src/examples/index_example_01.c

   1 /**
   2  * Simple Elementary's <b>index widget</b> example, illustrating its
   3  * usage and API.
   4  *
   5  * See stdout/stderr for output. Compile with:
   6  *
   7  * @verbatim
   8  * gcc -g index_example.c -o index_example `pkg-config --cflags --libs elementary`
   9  * @endverbatim
  10  */
  11
  12 #include <Elementary.h>
  13
  14 struct example_data
  15 {
  16    Evas_Object *list, *index;
  17 };
  18
  19 struct example_data d = {NULL, NULL};
  20
  21 static const char *dict[] = \
  22 {
  23 #include "dict.txt"
  24 };
  25
  26 static void
  27 _index_item_del(void        *data,
  28                 Evas_Object *obj,
  29                 void        *event_info)
  30 {
  31    fprintf(stdout, "Deleting associated list node (%s). Comparing index "
  32                    "item data reported via callback with the one returned by "
  33                    "index's API on items: %s.\n",
  34            elm_object_item_text_get(data),
  35            data == elm_object_item_data_get(event_info) ? "OK" :
  36            "FAIL, something went wrong");
  37
  38    elm_object_item_del(data);
  39 }
  40
  41 /* delete an index item */
  42 static void
  43 _item_del(void        *data,
  44           Evas_Object *obj,
  45           void        *event_info)
  46 {
  47    Elm_Object_Item *iit;
  48    Elm_Object_Item *lit = elm_index_selected_item_get(d.index, 0);
  49
  50    iit = elm_index_item_find(d.index, lit);
  51
  52    if (!iit) return;
  53
  54    fprintf(stdout, "Deleting last selected index item, which had letter"
  55            " %s (pointing to %s)\n", elm_index_item_letter_get(iit),
  56            elm_object_item_text_get(lit));
  57
  58    elm_object_item_del(lit);
  59 }
  60
  61 static void
  62 _item_del_all(void        *data,
  63               Evas_Object *obj,
  64               void        *event_info)
  65 {
  66    elm_index_item_clear(d.index);
  67 }
  68
  69 static void
  70 _active_set(void        *data,
  71             Evas_Object *obj,
  72             void        *event_info)
  73 {
  74    elm_index_autohide_disabled_set(d.index, !elm_index_autohide_disabled_get(d.index));
  75
  76    fprintf(stdout, "Toggling index programmatically.\n");
  77 }
  78
  79 /* "delay,changed" hook */
  80 static void
  81 _index_changed(void        *data,
  82                Evas_Object *obj,
  83                void        *event_info)
  84 {
  85    elm_list_item_bring_in(event_info);
  86 }
  87
  88 static void
  89 _index_selected(void        *data,
  90                 Evas_Object *obj,
  91                 void        *event_info)
  92 {
  93    Elm_Object_Item *lit = event_info;
  94
  95    fprintf(stdout, "New index item selected. Comparing item reported"
  96                    " via callback with the selection returned by the API: "
  97                    "%s.\n", lit == elm_index_selected_item_get(obj, 0) ? "OK" :
  98            "FAIL, something went wrong");
  99 }
 100
 101 static void
 102 _on_done(void        *data,
 103          Evas_Object *obj,
 104          void        *event_info)
 105 {
 106    elm_exit();
 107 }
 108
 109 EAPI_MAIN int
 110 elm_main(int    argc,
 111          char **argv)
 112 {
 113    Evas_Object *win, *bg, *hbox, *vbox, *bt, *sep;
 114    Elm_Object_Item *lit;
 115    unsigned int i;
 116    char curr = 0;
 117
 118    win = elm_win_add(NULL, "index", ELM_WIN_BASIC);
 119    elm_win_title_set(win, "Index Example");
 120    evas_object_smart_callback_add(win, "delete,request", _on_done, NULL);
 121
 122    bg = elm_bg_add(win);
 123    elm_win_resize_object_add(win, bg);
 124    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 125    evas_object_show(bg);
 126
 127    vbox = elm_box_add(win);
 128    elm_win_resize_object_add(win, vbox);
 129    evas_object_size_hint_weight_set(vbox, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 130    evas_object_show(vbox);
 131
 132    d.list = elm_list_add(win);
 133    evas_object_size_hint_weight_set(d.list, EVAS_HINT_EXPAND,
 134                                     EVAS_HINT_EXPAND);
 135    evas_object_size_hint_align_set(d.list, EVAS_HINT_FILL, EVAS_HINT_FILL);
 136    evas_object_show(d.list);
 137    elm_box_pack_end(vbox, d.list);
 138
 139    d.index = elm_index_add(win);
 140    elm_win_resize_object_add(win, d.index);
 141    evas_object_size_hint_weight_set(d.index, EVAS_HINT_EXPAND,
 142                                     EVAS_HINT_EXPAND);
 143    evas_object_size_hint_align_set(d.list, EVAS_HINT_FILL, EVAS_HINT_FILL);
 144    evas_object_show(d.index);
 145
 146    for (i = 0; i < (sizeof(dict) / sizeof(dict[0])); i++)
 147      {
 148         lit = elm_list_item_append(d.list, dict[i], NULL, NULL, NULL, NULL);
 149
 150         if (curr != dict[i][0])
 151           {
 152              Elm_Object_Item *index_it;
 153              char buf[32];
 154
 155              curr = dict[i][0];
 156              /* indexing by first letters */
 157
 158              snprintf(buf, sizeof(buf), "%c", curr);
 159              elm_index_item_append(d.index, buf, NULL, lit);
 160              index_it = elm_index_item_find(d.index, lit);
 161
 162              elm_object_item_del_cb_set(index_it, _index_item_del);
 163           }
 164      }
 165
 166    evas_object_smart_callback_add(d.index, "delay,changed", _index_changed,
 167                                   NULL);
 168    evas_object_smart_callback_add(d.index, "selected", _index_selected, NULL);
 169
 170    /* attribute setting knobs */
 171    sep = elm_separator_add(win);
 172    elm_separator_horizontal_set(sep, EINA_TRUE);
 173    elm_box_pack_end(vbox, sep);
 174    evas_object_show(sep);
 175
 176    hbox = elm_box_add(win);
 177    elm_box_horizontal_set(hbox, EINA_TRUE);
 178    evas_object_size_hint_weight_set(hbox, EVAS_HINT_EXPAND, 0);
 179    evas_object_size_hint_fill_set(hbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
 180    elm_box_pack_end(vbox, hbox);
 181    evas_object_show(hbox);
 182
 183    bt = elm_button_add(win);
 184    elm_object_text_set(bt, "bring in index");
 185    evas_object_smart_callback_add(bt, "clicked", _active_set, NULL);
 186    elm_box_pack_end(hbox, bt);
 187    evas_object_show(bt);
 188
 189    bt = elm_button_add(win);
 190    elm_object_text_set(bt, "delete last selected item");
 191    evas_object_smart_callback_add(bt, "clicked", _item_del, NULL);
 192    elm_box_pack_end(hbox, bt);
 193    evas_object_show(bt);
 194
 195    bt = elm_button_add(win);
 196    elm_object_text_set(bt, "delete all items");
 197    evas_object_smart_callback_add(bt, "clicked", _item_del_all, NULL);
 198    elm_box_pack_end(hbox, bt);
 199    evas_object_show(bt);
 200
 201    evas_object_resize(win, 320, 600);
 202    evas_object_show(win);
 203
 204    elm_run();
 205    elm_shutdown();
 206
 207    return 0;
 208 }
 209 ELM_MAIN()