Function tui_draw_left

ds4_eval.c:2001–2068

        }
    }
    return NULL;
}

static void tui_start_input(void) {
    if (!isatty(STDIN_FILENO)) return;
    if (tcgetattr(STDIN_FILENO, &global_input.orig_termios) != 0) return;

    /* The input thread is intentionally boring: it never writes to the terminal,
     * it only queues navigation/control state.  Rendering remains owned by the
     * main thread and follows the same full-frame redraw path as the
     * noninteractive UI. Keep ISIG set so Ctrl-C still restores the alternate
     * screen. */
    struct termios raw = global_input.orig_termios;
    raw.c_lflag &= ~(ICANON | ECHO);
    raw.c_cc[VMIN] = 0;
    raw.c_cc[VTIME] = 1;
    if (tcsetattr(STDIN_FILENO, TCSANOW, &raw) != 0) return;

    pthread_mutex_lock(&global_input.mu);
    global_input.move_delta = 0;
    global_input.enter_pressed = false;
    global_input.pause_pressed = false;
    global_input.quit_pressed = false;
    pthread_mutex_unlock(&global_input.mu);

    global_input.raw_mode = true;
    global_input.enabled = true;
    global_input.running = 1;
    if (pthread_create(&global_input.thread, NULL, input_thread_main, NULL) == 0) {
        global_input.thread_started = true;
    } else {
        global_input.running = 0;
        global_input.enabled = false;
        tcsetattr(STDIN_FILENO, TCSANOW, &global_input.orig_termios);
        global_input.raw_mode = false;
    }
}

static void tui_stop_input(void) {
    if (global_input.thread_started) {
        global_input.running = 0;
        pthread_join(global_input.thread, NULL);
        global_input.thread_started = false;
    }
    if (global_input.raw_mode) {
        tcsetattr(STDIN_FILENO, TCSANOW, &global_input.orig_termios);
        global_input.raw_mode = false;
    }
    global_input.enabled = false;
}

static void tui_consume_input(eval_ui *ui) {
    if (!ui->enabled || !global_input.enabled) return;

    pthread_mutex_lock(&global_input.mu);
    int move = global_input.move_delta;
    bool enter = global_input.enter_pressed;
    bool pause = global_input.pause_pressed;