Function sdl_loop

bsp/simulator/drivers/sdl_fb.c:256–476

static pthread_cond_t sdl_ok_event;

static void *sdl_loop(void *lpParam)
#endif
{
    int quit = 0;
    SDL_Event event;
    int state = 0;
    rt_device_t device;
    int timeout = 1000000;

    int last_x = -1, last_y = -1;

    int motion_x, motion_y;
    int motion_button = 0;
    int motion_tick = 50;

    int mouse_id = 1;

#ifndef _WIN32
    sigset_t  sigmask, oldmask;
    /* set the getchar without buffer */
    sigfillset(&sigmask);
    pthread_sigmask(SIG_BLOCK, &sigmask, &oldmask);
    pthread_mutex_lock(&sdl_ok_mutex);
#endif

    sdlfb_hw_init();

    device = rt_device_find("sdl");
    RT_ASSERT(device);
    rtgui_graphic_set_device(device);
#ifdef _WIN32
    SetEvent(sdl_ok_event);
#else
    pthread_cond_signal(&sdl_ok_event);
    pthread_mutex_unlock(&sdl_ok_mutex);
#endif
    /* handle SDL event */
    while (!quit)
    {
        if (motion_button & RTGUI_MOUSE_BUTTON_DOWN)
        {
            timeout = motion_tick - SDL_GetTicks();
        }
        else
        {
            timeout = 1000 * 1000;
        }

        int tick = SDL_GetTicks();
        SDL_WaitEventTimeout(&event, timeout);
        if (SDL_GetTicks() >= motion_tick && (motion_button & RTGUI_MOUSE_BUTTON_DOWN)) /* whether timeout */
        {
            /* sendout motion event */
            struct rtgui_event_mouse emouse;

            emouse.parent.type = RTGUI_EVENT_MOUSE_MOTION;
            emouse.parent.sender = RT_NULL;
            emouse.wid = RT_NULL;