1 /****************************************************************************
2 * Copyright 2020 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 *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
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 *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Juergen Pfeifer 1997-1999 *
34 * and: Thomas E. Dickey 2000-on *
35 ****************************************************************************/
36
37 /* p_new.c
38 * Creation of a new panel
39 */
40 #include "panel.priv.h"
41
42 MODULE_ID("$Id: p_new.c,v 1.17 2020/02/02 23:34:34 tom Exp $")
43
44 #ifdef TRACE
45 static char *stdscr_id;
46 static char *new_id;
47 #endif
48
49 /*+-------------------------------------------------------------------------
50 Get root (i.e. stdscr's) panel.
51 Establish the pseudo panel for stdscr if necessary.
52 --------------------------------------------------------------------------*/
53 static PANEL *
root_panel(NCURSES_SP_DCL0)54 root_panel(NCURSES_SP_DCL0)
55 {
56 #if NCURSES_SP_FUNCS
57 struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp);
58
59 #elif NO_LEAKS
60 struct panelhook *ph = _nc_panelhook();
61 #endif
62
63 if (_nc_stdscr_pseudo_panel == (PANEL *) 0)
64 {
65
66 assert(SP_PARM && SP_PARM->_stdscr && !_nc_bottom_panel && !_nc_top_panel);
67 #if NO_LEAKS
68 ph->destroy = del_panel;
69 #endif
70 _nc_stdscr_pseudo_panel = typeMalloc(PANEL, 1);
71 if (_nc_stdscr_pseudo_panel != 0)
72 {
73 PANEL *pan = _nc_stdscr_pseudo_panel;
74 WINDOW *win = SP_PARM->_stdscr;
75
76 pan->win = win;
77 pan->below = (PANEL *) 0;
78 pan->above = (PANEL *) 0;
79 #ifdef TRACE
80 if (!stdscr_id)
81 stdscr_id = strdup("stdscr");
82 pan->user = stdscr_id;
83 #else
84 pan->user = (void *)0;
85 #endif
86 _nc_bottom_panel = _nc_top_panel = pan;
87 }
88 }
89 return _nc_stdscr_pseudo_panel;
90 }
91
92 NCURSES_EXPORT(PANEL *)
new_panel(WINDOW * win)93 new_panel(WINDOW *win)
94 {
95 PANEL *pan = (PANEL *) 0;
96
97 GetWindowHook(win);
98
99 T((T_CALLED("new_panel(%p)"), (void *)win));
100
101 if (!win)
102 returnPanel(pan);
103
104 if (!_nc_stdscr_pseudo_panel)
105 (void)root_panel(NCURSES_SP_ARG);
106 assert(_nc_stdscr_pseudo_panel);
107
108 if (!(win->_flags & _ISPAD) && (pan = typeMalloc(PANEL, 1)))
109 {
110 pan->win = win;
111 pan->above = (PANEL *) 0;
112 pan->below = (PANEL *) 0;
113 #ifdef TRACE
114 if (!new_id)
115 new_id = strdup("new");
116 pan->user = new_id;
117 #else
118 pan->user = (char *)0;
119 #endif
120 (void)show_panel(pan);
121 }
122 returnPanel(pan);
123 }
124