C++ (Cpp) menu_driver_navigation_set Examples

Example #1

File: menu_cbs_right.c Project: meepingsnesroms/RetroArch

static int action_right_scroll(unsigned type, const char *label,
      bool wraparound)
{
   size_t scroll_accel   = 0;
   unsigned scroll_speed = 0, fast_scroll_speed = 0;
   size_t selection      = menu_navigation_get_selection();

   if (!menu_driver_ctl(MENU_NAVIGATION_CTL_GET_SCROLL_ACCEL, &scroll_accel))
      return false;

   scroll_speed      = (unsigned)((MAX(scroll_accel, 2) - 2) / 4 + 1);
   fast_scroll_speed = 4 + 4 * scroll_speed;

   if (selection  + fast_scroll_speed < (menu_entries_get_size()))
   {
      size_t idx  = selection + fast_scroll_speed;

      menu_navigation_set_selection(idx);
      menu_driver_navigation_set(true);
   }
   else
   {
      if ((menu_entries_get_size() > 0))
         menu_driver_ctl(MENU_NAVIGATION_CTL_SET_LAST, NULL);
   }

   return 0;
}

Example #2

File: menu_cbs_left.c Project: gouchi/RetroArch

static int action_left_scroll(unsigned type, const char *label,
      bool wraparound)
{
   size_t scroll_accel   = 0;
   unsigned scroll_speed = 0, fast_scroll_speed = 0;
   size_t selection      = menu_navigation_get_selection();

   if (!menu_driver_ctl(MENU_NAVIGATION_CTL_GET_SCROLL_ACCEL, &scroll_accel))
      return false;

   scroll_speed          = (unsigned)((MAX(scroll_accel, 2) - 2) / 4 + 1);
   fast_scroll_speed     = 4 + 4 * scroll_speed;

   if (selection > fast_scroll_speed)
   {
      size_t idx  = selection - fast_scroll_speed;
      menu_navigation_set_selection(idx);
      menu_driver_navigation_set(true);
   }
   else
   {
      bool pending_push = false;
      menu_driver_ctl(MENU_NAVIGATION_CTL_CLEAR, &pending_push);
   }

   return 0;
}

Example #3

File: menu_navigation.c Project: brianblakely/RetroArch

/**
 * menu_navigation_set:      
 * @idx                   : index to set navigation pointer to.
 * @scroll                : should we scroll when needed?
 *
 * Sets navigation pointer to index @idx.
 **/
void menu_navigation_set(menu_navigation_t *nav,
      size_t idx, bool scroll)
{
   if (!nav)
      return;

   nav->selection_ptr = idx; 

   menu_driver_navigation_set(scroll);
}

Example #4

File: menu_input_dialog.c Project: arakerlu/RetroArch

static void menu_input_search_cb(void *userdata, const char *str)
{
   size_t idx = 0;
   file_list_t *selection_buf = menu_entries_get_selection_buf_ptr(0);

   if (!selection_buf)
      return;

   if (str && *str && file_list_search(selection_buf, str, &idx))
   {
      menu_navigation_set_selection(idx);
      menu_driver_navigation_set(true);
   }

   menu_input_dialog_end();
}

Example #5

File: menu_entries.c Project: gouchi/RetroArch

/**
 * Before a refresh, we could have deleted a
 * file on disk, causing selection_ptr to
 * suddendly be out of range.
 *
 * Ensure it doesn't overflow.
 **/
static bool menu_entries_refresh(void *data)
{
   size_t list_size;
   file_list_t *list = (file_list_t*)data;
   size_t selection  = menu_navigation_get_selection();

   menu_entries_build_scroll_indices(list);

   list_size = menu_entries_get_size();

   if ((selection >= list_size) && list_size)
   {
      size_t idx  = list_size - 1;
      menu_navigation_set_selection(idx);
      menu_driver_navigation_set(true);
   }
   else if (!list_size)
   {
      bool pending_push = true;
      menu_driver_ctl(MENU_NAVIGATION_CTL_CLEAR, &pending_push);
   }

   return true;
}