genlist_example_02.c

//Compile with:
//gcc -g genlist_example_02.c -o genlist_example_02 `pkg-config --cflags --libs elementary`

#include <Elementary.h>
#include <time.h>

#define N_ITEMS 300

static Elm_Genlist_Item_Class *_itc = NULL;

static char *
_item_label_get(void *data, Evas_Object *obj EINA_UNUSED, const char *part EINA_UNUSED)
{
   time_t t = (time_t)ecore_time_unix_get();
   char buf[256];
   int i = (int)(uintptr_t)data;
   if (i % 2)
     {
        int n;
        snprintf(buf, sizeof(buf), "Very Long Item # %i - realized at %s", i, ctime(&t));
        n = strlen(buf);
        buf[n - 1] = '\0';
     }
   else
     snprintf(buf, sizeof(buf), "short item # %i", i);
   return strdup(buf);
}

static Evas_Object *
_item_content_get(void *data EINA_UNUSED, Evas_Object *obj, const char *part)
{
   Evas_Object *ic = elm_icon_add(obj);

   if (!strcmp(part, "elm.swallow.icon"))
     elm_icon_standard_set(ic, "clock");

   evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
   return ic;
}

static void
_item_sel_cb(void *data, Evas_Object *obj, void *event_info)
{
   printf("sel item data [%p] on genlist obj [%p], item pointer [%p]\n",
          data, obj, event_info);
}

static void
_show_status_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;
   Evas_Coord x, y, w, h, mx, my;
   Elm_Object_Item *glit = elm_genlist_selected_item_get(list);

   const Eina_List *selected, *l;
   Eina_List *realized;
   printf("\nfirst selected item: %p\n", glit);

   selected = elm_genlist_selected_items_get(list);
   printf("all selected items (%d): ", eina_list_count(selected));
   EINA_LIST_FOREACH(selected, l, glit)
     printf("%p ", glit);
   printf("\n");

   realized = elm_genlist_realized_items_get(list);
   printf("realized items (%d): ", eina_list_count(realized));
   // The realized items list should be freed by either eina_list_free() or EINA_LIST_FREE when it is no longer needed
   EINA_LIST_FREE(realized, glit)
     printf("%p  ", glit);
   printf("\n");
   printf("genlist mode: %d\n", elm_genlist_decorate_mode_get(list));
   printf("mode item: %p\n", elm_genlist_decorated_item_get(list));

   evas_object_geometry_get(list, &x, &y, &w, &h);
   mx = w / 2 + x;
   my = h / 2 + y;
   glit = elm_genlist_at_xy_item_get(list, mx, my, NULL);
   printf("item in the middle of the screen: %p\n", glit);
}

static void
_realize_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;
   elm_genlist_realized_items_update(list);
}

EAPI_MAIN int
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
   Evas_Object *win, *box, *hbox;
   Evas_Object *list, *btn;
   unsigned int i;

   win = elm_win_util_standard_add("genlist", "Genlist - simple");
   elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
   elm_win_autodel_set(win, EINA_TRUE);

   box = elm_box_add(win);
   evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_win_resize_object_add(win, box);
   evas_object_show(box);

   list = elm_genlist_add(win);

   if (!_itc)
     {
        _itc = elm_genlist_item_class_new();
        _itc->item_style = "default";
        _itc->func.text_get = _item_label_get;
        _itc->func.content_get = _item_content_get;
        _itc->func.state_get = NULL;
        _itc->func.del = NULL;
     }

   Eina_Bool hbounce, vbounce, always, no_sel;
   Elm_Scroller_Policy hp, vp;
   Elm_Object_Select_Mode sel_mode;

   always = no_sel = EINA_FALSE;
   sel_mode = elm_genlist_select_mode_get(list);
   if (sel_mode == ELM_OBJECT_SELECT_MODE_ALWAYS)
     always = EINA_TRUE;
   else if (sel_mode == ELM_OBJECT_SELECT_MODE_NONE)
     no_sel = EINA_TRUE;

   printf("default values:\n");
   printf("always select: %d\n", always);
   elm_scroller_bounce_get(list, &hbounce, &vbounce);
   printf("bounce - horizontal: %d, vertical: %d\n", hbounce, vbounce);
   printf("homogeneous: %d\n", elm_genlist_homogeneous_get(list));
   printf("horizontal mode: %d\n", elm_genlist_mode_get(list));
   printf("longpress timeout: %0.3f\n",
          elm_genlist_longpress_timeout_get(list));
   printf("multi selection: %d\n", elm_genlist_multi_select_get(list));
   printf("no selection mode: %d\n", no_sel);
   elm_scroller_policy_get(list, &hp, &vp);
   printf("scroller policy - horizontal: %d, vertical: %d\n", hp, vp);
   printf("block count: %d\n", elm_genlist_block_count_get(list));
   printf("\n");

   elm_scroller_bounce_set(list, EINA_FALSE, EINA_FALSE);
   elm_genlist_homogeneous_set(list, EINA_FALSE);
   elm_genlist_mode_set(list, ELM_LIST_LIMIT);
   elm_genlist_multi_select_set(list, EINA_TRUE);
   elm_genlist_select_mode_set(list, ELM_OBJECT_SELECT_MODE_DEFAULT);
   elm_scroller_policy_set(list, ELM_SCROLLER_POLICY_OFF, ELM_SCROLLER_POLICY_ON);
   elm_genlist_longpress_timeout_set(list, 0.5);
   elm_genlist_block_count_set(list, 16);

   for (i = 0; i < N_ITEMS; i++)
     {
        elm_genlist_item_append(list, _itc,
                                (void *)(uintptr_t)i, NULL,
                                ELM_GENLIST_ITEM_NONE,
                                _item_sel_cb, NULL);
     }

   evas_object_size_hint_weight_set(list, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_size_hint_align_set(list, EVAS_HINT_FILL, EVAS_HINT_FILL);
   elm_box_pack_end(box, list);
   evas_object_show(list);

   hbox = elm_box_add(win);
   elm_box_horizontal_set(hbox, EINA_TRUE);
   evas_object_size_hint_weight_set(hbox, EVAS_HINT_EXPAND, 0);
   evas_object_size_hint_align_set(hbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
   elm_box_pack_end(box, hbox);
   evas_object_show(hbox);

   btn = elm_button_add(win);
   elm_object_text_set(btn, "Show status");
   evas_object_size_hint_weight_set(btn, 0, 0);
   evas_object_size_hint_align_set(btn, 0.5, 0.5);
   evas_object_smart_callback_add(btn, "clicked", _show_status_cb, list);
   elm_box_pack_end(hbox, btn);
   evas_object_show(btn);

   btn = elm_button_add(win);
   elm_object_text_set(btn, "Realize");
   evas_object_size_hint_weight_set(btn, 0, 0);
   evas_object_size_hint_align_set(btn, 0.5, 0.5);
   evas_object_smart_callback_add(btn, "clicked", _realize_cb, list);
   elm_box_pack_end(hbox, btn);
   evas_object_show(btn);

   evas_object_resize(win, 200, 320);
   evas_object_show(win);

   elm_run();

   return 0;
}
ELM_MAIN()