selectable_list.h File Reference

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Data Structures
struct	ui_selectable_list_t
	ui selectable list keeps the values that move through the subsystem: selected, first_visible. Some members are pointers into caller- or subsystem-owned memory, so lifetime follows the API that populated them rather than the struct copy itself. More...

Functions
void	ui_selectable_list_reset (ui_selectable_list_t *list)
void	ui_selectable_list_move (ui_selectable_list_t *list, int count, int rows, int delta)
void	ui_selectable_list_keep_visible (ui_selectable_list_t *list, int count, int rows)

Function Documentation

ui_selectable_list_keep_visible()

void ui_selectable_list_keep_visible	(	ui_selectable_list_t *	list,
		int	count,
		int	rows )

Definition at line 9 of file selectable_list.c.

                                                                                      {
  if (!list)
    return;
  ui_viewport_t viewport = {.selected = list->selected > 0 ? (size_t)list->selected : 0,
                            .first_visible = list->first_visible > 0 ? (size_t)list->first_visible : 0};
  ui_viewport_update(&viewport, count > 0 ? (size_t)count : 0, rows > 0 ? (size_t)rows : 1);
  list->selected = (int)viewport.selected;
  list->first_visible = (int)viewport.first_visible;
}

References ui_selectable_list_t::first_visible, ui_viewport_t::first_visible, ui_selectable_list_t::selected, ui_viewport_t::selected, and ui_viewport_update().

Referenced by ui_selectable_list_move().

ui_selectable_list_move()

void ui_selectable_list_move	(	ui_selectable_list_t *	list,
		int	count,
		int	rows,
		int	delta )

Definition at line 19 of file selectable_list.c.

                                                                                         {
  if (!list || count <= 0)
    return;
  list->selected += delta;
  ui_selectable_list_keep_visible(list, count, rows);
}

References ui_selectable_list_t::selected, and ui_selectable_list_keep_visible().

Referenced by ui_errno_stacks_handle_key().

ui_selectable_list_reset()

void ui_selectable_list_reset

(

ui_selectable_list_t *

list

)

Definition at line 4 of file selectable_list.c.

                                                          {
  if (list)
    *list = (ui_selectable_list_t){0};
}

Referenced by ui_errno_stacks_handle_key(), and ui_errno_stacks_toggle().