1 /****************************************************************************
2 * Copyright (c) 1998-2005,2008 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 * and: Juergen Pfeifer 1997-1999 *
33 * and: Thomas E. Dickey 2000-on *
34 ****************************************************************************/
35
36 /* p_new.c
37 * Creation of a new panel
38 */
39 #include "panel.priv.h"
40
41 MODULE_ID("$Id: p_new.c,v 1.10 2008/08/04 18:25:48 tom Exp $")
42
43 #ifdef TRACE
44 static char *stdscr_id;
45 static char *new_id;
46 #endif
47
48 /*+-------------------------------------------------------------------------
49 Get root (i.e. stdscr's) panel.
50 Establish the pseudo panel for stdscr if necessary.
51 --------------------------------------------------------------------------*/
52 static PANEL *
root_panel(void)53 root_panel(void)
54 {
55 if (_nc_stdscr_pseudo_panel == (PANEL *) 0)
56 {
57
58 assert(stdscr && !_nc_bottom_panel && !_nc_top_panel);
59 #if NO_LEAKS
60 _nc_panelhook()->destroy = del_panel;
61 #endif
62 _nc_stdscr_pseudo_panel = (PANEL *) malloc(sizeof(PANEL));
63 if (_nc_stdscr_pseudo_panel != 0)
64 {
65 PANEL *pan = _nc_stdscr_pseudo_panel;
66 WINDOW *win = stdscr;
67
68 pan->win = win;
69 pan->below = (PANEL *) 0;
70 pan->above = (PANEL *) 0;
71 #ifdef TRACE
72 if (!stdscr_id)
73 stdscr_id = strdup("stdscr");
74 pan->user = stdscr_id;
75 #else
76 pan->user = (void *)0;
77 #endif
78 _nc_bottom_panel = _nc_top_panel = pan;
79 }
80 }
81 return _nc_stdscr_pseudo_panel;
82 }
83
84 NCURSES_EXPORT(PANEL *)
new_panel(WINDOW * win)85 new_panel(WINDOW *win)
86 {
87 PANEL *pan = (PANEL *) 0;
88
89 T((T_CALLED("new_panel(%p)"), win));
90
91 if (!win)
92 returnPanel(pan);
93
94 if (!_nc_stdscr_pseudo_panel)
95 (void)root_panel();
96 assert(_nc_stdscr_pseudo_panel);
97
98 if (!(win->_flags & _ISPAD) && (pan = (PANEL *) malloc(sizeof(PANEL))))
99 {
100 pan->win = win;
101 pan->above = (PANEL *) 0;
102 pan->below = (PANEL *) 0;
103 #ifdef TRACE
104 if (!new_id)
105 new_id = strdup("new");
106 pan->user = new_id;
107 #else
108 pan->user = (char *)0;
109 #endif
110 (void)show_panel(pan);
111 }
112 returnPanel(pan);
113 }
114