src/lib/elm_index.c

   1 /*
   2  * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
   3  */
   4 #include <Elementary.h>
   5 #include "elm_priv.h"
   6 #include "els_box.h"
   7
   8 #define MIN_GRP_SIZE 2 //for symmetry it is 2, otherwise it can be 1 and zero have no meaning.
   9 #define MIN_PIXEL_VALUE 1 //Min pixel value is highly dependent on touch sensitivity support.
  10 #define MIN_OBJ_HEIGHT 24 //should be taken from .edc file.
  11 /*
  12  *  use for find view toplevel
  13  */
  14 #define SET_VIEW_LEVEL(wd, view_level)\
  15    view_level = wd->level;\
  16    while ((!wd->tot_items_count[view_level]) && view_level)\
  17      {\
  18         view_level--; \
  19      }
  20
  21 typedef struct _Widget_Data Widget_Data;
  22
  23 typedef struct _PlacementPart PlacementPart;
  24
  25 struct _Widget_Data
  26 {
  27    Evas_Object *base;
  28    Evas_Object *event[2];
  29    Evas_Object *bx[2]; // 2 - for now all that's supported
  30    Eina_List *items; // 1 list. yes N levels, but only 2 for now and # of items will be small
  31    char *popup_str[2];
  32    int level;
  33    int max_supp_items_count;
  34    int tot_items_count[2];
  35    int min_obj_height, max_grp_size;
  36    int min_1st_level_obj_height;
  37    int items_count;
  38    Evas_Coord dx, dy;
  39    Evas_Coord pwidth, pheight;
  40    Ecore_Timer *delay;
  41    const char *special_char;
  42    Eina_Bool level_active[2];
  43    Eina_Bool horizontal : 1;
  44    Eina_Bool active : 1;
  45    Eina_Bool down : 1;
  46    Eina_Bool hide_button : 1;
  47    double scale_factor;
  48 };
  49
  50 struct _Elm_Index_Item
  51 {
  52    ELM_WIDGET_ITEM;
  53    const char *letter, *vis_letter;
  54    int level, size;
  55    Eina_Bool selected : 1;
  56 };
  57
  58 struct _PlacementPart
  59 {
  60    int start;
  61    int count;
  62 };
  63
  64 static const char *widtype = NULL;
  65
  66 static void _del_hook(Evas_Object *obj);
  67 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  68 static void _theme_hook(Evas_Object *obj);
  69 static void _sizing_eval(Evas_Object *obj);
  70 static void _index_box_auto_fill(Evas_Object *obj, Evas_Object *box, int level);
  71 static void _index_box_clear(Evas_Object *obj, Evas_Object *box, int level);
  72 static void _item_free(Elm_Index_Item *it);
  73 static void _index_process(Evas_Object *obj);
  74
  75 static const char SIG_CHANGED[] = "changed";
  76 static const char SIG_DELAY_CHANGED[] = "delay,changed";
  77 static const char SIG_SELECTED[] = "selected";
  78 static const char SIG_LEVEL_UP[] = "level,up";
  79 static const char SIG_LEVEL_DOWN[] = "level,down";
  80
  81 static const Evas_Smart_Cb_Description _signals[] = {
  82    {SIG_CHANGED, ""},
  83    {SIG_DELAY_CHANGED, ""},
  84    {SIG_SELECTED, ""},
  85    {SIG_LEVEL_UP, ""},
  86    {SIG_LEVEL_DOWN, ""},
  87    {NULL, NULL}
  88 };
  89 /* Free a block allocated by `malloc', `realloc' or `calloc' one by one*/
  90 static void
  91 _del_pre_hook(Evas_Object *obj)
  92 {
  93    Widget_Data *wd = elm_widget_data_get(obj);
  94    if (!wd) return;
  95    _index_box_clear(obj, wd->bx[wd->level], wd->level);
  96    _index_box_clear(obj, wd->bx[0], 0);
  97    while (wd->items) _item_free(wd->items->data);
  98    if (wd->delay) ecore_timer_del(wd->delay);
  99
 100    if(wd->popup_str[0]) free(wd->popup_str[0]);
 101    if(wd->popup_str[1]) free(wd->popup_str[1]);
 102 }
 103
 104 static void
 105 _del_hook(Evas_Object *obj)
 106 {
 107    Widget_Data *wd = elm_widget_data_get(obj);
 108    free(wd);
 109 }
 110
 111 static void
 112 _layout(Evas_Object *o, Evas_Object_Box_Data *priv, void *data)
 113 {
 114    Widget_Data *wd = data;
 115    if (!wd) return;
 116    _els_box_layout(o, priv, wd->horizontal, 0, 0);
 117 }
 118
 119 static void
 120 _signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
 121 {
 122    Widget_Data *wd = elm_widget_data_get(obj);
 123    if (!wd) return;
 124    edje_object_signal_emit(wd->base, emission, source);
 125 }
 126
 127 static void
 128 _signal_callback_add_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 129 {
 130    Widget_Data *wd = elm_widget_data_get(obj);
 131    if (!wd) return;
 132    edje_object_signal_callback_add(wd->base, emission, source, func_cb, data);
 133 }
 134
 135 static void
 136 _signal_callback_del_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 137 {
 138    Widget_Data *wd = elm_widget_data_get(obj);
 139    edje_object_signal_callback_del_full(wd->base, emission, source, func_cb,
 140                                         data);
 141 }
 142
 143 static void
 144 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
 145 {
 146    Widget_Data *wd = elm_widget_data_get(obj);
 147    if (!wd) return;
 148    if (!wd->horizontal)
 149      edje_object_mirrored_set(wd->base, rtl);
 150 }
 151
 152 static void
 153 _theme_hook(Evas_Object *obj)
 154 {
 155    Evas_Coord minw = 0, minh = 0;
 156    Widget_Data *wd = elm_widget_data_get(obj);
 157    if (!wd) return;
 158    _elm_widget_mirrored_reload(obj);
 159
 160    _index_box_clear(obj, wd->bx[0], 0);
 161    _index_box_clear(obj, wd->bx[1], 1);
 162    if (wd->horizontal)
 163      _elm_theme_object_set(obj, wd->base, "index", "base/horizontal", elm_widget_style_get(obj));
 164    else
 165      {
 166         _elm_theme_object_set(obj, wd->base, "index", "base/vertical", elm_widget_style_get(obj));
 167         _mirrored_set(obj, elm_widget_mirrored_get(obj));
 168      }
 169    edje_object_part_swallow(wd->base, "elm.swallow.event.0", wd->event[0]);
 170    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 171    evas_object_size_hint_min_set(wd->event[0], minw, minh);
 172
 173    edje_object_part_swallow(wd->base, "elm.swallow.index.0", wd->bx[0]);
 174    if (edje_object_part_exists(wd->base, "elm.swallow.index.1"))
 175      {
 176         if (!wd->bx[1])
 177           {
 178              wd->bx[1] = evas_object_box_add(evas_object_evas_get(wd->base));
 179              evas_object_box_layout_set(wd->bx[1], _layout, wd, NULL);
 180              elm_widget_sub_object_add(obj, wd->bx[1]);
 181           }
 182         edje_object_part_swallow(wd->base, "elm.swallow.index.1", wd->bx[1]);
 183         evas_object_show(wd->bx[1]);
 184      }
 185    else if (wd->bx[1])
 186      {
 187         evas_object_del(wd->bx[1]);
 188         wd->bx[1] = NULL;
 189      }
 190    if (edje_object_part_exists(wd->base, "elm.swallow.event.1"))
 191      {
 192         if (!wd->event[1])
 193           {
 194              wd->event[1] = evas_object_rectangle_add(evas_object_evas_get(wd->base));
 195              evas_object_color_set(wd->event[1], 0, 0, 0, 0);
 196              elm_widget_sub_object_add(obj, wd->event[1]);
 197           }
 198         edje_object_part_swallow(wd->base, "elm.swallow.event.1", wd->event[1]);
 199         evas_object_size_hint_min_set(wd->event[1], minw, minh);
 200      }
 201    else if (wd->event[1])
 202      {
 203         evas_object_del(wd->event[1]);
 204         wd->event[1] = NULL;
 205      }
 206    edje_object_message_signal_process(wd->base);
 207    edje_object_scale_set(wd->base, elm_widget_scale_get(obj) * _elm_config->scale);
 208    _sizing_eval(obj);
 209    _index_box_auto_fill(obj, wd->bx[0], 0);
 210    if (wd->active)
 211      if (wd->level == 1)
 212        _index_box_auto_fill(obj, wd->bx[1], 1);
 213 }
 214
 215 static void
 216 _sizing_eval(Evas_Object *obj)
 217 {
 218    Widget_Data *wd = elm_widget_data_get(obj);
 219    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 220    if (!wd) return;
 221    edje_object_size_min_calc(wd->base, &minw, &minh);
 222    evas_object_size_hint_min_set(obj, minw, minh);
 223    evas_object_size_hint_max_set(obj, maxw, maxh);
 224 }
 225
 226 static Elm_Index_Item *
 227 _item_new(Evas_Object *obj, const char *letter, const void *item)
 228 {
 229    Widget_Data *wd = elm_widget_data_get(obj);
 230    Elm_Index_Item *it;
 231    if (!wd) return NULL;
 232    it = elm_widget_item_new(obj, Elm_Index_Item);
 233    if (!it) return NULL;
 234    it->base.data = item;
 235    it->level = wd->level;
 236    if(wd->level == 0)
 237      it->size =  wd->min_obj_height;
 238    else
 239      it->size =  wd->min_1st_level_obj_height;
 240    if(letter)
 241      {
 242         it->letter = eina_stringshare_add(letter);
 243         it->vis_letter = eina_stringshare_add(letter);
 244      }
 245    else
 246      {
 247         _item_free(it);
 248         return NULL;
 249      }
 250    return it;
 251 }
 252
 253 static Elm_Index_Item *
 254 _item_find(Evas_Object *obj, const void *item)
 255 {
 256    Widget_Data *wd = elm_widget_data_get(obj);
 257    Eina_List *l;
 258    Elm_Index_Item *it;
 259    if (!wd) return NULL;
 260    EINA_LIST_FOREACH(wd->items, l, it)
 261       if (it->base.data == item) return it;
 262    return NULL;
 263 }
 264
 265 static void
 266 _item_free(Elm_Index_Item *it)
 267 {
 268    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
 269    if (!wd) return;
 270
 271    wd->items = eina_list_remove(wd->items, it);
 272    elm_widget_item_pre_notify_del(it);
 273    eina_stringshare_del(it->letter);
 274    eina_stringshare_del(it->vis_letter);
 275    elm_widget_item_del(it);
 276 }
 277
 278 // FIXME: always have index filled
 279 static void
 280 _index_box_auto_fill(Evas_Object *obj, Evas_Object *box, int level)
 281 {
 282    Widget_Data *wd = elm_widget_data_get(obj);
 283    Eina_Bool rtl;
 284    Eina_List *l;
 285    Elm_Index_Item *it;
 286    Evas_Coord mw, mh, w, h;
 287    int i = 0;
 288    if (!wd) return;
 289    if (wd->level_active[level]) return;
 290    rtl = elm_widget_mirrored_get(obj);
 291    evas_object_geometry_get(box, NULL, NULL, &w, &h);
 292    EINA_LIST_FOREACH(wd->items, l, it)
 293      {
 294         Evas_Object *o;
 295         const char *stacking;
 296
 297         if (it->level != level) continue;
 298         if(i > wd->max_supp_items_count) break;
 299
 300         o = edje_object_add(evas_object_evas_get(obj));
 301         VIEW(it) = o;
 302         edje_object_mirrored_set(VIEW(it), rtl);
 303         if (i & 0x1)
 304           _elm_theme_object_set(obj, o, "index", "item_odd/vertical", elm_widget_style_get(obj));
 305         else
 306           _elm_theme_object_set(obj, o, "index", "item/vertical", elm_widget_style_get(obj));
 307         edje_object_part_text_set(o, "elm.text", it->letter);
 308         edje_object_size_min_restricted_calc(o, &mw, &mh, 0, 0);
 309         evas_object_size_hint_min_set(o, mw, mh);
 310         evas_object_size_hint_weight_set(o, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 311         evas_object_size_hint_align_set(o, EVAS_HINT_FILL, EVAS_HINT_FILL);
 312         edje_object_part_text_set(o, "elm.text", it->vis_letter);
 313         evas_object_size_hint_min_set(o, mw, it->size);
 314         evas_object_size_hint_max_set(o, mw, it->size);
 315         evas_object_resize(o, mw, it->size);
 316
 317         elm_widget_sub_object_add(obj, o);
 318         evas_object_box_append(box, o);
 319         stacking = edje_object_data_get(o, "stacking");
 320         if (stacking)
 321           {
 322              if (!strcmp(stacking, "below")) evas_object_lower(o);
 323              else if (!strcmp(stacking, "above")) evas_object_raise(o);
 324           }
 325         evas_object_show(o);
 326         i++;
 327         if(level == 1)
 328           wd->tot_items_count[1] = i;
 329         evas_object_smart_calculate(box); // force a calc so we know the size
 330         evas_object_size_hint_min_get(box, &mw, &mh);
 331         if (mh > h)
 332           {
 333              _index_box_clear(obj, box, level);
 334              if (i > 0)
 335                {
 336                   // FIXME: only i objects fit! try again. overflows right now
 337                }
 338           }
 339      }
 340    evas_object_smart_calculate(box);
 341    wd->level_active[level] = 1;
 342 }
 343
 344 static void
 345 _index_box_clear(Evas_Object *obj, Evas_Object *box __UNUSED__, int level)
 346 {
 347    Widget_Data *wd = elm_widget_data_get(obj);
 348    Eina_List *l;
 349    Elm_Index_Item *it;
 350    if (!wd) return;
 351    if (!wd->level_active[level]) return;
 352    EINA_LIST_FOREACH(wd->items, l, it)
 353      {
 354         if (!VIEW(it)) continue;
 355         if (it->level != level) continue;
 356         evas_object_del(VIEW(it));
 357         VIEW(it) = NULL;
 358      }
 359    wd->level_active[level] = 0;
 360 }
 361
 362 static Eina_Bool
 363 _delay_change(void *data)
 364 {
 365    Widget_Data *wd = elm_widget_data_get(data);
 366    void *d;
 367    int view_level;
 368    if (!wd) return ECORE_CALLBACK_CANCEL;
 369    wd->delay = NULL;
 370    SET_VIEW_LEVEL(wd, view_level);
 371    d = (void *)elm_index_item_selected_get(data, view_level);
 372    if (d) evas_object_smart_callback_call(data, "delay,changed", d);
 373    return ECORE_CALLBACK_CANCEL;
 374 }
 375
 376 static void
 377 _sel_eval(Evas_Object *obj, Evas_Coord evx, Evas_Coord evy)
 378 {
 379    Widget_Data *wd = elm_widget_data_get(obj);
 380    Elm_Index_Item *it, *it_closest, *it_last;
 381    Eina_List *l;
 382    Evas_Coord x, y, w, h, bx, by, bw, bh, xx, yy;
 383    double cdv = 0.5;
 384    double cdvv = 0.0;
 385    double dmax = 0.0;
 386    double dmin = 0.0;
 387    Evas_Coord dist;
 388    Eina_Bool change = EINA_FALSE;
 389    char *label = NULL, *last = NULL;
 390    int i;
 391    int view_level;
 392    if (!wd) return;
 393
 394    SET_VIEW_LEVEL(wd, view_level);
 395    for (i = 0; i <= view_level; i++)
 396      {
 397         it_last = NULL;
 398         it_closest  = NULL;
 399         dist = 0x7fffffff;
 400         evas_object_geometry_get(wd->bx[i], &bx, &by, &bw, &bh);
 401         dmin = (double)(wd->min_1st_level_obj_height*wd->tot_items_count[1])/(2*(double)bh);
 402         dmax = 1.0-dmin-0.08;
 403         EINA_LIST_FOREACH(wd->items, l, it)
 404           {
 405              if (!((it->level == i) && (VIEW(it)))) continue;
 406              if (it->selected)
 407                {
 408                   it_last = it;
 409                   it->selected = 0;
 410                }
 411              evas_object_geometry_get(VIEW(it), &x, &y, &w, &h);
 412              xx = x + (w / 2);
 413              yy = y + (h / 2);
 414              x = evx - xx;
 415              y = evy - yy;
 416              x = (x * x) + (y * y);
 417              if ((x < dist) || (!it_closest))
 418                {
 419                   if (wd->horizontal)
 420                     cdv = (double)(xx - bx) / (double)bw;
 421                   else
 422                     cdv = (double)(yy - by) / (double)bh;
 423                   it_closest = it;
 424                   dist = x;
 425                }
 426           }
 427           if ((i == 0) && (view_level == 0))
 428             {
 429                if(cdv > dmax || cdv < dmin)
 430                  {
 431                     if(cdv > dmax)
 432                       {
 433                          cdvv = dmax;
 434                       }
 435                     else
 436                       {
 437                          cdvv = dmin;
 438                       }
 439                     edje_object_part_drag_value_set(wd->base, "elm.dragable.index.1", cdv, cdvv);
 440                  }
 441                else
 442                  {
 443                     edje_object_part_drag_value_set(wd->base, "elm.dragable.index.1", cdv, cdv);
 444                  }
 445             }
 446         if (it_closest) it_closest->selected = 1;
 447         if (it_closest != it_last)
 448           {
 449              change = 1;
 450              if (it_last)
 451                {
 452                   const char *stacking, *selectraise;
 453
 454                   it = it_last;
 455                   if(view_level == it->level)
 456                   edje_object_signal_emit(VIEW(it), "elm,state,inactive", "elm");
 457                   stacking = edje_object_data_get(VIEW(it), "stacking");
 458                   selectraise = edje_object_data_get(VIEW(it), "selectraise");
 459                   if ((selectraise) && (!strcmp(selectraise, "on")))
 460                     {
 461                        if ((stacking) && (!strcmp(stacking, "below")))
 462                          evas_object_lower(VIEW(it));
 463                     }
 464                }
 465              if (it_closest)
 466                {
 467                   const char *selectraise;
 468
 469                   it = it_closest;
 470                   if(view_level == it->level)
 471                   edje_object_signal_emit(VIEW(it), "elm,state,active", "elm");
 472                   selectraise = edje_object_data_get(VIEW(it), "selectraise");
 473                   if ((selectraise) && (!strcmp(selectraise, "on")))
 474                     evas_object_raise(VIEW(it));
 475                   evas_object_smart_callback_call((void *)obj, SIG_CHANGED, (void *)it->base.data);
 476                   if (wd->delay) ecore_timer_del(wd->delay);
 477                   wd->delay = ecore_timer_add(0.2, _delay_change, obj);
 478                }
 479           }
 480         if (it_closest)
 481           {
 482              it = it_closest;
 483              if (!last)
 484                last = strdup(it->letter);
 485              else
 486                {
 487                   if (!label) label = strdup(last);
 488                   else
 489                     {
 490                        /* FIXME: realloc return NULL if the request fails */
 491                        label = realloc(label, strlen(label) + strlen(last) + 1);
 492                        strcat(label, last);
 493                     }
 494                   free(last);
 495                   last = strdup(it->letter);
 496                }
 497           }
 498      }
 499    if (!label) label = strdup("");
 500    if (!last) last = strdup("");
 501    if(!wd->hide_button)
 502      {
 503         char *popup_text;
 504
 505         if(view_level == 0)
 506           {
 507              if(wd->tot_items_count[0])
 508                {
 509                   if (wd->popup_str[1]) wd->popup_str[1][0] = '\0';
 510                   wd->popup_str[0] = (char *)realloc(wd->popup_str[0], (sizeof(char) * strlen(last) + 1));
 511
 512                   strcpy(wd->popup_str[0], last);
 513                   edje_object_signal_emit(wd->base, "hide_2nd_level", "");
 514                }
 515              else
 516                {
 517                   edje_object_signal_emit(wd->base, "button.image.hidden", "");
 518                   if(label)free(label);
 519                   if(last) free(last);
 520                   return;
 521                }
 522           }
 523         if (view_level == 1 && wd->level_active[1])
 524           {
 525              if(wd->tot_items_count[1])
 526                {
 527                   wd->popup_str[1] = (char *)realloc(wd->popup_str[1], (sizeof(char) * strlen(last) + 1));
 528
 529                   strcpy(wd->popup_str[1], last);
 530                   edje_object_signal_emit(wd->base, "hide_first_level", "");
 531                }
 532              else
 533                {
 534                   edje_object_signal_emit(wd->base, "button.image.hidden", "");
 535                   if(label)free(label);
 536                   if(last) free(last);
 537                   return;
 538                }
 539           }
 540         popup_text = (char *)malloc(sizeof(char) * (strlen(wd->popup_str[0]) + strlen(wd->popup_str[1]) + 1));
 541         sprintf(popup_text, "%s%s", wd->popup_str[0], wd->popup_str[1]);
 542         edje_object_part_text_set(wd->base, "elm.text", popup_text);
 543
 544         free(popup_text);
 545      }
 546
 547    if(label)
 548      free(label);
 549    if(last)
 550      free(last);
 551 }
 552
 553 static void
 554 _wheel(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 555 {
 556    Widget_Data *wd = elm_widget_data_get(data);
 557    //   Evas_Event_Mouse_Wheel *ev = event_info;
 558    //   Evas_Object *obj = o;
 559    if (!wd) return;
 560 }
 561
 562 static void
 563 _mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 564 {
 565    Widget_Data *wd = elm_widget_data_get(data);
 566    Evas_Event_Mouse_Down *ev = event_info;
 567    Evas_Coord x, y, w;
 568    if (!wd) return;
 569    if (ev->button != 1) return;
 570    wd->down = 1;
 571    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 572    wd->dx = ev->canvas.x - x;
 573    wd->dy = ev->canvas.y - y;
 574    elm_index_active_set(data, 1);
 575    _sel_eval(data, ev->canvas.x, ev->canvas.y);
 576    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer",
 577                                    (!edje_object_mirrored_get(wd->base)) ? wd->dx : (wd->dx - w), wd->dy);
 578 }
 579
 580 static void
 581 _mouse_up(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 582 {
 583    Widget_Data *wd = elm_widget_data_get(data);
 584    Evas_Event_Mouse_Up *ev = event_info;
 585    void *d;
 586    Elm_Index_Item *it;
 587    Eina_List *l;
 588    int view_level;
 589
 590    if (!wd) return;
 591    if (ev->button != 1) return;
 592    if (wd->level == 1 && wd->delay) ecore_timer_del(wd->delay);
 593    wd->delay = NULL;
 594    wd->down = 0;
 595    SET_VIEW_LEVEL(wd, view_level);
 596    d = (void *)elm_index_item_selected_get(data, view_level);
 597    EINA_LIST_FOREACH(wd->items, l, it)
 598      {
 599         edje_object_signal_emit(it->base.view, "elm,state,inactive", "elm");
 600      }
 601    if (d) evas_object_smart_callback_call(data, SIG_SELECTED, d);
 602    elm_index_active_set(data, 0);
 603    edje_object_signal_emit(wd->base, "elm,state,level,0", "elm");
 604 }
 605
 606 static void
 607 _mouse_move(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 608 {
 609    Widget_Data *wd = elm_widget_data_get(data);
 610    Evas_Event_Mouse_Move *ev = event_info;
 611    Evas_Coord minw = 0, minh = 0, x, y, dx, adx, w;
 612    void *d;
 613    char buf[1024];
 614    if (!wd) return;
 615    if (!wd->down) return;
 616    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 617    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 618    x = ev->cur.canvas.x - x;
 619    y = ev->cur.canvas.y - y;
 620    dx = x - wd->dx;
 621    adx = dx;
 622    if (adx < 0) adx = -dx;
 623    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer"
 624                                    , (!edje_object_mirrored_get(wd->base)) ? x : (x - w), y);
 625    if (!wd->horizontal)
 626      {
 627         if (adx > minw)
 628           {
 629              if (!wd->level)
 630                {
 631                   wd->level = 1;
 632                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 633                   edje_object_signal_emit(wd->base, buf, "elm");
 634                   evas_object_smart_callback_call(data, SIG_LEVEL_UP, NULL);
 635                }
 636           }
 637         else
 638           {
 639              if (wd->level == 1)
 640                {
 641                   wd->level = 0;
 642                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 643                   edje_object_signal_emit(wd->base, buf, "elm");
 644                   d = (void *)elm_index_item_selected_get(data, wd->level);
 645                   evas_object_smart_callback_call(data, "changed", d);
 646                   if (wd->delay) ecore_timer_del(wd->delay);
 647                   wd->delay = ecore_timer_add(0.2, _delay_change, data);
 648                   evas_object_smart_callback_call(data, SIG_LEVEL_DOWN, NULL);
 649                }
 650           }
 651      }
 652    _sel_eval(data, ev->cur.canvas.x, ev->cur.canvas.y);
 653 }
 654
 655 static void
 656 _index_box_refill_job(void *data)
 657 {
 658    Widget_Data *wd = elm_widget_data_get((Evas_Object *)data);
 659    if (!wd) return;
 660
 661    const char *string;
 662    Evas_Coord pw, ph;
 663
 664    evas_object_geometry_get(wd->base, NULL, NULL, &pw, &ph);
 665    wd->scale_factor = elm_scale_get();
 666    if ( wd->scale_factor == 0.0 ) {
 667      wd->scale_factor = 1.0;
 668    }
 669    string = edje_object_data_get(wd->base, "min_obj_height");
 670    if(string)
 671      wd->min_obj_height = (int) (atoi(string))*wd->scale_factor;
 672    else
 673      wd->min_obj_height = MIN_OBJ_HEIGHT*wd->scale_factor;
 674    if(!wd->min_obj_height) return;
 675
 676    wd->max_grp_size = wd->min_obj_height - 2*MIN_GRP_SIZE;
 677    wd->items_count = ph/wd->min_obj_height;
 678    wd->max_supp_items_count = wd->max_grp_size*(int)((wd->items_count-1)*0.5)+wd->items_count;
 679
 680    if(pw != wd->pwidth && ph != wd->pheight)
 681      {
 682         if(wd->down == 1)
 683           {
 684              wd->active = 0;
 685              elm_index_active_set(data, 1);
 686           }
 687         _index_box_clear((Evas_Object *)data, wd->bx[0], 0);
 688         evas_object_smart_calculate( wd->bx[0]);
 689         elm_index_item_go((Evas_Object *)data, wd->level);
 690         wd->pwidth = pw;
 691         wd->pheight = ph;
 692      }
 693 }
 694
 695 static void _index_object_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 696 {
 697    Widget_Data *wd;
 698    if(!data) return;
 699    wd = elm_widget_data_get((Evas_Object *)data);
 700    if(!wd) return;
 701    ecore_job_add(_index_box_refill_job, (Evas_Object *)data);
 702 }
 703
 704 EAPI Evas_Object *
 705 elm_index_add(Evas_Object *parent)
 706 {
 707    Evas_Object *obj;
 708    Evas_Object *o;
 709    Evas *e;
 710    Widget_Data *wd;
 711    Evas_Coord minw, minh;
 712    const char *string;
 713
 714    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 715
 716    ELM_SET_WIDTYPE(widtype, "index");
 717    elm_widget_type_set(obj, "index");
 718    elm_widget_sub_object_add(parent, obj);
 719    elm_widget_data_set(obj, wd);
 720    elm_widget_del_hook_set(obj, _del_hook);
 721    elm_widget_del_pre_hook_set(obj, _del_pre_hook);
 722    elm_widget_theme_hook_set(obj, _theme_hook);
 723    elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
 724    elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
 725    elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
 726    elm_widget_can_focus_set(obj, EINA_FALSE);
 727
 728    wd->horizontal = EINA_FALSE;
 729    wd->min_obj_height = 0;
 730    wd->max_grp_size = 0;
 731    wd->items_count = 0;
 732    wd->max_supp_items_count = 0;
 733    wd->tot_items_count[0] = 0;
 734    wd->tot_items_count[1] = 0;
 735    wd->hide_button = 0;
 736    wd->special_char = edje_object_data_get(wd->base, "special_char");
 737    if(wd->special_char == NULL)  wd->special_char = eina_stringshare_add("*");
 738
 739    wd->base = edje_object_add(e);
 740    _elm_theme_object_set(obj, wd->base, "index", "base/vertical", "default");
 741    elm_widget_resize_object_set(obj, wd->base);
 742
 743    o = evas_object_rectangle_add(e);
 744    wd->event[0] = o;
 745    evas_object_color_set(o, 0, 0, 0, 0);
 746    minw = minh = 0;
 747    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 748    evas_object_size_hint_min_set(o, minw, minh);
 749    edje_object_part_swallow(wd->base, "elm.swallow.event.0", o);
 750    elm_widget_sub_object_add(obj, o);
 751    evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE, _index_object_resize, obj);
 752    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_WHEEL, _wheel, obj);
 753    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _mouse_down, obj);
 754    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_UP, _mouse_up, obj);
 755    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_MOVE, _mouse_move, obj);
 756    evas_object_show(o);
 757    if (edje_object_part_exists(wd->base, "elm.swallow.event.1"))
 758      {
 759         o = evas_object_rectangle_add(e);
 760         wd->event[1] = o;
 761         evas_object_color_set(o, 0, 0, 0, 0);
 762         evas_object_size_hint_min_set(o, minw, minh);
 763         edje_object_part_swallow(wd->base, "elm.swallow.event.1", o);
 764         elm_widget_sub_object_add(obj, o);
 765      }
 766
 767    wd->bx[0] = evas_object_box_add(e);
 768    evas_object_box_layout_set(wd->bx[0], _layout, wd, NULL);
 769    elm_widget_sub_object_add(obj, wd->bx[0]);
 770    edje_object_part_swallow(wd->base, "elm.swallow.index.0", wd->bx[0]);
 771    evas_object_show(wd->bx[0]);
 772
 773    if (edje_object_part_exists(wd->base, "elm.swallow.index.1"))
 774      {
 775         wd->bx[1] = evas_object_box_add(e);
 776         evas_object_box_layout_set(wd->bx[1], _layout, wd, NULL);
 777         elm_widget_sub_object_add(obj, wd->bx[1]);
 778         edje_object_part_swallow(wd->base, "elm.swallow.index.1", wd->bx[1]);
 779         evas_object_show(wd->bx[1]);
 780      }
 781
 782    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 783    wd->scale_factor = elm_scale_get();
 784    if ( wd->scale_factor == 0.0 )
 785                 wd->scale_factor = 1.0;
 786    string = edje_object_data_get(wd->base, "min_1st_level_obj_height");
 787    if(string)
 788      wd->min_1st_level_obj_height = (int) (atoi(string))*wd->scale_factor;
 789    else
 790      wd->min_1st_level_obj_height = MIN_OBJ_HEIGHT*wd->scale_factor;
 791    wd->popup_str[0] = calloc(1, sizeof(char) * 1);
 792    wd->popup_str[1] = calloc(1, sizeof(char) * 1);
 793
 794    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 795    _sizing_eval(obj);
 796    return obj;
 797 }
 798
 799 static int
 800 _group_count(Evas_Object *obj, int extraIndex, int adj_pos, int vis_pos)
 801 {
 802    Widget_Data *wd = elm_widget_data_get(obj);
 803    if (!wd) return 0;
 804    int group_count = MIN_GRP_SIZE;
 805    while(group_count <= wd->max_grp_size)
 806      {
 807         if(extraIndex <= wd->max_grp_size*adj_pos)
 808           {
 809              if(group_count*adj_pos>=extraIndex) return group_count;
 810           }
 811         else
 812           return wd->max_grp_size;
 813
 814         group_count += MIN_GRP_SIZE;
 815      }
 816    return group_count;
 817 }
 818
 819 static void
 820 _index_process(Evas_Object *obj)
 821 {
 822    int extraIndex;
 823    int j,i, group_count;
 824    Eina_List *l;
 825    Elm_Index_Item *it;
 826    int count;
 827    int n;
 828
 829    Widget_Data *wd = elm_widget_data_get(obj);
 830    if (!wd) return;
 831
 832    if (wd->items_count == 0) return;
 833
 834    const int adj_pos = (wd->items_count-1)*0.5;
 835    if(wd->tot_items_count[wd->level] <= wd->max_supp_items_count)
 836       n = wd->tot_items_count[wd->level];
 837    else
 838       n = wd->max_supp_items_count;
 839    group_count = MIN_GRP_SIZE;
 840
 841    int *indx = (int*)calloc(n, sizeof(int));
 842    if (!indx) return;
 843
 844    const int minh = wd->min_obj_height;
 845    EINA_LIST_FOREACH(wd->items, l, it)
 846      {
 847         it->vis_letter = eina_stringshare_add(it->letter);
 848         it->size =  minh;
 849      }
 850    int remainder;
 851    int numberofparts;
 852    int N = wd->items_count;
 853
 854    for (i=0;i<n;i++)
 855      {
 856         indx[i] = minh;
 857      }
 858    extraIndex=n-N;
 859    if (extraIndex < 0) return;
 860
 861    group_count = _group_count(obj, extraIndex, adj_pos, N);
 862    if (group_count <= 0)
 863      {
 864         if (indx)
 865           free(indx);
 866         indx = NULL;
 867         return;
 868      }
 869
 870    PlacementPart place[adj_pos];
 871    remainder = extraIndex%group_count;
 872    numberofparts=(extraIndex/group_count)+(remainder == 0? 0: 1);
 873
 874    for (i=0;i<numberofparts; i++)
 875      {
 876         place[i].count=group_count+1;
 877         count = (int)(((float)(i+1)/(float)(numberofparts+1))*N);
 878         place[i].start= count +i*group_count-1;
 879      }
 880    if (remainder)
 881      place[numberofparts-1].count=remainder+1;
 882
 883    for (i=0;i<numberofparts;i++)
 884      {
 885         for (j=0;j<place[i].count; j++)
 886           {
 887              indx[((place[i].start)+j)]= MIN_PIXEL_VALUE;
 888           }
 889         indx[(place[i].start+(place[i].count)/2)] = minh-place[i].count+1;
 890      }
 891    count = 0;
 892    EINA_LIST_FOREACH(wd->items, l, it)
 893      {
 894         int size = indx[count];
 895         count++;
 896         if (size == minh)
 897           {
 898              it->vis_letter = eina_stringshare_add(it->letter);
 899              continue;
 900           }
 901         else if (size == 1)
 902           {
 903              eina_stringshare_del(it->vis_letter);
 904              it->vis_letter = eina_stringshare_add("");
 905           }
 906         else
 907           {
 908              eina_stringshare_del(it->vis_letter);
 909              it->vis_letter = eina_stringshare_add(wd->special_char);
 910           }
 911         it->size = size*wd->scale_factor;
 912      }
 913    if (indx)
 914      {
 915         free(indx);
 916         indx = NULL;
 917      }
 918 }
 919
 920 EAPI void
 921 elm_index_active_set(Evas_Object *obj, Eina_Bool active)
 922 {
 923    ELM_CHECK_WIDTYPE(obj, widtype);
 924    Widget_Data *wd = elm_widget_data_get(obj);
 925    if (!wd) return;
 926    if (wd->active == active) return;
 927    wd->active = active;
 928    wd->level = 0;
 929    if (wd->active)
 930      {
 931         _index_box_clear(obj, wd->bx[1], 1);
 932         _index_process(obj);
 933         _index_box_auto_fill(obj, wd->bx[0], 0);
 934         if(wd->tot_items_count[wd->level])
 935           edje_object_signal_emit(wd->base, "elm,state,active", "elm");
 936         else
 937           edje_object_signal_emit(wd->base, "button.image.hidden", "");
 938      }
 939    else
 940      edje_object_signal_emit(wd->base, "elm,state,inactive", "elm");
 941 }
 942
 943 EAPI Eina_Bool
 944 elm_index_active_get(const Evas_Object *obj)
 945 {
 946    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 947    Widget_Data *wd = elm_widget_data_get(obj);
 948    if (!wd) return EINA_FALSE;
 949    return wd->active;
 950 }
 951
 952 EAPI void
 953 elm_index_item_level_set(Evas_Object *obj, int level)
 954 {
 955    ELM_CHECK_WIDTYPE(obj, widtype);
 956    Widget_Data *wd = elm_widget_data_get(obj);
 957    if (!wd) return;
 958    if (wd->level == level) return;
 959    wd->level = level;
 960 }
 961
 962 EAPI int
 963 elm_index_item_level_get(const Evas_Object *obj)
 964 {
 965    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 966    Widget_Data *wd = elm_widget_data_get(obj);
 967    if (!wd) return 0;
 968    return wd->level;
 969 }
 970
 971 EAPI void *
 972 elm_index_item_selected_get(const Evas_Object *obj, int level)
 973 {
 974    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 975    Widget_Data *wd = elm_widget_data_get(obj);
 976    Eina_List *l;
 977    Elm_Index_Item *it;
 978    if (!wd) return NULL;
 979    EINA_LIST_FOREACH(wd->items, l, it)
 980       if ((it->selected) && (it->level == level))
 981         return elm_widget_item_data_get(it);
 982    return NULL;
 983 }
 984
 985 EAPI void
 986 elm_index_item_append(Evas_Object *obj, const char *letter, const void *item)
 987 {
 988    ELM_CHECK_WIDTYPE(obj, widtype);
 989    Widget_Data *wd = elm_widget_data_get(obj);
 990    Elm_Index_Item *it;
 991    if (!wd) return;
 992    it = _item_new(obj, letter, item);
 993    if (!it) return;
 994    wd->items = eina_list_append(wd->items, it);
 995    wd->tot_items_count[wd->level]++;
 996    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 997 }
 998
 999 EAPI void
1000 elm_index_item_prepend(Evas_Object *obj, const char *letter, const void *item)
1001 {
1002    ELM_CHECK_WIDTYPE(obj, widtype);
1003    Widget_Data *wd = elm_widget_data_get(obj);
1004    Elm_Index_Item *it;
1005
1006    if (!wd) return;
1007    it = _item_new(obj, letter, item);
1008    if (!it) return;
1009    wd->items = eina_list_prepend(wd->items, it);
1010    wd->tot_items_count[wd->level]++;
1011    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1012 }
1013
1014 EAPI void
1015 elm_index_item_append_relative(Evas_Object *obj, const char *letter, const void *item, const void *relative)
1016 {
1017    ELM_CHECK_WIDTYPE(obj, widtype);
1018    Widget_Data *wd = elm_widget_data_get(obj);
1019    Elm_Index_Item *it, *it_rel;
1020    if (!wd) return;
1021    if (!relative)
1022      {
1023         elm_index_item_append(obj, letter, item);
1024         wd->tot_items_count[wd->level]++;
1025         return;
1026      }
1027    it = _item_new(obj, letter, item);
1028    if (!it) return;
1029
1030    it_rel = _item_find(obj, relative);
1031    if (!it_rel)
1032      {
1033         elm_index_item_append(obj, letter, item);
1034         wd->tot_items_count[wd->level]++;
1035         return;
1036      }
1037
1038    wd->items = eina_list_append_relative(wd->items, it, it_rel);
1039    wd->tot_items_count[wd->level]++;
1040    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1041 }
1042
1043 EAPI void
1044 elm_index_item_prepend_relative(Evas_Object *obj, const char *letter, const void *item, const void *relative)
1045 {
1046    ELM_CHECK_WIDTYPE(obj, widtype);
1047    Widget_Data *wd = elm_widget_data_get(obj);
1048    Elm_Index_Item *it, *it_rel;
1049    if (!wd) return;
1050    if (!relative)
1051      {
1052         elm_index_item_prepend(obj, letter, item);
1053         wd->tot_items_count[wd->level]++;
1054         return;
1055      }
1056    it = _item_new(obj, letter, item);
1057    if (!it) return;
1058
1059    it_rel = _item_find(obj, relative);
1060    if (!it_rel)
1061      {
1062         elm_index_item_append(obj, letter, item);
1063         wd->tot_items_count[wd->level]++;
1064         return;
1065      }
1066
1067    wd->items = eina_list_prepend_relative(wd->items, it, it_rel);
1068    wd->tot_items_count[wd->level]++;
1069    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1070 }
1071
1072 EAPI void
1073 elm_index_item_sorted_insert(Evas_Object *obj, const char *letter, const void *item, Eina_Compare_Cb cmp_func, Eina_Compare_Cb cmp_data_func)
1074 {
1075    ELM_CHECK_WIDTYPE(obj, widtype);
1076    Widget_Data *wd = elm_widget_data_get(obj);
1077    Eina_List *lnear;
1078    Elm_Index_Item *it;
1079    int cmp;
1080
1081    if (!wd) return;
1082    if (!(wd->items))
1083      {
1084         elm_index_item_append(obj, letter, item);
1085         return;
1086      }
1087
1088    it = _item_new(obj, letter, item);
1089    if (!it) return;
1090
1091    lnear = eina_list_search_sorted_near_list(wd->items, cmp_func, it, &cmp);
1092    if (cmp < 0)
1093      wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
1094    else if (cmp > 0)
1095      wd->items = eina_list_prepend_relative_list(wd->items, it, lnear);
1096    else
1097      {
1098         /* If cmp_data_func is not provided, append a duplicated item */
1099         if (!cmp_data_func)
1100           wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
1101         else
1102           {
1103              Elm_Index_Item *p_it = eina_list_data_get(lnear);
1104              if (cmp_data_func(p_it->base.data, it->base.data) >= 0)
1105                p_it->base.data = it->base.data;
1106              _item_free(it);
1107           }
1108      }
1109
1110    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1111 }
1112
1113 EAPI void
1114 elm_index_item_del(Evas_Object *obj, const void *item)
1115 {
1116    ELM_CHECK_WIDTYPE(obj, widtype);
1117    Widget_Data *wd = elm_widget_data_get(obj);
1118    Elm_Index_Item *it;
1119    if (!wd) return;
1120    it = _item_find(obj, item);
1121    if (!it) return;
1122    _item_free(it);
1123    wd->tot_items_count[wd->level]--;
1124    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1125 }
1126
1127 EAPI Elm_Index_Item *
1128 elm_index_item_find(Evas_Object *obj, const void *item)
1129 {
1130    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1131    Widget_Data *wd = elm_widget_data_get(obj);
1132    if (!wd) return NULL;
1133    return _item_find(obj, item);
1134 }
1135
1136 EAPI void
1137 elm_index_item_clear(Evas_Object *obj)
1138 {
1139    ELM_CHECK_WIDTYPE(obj, widtype);
1140    Widget_Data *wd = elm_widget_data_get(obj);
1141    Elm_Index_Item *it;
1142    Eina_List *l, *clear = NULL;
1143    if (!wd) return;
1144    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1145    EINA_LIST_FOREACH(wd->items, l, it)
1146      {
1147         if (it->level != wd->level) continue;
1148         clear = eina_list_append(clear, it);
1149      }
1150    EINA_LIST_FREE(clear, it)
1151      {
1152         _item_free(it);
1153         wd->tot_items_count[wd->level]--;
1154      }
1155 }
1156
1157 EAPI void
1158 elm_index_item_go(Evas_Object *obj, int level)
1159 {
1160    ELM_CHECK_WIDTYPE(obj, widtype);
1161    Widget_Data *wd = elm_widget_data_get(obj);
1162    if (!wd) return;
1163    if(level == 0)
1164      _index_process(obj);
1165    _index_box_auto_fill(obj, wd->bx[0], 0);
1166    if (wd->level == 1) _index_box_auto_fill(obj, wd->bx[1], 1);
1167 }
1168
1169 EAPI void *
1170 elm_index_item_data_get(const Elm_Index_Item *it)
1171 {
1172    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it, NULL);
1173    return elm_widget_item_data_get(it);
1174 }
1175
1176 EAPI void
1177 elm_index_item_data_set(Elm_Index_Item *it, const void *data)
1178 {
1179    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it);
1180    elm_widget_item_data_set(it, data);
1181 }
1182
1183 EAPI void
1184 elm_index_button_image_invisible_set(Evas_Object *obj, Eina_Bool invisible)
1185 {
1186    ELM_CHECK_WIDTYPE(obj, widtype);
1187    Widget_Data *wd = elm_widget_data_get(obj);
1188    wd->hide_button = invisible;
1189
1190    edje_object_signal_emit(wd->base, "elm,state,button,image,hide", "elm");
1191    return;
1192 }
1193
1194 EAPI void
1195 elm_index_item_del_cb_set(Elm_Index_Item *it, Evas_Smart_Cb func)
1196 {
1197    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it);
1198    elm_widget_item_del_cb_set(it, func);
1199 }
1200
1201 EAPI const char *
1202 elm_index_item_letter_get(const Elm_Index_Item *it)
1203 {
1204    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it, NULL);
1205    return it->letter;
1206 }
1207