef LSPO_KEYS
+  #define LSPO_KEYS KC_LSFT, LSPO_MOD, LSPO_KEY
+#endif
+#ifndef RSPC_KEYS
+  #define RSPC_KEYS KC_RSFT, RSPC_MOD, RSPC_KEY
+#endif
+
+// Control / paren setup
+#ifndef LCPO_KEYS
+  #define LCPO_KEYS KC_LCTL, KC_LCTL, KC_9
+#endif
+#ifndef RCPO_KEYS
+  #define RCPO_KEYS KC_RCTL, KC_RCTL, KC_0
+#endif
+
+// Alt / paren setup
+#ifndef LAPO_KEYS
+  #define LAPO_KEYS KC_LALT, KC_LALT, KC_9
+#endif
+#ifndef RAPO_KEYS
+  #define RAPO_KEYS KC_RALT, KC_RALT, KC_0
+#endif
+
+// Shift / Enter setup
+#ifndef SFTENT_KEYS
+  #define SFTENT_KEYS KC_RSFT, KC_TRNS, SFTENT_KEY
+#endif
+
+static uint8_t sc_last = 0;
+static uint16_t sc_timer = 0;
+
+void perform_space_cadet(keyrecord_t *record, uint8_t normalMod, uint8_t tapMod, uint8_t keycode) {
+  if (record->event.pressed) {
+    sc_last = normalMod;
+    sc_timer = timer_read ();
+    if (IS_MOD(normalMod)) {
+      register_mods(MOD_BIT(normalMod));
+    }
+  }
+  else {
+    if (IS_MOD(normalMod)) {
+      unregister_mods(MOD_BIT(normalMod));
+    }
+
+    if (sc_last == normalMod && timer_elapsed(sc_timer) < TAPPING_TERM) {
+      if (IS_MOD(tapMod)) {
+        register_mods(MOD_BIT(tapMod));
+      }
+      tap_code(keycode);
+      if (IS_MOD(tapMod)) {
+        unregister_mods(MOD_BIT(tapMod));
+      }
+    }
+  }
+}
+
+bool process_space_cadet(uint16_t keycode, keyrecord_t *record) {
+  switch(keycode) {
+    case KC_LSPO: {
+      perform_space_cadet(record, LSPO_KEYS);
+      return false;
+    }
+    case KC_RSPC: {
+      perform_space_cadet(record, RSPC_KEYS);
+      return false;
+    }
+    case KC_LCPO: {
+      perform_space_cadet(record, LCPO_KEYS);
+      return false;
+    }
+    case KC_RCPC: {
+      perform_space_cadet(record, RCPO_KEYS);
+      return false;
+    }
+    case KC_LAPO: {
+      perform_space_cadet(record, LAPO_KEYS);
+      return false;
+    }
+    case KC_RAPC: {
+      perform_space_cadet(record, RAPO_KEYS);
+      return false;
+    }
+    case KC_SFTENT: {
+      perform_space_cadet(record, SFTENT_KEYS);
+      return false;
+    }
+    default: {
+      sc_last = 0;
+      break;
+    }
+  }
+  return true;
+}
diff --git a/quantum/process_keycode/process_space_cadet.h b/quantum/process_keycode/process_space_cadet.h
new file mode 100644
index 000000000..3f08b8002
--- /dev/null
+++ b/quantum/process_keycode/process_space_cadet.h
@@ -0,0 +1,21 @@
+/* Copyright 2019 Jack Humbert
+ *
+ * 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 "quantum.h"
+
+void perform_space_cadet(keyrecord_t *record, uint8_t normalMod, uint8_t tapMod, uint8_t keycode);
+bool process_space_cadet(uint16_t keycode, keyrecord_t *record);