1/****************************************************************************
2 * Copyright 2020 Thomas E. Dickey                                          *
3 * Copyright 1998-2010,2012 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                         1997-1999,2008          *
34 ****************************************************************************/
35
36/* p_below.c
37 */
38#include "panel.priv.h"
39
40MODULE_ID("$Id: p_below.c,v 1.10 2020/02/02 23:34:34 tom Exp $")
41
42#if NCURSES_SP_FUNCS
43NCURSES_EXPORT(PANEL *)
44ceiling_panel(SCREEN * sp)
45{
46  T((T_CALLED("ceiling_panel(%p)"), (void *)sp));
47  if (sp)
48    {
49      struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp);
50
51      /* if top and bottom are equal, we have no or only the pseudo panel */
52      returnPanel(EMPTY_STACK()? (PANEL *) 0 : _nc_top_panel);
53    }
54  else
55    {
56      if (0 == CURRENT_SCREEN)
57	returnPanel(0);
58      else
59	returnPanel(ceiling_panel(CURRENT_SCREEN));
60    }
61}
62#endif
63
64NCURSES_EXPORT(PANEL *)
65panel_below(const PANEL * pan)
66{
67  PANEL *result;
68
69  T((T_CALLED("panel_below(%p)"), (const void *)pan));
70  if (pan)
71    {
72      GetHook(pan);
73      /* we must not return the pseudo panel */
74      result = Is_Pseudo(pan->below) ? (PANEL *) 0 : pan->below;
75    }
76  else
77    {
78#if NCURSES_SP_FUNCS
79      result = ceiling_panel(CURRENT_SCREEN);
80#else
81      /* if top and bottom are equal, we have no or only the pseudo panel */
82      result = EMPTY_STACK()? (PANEL *) 0 : _nc_top_panel;
83#endif
84    }
85  returnPanel(result);
86}
87