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1.2 ! niklas 1: /* $NetBSD: wwframe.c,v 1.4 1996/02/08 21:49:05 mycroft Exp $ */
1.1 deraadt 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
1.2 ! niklas 43: static char rcsid[] = "$NetBSD: wwframe.c,v 1.4 1996/02/08 21:49:05 mycroft Exp $";
1.1 deraadt 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 code;
61: register struct ww *w1;
62:
63: if (w->ww_w.t > 0) {
64: r = w->ww_w.t - 1;
65: c = w->ww_i.l - 1;
66: a1 = 0;
67: a2 = 0;
68: b1 = 0;
69: b2 = c < 0 || frameok(w, r, c);
70:
71: for (; c < w->ww_i.r; c++) {
72: if (c + 1 >= wwncol) {
73: a3 = 1;
74: b3 = 1;
75: } else {
1.2 ! niklas 76: a3 = w->ww_index == wwsmap[r + 1][c + 1];
1.1 deraadt 77: b3 = frameok(w, r, c + 1);
78: }
79: if (b2) {
80: code = 0;
81: if ((a1 || a2) && b1)
82: code |= WWF_L;
83: if ((a2 || a3) && b3)
84: code |= WWF_R;
85: if (code)
86: wwframec(wframe, r, c, code|WWF_TOP);
87: }
88: a1 = a2;
89: a2 = a3;
90: b1 = b2;
91: b2 = b3;
92: }
93: if ((a1 || a2) && b1 && b2)
94: wwframec(wframe, r, c, WWF_L|WWF_TOP);
95: }
96:
97: if (w->ww_w.b < wwnrow) {
98: r = w->ww_w.b;
99: c = w->ww_i.l - 1;
100: a1 = 0;
101: a2 = 0;
102: b1 = 0;
103: b2 = c < 0 || frameok(w, r, c);
104:
105: for (; c < w->ww_i.r; c++) {
106: if (c + 1 >= wwncol) {
107: a3 = 1;
108: b3 = 1;
109: } else {
1.2 ! niklas 110: a3 = w->ww_index == wwsmap[r - 1][c + 1];
1.1 deraadt 111: b3 = frameok(w, r, c + 1);
112: }
113: if (b2) {
114: code = 0;
115: if ((a1 || a2) && b1)
116: code |= WWF_L;
117: if ((a2 || a3) && b3)
118: code |= WWF_R;
119: if (code)
120: wwframec(wframe, r, c, code);
121: }
122: a1 = a2;
123: a2 = a3;
124: b1 = b2;
125: b2 = b3;
126: }
127: if ((a1 || a2) && b1 && b2)
128: wwframec(wframe, r, c, WWF_L);
129: }
130:
131: if (w->ww_w.l > 0) {
132: r = w->ww_i.t - 1;
133: c = w->ww_w.l - 1;
134: a1 = 0;
135: a2 = 0;
136: b1 = 0;
137: b2 = r < 0 || frameok(w, r, c);
138:
139: for (; r < w->ww_i.b; r++) {
140: if (r + 1 >= wwnrow) {
141: a3 = 1;
142: b3 = 1;
143: } else {
144: a3 = w->ww_index == wwsmap[r + 1][c + 1];
145: b3 = frameok(w, r + 1, c);
146: }
147: if (b2) {
148: code = 0;
149: if ((a1 || a2) && b1)
150: code |= WWF_U;
151: if ((a2 || a3) && b3)
152: code |= WWF_D;
153: if (code)
154: wwframec(wframe, r, c, code);
155: }
156: a1 = a2;
157: a2 = a3;
158: b1 = b2;
159: b2 = b3;
160: }
161: if ((a1 || a2) && b1 && b2)
162: wwframec(wframe, r, c, WWF_U);
163: }
164:
165: if (w->ww_w.r < wwncol) {
166: r = w->ww_i.t - 1;
167: c = w->ww_w.r;
168: a1 = 0;
169: a2 = 0;
170: b1 = 0;
171: b2 = r < 0 || frameok(w, r, c);
172:
173: for (; r < w->ww_i.b; r++) {
174: if (r + 1 >= wwnrow) {
175: a3 = 1;
176: b3 = 1;
177: } else {
178: a3 = w->ww_index == wwsmap[r + 1][c - 1];
179: b3 = frameok(w, r + 1, c);
180: }
181: if (b2) {
182: code = 0;
183: if ((a1 || a2) && b1)
184: code |= WWF_U;
185: if ((a2 || a3) && b3)
186: code |= WWF_D;
187: if (code)
188: wwframec(wframe, r, c, code);
189: }
190: a1 = a2;
191: a2 = a3;
192: b1 = b2;
193: b2 = b3;
194: }
195: if ((a1 || a2) && b1 && b2)
196: wwframec(wframe, r, c, WWF_U);
197: }
198: }
199:
200: wwframec(f, r, c, code)
201: register struct ww *f;
202: register r, c;
203: char code;
204: {
205: char oldcode;
1.2 ! niklas 206: register unsigned char *smap;
1.1 deraadt 207:
208: if (r < f->ww_i.t || r >= f->ww_i.b || c < f->ww_i.l || c >= f->ww_i.r)
209: return;
210:
211: smap = &wwsmap[r][c];
212:
213: {
214: register struct ww *w;
215:
216: w = wwindex[*smap];
217: if (w->ww_order > f->ww_order) {
218: if (w != &wwnobody && w->ww_win[r][c] == 0)
219: w->ww_nvis[r]--;
220: *smap = f->ww_index;
221: }
222: }
223:
224: if (f->ww_fmap != 0) {
225: register char *fmap;
226:
227: fmap = &f->ww_fmap[r][c];
228: oldcode = *fmap;
229: *fmap |= code;
230: if (code & WWF_TOP)
231: *fmap &= ~WWF_LABEL;
232: code = *fmap;
233: } else
234: oldcode = 0;
235: {
236: register char *win = &f->ww_win[r][c];
237:
238: if (*win == WWM_GLS && *smap == f->ww_index)
239: f->ww_nvis[r]++;
240: *win &= ~WWM_GLS;
241: }
242: if (oldcode != code && (code & WWF_LABEL) == 0) {
243: register short frame;
244:
245: frame = tt.tt_frame[code & WWF_MASK];
246: f->ww_buf[r][c].c_w = frame;
247: if (wwsmap[r][c] == f->ww_index) {
248: wwtouched[r] |= WWU_TOUCHED;
249: wwns[r][c].c_w = frame;
250: }
251: }
252: }