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 `pkg-config --cflags --libs elementary` index_example.c -o index_example
   9  * @endverbatim
  10  */
  11
  12 #include <Elementary.h>
  13 #ifdef HAVE_CONFIG_H
  14 # include "elementary_config.h"
  15 #else
  16 # define __UNUSED__
  17 #endif
  18
  19 struct example_data
  20 {
  21    Evas_Object *list, *index;
  22 };
  23
  24 struct example_data d = {NULL, NULL};
  25
  26 static const char *dict[] = \
  27 {
  28 #include "dict.txt"
  29 };
  30
  31 static void
  32 _index_item_del(void        *data,
  33                 Evas_Object *obj __UNUSED__,
  34                 void        *event_info)
  35 {
  36    fprintf(stdout, "Deleting associated list node (%s). Comparing index "
  37                    "item data reported via callback with the one returned by "
  38                    "index's API on items: %s.\n",
  39            elm_object_item_text_get(data),
  40            data == elm_index_item_data_get(event_info) ? "OK" :
  41            "FAIL, something went wrong");
  42
  43    elm_object_item_del(data);
  44 }
  45
  46 /* delete an index item */
  47 static void
  48 _item_del(void        *data __UNUSED__,
  49           Evas_Object *obj __UNUSED__,
  50           void        *event_info __UNUSED__)
  51 {
  52    Elm_Object_Item *iit;
  53    Elm_Object_Item *lit = elm_index_item_selected_get(d.index, 0);
  54
  55    iit = elm_index_item_find(d.index, lit);
  56
  57    if (!iit) return;
  58
  59    fprintf(stdout, "Deleting last selected index item, which had letter"
  60            " %s (pointing to %s)\n", elm_index_item_letter_get(iit),
  61            elm_object_item_text_get(lit));
  62
  63    elm_object_item_del(lit);
  64 }
  65
  66 static void
  67 _item_del_all(void        *data __UNUSED__,
  68               Evas_Object *obj __UNUSED__,
  69               void        *event_info __UNUSED__)
  70 {
  71    elm_index_item_clear(d.index);
  72 }
  73
  74 static void
  75 _active_set(void        *data __UNUSED__,
  76             Evas_Object *obj __UNUSED__,
  77             void        *event_info __UNUSED__)
  78 {
  79    elm_index_active_set(d.index, !elm_index_active_get(d.index));
  80
  81    fprintf(stdout, "Toggling index programmatically.\n");
  82 }
  83
  84 /* "delay,changed" hook */
  85 static void
  86 _index_changed(void        *data __UNUSED__,
  87                Evas_Object *obj __UNUSED__,
  88                void        *event_info)
  89 {
  90    elm_list_item_bring_in(event_info);
  91 }
  92
  93 static void
  94 _index_selected(void        *data __UNUSED__,
  95                 Evas_Object *obj,
  96                 void        *event_info)
  97 {
  98    Elm_Object_Item *lit = event_info;
  99
 100    fprintf(stdout, "New index item selected. Comparing item reported"
 101                    " via callback with the selection returned by the API: "
 102                    "%s.\n", lit == elm_index_item_selected_get(obj, 0) ? "OK" :
 103            "FAIL, something went wrong");
 104 }
 105
 106 static void
 107 _on_done(void        *data __UNUSED__,
 108          Evas_Object *obj __UNUSED__,
 109          void        *event_info __UNUSED__)
 110 {
 111    elm_exit();
 112 }
 113
 114 int
 115 elm_main(int    argc __UNUSED__,
 116          char **argv __UNUSED__)
 117 {
 118    Evas_Object *win, *bg, *hbox, *vbox, *bt, *sep;
 119    Elm_Object_Item *lit;
 120    unsigned int i;
 121    char curr = 0;
 122
 123    win = elm_win_add(NULL, "index", ELM_WIN_BASIC);
 124    elm_win_title_set(win, "Index Example");
 125    evas_object_smart_callback_add(win, "delete,request", _on_done, NULL);
 126
 127    bg = elm_bg_add(win);
 128    elm_win_resize_object_add(win, bg);
 129    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 130    evas_object_show(bg);
 131
 132    vbox = elm_box_add(win);
 133    elm_win_resize_object_add(win, vbox);
 134    evas_object_size_hint_weight_set(vbox, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 135    evas_object_show(vbox);
 136
 137    d.list = elm_list_add(win);
 138    evas_object_size_hint_weight_set(d.list, EVAS_HINT_EXPAND,
 139                                     EVAS_HINT_EXPAND);
 140    evas_object_size_hint_align_set(d.list, EVAS_HINT_FILL, EVAS_HINT_FILL);
 141    evas_object_show(d.list);
 142    elm_box_pack_end(vbox, d.list);
 143
 144    d.index = elm_index_add(win);
 145    elm_win_resize_object_add(win, d.index);
 146    evas_object_size_hint_weight_set(d.index, EVAS_HINT_EXPAND,
 147                                     EVAS_HINT_EXPAND);
 148    evas_object_size_hint_align_set(d.list, EVAS_HINT_FILL, EVAS_HINT_FILL);
 149    evas_object_show(d.index);
 150
 151    for (i = 0; i < (sizeof(dict) / sizeof(dict[0])); i++)
 152      {
 153         lit = elm_list_item_append(d.list, dict[i], NULL, NULL, NULL, NULL);
 154
 155         if (curr != dict[i][0])
 156           {
 157              Elm_Object_Item *index_it;
 158              char buf[32];
 159
 160              curr = dict[i][0];
 161              /* indexing by first letters */
 162
 163              snprintf(buf, sizeof(buf), "%c", curr);
 164              elm_index_item_append(d.index, buf, NULL, lit);
 165              index_it = elm_index_item_find(d.index, lit);
 166
 167              elm_object_item_del_cb_set(index_it, _index_item_del);
 168           }
 169      }
 170
 171    evas_object_smart_callback_add(d.index, "delay,changed", _index_changed,
 172                                   NULL);
 173    evas_object_smart_callback_add(d.index, "selected", _index_selected, NULL);
 174
 175    /* attribute setting knobs */
 176    sep = elm_separator_add(win);
 177    elm_separator_horizontal_set(sep, EINA_TRUE);
 178    elm_box_pack_end(vbox, sep);
 179    evas_object_show(sep);
 180
 181    hbox = elm_box_add(win);
 182    elm_box_horizontal_set(hbox, EINA_TRUE);
 183    evas_object_size_hint_weight_set(hbox, EVAS_HINT_EXPAND, 0);
 184    evas_object_size_hint_fill_set(hbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
 185    elm_box_pack_end(vbox, hbox);
 186    evas_object_show(hbox);
 187
 188    bt = elm_button_add(win);
 189    elm_object_text_set(bt, "bring in index");
 190    evas_object_smart_callback_add(bt, "clicked", _active_set, NULL);
 191    elm_box_pack_end(hbox, bt);
 192    evas_object_show(bt);
 193
 194    bt = elm_button_add(win);
 195    elm_object_text_set(bt, "delete last selected item");
 196    evas_object_smart_callback_add(bt, "clicked", _item_del, NULL);
 197    elm_box_pack_end(hbox, bt);
 198    evas_object_show(bt);
 199
 200    bt = elm_button_add(win);
 201    elm_object_text_set(bt, "delete all items");
 202    evas_object_smart_callback_add(bt, "clicked", _item_del_all, NULL);
 203    elm_box_pack_end(hbox, bt);
 204    evas_object_show(bt);
 205
 206    evas_object_resize(win, 320, 600);
 207    evas_object_show(win);
 208
 209    elm_run();
 210    return 0;
 211 }
 212
 213 ELM_MAIN()