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Refactor zarch_zui_gamepad_input - introduce cutoff point

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This commit is contained in:
twinaphex 2016-02-28 17:20:14 +01:00
parent 49d751e6c3
commit 6726b64d0d
1 changed files with 18 additions and 10 deletions
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28
menu/drivers/zarch.c
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@ -610,9 +610,10 @@ static void zarch_zui_render_lay_settings(zui_t *zui)
zarch_layout = LAY_HOME;
}
static bool zarch_zui_gamepad_input(zui_t *zui, int *gamepad_index)
static bool zarch_zui_gamepad_input(zui_t *zui, int *gamepad_index, int *list_first)
{
unsigned size = menu_entries_get_size();
unsigned size = menu_entries_get_size();
unsigned cutoff_point = size - 5;
switch (zui->action)
{
@ -633,12 +634,16 @@ static bool zarch_zui_gamepad_input(zui_t *zui, int *gamepad_index)
if (*gamepad_index > (size-1))
*gamepad_index = (size -1);
return true;
case MENU_ACTION_UP:
*gamepad_index = *gamepad_index - 1;
if (*gamepad_index < 0) /* and wraparound enabled */
*gamepad_index = size -1;
else if (*gamepad_index >= cutoff_point) /* if greater than cutoff point,
don't scroll */
return false;
return true;
case MENU_ACTION_DOWN:
@ -646,17 +651,19 @@ static bool zarch_zui_gamepad_input(zui_t *zui, int *gamepad_index)
if (*gamepad_index > (size - 1)) /* and wraparound enabled */
*gamepad_index = 0;
else if (*gamepad_index >= cutoff_point) /* if greater than cutoff point,
don't scroll */
return false;
return true;
default:
{
unsigned end = size - 5;
zui->recent_dlist_first += zui->mouse.wheel;
if (zui->recent_dlist_first < 0)
zui->recent_dlist_first = 0;
if (zui->recent_dlist_first > (int)end)
zui->recent_dlist_first = end;
*list_first += zui->mouse.wheel;
if (*list_first < 0)
*list_first = 0;
if (*list_first > (int)cutoff_point)
*list_first = cutoff_point;
zui->recent_dlist_first = min(max(zui->recent_dlist_first, 0), end);
*list_first = min(max(*list_first, 0), cutoff_point);
}
return false;
}
@ -672,7 +679,8 @@ static int zarch_zui_render_lay_root_recent(zui_t *zui, zui_tabbed_t *tabbed)
unsigned size = menu_entries_get_size();
unsigned i, j = 0;
if (zarch_zui_gamepad_input(zui, &gamepad_index))
if (zarch_zui_gamepad_input(zui, &gamepad_index,
&zui->recent_dlist_first))
zui->recent_dlist_first = gamepad_index;
for (i = zui->recent_dlist_first; i < size; ++i)