src/lib/elm_slideshow.c

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