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1.4 ! downsj 1: /* $OpenBSD$ */
1.2 niklas 2: /* $NetBSD: wwframe.c,v 1.4 1996/02/08 21:49:05 mycroft Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Edward Wang at The University of California, Berkeley.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39:
40: #ifndef lint
41: #if 0
42: static char sccsid[] = "@(#)wwframe.c 8.1 (Berkeley) 6/6/93";
43: #else
1.4 ! downsj 44: static char rcsid[] = "$OpenBSD$";
1.1 deraadt 45: #endif
46: #endif /* not lint */
47:
48: #include "ww.h"
49: #include "tt.h"
50:
51: #define frameok(w, r, c) (w1 = wwindex[wwsmap[r][c]], \
52: w1->ww_fmap || w1->ww_order > (w)->ww_order)
53:
54: wwframe(w, wframe)
55: register struct ww *w;
56: struct ww *wframe;
57: {
58: register r, c;
59: char a1, a2, a3;
60: char b1, b2, b3;
61: register code;
62: register struct ww *w1;
63:
64: if (w->ww_w.t > 0) {
65: r = w->ww_w.t - 1;
66: c = w->ww_i.l - 1;
67: a1 = 0;
68: a2 = 0;
69: b1 = 0;
70: b2 = c < 0 || frameok(w, r, c);
71:
72: for (; c < w->ww_i.r; c++) {
73: if (c + 1 >= wwncol) {
74: a3 = 1;
75: b3 = 1;
76: } else {
1.2 niklas 77: a3 = w->ww_index == wwsmap[r + 1][c + 1];
1.1 deraadt 78: b3 = frameok(w, r, c + 1);
79: }
80: if (b2) {
81: code = 0;
82: if ((a1 || a2) && b1)
83: code |= WWF_L;
84: if ((a2 || a3) && b3)
85: code |= WWF_R;
86: if (code)
87: wwframec(wframe, r, c, code|WWF_TOP);
88: }
89: a1 = a2;
90: a2 = a3;
91: b1 = b2;
92: b2 = b3;
93: }
94: if ((a1 || a2) && b1 && b2)
95: wwframec(wframe, r, c, WWF_L|WWF_TOP);
96: }
97:
98: if (w->ww_w.b < wwnrow) {
99: r = w->ww_w.b;
100: c = w->ww_i.l - 1;
101: a1 = 0;
102: a2 = 0;
103: b1 = 0;
104: b2 = c < 0 || frameok(w, r, c);
105:
106: for (; c < w->ww_i.r; c++) {
107: if (c + 1 >= wwncol) {
108: a3 = 1;
109: b3 = 1;
110: } else {
1.2 niklas 111: a3 = w->ww_index == wwsmap[r - 1][c + 1];
1.1 deraadt 112: b3 = frameok(w, r, c + 1);
113: }
114: if (b2) {
115: code = 0;
116: if ((a1 || a2) && b1)
117: code |= WWF_L;
118: if ((a2 || a3) && b3)
119: code |= WWF_R;
120: if (code)
121: wwframec(wframe, r, c, code);
122: }
123: a1 = a2;
124: a2 = a3;
125: b1 = b2;
126: b2 = b3;
127: }
128: if ((a1 || a2) && b1 && b2)
129: wwframec(wframe, r, c, WWF_L);
130: }
131:
132: if (w->ww_w.l > 0) {
133: r = w->ww_i.t - 1;
134: c = w->ww_w.l - 1;
135: a1 = 0;
136: a2 = 0;
137: b1 = 0;
138: b2 = r < 0 || frameok(w, r, c);
139:
140: for (; r < w->ww_i.b; r++) {
141: if (r + 1 >= wwnrow) {
142: a3 = 1;
143: b3 = 1;
144: } else {
145: a3 = w->ww_index == wwsmap[r + 1][c + 1];
146: b3 = frameok(w, r + 1, c);
147: }
148: if (b2) {
149: code = 0;
150: if ((a1 || a2) && b1)
151: code |= WWF_U;
152: if ((a2 || a3) && b3)
153: code |= WWF_D;
154: if (code)
155: wwframec(wframe, r, c, code);
156: }
157: a1 = a2;
158: a2 = a3;
159: b1 = b2;
160: b2 = b3;
161: }
162: if ((a1 || a2) && b1 && b2)
163: wwframec(wframe, r, c, WWF_U);
164: }
165:
166: if (w->ww_w.r < wwncol) {
167: r = w->ww_i.t - 1;
168: c = w->ww_w.r;
169: a1 = 0;
170: a2 = 0;
171: b1 = 0;
172: b2 = r < 0 || frameok(w, r, c);
173:
174: for (; r < w->ww_i.b; r++) {
175: if (r + 1 >= wwnrow) {
176: a3 = 1;
177: b3 = 1;
178: } else {
179: a3 = w->ww_index == wwsmap[r + 1][c - 1];
180: b3 = frameok(w, r + 1, c);
181: }
182: if (b2) {
183: code = 0;
184: if ((a1 || a2) && b1)
185: code |= WWF_U;
186: if ((a2 || a3) && b3)
187: code |= WWF_D;
188: if (code)
189: wwframec(wframe, r, c, code);
190: }
191: a1 = a2;
192: a2 = a3;
193: b1 = b2;
194: b2 = b3;
195: }
196: if ((a1 || a2) && b1 && b2)
197: wwframec(wframe, r, c, WWF_U);
198: }
199: }
200:
201: wwframec(f, r, c, code)
202: register struct ww *f;
203: register r, c;
204: char code;
205: {
206: char oldcode;
1.2 niklas 207: register unsigned char *smap;
1.1 deraadt 208:
209: if (r < f->ww_i.t || r >= f->ww_i.b || c < f->ww_i.l || c >= f->ww_i.r)
210: return;
211:
212: smap = &wwsmap[r][c];
213:
214: {
215: register struct ww *w;
216:
217: w = wwindex[*smap];
218: if (w->ww_order > f->ww_order) {
219: if (w != &wwnobody && w->ww_win[r][c] == 0)
220: w->ww_nvis[r]--;
221: *smap = f->ww_index;
222: }
223: }
224:
225: if (f->ww_fmap != 0) {
226: register char *fmap;
227:
228: fmap = &f->ww_fmap[r][c];
229: oldcode = *fmap;
230: *fmap |= code;
231: if (code & WWF_TOP)
232: *fmap &= ~WWF_LABEL;
233: code = *fmap;
234: } else
235: oldcode = 0;
236: {
237: register char *win = &f->ww_win[r][c];
238:
239: if (*win == WWM_GLS && *smap == f->ww_index)
240: f->ww_nvis[r]++;
241: *win &= ~WWM_GLS;
242: }
243: if (oldcode != code && (code & WWF_LABEL) == 0) {
244: register short frame;
245:
246: frame = tt.tt_frame[code & WWF_MASK];
247: f->ww_buf[r][c].c_w = frame;
248: if (wwsmap[r][c] == f->ww_index) {
249: wwtouched[r] |= WWU_TOUCHED;
250: wwns[r][c].c_w = frame;
251: }
252: }
253: }