1 /****************************************************************************
2 * Copyright 2020,2021 Thomas E. Dickey *
3 * Copyright 1998-2009,2010 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
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28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Juergen Pfeifer, 1995,1997 *
32 ****************************************************************************/
33
34 /***************************************************************************
35 * Module m_cursor *
36 * Correctly position a menu's cursor *
37 ***************************************************************************/
38
39 #include "menu.priv.h"
40
41 MODULE_ID("$Id: m_cursor.c,v 1.26 2021/03/27 23:46:29 tom Exp $")
42
43 /*---------------------------------------------------------------------------
44 | Facility : libnmenu
45 | Function : _nc_menu_cursor_pos
46 |
47 | Description : Return position of logical cursor to current item
48 |
49 | Return Values : E_OK - success
50 | E_BAD_ARGUMENT - invalid menu
51 | E_NOT_POSTED - Menu is not posted
52 +--------------------------------------------------------------------------*/
MENU_EXPORT(int)53 MENU_EXPORT(int)
54 _nc_menu_cursor_pos(const MENU *menu, const ITEM *item, 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 +--------------------------------------------------------------------------*/
83 MENU_EXPORT(int)
pos_menu_cursor(const MENU * menu)84 pos_menu_cursor(const MENU *menu)
85 {
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 WINDOW *win = Get_Menu_UserWin(menu);
94 WINDOW *sub = menu->usersub ? menu->usersub : win;
95
96 assert(win && sub);
97
98 if ((menu->opt & O_SHOWMATCH) && (menu->pindex > 0))
99 x += (menu->pindex + menu->marklen - 1);
100
101 wmove(sub, y, x);
102
103 if (win != sub)
104 {
105 wcursyncup(sub);
106 wsyncup(sub);
107 untouchwin(sub);
108 }
109 }
110 RETURN(err);
111 }
112
113 /* m_cursor.c ends here */
114