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250 lines
5.7 KiB
C
250 lines
5.7 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Edward Wang at The University of California, Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)wwframe.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include "ww.h"
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#include "tt.h"
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#define frameok(w, r, c) (w1 = wwindex[wwsmap[r][c]], \
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w1->ww_fmap || w1->ww_order > (w)->ww_order)
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wwframe(w, wframe)
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register struct ww *w;
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struct ww *wframe;
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{
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register r, c;
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char a1, a2, a3;
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char b1, b2, b3;
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register char *smap;
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register code;
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register struct ww *w1;
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if (w->ww_w.t > 0) {
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r = w->ww_w.t - 1;
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c = w->ww_i.l - 1;
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smap = &wwsmap[r + 1][c + 1];
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a1 = 0;
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a2 = 0;
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b1 = 0;
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b2 = c < 0 || frameok(w, r, c);
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for (; c < w->ww_i.r; c++) {
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if (c + 1 >= wwncol) {
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a3 = 1;
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b3 = 1;
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} else {
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a3 = w->ww_index == *smap++;
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b3 = frameok(w, r, c + 1);
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}
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if (b2) {
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code = 0;
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if ((a1 || a2) && b1)
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code |= WWF_L;
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if ((a2 || a3) && b3)
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code |= WWF_R;
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if (code)
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wwframec(wframe, r, c, code|WWF_TOP);
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}
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a1 = a2;
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a2 = a3;
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b1 = b2;
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b2 = b3;
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}
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if ((a1 || a2) && b1 && b2)
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wwframec(wframe, r, c, WWF_L|WWF_TOP);
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}
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if (w->ww_w.b < wwnrow) {
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r = w->ww_w.b;
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c = w->ww_i.l - 1;
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smap = &wwsmap[r - 1][c + 1];
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a1 = 0;
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a2 = 0;
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b1 = 0;
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b2 = c < 0 || frameok(w, r, c);
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for (; c < w->ww_i.r; c++) {
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if (c + 1 >= wwncol) {
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a3 = 1;
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b3 = 1;
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} else {
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a3 = w->ww_index == *smap++;
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b3 = frameok(w, r, c + 1);
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}
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if (b2) {
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code = 0;
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if ((a1 || a2) && b1)
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code |= WWF_L;
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if ((a2 || a3) && b3)
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code |= WWF_R;
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if (code)
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wwframec(wframe, r, c, code);
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}
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a1 = a2;
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a2 = a3;
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b1 = b2;
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b2 = b3;
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}
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if ((a1 || a2) && b1 && b2)
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wwframec(wframe, r, c, WWF_L);
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}
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if (w->ww_w.l > 0) {
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r = w->ww_i.t - 1;
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c = w->ww_w.l - 1;
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a1 = 0;
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a2 = 0;
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b1 = 0;
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b2 = r < 0 || frameok(w, r, c);
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for (; r < w->ww_i.b; r++) {
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if (r + 1 >= wwnrow) {
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a3 = 1;
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b3 = 1;
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} else {
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a3 = w->ww_index == wwsmap[r + 1][c + 1];
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b3 = frameok(w, r + 1, c);
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}
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if (b2) {
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code = 0;
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if ((a1 || a2) && b1)
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code |= WWF_U;
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if ((a2 || a3) && b3)
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code |= WWF_D;
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if (code)
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wwframec(wframe, r, c, code);
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}
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a1 = a2;
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a2 = a3;
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b1 = b2;
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b2 = b3;
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}
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if ((a1 || a2) && b1 && b2)
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wwframec(wframe, r, c, WWF_U);
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}
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if (w->ww_w.r < wwncol) {
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r = w->ww_i.t - 1;
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c = w->ww_w.r;
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a1 = 0;
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a2 = 0;
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b1 = 0;
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b2 = r < 0 || frameok(w, r, c);
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for (; r < w->ww_i.b; r++) {
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if (r + 1 >= wwnrow) {
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a3 = 1;
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b3 = 1;
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} else {
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a3 = w->ww_index == wwsmap[r + 1][c - 1];
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b3 = frameok(w, r + 1, c);
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}
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if (b2) {
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code = 0;
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if ((a1 || a2) && b1)
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code |= WWF_U;
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if ((a2 || a3) && b3)
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code |= WWF_D;
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if (code)
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wwframec(wframe, r, c, code);
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}
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a1 = a2;
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a2 = a3;
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b1 = b2;
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b2 = b3;
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}
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if ((a1 || a2) && b1 && b2)
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wwframec(wframe, r, c, WWF_U);
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}
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}
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wwframec(f, r, c, code)
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register struct ww *f;
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register r, c;
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char code;
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{
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char oldcode;
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register char *smap;
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if (r < f->ww_i.t || r >= f->ww_i.b || c < f->ww_i.l || c >= f->ww_i.r)
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return;
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smap = &wwsmap[r][c];
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{
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register struct ww *w;
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w = wwindex[*smap];
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if (w->ww_order > f->ww_order) {
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if (w != &wwnobody && w->ww_win[r][c] == 0)
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w->ww_nvis[r]--;
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*smap = f->ww_index;
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}
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}
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if (f->ww_fmap != 0) {
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register char *fmap;
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fmap = &f->ww_fmap[r][c];
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oldcode = *fmap;
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*fmap |= code;
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if (code & WWF_TOP)
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*fmap &= ~WWF_LABEL;
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code = *fmap;
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} else
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oldcode = 0;
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{
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register char *win = &f->ww_win[r][c];
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if (*win == WWM_GLS && *smap == f->ww_index)
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f->ww_nvis[r]++;
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*win &= ~WWM_GLS;
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}
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if (oldcode != code && (code & WWF_LABEL) == 0) {
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register short frame;
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frame = tt.tt_frame[code & WWF_MASK];
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f->ww_buf[r][c].c_w = frame;
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if (wwsmap[r][c] == f->ww_index) {
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wwtouched[r] |= WWU_TOUCHED;
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wwns[r][c].c_w = frame;
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}
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}
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}
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