add_wch.c revision 1.1.2.1
1 /* $NetBSD: add_wch.c,v 1.1.2.1 2007/01/21 11:50:31 blymn Exp $ */ 2 3 /* 4 * Copyright (c) 2005 The NetBSD Foundation Inc. 5 * All rights reserved. 6 * 7 * This code is derived from code donated to the NetBSD Foundation 8 * by Ruibiao Qiu <ruibiao (at) arl.wustl.edu,ruibiao (at) gmail.com>. 9 * 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. Neither the name of the NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 24 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 25 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __RCSID("$NetBSD: add_wch.c,v 1.1.2.1 2007/01/21 11:50:31 blymn Exp $"); 40 #endif /* not lint */ 41 42 #include <stdlib.h> 43 #include "curses.h" 44 #include "curses_private.h" 45 46 /* 47 * add_wch -- 48 * Add the wide character to the current position in stdscr. 49 * 50 */ 51 int 52 add_wch(const cchar_t *wch) 53 { 54 #ifndef HAVE_WCHAR 55 return ERR; 56 #else 57 return wadd_wch(stdscr, wch); 58 #endif /* HAVE_WCHAR */ 59 } 60 61 62 /* 63 * mvadd_wch -- 64 * Add the wide character to stdscr at the given location. 65 */ 66 int 67 mvadd_wch(int y, int x, const cchar_t *wch) 68 { 69 #ifndef HAVE_WCHAR 70 return ERR; 71 #else 72 return mvwadd_wch(stdscr, y, x, wch); 73 #endif /* HAVE_WCHAR */ 74 } 75 76 77 /* 78 * mvwadd_wch -- 79 * Add the character to the given window at the given location. 80 */ 81 int 82 mvwadd_wch(WINDOW *win, int y, int x, const cchar_t *wch) 83 { 84 #ifndef HAVE_WCHAR 85 return ERR; 86 #else 87 if (wmove(win, y, x) == ERR) 88 return ERR; 89 90 return wadd_wch(win, wch); 91 #endif /* HAVE_WCHAR */ 92 } 93 94 95 /* 96 * wadd_wch -- 97 * Add the wide character to the current position in the 98 * given window. 99 * 100 */ 101 int 102 wadd_wch(WINDOW *win, const cchar_t *wch) 103 { 104 #ifndef HAVE_WCHAR 105 return ERR; 106 #else 107 int x = win->curx, y = win->cury, sx = 0, ex = 0, cw = 0, i = 0, 108 newx = 0; 109 __LDATA *lp = &win->lines[y]->line[x], *tp = NULL; 110 nschar_t *np = NULL, *tnp = NULL; 111 __LINE *lnp = NULL; 112 cchar_t cc; 113 114 #ifdef DEBUG 115 for (i = 0; i < win->maxy; i++) { 116 assert(win->lines[i]->sentinel == SENTINEL_VALUE); 117 } 118 __CTRACE("[wadd_wch]win(%p)", win); 119 #endif 120 121 /* special characters handling */ 122 lnp = win->lines[y]; 123 switch (wch->vals[0]) { 124 case L'\b': 125 if (--x < 0) 126 x = 0; 127 win->curx = x; 128 return OK; 129 case L'\r': 130 win->curx = 0; 131 return OK; 132 case L'\n': 133 wclrtoeol(win); 134 x = win->curx; 135 y = win->cury; 136 x = 0; 137 lnp->flags &= ~__ISPASTEOL; 138 if (y == win->scr_b) { 139 if (!(win->flags & __SCROLLOK)) 140 return ERR; 141 win->cury = y; 142 win->curx = x; 143 scroll(win); 144 y = win->cury; 145 x = win->curx; 146 } else { 147 y++; 148 } 149 win->curx = x; 150 win->cury = y; 151 return OK; 152 case L'\t': 153 cc.vals[0] = L' '; 154 cc.elements = 1; 155 cc.attributes = win->wattr; 156 for (i = 0; i < 8 - (x % 8); i++) { 157 if (wadd_wch(win, &cc) == ERR) 158 return ERR; 159 } 160 return OK; 161 } 162 163 /* check for non-spacing character */ 164 if (!wcwidth(wch->vals[0])) { 165 cw = WCOL(*lp); 166 if (cw < 0) { 167 lp += cw; 168 x += cw; 169 } 170 for (i = 0; i < wch->elements; i++) { 171 if (!(np = (nschar_t *) malloc(sizeof(nschar_t)))) 172 return ERR;; 173 np->ch = wch->vals[i]; 174 np->next = lp->nsp; 175 lp->nsp = np; 176 } 177 lnp->flags |= __ISDIRTY; 178 newx = x + win->ch_off; 179 if (newx < *lnp->firstchp) 180 *lnp->firstchp = newx; 181 if (newx > *lnp->lastchp) 182 *lnp->lastchp = newx; 183 __touchline(win, y, x, x); 184 return OK; 185 } 186 /* check for new line first */ 187 if (lnp->flags & __ISPASTEOL) { 188 x = 0; 189 lnp->flags &= ~__ISPASTEOL; 190 if (y == win->scr_b) { 191 if (!(win->flags & __SCROLLOK)) 192 return ERR; 193 win->cury = y; 194 win->curx = x; 195 scroll(win); 196 y = win->cury; 197 x = win->curx; 198 } else { 199 y++; 200 } 201 lnp = win->lines[y]; 202 lp = &win->lines[y]->line[x]; 203 } 204 /* clear out the current character */ 205 cw = WCOL(*lp); 206 if (cw >= 0) { 207 sx = x; 208 } else { 209 for (sx = x - 1; sx >= max(x + cw, 0); sx--) { 210 #ifdef DEBUG 211 __CTRACE("[wadd_wch]clear current char (%d,%d)", 212 y, sx); 213 #endif /* DEBUG */ 214 tp = &win->lines[y]->line[sx]; 215 tp->ch = (wchar_t) btowc((int) win->bch); 216 if (_cursesi_copy_nsp(win->bnsp, tp) == ERR) 217 return ERR; 218 219 tp->attr = win->battr; 220 SET_WCOL(*tp, 1); 221 } 222 sx = x + cw; 223 lnp->flags |= __ISDIRTY; 224 newx = sx + win->ch_off; 225 if (newx < *lnp->firstchp) 226 *lnp->firstchp = newx; 227 } 228 229 /* check for enough space before the end of line */ 230 cw = wcwidth(wch->vals[0]); 231 if (cw > win->maxx - x) { 232 #ifdef DEBUG 233 __CTRACE("[wadd_wch]clear EOL (%d,%d)", y, x); 234 #endif /* DEBUG */ 235 lnp->flags |= __ISDIRTY; 236 newx = x + win->ch_off; 237 if (newx < *lnp->firstchp) 238 *lnp->firstchp = newx; 239 for (tp = lp; x < win->maxx; tp++, x++) { 240 tp->ch = (wchar_t) btowc((int) win->bch); 241 if (_cursesi_copy_nsp(win->bnsp, tp) == ERR) 242 return ERR; 243 tp->attr = win->battr; 244 SET_WCOL(*tp, 1); 245 } 246 newx = win->maxx - 1 + win->ch_off; 247 if (newx > *lnp->lastchp) 248 *lnp->lastchp = newx; 249 __touchline(win, y, sx, (int) win->maxx - 1); 250 sx = x = 0; 251 if (y == win->scr_b) { 252 if (!(win->flags & __SCROLLOK)) 253 return ERR; 254 win->curx = x; 255 win->cury = y; 256 scroll(win); 257 x = win->curx; 258 y = win->cury; 259 } else { 260 y++; 261 } 262 lp = &win->lines[y]->line[0]; 263 lnp = win->lines[y]; 264 } 265 win->cury = y; 266 267 /* add spacing character */ 268 #ifdef DEBUG 269 __CTRACE("[wadd_wch]add character (%d,%d)%x", 270 y, x, wch->vals[0]); 271 #endif /* DEBUG */ 272 lnp->flags |= __ISDIRTY; 273 newx = x + win->ch_off; 274 if (newx < *lnp->firstchp) 275 *lnp->firstchp = newx; 276 if (lp->nsp) { 277 np = lp->nsp; 278 while (np) { 279 tnp = np->next; 280 free(np); 281 np = tnp; 282 } 283 lp->nsp = NULL; 284 } 285 lp->ch = wch->vals[0]; 286 lp->attr = wch->attributes & WA_ATTRIBUTES; 287 SET_WCOL(*lp, cw); 288 if (wch->elements > 1) { 289 for (i = 1; i < wch->elements; i++) { 290 np = (nschar_t *)malloc(sizeof(nschar_t)); 291 if (!np) 292 return ERR;; 293 np->ch = wch->vals[i]; 294 np->next = lp->nsp; 295 #ifdef DEBUG 296 __CTRACE("[wadd_wch]add non-spacing char 0x%x", 297 np->ch); 298 #endif /* DEBUG */ 299 lp->nsp = np; 300 } 301 } 302 #ifdef DEBUG 303 __CTRACE("[wadd_wch]non-spacing list header: %p\n", lp->nsp); 304 __CTRACE("[wadd_wch]add rest columns (%d:%d)\n", 305 sx + 1, sx + cw - 1); 306 #endif /* DEBUG */ 307 for (tp = lp + 1, x = sx + 1; x - sx <= cw - 1; tp++, x++) { 308 if (tp->nsp) { 309 np = tp->nsp; 310 while (np) { 311 tnp = np->next; 312 free(np); 313 np = tnp; 314 } 315 tp->nsp = NULL; 316 } 317 tp->ch = wch->vals[0]; 318 tp->attr = wch->attributes & WA_ATTRIBUTES; 319 SET_WCOL(*tp, sx - x); 320 } 321 if (x == win->maxx) { 322 lnp->flags |= __ISPASTEOL; 323 newx = win->maxx - 1 + win->ch_off; 324 if (newx > *lnp->lastchp) 325 *lnp->lastchp = newx; 326 __touchline(win, y, sx, (int) win->maxx - 1); 327 win->curx = sx; 328 } else { 329 win->curx = x; 330 331 /* clear the remining of the current characer */ 332 if (x && x < win->maxx) { 333 ex = sx + cw; 334 tp = &win->lines[y]->line[ex]; 335 while (ex < win->maxx && WCOL(*tp) < 0) { 336 #ifdef DEBUG 337 __CTRACE("[wadd_wch]clear remaining of current char (%d,%d)", 338 y, ex); 339 #endif /* DEBUG */ 340 tp->ch = (wchar_t) btowc((int) win->bch); 341 if (_cursesi_copy_nsp(win->bnsp, tp) == ERR) 342 return ERR; 343 tp->attr = win->battr; 344 SET_WCOL(*tp, 1); 345 tp++, ex++; 346 } 347 newx = ex - 1 + win->ch_off; 348 if (newx > *lnp->lastchp) 349 *lnp->lastchp = newx; 350 __touchline(win, y, sx, ex - 1); 351 } 352 } 353 354 #ifdef DEBUG 355 __CTRACE("add_wch: %d : 0x%x\n", lp->ch, lp->attr); 356 #endif /* DEBUG */ 357 return OK; 358 #endif /* HAVE_WCHAR */ 359 } 360
Indexes created Mon Sep 29 18:09:42 GMT 2025