#include <Elementary.h>
#include <time.h>
typedef struct Progressbar_Example
{
   Evas_Object *pb1;
   Evas_Object *pb2; 
   Evas_Object *pb3;
   Evas_Object *pb4;
   Evas_Object *pb5;
   Evas_Object *pb6; 
   Evas_Object *pb7;
   Evas_Object *pb8; 
   Eina_Bool    run;
   Ecore_Timer *timer;
} Progressbar_Example;
static Progressbar_Example example_data;
static Eina_Bool
_progressbar_example_value_set(void *data)
{
   double progress;
   if (progress < 1.0) progress += 0.0123;
   else progress = 0.0;
   
   if (progress < 1.0) return ECORE_CALLBACK_RENEW;
   example_data.run = 0;
   return ECORE_CALLBACK_CANCEL;
}
static void
_progressbar_example_start(void        *data,
                           Evas_Object *obj,
                           void        *event_info)
{
   if (!example_data.run)
     {
        example_data.timer = ecore_timer_add(
           0.1, _progressbar_example_value_set, NULL);
        example_data.run = EINA_TRUE;
     }
}
static void
_progressbar_example_stop(void        *data,
                          Evas_Object *obj,
                          void        *event_info)
{
   if (example_data.run)
     {
        ecore_timer_del(example_data.timer);
        example_data.run = EINA_FALSE;
     }
}
static char *
_progress_format_cb(double val)
{
   static char buf[30];
   int files = (1-val)*14000;
   if (snprintf(buf, 30, "%i files left", files) > 0)
     return strdup(buf);
   return NULL;
}
static void
_progress_format_free(char *str)
{
   free(str);
}
static void
_on_changed(void        *data,
            Evas_Object *obj,
            void        *event_info)
{
   static char buf[30];
   static time_t tstart = 0;
   static double eta = 0;
   time_t tdiff;
   double val;
   Evas_Object *label =  (Evas_Object *)data;
   if (val == 0)
     {
        tstart = 0;
        elm_object_text_set(label, "ETA: N/A");
        return;
     }
   
   if (tstart == 0)
     {
        tstart = time(NULL);
     }
   
   tdiff = time(NULL) - tstart;
   eta = 0.3*eta + 0.7*(tdiff/val)*(1-val);
   snprintf(buf, 30, "ETA: %.0fs", eta);
   elm_object_text_set(label, buf);
}
static void
_on_done(void        *data,
         Evas_Object *obj,
         void        *event_info)
{
   _progressbar_example_stop(NULL, NULL, NULL);
}
EAPI_MAIN int
elm_main(int    argc,
         char **argv)
{
   Evas_Object *win, *pb, *bx, *hbx, *bt, *bt_bx, *ic1, *ic2, *label;
   char buf[PATH_MAX];
   evas_object_smart_callback_add(win, "delete,request", _on_done, NULL);
   evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(bx);
   
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
   evas_object_show(pb);
   example_data.pb1 = pb;
   
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_object_text_set(pb, "Infinite bounce");
   evas_object_show(pb);
   example_data.pb2 = pb;
   evas_object_size_hint_aspect_set(ic1, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
   
   elm_object_text_set(pb, "Label");
                                            _progress_format_free);
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(ic1);
   evas_object_show(pb);
   example_data.pb3 = pb;
   
   elm_object_text_set(pb, "Label");
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(pb);
   elm_object_text_set(label, "ETA: N/A");
   evas_object_size_hint_align_set(label, 0.5, 0.5);
   evas_object_size_hint_weight_set(label, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(label);
   evas_object_smart_callback_add(pb, "changed", _on_changed, label);
   example_data.pb4 = pb;
   evas_object_size_hint_weight_set(hbx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_size_hint_align_set(hbx, EVAS_HINT_FILL, EVAS_HINT_FILL);
   evas_object_show(hbx);
   
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, EVAS_HINT_FILL);
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_object_text_set(pb, "percent");
   evas_object_show(pb);
   example_data.pb5 = pb;
   
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_object_text_set(pb, "Infinite bounce");
   evas_object_show(pb);
   example_data.pb6 = pb;
   evas_object_size_hint_aspect_set(ic2, EVAS_ASPECT_CONTROL_HORIZONTAL, 1, 1);
   
   elm_object_text_set(pb, "Label");
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(ic2);
   evas_object_show(pb);
   example_data.pb7 = pb;
   
   elm_object_text_set(pb, "Style: wheel");
   evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
   evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(pb);
   example_data.pb8 = pb;
   evas_object_size_hint_weight_set(bt_bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_show(bt_bx);
   elm_object_text_set(bt, "Start");
   evas_object_smart_callback_add(bt, "clicked", _progressbar_example_start,
                                  NULL);
   evas_object_show(bt);
   elm_object_text_set(bt, "Stop");
   evas_object_smart_callback_add(bt, "clicked", _progressbar_example_stop,
                                  NULL);
   evas_object_show(bt);
   evas_object_show(win);
   return 0;
}