1 /* $NetBSD: panel_impl.h,v 1.2 2015/11/02 01:06:15 kamil Exp $ */ 2 3 /* 4 * Copyright (c) 2015 Valery Ushakov 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef _PANEL_IMPL_H_ 29 #define _PANEL_IMPL_H_ 30 31 #include "panel.h" 32 33 #include <sys/queue.h> 34 35 #define DECK_HEAD(head) TAILQ_HEAD(head, __panel) 36 #define DECK_ENTRY TAILQ_ENTRY(__panel) 37 38 39 /* 40 * Panels are just curses windows with Z-order added. 41 * See update_panels() for details. 42 */ 43 struct __panel { 44 WINDOW *win; 45 char *user; 46 DECK_ENTRY zorder; 47 }; 48 49 50 /* Deck of panels in Z-order from bottom to top. */ 51 DECK_HEAD(deck); 52 extern struct deck _deck __dso_hidden; 53 54 /* Fake stdscr panel at the bottom, not user visible */ 55 extern PANEL _stdscr_panel __dso_hidden; 56 57 58 /* 59 * Hidden panels are not in the deck. <sys/queue.h> macros don't have 60 * a concept of an entry not on the list, so provide a kludge that 61 * digs into internals. 62 */ 63 #define TAILQ_REMOVE_NP(head, elm, field) do { \ 64 TAILQ_REMOVE((head), (elm), field); \ 65 (elm)->field.tqe_next = NULL; \ 66 (elm)->field.tqe_prev = NULL; \ 67 } while (/*CONSTCOND*/ 0) 68 69 #define TAILQ_LINKED_NP(elm, field) \ 70 (((elm)->field.tqe_prev) != NULL) 71 72 73 #define DECK_INSERT_TOP(p) do { \ 74 TAILQ_INSERT_TAIL(&_deck, (p), zorder); \ 75 } while (/*CONSTCOND*/ 0) 76 77 #define DECK_INSERT_BOTTOM(p) do { \ 78 TAILQ_INSERT_AFTER(&_deck, &_stdscr_panel, (p), zorder); \ 79 } while (/*CONSTCOND*/ 0) 80 81 #define DECK_REMOVE(p) do { \ 82 TAILQ_REMOVE_NP(&_deck, (p), zorder); \ 83 } while (/*CONSTCOND*/ 0) 84 85 86 #define PANEL_ABOVE(p) (TAILQ_NEXT((p), zorder)) 87 #define PANEL_BELOW(p) (TAILQ_PREV((p), deck, zorder)) 88 #define PANEL_HIDDEN(p) (!TAILQ_LINKED_NP((p), zorder)) 89 90 #define FOREACH_PANEL(var) TAILQ_FOREACH(var, &_deck, zorder) 91 92 #endif /* _PANEL_IMPL_H_ */ 93