93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/* $NetBSD: panel_impl.h,v 1.3 2022/04/19 20:32:17 rillig Exp $ */
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/*
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* Copyright (c) 2015 Valery Ushakov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _PANEL_IMPL_H_
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#define _PANEL_IMPL_H_
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#include "panel.h"
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#include <sys/queue.h>
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#define DECK_HEAD(head) TAILQ_HEAD(head, __panel)
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#define DECK_ENTRY TAILQ_ENTRY(__panel)
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/*
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* Panels are just curses windows with Z-order added.
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* See update_panels() for details.
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*/
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struct __panel {
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WINDOW *win;
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char *user;
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DECK_ENTRY zorder;
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};
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/* Deck of panels in Z-order from bottom to top. */
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DECK_HEAD(deck);
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extern struct deck _deck __dso_hidden;
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/* Fake stdscr panel at the bottom, not user visible */
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extern PANEL _stdscr_panel __dso_hidden;
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/*
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* Hidden panels are not in the deck. <sys/queue.h> macros don't have
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* a concept of an entry not on the list, so provide a kludge that
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* digs into internals.
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*/
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#define TAILQ_REMOVE_NP(head, elm, field) do { \
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TAILQ_REMOVE((head), (elm), field); \
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(elm)->field.tqe_next = NULL; \
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(elm)->field.tqe_prev = NULL; \
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} while (0)
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#define TAILQ_LINKED_NP(elm, field) \
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(((elm)->field.tqe_prev) != NULL)
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#define DECK_INSERT_TOP(p) do { \
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TAILQ_INSERT_TAIL(&_deck, (p), zorder); \
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} while (0)
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#define DECK_INSERT_BOTTOM(p) do { \
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TAILQ_INSERT_AFTER(&_deck, &_stdscr_panel, (p), zorder); \
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} while (0)
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#define DECK_REMOVE(p) do { \
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TAILQ_REMOVE_NP(&_deck, (p), zorder); \
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} while (0)
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#define PANEL_ABOVE(p) (TAILQ_NEXT((p), zorder))
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#define PANEL_BELOW(p) (TAILQ_PREV((p), deck, zorder))
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#define PANEL_HIDDEN(p) (!TAILQ_LINKED_NP((p), zorder))
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#define FOREACH_PANEL(var) TAILQ_FOREACH(var, &_deck, zorder)
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#endif /* _PANEL_IMPL_H_ */
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