source: trunk/ncurses/panel/p_new.c@ 3003

Last change on this file since 3003 was 2621, checked in by bird, 19 years ago

GNU ncurses 5.5
File size: 4.0 KB
Line 
1/****************************************************************************
2 * Copyright (c) 1998-2000,2005 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 *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
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. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29/****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
33
34/* p_new.c
35 * Creation of a new panel
36 */
37#include "panel.priv.h"
38
39MODULE_ID("$Id: p_new.c,v 1.8 2005/02/19 16:41:03 tom Exp $")
40
41#ifdef TRACE
42static char *stdscr_id;
43static char *new_id;
44#endif
45
46/*+-------------------------------------------------------------------------
47 Get root (i.e. stdscr's) panel.
48 Establish the pseudo panel for stdscr if necessary.
49--------------------------------------------------------------------------*/
50static PANEL *
51root_panel(void)
52{
53 if (_nc_stdscr_pseudo_panel == (PANEL *) 0)
54 {
55
56 assert(stdscr && !_nc_bottom_panel && !_nc_top_panel);
57 _nc_stdscr_pseudo_panel = (PANEL *) malloc(sizeof(PANEL));
58 if (_nc_stdscr_pseudo_panel != 0)
59 {
60 PANEL *pan = _nc_stdscr_pseudo_panel;
61 WINDOW *win = stdscr;
62
63 pan->win = win;
64 pan->below = (PANEL *) 0;
65 pan->above = (PANEL *) 0;
66#ifdef TRACE
67 if (!stdscr_id)
68 stdscr_id = strdup("stdscr");
69 pan->user = stdscr_id;
70#else
71 pan->user = (void *)0;
72#endif
73 _nc_bottom_panel = _nc_top_panel = pan;
74 }
75 }
76 return _nc_stdscr_pseudo_panel;
77}
78
79NCURSES_EXPORT(PANEL *)
80new_panel(WINDOW *win)
81{
82 PANEL *pan = (PANEL *) 0;
83
84 T((T_CALLED("new_panel(%p)"), win));
85
86 if (!win)
87 returnPanel(pan);
88
89 if (!_nc_stdscr_pseudo_panel)
90 (void)root_panel();
91 assert(_nc_stdscr_pseudo_panel);
92
93 if (!(win->_flags & _ISPAD) && (pan = (PANEL *) malloc(sizeof(PANEL))))
94 {
95 pan->win = win;
96 pan->above = (PANEL *) 0;
97 pan->below = (PANEL *) 0;
98#ifdef TRACE
99 if (!new_id)
100 new_id = strdup("new");
101 pan->user = new_id;
102#else
103 pan->user = (char *)0;
104#endif
105 (void)show_panel(pan);
106 }
107 returnPanel(pan);
108}
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