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