menu_st *menu_handle_item(menu_st *menulist, int num)
{
item_st *item;
/* out of bounds */
if(num < 0 || num >= menulist->num_items) {
Dprintf("menu_handle_item::Invalid item");
return menulist;
}
item = &menulist->items[num];
menulist->lastsel = -1;
if(SUB_MENU_HEADER & item->op) {
/* Destroy timer */
menu_handle_timer(menulist, 1);
/* create another sub-menu */
menulist = menu_right_transition(menulist, item);
}
else if(ACTION_MENU & item->op) {
/* execute the function */
void (* fp)(void);
fp = item->action;
(* fp)();
menulist->lastsel = 0;
}
else if(BOOLEAN_MENU & item->op) {
/* toggle boolean; draw */
item->sel_option = !(item->sel_option);
if(item->setting != 0)
ipod_set_setting(item->setting, item->sel_option);
menu_retext_pixmap(menulist, num - menulist->top_item, item);
}
else if(OPTION_MENU & item->op) {
/* rotate option; draw */
item->sel_option = ((item->sel_option + 1) >
(item->item_count - 1) ? 0 :
item->sel_option + 1);
if(item->setting != 0)
ipod_set_setting(item->setting, item->sel_option);
menu_retext_pixmap(menulist, num - menulist->top_item, item);
}
else if(SETTING_ITEM & item->op) {
if(item->setting != 0)
ipod_set_setting(item->setting, item->item_count);
menulist = menu_destroy(menulist);
}
/* this isnt an else, so you can do (ACTION_MENU|SUB_MENU_PREV) */
if(SUB_MENU_PREV & item->op) {
menulist = menu_destroy(menulist);
}
return menulist;
}
static void menu_set_setting (ttk_menu_item *item, int cdata)
{
ipod_set_setting (cdata, item->choice);
}
void toggle_backlight(void)
{
ipod_set_setting(BACKLIGHT, !ipod_get_setting(BACKLIGHT));
}
