xref: /freebsd/contrib/ncurses/panel/p_show.c (revision a7623790fb345e6dc986dfd31df0ace115e6f2e4)
1 /****************************************************************************
2  * Copyright 2020 Thomas E. Dickey                                          *
3  * Copyright 1998-2009,2010 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  ****************************************************************************/
34 
35 /* p_show.c
36  * Place a panel on top of the stack; may already be in the stack
37  */
38 #include "panel.priv.h"
39 
40 MODULE_ID("$Id: p_show.c,v 1.14 2020/02/02 23:34:34 tom Exp $")
41 
42 NCURSES_EXPORT(int)
43 show_panel(PANEL * pan)
44 {
45   int err = ERR;
46 
47   T((T_CALLED("show_panel(%p)"), (void *)pan));
48 
49   if (pan)
50     {
51       GetHook(pan);
52 
53       if (Is_Top(pan))
54 	returnCode(OK);
55 
56       dBug(("--> show_panel %s", USER_PTR(pan->user)));
57 
58       HIDE_PANEL(pan, err, OK);
59 
60       dStack("<lt%d>", 1, pan);
61       assert(_nc_bottom_panel == _nc_stdscr_pseudo_panel);
62 
63       _nc_top_panel->above = pan;
64       pan->below = _nc_top_panel;
65       pan->above = (PANEL *) 0;
66       _nc_top_panel = pan;
67 
68       err = OK;
69 
70       dStack("<lt%d>", 9, pan);
71     }
72   returnCode(err);
73 }
74