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 <string.h> 45 #include <sys/types.h> 46 #include "curses_inc.h" 47 48 /* Like refresh but does not output */ 49 50 int 51 wnoutrefresh(WINDOW *win) 52 { 53 short *bch, *ech, *sbch, *sech; 54 chtype **wcp, **scp, *wc, *sc; 55 int *hash; 56 short y, x, xorg, yorg, scrli, scrco, 57 boty, sminy, smaxy, minx, maxx, lo, hi; 58 bool doall; 59 60 if (win->_parent) 61 wsyncdown(win); 62 63 doall = win->_clear; 64 65 sminy = SP->Yabove; 66 smaxy = sminy + LINES; 67 scrli = curscr->_maxy; 68 scrco = curscr->_maxx; 69 70 yorg = win->_begy + win->_yoffset; 71 xorg = win->_begx; 72 73 /* save flags, cursor positions */ 74 SP->virt_scr->_leave = win->_leave; 75 if ((!win->_leave && (win->_flags & (_WINCHANGED | _WINMOVED))) && 76 ((y = win->_cury + yorg) >= 0) && (y < scrli) && 77 ((x = win->_curx + xorg) >= 0) && (x < scrco)) { 78 _virtscr->_cury = y; 79 _virtscr->_curx = x; 80 } 81 if (!(win->_use_idc)) 82 _virtscr->_use_idc = FALSE; 83 if (win->_use_idl) 84 _virtscr->_use_idl = TRUE; 85 if (win->_clear) { 86 _virtscr->_clear = TRUE; 87 win->_clear = FALSE; 88 win->_flags |= _WINCHANGED; 89 } 90 91 if (!(win->_flags & _WINCHANGED)) 92 goto done; 93 94 /* region to update */ 95 boty = win->_maxy+yorg; 96 if (yorg >= sminy && yorg < smaxy && boty >= smaxy) 97 boty = smaxy; 98 else 99 if (boty > scrli) 100 boty = scrli; 101 boty -= yorg; 102 103 minx = 0; 104 if ((maxx = win->_maxx+xorg) > scrco) 105 maxx = scrco; 106 maxx -= xorg + 1; 107 108 /* update structure */ 109 bch = win->_firstch; 110 ech = win->_lastch; 111 wcp = win->_y; 112 113 hash = _VIRTHASH + yorg; 114 sbch = _virtscr->_firstch + yorg; 115 sech = _virtscr->_lastch + yorg; 116 scp = _virtscr->_y + yorg; 117 118 /* first time around, set proper top/bottom changed lines */ 119 if (curscr->_sync) { 120 _VIRTTOP = scrli; 121 _VIRTBOT = -1; 122 } 123 124 /* update each line */ 125 for (y = 0; y < boty; ++y, ++hash, ++bch, ++ech, ++sbch, 126 ++sech, ++wcp, ++scp) { 127 if (!doall && *bch == _INFINITY) 128 continue; 129 130 lo = (doall || *bch == _REDRAW || *bch < minx) ? minx : *bch; 131 hi = (doall || *bch == _REDRAW || *ech > maxx) ? maxx : *ech; 132 133 wc = *wcp; 134 sc = *scp; 135 /* adjust lo and hi so they contain whole characters */ 136 if (_scrmax > 1) { 137 if (ISCBIT(wc[lo])) { 138 for (x = lo - 1; x >= minx; --x) 139 if (!ISCBIT(wc[x])) 140 break; 141 if (x < minx) { 142 for (x = lo+1; x <= maxx; ++x) 143 if (!ISCBIT(wc[x])) 144 break; 145 if (x > maxx) 146 goto nextline; 147 } 148 lo = x; 149 } 150 if (ISMBIT(wc[hi])) { 151 int w; 152 unsigned char rb; 153 for (x = hi; x >= lo; --x) 154 if (!ISCBIT(wc[x])) 155 break; 156 /* LINTED */ 157 rb = (unsigned char) RBYTE(wc[x]); 158 w = _curs_scrwidth[TYPE(rb)]; 159 hi = (x+w) <= maxx+1 ? x+w-1 : x; 160 } 161 } 162 163 if (hi < lo) 164 continue; 165 166 /* clear partial multi-chars about to be overwritten */ 167 if (_scrmax > 1) { 168 if (ISMBIT(sc[lo + xorg])) 169 (void) _mbclrch(_virtscr, y + yorg, lo + xorg); 170 if (ISMBIT(sc[hi + xorg])) 171 (void) _mbclrch(_virtscr, y + yorg, hi + xorg); 172 } 173 174 /* update the change structure */ 175 if (*bch == _REDRAW || *sbch == _REDRAW) 176 *sbch = _REDRAW; 177 else { 178 if (*sbch > lo+xorg) 179 *sbch = lo+xorg; 180 if (*sech < hi+xorg) 181 *sech = hi+xorg; 182 } 183 if ((y + yorg) < _VIRTTOP) 184 _VIRTTOP = y+yorg; 185 if ((y + yorg) > _VIRTBOT) 186 _VIRTBOT = y + yorg; 187 188 /* update the image */ 189 wc = *wcp + lo; 190 sc = *scp + lo + xorg; 191 (void) memcpy((char *) sc, (char *) wc, (size_t) 192 (((hi - lo) + 1) * sizeof (chtype))); 193 194 /* the hash value of the line */ 195 *hash = _NOHASH; 196 197 nextline: 198 *bch = _INFINITY; 199 *ech = -1; 200 } 201 202 done: 203 _virtscr->_flags |= _WINCHANGED; 204 win->_flags &= ~(_WINCHANGED | _WINMOVED | _WINSDEL); 205 return (OK); 206 } 207