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1.1 deraadt 1: /* $NetBSD: wwframe.c,v 1.3 1995/09/28 10:35:31 tls Exp $ */
2:
3: /*
4: * Copyright (c) 1983, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Edward Wang at The University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)wwframe.c 8.1 (Berkeley) 6/6/93";
42: #else
43: static char rcsid[] = "$NetBSD: wwframe.c,v 1.3 1995/09/28 10:35:31 tls Exp $";
44: #endif
45: #endif /* not lint */
46:
47: #include "ww.h"
48: #include "tt.h"
49:
50: #define frameok(w, r, c) (w1 = wwindex[wwsmap[r][c]], \
51: w1->ww_fmap || w1->ww_order > (w)->ww_order)
52:
53: wwframe(w, wframe)
54: register struct ww *w;
55: struct ww *wframe;
56: {
57: register r, c;
58: char a1, a2, a3;
59: char b1, b2, b3;
60: register char *smap;
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: smap = &wwsmap[r + 1][c + 1];
68: a1 = 0;
69: a2 = 0;
70: b1 = 0;
71: b2 = c < 0 || frameok(w, r, c);
72:
73: for (; c < w->ww_i.r; c++) {
74: if (c + 1 >= wwncol) {
75: a3 = 1;
76: b3 = 1;
77: } else {
78: a3 = w->ww_index == *smap++;
79: b3 = frameok(w, r, c + 1);
80: }
81: if (b2) {
82: code = 0;
83: if ((a1 || a2) && b1)
84: code |= WWF_L;
85: if ((a2 || a3) && b3)
86: code |= WWF_R;
87: if (code)
88: wwframec(wframe, r, c, code|WWF_TOP);
89: }
90: a1 = a2;
91: a2 = a3;
92: b1 = b2;
93: b2 = b3;
94: }
95: if ((a1 || a2) && b1 && b2)
96: wwframec(wframe, r, c, WWF_L|WWF_TOP);
97: }
98:
99: if (w->ww_w.b < wwnrow) {
100: r = w->ww_w.b;
101: c = w->ww_i.l - 1;
102: smap = &wwsmap[r - 1][c + 1];
103: a1 = 0;
104: a2 = 0;
105: b1 = 0;
106: b2 = c < 0 || frameok(w, r, c);
107:
108: for (; c < w->ww_i.r; c++) {
109: if (c + 1 >= wwncol) {
110: a3 = 1;
111: b3 = 1;
112: } else {
113: a3 = w->ww_index == *smap++;
114: b3 = frameok(w, r, c + 1);
115: }
116: if (b2) {
117: code = 0;
118: if ((a1 || a2) && b1)
119: code |= WWF_L;
120: if ((a2 || a3) && b3)
121: code |= WWF_R;
122: if (code)
123: wwframec(wframe, r, c, code);
124: }
125: a1 = a2;
126: a2 = a3;
127: b1 = b2;
128: b2 = b3;
129: }
130: if ((a1 || a2) && b1 && b2)
131: wwframec(wframe, r, c, WWF_L);
132: }
133:
134: if (w->ww_w.l > 0) {
135: r = w->ww_i.t - 1;
136: c = w->ww_w.l - 1;
137: a1 = 0;
138: a2 = 0;
139: b1 = 0;
140: b2 = r < 0 || frameok(w, r, c);
141:
142: for (; r < w->ww_i.b; r++) {
143: if (r + 1 >= wwnrow) {
144: a3 = 1;
145: b3 = 1;
146: } else {
147: a3 = w->ww_index == wwsmap[r + 1][c + 1];
148: b3 = frameok(w, r + 1, c);
149: }
150: if (b2) {
151: code = 0;
152: if ((a1 || a2) && b1)
153: code |= WWF_U;
154: if ((a2 || a3) && b3)
155: code |= WWF_D;
156: if (code)
157: wwframec(wframe, r, c, code);
158: }
159: a1 = a2;
160: a2 = a3;
161: b1 = b2;
162: b2 = b3;
163: }
164: if ((a1 || a2) && b1 && b2)
165: wwframec(wframe, r, c, WWF_U);
166: }
167:
168: if (w->ww_w.r < wwncol) {
169: r = w->ww_i.t - 1;
170: c = w->ww_w.r;
171: a1 = 0;
172: a2 = 0;
173: b1 = 0;
174: b2 = r < 0 || frameok(w, r, c);
175:
176: for (; r < w->ww_i.b; r++) {
177: if (r + 1 >= wwnrow) {
178: a3 = 1;
179: b3 = 1;
180: } else {
181: a3 = w->ww_index == wwsmap[r + 1][c - 1];
182: b3 = frameok(w, r + 1, c);
183: }
184: if (b2) {
185: code = 0;
186: if ((a1 || a2) && b1)
187: code |= WWF_U;
188: if ((a2 || a3) && b3)
189: code |= WWF_D;
190: if (code)
191: wwframec(wframe, r, c, code);
192: }
193: a1 = a2;
194: a2 = a3;
195: b1 = b2;
196: b2 = b3;
197: }
198: if ((a1 || a2) && b1 && b2)
199: wwframec(wframe, r, c, WWF_U);
200: }
201: }
202:
203: wwframec(f, r, c, code)
204: register struct ww *f;
205: register r, c;
206: char code;
207: {
208: char oldcode;
209: register char *smap;
210:
211: if (r < f->ww_i.t || r >= f->ww_i.b || c < f->ww_i.l || c >= f->ww_i.r)
212: return;
213:
214: smap = &wwsmap[r][c];
215:
216: {
217: register struct ww *w;
218:
219: w = wwindex[*smap];
220: if (w->ww_order > f->ww_order) {
221: if (w != &wwnobody && w->ww_win[r][c] == 0)
222: w->ww_nvis[r]--;
223: *smap = f->ww_index;
224: }
225: }
226:
227: if (f->ww_fmap != 0) {
228: register char *fmap;
229:
230: fmap = &f->ww_fmap[r][c];
231: oldcode = *fmap;
232: *fmap |= code;
233: if (code & WWF_TOP)
234: *fmap &= ~WWF_LABEL;
235: code = *fmap;
236: } else
237: oldcode = 0;
238: {
239: register char *win = &f->ww_win[r][c];
240:
241: if (*win == WWM_GLS && *smap == f->ww_index)
242: f->ww_nvis[r]++;
243: *win &= ~WWM_GLS;
244: }
245: if (oldcode != code && (code & WWF_LABEL) == 0) {
246: register short frame;
247:
248: frame = tt.tt_frame[code & WWF_MASK];
249: f->ww_buf[r][c].c_w = frame;
250: if (wwsmap[r][c] == f->ww_index) {
251: wwtouched[r] |= WWU_TOUCHED;
252: wwns[r][c].c_w = frame;
253: }
254: }
255: }