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-rw-r--r--quantum/keymap_common.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/quantum/keymap_common.c b/quantum/keymap_common.c
index 780c71ab9b..008177bbee 100644
--- a/quantum/keymap_common.c
+++ b/quantum/keymap_common.c
@@ -36,6 +36,31 @@ extern keymap_config_t keymap_config;
#include <inttypes.h>
+uint8_t extract_mod_bits(uint16_t code) {
+ switch (code) {
+ case QK_MODS ... QK_MODS_MAX:
+ break;
+ default:
+ return 0;
+ }
+
+ uint8_t mods_to_send = 0;
+
+ if (code & QK_RMODS_MIN) { // Right mod flag is set
+ if (code & QK_LCTL) mods_to_send |= MOD_BIT(KC_RCTL);
+ if (code & QK_LSFT) mods_to_send |= MOD_BIT(KC_RSFT);
+ if (code & QK_LALT) mods_to_send |= MOD_BIT(KC_RALT);
+ if (code & QK_LGUI) mods_to_send |= MOD_BIT(KC_RGUI);
+ } else {
+ if (code & QK_LCTL) mods_to_send |= MOD_BIT(KC_LCTL);
+ if (code & QK_LSFT) mods_to_send |= MOD_BIT(KC_LSFT);
+ if (code & QK_LALT) mods_to_send |= MOD_BIT(KC_LALT);
+ if (code & QK_LGUI) mods_to_send |= MOD_BIT(KC_LGUI);
+ }
+
+ return mods_to_send;
+}
+
/* converts key to action */
action_t action_for_key(uint8_t layer, keypos_t key) {
// 16bit keycodes - important