refresh.c revision 1.67
1 /* $NetBSD: refresh.c,v 1.67 2007/05/29 19:07:19 veego Exp $ */ 2 3 /* 4 * Copyright (c) 1981, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)refresh.c 8.7 (Berkeley) 8/13/94"; 36 #else 37 __RCSID("$NetBSD: refresh.c,v 1.67 2007/05/29 19:07:19 veego Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <stdlib.h> 42 #include <string.h> 43 44 #include "curses.h" 45 #include "curses_private.h" 46 47 static void domvcur(int, int, int, int); 48 static int makech(int); 49 static void quickch(void); 50 static void scrolln(int, int, int, int, int); 51 52 static int _cursesi_wnoutrefresh(SCREEN *, WINDOW *, 53 int, int, int, int, int, int); 54 55 #ifdef HAVE_WCHAR 56 int cellcmp( __LDATA *, __LDATA * ); 57 int linecmp( __LDATA *, __LDATA *, size_t ); 58 #endif /* HAVE_WCHAR */ 59 60 #ifndef _CURSES_USE_MACROS 61 62 /* 63 * refresh -- 64 * Make the current screen look like "stdscr" over the area covered by 65 * stdscr. 66 */ 67 int 68 refresh(void) 69 { 70 return wrefresh(stdscr); 71 } 72 73 #endif 74 75 /* 76 * wnoutrefresh -- 77 * Add the contents of "win" to the virtual window. 78 */ 79 int 80 wnoutrefresh(WINDOW *win) 81 { 82 #ifdef DEBUG 83 __CTRACE(__CTRACE_REFRESH, "wnoutrefresh: win %p\n", win); 84 #endif 85 86 return _cursesi_wnoutrefresh(_cursesi_screen, win, 0, 0, win->begy, 87 win->begx, win->maxy, win->maxx); 88 } 89 90 /* 91 * pnoutrefresh -- 92 * Add the contents of "pad" to the virtual window. 93 */ 94 int 95 pnoutrefresh(WINDOW *pad, int pbegy, int pbegx, int sbegy, int sbegx, 96 int smaxy, int smaxx) 97 { 98 int pmaxy, pmaxx; 99 100 #ifdef DEBUG 101 __CTRACE(__CTRACE_REFRESH, "pnoutrefresh: pad %p, flags 0x%08x\n", 102 pad, pad->flags); 103 __CTRACE(__CTRACE_REFRESH, 104 "pnoutrefresh: (%d, %d), (%d, %d), (%d, %d)\n", 105 pbegy, pbegx, sbegy, sbegx, smaxy, smaxx); 106 #endif 107 108 /* SUS says if these are negative, they should be treated as zero */ 109 if (pbegy < 0) 110 pbegy = 0; 111 if (pbegx < 0) 112 pbegx = 0; 113 if (sbegy < 0) 114 sbegy = 0; 115 if (sbegx < 0) 116 sbegx = 0; 117 118 /* Calculate rectangle on pad - used by _cursesi_wnoutrefresh */ 119 pmaxy = pbegy + smaxy - sbegy + 1; 120 pmaxx = pbegx + smaxx - sbegx + 1; 121 122 /* Check rectangle fits in pad */ 123 if (pmaxy > pad->maxy - pad->begy) 124 pmaxy = pad->maxy - pad->begy; 125 if (pmaxx > pad->maxx - pad->begx) 126 pmaxx = pad->maxx - pad->begx; 127 128 if (smaxy - sbegy < 0 || smaxx - sbegx < 0 ) 129 return ERR; 130 131 return _cursesi_wnoutrefresh(_cursesi_screen, pad, 132 pad->begy + pbegy, pad->begx + pbegx, pad->begy + sbegy, 133 pad->begx + sbegx, pmaxy, pmaxx); 134 } 135 136 /* 137 * _cursesi_wnoutrefresh -- 138 * Does the grunt work for wnoutrefresh to the given screen. 139 * Copies the part of the window given by the rectangle 140 * (begy, begx) to (maxy, maxx) at screen position (wbegy, wbegx). 141 */ 142 int 143 _cursesi_wnoutrefresh(SCREEN *screen, WINDOW *win, int begy, int begx, 144 int wbegy, int wbegx, int maxy, int maxx) 145 { 146 147 short sy, wy, wx, y_off, x_off, mx; 148 __LINE *wlp, *vlp; 149 WINDOW *sub_win, *orig; 150 151 #ifdef DEBUG 152 __CTRACE(__CTRACE_REFRESH, "_wnoutrefresh: win %p, flags 0x%08x\n", 153 win, win->flags); 154 __CTRACE(__CTRACE_REFRESH, 155 "_wnoutrefresh: (%d, %d), (%d, %d), (%d, %d)\n", 156 begy, begx, wbegy, wbegx, maxy, maxx); 157 #endif 158 159 if (screen->curwin) 160 return OK; 161 162 /* 163 * Recurse through any sub-windows, mark as dirty lines on the parent 164 * window that are dirty on the sub-window and clear the dirty flag on 165 * the sub-window. 166 */ 167 if (win->orig == 0) { 168 orig = win; 169 for (sub_win = win->nextp; sub_win != win; 170 sub_win = sub_win->nextp) { 171 #ifdef DEBUG 172 __CTRACE(__CTRACE_REFRESH, 173 "wnout_refresh: win %p, sub_win %p\n", 174 orig, sub_win); 175 #endif 176 for (sy = 0; sy < sub_win->maxy; sy++) { 177 if (sub_win->lines[sy]->flags == __ISDIRTY) { 178 orig->lines[sy + sub_win->begy - orig->begy]->flags 179 |= __ISDIRTY; 180 sub_win->lines[sy]->flags 181 &= ~__ISDIRTY; 182 } 183 } 184 } 185 } 186 187 /* Check that cursor position on "win" is valid for "__virtscr" */ 188 if (win->cury + wbegy - begy < screen->__virtscr->maxy && 189 win->cury + wbegy - begy >= 0 && win->cury < maxy - begy) 190 screen->__virtscr->cury = win->cury + wbegy - begy; 191 if (win->curx + wbegx - begx < screen->__virtscr->maxx && 192 win->curx + wbegx - begx >= 0 && win->curx < maxx - begx) 193 screen->__virtscr->curx = win->curx + wbegx - begx; 194 195 /* Copy the window flags from "win" to "__virtscr" */ 196 if (win->flags & __CLEAROK) { 197 if (win->flags & __FULLWIN) 198 screen->__virtscr->flags |= __CLEAROK; 199 win->flags &= ~__CLEAROK; 200 } 201 screen->__virtscr->flags &= ~__LEAVEOK; 202 screen->__virtscr->flags |= win->flags; 203 204 for (wy = begy, y_off = wbegy; wy < maxy && 205 y_off < screen->__virtscr->maxy; wy++, y_off++) { 206 wlp = win->lines[wy]; 207 #ifdef DEBUG 208 __CTRACE(__CTRACE_REFRESH, 209 "_wnoutrefresh: wy %d\tf %d\tl %d\tflags %x\n", 210 wy, *wlp->firstchp, *wlp->lastchp, wlp->flags); 211 #endif 212 if ((wlp->flags & __ISDIRTY) == 0) 213 continue; 214 vlp = screen->__virtscr->lines[y_off]; 215 216 if (*wlp->firstchp < maxx + win->ch_off && 217 *wlp->lastchp >= win->ch_off) { 218 /* Set start column */ 219 wx = begx; 220 x_off = wbegx; 221 if (*wlp->firstchp - win->ch_off > 0) { 222 wx += *wlp->firstchp - win->ch_off; 223 x_off += *wlp->firstchp - win->ch_off; 224 } 225 /* Set finish column */ 226 mx = maxx; 227 if (mx > *wlp->lastchp - win->ch_off + 1) 228 mx = *wlp->lastchp - win->ch_off + 1; 229 if (x_off + (mx - wx) > __virtscr->maxx) 230 mx -= (x_off + maxx) - __virtscr->maxx; 231 /* Copy line from "win" to "__virtscr". */ 232 while (wx < mx) { 233 #ifdef DEBUG 234 __CTRACE(__CTRACE_REFRESH, 235 "_wnoutrefresh: copy from %d, " 236 "%d to %d, %d\n", 237 wy, wx, y_off, x_off); 238 #endif 239 /* Copy character */ 240 vlp->line[x_off].ch = wlp->line[wx].ch; 241 /* Copy attributes */ 242 vlp->line[x_off].attr = wlp->line[wx].attr; 243 /* Check for nca conflict with colour */ 244 if ((vlp->line[x_off].attr & __COLOR) && 245 (vlp->line[x_off].attr & 246 _cursesi_screen->nca)) 247 vlp->line[x_off].attr &= ~__COLOR; 248 #ifdef HAVE_WCHAR 249 if (wlp->line[wx].ch 250 == (wchar_t)btowc((int) win->bch)) { 251 vlp->line[x_off].ch = win->bch; 252 SET_WCOL( vlp->line[x_off], 1 ); 253 if (_cursesi_copy_nsp(win->bnsp, 254 &vlp->line[x_off]) 255 == ERR) 256 return ERR; 257 } 258 #endif /* HAVE_WCHAR */ 259 wx++; 260 x_off++; 261 } 262 263 /* Set flags on "__virtscr" and unset on "win". */ 264 if (wlp->flags & __ISPASTEOL) 265 vlp->flags |= __ISPASTEOL; 266 else 267 vlp->flags &= ~__ISPASTEOL; 268 if (wlp->flags & __ISDIRTY) 269 vlp->flags |= __ISDIRTY; 270 271 #ifdef DEBUG 272 __CTRACE(__CTRACE_REFRESH, 273 "win: firstch = %d, lastch = %d\n", 274 *wlp->firstchp, *wlp->lastchp); 275 #endif 276 /* Set change pointers on "__virtscr". */ 277 if (*vlp->firstchp > 278 *wlp->firstchp + wbegx - win->ch_off) 279 *vlp->firstchp = 280 *wlp->firstchp + wbegx - win->ch_off; 281 if (*vlp->lastchp < 282 *wlp->lastchp + wbegx - win->ch_off) 283 *vlp->lastchp = 284 *wlp->lastchp + wbegx - win->ch_off; 285 #ifdef DEBUG 286 __CTRACE(__CTRACE_REFRESH, 287 "__virtscr: firstch = %d, lastch = %d\n", 288 *vlp->firstchp, *vlp->lastchp); 289 #endif 290 /* 291 * Unset change pointers only if a window, as a pad 292 * can be displayed again without any of the contents 293 * changing. 294 */ 295 if (!(win->flags & __ISPAD)) { 296 /* Set change pointers on "win". */ 297 if (*wlp->firstchp >= win->ch_off) 298 *wlp->firstchp = maxx + win->ch_off; 299 if (*wlp->lastchp < maxx + win->ch_off) 300 *wlp->lastchp = win->ch_off; 301 if ((*wlp->lastchp < *wlp->firstchp) || 302 (*wlp->firstchp >= maxx + win->ch_off) || 303 (*wlp->lastchp <= win->ch_off)) { 304 #ifdef DEBUG 305 __CTRACE(__CTRACE_REFRESH, 306 "_wnoutrefresh: " 307 "line %d notdirty\n", wy); 308 #endif 309 wlp->flags &= ~__ISDIRTY; 310 } 311 } 312 } 313 } 314 return OK; 315 } 316 317 /* 318 * wrefresh -- 319 * Make the current screen look like "win" over the area covered by 320 * win. 321 */ 322 int 323 wrefresh(WINDOW *win) 324 { 325 int retval; 326 327 #ifdef DEBUG 328 __CTRACE(__CTRACE_REFRESH, "wrefresh: win %p\n", win); 329 #endif 330 331 _cursesi_screen->curwin = (win == _cursesi_screen->curscr); 332 if (!_cursesi_screen->curwin) 333 retval = _cursesi_wnoutrefresh(_cursesi_screen, win, 0, 0, 334 win->begy, win->begx, win->maxy, win->maxx); 335 else 336 retval = OK; 337 if (retval == OK) { 338 retval = doupdate(); 339 if (!(win->flags & __LEAVEOK)) { 340 win->cury = max(0, curscr->cury - win->begy); 341 win->curx = max(0, curscr->curx - win->begx); 342 } 343 } 344 _cursesi_screen->curwin = 0; 345 return(retval); 346 } 347 348 /* 349 * prefresh -- 350 * Make the current screen look like "pad" over the area coverd by 351 * the specified area of pad. 352 */ 353 int 354 prefresh(WINDOW *pad, int pbegy, int pbegx, int sbegy, int sbegx, 355 int smaxy, int smaxx) 356 { 357 int retval; 358 359 #ifdef DEBUG 360 __CTRACE(__CTRACE_REFRESH, "prefresh: pad %p, flags 0x%08x\n", 361 pad, pad->flags); 362 #endif 363 /* Retain values in case pechochar() is called. */ 364 pad->pbegy = pbegy; 365 pad->pbegx = pbegx; 366 pad->sbegy = sbegy; 367 pad->sbegx = sbegx; 368 pad->smaxy = smaxy; 369 pad->smaxx = smaxx; 370 371 /* Use pnoutrefresh() to avoid duplicating code here */ 372 retval = pnoutrefresh(pad, pbegy, pbegx, sbegy, sbegx, smaxy, smaxx); 373 if (retval == OK) { 374 retval = doupdate(); 375 if (!(pad->flags & __LEAVEOK)) { 376 pad->cury = max(0, curscr->cury - pad->begy); 377 pad->curx = max(0, curscr->curx - pad->begx); 378 } 379 } 380 return(retval); 381 } 382 383 /* 384 * doupdate -- 385 * Make the current screen look like the virtual window "__virtscr". 386 */ 387 int 388 doupdate(void) 389 { 390 WINDOW *win; 391 __LINE *wlp; 392 short wy; 393 int dnum; 394 #ifdef HAVE_WCHAR 395 __LDATA *lp; 396 nschar_t *np; 397 int x; 398 #endif /* HAVE_WCHAR */ 399 400 /* Check if we need to restart ... */ 401 if (_cursesi_screen->endwin) 402 __restartwin(); 403 404 if (_cursesi_screen->curwin) 405 win = curscr; 406 else 407 win = _cursesi_screen->__virtscr; 408 409 /* Initialize loop parameters. */ 410 _cursesi_screen->ly = curscr->cury; 411 _cursesi_screen->lx = curscr->curx; 412 wy = 0; 413 414 if (!_cursesi_screen->curwin) { 415 for (wy = 0; wy < win->maxy; wy++) { 416 wlp = win->lines[wy]; 417 if (wlp->flags & __ISDIRTY) { 418 #ifndef HAVE_WCHAR 419 wlp->hash = __hash(wlp->line, 420 (size_t)(win->maxx * __LDATASIZE)); 421 #else 422 wlp->hash = 0; 423 for ( x = 0; x < win->maxx; x++ ) { 424 lp = &wlp->line[ x ]; 425 wlp->hash = __hash_more( &lp->ch, 426 sizeof( wchar_t ), wlp->hash ); 427 wlp->hash = __hash_more( &lp->attr, 428 sizeof( attr_t ), wlp->hash ); 429 np = lp->nsp; 430 if (np) { 431 while ( np ) { 432 wlp->hash 433 = __hash_more( 434 &np->ch, 435 sizeof(wchar_t), 436 wlp->hash ); 437 np = np->next; 438 } 439 } 440 } 441 #endif /* HAVE_WCHAR */ 442 } 443 } 444 } 445 446 if ((win->flags & __CLEAROK) || (curscr->flags & __CLEAROK) || 447 _cursesi_screen->curwin) { 448 if (curscr->wattr & __COLOR) 449 __unsetattr(0); 450 tputs(__tc_cl, 0, __cputchar); 451 _cursesi_screen->ly = 0; 452 _cursesi_screen->lx = 0; 453 if (!_cursesi_screen->curwin) { 454 curscr->flags &= ~__CLEAROK; 455 curscr->cury = 0; 456 curscr->curx = 0; 457 werase(curscr); 458 } 459 __touchwin(win); 460 win->flags &= ~__CLEAROK; 461 } 462 if (!__CA) { 463 if (win->curx != 0) 464 __cputchar('\n'); 465 if (!_cursesi_screen->curwin) 466 werase(curscr); 467 } 468 #ifdef DEBUG 469 __CTRACE(__CTRACE_REFRESH, "doupdate: (%p): curwin = %d\n", win, 470 _cursesi_screen->curwin); 471 __CTRACE(__CTRACE_REFRESH, "doupdate: \tfirstch\tlastch\n"); 472 #endif 473 474 if (!_cursesi_screen->curwin) { 475 /* 476 * Invoke quickch() only if more than a quarter of the lines 477 * in the window are dirty. 478 */ 479 for (wy = 0, dnum = 0; wy < win->maxy; wy++) 480 if (win->lines[wy]->flags & __ISDIRTY) 481 dnum++; 482 if (!__noqch && dnum > (int) win->maxy / 4) 483 quickch(); 484 } 485 486 #ifdef DEBUG 487 { 488 int i, j; 489 490 __CTRACE(__CTRACE_REFRESH, 491 "#####################################\n"); 492 __CTRACE(__CTRACE_REFRESH, 493 "stdscr(%p)-curscr(%p)-__virtscr(%p)\n", 494 stdscr, curscr, _cursesi_screen->__virtscr); 495 for (i = 0; i < curscr->maxy; i++) { 496 __CTRACE(__CTRACE_REFRESH, "C: %d:", i); 497 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", 498 curscr->lines[i]->hash); 499 for (j = 0; j < curscr->maxx; j++) 500 __CTRACE(__CTRACE_REFRESH, "%c", 501 curscr->lines[i]->line[j].ch); 502 __CTRACE(__CTRACE_REFRESH, "\n"); 503 __CTRACE(__CTRACE_REFRESH, " attr:"); 504 for (j = 0; j < curscr->maxx; j++) 505 __CTRACE(__CTRACE_REFRESH, " %x", 506 curscr->lines[i]->line[j].attr); 507 __CTRACE(__CTRACE_REFRESH, "\n"); 508 __CTRACE(__CTRACE_REFRESH, "W: %d:", i); 509 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", 510 win->lines[i]->hash); 511 __CTRACE(__CTRACE_REFRESH, " 0x%x ", 512 win->lines[i]->flags); 513 for (j = 0; j < win->maxx; j++) 514 __CTRACE(__CTRACE_REFRESH, "%c", 515 win->lines[i]->line[j].ch); 516 __CTRACE(__CTRACE_REFRESH, "\n"); 517 __CTRACE(__CTRACE_REFRESH, " attr:"); 518 for (j = 0; j < win->maxx; j++) 519 __CTRACE(__CTRACE_REFRESH, " %x", 520 win->lines[i]->line[j].attr); 521 __CTRACE(__CTRACE_REFRESH, "\n"); 522 #ifdef HAVE_WCHAR 523 __CTRACE(__CTRACE_REFRESH, " nsp:"); 524 for (j = 0; j < curscr->maxx; j++) 525 __CTRACE(__CTRACE_REFRESH, " %p", 526 win->lines[i]->line[j].nsp); 527 __CTRACE(__CTRACE_REFRESH, "\n"); 528 __CTRACE(__CTRACE_REFRESH, " bnsp:"); 529 for (j = 0; j < curscr->maxx; j++) 530 __CTRACE(__CTRACE_REFRESH, " %p", 531 win->bnsp); 532 __CTRACE(__CTRACE_REFRESH, "\n"); 533 #endif /* HAVE_WCHAR */ 534 } 535 } 536 #endif /* DEBUG */ 537 538 for (wy = 0; wy < win->maxy; wy++) { 539 wlp = win->lines[wy]; 540 /* XXX: remove this debug */ 541 #ifdef DEBUG 542 __CTRACE(__CTRACE_REFRESH, 543 "doupdate: wy %d\tf: %d\tl:%d\tflags %x\n", 544 wy, *wlp->firstchp, *wlp->lastchp, wlp->flags); 545 #endif /* DEBUG */ 546 if (!_cursesi_screen->curwin) 547 curscr->lines[wy]->hash = wlp->hash; 548 if (wlp->flags & __ISDIRTY) { 549 #ifdef DEBUG 550 __CTRACE(__CTRACE_REFRESH, 551 "doupdate: [ISDIRTY]wy:%d\tf:%d\tl:%d\n", wy, 552 *wlp->firstchp, *wlp->lastchp); 553 #endif /* DEBUG */ 554 if (makech(wy) == ERR) 555 return (ERR); 556 else { 557 if (*wlp->firstchp >= 0) 558 *wlp->firstchp = win->maxx; 559 if (*wlp->lastchp < win->maxx) 560 *wlp->lastchp = 0; 561 if (*wlp->lastchp < *wlp->firstchp) { 562 #ifdef DEBUG 563 __CTRACE(__CTRACE_REFRESH, 564 "doupdate: line %d notdirty\n", wy); 565 #endif /* DEBUG */ 566 wlp->flags &= ~__ISDIRTY; 567 } 568 } 569 570 } 571 #ifdef DEBUG 572 __CTRACE(__CTRACE_REFRESH, "\t%d\t%d\n", 573 *wlp->firstchp, *wlp->lastchp); 574 #endif /* DEBUG */ 575 } 576 577 #ifdef DEBUG 578 __CTRACE(__CTRACE_REFRESH, "doupdate: ly=%d, lx=%d\n", 579 _cursesi_screen->ly, _cursesi_screen->lx); 580 #endif /* DEBUG */ 581 582 if (_cursesi_screen->curwin) 583 domvcur(_cursesi_screen->ly, _cursesi_screen->lx, 584 (int) win->cury, (int) win->curx); 585 else { 586 if (win->flags & __LEAVEOK) { 587 curscr->cury = _cursesi_screen->ly; 588 curscr->curx = _cursesi_screen->lx; 589 } else { 590 domvcur(_cursesi_screen->ly, _cursesi_screen->lx, 591 win->cury, win->curx); 592 curscr->cury = win->cury; 593 curscr->curx = win->curx; 594 } 595 } 596 597 /* Don't leave the screen with attributes set. */ 598 __unsetattr(0); 599 #ifdef DEBUG 600 #ifdef HAVE_WCHAR 601 { 602 int i, j; 603 604 __CTRACE(__CTRACE_REFRESH, 605 "***********after*****************\n"); 606 __CTRACE(__CTRACE_REFRESH, 607 "stdscr(%p)-curscr(%p)-__virtscr(%p)\n", 608 stdscr, curscr, _cursesi_screen->__virtscr); 609 for (i = 0; i < curscr->maxy; i++) { 610 for (j = 0; j < curscr->maxx; j++) 611 __CTRACE(__CTRACE_REFRESH, 612 "[%d,%d](%x,%x,%p)-(%x,%x,%p)\n", 613 i, j, 614 curscr->lines[i]->line[j].ch, 615 curscr->lines[i]->line[j].attr, 616 curscr->lines[i]->line[j].nsp, 617 _cursesi_screen->__virtscr->lines[i]->line[j].ch, 618 _cursesi_screen->__virtscr->lines[i]->line[j].attr, 619 _cursesi_screen->__virtscr->lines[i]->line[j].nsp); 620 } 621 } 622 #endif /* HAVE_WCHAR */ 623 #endif /* DEBUG */ 624 return fflush(_cursesi_screen->outfd) == EOF ? ERR : OK; 625 } 626 627 /* 628 * makech -- 629 * Make a change on the screen. 630 */ 631 static int 632 makech(int wy) 633 { 634 WINDOW *win; 635 static __LDATA blank; 636 __LDATA *nsp, *csp, *cp, *cep; 637 size_t clsp, nlsp; /* Last space in lines. */ 638 int lch, wx; 639 char *ce; 640 attr_t lspc; /* Last space colour */ 641 attr_t off, on; 642 643 #ifdef __GNUC__ 644 nlsp = lspc = 0; /* XXX gcc -Wuninitialized */ 645 #endif 646 if (_cursesi_screen->curwin) 647 win = curscr; 648 else 649 win = __virtscr; 650 #ifdef HAVE_WCHAR 651 blank.ch = ( wchar_t )btowc(( int ) win->bch ); 652 blank.attr = 0; 653 if (_cursesi_copy_nsp(win->bnsp, &blank) == ERR) 654 return ERR; 655 SET_WCOL( blank, 1 ); 656 #endif /* HAVE_WCHAR */ 657 #ifdef DEBUG 658 #if HAVE_WCHAR 659 { 660 int x; 661 __LDATA *lp, *vlp; 662 663 __CTRACE(__CTRACE_REFRESH, 664 "[makech-before]wy=%d,curscr(%p)-__virtscr(%p)\n", 665 wy, curscr, __virtscr); 666 for (x = 0; x < curscr->maxx; x++) { 667 lp = &curscr->lines[wy]->line[x]; 668 vlp = &__virtscr->lines[wy]->line[x]; 669 __CTRACE(__CTRACE_REFRESH, 670 "[%d,%d](%x,%x,%x,%x,%p)-" 671 "(%x,%x,%x,%x,%p)\n", 672 wy, x, lp->ch, lp->attr, 673 win->bch, win->battr, lp->nsp, 674 vlp->ch, vlp->attr, 675 win->bch, win->battr, vlp->nsp); 676 } 677 } 678 #endif /* HAVE_WCHAR */ 679 #endif /* DEBUG */ 680 /* Is the cursor still on the end of the last line? */ 681 if (wy > 0 && curscr->lines[wy - 1]->flags & __ISPASTEOL) { 682 domvcur(_cursesi_screen->ly, _cursesi_screen->lx, 683 _cursesi_screen->ly + 1, 0); 684 _cursesi_screen->ly++; 685 _cursesi_screen->lx = 0; 686 } 687 wx = *win->lines[wy]->firstchp; 688 if (wx < 0) 689 wx = 0; 690 else 691 if (wx >= win->maxx) 692 return (OK); 693 lch = *win->lines[wy]->lastchp; 694 if (lch < 0) 695 return (OK); 696 else 697 if (lch >= (int) win->maxx) 698 lch = win->maxx - 1; 699 700 if (_cursesi_screen->curwin) { 701 csp = ␣ 702 #ifdef DEBUG 703 __CTRACE(__CTRACE_REFRESH, "makech: csp is blank\n"); 704 #endif /* DEBUG */ 705 } else { 706 csp = &curscr->lines[wy]->line[wx]; 707 #ifdef DEBUG 708 __CTRACE(__CTRACE_REFRESH, 709 "makech: csp is on curscr:(%d,%d)\n", wy, wx); 710 #endif /* DEBUG */ 711 } 712 713 nsp = &win->lines[wy]->line[wx]; 714 #ifdef DEBUG 715 if ( _cursesi_screen->curwin ) 716 __CTRACE(__CTRACE_REFRESH, 717 "makech: nsp is at curscr:(%d,%d)\n", wy, wx); 718 else 719 __CTRACE(__CTRACE_REFRESH, 720 "makech: nsp is at __virtscr:(%d,%d)\n", wy, wx); 721 #endif /* DEBUG */ 722 if (__tc_ce && !_cursesi_screen->curwin) { 723 cp = &win->lines[wy]->line[win->maxx - 1]; 724 lspc = cp->attr & __COLOR; 725 #ifndef HAVE_WCHAR 726 while (cp->ch == ' ' && cp->attr == lspc) /* XXX */ 727 if (cp-- <= win->lines[wy]->line) 728 break; 729 #else 730 while (cp->ch == ( wchar_t )btowc(( int )' ' ) 731 && ( cp->attr & WA_ATTRIBUTES ) == lspc) 732 if (cp-- <= win->lines[wy]->line) 733 break; 734 #endif /* HAVE_WCHAR */ 735 if (win->lines[wy]->line > cp) 736 nlsp = 0; 737 else 738 nlsp = cp - win->lines[wy]->line; 739 } 740 if (!_cursesi_screen->curwin) 741 ce = __tc_ce; 742 else 743 ce = NULL; 744 745 while (wx <= lch) { 746 #ifdef DEBUG 747 __CTRACE(__CTRACE_REFRESH, "makech: wx=%d,lch=%d\n", wx, lch); 748 #endif /* DEBUG */ 749 #ifndef HAVE_WCHAR 750 if (memcmp(nsp, csp, sizeof(__LDATA)) == 0) { 751 if (wx <= lch) { 752 while (wx <= lch && 753 memcmp(nsp, csp, sizeof(__LDATA)) == 0) { 754 nsp++; 755 if (!_cursesi_screen->curwin) 756 ++csp; 757 ++wx; 758 } 759 continue; 760 } 761 break; 762 } 763 #else 764 #ifdef DEBUG 765 __CTRACE(__CTRACE_REFRESH, "makech: nsp=(%x,%x,%x,%x,%p)\n", 766 nsp->ch, nsp->attr, win->bch, win->battr, nsp->nsp); 767 __CTRACE(__CTRACE_REFRESH, "makech: csp=(%x,%x,%x,%x,%p)\n", 768 csp->ch, csp->attr, win->bch, win->battr, csp->nsp); 769 #endif /* DEBUG */ 770 if (((nsp->attr & __WCWIDTH) != __WCWIDTH) && 771 cellcmp(nsp, csp)) { 772 if (wx <= lch) { 773 while (wx <= lch && cellcmp( csp, nsp )) { 774 nsp++; 775 if (!_cursesi_screen->curwin) 776 ++csp; 777 ++wx; 778 } 779 continue; 780 } 781 break; 782 } 783 #endif /* HAVE_WCHAR */ 784 domvcur(_cursesi_screen->ly, _cursesi_screen->lx, wy, wx); 785 786 #ifdef DEBUG 787 __CTRACE(__CTRACE_REFRESH, "makech: 1: wx = %d, ly= %d, " 788 "lx = %d, newy = %d, newx = %d\n", 789 wx, _cursesi_screen->ly, _cursesi_screen->lx, wy, wx); 790 #endif 791 _cursesi_screen->ly = wy; 792 _cursesi_screen->lx = wx; 793 #ifndef HAVE_WCHAR 794 while (wx <= lch && memcmp(nsp, csp, sizeof(__LDATA)) != 0) { 795 if (ce != NULL && 796 wx >= nlsp && nsp->ch == ' ' && nsp->attr == lspc) { 797 /* Are we continuing a multircell character? */ 798 if ((nsp->attr & __WCWIDTH) == __WCWIDTH) { 799 #ifdef DEBUG 800 __CTRACE(__CTRACE_REFRESH, 801 "Skipping continuation cell\n"); 802 wx++; 803 csp->ch = nsp->ch; 804 csp->attr = nsp->attr; 805 nsp++; 806 csp++; 807 continue; 808 } 809 #endif 810 #else 811 while (!cellcmp(nsp, csp) && wx <= lch) { 812 if (ce != NULL && wx >= nlsp 813 && nsp->ch == (wchar_t)btowc((int)' ') /* XXX */ 814 && (nsp->attr & WA_ATTRIBUTES) == lspc) { 815 816 #endif 817 /* Check for clear to end-of-line. */ 818 cep = &curscr->lines[wy]->line[win->maxx - 1]; 819 #ifndef HAVE_WCHAR 820 while (cep->ch == ' ' && cep->attr == lspc) /* XXX */ 821 #else 822 while (cep->ch == (wchar_t)btowc((int)' ') 823 && (cep->attr & WA_ATTRIBUTES) == lspc) 824 #endif /* HAVE_WCHAR */ 825 if (cep-- <= csp) 826 break; 827 clsp = cep - curscr->lines[wy]->line - 828 win->begx * __LDATASIZE; 829 #ifdef DEBUG 830 __CTRACE(__CTRACE_REFRESH, 831 "makech: clsp = %zu, nlsp = %zu\n", 832 clsp, nlsp); 833 #endif 834 if (((clsp - nlsp >= strlen(__tc_ce) && 835 clsp < win->maxx * __LDATASIZE) || 836 wy == win->maxy - 1) && 837 (!(lspc & __COLOR) || 838 ((lspc & __COLOR) && __tc_ut))) { 839 __unsetattr(0); 840 if (__using_color && 841 ((lspc & __COLOR) != 842 (curscr->wattr & __COLOR))) 843 __set_color(curscr, lspc & 844 __COLOR); 845 tputs(__tc_ce, 0, __cputchar); 846 _cursesi_screen->lx = wx + win->begx; 847 while (wx++ <= clsp) { 848 csp->attr = lspc; 849 #ifndef HAVE_WCHAR 850 csp->ch = ' '; /* XXX */ 851 #else 852 csp->ch = (wchar_t)btowc((int)' '); 853 SET_WCOL( *csp, 1 ); 854 #endif /* HAVE_WCHAR */ 855 csp++; 856 } 857 return (OK); 858 } 859 ce = NULL; 860 } 861 862 #ifdef DEBUG 863 __CTRACE(__CTRACE_REFRESH, 864 "makech: have attr %08x, need attr %08x\n", 865 curscr->wattr & WA_ATTRIBUTES, 866 nsp->attr & WA_ATTRIBUTES); 867 #endif 868 869 off = (~nsp->attr & curscr->wattr) & WA_ATTRIBUTES; 870 871 /* 872 * Unset attributes as appropriate. Unset first 873 * so that the relevant attributes can be reset 874 * (because 'me' unsets 'mb', 'md', 'mh', 'mk', 875 * 'mp' and 'mr'). Check to see if we also turn off 876 * standout, attributes and colour. 877 */ 878 if (off & __TERMATTR && __tc_me != NULL) { 879 tputs(__tc_me, 0, __cputchar); 880 curscr->wattr &= __mask_me; 881 off &= __mask_me; 882 } 883 884 /* 885 * Exit underscore mode if appropriate. 886 * Check to see if we also turn off standout, 887 * attributes and colour. 888 */ 889 if (off & __UNDERSCORE && __tc_ue != NULL) { 890 tputs(__tc_ue, 0, __cputchar); 891 curscr->wattr &= __mask_ue; 892 off &= __mask_ue; 893 } 894 895 /* 896 * Exit standout mode as appropriate. 897 * Check to see if we also turn off underscore, 898 * attributes and colour. 899 * XXX 900 * Should use uc if so/se not available. 901 */ 902 if (off & __STANDOUT && __tc_se != NULL) { 903 tputs(__tc_se, 0, __cputchar); 904 curscr->wattr &= __mask_se; 905 off &= __mask_se; 906 } 907 908 #ifndef HAVE_WCHAR 909 if (off & __ALTCHARSET && __tc_ae != NULL) { 910 tputs(__tc_ae, 0, __cputchar); 911 curscr->wattr &= ~__ALTCHARSET; 912 } 913 #else 914 if (off & WA_ALTCHARSET && __tc_ae != NULL) { 915 tputs(__tc_ae, 0, __cputchar); 916 curscr->wattr &= ~WA_ALTCHARSET; 917 } 918 #endif /* HAVE_WCHAR */ 919 920 /* Set/change colour as appropriate. */ 921 if (__using_color) 922 __set_color(curscr, nsp->attr & __COLOR); 923 924 on = (nsp->attr & ~curscr->wattr) & WA_ATTRIBUTES; 925 926 /* 927 * Enter standout mode if appropriate. 928 */ 929 if (on & __STANDOUT && __tc_so != NULL && __tc_se 930 != NULL) { 931 tputs(__tc_so, 0, __cputchar); 932 curscr->wattr |= __STANDOUT; 933 } 934 935 /* 936 * Enter underscore mode if appropriate. 937 * XXX 938 * Should use uc if us/ue not available. 939 */ 940 if (on & __UNDERSCORE && __tc_us != NULL && 941 __tc_ue != NULL) { 942 tputs(__tc_us, 0, __cputchar); 943 curscr->wattr |= __UNDERSCORE; 944 } 945 946 /* 947 * Set other attributes as appropriate. 948 */ 949 if (__tc_me != NULL) { 950 if (on & __BLINK && __tc_mb != NULL) { 951 tputs(__tc_mb, 0, __cputchar); 952 curscr->wattr |= __BLINK; 953 } 954 if (on & __BOLD && __tc_md != NULL) { 955 tputs(__tc_md, 0, __cputchar); 956 curscr->wattr |= __BOLD; 957 } 958 if (on & __DIM && __tc_mh != NULL) { 959 tputs(__tc_mh, 0, __cputchar); 960 curscr->wattr |= __DIM; 961 } 962 if (on & __BLANK && __tc_mk != NULL) { 963 tputs(__tc_mk, 0, __cputchar); 964 curscr->wattr |= __BLANK; 965 } 966 if (on & __PROTECT && __tc_mp != NULL) { 967 tputs(__tc_mp, 0, __cputchar); 968 curscr->wattr |= __PROTECT; 969 } 970 if (on & __REVERSE && __tc_mr != NULL) { 971 tputs(__tc_mr, 0, __cputchar); 972 curscr->wattr |= __REVERSE; 973 } 974 #ifdef HAVE_WCHAR 975 if (on & WA_TOP && __tc_Xt != NULL) { 976 tputs(__tc_Xt, 0, __cputchar); 977 curscr->wattr |= WA_TOP; 978 } 979 if (on & WA_LOW && __tc_Xo != NULL) { 980 tputs(__tc_Xo, 0, __cputchar); 981 curscr->wattr |= WA_LOW; 982 } 983 if (on & WA_LEFT && __tc_Xl != NULL) { 984 tputs(__tc_Xl, 0, __cputchar); 985 curscr->wattr |= WA_LEFT; 986 } 987 if (on & WA_RIGHT && __tc_Xl != NULL) { 988 tputs(__tc_Xl, 0, __cputchar); 989 curscr->wattr |= WA_RIGHT; 990 } 991 if (on & WA_HORIZONTAL && __tc_Xh != NULL) { 992 tputs(__tc_Xh, 0, __cputchar); 993 curscr->wattr |= WA_HORIZONTAL; 994 } 995 if (on & WA_VERTICAL && __tc_Xv != NULL) { 996 tputs(__tc_Xv, 0, __cputchar); 997 curscr->wattr |= WA_VERTICAL; 998 } 999 #endif /* HAVE_WCHAR */ 1000 } 1001 1002 /* Enter/exit altcharset mode as appropriate. */ 1003 #ifndef HAVE_WCHAR 1004 if (on & __ALTCHARSET && __tc_as != NULL && 1005 __tc_ae != NULL) { 1006 tputs(__tc_as, 0, __cputchar); 1007 curscr->wattr |= __ALTCHARSET; 1008 } 1009 #else 1010 if (on & WA_ALTCHARSET && __tc_as != NULL && 1011 __tc_ae != NULL) { 1012 tputs(__tc_as, 0, __cputchar); 1013 curscr->wattr |= WA_ALTCHARSET; 1014 } 1015 #endif /* HAVE_WCHAR */ 1016 1017 wx++; 1018 if (wx >= win->maxx && 1019 wy == win->maxy - 1 && !_cursesi_screen->curwin) { 1020 if (win->flags & __SCROLLOK) { 1021 if (win->flags & __ENDLINE) 1022 __unsetattr(1); 1023 if (!(win->flags & __SCROLLWIN)) { 1024 if (!_cursesi_screen->curwin) { 1025 csp->attr = nsp->attr; 1026 csp->ch = nsp->ch; 1027 #ifdef HAVE_WCHAR 1028 if (_cursesi_copy_nsp(nsp->nsp, csp) == ERR) 1029 return ERR; 1030 #endif /* HAVE_WCHAR */ 1031 } 1032 #ifndef HAVE_WCHAR 1033 __cputchar((int) nsp->ch); 1034 #else 1035 if ( WCOL( *nsp ) > 0 ) { 1036 __cputwchar((int)nsp->ch); 1037 #ifdef DEBUG 1038 __CTRACE(__CTRACE_REFRESH, 1039 "makech: (%d,%d)putwchar(0x%x)\n", 1040 wy, wx - 1, 1041 nsp->ch ); 1042 #endif /* DEBUG */ 1043 /* 1044 * Output non-spacing 1045 * characters for the 1046 * cell. 1047 */ 1048 __cursesi_putnsp(nsp->nsp, 1049 wy, wx); 1050 1051 } 1052 #endif /* HAVE_WCHAR */ 1053 } 1054 if (wx < curscr->maxx) { 1055 domvcur(_cursesi_screen->ly, wx, 1056 (int) (win->maxy - 1), 1057 (int) (win->maxx - 1)); 1058 } 1059 _cursesi_screen->ly = win->maxy - 1; 1060 _cursesi_screen->lx = win->maxx - 1; 1061 return (OK); 1062 } 1063 } 1064 if (wx < win->maxx || wy < win->maxy - 1 || 1065 !(win->flags & __SCROLLWIN)) { 1066 if (!_cursesi_screen->curwin) { 1067 csp->attr = nsp->attr; 1068 csp->ch = nsp->ch; 1069 #ifdef HAVE_WCHAR 1070 if (_cursesi_copy_nsp(nsp->nsp, 1071 csp) == ERR) 1072 return ERR; 1073 #endif /* HAVE_WCHAR */ 1074 csp++; 1075 } 1076 #ifndef HAVE_WCHAR 1077 __cputchar((int) nsp->ch); 1078 #ifdef DEBUG 1079 __CTRACE(__CTRACE_REFRESH, 1080 "makech: putchar(%c)\n", nsp->ch & 0177); 1081 #endif 1082 #else 1083 if (WCOL(*nsp) > 0) { 1084 __cputwchar((int) nsp->ch); 1085 #ifdef DEBUG 1086 __CTRACE(__CTRACE_REFRESH, 1087 "makech:(%d,%d) putwchar(%x)\n", 1088 wy, wx - 1, nsp->ch); 1089 __cursesi_putnsp(nsp->nsp, wy, wx); 1090 #endif /* DEBUG */ 1091 } 1092 #endif /* HAVE_WCHAR */ 1093 } 1094 if (__tc_uc && ((nsp->attr & __STANDOUT) || 1095 (nsp->attr & __UNDERSCORE))) { 1096 __cputchar('\b'); 1097 tputs(__tc_uc, 0, __cputchar); 1098 } 1099 nsp++; 1100 #ifdef DEBUG 1101 __CTRACE(__CTRACE_REFRESH, 1102 "makech: 2: wx = %d, lx = %d\n", 1103 wx, _cursesi_screen->lx); 1104 #endif 1105 } 1106 if (_cursesi_screen->lx == wx) /* If no change. */ 1107 break; 1108 _cursesi_screen->lx = wx; 1109 if (_cursesi_screen->lx >= COLS && __tc_am) 1110 _cursesi_screen->lx = COLS - 1; 1111 else 1112 if (wx >= win->maxx) { 1113 domvcur(_cursesi_screen->ly, 1114 _cursesi_screen->lx, 1115 _cursesi_screen->ly, 1116 (int) (win->maxx - 1)); 1117 _cursesi_screen->lx = win->maxx - 1; 1118 } 1119 #ifdef DEBUG 1120 __CTRACE(__CTRACE_REFRESH, "makech: 3: wx = %d, lx = %d\n", 1121 wx, _cursesi_screen->lx); 1122 #endif 1123 } 1124 #ifdef DEBUG 1125 #if HAVE_WCHAR 1126 { 1127 int x; 1128 __LDATA *lp, *vlp; 1129 1130 __CTRACE(__CTRACE_REFRESH, 1131 "makech-after: curscr(%p)-__virtscr(%p)\n", 1132 curscr, __virtscr ); 1133 for (x = 0; x < curscr->maxx; x++) { 1134 lp = &curscr->lines[wy]->line[x]; 1135 vlp = &__virtscr->lines[wy]->line[x]; 1136 __CTRACE(__CTRACE_REFRESH, 1137 "[%d,%d](%x,%x,%x,%x,%p)-" 1138 "(%x,%x,%x,%x,%p)\n", 1139 wy, x, lp->ch, lp->attr, 1140 win->bch, win->battr, lp->nsp, 1141 vlp->ch, vlp->attr, 1142 win->bch, win->battr, vlp->nsp); 1143 } 1144 } 1145 #endif /* HAVE_WCHAR */ 1146 #endif /* DEBUG */ 1147 1148 return (OK); 1149 } 1150 1151 /* 1152 * domvcur -- 1153 * Do a mvcur, leaving attributes if necessary. 1154 */ 1155 static void 1156 domvcur(oy, ox, ny, nx) 1157 int oy, ox, ny, nx; 1158 { 1159 #ifdef DEBUG 1160 __CTRACE(__CTRACE_REFRESH, "domvcur: (%x,%d)=>(%d,%d)\n", 1161 oy, ox, ny, nx ); 1162 #endif /* DEBUG */ 1163 __unsetattr(1); 1164 if ( oy == ny && ox == nx ) 1165 return; 1166 __mvcur(oy, ox, ny, nx, 1); 1167 } 1168 1169 /* 1170 * Quickch() attempts to detect a pattern in the change of the window 1171 * in order to optimize the change, e.g., scroll n lines as opposed to 1172 * repainting the screen line by line. 1173 */ 1174 1175 static __LDATA buf[128]; 1176 static u_int last_hash; 1177 static size_t last_hash_len; 1178 #define BLANKSIZE (sizeof(buf) / sizeof(buf[0])) 1179 1180 static void 1181 quickch(void) 1182 { 1183 #define THRESH (int) __virtscr->maxy / 4 1184 1185 __LINE *clp, *tmp1, *tmp2; 1186 int bsize, curs, curw, starts, startw, i, j; 1187 int n, target, cur_period, bot, top, sc_region; 1188 u_int blank_hash; 1189 attr_t bcolor; 1190 1191 #ifdef __GNUC__ 1192 curs = curw = starts = startw = 0; /* XXX gcc -Wuninitialized */ 1193 #endif 1194 /* 1195 * Find how many lines from the top of the screen are unchanged. 1196 */ 1197 for (top = 0; top < __virtscr->maxy; top++) 1198 #ifndef HAVE_WCHAR 1199 if (__virtscr->lines[top]->flags & __ISDIRTY && 1200 (__virtscr->lines[top]->hash != curscr->lines[top]->hash || 1201 memcmp(__virtscr->lines[top]->line, 1202 curscr->lines[top]->line, 1203 (size_t) __virtscr->maxx * __LDATASIZE) 1204 != 0)) 1205 break; 1206 #else 1207 if (__virtscr->lines[top]->flags & __ISDIRTY && 1208 (__virtscr->lines[top]->hash != curscr->lines[top]->hash || 1209 !linecmp(__virtscr->lines[top]->line, 1210 curscr->lines[top]->line, 1211 (size_t) __virtscr->maxx ))) 1212 break; 1213 #endif /* HAVE_WCHAR */ 1214 else 1215 __virtscr->lines[top]->flags &= ~__ISDIRTY; 1216 /* 1217 * Find how many lines from bottom of screen are unchanged. 1218 */ 1219 for (bot = __virtscr->maxy - 1; bot >= 0; bot--) 1220 #ifndef HAVE_WCHAR 1221 if (__virtscr->lines[bot]->flags & __ISDIRTY && 1222 (__virtscr->lines[bot]->hash != curscr->lines[bot]->hash || 1223 memcmp(__virtscr->lines[bot]->line, 1224 curscr->lines[bot]->line, 1225 (size_t) __virtscr->maxx * __LDATASIZE) 1226 != 0)) 1227 break; 1228 #else 1229 if (__virtscr->lines[bot]->flags & __ISDIRTY && 1230 (__virtscr->lines[bot]->hash != curscr->lines[bot]->hash || 1231 !linecmp(__virtscr->lines[bot]->line, 1232 curscr->lines[bot]->line, 1233 (size_t) __virtscr->maxx ))) 1234 break; 1235 #endif /* HAVE_WCHAR */ 1236 else 1237 __virtscr->lines[bot]->flags &= ~__ISDIRTY; 1238 1239 /* 1240 * Work round an xterm bug where inserting lines causes all the 1241 * inserted lines to be covered with the background colour we 1242 * set on the first line (even if we unset it for subsequent 1243 * lines). 1244 */ 1245 bcolor = __virtscr->lines[min(top, 1246 __virtscr->maxy - 1)]->line[0].attr & __COLOR; 1247 for (i = top + 1, j = 0; i < bot; i++) { 1248 if ((__virtscr->lines[i]->line[0].attr & __COLOR) != bcolor) { 1249 bcolor = __virtscr->lines[i]->line[__virtscr->maxx]. 1250 attr & __COLOR; 1251 j = i - top; 1252 } else 1253 break; 1254 } 1255 top += j; 1256 1257 #ifdef NO_JERKINESS 1258 /* 1259 * If we have a bottom unchanged region return. Scrolling the 1260 * bottom region up and then back down causes a screen jitter. 1261 * This will increase the number of characters sent to the screen 1262 * but it looks better. 1263 */ 1264 if (bot < __virtscr->maxy - 1) 1265 return; 1266 #endif /* NO_JERKINESS */ 1267 1268 /* 1269 * Search for the largest block of text not changed. 1270 * Invariants of the loop: 1271 * - Startw is the index of the beginning of the examined block in 1272 * __virtscr. 1273 * - Starts is the index of the beginning of the examined block in 1274 * curscr. 1275 * - Curw is the index of one past the end of the exmined block in 1276 * __virtscr. 1277 * - Curs is the index of one past the end of the exmined block in 1278 * curscr. 1279 * - bsize is the current size of the examined block. 1280 */ 1281 1282 for (bsize = bot - top; bsize >= THRESH; bsize--) { 1283 for (startw = top; startw <= bot - bsize; startw++) 1284 for (starts = top; starts <= bot - bsize; 1285 starts++) { 1286 for (curw = startw, curs = starts; 1287 curs < starts + bsize; curw++, curs++) 1288 if (__virtscr->lines[curw]->hash != 1289 curscr->lines[curs]->hash) 1290 break; 1291 if (curs != starts + bsize) 1292 continue; 1293 for (curw = startw, curs = starts; 1294 curs < starts + bsize; curw++, curs++) 1295 #ifndef HAVE_WCHAR 1296 if (memcmp(__virtscr->lines[curw]->line, 1297 curscr->lines[curs]->line, 1298 (size_t) __virtscr->maxx * 1299 __LDATASIZE) != 0) 1300 break; 1301 #else 1302 if (!linecmp(__virtscr->lines[curw]->line, 1303 curscr->lines[curs]->line, 1304 (size_t) __virtscr->maxx)) 1305 break; 1306 #endif /* HAVE_WCHAR */ 1307 if (curs == starts + bsize) 1308 goto done; 1309 } 1310 } 1311 done: 1312 1313 /* Did not find anything */ 1314 if (bsize < THRESH) 1315 return; 1316 1317 #ifdef DEBUG 1318 __CTRACE(__CTRACE_REFRESH, "quickch:bsize=%d, starts=%d, startw=%d, " 1319 "curw=%d, curs=%d, top=%d, bot=%d\n", 1320 bsize, starts, startw, curw, curs, top, bot); 1321 #endif 1322 1323 /* 1324 * Make sure that there is no overlap between the bottom and top 1325 * regions and the middle scrolled block. 1326 */ 1327 if (bot < curs) 1328 bot = curs - 1; 1329 if (top > starts) 1330 top = starts; 1331 1332 n = startw - starts; 1333 1334 #ifdef DEBUG 1335 __CTRACE(__CTRACE_REFRESH, "#####################################\n"); 1336 for (i = 0; i < curscr->maxy; i++) { 1337 __CTRACE(__CTRACE_REFRESH, "C: %d:", i); 1338 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", curscr->lines[i]->hash); 1339 for (j = 0; j < curscr->maxx; j++) 1340 __CTRACE(__CTRACE_REFRESH, "%c", 1341 curscr->lines[i]->line[j].ch); 1342 __CTRACE(__CTRACE_REFRESH, "\n"); 1343 __CTRACE(__CTRACE_REFRESH, " attr:"); 1344 for (j = 0; j < curscr->maxx; j++) 1345 __CTRACE(__CTRACE_REFRESH, " %x", 1346 curscr->lines[i]->line[j].attr); 1347 __CTRACE(__CTRACE_REFRESH, "\n"); 1348 __CTRACE(__CTRACE_REFRESH, "W: %d:", i); 1349 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", 1350 __virtscr->lines[i]->hash); 1351 __CTRACE(__CTRACE_REFRESH, " 0x%x ", 1352 __virtscr->lines[i]->flags); 1353 for (j = 0; j < __virtscr->maxx; j++) 1354 __CTRACE(__CTRACE_REFRESH, "%c", 1355 __virtscr->lines[i]->line[j].ch); 1356 __CTRACE(__CTRACE_REFRESH, "\n"); 1357 __CTRACE(__CTRACE_REFRESH, " attr:"); 1358 for (j = 0; j < __virtscr->maxx; j++) 1359 __CTRACE(__CTRACE_REFRESH, " %x", 1360 __virtscr->lines[i]->line[j].attr); 1361 __CTRACE(__CTRACE_REFRESH, "\n"); 1362 } 1363 #endif 1364 1365 #ifndef HAVE_WCHAR 1366 if (buf[0].ch != ' ') { 1367 for (i = 0; i < BLANKSIZE; i++) { 1368 buf[i].ch = ' '; 1369 buf[i].attr = 0; 1370 } 1371 } 1372 #else 1373 if (buf[0].ch != ( wchar_t )btowc(( int ) curscr->bch )) { 1374 for (i = 0; i < BLANKSIZE; i++) { 1375 buf[i].ch = ( wchar_t )btowc(( int ) curscr->bch ); 1376 if (_cursesi_copy_nsp(curscr->bnsp, &buf[i]) == ERR) 1377 return; 1378 buf[i].attr = 0; 1379 SET_WCOL( buf[ i ], 1 ); 1380 } 1381 } 1382 #endif /* HAVE_WCHAR */ 1383 1384 if (__virtscr->maxx != last_hash_len) { 1385 blank_hash = 0; 1386 for (i = __virtscr->maxx; i > BLANKSIZE; i -= BLANKSIZE) { 1387 blank_hash = __hash_more(buf, sizeof(buf), blank_hash); 1388 } 1389 blank_hash = __hash_more((char *)(void *)buf, 1390 i * sizeof(buf[0]), blank_hash); 1391 /* cache result in static data - screen width doesn't change often */ 1392 last_hash_len = __virtscr->maxx; 1393 last_hash = blank_hash; 1394 } else 1395 blank_hash = last_hash; 1396 1397 /* 1398 * Perform the rotation to maintain the consistency of curscr. 1399 * This is hairy since we are doing an *in place* rotation. 1400 * Invariants of the loop: 1401 * - I is the index of the current line. 1402 * - Target is the index of the target of line i. 1403 * - Tmp1 points to current line (i). 1404 * - Tmp2 and points to target line (target); 1405 * - Cur_period is the index of the end of the current period. 1406 * (see below). 1407 * 1408 * There are 2 major issues here that make this rotation non-trivial: 1409 * 1. Scrolling in a scrolling region bounded by the top 1410 * and bottom regions determined (whose size is sc_region). 1411 * 2. As a result of the use of the mod function, there may be a 1412 * period introduced, i.e., 2 maps to 4, 4 to 6, n-2 to 0, and 1413 * 0 to 2, which then causes all odd lines not to be rotated. 1414 * To remedy this, an index of the end ( = beginning) of the 1415 * current 'period' is kept, cur_period, and when it is reached, 1416 * the next period is started from cur_period + 1 which is 1417 * guaranteed not to have been reached since that would mean that 1418 * all records would have been reached. (think about it...). 1419 * 1420 * Lines in the rotation can have 3 attributes which are marked on the 1421 * line so that curscr is consistent with the visual screen. 1422 * 1. Not dirty -- lines inside the scrolled block, top region or 1423 * bottom region. 1424 * 2. Blank lines -- lines in the differential of the scrolling 1425 * region adjacent to top and bot regions 1426 * depending on scrolling direction. 1427 * 3. Dirty line -- all other lines are marked dirty. 1428 */ 1429 sc_region = bot - top + 1; 1430 i = top; 1431 tmp1 = curscr->lines[top]; 1432 cur_period = top; 1433 for (j = top; j <= bot; j++) { 1434 target = (i - top + n + sc_region) % sc_region + top; 1435 tmp2 = curscr->lines[target]; 1436 curscr->lines[target] = tmp1; 1437 /* Mark block as clean and blank out scrolled lines. */ 1438 clp = curscr->lines[target]; 1439 #ifdef DEBUG 1440 __CTRACE(__CTRACE_REFRESH, 1441 "quickch: n=%d startw=%d curw=%d i = %d target=%d ", 1442 n, startw, curw, i, target); 1443 #endif 1444 if ((target >= startw && target < curw) || target < top 1445 || target > bot) { 1446 #ifdef DEBUG 1447 __CTRACE(__CTRACE_REFRESH, " notdirty\n"); 1448 #endif 1449 __virtscr->lines[target]->flags &= ~__ISDIRTY; 1450 } else 1451 if ((n > 0 && target >= top && target < top + n) || 1452 (n < 0 && target <= bot && target > bot + n)) { 1453 #ifndef HAVE_WCHAR 1454 if (clp->hash != blank_hash || 1455 memcmp(clp->line, clp->line + 1, 1456 (__virtscr->maxx - 1) 1457 * __LDATASIZE) || 1458 memcmp(clp->line, buf, __LDATASIZE)) { 1459 #else 1460 if (clp->hash != blank_hash 1461 || linecmp(clp->line, clp->line + 1, 1462 (unsigned int) (__virtscr->maxx - 1)) 1463 || cellcmp(clp->line, buf)) { 1464 #endif /* HAVE_WCHAR */ 1465 for (i = __virtscr->maxx; 1466 i > BLANKSIZE; 1467 i -= BLANKSIZE) { 1468 (void) memcpy(clp->line + i - 1469 BLANKSIZE, buf, sizeof(buf)); 1470 } 1471 (void) memcpy(clp->line , buf, i * 1472 sizeof(buf[0])); 1473 #ifdef DEBUG 1474 __CTRACE(__CTRACE_REFRESH, 1475 " blanked out: dirty\n"); 1476 #endif 1477 clp->hash = blank_hash; 1478 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1479 } else { 1480 #ifdef DEBUG 1481 __CTRACE(__CTRACE_REFRESH, 1482 " -- blank line already: dirty\n"); 1483 #endif 1484 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1485 } 1486 } else { 1487 #ifdef DEBUG 1488 __CTRACE(__CTRACE_REFRESH, " -- dirty\n"); 1489 #endif 1490 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1491 } 1492 if (target == cur_period) { 1493 i = target + 1; 1494 tmp1 = curscr->lines[i]; 1495 cur_period = i; 1496 } else { 1497 tmp1 = tmp2; 1498 i = target; 1499 } 1500 } 1501 #ifdef DEBUG 1502 __CTRACE(__CTRACE_REFRESH, "$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n"); 1503 for (i = 0; i < curscr->maxy; i++) { 1504 __CTRACE(__CTRACE_REFRESH, "C: %d:", i); 1505 for (j = 0; j < curscr->maxx; j++) 1506 __CTRACE(__CTRACE_REFRESH, "%c", 1507 curscr->lines[i]->line[j].ch); 1508 __CTRACE(__CTRACE_REFRESH, "\n"); 1509 __CTRACE(__CTRACE_REFRESH, "W: %d:", i); 1510 for (j = 0; j < __virtscr->maxx; j++) 1511 __CTRACE(__CTRACE_REFRESH, "%c", 1512 __virtscr->lines[i]->line[j].ch); 1513 __CTRACE(__CTRACE_REFRESH, "\n"); 1514 } 1515 #endif 1516 if (n != 0) 1517 scrolln(starts, startw, curs, bot, top); 1518 } 1519 1520 /* 1521 * scrolln -- 1522 * Scroll n lines, where n is starts - startw. 1523 */ 1524 static void /* ARGSUSED */ 1525 scrolln(starts, startw, curs, bot, top) 1526 int starts, startw, curs, bot, top; 1527 { 1528 int i, oy, ox, n; 1529 1530 oy = curscr->cury; 1531 ox = curscr->curx; 1532 n = starts - startw; 1533 1534 /* 1535 * XXX 1536 * The initial tests that set __noqch don't let us reach here unless 1537 * we have either cs + ho + SF/sf/SR/sr, or AL + DL. SF/sf and SR/sr 1538 * scrolling can only shift the entire scrolling region, not just a 1539 * part of it, which means that the quickch() routine is going to be 1540 * sadly disappointed in us if we don't have cs as well. 1541 * 1542 * If cs, ho and SF/sf are set, can use the scrolling region. Because 1543 * the cursor position after cs is undefined, we need ho which gives us 1544 * the ability to move to somewhere without knowledge of the current 1545 * location of the cursor. Still call __mvcur() anyway, to update its 1546 * idea of where the cursor is. 1547 * 1548 * When the scrolling region has been set, the cursor has to be at the 1549 * last line of the region to make the scroll happen. 1550 * 1551 * Doing SF/SR or AL/DL appears faster on the screen than either sf/sr 1552 * or AL/DL, and, some terminals have AL/DL, sf/sr, and cs, but not 1553 * SF/SR. So, if we're scrolling almost all of the screen, try and use 1554 * AL/DL, otherwise use the scrolling region. The "almost all" is a 1555 * shameless hack for vi. 1556 */ 1557 if (n > 0) { 1558 if (__tc_cs != NULL && __tc_ho != NULL && (__tc_SF != NULL || 1559 ((__tc_AL == NULL || __tc_DL == NULL || 1560 top > 3 || bot + 3 < __virtscr->maxy) && 1561 __tc_sf != NULL))) { 1562 tputs(__tscroll(__tc_cs, top, bot + 1), 0, __cputchar); 1563 __mvcur(oy, ox, 0, 0, 1); 1564 tputs(__tc_ho, 0, __cputchar); 1565 __mvcur(0, 0, bot, 0, 1); 1566 if (__tc_SF != NULL) 1567 tputs(__tscroll(__tc_SF, n, 0), 0, __cputchar); 1568 else 1569 for (i = 0; i < n; i++) 1570 tputs(__tc_sf, 0, __cputchar); 1571 tputs(__tscroll(__tc_cs, 0, (int) __virtscr->maxy), 0, 1572 __cputchar); 1573 __mvcur(bot, 0, 0, 0, 1); 1574 tputs(__tc_ho, 0, __cputchar); 1575 __mvcur(0, 0, oy, ox, 1); 1576 return; 1577 } 1578 1579 /* Scroll up the block. */ 1580 if (__tc_SF != NULL && top == 0) { 1581 __mvcur(oy, ox, bot, 0, 1); 1582 tputs(__tscroll(__tc_SF, n, 0), 0, __cputchar); 1583 } else 1584 if (__tc_DL != NULL) { 1585 __mvcur(oy, ox, top, 0, 1); 1586 tputs(__tscroll(__tc_DL, n, 0), 0, __cputchar); 1587 } else 1588 if (__tc_dl != NULL) { 1589 __mvcur(oy, ox, top, 0, 1); 1590 for (i = 0; i < n; i++) 1591 tputs(__tc_dl, 0, __cputchar); 1592 } else 1593 if (__tc_sf != NULL && top == 0) { 1594 __mvcur(oy, ox, bot, 0, 1); 1595 for (i = 0; i < n; i++) 1596 tputs(__tc_sf, 0, 1597 __cputchar); 1598 } else 1599 abort(); 1600 1601 /* Push down the bottom region. */ 1602 __mvcur(top, 0, bot - n + 1, 0, 1); 1603 if (__tc_AL != NULL) 1604 tputs(__tscroll(__tc_AL, n, 0), 0, __cputchar); 1605 else 1606 if (__tc_al != NULL) 1607 for (i = 0; i < n; i++) 1608 tputs(__tc_al, 0, __cputchar); 1609 else 1610 abort(); 1611 __mvcur(bot - n + 1, 0, oy, ox, 1); 1612 } else { 1613 /* 1614 * !!! 1615 * n < 0 1616 * 1617 * If cs, ho and SR/sr are set, can use the scrolling region. 1618 * See the above comments for details. 1619 */ 1620 if (__tc_cs != NULL && __tc_ho != NULL && (__tc_SR != NULL || 1621 ((__tc_AL == NULL || __tc_DL == NULL || top > 3 || 1622 bot + 3 < __virtscr->maxy) && __tc_sr != NULL))) { 1623 tputs(__tscroll(__tc_cs, top, bot + 1), 0, __cputchar); 1624 __mvcur(oy, ox, 0, 0, 1); 1625 tputs(__tc_ho, 0, __cputchar); 1626 __mvcur(0, 0, top, 0, 1); 1627 1628 if (__tc_SR != NULL) 1629 tputs(__tscroll(__tc_SR, -n, 0), 0, __cputchar); 1630 else 1631 for (i = n; i < 0; i++) 1632 tputs(__tc_sr, 0, __cputchar); 1633 tputs(__tscroll(__tc_cs, 0, (int) __virtscr->maxy), 0, 1634 __cputchar); 1635 __mvcur(top, 0, 0, 0, 1); 1636 tputs(__tc_ho, 0, __cputchar); 1637 __mvcur(0, 0, oy, ox, 1); 1638 return; 1639 } 1640 1641 /* Preserve the bottom lines. */ 1642 __mvcur(oy, ox, bot + n + 1, 0, 1); 1643 if (__tc_SR != NULL && bot == __virtscr->maxy) 1644 tputs(__tscroll(__tc_SR, -n, 0), 0, __cputchar); 1645 else 1646 if (__tc_DL != NULL) 1647 tputs(__tscroll(__tc_DL, -n, 0), 0, __cputchar); 1648 else 1649 if (__tc_dl != NULL) 1650 for (i = n; i < 0; i++) 1651 tputs(__tc_dl, 0, __cputchar); 1652 else 1653 if (__tc_sr != NULL && 1654 bot == __virtscr->maxy) 1655 for (i = n; i < 0; i++) 1656 tputs(__tc_sr, 0, 1657 __cputchar); 1658 else 1659 abort(); 1660 1661 /* Scroll the block down. */ 1662 __mvcur(bot + n + 1, 0, top, 0, 1); 1663 if (__tc_AL != NULL) 1664 tputs(__tscroll(__tc_AL, -n, 0), 0, __cputchar); 1665 else 1666 if (__tc_al != NULL) 1667 for (i = n; i < 0; i++) 1668 tputs(__tc_al, 0, __cputchar); 1669 else 1670 abort(); 1671 __mvcur(top, 0, oy, ox, 1); 1672 } 1673 } 1674 1675 /* 1676 * __unsetattr -- 1677 * Unset attributes on curscr. Leave standout, attribute and colour 1678 * modes if necessary (!ms). Always leave altcharset (xterm at least 1679 * ignores a cursor move if we don't). 1680 */ 1681 void /* ARGSUSED */ 1682 __unsetattr(int checkms) 1683 { 1684 int isms; 1685 1686 if (checkms) 1687 if (!__tc_ms) { 1688 isms = 1; 1689 } else { 1690 isms = 0; 1691 } 1692 else 1693 isms = 1; 1694 #ifdef DEBUG 1695 __CTRACE(__CTRACE_REFRESH, 1696 "__unsetattr: checkms = %d, ms = %s, wattr = %08x\n", 1697 checkms, __tc_ms ? "TRUE" : "FALSE", curscr->wattr); 1698 #endif 1699 1700 /* 1701 * Don't leave the screen in standout mode (check against ms). Check 1702 * to see if we also turn off underscore, attributes and colour. 1703 */ 1704 if (curscr->wattr & __STANDOUT && isms) { 1705 tputs(__tc_se, 0, __cputchar); 1706 curscr->wattr &= __mask_se; 1707 } 1708 /* 1709 * Don't leave the screen in underscore mode (check against ms). 1710 * Check to see if we also turn off attributes. Assume that we 1711 * also turn off colour. 1712 */ 1713 if (curscr->wattr & __UNDERSCORE && isms) { 1714 tputs(__tc_ue, 0, __cputchar); 1715 curscr->wattr &= __mask_ue; 1716 } 1717 /* 1718 * Don't leave the screen with attributes set (check against ms). 1719 * Assume that also turn off colour. 1720 */ 1721 if (curscr->wattr & __TERMATTR && isms) { 1722 tputs(__tc_me, 0, __cputchar); 1723 curscr->wattr &= __mask_me; 1724 } 1725 /* Don't leave the screen with altcharset set (don't check ms). */ 1726 #ifndef HAVE_WCHAR 1727 if (curscr->wattr & __ALTCHARSET) { 1728 tputs(__tc_ae, 0, __cputchar); 1729 curscr->wattr &= ~__ALTCHARSET; 1730 } 1731 #else 1732 if (curscr->wattr & WA_ALTCHARSET) { 1733 tputs(__tc_ae, 0, __cputchar); 1734 curscr->wattr &= ~WA_ALTCHARSET; 1735 } 1736 #endif /* HAVE_WCHAR */ 1737 /* Don't leave the screen with colour set (check against ms). */ 1738 if (__using_color && isms) 1739 __unset_color(curscr); 1740 } 1741 1742 #ifdef HAVE_WCHAR 1743 /* compare two cells on screen, must have the same forground/background, 1744 * and the same sequence of non-spacing characters */ 1745 int 1746 cellcmp( __LDATA *x, __LDATA *y ) 1747 { 1748 nschar_t *xnp = x->nsp, *ynp = y->nsp; 1749 int ret = ( x->ch == y->ch ) & ( x->attr == y->attr ); 1750 1751 if ( !ret ) 1752 return 0; 1753 if ( !xnp && !ynp ) 1754 return 1; 1755 if (( xnp && !ynp ) || ( !xnp && ynp )) 1756 return 0; 1757 1758 while ( xnp && ynp ) { 1759 if ( xnp->ch != ynp->ch ) 1760 return 0; 1761 xnp = xnp->next; 1762 ynp = ynp->next; 1763 } 1764 return ( !xnp && !ynp ); 1765 } 1766 1767 /* compare two line segments */ 1768 int 1769 linecmp( __LDATA *xl, __LDATA *yl, size_t len ) 1770 { 1771 int i = 0; 1772 __LDATA *xp = xl, *yp = yl; 1773 1774 for ( i = 0; i < len; i++, xp++, yp++ ) { 1775 if ( !cellcmp( xp, yp )) 1776 return 0; 1777 } 1778 return 1; 1779 } 1780 1781 /* 1782 * Output the non-spacing characters associated with the given character 1783 * cell to the screen. 1784 */ 1785 1786 void 1787 __cursesi_putnsp(nschar_t *nsp, const int wy, const int wx) 1788 { 1789 nschar_t *p; 1790 1791 /* this shuts up gcc warnings about wx and wy not being used */ 1792 if (wx > wy) { 1793 } 1794 1795 p = nsp; 1796 while (p != NULL) { 1797 __cputwchar((int) p->ch); 1798 #ifdef DEBUG 1799 __CTRACE(__CTRACE_REFRESH, 1800 "_cursesi_putnsp: (%d,%d) non-spacing putwchar(0x%x)\n", 1801 wy, wx - 1, p->ch); 1802 #endif 1803 p = p->next; 1804 } 1805 } 1806 1807 #endif /* HAVE_WCHAR */ 1808
Indexes created Tue Sep 23 02:09:52 GMT 2025