first commit

ui_mixer.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "hid_mixer.h"
+
+#include <stdbool.h>
+
+void ui_mixer_init(void);
+void ui_mixer_draw(const mixer_state_t *st);
+/* Caret slide or marquee still in progress — keep calling draw. */
+bool ui_mixer_needs_tick(void);