p_below.c revision 262629 
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28
29/****************************************************************************
30 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995                    *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 *     and: Juergen Pfeifer                         1997-1999,2008          *
33 ****************************************************************************/
34
35/* p_below.c
36 */
37#include "panel.priv.h"
38
39MODULE_ID("$Id: p_below.c,v 1.8 2010/01/23 21:22:15 tom Exp $")
40
41#if NCURSES_SP_FUNCS
42NCURSES_EXPORT(PANEL *)
43ceiling_panel(SCREEN * sp)
44{
45  T((T_CALLED("ceiling_panel(%p)"), sp));
46  if (sp)
47    {
48      struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp);
49
50      /* if top and bottom are equal, we have no or only the pseudo panel */
51      returnPanel(EMPTY_STACK()? (PANEL *) 0 : _nc_top_panel);
52    }
53  else
54    {
55      if (0 == CURRENT_SCREEN)
56	returnPanel(0);
57      else
58	returnPanel(ceiling_panel(CURRENT_SCREEN));
59    }
60}
61#endif
62
63NCURSES_EXPORT(PANEL *)
64panel_below(const PANEL * pan)
65{
66  PANEL *result;
67
68  T((T_CALLED("panel_below(%p)"), (const void *)pan));
69  if (pan)
70    {
71      GetHook(pan);
72      /* we must not return the pseudo panel */
73      result = Is_Pseudo(pan->below) ? (PANEL *) 0 : pan->below;
74    }
75  else
76    {
77#if NCURSES_SP_FUNCS
78      result = ceiling_panel(CURRENT_SCREEN);
79#else
80      /* if top and bottom are equal, we have no or only the pseudo panel */
81      result = EMPTY_STACK()? (PANEL *) 0 : _nc_top_panel;
82#endif
83    }
84  returnPanel(result);
85}
86