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 /* Automatically filling the box with index item*/
 269    Widget_Data *wd = elm_widget_data_get(it->base.widget);
 270    if (!wd) return;
 271
 272    wd->items = eina_list_remove(wd->items, it);
 273    elm_widget_item_pre_notify_del(it);
 274    eina_stringshare_del(it->letter);
 275    eina_stringshare_del(it->vis_letter);
 276    elm_widget_item_del(it);
 277 }
 278
 279 // FIXME: always have index filled
 280 static void
 281 _index_box_auto_fill(Evas_Object *obj, Evas_Object *box, int level)
 282 {
 283    Widget_Data *wd = elm_widget_data_get(obj);
 284    Eina_Bool rtl;
 285    Eina_List *l;
 286    Elm_Index_Item *it;
 287    Evas_Coord mw, mh, w, h;
 288    int i = 0;
 289    if (!wd) return;
 290    if (wd->level_active[level]) return;
 291    rtl = elm_widget_mirrored_get(obj);
 292    evas_object_geometry_get(box, NULL, NULL, &w, &h);
 293    EINA_LIST_FOREACH(wd->items, l, it)
 294      {
 295         Evas_Object *o;
 296         const char *stacking;
 297
 298         if (it->level != level) continue;
 299         if(i > wd->max_supp_items_count) break;
 300
 301         o = edje_object_add(evas_object_evas_get(obj));
 302         it->base.view = o;
 303         edje_object_mirrored_set(it->base.view, rtl);
 304         if (i & 0x1)
 305           _elm_theme_object_set(obj, o, "index", "item_odd/vertical", elm_widget_style_get(obj));
 306         else
 307           _elm_theme_object_set(obj, o, "index", "item/vertical", elm_widget_style_get(obj));
 308         edje_object_part_text_set(o, "elm.text", it->letter);
 309         edje_object_size_min_restricted_calc(o, &mw, &mh, 0, 0);
 310         evas_object_size_hint_min_set(o, mw, mh);
 311         evas_object_size_hint_weight_set(o, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 312         evas_object_size_hint_align_set(o, EVAS_HINT_FILL, EVAS_HINT_FILL);
 313         edje_object_part_text_set(o, "elm.text", it->vis_letter);
 314         evas_object_size_hint_min_set(o, mw, it->size);
 315         evas_object_size_hint_max_set(o, mw, it->size);
 316         evas_object_resize(o, mw, it->size);
 317
 318         elm_widget_sub_object_add(obj, o);
 319         evas_object_box_append(box, o);
 320         stacking = edje_object_data_get(o, "stacking");
 321         if (stacking)
 322           {
 323              if (!strcmp(stacking, "below")) evas_object_lower(o);
 324              else if (!strcmp(stacking, "above")) evas_object_raise(o);
 325           }
 326         evas_object_show(o);
 327         i++;
 328         if(level == 1)
 329           wd->tot_items_count[1] = i;
 330         evas_object_smart_calculate(box); // force a calc so we know the size
 331         evas_object_size_hint_min_get(box, &mw, &mh);
 332         if (mh > h)
 333           {
 334              _index_box_clear(obj, box, level);
 335              if (i > 0)
 336                {
 337                   // FIXME: only i objects fit! try again. overflows right now
 338                }
 339           }
 340      }
 341    evas_object_smart_calculate(box);
 342    wd->level_active[level] = 1;
 343 }
 344
 345 static void
 346 _index_box_clear(Evas_Object *obj, Evas_Object *box __UNUSED__, int level)
 347 {
 348    Widget_Data *wd = elm_widget_data_get(obj);
 349    Eina_List *l;
 350    Elm_Index_Item *it;
 351    if (!wd) return;
 352    if (!wd->level_active[level]) return;
 353    EINA_LIST_FOREACH(wd->items, l, it)
 354      {
 355         if (!it->base.view) continue;
 356         if (it->level != level) continue;
 357         evas_object_del(it->base.view);
 358         it->base.view = NULL;
 359      }
 360    wd->level_active[level] = 0;
 361 }
 362
 363 static Eina_Bool
 364 _delay_change(void *data)
 365 {
 366    Widget_Data *wd = elm_widget_data_get(data);
 367    void *d;
 368    int view_level;
 369    if (!wd) return ECORE_CALLBACK_CANCEL;
 370    wd->delay = NULL;
 371    SET_VIEW_LEVEL(wd, view_level);
 372    d = (void *)elm_index_item_selected_get(data, view_level);
 373    if (d) evas_object_smart_callback_call(data, "delay,changed", d);
 374    return ECORE_CALLBACK_CANCEL;
 375 }
 376
 377 static void
 378 _sel_eval(Evas_Object *obj, Evas_Coord evx, Evas_Coord evy)
 379 {
 380    Widget_Data *wd = elm_widget_data_get(obj);
 381    Elm_Index_Item *it, *it_closest, *it_last;
 382    Eina_List *l;
 383    Evas_Coord x, y, w, h, bx, by, bw, bh, xx, yy;
 384    double cdv = 0.5;
 385    double cdvv = 0.0;
 386    double dmax = 0.0;
 387    double dmin = 0.0;
 388    Evas_Coord dist;
 389    Eina_Bool change = EINA_FALSE;
 390    char *label = NULL, *last = NULL;
 391    int i;
 392    int view_level;
 393    if (!wd) return;
 394
 395    SET_VIEW_LEVEL(wd, view_level);
 396    for (i = 0; i <= view_level; i++)
 397      {
 398         it_last = NULL;
 399         it_closest  = NULL;
 400         dist = 0x7fffffff;
 401         evas_object_geometry_get(wd->bx[i], &bx, &by, &bw, &bh);
 402         dmin = (double)(wd->min_1st_level_obj_height*wd->tot_items_count[1])/(2*(double)bh);
 403         dmax = 1.0-dmin-0.08;
 404         EINA_LIST_FOREACH(wd->items, l, it)
 405           {
 406              if (!((it->level == i) && (it->base.view))) continue;
 407              if (it->selected)
 408                {
 409                   it_last = it;
 410                   it->selected = 0;
 411                }
 412              evas_object_geometry_get(it->base.view, &x, &y, &w, &h);
 413              xx = x + (w / 2);
 414              yy = y + (h / 2);
 415              x = evx - xx;
 416              y = evy - yy;
 417              x = (x * x) + (y * y);
 418              if ((x < dist) || (!it_closest))
 419                {
 420                   if (wd->horizontal)
 421                     cdv = (double)(xx - bx) / (double)bw;
 422                   else
 423                     cdv = (double)(yy - by) / (double)bh;
 424                   it_closest = it;
 425                   dist = x;
 426                }
 427           }
 428           if ((i == 0) && (view_level == 0))
 429             {
 430                if(cdv > dmax || cdv < dmin)
 431                  {
 432                     if(cdv > dmax)
 433                       {
 434                          cdvv = dmax;
 435                       }
 436                     else
 437                       {
 438                          cdvv = dmin;
 439                       }
 440                     edje_object_part_drag_value_set(wd->base, "elm.dragable.index.1", cdv, cdvv);
 441                  }
 442                else
 443                  {
 444                     edje_object_part_drag_value_set(wd->base, "elm.dragable.index.1", cdv, cdv);
 445                  }
 446             }
 447         if (it_closest) it_closest->selected = 1;
 448         if (it_closest != it_last)
 449           {
 450              change = 1;
 451              if (it_last)
 452                {
 453                   const char *stacking, *selectraise;
 454
 455                   it = it_last;
 456                   if(view_level == it->level)
 457                   edje_object_signal_emit(it->base.view, "elm,state,inactive", "elm");
 458                   stacking = edje_object_data_get(it->base.view, "stacking");
 459                   selectraise = edje_object_data_get(it->base.view, "selectraise");
 460                   if ((selectraise) && (!strcmp(selectraise, "on")))
 461                     {
 462                        if ((stacking) && (!strcmp(stacking, "below")))
 463                          evas_object_lower(it->base.view);
 464                     }
 465                }
 466              if (it_closest)
 467                {
 468                   const char *selectraise;
 469
 470                   it = it_closest;
 471                   if(view_level == it->level)
 472                   edje_object_signal_emit(it->base.view, "elm,state,active", "elm");
 473                   selectraise = edje_object_data_get(it->base.view, "selectraise");
 474                   if ((selectraise) && (!strcmp(selectraise, "on")))
 475                     evas_object_raise(it->base.view);
 476                   evas_object_smart_callback_call((void *)obj, SIG_CHANGED, (void *)it->base.data);
 477                   if (wd->delay) ecore_timer_del(wd->delay);
 478                   wd->delay = ecore_timer_add(0.2, _delay_change, obj);
 479                }
 480           }
 481         if (it_closest)
 482           {
 483              it = it_closest;
 484              if (!last)
 485                last = strdup(it->letter);
 486              else
 487                {
 488                   if (!label) label = strdup(last);
 489                   else
 490                     {
 491                        /* FIXME: realloc return NULL if the request fails */
 492                        label = realloc(label, strlen(label) + strlen(last) + 1);
 493                        strcat(label, last);
 494                     }
 495                   free(last);
 496                   last = strdup(it->letter);
 497                }
 498           }
 499      }
 500    if (!label) label = strdup("");
 501    if (!last) last = strdup("");
 502    if(!wd->hide_button)
 503      {
 504         char *popup_text;
 505
 506         if(view_level == 0)
 507           {
 508              if(wd->tot_items_count[0])
 509                {
 510                   if (wd->popup_str[1]) wd->popup_str[1][0] = '\0';
 511                   wd->popup_str[0] = (char *)realloc(wd->popup_str[0], (sizeof(char) * strlen(last) + 1));
 512
 513                   strcpy(wd->popup_str[0], last);
 514                   edje_object_signal_emit(wd->base, "hide_2nd_level", "");
 515                }
 516              else
 517                {
 518                   edje_object_signal_emit(wd->base, "button.image.hidden", "");
 519                   if(label)free(label);
 520                   if(last) free(last);
 521                   return;
 522                }
 523           }
 524         if (view_level == 1 && wd->level_active[1])
 525           {
 526              if(wd->tot_items_count[1])
 527                {
 528                   wd->popup_str[1] = (char *)realloc(wd->popup_str[1], (sizeof(char) * strlen(last) + 1));
 529
 530                   strcpy(wd->popup_str[1], last);
 531                   edje_object_signal_emit(wd->base, "hide_first_level", "");
 532                }
 533              else
 534                {
 535                   edje_object_signal_emit(wd->base, "button.image.hidden", "");
 536                   if(label)free(label);
 537                   if(last) free(last);
 538                   return;
 539                }
 540           }
 541         popup_text = (char *)malloc(sizeof(char) * (strlen(wd->popup_str[0]) + strlen(wd->popup_str[1]) + 1));
 542         sprintf(popup_text, "%s%s", wd->popup_str[0], wd->popup_str[1]);
 543         edje_object_part_text_set(wd->base, "elm.text", popup_text);
 544
 545         free(popup_text);
 546      }
 547
 548    if(label)
 549      free(label);
 550    if(last)
 551      free(last);
 552 }
 553
 554 static void
 555 _wheel(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 556 {
 557    Widget_Data *wd = elm_widget_data_get(data);
 558    //   Evas_Event_Mouse_Wheel *ev = event_info;
 559    //   Evas_Object *obj = o;
 560    if (!wd) return;
 561 }
 562
 563 static void
 564 _mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 565 {
 566    Widget_Data *wd = elm_widget_data_get(data);
 567    Evas_Event_Mouse_Down *ev = event_info;
 568    Evas_Coord x, y, w;
 569    if (!wd) return;
 570    if (ev->button != 1) return;
 571    wd->down = 1;
 572    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 573    wd->dx = ev->canvas.x - x;
 574    wd->dy = ev->canvas.y - y;
 575    elm_index_active_set(data, 1);
 576    _sel_eval(data, ev->canvas.x, ev->canvas.y);
 577    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer",
 578                                    (!edje_object_mirrored_get(wd->base)) ? wd->dx : (wd->dx - w), wd->dy);
 579 }
 580
 581 static void
 582 _mouse_up(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 583 {
 584    Widget_Data *wd = elm_widget_data_get(data);
 585    Evas_Event_Mouse_Up *ev = event_info;
 586    void *d;
 587    Elm_Index_Item *it;
 588    Eina_List *l;
 589    int view_level;
 590
 591    if (!wd) return;
 592    if (ev->button != 1) return;
 593    if (wd->level == 1 && wd->delay) ecore_timer_del(wd->delay);
 594    wd->delay = NULL;
 595    wd->down = 0;
 596    SET_VIEW_LEVEL(wd, view_level);
 597    d = (void *)elm_index_item_selected_get(data, view_level);
 598    EINA_LIST_FOREACH(wd->items, l, it)
 599      {
 600         edje_object_signal_emit(it->base.view, "elm,state,inactive", "elm");
 601      }
 602    if (d) evas_object_smart_callback_call(data, SIG_SELECTED, d);
 603    elm_index_active_set(data, 0);
 604    edje_object_signal_emit(wd->base, "elm,state,level,0", "elm");
 605 }
 606
 607 static void
 608 _mouse_move(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 609 {
 610    Widget_Data *wd = elm_widget_data_get(data);
 611    Evas_Event_Mouse_Move *ev = event_info;
 612    Evas_Coord minw = 0, minh = 0, x, y, dx, adx, w;
 613    void *d;
 614    char buf[1024];
 615    if (!wd) return;
 616    if (!wd->down) return;
 617    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 618    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 619    x = ev->cur.canvas.x - x;
 620    y = ev->cur.canvas.y - y;
 621    dx = x - wd->dx;
 622    adx = dx;
 623    if (adx < 0) adx = -dx;
 624    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer"
 625                                    , (!edje_object_mirrored_get(wd->base)) ? x : (x - w), y);
 626    if (!wd->horizontal)
 627      {
 628         if (adx > minw)
 629           {
 630              if (!wd->level)
 631                {
 632                   wd->level = 1;
 633                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 634                   edje_object_signal_emit(wd->base, buf, "elm");
 635                   evas_object_smart_callback_call(data, SIG_LEVEL_UP, NULL);
 636                }
 637           }
 638         else
 639           {
 640              if (wd->level == 1)
 641                {
 642                   wd->level = 0;
 643                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 644                   edje_object_signal_emit(wd->base, buf, "elm");
 645                   d = (void *)elm_index_item_selected_get(data, wd->level);
 646                   evas_object_smart_callback_call(data, "changed", d);
 647                   if (wd->delay) ecore_timer_del(wd->delay);
 648                   wd->delay = ecore_timer_add(0.2, _delay_change, data);
 649                   evas_object_smart_callback_call(data, SIG_LEVEL_DOWN, NULL);
 650                }
 651           }
 652      }
 653    _sel_eval(data, ev->cur.canvas.x, ev->cur.canvas.y);
 654 }
 655
 656 static void
 657 _index_box_refill_job(void *data)
 658 {
 659    Widget_Data *wd = elm_widget_data_get((Evas_Object *)data);
 660    if (!wd) return;
 661
 662    const char *string;
 663    Evas_Coord pw, ph;
 664
 665    evas_object_geometry_get(wd->base, NULL, NULL, &pw, &ph);
 666    wd->scale_factor = elm_scale_get();
 667    if ( wd->scale_factor == 0.0 ) {
 668      wd->scale_factor = 1.0;
 669    }
 670    string = edje_object_data_get(wd->base, "min_obj_height");
 671    if(string)
 672      wd->min_obj_height = (int) (atoi(string))*wd->scale_factor;
 673    else
 674      wd->min_obj_height = MIN_OBJ_HEIGHT*wd->scale_factor;
 675    if(!wd->min_obj_height) return;
 676
 677    wd->max_grp_size = wd->min_obj_height - 2*MIN_GRP_SIZE;
 678    wd->items_count = ph/wd->min_obj_height;
 679    wd->max_supp_items_count = wd->max_grp_size*(int)((wd->items_count-1)*0.5)+wd->items_count;
 680
 681    if(pw != wd->pwidth && ph != wd->pheight)
 682      {
 683         if(wd->down == 1)
 684           {
 685              wd->active = 0;
 686              elm_index_active_set(data, 1);
 687           }
 688         _index_box_clear((Evas_Object *)data, wd->bx[0], 0);
 689         evas_object_smart_calculate( wd->bx[0]);
 690         elm_index_item_go((Evas_Object *)data, wd->level);
 691         wd->pwidth = pw;
 692         wd->pheight = ph;
 693      }
 694 }
 695
 696 static void _index_object_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 697 {
 698    Widget_Data *wd;
 699    if(!data) return;
 700    wd = elm_widget_data_get((Evas_Object *)data);
 701    if(!wd) return;
 702    ecore_job_add(_index_box_refill_job, (Evas_Object *)data);
 703 }
 704
 705 EAPI Evas_Object *
 706 elm_index_add(Evas_Object *parent)
 707 {
 708    Evas_Object *obj;
 709    Evas_Object *o;
 710    Evas *e;
 711    Widget_Data *wd;
 712    Evas_Coord minw, minh;
 713    const char *string;
 714
 715    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 716
 717    ELM_SET_WIDTYPE(widtype, "index");
 718    elm_widget_type_set(obj, "index");
 719    elm_widget_sub_object_add(parent, obj);
 720    elm_widget_data_set(obj, wd);
 721    elm_widget_del_hook_set(obj, _del_hook);
 722    elm_widget_del_pre_hook_set(obj, _del_pre_hook);
 723    elm_widget_theme_hook_set(obj, _theme_hook);
 724    elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
 725    elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
 726    elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
 727    elm_widget_can_focus_set(obj, EINA_FALSE);
 728
 729    wd->horizontal = EINA_FALSE;
 730    wd->min_obj_height = 0;
 731    wd->max_grp_size = 0;
 732    wd->items_count = 0;
 733    wd->max_supp_items_count = 0;
 734    wd->tot_items_count[0] = 0;
 735    wd->tot_items_count[1] = 0;
 736    wd->hide_button = 0;
 737    wd->special_char = edje_object_data_get(wd->base, "special_char");
 738    if(wd->special_char == NULL)  wd->special_char = eina_stringshare_add("*");
 739
 740    wd->base = edje_object_add(e);
 741    _elm_theme_object_set(obj, wd->base, "index", "base/vertical", "default");
 742    elm_widget_resize_object_set(obj, wd->base);
 743
 744    o = evas_object_rectangle_add(e);
 745    wd->event[0] = o;
 746    evas_object_color_set(o, 0, 0, 0, 0);
 747    minw = minh = 0;
 748    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 749    evas_object_size_hint_min_set(o, minw, minh);
 750    edje_object_part_swallow(wd->base, "elm.swallow.event.0", o);
 751    elm_widget_sub_object_add(obj, o);
 752    evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE, _index_object_resize, obj);
 753    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_WHEEL, _wheel, obj);
 754    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _mouse_down, obj);
 755    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_UP, _mouse_up, obj);
 756    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_MOVE, _mouse_move, obj);
 757    evas_object_show(o);
 758    if (edje_object_part_exists(wd->base, "elm.swallow.event.1"))
 759      {
 760         o = evas_object_rectangle_add(e);
 761         wd->event[1] = o;
 762         evas_object_color_set(o, 0, 0, 0, 0);
 763         evas_object_size_hint_min_set(o, minw, minh);
 764         edje_object_part_swallow(wd->base, "elm.swallow.event.1", o);
 765         elm_widget_sub_object_add(obj, o);
 766      }
 767
 768    wd->bx[0] = evas_object_box_add(e);
 769    evas_object_box_layout_set(wd->bx[0], _layout, wd, NULL);
 770    elm_widget_sub_object_add(obj, wd->bx[0]);
 771    edje_object_part_swallow(wd->base, "elm.swallow.index.0", wd->bx[0]);
 772    evas_object_show(wd->bx[0]);
 773
 774    if (edje_object_part_exists(wd->base, "elm.swallow.index.1"))
 775      {
 776         wd->bx[1] = evas_object_box_add(e);
 777         evas_object_box_layout_set(wd->bx[1], _layout, wd, NULL);
 778         elm_widget_sub_object_add(obj, wd->bx[1]);
 779         edje_object_part_swallow(wd->base, "elm.swallow.index.1", wd->bx[1]);
 780         evas_object_show(wd->bx[1]);
 781      }
 782
 783    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 784    wd->scale_factor = elm_scale_get();
 785    if ( wd->scale_factor == 0.0 )
 786                 wd->scale_factor = 1.0;
 787    string = edje_object_data_get(wd->base, "min_1st_level_obj_height");
 788    if(string)
 789      wd->min_1st_level_obj_height = (int) (atoi(string))*wd->scale_factor;
 790    else
 791      wd->min_1st_level_obj_height = MIN_OBJ_HEIGHT*wd->scale_factor;
 792    wd->popup_str[0] = calloc(1, sizeof(char) * 1);
 793    wd->popup_str[1] = calloc(1, sizeof(char) * 1);
 794
 795    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 796    _sizing_eval(obj);
 797    return obj;
 798 }
 799
 800 static int
 801 _group_count(Evas_Object *obj, int extraIndex, int adj_pos, int vis_pos)
 802 {
 803    Widget_Data *wd = elm_widget_data_get(obj);
 804    if (!wd) return 0;
 805    int group_count = MIN_GRP_SIZE;
 806    while(group_count <= wd->max_grp_size)
 807      {
 808         if(extraIndex <= wd->max_grp_size*adj_pos)
 809           {
 810              if(group_count*adj_pos>=extraIndex) return group_count;
 811           }
 812         else
 813           return wd->max_grp_size;
 814
 815         group_count += MIN_GRP_SIZE;
 816      }
 817    return group_count;
 818 }
 819
 820 static void
 821 _index_process(Evas_Object *obj)
 822 {
 823    int extraIndex;
 824    int j,i, group_count;
 825    Eina_List *l;
 826    Elm_Index_Item *it;
 827    int count;
 828    int n;
 829
 830    Widget_Data *wd = elm_widget_data_get(obj);
 831    if (!wd) return;
 832
 833    if (wd->items_count == 0) return;
 834
 835    const int adj_pos = (wd->items_count-1)*0.5;
 836    if(wd->tot_items_count[wd->level] <= wd->max_supp_items_count)
 837       n = wd->tot_items_count[wd->level];
 838    else
 839       n = wd->max_supp_items_count;
 840    group_count = MIN_GRP_SIZE;
 841
 842    int *indx = (int*)calloc(n, sizeof(int));
 843    if (!indx) return;
 844
 845    const int minh = wd->min_obj_height;
 846    EINA_LIST_FOREACH(wd->items, l, it)
 847      {
 848         it->vis_letter = eina_stringshare_add(it->letter);
 849         it->size =  minh;
 850      }
 851    int remainder;
 852    int numberofparts;
 853    int N = wd->items_count;
 854
 855    for (i=0;i<n;i++)
 856      {
 857         indx[i] = minh;
 858      }
 859    extraIndex=n-N;
 860    if (extraIndex < 0) return;
 861
 862    group_count = _group_count(obj, extraIndex, adj_pos, N);
 863    if (group_count <= 0)
 864      {
 865         if (indx)
 866           free(indx);
 867         indx = NULL;
 868         return;
 869      }
 870
 871    PlacementPart place[adj_pos];
 872    remainder = extraIndex%group_count;
 873    numberofparts=(extraIndex/group_count)+(remainder == 0? 0: 1);
 874
 875    for (i=0;i<numberofparts; i++)
 876      {
 877         place[i].count=group_count+1;
 878         count = (int)(((float)(i+1)/(float)(numberofparts+1))*N);
 879         place[i].start= count +i*group_count-1;
 880      }
 881    if (remainder)
 882      place[numberofparts-1].count=remainder+1;
 883
 884    for (i=0;i<numberofparts;i++)
 885      {
 886         for (j=0;j<place[i].count; j++)
 887           {
 888              indx[((place[i].start)+j)]= MIN_PIXEL_VALUE;
 889           }
 890         indx[(place[i].start+(place[i].count)/2)] = minh-place[i].count+1;
 891      }
 892    count = 0;
 893    EINA_LIST_FOREACH(wd->items, l, it)
 894      {
 895         int size = indx[count];
 896         count++;
 897         if (size == minh)
 898           {
 899              it->vis_letter = eina_stringshare_add(it->letter);
 900              continue;
 901           }
 902         else if (size == 1)
 903           {
 904              eina_stringshare_del(it->vis_letter);
 905              it->vis_letter = eina_stringshare_add("");
 906           }
 907         else
 908           {
 909              eina_stringshare_del(it->vis_letter);
 910              it->vis_letter = eina_stringshare_add(wd->special_char);
 911           }
 912         it->size = size*wd->scale_factor;
 913      }
 914    if (indx)
 915      {
 916         free(indx);
 917         indx = NULL;
 918      }
 919 }
 920
 921 EAPI void
 922 elm_index_active_set(Evas_Object *obj, Eina_Bool active)
 923 {
 924    ELM_CHECK_WIDTYPE(obj, widtype);
 925    Widget_Data *wd = elm_widget_data_get(obj);
 926    if (!wd) return;
 927    if (wd->active == active) return;
 928    wd->active = active;
 929    wd->level = 0;
 930    if (wd->active)
 931      {
 932         _index_box_clear(obj, wd->bx[1], 1);
 933         _index_process(obj);
 934         _index_box_auto_fill(obj, wd->bx[0], 0);
 935         if(wd->tot_items_count[wd->level])
 936           edje_object_signal_emit(wd->base, "elm,state,active", "elm");
 937         else
 938           edje_object_signal_emit(wd->base, "button.image.hidden", "");
 939      }
 940    else
 941      edje_object_signal_emit(wd->base, "elm,state,inactive", "elm");
 942 }
 943
 944 EAPI Eina_Bool
 945 elm_index_active_get(const Evas_Object *obj)
 946 {
 947    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 948    Widget_Data *wd = elm_widget_data_get(obj);
 949    if (!wd) return EINA_FALSE;
 950    return wd->active;
 951 }
 952
 953 EAPI void
 954 elm_index_item_level_set(Evas_Object *obj, int level)
 955 {
 956    ELM_CHECK_WIDTYPE(obj, widtype);
 957    Widget_Data *wd = elm_widget_data_get(obj);
 958    if (!wd) return;
 959    if (wd->level == level) return;
 960    wd->level = level;
 961 }
 962
 963 EAPI int
 964 elm_index_item_level_get(const Evas_Object *obj)
 965 {
 966    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 967    Widget_Data *wd = elm_widget_data_get(obj);
 968    if (!wd) return 0;
 969    return wd->level;
 970 }
 971
 972 EAPI void *
 973 elm_index_item_selected_get(const Evas_Object *obj, int level)
 974 {
 975    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 976    Widget_Data *wd = elm_widget_data_get(obj);
 977    Eina_List *l;
 978    Elm_Index_Item *it;
 979    if (!wd) return NULL;
 980    EINA_LIST_FOREACH(wd->items, l, it)
 981       if ((it->selected) && (it->level == level))
 982         return elm_widget_item_data_get(it);
 983    return NULL;
 984 }
 985
 986 EAPI void
 987 elm_index_item_append(Evas_Object *obj, const char *letter, const void *item)
 988 {
 989    ELM_CHECK_WIDTYPE(obj, widtype);
 990    Widget_Data *wd = elm_widget_data_get(obj);
 991    Elm_Index_Item *it;
 992    if (!wd) return;
 993    it = _item_new(obj, letter, item);
 994    if (!it) return;
 995    wd->items = eina_list_append(wd->items, it);
 996    wd->tot_items_count[wd->level]++;
 997    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 998 }
 999
1000 EAPI void
1001 elm_index_item_prepend(Evas_Object *obj, const char *letter, const void *item)
1002 {
1003    ELM_CHECK_WIDTYPE(obj, widtype);
1004    Widget_Data *wd = elm_widget_data_get(obj);
1005    Elm_Index_Item *it;
1006
1007    if (!wd) return;
1008    it = _item_new(obj, letter, item);
1009    if (!it) return;
1010    wd->items = eina_list_prepend(wd->items, it);
1011    wd->tot_items_count[wd->level]++;
1012    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1013 }
1014
1015 EAPI void
1016 elm_index_item_append_relative(Evas_Object *obj, const char *letter, const void *item, const void *relative)
1017 {
1018    ELM_CHECK_WIDTYPE(obj, widtype);
1019    Widget_Data *wd = elm_widget_data_get(obj);
1020    Elm_Index_Item *it, *it_rel;
1021    if (!wd) return;
1022    if (!relative)
1023      {
1024         elm_index_item_append(obj, letter, item);
1025         wd->tot_items_count[wd->level]++;
1026         return;
1027      }
1028    it = _item_new(obj, letter, item);
1029    if (!it) return;
1030
1031    it_rel = _item_find(obj, relative);
1032    if (!it_rel)
1033      {
1034         elm_index_item_append(obj, letter, item);
1035         wd->tot_items_count[wd->level]++;
1036         return;
1037      }
1038
1039    wd->items = eina_list_append_relative(wd->items, it, it_rel);
1040    wd->tot_items_count[wd->level]++;
1041    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1042 }
1043
1044 EAPI void
1045 elm_index_item_prepend_relative(Evas_Object *obj, const char *letter, const void *item, const void *relative)
1046 {
1047    ELM_CHECK_WIDTYPE(obj, widtype);
1048    Widget_Data *wd = elm_widget_data_get(obj);
1049    Elm_Index_Item *it, *it_rel;
1050    if (!wd) return;
1051    if (!relative)
1052      {
1053         elm_index_item_prepend(obj, letter, item);
1054         wd->tot_items_count[wd->level]++;
1055         return;
1056      }
1057    it = _item_new(obj, letter, item);
1058    if (!it) return;
1059
1060    it_rel = _item_find(obj, relative);
1061    if (!it_rel)
1062      {
1063         elm_index_item_append(obj, letter, item);
1064         wd->tot_items_count[wd->level]++;
1065         return;
1066      }
1067
1068    wd->items = eina_list_prepend_relative(wd->items, it, it_rel);
1069    wd->tot_items_count[wd->level]++;
1070    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1071 }
1072
1073 EAPI void
1074 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)
1075 {
1076    ELM_CHECK_WIDTYPE(obj, widtype);
1077    Widget_Data *wd = elm_widget_data_get(obj);
1078    Eina_List *lnear;
1079    Elm_Index_Item *it;
1080    int cmp;
1081
1082    if (!wd) return;
1083    if (!(wd->items))
1084      {
1085         elm_index_item_append(obj, letter, item);
1086         return;
1087      }
1088
1089    it = _item_new(obj, letter, item);
1090    if (!it) return;
1091
1092    lnear = eina_list_search_sorted_near_list(wd->items, cmp_func, it, &cmp);
1093    if (cmp < 0)
1094      wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
1095    else if (cmp > 0)
1096      wd->items = eina_list_prepend_relative_list(wd->items, it, lnear);
1097    else
1098      {
1099         /* If cmp_data_func is not provided, append a duplicated item */
1100         if (!cmp_data_func)
1101           wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
1102         else
1103           {
1104              Elm_Index_Item *p_it = eina_list_data_get(lnear);
1105              if (cmp_data_func(p_it->base.data, it->base.data) >= 0)
1106                p_it->base.data = it->base.data;
1107              _item_free(it);
1108           }
1109      }
1110
1111    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1112 }
1113
1114 EAPI void
1115 elm_index_item_del(Evas_Object *obj, const void *item)
1116 {
1117    ELM_CHECK_WIDTYPE(obj, widtype);
1118    Widget_Data *wd = elm_widget_data_get(obj);
1119    Elm_Index_Item *it;
1120    if (!wd) return;
1121    it = _item_find(obj, item);
1122    if (!it) return;
1123    _item_free(it);
1124    wd->tot_items_count[wd->level]--;
1125    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1126 }
1127
1128 EAPI Elm_Index_Item *
1129 elm_index_item_find(Evas_Object *obj, const void *item)
1130 {
1131    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1132    Widget_Data *wd = elm_widget_data_get(obj);
1133    if (!wd) return NULL;
1134    return _item_find(obj, item);
1135 }
1136
1137 EAPI void
1138 elm_index_item_clear(Evas_Object *obj)
1139 {
1140    ELM_CHECK_WIDTYPE(obj, widtype);
1141    Widget_Data *wd = elm_widget_data_get(obj);
1142    Elm_Index_Item *it;
1143    Eina_List *l, *clear = NULL;
1144    if (!wd) return;
1145    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1146    EINA_LIST_FOREACH(wd->items, l, it)
1147      {
1148         if (it->level != wd->level) continue;
1149         clear = eina_list_append(clear, it);
1150      }
1151    EINA_LIST_FREE(clear, it)
1152      {
1153         _item_free(it);
1154         wd->tot_items_count[wd->level]--;
1155      }
1156 }
1157
1158 EAPI void
1159 elm_index_item_go(Evas_Object *obj, int level)
1160 {
1161    ELM_CHECK_WIDTYPE(obj, widtype);
1162    Widget_Data *wd = elm_widget_data_get(obj);
1163    if (!wd) return;
1164    if(level == 0)
1165      _index_process(obj);
1166    _index_box_auto_fill(obj, wd->bx[0], 0);
1167    if (wd->level == 1) _index_box_auto_fill(obj, wd->bx[1], 1);
1168 }
1169
1170 EAPI void *
1171 elm_index_item_data_get(const Elm_Index_Item *it)
1172 {
1173    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it, NULL);
1174    return elm_widget_item_data_get(it);
1175 }
1176
1177 EAPI void
1178 elm_index_item_data_set(Elm_Index_Item *it, const void *data)
1179 {
1180    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it);
1181    elm_widget_item_data_set(it, data);
1182 }
1183
1184 EAPI void
1185 elm_index_button_image_invisible_set(Evas_Object *obj, Eina_Bool invisible)
1186 {
1187    ELM_CHECK_WIDTYPE(obj, widtype);
1188    Widget_Data *wd = elm_widget_data_get(obj);
1189    wd->hide_button = invisible;
1190
1191    edje_object_signal_emit(wd->base, "elm,state,button,image,hide", "elm");
1192    return;
1193 }
1194
1195 EAPI void
1196 elm_index_item_del_cb_set(Elm_Index_Item *it, Evas_Smart_Cb func)
1197 {
1198    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it);
1199    elm_widget_item_del_cb_set(it, func);
1200 }
1201
1202 EAPI const char *
1203 elm_index_item_letter_get(const Elm_Index_Item *it)
1204 {
1205    ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it, NULL);
1206    return it->letter;
1207 }
1208