// gcc file.c -o a.out $(pkg-config --cflags --libs elementary)
//
// TESTS:
//
// time ./a.out 10 500
// perf record -- ./a.out 10 500
// valgrind --tool=massif ./a.out 10 500

#include <Elementary.h>


typedef struct
{
   Evas_Object *gl;
   Elm_Object_Item *it1, *it2;
   int state;
} Bounce;

static Bounce _bounce;
static int _count = 0;

static unsigned long long frames = 0;

static void
_bounce_cb_frame(void *data EINA_UNUSED, Evas *e EINA_UNUSED, void *event_info EINA_UNUSED)
{
   frames++;
}

static Eina_Bool
_bounce_cb(void *data)
{
   Bounce *bounce = data;
   bounce->state++;
   if (bounce->state & 0x1)
     elm_genlist_item_bring_in(bounce->it2, ELM_GENLIST_ITEM_SCROLLTO_MIDDLE);
   else
     elm_genlist_item_bring_in(bounce->it1, ELM_GENLIST_ITEM_SCROLLTO_MIDDLE);

   static struct timespec t0;
   if (bounce->state == 2)
     {
        evas_event_callback_add(evas_object_evas_get(bounce->gl),
                                EVAS_CALLBACK_RENDER_FLUSH_POST,
                                _bounce_cb_frame, NULL);
        clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &t0);
     }

   if (bounce->state > _count)
     {
        struct timespec t;
        unsigned long long tll, t0ll, tdll;

        clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &t);
        t0ll = (t0.tv_sec * 1000000000) + t0.tv_nsec;
        tll = (t.tv_sec * 1000000000) + t.tv_nsec;
        tdll = tll - t0ll;
        printf("NS since 2 = %llu , %llu frames = %llu / frame\n",
               tdll, frames, tdll / (unsigned long long)frames);
        elm_exit();
     }
   return EINA_TRUE;
}

static void
_btbounce_cb(void *data, Evas_Object *obj, void *event_info EINA_UNUSED)
{
   Ecore_Timer *tim = evas_object_data_get(obj, "timer");
   if (!tim)
     {
        _bounce_cb(data);
        evas_object_data_set(obj, "timer", tim);
     }
}

static void
_btdel_cb(void *data, Evas *e EINA_UNUSED, Evas_Object *obj, void *event_info EINA_UNUSED)
{
   Bounce *bounce = data;
   Ecore_Timer *tim = evas_object_data_get(obj, "timer");
   if (tim)
     {
        ecore_timer_del(tim);
        evas_object_data_del(obj, "timer");
     }
   free(bounce);
}


static void
_win_close_cb(void *data,
              Evas_Object *obj EINA_UNUSED,
              void *info EINA_UNUSED)
{
   elm_exit();
}

static
Evas_Object *_get(void *data , Evas_Object *obj, const char *part)
{
   Evas_Object *fr, *bx, *ic, *bt, *ck;

   if (strcmp(part, "elm.swallow.content") != 0) return NULL;

   fr = elm_frame_add(obj);
   elm_layout_text_set(fr, NULL, "A Frame");

   bx = elm_box_add(fr);
   elm_box_horizontal_set(bx, EINA_TRUE);

   ic = elm_icon_add(bx);
   elm_icon_standard_set(ic, "home");
   evas_object_size_hint_min_set(ic, 32, 32);
   evas_object_size_hint_align_set(ic, 0.5, EVAS_HINT_FILL);
   evas_object_show(ic);
   elm_box_pack_end(bx, ic);

   bt = elm_button_add(bx);
   evas_object_size_hint_align_set(bt, EVAS_HINT_FILL, EVAS_HINT_FILL);
   evas_object_size_hint_weight_set(bt, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_layout_text_set(bt, NULL, "Click Me");
   evas_object_show(bt);
   elm_box_pack_end(bx, bt);

   ck = elm_check_add(bx);
   evas_object_size_hint_align_set(ck, EVAS_HINT_FILL, EVAS_HINT_FILL);
   evas_object_size_hint_weight_set(ck, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_layout_text_set(ck, NULL, "some checkbox");
   evas_object_show(ck);
   elm_box_pack_end(bx, ck);

   elm_layout_content_set(fr, NULL, bx);
   evas_object_size_hint_min_set(fr, 100, 100);

   return fr;
}

static Elm_Object_Item *_first, *_last;

EAPI_MAIN int
elm_main(int argc, char**argv)
{
   Elm_Genlist_Item_Class *itc = elm_genlist_item_class_new();
   itc->item_style = "full";
   itc->func.content_get = _get;
   int max = 300;

   if (argc >= 2)
     _count = atoi(argv[1]);
   if (argc >= 3)
     max = atoi(argv[2]);

   Evas_Object *w = elm_win_util_standard_add("test", "test");
   elm_win_autodel_set(w, EINA_TRUE);
   evas_object_smart_callback_add(w, "delete,request", _win_close_cb, NULL);

   Evas_Object *g = elm_genlist_add(w);
   evas_object_size_hint_weight_set(g, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_size_hint_align_set(g, EVAS_HINT_FILL, EVAS_HINT_FILL);
   elm_win_resize_object_add(w, g);
   evas_object_show(g);
   evas_object_show(w);


   _first = elm_genlist_item_append(g, itc, NULL, NULL, ELM_GENLIST_ITEM_NONE, NULL, NULL);
   for (unsigned int i = 0; i < max; i++)
     elm_genlist_item_append(g, itc, NULL, NULL, ELM_GENLIST_ITEM_NONE, NULL, NULL);
   _last = elm_genlist_item_append(g, itc, NULL, NULL, ELM_GENLIST_ITEM_NONE, NULL, NULL);

   _bounce.gl =g;
   _bounce.it1 =_first;
   _bounce.it2 =_last;

   elm_win_maximized_set(w, 1);

    ecore_timer_add(2.0, _bounce_cb, &_bounce);
   elm_run();
   return 0;
}
ELM_MAIN()