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efl_ui_pager: implement rollover behavior 

this behavior is implemented in efl_pack, so this should be in this
implementation.

Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D8748
This commit is contained in:
Marcel Hollerbach 2019-04-26 18:52:29 +02:00
parent ea4b840539
commit 8049d8a255
1 changed files with 44 additions and 13 deletions
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57
src/lib/elementary/efl_ui_pager.c
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@ -11,6 +11,28 @@
#define MY_CLASS EFL_UI_PAGER_CLASS
static int
clamp_index(Efl_Ui_Pager_Data *pd, int index)
{
if (index < ((int)eina_list_count(pd->content_list)) * -1)
return -1;
else if (index > (int)eina_list_count(pd->content_list) - 1)
return 1;
return 0;
}
static int
index_rollover(Efl_Ui_Pager_Data *pd, int index)
{
int c = eina_list_count(pd->content_list);
if (index < c * -1)
return 0;
else if (index > c - 1)
return c - 1;
else if (index < 0)
return index + c;
return index;
}
static void
_efl_ui_pager_update(Efl_Ui_Pager_Data *pd)
@ -489,11 +511,7 @@ _efl_ui_pager_efl_pack_linear_pack_at(Eo *obj,
Efl_Gfx_Entity *subobj,
int index)
{
if ((index > pd->cnt) || (index < 0))
{
return EINA_FALSE;
}
else if (index == pd->cnt)
if (index == pd->cnt)
{
_efl_ui_pager_efl_pack_linear_pack_end(obj, pd, subobj);
}
@ -502,10 +520,25 @@ _efl_ui_pager_efl_pack_linear_pack_at(Eo *obj,
Efl_Gfx_Entity *existing = NULL;
if (!_register_child(obj, pd, subobj)) return EINA_FALSE;
existing = eina_list_nth(pd->content_list, index);
pd->content_list = eina_list_prepend_relative(
pd->content_list, subobj, existing);
_update_internals(obj, pd, subobj, index);
int clamp = clamp_index(pd, index);
int pass_index = -1;
if (clamp == 0)
{
existing = eina_list_nth(pd->content_list, index_rollover(pd, index));
pd->content_list = eina_list_prepend_relative(
pd->content_list, subobj, existing);
}
else if (clamp == 1)
{
pd->content_list = eina_list_append(pd->content_list, subobj);
pass_index = eina_list_count(pd->content_list);
}
else
{
pd->content_list = eina_list_prepend(pd->content_list, subobj);
pass_index = 0;
}
_update_internals(obj, pd, subobj, pass_index);
}
return EINA_TRUE;
@ -516,7 +549,7 @@ _efl_ui_pager_efl_pack_linear_pack_content_get(Eo *obj EINA_UNUSED,
Efl_Ui_Pager_Data *pd,
int index)
{
return eina_list_nth(pd->content_list, index);
return eina_list_nth(pd->content_list, index_rollover(pd, index));
}
EOLIAN static int
@ -885,9 +918,7 @@ _efl_ui_pager_efl_pack_linear_pack_unpack_at(Eo *obj,
Efl_Ui_Pager_Data *pd,
int index)
{
if ((index >= pd->cnt) || (index < 0)) return NULL;
Efl_Gfx_Entity *subobj = eina_list_nth(pd->content_list, index);
Efl_Gfx_Entity *subobj = eina_list_nth(pd->content_list, index_rollover(pd, index_rollover(pd, index)));
_unpack(obj, pd, subobj, index);