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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: }