src/lib/elm_index.c

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