release/src/router/libncurses/menu/m_cursor.c

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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 /***************************************************************************
  34 * Module m_cursor                                                          *
  35 * Correctly position a menu's cursor                                       *
  36 ***************************************************************************/
  37
  38 #include "menu.priv.h"
  39
  40 MODULE_ID("$Id: m_cursor.c,v 1.22 2010/01/23 21:20:10 tom Exp $")
  41
  42 /*---------------------------------------------------------------------------
  43 |   Facility      :  libnmenu
  44 |   Function      :  _nc_menu_cursor_pos
  45 |
  46 |   Description   :  Return position of logical cursor to current item
  47 |
  48 |   Return Values :  E_OK            - success
  49 |                    E_BAD_ARGUMENT  - invalid menu
  50 |                    E_NOT_POSTED    - Menu is not posted
  51 +--------------------------------------------------------------------------*/
  52 NCURSES_EXPORT(int)
  53 _nc_menu_cursor_pos(const MENU * menu, const ITEM * item, int *pY, int *pX)
  54 {
  55   if (!menu || !pX || !pY)
  56     return (E_BAD_ARGUMENT);
  57   else
  58     {
  59       if ((ITEM *) 0 == item)
  60         item = menu->curitem;
  61       assert(item != (ITEM *) 0);
  62
  63       if (!(menu->status & _POSTED))
  64         return (E_NOT_POSTED);
  65
  66       *pX = item->x * (menu->spc_cols + menu->itemlen);
  67       *pY = (item->y - menu->toprow) * menu->spc_rows;
  68     }
  69   return (E_OK);
  70 }
  71
  72 /*---------------------------------------------------------------------------
  73 |   Facility      :  libnmenu
  74 |   Function      :  pos_menu_cursor
  75 |
  76 |   Description   :  Position logical cursor to current item in menu
  77 |
  78 |   Return Values :  E_OK            - success
  79 |                    E_BAD_ARGUMENT  - invalid menu
  80 |                    E_NOT_POSTED    - Menu is not posted
  81 +--------------------------------------------------------------------------*/
  82 NCURSES_EXPORT(int)
  83 pos_menu_cursor(const MENU * menu)
  84 {
  85   WINDOW *win, *sub;
  86   int x = 0, y = 0;
  87   int err = _nc_menu_cursor_pos(menu, (ITEM *) 0, &y, &x);
  88
  89   T((T_CALLED("pos_menu_cursor(%p)"), (const void *)menu));
  90
  91   if (E_OK == err)
  92     {
  93       win = Get_Menu_UserWin(menu);
  94       sub = menu->usersub ? menu->usersub : win;
  95       assert(win && sub);
  96
  97       if ((menu->opt & O_SHOWMATCH) && (menu->pindex > 0))
  98         x += (menu->pindex + menu->marklen - 1);
  99
 100       wmove(sub, y, x);
 101
 102       if (win != sub)
 103         {
 104           wcursyncup(sub);
 105           wsyncup(sub);
 106           untouchwin(sub);
 107         }
 108     }
 109   RETURN(err);
 110 }
 111
 112 /* m_cursor.c ends here */