usr/src/lib/libeti/panel/common/new.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1988 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  *      Copyright (c) 1997, by Sun Microsystems, Inc.
  28  *      All rights reserved.
  29  */
  30
  31 /* A panels subsystem built on curses--create a new panel */
  32
  33 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.3   */
  34
  35 /*LINTLIBRARY*/
  36
  37 #include <sys/types.h>
  38 #include <stdlib.h>
  39 #include <curses.h>
  40 #include "private.h"
  41
  42 /* add_top - Put a new or hidden panel on top of the pile */
  43 static void
  44 add_top(PANEL *panel)
  45 {
  46         if (!_Top_panel) {
  47                 panel-> below = 0;
  48                 _Bottom_panel = panel;
  49         } else {
  50                 _Top_panel -> above = panel;
  51                 panel -> below = _Top_panel;
  52         }
  53
  54         _Top_panel = panel;
  55         panel -> above = 0;
  56         panel -> obscured = 0;
  57         _Panel_cnt++;
  58
  59         /* Determine which panels the new panel obscures */
  60
  61         _intersect_panel(panel);
  62 }
  63
  64 /*  new_panel    */
  65 PANEL *
  66 new_panel(WINDOW *window)
  67 {
  68         PANEL   *panel;
  69         int     lines, cols;
  70
  71         /* create a panel */
  72
  73         if (!window || !_alloc_overlap(_Panel_cnt) ||
  74             !(panel = (PANEL *) malloc(sizeof (PANEL))))
  75                 return ((PANEL *) 0);
  76
  77         panel -> win = window;
  78         getbegyx(window, panel -> wstarty, panel -> wstartx);
  79         getmaxyx(window, lines, cols);
  80         panel -> wendy = panel->wstarty + lines - 1;
  81         panel -> wendx = panel->wstartx + cols - 1;
  82         panel -> user = 0;
  83
  84         /* put the new panel on top of the pile */
  85
  86         add_top(panel);
  87         return (panel);
  88 }
  89
  90 /*  show_panel    */
  91 int
  92 show_panel(PANEL *panel)
  93 {
  94         /* Allocate the obscured nodes for the new panel */
  95
  96         if (!panel || panel != panel -> below || !_alloc_overlap(_Panel_cnt))
  97                 return (ERR);
  98
  99         /* put the new panel on top of the pile */
 100
 101         add_top(panel);
 102         (void) touchwin(panel -> win);
 103         return (OK);
 104 }