xref: /freebsd/contrib/ncurses/panel/p_bottom.c (revision ce6a89e27cd190313be39bb479880aeda4778436)
1 /****************************************************************************
2  * Copyright 2020 Thomas E. Dickey                                          *
3  * Copyright 1998-2008,2010 Free Software Foundation, Inc.                  *
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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_bottom.c
37  * Place a panel on bottom of the stack; may already be in the stack
38  */
39 #include "panel.priv.h"
40 
41 MODULE_ID("$Id: p_bottom.c,v 1.14 2020/02/02 23:34:34 tom Exp $")
42 
43 NCURSES_EXPORT(int)
44 bottom_panel(PANEL * pan)
45 {
46   int err = OK;
47 
48   T((T_CALLED("bottom_panel(%p)"), (void *)pan));
49   if (pan)
50     {
51       GetHook(pan);
52       if (!Is_Bottom(pan))
53 	{
54 
55 	  dBug(("--> bottom_panel %s", USER_PTR(pan->user)));
56 
57 	  HIDE_PANEL(pan, err, OK);
58 	  assert(_nc_bottom_panel == _nc_stdscr_pseudo_panel);
59 
60 	  dStack("<lb%d>", 1, pan);
61 
62 	  pan->below = _nc_bottom_panel;
63 	  pan->above = _nc_bottom_panel->above;
64 	  if (pan->above)
65 	    pan->above->below = pan;
66 	  _nc_bottom_panel->above = pan;
67 
68 	  dStack("<lb%d>", 9, pan);
69 	}
70     }
71   else
72     err = ERR;
73 
74   returnCode(err);
75 }
76