refresh.c revision 1.65
1 /* $NetBSD: refresh.c,v 1.65 2007/05/28 15:01:57 blymn 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 1.65 2007/05/28 15:01:57 blymn 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 int 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 nlsp = cp - win->lines[wy]->line; 736 if (nlsp < 0) 737 nlsp = 0; 738 } 739 if (!_cursesi_screen->curwin) 740 ce = __tc_ce; 741 else 742 ce = NULL; 743 744 while (wx <= lch) { 745 #ifdef DEBUG 746 __CTRACE(__CTRACE_REFRESH, "makech: wx=%d,lch=%d\n", wx, lch); 747 #endif /* DEBUG */ 748 #ifndef HAVE_WCHAR 749 if (memcmp(nsp, csp, sizeof(__LDATA)) == 0) { 750 if (wx <= lch) { 751 while (wx <= lch && 752 memcmp(nsp, csp, sizeof(__LDATA)) == 0) { 753 nsp++; 754 if (!_cursesi_screen->curwin) 755 ++csp; 756 ++wx; 757 } 758 continue; 759 } 760 break; 761 } 762 #else 763 #ifdef DEBUG 764 __CTRACE(__CTRACE_REFRESH, "makech: nsp=(%x,%x,%x,%x,%p)\n", 765 nsp->ch, nsp->attr, win->bch, win->battr, nsp->nsp); 766 __CTRACE(__CTRACE_REFRESH, "makech: csp=(%x,%x,%x,%x,%p)\n", 767 csp->ch, csp->attr, win->bch, win->battr, csp->nsp); 768 #endif /* DEBUG */ 769 if (((nsp->attr & __WCWIDTH) != __WCWIDTH) && 770 cellcmp(nsp, csp)) { 771 if (wx <= lch) { 772 while (wx <= lch && cellcmp( csp, nsp )) { 773 nsp++; 774 if (!_cursesi_screen->curwin) 775 ++csp; 776 ++wx; 777 } 778 continue; 779 } 780 break; 781 } 782 #endif /* HAVE_WCHAR */ 783 domvcur(_cursesi_screen->ly, _cursesi_screen->lx, wy, wx); 784 785 #ifdef DEBUG 786 __CTRACE(__CTRACE_REFRESH, "makech: 1: wx = %d, ly= %d, " 787 "lx = %d, newy = %d, newx = %d\n", 788 wx, _cursesi_screen->ly, _cursesi_screen->lx, wy, wx); 789 #endif 790 _cursesi_screen->ly = wy; 791 _cursesi_screen->lx = wx; 792 #ifndef HAVE_WCHAR 793 while (wx <= lch && memcmp(nsp, csp, sizeof(__LDATA)) != 0) { 794 if (ce != NULL && 795 wx >= nlsp && nsp->ch == ' ' && nsp->attr == lspc) { 796 /* Are we continuing a multircell character? */ 797 if ((nsp->attr & __WCWIDTH) == __WCWIDTH) { 798 #ifdef DEBUG 799 __CTRACE(__CTRACE_REFRESH, 800 "Skipping continuation cell\n"); 801 wx++; 802 csp->ch = nsp->ch; 803 csp->attr = nsp->attr; 804 nsp++; 805 csp++; 806 continue; 807 } 808 #endif 809 #else 810 while (!cellcmp(nsp, csp) && wx <= lch) { 811 if (ce != NULL && wx >= nlsp 812 && nsp->ch == (wchar_t)btowc((int)' ') /* XXX */ 813 && (nsp->attr & WA_ATTRIBUTES) == lspc) { 814 815 #endif 816 /* Check for clear to end-of-line. */ 817 cep = &curscr->lines[wy]->line[win->maxx - 1]; 818 #ifndef HAVE_WCHAR 819 while (cep->ch == ' ' && cep->attr == lspc) /* XXX */ 820 #else 821 while (cep->ch == (wchar_t)btowc((int)' ') 822 && (cep->attr & WA_ATTRIBUTES) == lspc) 823 #endif /* HAVE_WCHAR */ 824 if (cep-- <= csp) 825 break; 826 clsp = cep - curscr->lines[wy]->line - 827 win->begx * __LDATASIZE; 828 #ifdef DEBUG 829 __CTRACE(__CTRACE_REFRESH, 830 "makech: clsp = %d, nlsp = %d\n", 831 clsp, nlsp); 832 #endif 833 if (((clsp - nlsp >= strlen(__tc_ce) && 834 clsp < win->maxx * __LDATASIZE) || 835 wy == win->maxy - 1) && 836 (!(lspc & __COLOR) || 837 ((lspc & __COLOR) && __tc_ut))) { 838 __unsetattr(0); 839 if (__using_color && 840 ((lspc & __COLOR) != 841 (curscr->wattr & __COLOR))) 842 __set_color(curscr, lspc & 843 __COLOR); 844 tputs(__tc_ce, 0, __cputchar); 845 _cursesi_screen->lx = wx + win->begx; 846 while (wx++ <= clsp) { 847 csp->attr = lspc; 848 #ifndef HAVE_WCHAR 849 csp->ch = ' '; /* XXX */ 850 #else 851 csp->ch = (wchar_t)btowc((int)' '); 852 SET_WCOL( *csp, 1 ); 853 #endif /* HAVE_WCHAR */ 854 csp++; 855 } 856 return (OK); 857 } 858 ce = NULL; 859 } 860 861 #ifdef DEBUG 862 __CTRACE(__CTRACE_REFRESH, 863 "makech: have attr %08x, need attr %08x\n", 864 curscr->wattr & WA_ATTRIBUTES, 865 nsp->attr & WA_ATTRIBUTES); 866 #endif 867 868 off = (~nsp->attr & curscr->wattr) & WA_ATTRIBUTES; 869 870 /* 871 * Unset attributes as appropriate. Unset first 872 * so that the relevant attributes can be reset 873 * (because 'me' unsets 'mb', 'md', 'mh', 'mk', 874 * 'mp' and 'mr'). Check to see if we also turn off 875 * standout, attributes and colour. 876 */ 877 if (off & __TERMATTR && __tc_me != NULL) { 878 tputs(__tc_me, 0, __cputchar); 879 curscr->wattr &= __mask_me; 880 off &= __mask_me; 881 } 882 883 /* 884 * Exit underscore mode if appropriate. 885 * Check to see if we also turn off standout, 886 * attributes and colour. 887 */ 888 if (off & __UNDERSCORE && __tc_ue != NULL) { 889 tputs(__tc_ue, 0, __cputchar); 890 curscr->wattr &= __mask_ue; 891 off &= __mask_ue; 892 } 893 894 /* 895 * Exit standout mode as appropriate. 896 * Check to see if we also turn off underscore, 897 * attributes and colour. 898 * XXX 899 * Should use uc if so/se not available. 900 */ 901 if (off & __STANDOUT && __tc_se != NULL) { 902 tputs(__tc_se, 0, __cputchar); 903 curscr->wattr &= __mask_se; 904 off &= __mask_se; 905 } 906 907 #ifndef HAVE_WCHAR 908 if (off & __ALTCHARSET && __tc_ae != NULL) { 909 tputs(__tc_ae, 0, __cputchar); 910 curscr->wattr &= ~__ALTCHARSET; 911 } 912 #else 913 if (off & WA_ALTCHARSET && __tc_ae != NULL) { 914 tputs(__tc_ae, 0, __cputchar); 915 curscr->wattr &= ~WA_ALTCHARSET; 916 } 917 #endif /* HAVE_WCHAR */ 918 919 /* Set/change colour as appropriate. */ 920 if (__using_color) 921 __set_color(curscr, nsp->attr & __COLOR); 922 923 on = (nsp->attr & ~curscr->wattr) & WA_ATTRIBUTES; 924 925 /* 926 * Enter standout mode if appropriate. 927 */ 928 if (on & __STANDOUT && __tc_so != NULL && __tc_se 929 != NULL) { 930 tputs(__tc_so, 0, __cputchar); 931 curscr->wattr |= __STANDOUT; 932 } 933 934 /* 935 * Enter underscore mode if appropriate. 936 * XXX 937 * Should use uc if us/ue not available. 938 */ 939 if (on & __UNDERSCORE && __tc_us != NULL && 940 __tc_ue != NULL) { 941 tputs(__tc_us, 0, __cputchar); 942 curscr->wattr |= __UNDERSCORE; 943 } 944 945 /* 946 * Set other attributes as appropriate. 947 */ 948 if (__tc_me != NULL) { 949 if (on & __BLINK && __tc_mb != NULL) { 950 tputs(__tc_mb, 0, __cputchar); 951 curscr->wattr |= __BLINK; 952 } 953 if (on & __BOLD && __tc_md != NULL) { 954 tputs(__tc_md, 0, __cputchar); 955 curscr->wattr |= __BOLD; 956 } 957 if (on & __DIM && __tc_mh != NULL) { 958 tputs(__tc_mh, 0, __cputchar); 959 curscr->wattr |= __DIM; 960 } 961 if (on & __BLANK && __tc_mk != NULL) { 962 tputs(__tc_mk, 0, __cputchar); 963 curscr->wattr |= __BLANK; 964 } 965 if (on & __PROTECT && __tc_mp != NULL) { 966 tputs(__tc_mp, 0, __cputchar); 967 curscr->wattr |= __PROTECT; 968 } 969 if (on & __REVERSE && __tc_mr != NULL) { 970 tputs(__tc_mr, 0, __cputchar); 971 curscr->wattr |= __REVERSE; 972 } 973 #ifdef HAVE_WCHAR 974 if (on & WA_TOP && __tc_Xt != NULL) { 975 tputs(__tc_Xt, 0, __cputchar); 976 curscr->wattr |= WA_TOP; 977 } 978 if (on & WA_LOW && __tc_Xo != NULL) { 979 tputs(__tc_Xo, 0, __cputchar); 980 curscr->wattr |= WA_LOW; 981 } 982 if (on & WA_LEFT && __tc_Xl != NULL) { 983 tputs(__tc_Xl, 0, __cputchar); 984 curscr->wattr |= WA_LEFT; 985 } 986 if (on & WA_RIGHT && __tc_Xl != NULL) { 987 tputs(__tc_Xl, 0, __cputchar); 988 curscr->wattr |= WA_RIGHT; 989 } 990 if (on & WA_HORIZONTAL && __tc_Xh != NULL) { 991 tputs(__tc_Xh, 0, __cputchar); 992 curscr->wattr |= WA_HORIZONTAL; 993 } 994 if (on & WA_VERTICAL && __tc_Xv != NULL) { 995 tputs(__tc_Xv, 0, __cputchar); 996 curscr->wattr |= WA_VERTICAL; 997 } 998 #endif /* HAVE_WCHAR */ 999 } 1000 1001 /* Enter/exit altcharset mode as appropriate. */ 1002 #ifndef HAVE_WCHAR 1003 if (on & __ALTCHARSET && __tc_as != NULL && 1004 __tc_ae != NULL) { 1005 tputs(__tc_as, 0, __cputchar); 1006 curscr->wattr |= __ALTCHARSET; 1007 } 1008 #else 1009 if (on & WA_ALTCHARSET && __tc_as != NULL && 1010 __tc_ae != NULL) { 1011 tputs(__tc_as, 0, __cputchar); 1012 curscr->wattr |= WA_ALTCHARSET; 1013 } 1014 #endif /* HAVE_WCHAR */ 1015 1016 wx++; 1017 if (wx >= win->maxx && 1018 wy == win->maxy - 1 && !_cursesi_screen->curwin) { 1019 if (win->flags & __SCROLLOK) { 1020 if (win->flags & __ENDLINE) 1021 __unsetattr(1); 1022 if (!(win->flags & __SCROLLWIN)) { 1023 if (!_cursesi_screen->curwin) { 1024 csp->attr = nsp->attr; 1025 csp->ch = nsp->ch; 1026 #ifdef HAVE_WCHAR 1027 if (_cursesi_copy_nsp(nsp->nsp, csp) == ERR) 1028 return ERR; 1029 #endif /* HAVE_WCHAR */ 1030 } 1031 #ifndef HAVE_WCHAR 1032 __cputchar((int) nsp->ch); 1033 #else 1034 if ( WCOL( *nsp ) > 0 ) { 1035 __cputwchar((int)nsp->ch); 1036 #ifdef DEBUG 1037 __CTRACE(__CTRACE_REFRESH, 1038 "makech: (%d,%d)putwchar(0x%x)\n", 1039 wy, wx - 1, 1040 nsp->ch ); 1041 #endif /* DEBUG */ 1042 /* 1043 * Output non-spacing 1044 * characters for the 1045 * cell. 1046 */ 1047 __cursesi_putnsp(nsp->nsp, 1048 wy, wx); 1049 1050 } 1051 #endif /* HAVE_WCHAR */ 1052 } 1053 if (wx < curscr->maxx) { 1054 domvcur(_cursesi_screen->ly, wx, 1055 (int) (win->maxy - 1), 1056 (int) (win->maxx - 1)); 1057 } 1058 _cursesi_screen->ly = win->maxy - 1; 1059 _cursesi_screen->lx = win->maxx - 1; 1060 return (OK); 1061 } 1062 } 1063 if (wx < win->maxx || wy < win->maxy - 1 || 1064 !(win->flags & __SCROLLWIN)) { 1065 if (!_cursesi_screen->curwin) { 1066 csp->attr = nsp->attr; 1067 csp->ch = nsp->ch; 1068 #ifdef HAVE_WCHAR 1069 if (_cursesi_copy_nsp(nsp->nsp, 1070 csp) == ERR) 1071 return ERR; 1072 #endif /* HAVE_WCHAR */ 1073 csp++; 1074 } 1075 #ifndef HAVE_WCHAR 1076 __cputchar((int) nsp->ch); 1077 #ifdef DEBUG 1078 __CTRACE(__CTRACE_REFRESH, 1079 "makech: putchar(%c)\n", nsp->ch & 0177); 1080 #endif 1081 #else 1082 if (WCOL(*nsp) > 0) { 1083 __cputwchar((int) nsp->ch); 1084 #ifdef DEBUG 1085 __CTRACE(__CTRACE_REFRESH, 1086 "makech:(%d,%d) putwchar(%x)\n", 1087 wy, wx - 1, nsp->ch); 1088 __cursesi_putnsp(nsp->nsp, wy, wx); 1089 #endif /* DEBUG */ 1090 } 1091 #endif /* HAVE_WCHAR */ 1092 } 1093 if (__tc_uc && ((nsp->attr & __STANDOUT) || 1094 (nsp->attr & __UNDERSCORE))) { 1095 __cputchar('\b'); 1096 tputs(__tc_uc, 0, __cputchar); 1097 } 1098 nsp++; 1099 #ifdef DEBUG 1100 __CTRACE(__CTRACE_REFRESH, 1101 "makech: 2: wx = %d, lx = %d\n", 1102 wx, _cursesi_screen->lx); 1103 #endif 1104 } 1105 if (_cursesi_screen->lx == wx) /* If no change. */ 1106 break; 1107 _cursesi_screen->lx = wx; 1108 if (_cursesi_screen->lx >= COLS && __tc_am) 1109 _cursesi_screen->lx = COLS - 1; 1110 else 1111 if (wx >= win->maxx) { 1112 domvcur(_cursesi_screen->ly, 1113 _cursesi_screen->lx, 1114 _cursesi_screen->ly, 1115 (int) (win->maxx - 1)); 1116 _cursesi_screen->lx = win->maxx - 1; 1117 } 1118 #ifdef DEBUG 1119 __CTRACE(__CTRACE_REFRESH, "makech: 3: wx = %d, lx = %d\n", 1120 wx, _cursesi_screen->lx); 1121 #endif 1122 } 1123 #ifdef DEBUG 1124 #if HAVE_WCHAR 1125 { 1126 int x; 1127 __LDATA *lp, *vlp; 1128 1129 __CTRACE(__CTRACE_REFRESH, 1130 "makech-after: curscr(%p)-__virtscr(%p)\n", 1131 curscr, __virtscr ); 1132 for (x = 0; x < curscr->maxx; x++) { 1133 lp = &curscr->lines[wy]->line[x]; 1134 vlp = &__virtscr->lines[wy]->line[x]; 1135 __CTRACE(__CTRACE_REFRESH, 1136 "[%d,%d](%x,%x,%x,%x,%p)-" 1137 "(%x,%x,%x,%x,%p)\n", 1138 wy, x, lp->ch, lp->attr, 1139 win->bch, win->battr, lp->nsp, 1140 vlp->ch, vlp->attr, 1141 win->bch, win->battr, vlp->nsp); 1142 } 1143 } 1144 #endif /* HAVE_WCHAR */ 1145 #endif /* DEBUG */ 1146 1147 return (OK); 1148 } 1149 1150 /* 1151 * domvcur -- 1152 * Do a mvcur, leaving attributes if necessary. 1153 */ 1154 static void 1155 domvcur(oy, ox, ny, nx) 1156 int oy, ox, ny, nx; 1157 { 1158 #ifdef DEBUG 1159 __CTRACE(__CTRACE_REFRESH, "domvcur: (%x,%d)=>(%d,%d)\n", 1160 oy, ox, ny, nx ); 1161 #endif /* DEBUG */ 1162 __unsetattr(1); 1163 if ( oy == ny && ox == nx ) 1164 return; 1165 __mvcur(oy, ox, ny, nx, 1); 1166 } 1167 1168 /* 1169 * Quickch() attempts to detect a pattern in the change of the window 1170 * in order to optimize the change, e.g., scroll n lines as opposed to 1171 * repainting the screen line by line. 1172 */ 1173 1174 static __LDATA buf[128]; 1175 static u_int last_hash; 1176 static size_t last_hash_len; 1177 #define BLANKSIZE (sizeof(buf) / sizeof(buf[0])) 1178 1179 static void 1180 quickch(void) 1181 { 1182 #define THRESH (int) __virtscr->maxy / 4 1183 1184 __LINE *clp, *tmp1, *tmp2; 1185 int bsize, curs, curw, starts, startw, i, j; 1186 int n, target, cur_period, bot, top, sc_region; 1187 u_int blank_hash; 1188 attr_t bcolor; 1189 1190 #ifdef __GNUC__ 1191 curs = curw = starts = startw = 0; /* XXX gcc -Wuninitialized */ 1192 #endif 1193 /* 1194 * Find how many lines from the top of the screen are unchanged. 1195 */ 1196 for (top = 0; top < __virtscr->maxy; top++) 1197 #ifndef HAVE_WCHAR 1198 if (__virtscr->lines[top]->flags & __ISDIRTY && 1199 (__virtscr->lines[top]->hash != curscr->lines[top]->hash || 1200 memcmp(__virtscr->lines[top]->line, 1201 curscr->lines[top]->line, 1202 (size_t) __virtscr->maxx * __LDATASIZE) 1203 != 0)) 1204 break; 1205 #else 1206 if (__virtscr->lines[top]->flags & __ISDIRTY && 1207 (__virtscr->lines[top]->hash != curscr->lines[top]->hash || 1208 !linecmp(__virtscr->lines[top]->line, 1209 curscr->lines[top]->line, 1210 (size_t) __virtscr->maxx ))) 1211 break; 1212 #endif /* HAVE_WCHAR */ 1213 else 1214 __virtscr->lines[top]->flags &= ~__ISDIRTY; 1215 /* 1216 * Find how many lines from bottom of screen are unchanged. 1217 */ 1218 for (bot = __virtscr->maxy - 1; bot >= 0; bot--) 1219 #ifndef HAVE_WCHAR 1220 if (__virtscr->lines[bot]->flags & __ISDIRTY && 1221 (__virtscr->lines[bot]->hash != curscr->lines[bot]->hash || 1222 memcmp(__virtscr->lines[bot]->line, 1223 curscr->lines[bot]->line, 1224 (size_t) __virtscr->maxx * __LDATASIZE) 1225 != 0)) 1226 break; 1227 #else 1228 if (__virtscr->lines[bot]->flags & __ISDIRTY && 1229 (__virtscr->lines[bot]->hash != curscr->lines[bot]->hash || 1230 !linecmp(__virtscr->lines[bot]->line, 1231 curscr->lines[bot]->line, 1232 (size_t) __virtscr->maxx ))) 1233 break; 1234 #endif /* HAVE_WCHAR */ 1235 else 1236 __virtscr->lines[bot]->flags &= ~__ISDIRTY; 1237 1238 /* 1239 * Work round an xterm bug where inserting lines causes all the 1240 * inserted lines to be covered with the background colour we 1241 * set on the first line (even if we unset it for subsequent 1242 * lines). 1243 */ 1244 bcolor = __virtscr->lines[min(top, 1245 __virtscr->maxy - 1)]->line[0].attr & __COLOR; 1246 for (i = top + 1, j = 0; i < bot; i++) { 1247 if ((__virtscr->lines[i]->line[0].attr & __COLOR) != bcolor) { 1248 bcolor = __virtscr->lines[i]->line[__virtscr->maxx]. 1249 attr & __COLOR; 1250 j = i - top; 1251 } else 1252 break; 1253 } 1254 top += j; 1255 1256 #ifdef NO_JERKINESS 1257 /* 1258 * If we have a bottom unchanged region return. Scrolling the 1259 * bottom region up and then back down causes a screen jitter. 1260 * This will increase the number of characters sent to the screen 1261 * but it looks better. 1262 */ 1263 if (bot < __virtscr->maxy - 1) 1264 return; 1265 #endif /* NO_JERKINESS */ 1266 1267 /* 1268 * Search for the largest block of text not changed. 1269 * Invariants of the loop: 1270 * - Startw is the index of the beginning of the examined block in 1271 * __virtscr. 1272 * - Starts is the index of the beginning of the examined block in 1273 * curscr. 1274 * - Curw is the index of one past the end of the exmined block in 1275 * __virtscr. 1276 * - Curs is the index of one past the end of the exmined block in 1277 * curscr. 1278 * - bsize is the current size of the examined block. 1279 */ 1280 1281 for (bsize = bot - top; bsize >= THRESH; bsize--) { 1282 for (startw = top; startw <= bot - bsize; startw++) 1283 for (starts = top; starts <= bot - bsize; 1284 starts++) { 1285 for (curw = startw, curs = starts; 1286 curs < starts + bsize; curw++, curs++) 1287 if (__virtscr->lines[curw]->hash != 1288 curscr->lines[curs]->hash) 1289 break; 1290 if (curs != starts + bsize) 1291 continue; 1292 for (curw = startw, curs = starts; 1293 curs < starts + bsize; curw++, curs++) 1294 #ifndef HAVE_WCHAR 1295 if (memcmp(__virtscr->lines[curw]->line, 1296 curscr->lines[curs]->line, 1297 (size_t) __virtscr->maxx * 1298 __LDATASIZE) != 0) 1299 break; 1300 #else 1301 if (!linecmp(__virtscr->lines[curw]->line, 1302 curscr->lines[curs]->line, 1303 (size_t) __virtscr->maxx)) 1304 break; 1305 #endif /* HAVE_WCHAR */ 1306 if (curs == starts + bsize) 1307 goto done; 1308 } 1309 } 1310 done: 1311 1312 /* Did not find anything */ 1313 if (bsize < THRESH) 1314 return; 1315 1316 #ifdef DEBUG 1317 __CTRACE(__CTRACE_REFRESH, "quickch:bsize=%d, starts=%d, startw=%d, " 1318 "curw=%d, curs=%d, top=%d, bot=%d\n", 1319 bsize, starts, startw, curw, curs, top, bot); 1320 #endif 1321 1322 /* 1323 * Make sure that there is no overlap between the bottom and top 1324 * regions and the middle scrolled block. 1325 */ 1326 if (bot < curs) 1327 bot = curs - 1; 1328 if (top > starts) 1329 top = starts; 1330 1331 n = startw - starts; 1332 1333 #ifdef DEBUG 1334 __CTRACE(__CTRACE_REFRESH, "#####################################\n"); 1335 for (i = 0; i < curscr->maxy; i++) { 1336 __CTRACE(__CTRACE_REFRESH, "C: %d:", i); 1337 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", curscr->lines[i]->hash); 1338 for (j = 0; j < curscr->maxx; j++) 1339 __CTRACE(__CTRACE_REFRESH, "%c", 1340 curscr->lines[i]->line[j].ch); 1341 __CTRACE(__CTRACE_REFRESH, "\n"); 1342 __CTRACE(__CTRACE_REFRESH, " attr:"); 1343 for (j = 0; j < curscr->maxx; j++) 1344 __CTRACE(__CTRACE_REFRESH, " %x", 1345 curscr->lines[i]->line[j].attr); 1346 __CTRACE(__CTRACE_REFRESH, "\n"); 1347 __CTRACE(__CTRACE_REFRESH, "W: %d:", i); 1348 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", 1349 __virtscr->lines[i]->hash); 1350 __CTRACE(__CTRACE_REFRESH, " 0x%x ", 1351 __virtscr->lines[i]->flags); 1352 for (j = 0; j < __virtscr->maxx; j++) 1353 __CTRACE(__CTRACE_REFRESH, "%c", 1354 __virtscr->lines[i]->line[j].ch); 1355 __CTRACE(__CTRACE_REFRESH, "\n"); 1356 __CTRACE(__CTRACE_REFRESH, " attr:"); 1357 for (j = 0; j < __virtscr->maxx; j++) 1358 __CTRACE(__CTRACE_REFRESH, " %x", 1359 __virtscr->lines[i]->line[j].attr); 1360 __CTRACE(__CTRACE_REFRESH, "\n"); 1361 } 1362 #endif 1363 1364 #ifndef HAVE_WCHAR 1365 if (buf[0].ch != ' ') { 1366 for (i = 0; i < BLANKSIZE; i++) { 1367 buf[i].ch = ' '; 1368 buf[i].attr = 0; 1369 } 1370 } 1371 #else 1372 if (buf[0].ch != ( wchar_t )btowc(( int ) curscr->bch )) { 1373 for (i = 0; i < BLANKSIZE; i++) { 1374 buf[i].ch = ( wchar_t )btowc(( int ) curscr->bch ); 1375 if (_cursesi_copy_nsp(curscr->bnsp, &buf[i]) == ERR) 1376 return; 1377 buf[i].attr = 0; 1378 SET_WCOL( buf[ i ], 1 ); 1379 } 1380 } 1381 #endif /* HAVE_WCHAR */ 1382 1383 if (__virtscr->maxx != last_hash_len) { 1384 blank_hash = 0; 1385 for (i = __virtscr->maxx; i > BLANKSIZE; i -= BLANKSIZE) { 1386 blank_hash = __hash_more(buf, sizeof(buf), blank_hash); 1387 } 1388 blank_hash = __hash_more((char *)(void *)buf, 1389 i * sizeof(buf[0]), blank_hash); 1390 /* cache result in static data - screen width doesn't change often */ 1391 last_hash_len = __virtscr->maxx; 1392 last_hash = blank_hash; 1393 } else 1394 blank_hash = last_hash; 1395 1396 /* 1397 * Perform the rotation to maintain the consistency of curscr. 1398 * This is hairy since we are doing an *in place* rotation. 1399 * Invariants of the loop: 1400 * - I is the index of the current line. 1401 * - Target is the index of the target of line i. 1402 * - Tmp1 points to current line (i). 1403 * - Tmp2 and points to target line (target); 1404 * - Cur_period is the index of the end of the current period. 1405 * (see below). 1406 * 1407 * There are 2 major issues here that make this rotation non-trivial: 1408 * 1. Scrolling in a scrolling region bounded by the top 1409 * and bottom regions determined (whose size is sc_region). 1410 * 2. As a result of the use of the mod function, there may be a 1411 * period introduced, i.e., 2 maps to 4, 4 to 6, n-2 to 0, and 1412 * 0 to 2, which then causes all odd lines not to be rotated. 1413 * To remedy this, an index of the end ( = beginning) of the 1414 * current 'period' is kept, cur_period, and when it is reached, 1415 * the next period is started from cur_period + 1 which is 1416 * guaranteed not to have been reached since that would mean that 1417 * all records would have been reached. (think about it...). 1418 * 1419 * Lines in the rotation can have 3 attributes which are marked on the 1420 * line so that curscr is consistent with the visual screen. 1421 * 1. Not dirty -- lines inside the scrolled block, top region or 1422 * bottom region. 1423 * 2. Blank lines -- lines in the differential of the scrolling 1424 * region adjacent to top and bot regions 1425 * depending on scrolling direction. 1426 * 3. Dirty line -- all other lines are marked dirty. 1427 */ 1428 sc_region = bot - top + 1; 1429 i = top; 1430 tmp1 = curscr->lines[top]; 1431 cur_period = top; 1432 for (j = top; j <= bot; j++) { 1433 target = (i - top + n + sc_region) % sc_region + top; 1434 tmp2 = curscr->lines[target]; 1435 curscr->lines[target] = tmp1; 1436 /* Mark block as clean and blank out scrolled lines. */ 1437 clp = curscr->lines[target]; 1438 #ifdef DEBUG 1439 __CTRACE(__CTRACE_REFRESH, 1440 "quickch: n=%d startw=%d curw=%d i = %d target=%d ", 1441 n, startw, curw, i, target); 1442 #endif 1443 if ((target >= startw && target < curw) || target < top 1444 || target > bot) { 1445 #ifdef DEBUG 1446 __CTRACE(__CTRACE_REFRESH, " notdirty\n"); 1447 #endif 1448 __virtscr->lines[target]->flags &= ~__ISDIRTY; 1449 } else 1450 if ((n > 0 && target >= top && target < top + n) || 1451 (n < 0 && target <= bot && target > bot + n)) { 1452 #ifndef HAVE_WCHAR 1453 if (clp->hash != blank_hash || 1454 memcmp(clp->line, clp->line + 1, 1455 (__virtscr->maxx - 1) 1456 * __LDATASIZE) || 1457 memcmp(clp->line, buf, __LDATASIZE)) { 1458 #else 1459 if (clp->hash != blank_hash 1460 || linecmp(clp->line, clp->line + 1, 1461 (unsigned int) (__virtscr->maxx - 1)) 1462 || cellcmp(clp->line, buf)) { 1463 #endif /* HAVE_WCHAR */ 1464 for (i = __virtscr->maxx; 1465 i > BLANKSIZE; 1466 i -= BLANKSIZE) { 1467 (void) memcpy(clp->line + i - 1468 BLANKSIZE, buf, sizeof(buf)); 1469 } 1470 (void) memcpy(clp->line , buf, i * 1471 sizeof(buf[0])); 1472 #ifdef DEBUG 1473 __CTRACE(__CTRACE_REFRESH, 1474 " blanked out: dirty\n"); 1475 #endif 1476 clp->hash = blank_hash; 1477 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1478 } else { 1479 #ifdef DEBUG 1480 __CTRACE(__CTRACE_REFRESH, 1481 " -- blank line already: dirty\n"); 1482 #endif 1483 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1484 } 1485 } else { 1486 #ifdef DEBUG 1487 __CTRACE(__CTRACE_REFRESH, " -- dirty\n"); 1488 #endif 1489 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1490 } 1491 if (target == cur_period) { 1492 i = target + 1; 1493 tmp1 = curscr->lines[i]; 1494 cur_period = i; 1495 } else { 1496 tmp1 = tmp2; 1497 i = target; 1498 } 1499 } 1500 #ifdef DEBUG 1501 __CTRACE(__CTRACE_REFRESH, "$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n"); 1502 for (i = 0; i < curscr->maxy; i++) { 1503 __CTRACE(__CTRACE_REFRESH, "C: %d:", i); 1504 for (j = 0; j < curscr->maxx; j++) 1505 __CTRACE(__CTRACE_REFRESH, "%c", 1506 curscr->lines[i]->line[j].ch); 1507 __CTRACE(__CTRACE_REFRESH, "\n"); 1508 __CTRACE(__CTRACE_REFRESH, "W: %d:", i); 1509 for (j = 0; j < __virtscr->maxx; j++) 1510 __CTRACE(__CTRACE_REFRESH, "%c", 1511 __virtscr->lines[i]->line[j].ch); 1512 __CTRACE(__CTRACE_REFRESH, "\n"); 1513 } 1514 #endif 1515 if (n != 0) 1516 scrolln(starts, startw, curs, bot, top); 1517 } 1518 1519 /* 1520 * scrolln -- 1521 * Scroll n lines, where n is starts - startw. 1522 */ 1523 static void /* ARGSUSED */ 1524 scrolln(starts, startw, curs, bot, top) 1525 int starts, startw, curs, bot, top; 1526 { 1527 int i, oy, ox, n; 1528 1529 oy = curscr->cury; 1530 ox = curscr->curx; 1531 n = starts - startw; 1532 1533 /* 1534 * XXX 1535 * The initial tests that set __noqch don't let us reach here unless 1536 * we have either cs + ho + SF/sf/SR/sr, or AL + DL. SF/sf and SR/sr 1537 * scrolling can only shift the entire scrolling region, not just a 1538 * part of it, which means that the quickch() routine is going to be 1539 * sadly disappointed in us if we don't have cs as well. 1540 * 1541 * If cs, ho and SF/sf are set, can use the scrolling region. Because 1542 * the cursor position after cs is undefined, we need ho which gives us 1543 * the ability to move to somewhere without knowledge of the current 1544 * location of the cursor. Still call __mvcur() anyway, to update its 1545 * idea of where the cursor is. 1546 * 1547 * When the scrolling region has been set, the cursor has to be at the 1548 * last line of the region to make the scroll happen. 1549 * 1550 * Doing SF/SR or AL/DL appears faster on the screen than either sf/sr 1551 * or AL/DL, and, some terminals have AL/DL, sf/sr, and cs, but not 1552 * SF/SR. So, if we're scrolling almost all of the screen, try and use 1553 * AL/DL, otherwise use the scrolling region. The "almost all" is a 1554 * shameless hack for vi. 1555 */ 1556 if (n > 0) { 1557 if (__tc_cs != NULL && __tc_ho != NULL && (__tc_SF != NULL || 1558 ((__tc_AL == NULL || __tc_DL == NULL || 1559 top > 3 || bot + 3 < __virtscr->maxy) && 1560 __tc_sf != NULL))) { 1561 tputs(__tscroll(__tc_cs, top, bot + 1), 0, __cputchar); 1562 __mvcur(oy, ox, 0, 0, 1); 1563 tputs(__tc_ho, 0, __cputchar); 1564 __mvcur(0, 0, bot, 0, 1); 1565 if (__tc_SF != NULL) 1566 tputs(__tscroll(__tc_SF, n, 0), 0, __cputchar); 1567 else 1568 for (i = 0; i < n; i++) 1569 tputs(__tc_sf, 0, __cputchar); 1570 tputs(__tscroll(__tc_cs, 0, (int) __virtscr->maxy), 0, 1571 __cputchar); 1572 __mvcur(bot, 0, 0, 0, 1); 1573 tputs(__tc_ho, 0, __cputchar); 1574 __mvcur(0, 0, oy, ox, 1); 1575 return; 1576 } 1577 1578 /* Scroll up the block. */ 1579 if (__tc_SF != NULL && top == 0) { 1580 __mvcur(oy, ox, bot, 0, 1); 1581 tputs(__tscroll(__tc_SF, n, 0), 0, __cputchar); 1582 } else 1583 if (__tc_DL != NULL) { 1584 __mvcur(oy, ox, top, 0, 1); 1585 tputs(__tscroll(__tc_DL, n, 0), 0, __cputchar); 1586 } else 1587 if (__tc_dl != NULL) { 1588 __mvcur(oy, ox, top, 0, 1); 1589 for (i = 0; i < n; i++) 1590 tputs(__tc_dl, 0, __cputchar); 1591 } else 1592 if (__tc_sf != NULL && top == 0) { 1593 __mvcur(oy, ox, bot, 0, 1); 1594 for (i = 0; i < n; i++) 1595 tputs(__tc_sf, 0, 1596 __cputchar); 1597 } else 1598 abort(); 1599 1600 /* Push down the bottom region. */ 1601 __mvcur(top, 0, bot - n + 1, 0, 1); 1602 if (__tc_AL != NULL) 1603 tputs(__tscroll(__tc_AL, n, 0), 0, __cputchar); 1604 else 1605 if (__tc_al != NULL) 1606 for (i = 0; i < n; i++) 1607 tputs(__tc_al, 0, __cputchar); 1608 else 1609 abort(); 1610 __mvcur(bot - n + 1, 0, oy, ox, 1); 1611 } else { 1612 /* 1613 * !!! 1614 * n < 0 1615 * 1616 * If cs, ho and SR/sr are set, can use the scrolling region. 1617 * See the above comments for details. 1618 */ 1619 if (__tc_cs != NULL && __tc_ho != NULL && (__tc_SR != NULL || 1620 ((__tc_AL == NULL || __tc_DL == NULL || top > 3 || 1621 bot + 3 < __virtscr->maxy) && __tc_sr != NULL))) { 1622 tputs(__tscroll(__tc_cs, top, bot + 1), 0, __cputchar); 1623 __mvcur(oy, ox, 0, 0, 1); 1624 tputs(__tc_ho, 0, __cputchar); 1625 __mvcur(0, 0, top, 0, 1); 1626 1627 if (__tc_SR != NULL) 1628 tputs(__tscroll(__tc_SR, -n, 0), 0, __cputchar); 1629 else 1630 for (i = n; i < 0; i++) 1631 tputs(__tc_sr, 0, __cputchar); 1632 tputs(__tscroll(__tc_cs, 0, (int) __virtscr->maxy), 0, 1633 __cputchar); 1634 __mvcur(top, 0, 0, 0, 1); 1635 tputs(__tc_ho, 0, __cputchar); 1636 __mvcur(0, 0, oy, ox, 1); 1637 return; 1638 } 1639 1640 /* Preserve the bottom lines. */ 1641 __mvcur(oy, ox, bot + n + 1, 0, 1); 1642 if (__tc_SR != NULL && bot == __virtscr->maxy) 1643 tputs(__tscroll(__tc_SR, -n, 0), 0, __cputchar); 1644 else 1645 if (__tc_DL != NULL) 1646 tputs(__tscroll(__tc_DL, -n, 0), 0, __cputchar); 1647 else 1648 if (__tc_dl != NULL) 1649 for (i = n; i < 0; i++) 1650 tputs(__tc_dl, 0, __cputchar); 1651 else 1652 if (__tc_sr != NULL && 1653 bot == __virtscr->maxy) 1654 for (i = n; i < 0; i++) 1655 tputs(__tc_sr, 0, 1656 __cputchar); 1657 else 1658 abort(); 1659 1660 /* Scroll the block down. */ 1661 __mvcur(bot + n + 1, 0, top, 0, 1); 1662 if (__tc_AL != NULL) 1663 tputs(__tscroll(__tc_AL, -n, 0), 0, __cputchar); 1664 else 1665 if (__tc_al != NULL) 1666 for (i = n; i < 0; i++) 1667 tputs(__tc_al, 0, __cputchar); 1668 else 1669 abort(); 1670 __mvcur(top, 0, oy, ox, 1); 1671 } 1672 } 1673 1674 /* 1675 * __unsetattr -- 1676 * Unset attributes on curscr. Leave standout, attribute and colour 1677 * modes if necessary (!ms). Always leave altcharset (xterm at least 1678 * ignores a cursor move if we don't). 1679 */ 1680 void /* ARGSUSED */ 1681 __unsetattr(int checkms) 1682 { 1683 int isms; 1684 1685 if (checkms) 1686 if (!__tc_ms) { 1687 isms = 1; 1688 } else { 1689 isms = 0; 1690 } 1691 else 1692 isms = 1; 1693 #ifdef DEBUG 1694 __CTRACE(__CTRACE_REFRESH, 1695 "__unsetattr: checkms = %d, ms = %s, wattr = %08x\n", 1696 checkms, __tc_ms ? "TRUE" : "FALSE", curscr->wattr); 1697 #endif 1698 1699 /* 1700 * Don't leave the screen in standout mode (check against ms). Check 1701 * to see if we also turn off underscore, attributes and colour. 1702 */ 1703 if (curscr->wattr & __STANDOUT && isms) { 1704 tputs(__tc_se, 0, __cputchar); 1705 curscr->wattr &= __mask_se; 1706 } 1707 /* 1708 * Don't leave the screen in underscore mode (check against ms). 1709 * Check to see if we also turn off attributes. Assume that we 1710 * also turn off colour. 1711 */ 1712 if (curscr->wattr & __UNDERSCORE && isms) { 1713 tputs(__tc_ue, 0, __cputchar); 1714 curscr->wattr &= __mask_ue; 1715 } 1716 /* 1717 * Don't leave the screen with attributes set (check against ms). 1718 * Assume that also turn off colour. 1719 */ 1720 if (curscr->wattr & __TERMATTR && isms) { 1721 tputs(__tc_me, 0, __cputchar); 1722 curscr->wattr &= __mask_me; 1723 } 1724 /* Don't leave the screen with altcharset set (don't check ms). */ 1725 #ifndef HAVE_WCHAR 1726 if (curscr->wattr & __ALTCHARSET) { 1727 tputs(__tc_ae, 0, __cputchar); 1728 curscr->wattr &= ~__ALTCHARSET; 1729 } 1730 #else 1731 if (curscr->wattr & WA_ALTCHARSET) { 1732 tputs(__tc_ae, 0, __cputchar); 1733 curscr->wattr &= ~WA_ALTCHARSET; 1734 } 1735 #endif /* HAVE_WCHAR */ 1736 /* Don't leave the screen with colour set (check against ms). */ 1737 if (__using_color && isms) 1738 __unset_color(curscr); 1739 } 1740 1741 #ifdef HAVE_WCHAR 1742 /* compare two cells on screen, must have the same forground/background, 1743 * and the same sequence of non-spacing characters */ 1744 int 1745 cellcmp( __LDATA *x, __LDATA *y ) 1746 { 1747 nschar_t *xnp = x->nsp, *ynp = y->nsp; 1748 int ret = ( x->ch == y->ch ) & ( x->attr == y->attr ); 1749 1750 if ( !ret ) 1751 return 0; 1752 if ( !xnp && !ynp ) 1753 return 1; 1754 if (( xnp && !ynp ) || ( !xnp && ynp )) 1755 return 0; 1756 1757 while ( xnp && ynp ) { 1758 if ( xnp->ch != ynp->ch ) 1759 return 0; 1760 xnp = xnp->next; 1761 ynp = ynp->next; 1762 } 1763 return ( !xnp && !ynp ); 1764 } 1765 1766 /* compare two line segments */ 1767 int 1768 linecmp( __LDATA *xl, __LDATA *yl, size_t len ) 1769 { 1770 int i = 0; 1771 __LDATA *xp = xl, *yp = yl; 1772 1773 for ( i = 0; i < len; i++, xp++, yp++ ) { 1774 if ( !cellcmp( xp, yp )) 1775 return 0; 1776 } 1777 return 1; 1778 } 1779 1780 /* 1781 * Output the non-spacing characters associated with the given character 1782 * cell to the screen. 1783 */ 1784 1785 void 1786 __cursesi_putnsp(nschar_t *nsp, const int wy, const int wx) 1787 { 1788 nschar_t *p; 1789 1790 p = nsp; 1791 while (p != NULL) { 1792 __cputwchar((int) p->ch); 1793 #ifdef BEBUG 1794 __CTRACE(__CTRACE_REFRESH, 1795 "_cursesi_putnsp: (%d,%d) non-spacing putwchar(0x%x)\n", 1796 wy, wx - 1, p->ch); 1797 #endif 1798 p = p->next; 1799 } 1800 } 1801 1802 #endif /* HAVE_WCHAR */ 1803
Indexes created Mon Sep 22 05:09:51 GMT 2025