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 (c) 1995-1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* LINTLIBRARY */ 30 31 /* 32 * copywin.c 33 * 34 * XCurses Library 35 * 36 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved. 37 * 38 */ 39 40 #ifdef M_RCSID 41 #ifndef lint 42 static char rcsID[] = 43 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/" 44 "libxcurses/src/libc/xcurses/rcs/copywin.c 1.6 1998/06/01 17:29:15 " 45 "cbates Exp $"; 46 #endif 47 #endif 48 49 #include <private.h> 50 51 #undef min 52 #define min(a, b) ((a) < (b) ? (a) : (b)) 53 54 /* 55 * Version of copywin used internally by Curses to compute 56 * the intersection of the two windows before calling copywin(). 57 */ 58 int 59 __m_copywin(const WINDOW *s, WINDOW *t, int transparent) 60 { 61 int code, sminr, sminc, tminr, tminc, tmaxr, tmaxc; 62 63 tmaxc = min(s->_begx + s->_maxx, t->_begx + t->_maxx) - 1 - t->_begx; 64 tmaxr = min(s->_begy + s->_maxy, t->_begy + t->_maxy) - 1 - t->_begy; 65 66 if (s->_begy < t->_begy) { 67 sminr = t->_begy - s->_begy; 68 tminr = 0; 69 } else { 70 sminr = 0; 71 tminr = s->_begy - t->_begy; 72 } 73 if (s->_begx < t->_begx) { 74 sminc = t->_begx - s->_begx; 75 tminc = 0; 76 } else { 77 sminc = 0; 78 tminc = s->_begx- t->_begx; 79 } 80 code = copywin(s, t, sminr, sminc, 81 tminr, tminc, tmaxr, tmaxc, transparent); 82 83 return (code); 84 } 85 86 /* 87 * Overlay specified part of source window over destination window 88 * NOTE copying is destructive only if transparent is set to false. 89 */ 90 int 91 copywin(const WINDOW *s, WINDOW *t, 92 int sminr, int sminc, int tminr, int tminc, 93 int tmaxr, int tmaxc, int transparent) 94 { 95 int tc; 96 cchar_t *st, *tt; 97 cchar_t bg = s->_bg; 98 99 for (; tminr <= tmaxr; ++tminr, ++sminr) { 100 st = s->_line[sminr] + sminc; 101 tt = t->_line[tminr] + tminc; 102 103 /* Copy source region to target. */ 104 for (tc = tminc; tc <= tmaxc; ++tc, ++tt, ++st) { 105 if (transparent) { 106 if (__m_cc_compare(st, &bg, 1)) 107 continue; 108 } 109 *tt = *st; 110 __m_touch_locs(t, tminr, tc, tc + 1); 111 } 112 #ifdef M_CURSES_SENSIBLE_WINDOWS 113 /* 114 * Case 4 - 115 * Expand incomplete glyph from source into target window. 116 */ 117 if (0 < tminc && !t->_line[tminr][tminc]._f) 118 (void) __m_cc_expand(t, tminr, tminc, -1); 119 if (tmaxc + 1 < t->_maxx && !__m_cc_islast(t, tminr, tmaxc)) 120 (void) __m_cc_expand(t, tminr, tmaxc, 1); 121 #endif /* M_CURSES_SENSIBLE_WINDOWS */ 122 } 123 124 return (OK); 125 } 126