1 files changed, 105 insertions, 0 deletions

diff --git a/users/replicaJunction/features/caps_word.c b/users/replicaJunction/features/caps_word.c
new file mode 100644
index 000000000..536da81ec
--- /dev/null
+++ b/users/replicaJunction/features/caps_word.c
@@ -0,0 +1,105 @@
+/* Copyright 2021 Joshua T.
+ *
+ * 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 "caps_word.h"
+
+static bool is_caps_word_on = false;
+
+bool is_caps_word_enabled(void) {
+    return is_caps_word_on;
+}
+
+void enable_caps_word(void) {
+    if (is_caps_word_on) return;
+    is_caps_word_on = true;
+    tap_code(KC_CAPS);
+}
+
+void disable_caps_word(void) {
+    if (!is_caps_word_on) return;
+    is_caps_word_on = false;
+    tap_code(KC_CAPS);
+}
+
+void toggle_caps_word(void) {
+    if (is_caps_word_on) {
+        disable_caps_word();
+    }
+    else {
+        enable_caps_word();
+    }
+}
+
+bool should_terminate_caps_word(uint16_t keycode, const keyrecord_t *record) {
+    switch (keycode) {
+        // Keycodes which should not disable caps word mode
+        case KC_A ... KC_Z:
+        case KC_1 ... KC_0:
+        case KC_MINS:
+        case KC_UNDS:
+        case KC_BSPC:
+            return false;
+
+        default:
+            if (record->event.pressed) {
+                return true;
+            }
+            return false;
+    }
+
+    // Should be unreachable
+    return false;
+}
+
+
+bool process_record_caps_word(uint16_t keycode, const keyrecord_t *record) {
+    // Nothing in this function acts on key release
+    if (!record->event.pressed) {
+        return true;
+    }
+
+    // Handle the custom keycodes that go with this feature
+    if (keycode == CAPWORD) {
+        enable_caps_word();
+        return false;
+    }
+
+    // If the behavior isn't enabled and the keypress isn't a keycode to
+    // toggle the behavior, allow QMK to handle the keypress as usual
+    if (!is_caps_word_on) {
+        return true;
+    }
+
+    // Get the base keycode of a mod or layer tap key
+    switch (keycode) {
+        case QK_MOD_TAP ... QK_MOD_TAP_MAX:
+        case QK_LAYER_TAP ... QK_LAYER_TAP_MAX:
+        case QK_TAP_DANCE ... QK_TAP_DANCE_MAX:
+            // Earlier return if this has not been considered tapped yet
+            if (record->tap.count == 0)
+                return true;
+            keycode = keycode & 0xFF;
+            break;
+        default:
+            break;
+    }
+
+    if (should_terminate_caps_word(keycode, record)) {
+        disable_caps_word();
+    }
+
+    return true;
+}