m_cursor.c revision 50276 
1/****************************************************************************
2 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
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9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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24 * holders shall not be used in advertising or otherwise to promote the     *
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26 * authorization.                                                           *
27 ****************************************************************************/
28
29/****************************************************************************
30 *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
31 ****************************************************************************/
32
33/***************************************************************************
34* Module m_cursor                                                          *
35* Correctly position a menus cursor                                        *
36***************************************************************************/
37
38#include "menu.priv.h"
39
40MODULE_ID("$Id: m_cursor.c,v 1.13 1999/05/16 17:24:43 juergen 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+--------------------------------------------------------------------------*/
52int _nc_menu_cursor_pos(const MENU* menu,
53			const ITEM* item,
54			int* pY, int* pX)
55{
56  if (!menu || !pX || !pY)
57    return(E_BAD_ARGUMENT);
58  else
59    {
60      if ((ITEM*)0 == item)
61	item = menu->curitem;
62      assert(item!=(ITEM*)0);
63
64      if ( !( menu->status & _POSTED ) )
65	return(E_NOT_POSTED);
66
67      *pX = item->x * (menu->spc_cols + menu->itemlen);
68      *pY = (item->y - menu->toprow) * menu->spc_rows;
69    }
70  return(E_OK);
71}
72
73/*---------------------------------------------------------------------------
74|   Facility      :  libnmenu
75|   Function      :  pos_menu_cursor
76|
77|   Description   :  Position logical cursor to current item in menu
78|
79|   Return Values :  E_OK            - success
80|                    E_BAD_ARGUMENT  - invalid menu
81|                    E_NOT_POSTED    - Menu is not posted
82+--------------------------------------------------------------------------*/
83int pos_menu_cursor(const MENU * menu)
84{
85  WINDOW *win, *sub;
86  int x, y;
87  int err = _nc_menu_cursor_pos(menu,(ITEM*)0,&y,&x);
88
89  if (E_OK==err)
90    {
91      win = menu->userwin ? menu->userwin : stdscr;
92      sub = menu->usersub ? menu->usersub : win;
93      assert(win && sub);
94
95      if ((menu->opt & O_SHOWMATCH) && (menu->pindex > 0))
96	x += ( menu->pindex + menu->marklen - 1);
97
98      wmove(sub,y,x);
99
100      if ( win != sub )
101	{
102	  wcursyncup(sub);
103	  wsyncup(sub);
104	  untouchwin(sub);
105	}
106    }
107  RETURN(err);
108}
109
110/* m_cursor.c ends here */
111