1/* $OpenBSD: p_below.c,v 1.6 2023/10/17 09:52:10 nicm Exp $ */
2
3/****************************************************************************
4 * Copyright 2020 Thomas E. Dickey                                          *
5 * Copyright 1998-2010,2012 Free Software Foundation, Inc.                  *
6 *                                                                          *
7 * Permission is hereby granted, free of charge, to any person obtaining a  *
8 * copy of this software and associated documentation files (the            *
9 * "Software"), to deal in the Software without restriction, including      *
10 * without limitation the rights to use, copy, modify, merge, publish,      *
11 * distribute, distribute with modifications, sublicense, and/or sell       *
12 * copies of the Software, and to permit persons to whom the Software is    *
13 * furnished to do so, subject to the following conditions:                 *
14 *                                                                          *
15 * The above copyright notice and this permission notice shall be included  *
16 * in all copies or substantial portions of the Software.                   *
17 *                                                                          *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
25 *                                                                          *
26 * Except as contained in this notice, the name(s) of the above copyright   *
27 * holders shall not be used in advertising or otherwise to promote the     *
28 * sale, use or other dealings in this Software without prior written       *
29 * authorization.                                                           *
30 ****************************************************************************/
31
32/****************************************************************************
33 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995                    *
34 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
35 *     and: Juergen Pfeifer                         1997-1999,2008          *
36 ****************************************************************************/
37
38/* p_below.c
39 */
40#include "panel.priv.h"
41
42MODULE_ID("$Id: p_below.c,v 1.6 2023/10/17 09:52:10 nicm Exp $")
43
44#if NCURSES_SP_FUNCS
45PANEL_EXPORT(PANEL *)
46ceiling_panel(SCREEN * sp)
47{
48  T((T_CALLED("ceiling_panel(%p)"), (void *)sp));
49  if (sp)
50    {
51      struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp);
52
53      /* if top and bottom are equal, we have no or only the pseudo panel */
54      returnPanel(EMPTY_STACK()? (PANEL *) 0 : _nc_top_panel);
55    }
56  else
57    {
58      if (0 == CURRENT_SCREEN)
59	returnPanel(0);
60      else
61	returnPanel(ceiling_panel(CURRENT_SCREEN));
62    }
63}
64#endif
65
66PANEL_EXPORT(PANEL *)
67panel_below(const PANEL * pan)
68{
69  PANEL *result;
70
71  T((T_CALLED("panel_below(%p)"), (const void *)pan));
72  if (pan)
73    {
74      GetHook(pan);
75      /* we must not return the pseudo panel */
76      result = Is_Pseudo(pan->below) ? (PANEL *) 0 : pan->below;
77    }
78  else
79    {
80#if NCURSES_SP_FUNCS
81      result = ceiling_panel(CURRENT_SCREEN);
82#else
83      /* if top and bottom are equal, we have no or only the pseudo panel */
84      result = EMPTY_STACK()? (PANEL *) 0 : _nc_top_panel;
85#endif
86    }
87  returnPanel(result);
88}
89