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From: Seunggyun Kim <sgyun.kim@samsung.com> 

Subject: [E-devel] [Patch] elm_genlist - added auto scroll function
when expanding items.

Now, The user don't know how many items are added when the item is expanded in tree view.
If the use want to know how many items are added, they have to scroll
genlist view.

So I added auto scroll function when the items is expanded on bottom of viewport.
Using this, the user can know expanded items although that is expanded
beyond the view port.



SVN revision: 60302
This commit is contained in:
Seunggyun Kim 2011-06-14 09:18:54 +00:00 committed by Carsten Haitzler
parent 908cb7e56f
commit dc4627227f
1 changed files with 28 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
legacy/elementary/src/lib/elm_genlist.c
View File

@ -209,7 +209,7 @@ struct _Widget_Data
Ecore_Idle_Enterer *queue_idle_enterer;
Ecore_Idler *must_recalc_idler;
Eina_List *queue, *selected;
Elm_Genlist_Item *show_item, *last_selected_item, *anchor_item, *mode_item, *reorder_it, *reorder_rel;
Elm_Genlist_Item *show_item, *last_selected_item, *anchor_item, *mode_item, *reorder_it, *reorder_rel, *expanded_item;
Eina_Inlist *item_cache;
Evas_Coord anchor_y, reorder_start_y;
Elm_List_Mode mode;
@ -237,6 +237,7 @@ struct _Widget_Data
Eina_Bool swipe : 1;
Eina_Bool reorder_mode : 1;
Eina_Bool reorder_pan_move : 1;
Eina_Bool auto_scroll_enabled : 1;
struct
{
Evas_Coord x, y;
@ -404,6 +405,7 @@ static void _item_move_after(Elm_Genlist_Item *it,
Elm_Genlist_Item *after);
static void _item_move_before(Elm_Genlist_Item *it,
Elm_Genlist_Item *before);
static void _item_auto_scroll(Widget_Data *wd);
static Evas_Smart_Class _pan_sc = EVAS_SMART_CLASS_INIT_VERSION;
@ -2588,7 +2590,7 @@ _calc_job(void *data)
wd->minh = minh;
evas_object_smart_callback_call(wd->pan_smart, "changed", NULL);
_sizing_eval(wd->obj);
if ((wd->anchor_item) && (wd->anchor_item->block))
if ((wd->anchor_item) && (wd->anchor_item->block) && (!wd->auto_scroll_enabled))
{
Elm_Genlist_Item *it;
Evas_Coord it_y;
@ -2876,6 +2878,7 @@ _pan_calculate(Evas_Object *obj)
sd->wd->old_pan_y = sd->wd->pan_y;
sd->wd->start_time = ecore_loop_time_get();
}
_item_auto_scroll(sd->wd);
evas_event_thaw(evas_object_evas_get(obj));
evas_event_thaw_eval(evas_object_evas_get(obj));
}
@ -3100,6 +3103,26 @@ _item_mode_unset(Widget_Data *wd)
wd->mode_item = NULL;
}
static void
_item_auto_scroll(Widget_Data *wd)
{
if (!wd) return;
Elm_Genlist_Item *it;
Eina_List *l;
Evas_Coord ox, oy, ow, oh;
if ((wd->expanded_item) && (wd->auto_scroll_enabled))
{
evas_object_geometry_get(wd->obj, &ox, &oy, &ow, &oh);
if (wd->expanded_item->scrl_y > (oh + oy) / 2)
{
EINA_LIST_FOREACH(wd->expanded_item->items, l, it)
elm_genlist_item_bring_in(it);
}
wd->auto_scroll_enabled = EINA_FALSE;
}
}
/**
* Add a new Genlist object
*
@ -4312,17 +4335,20 @@ elm_genlist_item_expanded_set(Elm_Genlist_Item *it,
ELM_WIDGET_ITEM_WIDTYPE_CHECK_OR_RETURN(it);
if (it->expanded == expanded) return;
it->expanded = expanded;
it->wd->expanded_item = it;
if (it->expanded)
{
if (it->realized)
edje_object_signal_emit(it->base.view, "elm,state,expanded", "elm");
evas_object_smart_callback_call(it->base.widget, SIG_EXPANDED, it);
it->wd->auto_scroll_enabled = EINA_TRUE;
}
else
{
if (it->realized)
edje_object_signal_emit(it->base.view, "elm,state,contracted", "elm");
evas_object_smart_callback_call(it->base.widget, SIG_CONTRACTED, it);
it->wd->auto_scroll_enabled = EINA_FALSE;
}
}