1 /* $NetBSD: wwframe.c,v 1.7 2003/08/07 11:17:39 agc 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)wwframe.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 __RCSID("$NetBSD: wwframe.c,v 1.7 2003/08/07 11:17:39 agc Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include "ww.h" 45 #include "tt.h" 46 47 #define frameok(w, r, c) (w1 = wwindex[wwsmap[r][c]], \ 48 w1->ww_fmap || w1->ww_order > (w)->ww_order) 49 50 void 51 wwframe(struct ww *w, struct ww *wframe) 52 { 53 int r, c; 54 char a1, a2, a3; 55 char b1, b2, b3; 56 int code; 57 struct ww *w1; 58 59 if (w->ww_w.t > 0) { 60 r = w->ww_w.t - 1; 61 c = w->ww_i.l - 1; 62 a1 = 0; 63 a2 = 0; 64 b1 = 0; 65 b2 = c < 0 || frameok(w, r, c); 66 67 for (; c < w->ww_i.r; c++) { 68 if (c + 1 >= wwncol) { 69 a3 = 1; 70 b3 = 1; 71 } else { 72 a3 = w->ww_index == wwsmap[r + 1][c + 1]; 73 b3 = frameok(w, r, c + 1); 74 } 75 if (b2) { 76 code = 0; 77 if ((a1 || a2) && b1) 78 code |= WWF_L; 79 if ((a2 || a3) && b3) 80 code |= WWF_R; 81 if (code) 82 wwframec(wframe, r, c, code|WWF_TOP); 83 } 84 a1 = a2; 85 a2 = a3; 86 b1 = b2; 87 b2 = b3; 88 } 89 if ((a1 || a2) && b1 && b2) 90 wwframec(wframe, r, c, WWF_L|WWF_TOP); 91 } 92 93 if (w->ww_w.b < wwnrow) { 94 r = w->ww_w.b; 95 c = w->ww_i.l - 1; 96 a1 = 0; 97 a2 = 0; 98 b1 = 0; 99 b2 = c < 0 || frameok(w, r, c); 100 101 for (; c < w->ww_i.r; c++) { 102 if (c + 1 >= wwncol) { 103 a3 = 1; 104 b3 = 1; 105 } else { 106 a3 = w->ww_index == wwsmap[r - 1][c + 1]; 107 b3 = frameok(w, r, c + 1); 108 } 109 if (b2) { 110 code = 0; 111 if ((a1 || a2) && b1) 112 code |= WWF_L; 113 if ((a2 || a3) && b3) 114 code |= WWF_R; 115 if (code) 116 wwframec(wframe, r, c, code); 117 } 118 a1 = a2; 119 a2 = a3; 120 b1 = b2; 121 b2 = b3; 122 } 123 if ((a1 || a2) && b1 && b2) 124 wwframec(wframe, r, c, WWF_L); 125 } 126 127 if (w->ww_w.l > 0) { 128 r = w->ww_i.t - 1; 129 c = w->ww_w.l - 1; 130 a1 = 0; 131 a2 = 0; 132 b1 = 0; 133 b2 = r < 0 || frameok(w, r, c); 134 135 for (; r < w->ww_i.b; r++) { 136 if (r + 1 >= wwnrow) { 137 a3 = 1; 138 b3 = 1; 139 } else { 140 a3 = w->ww_index == wwsmap[r + 1][c + 1]; 141 b3 = frameok(w, r + 1, c); 142 } 143 if (b2) { 144 code = 0; 145 if ((a1 || a2) && b1) 146 code |= WWF_U; 147 if ((a2 || a3) && b3) 148 code |= WWF_D; 149 if (code) 150 wwframec(wframe, r, c, code); 151 } 152 a1 = a2; 153 a2 = a3; 154 b1 = b2; 155 b2 = b3; 156 } 157 if ((a1 || a2) && b1 && b2) 158 wwframec(wframe, r, c, WWF_U); 159 } 160 161 if (w->ww_w.r < wwncol) { 162 r = w->ww_i.t - 1; 163 c = w->ww_w.r; 164 a1 = 0; 165 a2 = 0; 166 b1 = 0; 167 b2 = r < 0 || frameok(w, r, c); 168 169 for (; r < w->ww_i.b; r++) { 170 if (r + 1 >= wwnrow) { 171 a3 = 1; 172 b3 = 1; 173 } else { 174 a3 = w->ww_index == wwsmap[r + 1][c - 1]; 175 b3 = frameok(w, r + 1, c); 176 } 177 if (b2) { 178 code = 0; 179 if ((a1 || a2) && b1) 180 code |= WWF_U; 181 if ((a2 || a3) && b3) 182 code |= WWF_D; 183 if (code) 184 wwframec(wframe, r, c, code); 185 } 186 a1 = a2; 187 a2 = a3; 188 b1 = b2; 189 b2 = b3; 190 } 191 if ((a1 || a2) && b1 && b2) 192 wwframec(wframe, r, c, WWF_U); 193 } 194 } 195 196 void 197 wwframec(struct ww *f, int r, int c, char code) 198 { 199 char oldcode; 200 unsigned char *smap; 201 202 if (r < f->ww_i.t || r >= f->ww_i.b || c < f->ww_i.l || c >= f->ww_i.r) 203 return; 204 205 smap = &wwsmap[r][c]; 206 207 { 208 struct ww *w; 209 210 w = wwindex[*smap]; 211 if (w->ww_order > f->ww_order) { 212 if (w != &wwnobody && w->ww_win[r][c] == 0) 213 w->ww_nvis[r]--; 214 *smap = f->ww_index; 215 } 216 } 217 218 if (f->ww_fmap != 0) { 219 char *fmap; 220 221 fmap = &f->ww_fmap[r][c]; 222 oldcode = *fmap; 223 *fmap |= code; 224 if (code & WWF_TOP) 225 *fmap &= ~WWF_LABEL; 226 code = *fmap; 227 } else 228 oldcode = 0; 229 { 230 char *win = &f->ww_win[r][c]; 231 232 if (*win == WWM_GLS && *smap == f->ww_index) 233 f->ww_nvis[r]++; 234 *win &= ~WWM_GLS; 235 } 236 if (oldcode != code && (code & WWF_LABEL) == 0) { 237 short frame; 238 239 frame = tt.tt_frame[code & WWF_MASK]; 240 f->ww_buf[r][c].c_w = frame; 241 if (wwsmap[r][c] == f->ww_index) { 242 wwtouched[r] |= WWU_TOUCHED; 243 wwns[r][c].c_w = frame; 244 } 245 } 246 } 247