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 `pkg-config --cflags --libs elementary` flipselector_example.c -o flipselector_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 static const char *commands = \
  20   "commands are:\n"
  21   "\tn - flip to next item\n"
  22   "\tp - flip to previous item\n"
  23   "\tf - print first item's label\n"
  24   "\tl - print last item's label\n"
  25   "\ts - print selected item's label\n"
  26   "\th - print help\n";
  27
  28 static void
  29 _on_done(void        *data __UNUSED__,
  30          Evas_Object *obj __UNUSED__,
  31          void        *event_info __UNUSED__)
  32 {
  33    elm_exit();
  34 }
  35
  36 void /* unselect the item shown in the flip selector */
  37 _unsel_cb(void        *data,
  38           Evas_Object *obj __UNUSED__,
  39           void        *event_info __UNUSED__)
  40 {
  41    Elm_Object_Item *it;
  42    Evas_Object *fp = data;
  43
  44    it = elm_flipselector_selected_item_get(fp);
  45    elm_flipselector_item_selected_set(it, EINA_FALSE);
  46 }
  47
  48 void /* delete the item shown in the flip selector */
  49 _del_cb(void        *data,
  50           Evas_Object *obj __UNUSED__,
  51           void        *event_info __UNUSED__)
  52 {
  53    Elm_Object_Item *it;
  54    Evas_Object *fp = data;
  55
  56    it = elm_flipselector_selected_item_get(fp);
  57    if (it) elm_object_item_del(it);
  58 }
  59
  60 void /* underflow callback */
  61 _underflow_cb(void        *data __UNUSED__,
  62               Evas_Object *obj __UNUSED__,
  63               void        *event_info __UNUSED__)
  64 {
  65    fprintf(stdout, "Underflow!\n");
  66 }
  67
  68 void /* overflow callback */
  69 _overflow_cb(void        *data __UNUSED__,
  70              Evas_Object *obj __UNUSED__,
  71              void        *event_info __UNUSED__)
  72 {
  73    fprintf(stdout, "Overflow!\n");
  74 }
  75
  76 static void
  77 _on_keydown(void              *data,
  78             Evas_Object       *object __UNUSED__,
  79             Evas_Object       *src __UNUSED__,
  80             Evas_Callback_Type type,
  81             void              *event_info)
  82 {
  83    Evas_Object *fs = data;
  84    Evas_Event_Key_Down *ev = event_info;
  85
  86    if (type != EVAS_CALLBACK_KEY_DOWN) return;
  87
  88    if (strcmp(ev->keyname, "h") == 0) /* print help */
  89      {
  90         fprintf(stdout, commands);
  91         return;
  92      }
  93
  94    if (strcmp(ev->keyname, "n") == 0) /* flip to next item */
  95      {
  96          elm_flipselector_flip_next(fs);
  97
  98         fprintf(stdout, "Flipping to next item\n");
  99
 100         return;
 101      }
 102
 103    if (strcmp(ev->keyname, "p") == 0) /* flip to previous item */
 104      {
 105          elm_flipselector_flip_prev(fs);
 106
 107         fprintf(stdout, "Flipping to previous item\n");
 108
 109         return;
 110      }
 111
 112    if (strcmp(ev->keyname, "f") == 0) /* print first item's label */
 113      {
 114          Elm_Object_Item *it;
 115
 116          it = elm_flipselector_first_item_get(fs);
 117
 118          fprintf(stdout, "Flip selector's first item is: %s\n", it ?
 119                  elm_object_item_text_get(it) : "none");
 120
 121         return;
 122      }
 123
 124    if (strcmp(ev->keyname, "l") == 0) /* print last item's label */
 125      {
 126          Elm_Object_Item *it;
 127
 128          it = elm_flipselector_last_item_get(fs);
 129
 130          fprintf(stdout, "Flip selector's last item is: %s\n", it ?
 131                  elm_object_item_text_get(it) : "none");
 132
 133         return;
 134      }
 135
 136    if (strcmp(ev->keyname, "s") == 0) /* print selected item's label */
 137      {
 138          Elm_Object_Item *it;
 139
 140          it = elm_flipselector_selected_item_get(fs);
 141
 142          fprintf(stdout, "Flip selector's selected item is: %s\n", it ?
 143                  elm_object_item_text_get(it) : "none");
 144
 145         return;
 146      }
 147 }
 148
 149 EAPI_MAIN int
 150 elm_main(int argc __UNUSED__, char **argv __UNUSED__)
 151 {
 152    unsigned int i;
 153    Evas_Object *win, *bg, *bx, *fp, *bt;
 154    static const char *lbl[] =
 155    {
 156       "Elementary",
 157       "Evas",
 158       "Eina",
 159       "Edje",
 160       "Eet",
 161       "Ecore",
 162       "Efreet",
 163       "Edbus"
 164    };
 165
 166    win = elm_win_add(NULL, "flipselector", ELM_WIN_BASIC);
 167    elm_win_title_set(win, "Flip Selector Example");
 168    evas_object_smart_callback_add(win, "delete,request", _on_done, NULL);
 169
 170    bg = elm_bg_add(win);
 171    elm_win_resize_object_add(win, bg);
 172    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 173    evas_object_show(bg);
 174
 175    bx = elm_box_add(win);
 176    evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 177    elm_win_resize_object_add(win, bx);
 178    evas_object_show(bx);
 179
 180    fp = elm_flipselector_add(win);
 181    evas_object_size_hint_weight_set(fp, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 182    evas_object_smart_callback_add(fp, "underflowed", _overflow_cb, NULL);
 183    evas_object_smart_callback_add(fp, "overflowed", _underflow_cb, NULL);
 184    for (i = 0; i < sizeof(lbl) / sizeof(lbl[0]); i++)
 185      elm_flipselector_item_append(fp, lbl[i], NULL, NULL);
 186    elm_box_pack_end(bx, fp);
 187    evas_object_show(fp);
 188
 189    bt = elm_button_add(win);
 190    elm_object_text_set(bt, "Unselect item");
 191    evas_object_smart_callback_add(bt, "clicked", _unsel_cb, fp);
 192    elm_box_pack_end(bx, bt);
 193    evas_object_show(bt);
 194
 195    bt = elm_button_add(win);
 196    elm_object_text_set(bt, "Delete item");
 197    evas_object_smart_callback_add(bt, "clicked", _del_cb, fp);
 198    elm_box_pack_end(bx, bt);
 199    evas_object_show(bt);
 200
 201    elm_object_event_callback_add(win, (Elm_Event_Cb)_on_keydown, fp);
 202
 203    evas_object_show(win);
 204
 205    fprintf(stdout, commands);
 206    elm_run();
 207    return 0;
 208 }
 209 ELM_MAIN()