src/examples/flipselector_example.c

   1 /**
   2  * Simple Elementary's <b>flip selector widget</b> example, illustrating its
   3  * usage and API.
   4  *
   5  * See stdout/stderr for output. Compile with:
   6  *
   7  * @verbatim
   8  * gcc -g flipselector_example.c -o flipselector_example `pkg-config --cflags --libs elementary`
   9  * @endverbatim
  10  */
  11
  12 #include <Elementary.h>
  13
  14 static const char *commands = \
  15   "commands are:\n"
  16   "\tn - flip to next item\n"
  17   "\tp - flip to previous item\n"
  18   "\tf - print first item's label\n"
  19   "\tl - print last item's label\n"
  20   "\ts - print selected item's label\n"
  21   "\th - print help\n";
  22
  23 static void
  24 _on_done(void        *data,
  25          Evas_Object *obj,
  26          void        *event_info)
  27 {
  28    elm_exit();
  29 }
  30
  31 void /* unselect the item shown in the flip selector */
  32 _unsel_cb(void        *data,
  33           Evas_Object *obj,
  34           void        *event_info)
  35 {
  36    Elm_Object_Item *it;
  37    Evas_Object *fp = data;
  38
  39    it = elm_flipselector_selected_item_get(fp);
  40    elm_flipselector_item_selected_set(it, EINA_FALSE);
  41 }
  42
  43 void /* delete the item shown in the flip selector */
  44 _del_cb(void        *data,
  45           Evas_Object *obj,
  46           void        *event_info)
  47 {
  48    Elm_Object_Item *it;
  49    Evas_Object *fp = data;
  50
  51    it = elm_flipselector_selected_item_get(fp);
  52    if (it) elm_object_item_del(it);
  53 }
  54
  55 void /* underflow callback */
  56 _underflow_cb(void        *data,
  57               Evas_Object *obj,
  58               void        *event_info)
  59 {
  60    fprintf(stdout, "Underflow!\n");
  61 }
  62
  63 void /* overflow callback */
  64 _overflow_cb(void        *data,
  65              Evas_Object *obj,
  66              void        *event_info)
  67 {
  68    fprintf(stdout, "Overflow!\n");
  69 }
  70
  71 static void
  72 _on_keydown(void              *data,
  73             Evas_Object       *object,
  74             Evas_Object       *src,
  75             Evas_Callback_Type type,
  76             void              *event_info)
  77 {
  78    Evas_Object *fs = data;
  79    Evas_Event_Key_Down *ev = event_info;
  80
  81    if (type != EVAS_CALLBACK_KEY_DOWN) return;
  82
  83    if (strcmp(ev->keyname, "h") == 0) /* print help */
  84      {
  85         fprintf(stdout, "%s", commands);
  86         return;
  87      }
  88
  89    if (strcmp(ev->keyname, "n") == 0) /* flip to next item */
  90      {
  91          elm_flipselector_flip_next(fs);
  92
  93         fprintf(stdout, "Flipping to next item\n");
  94
  95         return;
  96      }
  97
  98    if (strcmp(ev->keyname, "p") == 0) /* flip to previous item */
  99      {
 100          elm_flipselector_flip_prev(fs);
 101
 102         fprintf(stdout, "Flipping to previous item\n");
 103
 104         return;
 105      }
 106
 107    if (strcmp(ev->keyname, "f") == 0) /* print first item's label */
 108      {
 109          Elm_Object_Item *it;
 110
 111          it = elm_flipselector_first_item_get(fs);
 112
 113          fprintf(stdout, "Flip selector's first item is: %s\n", it ?
 114                  elm_object_item_text_get(it) : "none");
 115
 116         return;
 117      }
 118
 119    if (strcmp(ev->keyname, "l") == 0) /* print last item's label */
 120      {
 121          Elm_Object_Item *it;
 122
 123          it = elm_flipselector_last_item_get(fs);
 124
 125          fprintf(stdout, "Flip selector's last item is: %s\n", it ?
 126                  elm_object_item_text_get(it) : "none");
 127
 128         return;
 129      }
 130
 131    if (strcmp(ev->keyname, "s") == 0) /* print selected item's label */
 132      {
 133          Elm_Object_Item *it;
 134
 135          it = elm_flipselector_selected_item_get(fs);
 136
 137          fprintf(stdout, "Flip selector's selected item is: %s\n", it ?
 138                  elm_object_item_text_get(it) : "none");
 139
 140         return;
 141      }
 142 }
 143
 144 EAPI_MAIN int
 145 elm_main(int argc, char **argv)
 146 {
 147    unsigned int i;
 148    Evas_Object *win, *bg, *bx, *fp, *bt;
 149    static const char *lbl[] =
 150    {
 151       "Elementary",
 152       "Evas",
 153       "Eina",
 154       "Edje",
 155       "Eet",
 156       "Ecore",
 157       "Efreet",
 158       "Edbus"
 159    };
 160
 161    win = elm_win_add(NULL, "flipselector", ELM_WIN_BASIC);
 162    elm_win_title_set(win, "Flip Selector Example");
 163    evas_object_smart_callback_add(win, "delete,request", _on_done, NULL);
 164
 165    bg = elm_bg_add(win);
 166    elm_win_resize_object_add(win, bg);
 167    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 168    evas_object_show(bg);
 169
 170    bx = elm_box_add(win);
 171    evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 172    elm_win_resize_object_add(win, bx);
 173    evas_object_show(bx);
 174
 175    fp = elm_flipselector_add(win);
 176    evas_object_size_hint_weight_set(fp, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 177    evas_object_smart_callback_add(fp, "underflowed", _overflow_cb, NULL);
 178    evas_object_smart_callback_add(fp, "overflowed", _underflow_cb, NULL);
 179    for (i = 0; i < sizeof(lbl) / sizeof(lbl[0]); i++)
 180      elm_flipselector_item_append(fp, lbl[i], NULL, NULL);
 181    elm_box_pack_end(bx, fp);
 182    evas_object_show(fp);
 183
 184    bt = elm_button_add(win);
 185    elm_object_text_set(bt, "Unselect item");
 186    evas_object_smart_callback_add(bt, "clicked", _unsel_cb, fp);
 187    elm_box_pack_end(bx, bt);
 188    evas_object_show(bt);
 189
 190    bt = elm_button_add(win);
 191    elm_object_text_set(bt, "Delete item");
 192    evas_object_smart_callback_add(bt, "clicked", _del_cb, fp);
 193    elm_box_pack_end(bx, bt);
 194    evas_object_show(bt);
 195
 196    elm_object_event_callback_add(win, (Elm_Event_Cb)_on_keydown, fp);
 197
 198    evas_object_show(win);
 199
 200    fprintf(stdout, "%s", commands);
 201    elm_run();
 202    elm_shutdown();
 203
 204    return 0;
 205 }
 206 ELM_MAIN()