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elementary: add the possibility to set the amount of cached items in a slideshow 

SVN revision: 58821
This commit is contained in:
Michael BOUCHAUD 2011-04-22 09:19:25 +00:00
parent 7712efaf1b
commit f58b34afea
2 changed files with 143 additions and 27 deletions
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4
legacy/elementary/src/lib/Elementary.h.in
View File

@ -2002,6 +2002,10 @@ extern "C" {
EAPI const char *elm_slideshow_layout_get(const Evas_Object *obj) EINA_ARG_NONNULL(1);
EAPI void elm_slideshow_layout_set(Evas_Object *obj, const char *layout) EINA_ARG_NONNULL(1);
EAPI const Eina_List *elm_slideshow_layouts_get(const Evas_Object *obj) EINA_ARG_NONNULL(1);
EAPI void elm_slideshow_cache_before_set(Evas_Object *obj, int count) EINA_ARG_NONNULL(1);
EAPI int elm_slideshow_cache_before_get(const Evas_Object *obj) EINA_ARG_NONNULL(1);
EAPI void elm_slideshow_cache_after_set(Evas_Object *obj, int count) EINA_ARG_NONNULL(1);
EAPI int elm_slideshow_cache_after_get(const Evas_Object *obj) EINA_ARG_NONNULL(1);
/* smart callbacks called:
* "changed" - when the slideshow switch to another item
*/

166
legacy/elementary/src/lib/elm_slideshow.c
View File

@ -44,6 +44,8 @@ struct _Widget_Data
Eina_List *transitions;
const char *transition;
int count_item_pre_before;
int count_item_pre_after;
Ecore_Timer *timer;
double timeout;
Eina_Bool loop:1;
@ -213,9 +215,10 @@ _sub_del(void *data __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __
static void
_item_realize(Elm_Slideshow_Item *item)
{
Elm_Slideshow_Item *_item;
Elm_Slideshow_Item *_item_prev, *_item_next;
Evas_Object *obj = item->base.widget;
Widget_Data *wd = elm_widget_data_get(obj);
int ac, bc, lc;
if (!wd) return;
if ((!item->base.view) && (item->itc->func.get))
@ -230,39 +233,71 @@ _item_realize(Elm_Slideshow_Item *item)
wd->items_built = eina_list_demote_list(wd->items_built, item->l_built);
//pre-create previous and next item
_item = _item_next_get(item);
if ((_item) && (!_item->base.view) && (_item->itc->func.get))
ac = wd->count_item_pre_after;
_item_next = item;
bc = wd->count_item_pre_before;
_item_prev = item;
lc = eina_list_count(wd->items) - 1;
while (lc > 0 && ((ac > 0) || (bc > 0)))
{
_item->base.view = _item->itc->func.get((void*)_item->base.data, obj);
evas_object_smart_member_add(_item->base.view, obj);
_item->l_built = eina_list_append(NULL, _item);
wd->items_built = eina_list_merge(wd->items_built, _item->l_built);
evas_object_hide(_item->base.view);
}
else if ((_item) && (_item->l_built))
wd->items_built = eina_list_demote_list(wd->items_built, _item->l_built);
if (lc > 0 && ac > 0)
{
--ac;
--lc;
_item_next = _item_next_get(_item_next);
if ((_item_next)
&& (!_item_next->base.view)
&& (_item_next->itc->func.get))
{
_item_next->base.view =
_item_next->itc->func.get((void*)_item_next->base.data,
obj);
evas_object_smart_member_add(_item_next->base.view, obj);
_item_next->l_built = eina_list_append(NULL, _item_next);
wd->items_built = eina_list_merge(wd->items_built,
_item_next->l_built);
evas_object_hide(_item_next->base.view);
}
else if (_item_next && _item_next->l_built)
wd->items_built = eina_list_demote_list(wd->items_built,
_item_next->l_built);
}
_item = _item_prev_get(item);
if ((_item) && (!_item->base.view) && (_item->itc->func.get))
{
_item->base.view = _item->itc->func.get((void*)_item->base.data, obj);
evas_object_smart_member_add(_item->base.view, obj);
_item->l_built = eina_list_append(NULL, _item);
wd->items_built = eina_list_merge(wd->items_built, _item->l_built);
evas_object_hide(_item->base.view);
if (lc > 0 && bc > 0)
{
--bc;
--lc;
_item_prev = _item_prev_get(_item_prev);
if ((_item_prev)
&& (!_item_prev->base.view)
&& (_item_prev->itc->func.get))
{
_item_prev->base.view =
_item_prev->itc->func.get((void*)_item_prev->base.data,
obj);
evas_object_smart_member_add(_item_prev->base.view, obj);
_item_prev->l_built = eina_list_append(NULL, _item_prev);
wd->items_built = eina_list_merge(wd->items_built,
_item_prev->l_built);
evas_object_hide(_item_prev->base.view);
}
else if (_item_prev && _item_prev->l_built)
wd->items_built = eina_list_demote_list(wd->items_built,
_item_prev->l_built);
}
}
else if ((_item) && (_item->l_built))
wd->items_built = eina_list_demote_list(wd->items_built, _item->l_built);
//delete unused items
while (eina_list_count(wd->items_built) > 3)
lc = wd->count_item_pre_before + wd->count_item_pre_after + 1;
while (eina_list_count(wd->items_built) > lc)
{
_item = eina_list_data_get(wd->items_built);
wd->items_built = eina_list_remove_list(wd->items_built, wd->items_built);
item = eina_list_data_get(wd->items_built);
wd->items_built = eina_list_remove_list(wd->items_built,
wd->items_built);
if(item->itc->func.del)
item->itc->func.del((void*)item->base.data, _item->base.view);
evas_object_del(_item->base.view);
_item->base.view = NULL;
item->itc->func.del((void*)item->base.data, item->base.view);
evas_object_del(item->base.view);
item->base.view = NULL;
}
}
@ -340,6 +375,8 @@ elm_slideshow_add(Evas_Object *parent)
wd->slideshow = edje_object_add(e);
_elm_theme_object_set(obj, wd->slideshow, "slideshow", "base", "default");
evas_object_smart_member_add(wd->slideshow, obj);
wd->count_item_pre_before = 2;
wd->count_item_pre_after = 2;
elm_widget_resize_object_set(obj, wd->slideshow);
evas_object_show(wd->slideshow);
@ -820,3 +857,78 @@ elm_slideshow_item_data_get(const Elm_Slideshow_Item * item)
ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(item, NULL);
return elm_widget_item_data_get(item);
}
/**
* Returns max amount of cached items before current
*
* @param obj The slideshow object
* @return Returns max amount of cached items
*
* @ingroup Slideshow
*/
EAPI int
elm_slideshow_cache_before_get(const Evas_Object *obj)
{
ELM_CHECK_WIDTYPE(obj, widtype) -1;
Widget_Data *wd = elm_widget_data_get(obj);
if (!wd) return -1;
return wd->count_item_pre_before;
}
/**
* Set max amount of cached items before current
*
* @param obj The slideshow object
* @param count Max amount of cached items
*
* @ingroup Slideshow
*/
EAPI void
elm_slideshow_cache_before_set(Evas_Object *obj, int count)
{
ELM_CHECK_WIDTYPE(obj, widtype);
Widget_Data *wd = elm_widget_data_get(obj);
if (!wd) return;
if (count < 0) count = 0;
wd->count_item_pre_before = count;
}
/**
* Returns max amount of cached items after current
*
* @param obj The slideshow object
* @return Returns max amount of cached items
*
* @ingroup Slideshow
*/
EAPI int
elm_slideshow_cache_after_get(const Evas_Object *obj)
{
ELM_CHECK_WIDTYPE(obj, widtype) -1;
Widget_Data *wd = elm_widget_data_get(obj);
if (!wd) return -1;
return wd->count_item_pre_after;
}
/**
* Set max amount of cached items after current
*
* @param obj The slideshow object
* @param count max amount of cached items
*
* @ingroup Slideshow
*/
EAPI void
elm_slideshow_cache_after_set(Evas_Object *obj, int count)
{
ELM_CHECK_WIDTYPE(obj, widtype);
Widget_Data *wd = elm_widget_data_get(obj);
if (!wd) return;
if (count < 0) count = 0;
wd->count_item_pre_after = count;
}