src/lib/elm_slideshow.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 typedef struct _Widget_Data Widget_Data;
   5
   6 typedef struct _Elm_Slideshow_Item Elm_Slideshow_Item;
   7
   8 struct _Elm_Slideshow_Item
   9 {
  10    ELM_WIDGET_ITEM;
  11
  12    Eina_List *l, *l_built;
  13
  14    const Elm_Slideshow_Item_Class *itc;
  15 };
  16
  17 struct _Widget_Data
  18 {
  19    Evas_Object *slideshow;
  20
  21    // list of Elm_Slideshow_Item*
  22    Eina_List *items;
  23    Eina_List *items_built;
  24
  25    Elm_Slideshow_Item *current;
  26    Elm_Slideshow_Item *previous;
  27
  28    Eina_List *transitions;
  29    const char *transition;
  30
  31    int count_item_pre_before;
  32    int count_item_pre_after;
  33    Ecore_Timer *timer;
  34    double timeout;
  35    Eina_Bool loop:1;
  36
  37    struct {
  38         const char *current;
  39         Eina_List *list; //list of const char *
  40    } layout;
  41 };
  42
  43 static const char *widtype = NULL;
  44 static void _del_pre_hook(Evas_Object *obj);
  45 static void _del_hook(Evas_Object *obj);
  46 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  47 static void _theme_hook(Evas_Object *obj);
  48 static void _sizing_eval(Evas_Object *obj);
  49 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
  50 static Eina_Bool _timer_cb(void *data);
  51 static void _on_focus_hook(void *data, Evas_Object *obj);
  52 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
  53                              Evas_Callback_Type type, void *event_info);
  54
  55 static const char SIG_CHANGED[] = "changed";
  56 static const char SIG_TRANSITION_END[] = "transition,end";
  57
  58 static const Evas_Smart_Cb_Description _signals[] = {
  59    {SIG_CHANGED, ""},
  60    {SIG_TRANSITION_END, ""},
  61    {NULL, NULL}
  62 };
  63
  64 static Eina_Bool
  65 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
  66 {
  67    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
  68    Evas_Event_Key_Down *ev = event_info;
  69    Widget_Data *wd = elm_widget_data_get(obj);
  70    if (!wd) return EINA_FALSE;
  71    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
  72    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
  73    if ((!strcmp(ev->keyname, "Left")) || (!strcmp(ev->keyname, "KP_Left")))
  74      {
  75         elm_slideshow_previous(obj);
  76         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  77         return EINA_TRUE;
  78      }
  79    if ((!strcmp(ev->keyname, "Right")) || (!strcmp(ev->keyname, "KP_Right")))
  80      {
  81         elm_slideshow_next(obj);
  82         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
  83         return EINA_TRUE;
  84      }
  85    if ((!strcmp(ev->keyname, "Return")) ||
  86        (!strcmp(ev->keyname, "KP_Enter")) ||
  87        (!strcmp(ev->keyname, "space")))
  88      {
  89         if (wd->timeout)
  90           {
  91              if (wd->timer)
  92                {
  93                   ecore_timer_del(wd->timer);
  94                   wd->timer = NULL;
  95                }
  96              else
  97                elm_slideshow_timeout_set(obj, wd->timeout);
  98           }
  99         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 100         return EINA_TRUE;
 101      }
 102    return EINA_FALSE;
 103 }
 104
 105 static void
 106 _del_pre_hook(Evas_Object *obj)
 107 {
 108    Widget_Data *wd = elm_widget_data_get(obj);
 109    if (!wd) return;
 110    evas_object_event_callback_del_full(obj, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
 111                                        _changed_size_hints, obj);
 112 }
 113
 114 static void
 115 _del_hook(Evas_Object *obj)
 116 {
 117    const char *layout;
 118    Widget_Data *wd = elm_widget_data_get(obj);
 119    if (!wd) return;
 120    elm_slideshow_clear(obj);
 121    elm_widget_stringlist_free(wd->transitions);
 122    if (wd->timer) ecore_timer_del(wd->timer);
 123    EINA_LIST_FREE(wd->layout.list, layout)
 124       eina_stringshare_del(layout);
 125    free(wd);
 126 }
 127
 128 static void
 129 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
 130 {
 131    Widget_Data *wd = elm_widget_data_get(obj);
 132    if (!wd) return;
 133    if (elm_widget_focus_get(obj))
 134      {
 135         edje_object_signal_emit(wd->slideshow, "elm,action,focus", "elm");
 136         evas_object_focus_set(wd->slideshow, EINA_TRUE);
 137      }
 138    else
 139      {
 140         edje_object_signal_emit(wd->slideshow, "elm,action,unfocus", "elm");
 141         evas_object_focus_set(wd->slideshow, EINA_FALSE);
 142      }
 143 }
 144
 145 static void
 146 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
 147 {
 148    Widget_Data *wd = elm_widget_data_get(obj);
 149    if (!wd) return;
 150    edje_object_mirrored_set(wd->slideshow, rtl);
 151 }
 152
 153 static void
 154 _theme_hook(Evas_Object *obj)
 155 {
 156    Widget_Data *wd = elm_widget_data_get(obj);
 157    if (!wd) return;
 158    _elm_widget_mirrored_reload(obj);
 159    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 160    _elm_theme_object_set(obj, wd->slideshow, "slideshow", "base", elm_widget_style_get(obj));
 161    edje_object_scale_set(wd->slideshow, elm_widget_scale_get(obj) *
 162                          _elm_config->scale);
 163    _sizing_eval(obj);
 164 }
 165
 166 static void
 167 _sizing_eval(Evas_Object *obj)
 168 {
 169    Widget_Data *wd = elm_widget_data_get(obj);
 170    Evas_Coord minw = -1, minh = -1;
 171    if (!wd) return;
 172    edje_object_size_min_calc(wd->slideshow, &minw, &minh);
 173    evas_object_size_hint_min_set(obj, minw, minh);
 174    evas_object_size_hint_max_set(obj, minw, minh);
 175 }
 176
 177
 178 static Elm_Slideshow_Item* _item_prev_get(Elm_Slideshow_Item* item)
 179 {
 180    Widget_Data *wd = elm_widget_data_get(WIDGET(item));
 181    Elm_Slideshow_Item* prev = eina_list_data_get(eina_list_prev(item->l));
 182    if ((!prev) && (wd->loop))
 183      prev = eina_list_data_get(eina_list_last(item->l));
 184    return prev;
 185 }
 186
 187 static Elm_Slideshow_Item* _item_next_get(Elm_Slideshow_Item* item)
 188 {
 189    Widget_Data *wd = elm_widget_data_get(WIDGET(item));
 190    Elm_Slideshow_Item* next = eina_list_data_get(eina_list_next(item->l));
 191    if ((!next) && (wd->loop))
 192      next = eina_list_data_get(wd->items);
 193    return next;
 194 }
 195
 196 static void
 197 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 198 {
 199    _sizing_eval(data);
 200 }
 201
 202 static void
 203 _sub_del(void *data __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 204 {
 205    ;
 206 }
 207
 208 static void
 209 _item_realize(Elm_Slideshow_Item *item)
 210 {
 211    Elm_Slideshow_Item *_item_prev, *_item_next;
 212    Evas_Object *obj = WIDGET(item);
 213    Widget_Data *wd = elm_widget_data_get(obj);
 214    int ac, bc, lc, ic = 0;
 215
 216    if (!wd) return;
 217    if ((!VIEW(item)) && (item->itc->func.get))
 218      {
 219         VIEW(item) = item->itc->func.get(elm_widget_item_data_get(item),
 220                                          obj);
 221         evas_object_smart_member_add(VIEW(item), obj);
 222         item->l_built = eina_list_append(NULL, item);
 223         wd->items_built = eina_list_merge(wd->items_built, item->l_built);
 224         evas_object_hide(VIEW(item));
 225      }
 226    else if (item->l_built)
 227      wd->items_built = eina_list_demote_list(wd->items_built, item->l_built);
 228
 229    //pre-create previous and next item
 230    ac = wd->count_item_pre_after;
 231    _item_next = item;
 232    bc = wd->count_item_pre_before;
 233    _item_prev = item;
 234    lc = eina_list_count(wd->items) - 1;
 235    while (lc > 0 && ((ac > 0) || (bc > 0)))
 236      {
 237         if (lc > 0 && ac > 0)
 238           {
 239              --ac;
 240              --lc;
 241              if (_item_next)
 242                {
 243                   _item_next = _item_next_get(_item_next);
 244                   if ((_item_next)
 245                       && (!VIEW(_item_next))
 246                       && (_item_next->itc->func.get))
 247                     {
 248                        ic++;
 249                        VIEW(_item_next) =
 250                           _item_next->itc->func.get(
 251                              elm_widget_item_data_get(_item_next), obj);
 252                        evas_object_smart_member_add(VIEW(_item_next), obj);
 253                        _item_next->l_built = eina_list_append(NULL, _item_next);
 254                        wd->items_built = eina_list_merge(wd->items_built,
 255                                                          _item_next->l_built);
 256                        evas_object_hide(VIEW(_item_next));
 257                     }
 258                   else if (_item_next && _item_next->l_built)
 259                     {
 260                        ic++;
 261                        wd->items_built =
 262                            eina_list_demote_list(wd->items_built,
 263                                              _item_next->l_built);
 264                     }
 265                }
 266           }
 267
 268         if (lc > 0 && bc > 0)
 269           {
 270              --bc;
 271              --lc;
 272              if (_item_prev)
 273                {
 274                   _item_prev = _item_prev_get(_item_prev);
 275                   if ((_item_prev)
 276                       && (!VIEW(_item_prev))
 277                       && (_item_prev->itc->func.get))
 278                     {
 279                        ic++;
 280                        VIEW(_item_prev) =
 281                           _item_prev->itc->func.get(
 282                              elm_widget_item_data_get(_item_prev), obj);
 283                        evas_object_smart_member_add(VIEW(_item_prev), obj);
 284                        _item_prev->l_built = eina_list_append(NULL, _item_prev);
 285                        wd->items_built = eina_list_merge(wd->items_built,
 286                                                          _item_prev->l_built);
 287                        evas_object_hide(VIEW(_item_prev));
 288                     }
 289                   else if (_item_prev && _item_prev->l_built)
 290                     {
 291                        ic++;
 292                        wd->items_built =
 293                            eina_list_demote_list(wd->items_built,
 294                                              _item_prev->l_built);
 295                     }
 296                }
 297           }
 298      }
 299
 300    //delete unused items
 301    lc = ic + 1;
 302    while ((int)eina_list_count(wd->items_built) > lc)
 303      {
 304         item = eina_list_data_get(wd->items_built);
 305         wd->items_built = eina_list_remove_list(wd->items_built,
 306                                                 wd->items_built);
 307         if (item->itc->func.del)
 308           item->itc->func.del(elm_widget_item_data_get(item), VIEW(item));
 309         evas_object_del(VIEW(item));
 310         VIEW(item) = NULL;
 311      }
 312 }
 313
 314 static void
 315 _end(void *data, Evas_Object *obj __UNUSED__, const char *emission, const char *source __UNUSED__)
 316 {
 317    Elm_Slideshow_Item *item;
 318    Widget_Data *wd = elm_widget_data_get(data);
 319    if (!wd) return;
 320
 321    item = wd->previous;
 322    if (item)
 323      {
 324         edje_object_part_unswallow(wd->slideshow, VIEW(item));
 325         evas_object_hide(VIEW(item));
 326         wd->previous = NULL;
 327      }
 328
 329    item = wd->current;
 330    if ((!item) || (!VIEW(item))) return;
 331
 332    _item_realize(item);
 333    edje_object_part_unswallow(wd->slideshow, VIEW(item));
 334
 335    edje_object_part_swallow(wd->slideshow, "elm.swallow.1", VIEW(item));
 336    edje_object_signal_emit(wd->slideshow, "anim,end", "slideshow");
 337    if (emission != NULL)
 338      evas_object_smart_callback_call(data, SIG_TRANSITION_END, wd->current);
 339 }
 340
 341 static Eina_Bool
 342 _timer_cb(void *data)
 343 {
 344    Evas_Object *obj = data;
 345    Widget_Data *wd = elm_widget_data_get(obj);
 346    if (!wd) return ECORE_CALLBACK_CANCEL;
 347    wd->timer = NULL;
 348    elm_slideshow_next(obj);
 349    return ECORE_CALLBACK_CANCEL;
 350 }
 351
 352 static void
 353 _item_del_pre_hook(Elm_Object_Item *it)
 354 {
 355    ELM_OBJ_ITEM_CHECK_OR_RETURN(it);
 356
 357    Elm_Slideshow_Item *item = (Elm_Slideshow_Item *) it;
 358    Widget_Data *wd = elm_widget_data_get(WIDGET(item));
 359    if (!wd) return;
 360    if (wd->previous == item) wd->previous = NULL;
 361    if (wd->current == item)
 362      {
 363         Eina_List *l = eina_list_data_find_list(wd->items, item);
 364         Eina_List *l2 = eina_list_next(l);
 365         wd->current = NULL;
 366         if (!l2)
 367           {
 368              l2 = eina_list_prev(l);
 369              if (l2)
 370                elm_slideshow_show(eina_list_data_get(l2));
 371
 372           }
 373         else
 374           elm_slideshow_show(eina_list_data_get(l2));
 375      }
 376
 377    wd->items = eina_list_remove_list(wd->items, item->l);
 378    wd->items_built = eina_list_remove_list(wd->items_built, item->l_built);
 379
 380    if ((VIEW(item)) && (item->itc->func.del))
 381      item->itc->func.del(elm_widget_item_data_get(item), VIEW(item));
 382 }
 383
 384 EAPI Evas_Object *
 385 elm_slideshow_add(Evas_Object *parent)
 386 {
 387    Evas_Object *obj;
 388    Evas *e;
 389    Widget_Data *wd;
 390
 391    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 392
 393    ELM_SET_WIDTYPE(widtype, "slideshow");
 394    elm_widget_type_set(obj, "slideshow");
 395    elm_widget_sub_object_add(parent, obj);
 396    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
 397    elm_widget_data_set(obj, wd);
 398    elm_widget_del_pre_hook_set(obj, _del_pre_hook);
 399    elm_widget_del_hook_set(obj, _del_hook);
 400    elm_widget_theme_hook_set(obj, _theme_hook);
 401    elm_widget_can_focus_set(obj, EINA_TRUE);
 402    elm_widget_event_hook_set(obj, _event_hook);
 403
 404    wd->current = NULL;
 405    wd->previous = NULL;
 406
 407    wd->slideshow = edje_object_add(e);
 408    _elm_theme_object_set(obj, wd->slideshow, "slideshow", "base", "default");
 409    evas_object_smart_member_add(wd->slideshow, obj);
 410    wd->count_item_pre_before = 2;
 411    wd->count_item_pre_after = 2;
 412    elm_widget_resize_object_set(obj, wd->slideshow);
 413    evas_object_show(wd->slideshow);
 414
 415    wd->transitions = elm_widget_stringlist_get(edje_object_data_get(wd->slideshow, "transitions"));
 416    if (eina_list_count(wd->transitions) > 0)
 417      wd->transition = eina_stringshare_add(eina_list_data_get(wd->transitions));
 418
 419    wd->layout.list = elm_widget_stringlist_get(edje_object_data_get(wd->slideshow, "layouts"));
 420    if (eina_list_count(wd->layout.list) > 0)
 421      wd->layout.current = eina_list_data_get(wd->layout.list);
 422
 423    edje_object_signal_callback_add(wd->slideshow, "end", "slideshow", _end, obj);
 424
 425    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
 426    evas_object_event_callback_add(obj, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
 427
 428    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 429
 430    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 431    _sizing_eval(obj);
 432    return obj;
 433 }
 434
 435 EAPI Elm_Object_Item*
 436 elm_slideshow_item_add(Evas_Object *obj, const Elm_Slideshow_Item_Class *itc, const void *data)
 437 {
 438    Elm_Slideshow_Item *item;
 439    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 440    Widget_Data *wd = elm_widget_data_get(obj);
 441
 442    if (!wd) return NULL;
 443    item = elm_widget_item_new(obj, Elm_Slideshow_Item);
 444    if (!item) return NULL;
 445    elm_widget_item_del_pre_hook_set(item, _item_del_pre_hook);
 446    item->itc = itc;
 447    item->l = eina_list_append(item->l, item);
 448    elm_widget_item_data_set(item, data);
 449
 450    wd->items = eina_list_merge(wd->items, item->l);
 451
 452    if (!wd->current) elm_slideshow_show((Elm_Object_Item *) item);
 453
 454    return (Elm_Object_Item *) item;
 455 }
 456
 457 EAPI Elm_Object_Item*
 458 elm_slideshow_item_sorted_insert(Evas_Object *obj, const Elm_Slideshow_Item_Class *itc, const void *data, Eina_Compare_Cb func)
 459 {
 460    Elm_Slideshow_Item *item;
 461    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 462    Widget_Data *wd = elm_widget_data_get(obj);
 463    if (!wd) return NULL;
 464
 465    item = elm_widget_item_new(obj, Elm_Slideshow_Item);
 466    if (!item) return NULL;
 467    elm_widget_item_del_pre_hook_set(item, _item_del_pre_hook);
 468    item->itc = itc;
 469    item->l = eina_list_append(item->l, item);
 470    elm_widget_item_data_set(item, data);
 471
 472    wd->items = eina_list_sorted_merge(wd->items, item->l, func);
 473
 474    if (!wd->current) elm_slideshow_show((Elm_Object_Item *) item);
 475
 476    return (Elm_Object_Item *) item;
 477 }
 478
 479 EAPI void
 480 elm_slideshow_show(Elm_Object_Item *it)
 481 {
 482    ELM_OBJ_ITEM_CHECK_OR_RETURN(it);
 483
 484    char buf[1024];
 485    Elm_Slideshow_Item *item, *next = NULL;
 486    Widget_Data *wd;
 487    item = (Elm_Slideshow_Item *) it;
 488    wd = elm_widget_data_get(WIDGET(item));
 489    if (!wd)  return;
 490    if (item == wd->current) return;
 491
 492    next = item;
 493    _end(WIDGET(item), WIDGET(item), NULL, NULL);
 494
 495    if (wd->timer) ecore_timer_del(wd->timer);
 496    if (wd->timeout > 0.0)
 497      wd->timer = ecore_timer_add(wd->timeout, _timer_cb, WIDGET(item));
 498    _item_realize(next);
 499    edje_object_part_swallow(wd->slideshow, "elm.swallow.2", VIEW(next));
 500    snprintf(buf, sizeof(buf), "%s,next", wd->transition);
 501    edje_object_signal_emit(wd->slideshow, buf, "slideshow");
 502    wd->previous = wd->current;
 503    wd->current = next;
 504    evas_object_smart_callback_call(WIDGET(item), SIG_CHANGED, wd->current);
 505 }
 506
 507 EAPI void
 508 elm_slideshow_next(Evas_Object *obj)
 509 {
 510    char buf[1024];
 511    Elm_Slideshow_Item *next = NULL;
 512    ELM_CHECK_WIDTYPE(obj, widtype);
 513    Widget_Data *wd = elm_widget_data_get(obj);
 514
 515    if (!wd) return;
 516
 517    if (wd->current)
 518      next = _item_next_get(wd->current);
 519
 520    if ((!next) || (next == wd->current)) return;
 521
 522    _end(obj, obj, NULL, NULL);
 523
 524    if (wd->timer) ecore_timer_del(wd->timer);
 525    if (wd->timeout > 0.0)
 526      wd->timer = ecore_timer_add(wd->timeout, _timer_cb, obj);
 527
 528    _item_realize(next);
 529
 530    edje_object_part_swallow(wd->slideshow, "elm.swallow.2", VIEW(next));
 531
 532    snprintf(buf, sizeof(buf), "%s,next", wd->transition);
 533    edje_object_signal_emit(wd->slideshow, buf, "slideshow");
 534
 535    wd->previous = wd->current;
 536    wd->current = next;
 537    evas_object_smart_callback_call(obj, SIG_CHANGED, wd->current);
 538 }
 539
 540 EAPI void
 541 elm_slideshow_previous(Evas_Object *obj)
 542 {
 543    char buf[1024];
 544    Elm_Slideshow_Item *prev = NULL;
 545    ELM_CHECK_WIDTYPE(obj, widtype);
 546    Widget_Data *wd = elm_widget_data_get(obj);
 547
 548    if (!wd) return;
 549
 550    if (wd->current)
 551      prev = _item_prev_get(wd->current);
 552
 553    if ((!prev) ||  (prev == wd->current)) return;
 554
 555    _end(obj, obj, NULL, NULL);
 556
 557    if (wd->timer) ecore_timer_del(wd->timer);
 558    if (wd->timeout > 0.0)
 559      wd->timer = ecore_timer_add(wd->timeout, _timer_cb, obj);
 560
 561    _item_realize(prev);
 562
 563    edje_object_part_swallow(wd->slideshow, "elm.swallow.2", VIEW(prev));
 564
 565    snprintf(buf, 1024, "%s,previous", wd->transition);
 566    edje_object_signal_emit(wd->slideshow, buf, "slideshow");
 567
 568    wd->previous = wd->current;
 569    wd->current = prev;
 570    evas_object_smart_callback_call(obj, SIG_CHANGED, wd->current);
 571 }
 572
 573 EAPI const Eina_List *
 574 elm_slideshow_transitions_get(const Evas_Object *obj)
 575 {
 576    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 577    Widget_Data *wd = elm_widget_data_get(obj);
 578    if (!wd) return NULL;
 579    return wd->transitions;
 580 }
 581
 582 EAPI const Eina_List *
 583 elm_slideshow_layouts_get(const Evas_Object *obj)
 584 {
 585    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 586    Widget_Data *wd = elm_widget_data_get(obj);
 587    if (!wd) return NULL;
 588    return wd->layout.list;
 589 }
 590
 591 EAPI void
 592 elm_slideshow_transition_set(Evas_Object *obj, const char *transition)
 593 {
 594    ELM_CHECK_WIDTYPE(obj, widtype);
 595    Widget_Data *wd = elm_widget_data_get(obj);
 596    if (!wd) return;
 597    eina_stringshare_replace(&wd->transition, transition);
 598 }
 599
 600 EAPI const char *
 601 elm_slideshow_transition_get(const Evas_Object *obj)
 602 {
 603    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 604    Widget_Data *wd = elm_widget_data_get(obj);
 605    if (!wd) return NULL;
 606    return wd->transition;
 607 }
 608
 609 EAPI void
 610 elm_slideshow_timeout_set(Evas_Object *obj, double timeout)
 611 {
 612    ELM_CHECK_WIDTYPE(obj, widtype);
 613    Widget_Data *wd = elm_widget_data_get(obj);
 614    if (!wd) return;
 615    wd->timeout = timeout;
 616    if (wd->timer) ecore_timer_del(wd->timer);
 617    wd->timer = NULL;
 618    if (timeout > 0.0)
 619      wd->timer = ecore_timer_add(timeout, _timer_cb, obj);
 620 }
 621
 622 EAPI double
 623 elm_slideshow_timeout_get(const Evas_Object *obj)
 624 {
 625    ELM_CHECK_WIDTYPE(obj, widtype) -1.0;
 626    Widget_Data *wd = elm_widget_data_get(obj);
 627    if (!wd) return -1.0;
 628    return wd->timeout;
 629 }
 630
 631 EAPI void
 632 elm_slideshow_loop_set(Evas_Object *obj, Eina_Bool loop)
 633 {
 634    ELM_CHECK_WIDTYPE(obj, widtype);
 635    Widget_Data *wd = elm_widget_data_get(obj);
 636    if (!wd) return;
 637    wd->loop = loop;
 638 }
 639
 640 EAPI const char *
 641 elm_slideshow_layout_get(const Evas_Object *obj)
 642 {
 643    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 644    Widget_Data *wd = elm_widget_data_get(obj);
 645    if (!wd) return EINA_FALSE;
 646    return wd->layout.current;
 647 }
 648
 649 EAPI void
 650 elm_slideshow_layout_set(Evas_Object *obj, const char *layout)
 651 {
 652    char buf[PATH_MAX];
 653    ELM_CHECK_WIDTYPE(obj, widtype);
 654    Widget_Data *wd = elm_widget_data_get(obj);
 655    if (!wd) return;
 656
 657    wd->layout.current = layout;
 658    snprintf(buf, sizeof(buf), "layout,%s", layout);
 659    edje_object_signal_emit(wd->slideshow, buf, "slideshow");
 660 }
 661
 662 EAPI Eina_Bool
 663 elm_slideshow_loop_get(const Evas_Object *obj)
 664 {
 665    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 666    Widget_Data *wd = elm_widget_data_get(obj);
 667    if (!wd) return EINA_FALSE;
 668    return wd->loop;
 669 }
 670
 671 EAPI void
 672 elm_slideshow_clear(Evas_Object *obj)
 673 {
 674    Elm_Slideshow_Item *item;
 675    ELM_CHECK_WIDTYPE(obj, widtype);
 676    Widget_Data *wd = elm_widget_data_get(obj);
 677    if (!wd) return;
 678    wd->previous = NULL;
 679    wd->current = NULL;
 680    EINA_LIST_FREE(wd->items_built, item)
 681      {
 682         if (item->itc->func.del)
 683           item->itc->func.del(elm_widget_item_data_get(item), VIEW(item));
 684      }
 685
 686    EINA_LIST_FREE(wd->items, item)
 687      elm_widget_item_free(item);
 688 }
 689
 690 EAPI void
 691 elm_slideshow_item_del(Elm_Object_Item *it)
 692 {
 693    elm_object_item_del(it);
 694 }
 695
 696 EAPI const Eina_List *
 697 elm_slideshow_items_get(const Evas_Object *obj)
 698 {
 699    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 700    Widget_Data *wd = elm_widget_data_get(obj);
 701    if (!wd) return NULL;
 702    return wd->items;
 703 }
 704
 705 EAPI Elm_Object_Item *
 706 elm_slideshow_item_current_get(const Evas_Object *obj)
 707 {
 708    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 709    Widget_Data *wd = elm_widget_data_get(obj);
 710    if (!wd) return NULL;
 711    return (Elm_Object_Item *) wd->current;
 712 }
 713
 714 EAPI Evas_Object *
 715 elm_slideshow_item_object_get(const Elm_Object_Item * it)
 716 {
 717    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
 718    return VIEW(it);
 719 }
 720
 721 EAPI void *
 722 elm_slideshow_item_data_get(const Elm_Object_Item * it)
 723 {
 724    return elm_object_item_data_get(it);
 725 }
 726
 727 EAPI int
 728 elm_slideshow_cache_before_get(const Evas_Object *obj)
 729 {
 730    ELM_CHECK_WIDTYPE(obj, widtype) -1;
 731    Widget_Data *wd = elm_widget_data_get(obj);
 732    if (!wd) return -1;
 733    return wd->count_item_pre_before;
 734 }
 735
 736 EAPI void
 737 elm_slideshow_cache_before_set(Evas_Object *obj, int count)
 738 {
 739    ELM_CHECK_WIDTYPE(obj, widtype);
 740    Widget_Data *wd = elm_widget_data_get(obj);
 741    if (!wd) return;
 742    if (count < 0) count = 0;
 743    wd->count_item_pre_before = count;
 744 }
 745
 746 EAPI int
 747 elm_slideshow_cache_after_get(const Evas_Object *obj)
 748 {
 749    ELM_CHECK_WIDTYPE(obj, widtype) -1;
 750    Widget_Data *wd = elm_widget_data_get(obj);
 751    if (!wd) return -1;
 752    return wd->count_item_pre_after;
 753 }
 754
 755 EAPI void
 756 elm_slideshow_cache_after_set(Evas_Object *obj, int count)
 757 {
 758    ELM_CHECK_WIDTYPE(obj, widtype);
 759    Widget_Data *wd = elm_widget_data_get(obj);
 760    if (!wd) return;
 761    if (count < 0) count = 0;
 762    wd->count_item_pre_after = count;
 763 }
 764
 765 EAPI Elm_Object_Item *
 766 elm_slideshow_item_nth_get(const Evas_Object *obj, unsigned int nth)
 767 {
 768    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 769    Widget_Data *wd = elm_widget_data_get(obj);
 770    if (!wd) return NULL;
 771    return eina_list_nth(wd->items, nth);
 772 }
 773
 774 EAPI unsigned int
 775 elm_slideshow_count_get(const Evas_Object *obj)
 776 {
 777    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 778    Widget_Data *wd = elm_widget_data_get(obj);
 779    if (!wd) return 0;
 780    return eina_list_count(wd->items);
 781 }