186d7f5d3SJohn Marino /* @(#)wwredrawwin.c 8.1 (Berkeley) 6/6/93 */
286d7f5d3SJohn Marino /* $NetBSD: wwredrawwin.c,v 1.7 2003/08/07 11:17:44 agc Exp $ */
386d7f5d3SJohn Marino
486d7f5d3SJohn Marino /*
586d7f5d3SJohn Marino * Copyright (c) 1983, 1993
686d7f5d3SJohn Marino * The Regents of the University of California. All rights reserved.
786d7f5d3SJohn Marino *
886d7f5d3SJohn Marino * This code is derived from software contributed to Berkeley by
986d7f5d3SJohn Marino * Edward Wang at The University of California, Berkeley.
1086d7f5d3SJohn Marino *
1186d7f5d3SJohn Marino * Redistribution and use in source and binary forms, with or without
1286d7f5d3SJohn Marino * modification, are permitted provided that the following conditions
1386d7f5d3SJohn Marino * are met:
1486d7f5d3SJohn Marino * 1. Redistributions of source code must retain the above copyright
1586d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer.
1686d7f5d3SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright
1786d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer in the
1886d7f5d3SJohn Marino * documentation and/or other materials provided with the distribution.
1986d7f5d3SJohn Marino * 3. Neither the name of the University nor the names of its contributors
2086d7f5d3SJohn Marino * may be used to endorse or promote products derived from this software
2186d7f5d3SJohn Marino * without specific prior written permission.
2286d7f5d3SJohn Marino *
2386d7f5d3SJohn Marino * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2486d7f5d3SJohn Marino * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2586d7f5d3SJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2686d7f5d3SJohn Marino * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2786d7f5d3SJohn Marino * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2886d7f5d3SJohn Marino * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2986d7f5d3SJohn Marino * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
3086d7f5d3SJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
3186d7f5d3SJohn Marino * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3286d7f5d3SJohn Marino * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3386d7f5d3SJohn Marino * SUCH DAMAGE.
3486d7f5d3SJohn Marino */
3586d7f5d3SJohn Marino
3686d7f5d3SJohn Marino #include "ww.h"
3786d7f5d3SJohn Marino
3886d7f5d3SJohn Marino void
wwredrawwin1(struct ww * w,int row1,int row2,int offset)3986d7f5d3SJohn Marino wwredrawwin1(struct ww *w, int row1, int row2, int offset)
4086d7f5d3SJohn Marino {
4186d7f5d3SJohn Marino int row;
4286d7f5d3SJohn Marino int col;
4386d7f5d3SJohn Marino unsigned char *smap;
4486d7f5d3SJohn Marino union ww_char *buf;
4586d7f5d3SJohn Marino char *win;
4686d7f5d3SJohn Marino union ww_char *ns;
4786d7f5d3SJohn Marino int x;
4886d7f5d3SJohn Marino int nchanged;
4986d7f5d3SJohn Marino
5086d7f5d3SJohn Marino for (row = row1; row < row2; row++) {
5186d7f5d3SJohn Marino col = w->ww_i.l;
5286d7f5d3SJohn Marino ns = wwns[row];
5386d7f5d3SJohn Marino smap = &wwsmap[row][col];
5486d7f5d3SJohn Marino buf = w->ww_buf[row + offset];
5586d7f5d3SJohn Marino win = w->ww_win[row];
5686d7f5d3SJohn Marino nchanged = 0;
5786d7f5d3SJohn Marino for (; col < w->ww_i.r; col++)
5886d7f5d3SJohn Marino if (*smap++ == w->ww_index &&
5986d7f5d3SJohn Marino ns[col].c_w !=
6086d7f5d3SJohn Marino (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) {
6186d7f5d3SJohn Marino nchanged++;
6286d7f5d3SJohn Marino ns[col].c_w = x;
6386d7f5d3SJohn Marino }
6486d7f5d3SJohn Marino if (nchanged > 0)
6586d7f5d3SJohn Marino wwtouched[row] |= WWU_TOUCHED;
6686d7f5d3SJohn Marino }
6786d7f5d3SJohn Marino }
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