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 /*LINTLIBRARY*/ 41 42 #include <sys/types.h> 43 #include "curses_inc.h" 44 45 /* Change the background of a window. nbkgd : new background. */ 46 47 int 48 wbkgd(WINDOW *win, chtype nbkgd) 49 { 50 short maxx; 51 int x, y; 52 chtype *wcp, obkgda, obkgdc, nbkgda, 53 nbkgdc, acolor, c; 54 short *begch, *endch; 55 56 /* if 'nbkgd' contains color information, but this is not a color */ 57 /* terminal, erase that information. */ 58 59 if ((nbkgd & A_COLOR) && (cur_term->_pairs_tbl == NULL)) 60 nbkgd &= ~A_COLOR; 61 62 if (nbkgd == win->_bkgd) 63 return (OK); 64 65 obkgdc = _CHAR(win->_bkgd); 66 obkgda = _ATTR(win->_bkgd); 67 68 nbkgdc = _CHAR(nbkgd); 69 nbkgda = _ATTR(nbkgd); 70 71 /* switch byte order if necessary */ 72 if (ISCBIT(nbkgdc)) 73 nbkgdc = _CHAR((RBYTE(nbkgdc) << 8) | (LBYTE(nbkgdc)|MBIT)) | 74 CBIT; 75 c = RBYTE(nbkgdc); 76 if ((nbkgdc < ' ' || nbkgdc == _CTRL('?')) || 77 _curs_scrwidth[TYPE(c)] > 1) 78 nbkgdc = obkgdc; 79 nbkgd = (nbkgdc & ~CBIT) | nbkgda; 80 81 win->_bkgd = nbkgd; 82 83 /* delete the old background from the attribute field and replace */ 84 /* it with the new background. Note: if the same attribute was */ 85 /* first set by wbkgd() and then by wattron(), or vice versa, it */ 86 /* will be deleted, so the effect of wattron() will be lost. */ 87 /* This applies to both video and color attributes. */ 88 89 if ((acolor = (win->_attrs & A_COLOR)) != 0) { 90 if (acolor == (obkgda & A_COLOR)) { 91 win->_attrs = _ATTR((win->_attrs & ~obkgda) | nbkgda); 92 } else { 93 win->_attrs = _ATTR((win->_attrs & 94 (~obkgda | A_COLOR)) | (nbkgda & ~A_COLOR)); 95 } 96 } else 97 win->_attrs = _ATTR((win->_attrs & ~obkgda) | nbkgda); 98 99 maxx = win->_maxx - 1; 100 begch = win->_firstch; 101 endch = win->_lastch; 102 for (y = win->_maxy-1; y >= 0; --y, ++begch, ++endch) { 103 for (x = maxx, wcp = win->_y[y]; x-- >= 0; ++wcp) { 104 if ((c = _CHAR(*wcp)) == obkgdc) 105 c = nbkgdc; 106 if ((acolor = (*wcp & A_COLOR)) != 0) { 107 if (acolor == (obkgda & A_COLOR)) 108 *wcp = c | _ATTR((*wcp & ~obkgda) | 109 nbkgda); 110 else 111 *wcp = c | _ATTR((*wcp & (~obkgda | 112 A_COLOR)) | (nbkgda & ~A_COLOR)); 113 } else 114 *wcp = c | _ATTR((*wcp & ~obkgda) | nbkgda); 115 } 116 *begch = 0; 117 *endch = maxx; 118 } 119 120 win->_flags |= _WINCHANGED; 121 if (win->_sync) 122 wsyncup(win); 123 124 return (win->_immed ? wrefresh(win) : OK); 125 } 126