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 /* 23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 /*LINTLIBRARY*/ 43 44 #include <sys/types.h> 45 #include "curses_inc.h" 46 47 /* Change the background of a window. nbkgd : new background. */ 48 49 int 50 wbkgd(WINDOW *win, chtype nbkgd) 51 { 52 short maxx; 53 int x, y; 54 chtype *wcp, obkgda, obkgdc, nbkgda, 55 nbkgdc, acolor, c; 56 short *begch, *endch; 57 58 /* if 'nbkgd' contains color information, but this is not a color */ 59 /* terminal, erase that information. */ 60 61 if ((nbkgd & A_COLOR) && (cur_term->_pairs_tbl == NULL)) 62 nbkgd &= ~A_COLOR; 63 64 if (nbkgd == win->_bkgd) 65 return (OK); 66 67 obkgdc = _CHAR(win->_bkgd); 68 obkgda = _ATTR(win->_bkgd); 69 70 nbkgdc = _CHAR(nbkgd); 71 nbkgda = _ATTR(nbkgd); 72 73 /* switch byte order if necessary */ 74 if (ISCBIT(nbkgdc)) 75 nbkgdc = _CHAR((RBYTE(nbkgdc) << 8) | (LBYTE(nbkgdc)|MBIT)) | 76 CBIT; 77 c = RBYTE(nbkgdc); 78 if ((nbkgdc < ' ' || nbkgdc == _CTRL('?')) || 79 _curs_scrwidth[TYPE(c)] > 1) 80 nbkgdc = obkgdc; 81 nbkgd = (nbkgdc & ~CBIT) | nbkgda; 82 83 win->_bkgd = nbkgd; 84 85 /* delete the old background from the attribute field and replace */ 86 /* it with the new background. Note: if the same attribute was */ 87 /* first set by wbkgd() and then by wattron(), or vice versa, it */ 88 /* will be deleted, so the effect of wattron() will be lost. */ 89 /* This applies to both video and color attributes. */ 90 91 if ((acolor = (win->_attrs & A_COLOR)) != 0) { 92 if (acolor == (obkgda & A_COLOR)) { 93 win->_attrs = _ATTR((win->_attrs & ~obkgda) | nbkgda); 94 } else { 95 win->_attrs = _ATTR((win->_attrs & 96 (~obkgda | A_COLOR)) | (nbkgda & ~A_COLOR)); 97 } 98 } else 99 win->_attrs = _ATTR((win->_attrs & ~obkgda) | nbkgda); 100 101 maxx = win->_maxx - 1; 102 begch = win->_firstch; 103 endch = win->_lastch; 104 for (y = win->_maxy-1; y >= 0; --y, ++begch, ++endch) { 105 for (x = maxx, wcp = win->_y[y]; x-- >= 0; ++wcp) { 106 if ((c = _CHAR(*wcp)) == obkgdc) 107 c = nbkgdc; 108 if ((acolor = (*wcp & A_COLOR)) != 0) { 109 if (acolor == (obkgda & A_COLOR)) 110 *wcp = c | _ATTR((*wcp & ~obkgda) | 111 nbkgda); 112 else 113 *wcp = c | _ATTR((*wcp & (~obkgda | 114 A_COLOR)) | (nbkgda & ~A_COLOR)); 115 } else 116 *wcp = c | _ATTR((*wcp & ~obkgda) | nbkgda); 117 } 118 *begch = 0; 119 *endch = maxx; 120 } 121 122 win->_flags |= _WINCHANGED; 123 if (win->_sync) 124 wsyncup(win); 125 126 return (win->_immed ? wrefresh(win) : OK); 127 } 128