refresh.c revision 1.72
1 /* $NetBSD: refresh.c,v 1.72 2010/02/03 15:34:40 roy 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 1.72 2010/02/03 15:34:40 roy 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->alines[sy]->flags == __ISDIRTY) { 178 orig->alines[sy + sub_win->begy - orig->begy]->flags 179 |= __ISDIRTY; 180 sub_win->alines[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->alines[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->alines[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->alines[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(clear_screen, 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 (!cursor_address) { 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->alines[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->alines[i]->hash); 499 for (j = 0; j < curscr->maxx; j++) 500 __CTRACE(__CTRACE_REFRESH, "%c", 501 curscr->alines[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->alines[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->alines[i]->hash); 511 __CTRACE(__CTRACE_REFRESH, " 0x%x ", 512 win->alines[i]->flags); 513 for (j = 0; j < win->maxx; j++) 514 __CTRACE(__CTRACE_REFRESH, "%c", 515 win->alines[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->alines[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->alines[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->alines[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->alines[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 win->cury, 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->alines[i]->line[j].ch, 615 curscr->alines[i]->line[j].attr, 616 curscr->alines[i]->line[j].nsp, 617 _cursesi_screen->__virtscr->alines[i]->line[j].ch, 618 _cursesi_screen->__virtscr->alines[i]->line[j].attr, 619 _cursesi_screen->__virtscr->alines[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 const 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->alines[wy]->line[x]; 668 vlp = &__virtscr->alines[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->alines[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->alines[wy]->firstchp; 688 if (wx < 0) 689 wx = 0; 690 else 691 if (wx >= win->maxx) 692 return (OK); 693 lch = *win->alines[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->alines[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->alines[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 (clr_eol && !_cursesi_screen->curwin) { 723 cp = &win->alines[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->alines[wy]->line) 728 break; 729 #else 730 while (cp->ch == ( wchar_t )btowc(( int )' ' ) 731 && ( cp->attr & WA_ATTRIBUTES ) == lspc) 732 if (cp-- <= win->alines[wy]->line) 733 break; 734 #endif /* HAVE_WCHAR */ 735 if (win->alines[wy]->line > cp) 736 nlsp = 0; 737 else 738 nlsp = cp - win->alines[wy]->line; 739 } 740 if (!_cursesi_screen->curwin) 741 ce = clr_eol; 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 #else 798 while (!cellcmp(nsp, csp) && wx <= lch) { 799 if (ce != NULL && wx >= nlsp 800 && nsp->ch == (wchar_t)btowc((int)' ') /* XXX */ 801 && (nsp->attr & WA_ATTRIBUTES) == lspc) { 802 803 #endif 804 /* Check for clear to end-of-line. */ 805 cep = &curscr->alines[wy]->line[win->maxx - 1]; 806 #ifndef HAVE_WCHAR 807 while (cep->ch == ' ' && cep->attr == lspc) /* XXX */ 808 #else 809 while (cep->ch == (wchar_t)btowc((int)' ') 810 && (cep->attr & WA_ATTRIBUTES) == lspc) 811 #endif /* HAVE_WCHAR */ 812 if (cep-- <= csp) 813 break; 814 clsp = cep - curscr->alines[wy]->line - 815 win->begx * __LDATASIZE; 816 #ifdef DEBUG 817 __CTRACE(__CTRACE_REFRESH, 818 "makech: clsp = %zu, nlsp = %zu\n", 819 clsp, nlsp); 820 #endif 821 if (((clsp - nlsp >= strlen(clr_eol) && 822 clsp < win->maxx * __LDATASIZE) || 823 wy == win->maxy - 1) && 824 (!(lspc & __COLOR) || 825 ((lspc & __COLOR) && back_color_erase))) { 826 __unsetattr(0); 827 if (__using_color && 828 ((lspc & __COLOR) != 829 (curscr->wattr & __COLOR))) 830 __set_color(curscr, lspc & 831 __COLOR); 832 tputs(clr_eol, 0, __cputchar); 833 _cursesi_screen->lx = wx + win->begx; 834 while (wx++ <= clsp) { 835 csp->attr = lspc; 836 #ifndef HAVE_WCHAR 837 csp->ch = ' '; /* XXX */ 838 #else 839 csp->ch = (wchar_t)btowc((int)' '); 840 SET_WCOL( *csp, 1 ); 841 #endif /* HAVE_WCHAR */ 842 csp++; 843 } 844 return (OK); 845 } 846 ce = NULL; 847 } 848 849 #ifdef DEBUG 850 __CTRACE(__CTRACE_REFRESH, 851 "makech: have attr %08x, need attr %08x\n", 852 curscr->wattr & WA_ATTRIBUTES, 853 nsp->attr & WA_ATTRIBUTES); 854 #endif 855 856 off = (~nsp->attr & curscr->wattr) 857 #ifndef HAVE_WCHAR 858 & __ATTRIBUTES 859 #else 860 & WA_ATTRIBUTES 861 #endif 862 ; 863 864 /* 865 * Unset attributes as appropriate. Unset first 866 * so that the relevant attributes can be reset 867 * (because 'me' unsets 'mb', 'md', 'mh', 'mk', 868 * 'mp' and 'mr'). Check to see if we also turn off 869 * standout, attributes and colour. 870 */ 871 if (off & __TERMATTR && exit_attribute_mode != NULL) { 872 tputs(exit_attribute_mode, 0, __cputchar); 873 curscr->wattr &= __mask_me; 874 off &= __mask_me; 875 } 876 877 /* 878 * Exit underscore mode if appropriate. 879 * Check to see if we also turn off standout, 880 * attributes and colour. 881 */ 882 if (off & __UNDERSCORE && exit_underline_mode != NULL) { 883 tputs(exit_underline_mode, 0, __cputchar); 884 curscr->wattr &= __mask_ue; 885 off &= __mask_ue; 886 } 887 888 /* 889 * Exit standout mode as appropriate. 890 * Check to see if we also turn off underscore, 891 * attributes and colour. 892 * XXX 893 * Should use uc if so/se not available. 894 */ 895 if (off & __STANDOUT && exit_standout_mode != NULL) { 896 tputs(exit_standout_mode, 0, __cputchar); 897 curscr->wattr &= __mask_se; 898 off &= __mask_se; 899 } 900 901 if (off & __ALTCHARSET && exit_alt_charset_mode != NULL) { 902 tputs(exit_alt_charset_mode, 0, __cputchar); 903 curscr->wattr &= ~__ALTCHARSET; 904 } 905 906 /* Set/change colour as appropriate. */ 907 if (__using_color) 908 __set_color(curscr, nsp->attr & __COLOR); 909 910 on = (nsp->attr & ~curscr->wattr) 911 #ifndef HAVE_WCHAR 912 & __ATTRIBUTES 913 #else 914 & WA_ATTRIBUTES 915 #endif 916 ; 917 918 /* 919 * Enter standout mode if appropriate. 920 */ 921 if (on & __STANDOUT && 922 enter_standout_mode != NULL && 923 exit_standout_mode != NULL) 924 { 925 tputs(enter_standout_mode, 0, __cputchar); 926 curscr->wattr |= __STANDOUT; 927 } 928 929 /* 930 * Enter underscore mode if appropriate. 931 * XXX 932 * Should use uc if us/ue not available. 933 */ 934 if (on & __UNDERSCORE && 935 enter_underline_mode != NULL && 936 exit_underline_mode != NULL) 937 { 938 tputs(enter_underline_mode, 0, __cputchar); 939 curscr->wattr |= __UNDERSCORE; 940 } 941 942 /* 943 * Set other attributes as appropriate. 944 */ 945 if (exit_attribute_mode != NULL) { 946 if (on & __BLINK && 947 enter_blink_mode != NULL) 948 { 949 tputs(enter_blink_mode, 0, __cputchar); 950 curscr->wattr |= __BLINK; 951 } 952 if (on & __BOLD && 953 enter_bold_mode != NULL) 954 { 955 tputs(enter_bold_mode, 0, __cputchar); 956 curscr->wattr |= __BOLD; 957 } 958 if (on & __DIM && 959 enter_dim_mode != NULL) 960 { 961 tputs(enter_dim_mode, 0, __cputchar); 962 curscr->wattr |= __DIM; 963 } 964 if (on & __BLANK && 965 enter_secure_mode != NULL) 966 { 967 tputs(enter_secure_mode, 0, __cputchar); 968 curscr->wattr |= __BLANK; 969 } 970 if (on & __PROTECT && 971 enter_protected_mode != NULL) 972 { 973 tputs(enter_protected_mode, 0, __cputchar); 974 curscr->wattr |= __PROTECT; 975 } 976 if (on & __REVERSE && 977 enter_reverse_mode != NULL) 978 { 979 tputs(enter_reverse_mode, 0, __cputchar); 980 curscr->wattr |= __REVERSE; 981 } 982 #ifdef HAVE_WCHAR 983 if (on & WA_TOP && 984 enter_top_hl_mode != NULL) 985 { 986 tputs(enter_top_hl_mode, 0, __cputchar); 987 curscr->wattr |= WA_TOP; 988 } 989 if (on & WA_LOW && 990 enter_low_hl_mode != NULL) 991 { 992 tputs(enter_low_hl_mode, 0, __cputchar); 993 curscr->wattr |= WA_LOW; 994 } 995 if (on & WA_LEFT && 996 enter_left_hl_mode != NULL) 997 { 998 tputs(enter_left_hl_mode, 0, __cputchar); 999 curscr->wattr |= WA_LEFT; 1000 } 1001 if (on & WA_RIGHT && 1002 enter_right_hl_mode != NULL) 1003 { 1004 tputs(enter_right_hl_mode, 0, __cputchar); 1005 curscr->wattr |= WA_RIGHT; 1006 } 1007 if (on & WA_HORIZONTAL && 1008 enter_horizontal_hl_mode != NULL) 1009 { 1010 tputs(enter_horizontal_hl_mode, 0, __cputchar); 1011 curscr->wattr |= WA_HORIZONTAL; 1012 } 1013 if (on & WA_VERTICAL && 1014 enter_vertical_hl_mode != NULL) 1015 { 1016 tputs(enter_vertical_hl_mode, 0, __cputchar); 1017 curscr->wattr |= WA_VERTICAL; 1018 } 1019 #endif /* HAVE_WCHAR */ 1020 } 1021 1022 /* Enter/exit altcharset mode as appropriate. */ 1023 if (on & __ALTCHARSET && enter_alt_charset_mode != NULL && 1024 exit_alt_charset_mode != NULL) { 1025 tputs(enter_alt_charset_mode, 0, __cputchar); 1026 curscr->wattr |= __ALTCHARSET; 1027 } 1028 1029 wx++; 1030 if (wx >= win->maxx && 1031 wy == win->maxy - 1 && !_cursesi_screen->curwin) { 1032 if (win->flags & __SCROLLOK) { 1033 if (win->flags & __ENDLINE) 1034 __unsetattr(1); 1035 if (!(win->flags & __SCROLLWIN)) { 1036 if (!_cursesi_screen->curwin) { 1037 csp->attr = nsp->attr; 1038 csp->ch = nsp->ch; 1039 #ifdef HAVE_WCHAR 1040 if (_cursesi_copy_nsp(nsp->nsp, csp) == ERR) 1041 return ERR; 1042 #endif /* HAVE_WCHAR */ 1043 } 1044 #ifndef HAVE_WCHAR 1045 __cputchar((int) nsp->ch); 1046 #else 1047 if ( WCOL( *nsp ) > 0 ) { 1048 __cputwchar((int)nsp->ch); 1049 #ifdef DEBUG 1050 __CTRACE(__CTRACE_REFRESH, 1051 "makech: (%d,%d)putwchar(0x%x)\n", 1052 wy, wx - 1, 1053 nsp->ch ); 1054 #endif /* DEBUG */ 1055 /* 1056 * Output non-spacing 1057 * characters for the 1058 * cell. 1059 */ 1060 __cursesi_putnsp(nsp->nsp, 1061 wy, wx); 1062 1063 } 1064 #endif /* HAVE_WCHAR */ 1065 } 1066 if (wx < curscr->maxx) { 1067 domvcur(_cursesi_screen->ly, wx, 1068 (int) (win->maxy - 1), 1069 (int) (win->maxx - 1)); 1070 } 1071 _cursesi_screen->ly = win->maxy - 1; 1072 _cursesi_screen->lx = win->maxx - 1; 1073 return (OK); 1074 } 1075 } 1076 if (wx < win->maxx || wy < win->maxy - 1 || 1077 !(win->flags & __SCROLLWIN)) { 1078 if (!_cursesi_screen->curwin) { 1079 csp->attr = nsp->attr; 1080 csp->ch = nsp->ch; 1081 #ifdef HAVE_WCHAR 1082 if (_cursesi_copy_nsp(nsp->nsp, 1083 csp) == ERR) 1084 return ERR; 1085 #endif /* HAVE_WCHAR */ 1086 csp++; 1087 } 1088 #ifndef HAVE_WCHAR 1089 __cputchar((int) nsp->ch); 1090 #ifdef DEBUG 1091 __CTRACE(__CTRACE_REFRESH, 1092 "makech: putchar(%c)\n", nsp->ch & 0177); 1093 #endif 1094 #else 1095 if (WCOL(*nsp) > 0) { 1096 __cputwchar((int) nsp->ch); 1097 #ifdef DEBUG 1098 __CTRACE(__CTRACE_REFRESH, 1099 "makech:(%d,%d) putwchar(%x)\n", 1100 wy, wx - 1, nsp->ch); 1101 __cursesi_putnsp(nsp->nsp, wy, wx); 1102 #endif /* DEBUG */ 1103 } 1104 #endif /* HAVE_WCHAR */ 1105 } 1106 if (underline_char && ((nsp->attr & __STANDOUT) || 1107 (nsp->attr & __UNDERSCORE))) { 1108 __cputchar('\b'); 1109 tputs(underline_char, 0, __cputchar); 1110 } 1111 nsp++; 1112 #ifdef DEBUG 1113 __CTRACE(__CTRACE_REFRESH, 1114 "makech: 2: wx = %d, lx = %d\n", 1115 wx, _cursesi_screen->lx); 1116 #endif 1117 } 1118 if (_cursesi_screen->lx == wx) /* If no change. */ 1119 break; 1120 _cursesi_screen->lx = wx; 1121 if (_cursesi_screen->lx >= COLS && auto_right_margin) 1122 _cursesi_screen->lx = COLS - 1; 1123 else 1124 if (wx >= win->maxx) { 1125 domvcur(_cursesi_screen->ly, 1126 _cursesi_screen->lx, 1127 _cursesi_screen->ly, 1128 (int) (win->maxx - 1)); 1129 _cursesi_screen->lx = win->maxx - 1; 1130 } 1131 #ifdef DEBUG 1132 __CTRACE(__CTRACE_REFRESH, "makech: 3: wx = %d, lx = %d\n", 1133 wx, _cursesi_screen->lx); 1134 #endif 1135 } 1136 #ifdef DEBUG 1137 #if HAVE_WCHAR 1138 { 1139 int x; 1140 __LDATA *lp, *vlp; 1141 1142 __CTRACE(__CTRACE_REFRESH, 1143 "makech-after: curscr(%p)-__virtscr(%p)\n", 1144 curscr, __virtscr ); 1145 for (x = 0; x < curscr->maxx; x++) { 1146 lp = &curscr->alines[wy]->line[x]; 1147 vlp = &__virtscr->alines[wy]->line[x]; 1148 __CTRACE(__CTRACE_REFRESH, 1149 "[%d,%d](%x,%x,%x,%x,%p)-" 1150 "(%x,%x,%x,%x,%p)\n", 1151 wy, x, lp->ch, lp->attr, 1152 win->bch, win->battr, lp->nsp, 1153 vlp->ch, vlp->attr, 1154 win->bch, win->battr, vlp->nsp); 1155 } 1156 } 1157 #endif /* HAVE_WCHAR */ 1158 #endif /* DEBUG */ 1159 1160 return (OK); 1161 } 1162 1163 /* 1164 * domvcur -- 1165 * Do a mvcur, leaving attributes if necessary. 1166 */ 1167 static void 1168 domvcur(oy, ox, ny, nx) 1169 int oy, ox, ny, nx; 1170 { 1171 #ifdef DEBUG 1172 __CTRACE(__CTRACE_REFRESH, "domvcur: (%x,%d)=>(%d,%d)\n", 1173 oy, ox, ny, nx ); 1174 #endif /* DEBUG */ 1175 __unsetattr(1); 1176 if ( oy == ny && ox == nx ) 1177 return; 1178 __mvcur(oy, ox, ny, nx, 1); 1179 } 1180 1181 /* 1182 * Quickch() attempts to detect a pattern in the change of the window 1183 * in order to optimize the change, e.g., scroll n lines as opposed to 1184 * repainting the screen line by line. 1185 */ 1186 1187 static __LDATA buf[128]; 1188 static u_int last_hash; 1189 static size_t last_hash_len; 1190 #define BLANKSIZE (sizeof(buf) / sizeof(buf[0])) 1191 1192 static void 1193 quickch(void) 1194 { 1195 #define THRESH (int) __virtscr->maxy / 4 1196 1197 __LINE *clp, *tmp1, *tmp2; 1198 int bsize, curs, curw, starts, startw, i, j; 1199 int n, target, cur_period, bot, top, sc_region; 1200 u_int blank_hash; 1201 attr_t bcolor; 1202 1203 #ifdef __GNUC__ 1204 curs = curw = starts = startw = 0; /* XXX gcc -Wuninitialized */ 1205 #endif 1206 /* 1207 * Find how many lines from the top of the screen are unchanged. 1208 */ 1209 for (top = 0; top < __virtscr->maxy; top++) 1210 #ifndef HAVE_WCHAR 1211 if (__virtscr->alines[top]->flags & __ISDIRTY && 1212 (__virtscr->alines[top]->hash != curscr->alines[top]->hash || 1213 memcmp(__virtscr->alines[top]->line, 1214 curscr->alines[top]->line, 1215 (size_t) __virtscr->maxx * __LDATASIZE) 1216 != 0)) 1217 break; 1218 #else 1219 if (__virtscr->alines[top]->flags & __ISDIRTY && 1220 (__virtscr->alines[top]->hash != curscr->alines[top]->hash || 1221 !linecmp(__virtscr->alines[top]->line, 1222 curscr->alines[top]->line, 1223 (size_t) __virtscr->maxx ))) 1224 break; 1225 #endif /* HAVE_WCHAR */ 1226 else 1227 __virtscr->alines[top]->flags &= ~__ISDIRTY; 1228 /* 1229 * Find how many lines from bottom of screen are unchanged. 1230 */ 1231 for (bot = __virtscr->maxy - 1; bot >= 0; bot--) 1232 #ifndef HAVE_WCHAR 1233 if (__virtscr->alines[bot]->flags & __ISDIRTY && 1234 (__virtscr->alines[bot]->hash != curscr->alines[bot]->hash || 1235 memcmp(__virtscr->alines[bot]->line, 1236 curscr->alines[bot]->line, 1237 (size_t) __virtscr->maxx * __LDATASIZE) 1238 != 0)) 1239 break; 1240 #else 1241 if (__virtscr->alines[bot]->flags & __ISDIRTY && 1242 (__virtscr->alines[bot]->hash != curscr->alines[bot]->hash || 1243 !linecmp(__virtscr->alines[bot]->line, 1244 curscr->alines[bot]->line, 1245 (size_t) __virtscr->maxx ))) 1246 break; 1247 #endif /* HAVE_WCHAR */ 1248 else 1249 __virtscr->alines[bot]->flags &= ~__ISDIRTY; 1250 1251 /* 1252 * Work round an xterm bug where inserting lines causes all the 1253 * inserted lines to be covered with the background colour we 1254 * set on the first line (even if we unset it for subsequent 1255 * lines). 1256 */ 1257 bcolor = __virtscr->alines[min(top, 1258 __virtscr->maxy - 1)]->line[0].attr & __COLOR; 1259 for (i = top + 1, j = 0; i < bot; i++) { 1260 if ((__virtscr->alines[i]->line[0].attr & __COLOR) != bcolor) { 1261 bcolor = __virtscr->alines[i]->line[__virtscr->maxx]. 1262 attr & __COLOR; 1263 j = i - top; 1264 } else 1265 break; 1266 } 1267 top += j; 1268 1269 #ifdef NO_JERKINESS 1270 /* 1271 * If we have a bottom unchanged region return. Scrolling the 1272 * bottom region up and then back down causes a screen jitter. 1273 * This will increase the number of characters sent to the screen 1274 * but it looks better. 1275 */ 1276 if (bot < __virtscr->maxy - 1) 1277 return; 1278 #endif /* NO_JERKINESS */ 1279 1280 /* 1281 * Search for the largest block of text not changed. 1282 * Invariants of the loop: 1283 * - Startw is the index of the beginning of the examined block in 1284 * __virtscr. 1285 * - Starts is the index of the beginning of the examined block in 1286 * curscr. 1287 * - Curw is the index of one past the end of the exmined block in 1288 * __virtscr. 1289 * - Curs is the index of one past the end of the exmined block in 1290 * curscr. 1291 * - bsize is the current size of the examined block. 1292 */ 1293 1294 for (bsize = bot - top; bsize >= THRESH; bsize--) { 1295 for (startw = top; startw <= bot - bsize; startw++) 1296 for (starts = top; starts <= bot - bsize; 1297 starts++) { 1298 for (curw = startw, curs = starts; 1299 curs < starts + bsize; curw++, curs++) 1300 if (__virtscr->alines[curw]->hash != 1301 curscr->alines[curs]->hash) 1302 break; 1303 if (curs != starts + bsize) 1304 continue; 1305 for (curw = startw, curs = starts; 1306 curs < starts + bsize; curw++, curs++) 1307 #ifndef HAVE_WCHAR 1308 if (memcmp(__virtscr->alines[curw]->line, 1309 curscr->alines[curs]->line, 1310 (size_t) __virtscr->maxx * 1311 __LDATASIZE) != 0) 1312 break; 1313 #else 1314 if (!linecmp(__virtscr->alines[curw]->line, 1315 curscr->alines[curs]->line, 1316 (size_t) __virtscr->maxx)) 1317 break; 1318 #endif /* HAVE_WCHAR */ 1319 if (curs == starts + bsize) 1320 goto done; 1321 } 1322 } 1323 done: 1324 1325 /* Did not find anything */ 1326 if (bsize < THRESH) 1327 return; 1328 1329 #ifdef DEBUG 1330 __CTRACE(__CTRACE_REFRESH, "quickch:bsize=%d, starts=%d, startw=%d, " 1331 "curw=%d, curs=%d, top=%d, bot=%d\n", 1332 bsize, starts, startw, curw, curs, top, bot); 1333 #endif 1334 1335 /* 1336 * Make sure that there is no overlap between the bottom and top 1337 * regions and the middle scrolled block. 1338 */ 1339 if (bot < curs) 1340 bot = curs - 1; 1341 if (top > starts) 1342 top = starts; 1343 1344 n = startw - starts; 1345 1346 #ifdef DEBUG 1347 __CTRACE(__CTRACE_REFRESH, "#####################################\n"); 1348 for (i = 0; i < curscr->maxy; i++) { 1349 __CTRACE(__CTRACE_REFRESH, "C: %d:", i); 1350 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", curscr->alines[i]->hash); 1351 for (j = 0; j < curscr->maxx; j++) 1352 __CTRACE(__CTRACE_REFRESH, "%c", 1353 curscr->alines[i]->line[j].ch); 1354 __CTRACE(__CTRACE_REFRESH, "\n"); 1355 __CTRACE(__CTRACE_REFRESH, " attr:"); 1356 for (j = 0; j < curscr->maxx; j++) 1357 __CTRACE(__CTRACE_REFRESH, " %x", 1358 curscr->alines[i]->line[j].attr); 1359 __CTRACE(__CTRACE_REFRESH, "\n"); 1360 __CTRACE(__CTRACE_REFRESH, "W: %d:", i); 1361 __CTRACE(__CTRACE_REFRESH, " 0x%x \n", 1362 __virtscr->alines[i]->hash); 1363 __CTRACE(__CTRACE_REFRESH, " 0x%x ", 1364 __virtscr->alines[i]->flags); 1365 for (j = 0; j < __virtscr->maxx; j++) 1366 __CTRACE(__CTRACE_REFRESH, "%c", 1367 __virtscr->alines[i]->line[j].ch); 1368 __CTRACE(__CTRACE_REFRESH, "\n"); 1369 __CTRACE(__CTRACE_REFRESH, " attr:"); 1370 for (j = 0; j < __virtscr->maxx; j++) 1371 __CTRACE(__CTRACE_REFRESH, " %x", 1372 __virtscr->alines[i]->line[j].attr); 1373 __CTRACE(__CTRACE_REFRESH, "\n"); 1374 } 1375 #endif 1376 1377 #ifndef HAVE_WCHAR 1378 if (buf[0].ch != ' ') { 1379 for (i = 0; i < BLANKSIZE; i++) { 1380 buf[i].ch = ' '; 1381 buf[i].attr = 0; 1382 } 1383 } 1384 #else 1385 if (buf[0].ch != ( wchar_t )btowc(( int ) curscr->bch )) { 1386 for (i = 0; i < BLANKSIZE; i++) { 1387 buf[i].ch = ( wchar_t )btowc(( int ) curscr->bch ); 1388 if (_cursesi_copy_nsp(curscr->bnsp, &buf[i]) == ERR) 1389 return; 1390 buf[i].attr = 0; 1391 SET_WCOL( buf[ i ], 1 ); 1392 } 1393 } 1394 #endif /* HAVE_WCHAR */ 1395 1396 if (__virtscr->maxx != last_hash_len) { 1397 blank_hash = 0; 1398 for (i = __virtscr->maxx; i > BLANKSIZE; i -= BLANKSIZE) { 1399 blank_hash = __hash_more(buf, sizeof(buf), blank_hash); 1400 } 1401 blank_hash = __hash_more((char *)(void *)buf, 1402 i * sizeof(buf[0]), blank_hash); 1403 /* cache result in static data - screen width doesn't change often */ 1404 last_hash_len = __virtscr->maxx; 1405 last_hash = blank_hash; 1406 } else 1407 blank_hash = last_hash; 1408 1409 /* 1410 * Perform the rotation to maintain the consistency of curscr. 1411 * This is hairy since we are doing an *in place* rotation. 1412 * Invariants of the loop: 1413 * - I is the index of the current line. 1414 * - Target is the index of the target of line i. 1415 * - Tmp1 points to current line (i). 1416 * - Tmp2 and points to target line (target); 1417 * - Cur_period is the index of the end of the current period. 1418 * (see below). 1419 * 1420 * There are 2 major issues here that make this rotation non-trivial: 1421 * 1. Scrolling in a scrolling region bounded by the top 1422 * and bottom regions determined (whose size is sc_region). 1423 * 2. As a result of the use of the mod function, there may be a 1424 * period introduced, i.e., 2 maps to 4, 4 to 6, n-2 to 0, and 1425 * 0 to 2, which then causes all odd lines not to be rotated. 1426 * To remedy this, an index of the end ( = beginning) of the 1427 * current 'period' is kept, cur_period, and when it is reached, 1428 * the next period is started from cur_period + 1 which is 1429 * guaranteed not to have been reached since that would mean that 1430 * all records would have been reached. (think about it...). 1431 * 1432 * Lines in the rotation can have 3 attributes which are marked on the 1433 * line so that curscr is consistent with the visual screen. 1434 * 1. Not dirty -- lines inside the scrolled block, top region or 1435 * bottom region. 1436 * 2. Blank lines -- lines in the differential of the scrolling 1437 * region adjacent to top and bot regions 1438 * depending on scrolling direction. 1439 * 3. Dirty line -- all other lines are marked dirty. 1440 */ 1441 sc_region = bot - top + 1; 1442 i = top; 1443 tmp1 = curscr->alines[top]; 1444 cur_period = top; 1445 for (j = top; j <= bot; j++) { 1446 target = (i - top + n + sc_region) % sc_region + top; 1447 tmp2 = curscr->alines[target]; 1448 curscr->alines[target] = tmp1; 1449 /* Mark block as clean and blank out scrolled lines. */ 1450 clp = curscr->alines[target]; 1451 #ifdef DEBUG 1452 __CTRACE(__CTRACE_REFRESH, 1453 "quickch: n=%d startw=%d curw=%d i = %d target=%d ", 1454 n, startw, curw, i, target); 1455 #endif 1456 if ((target >= startw && target < curw) || target < top 1457 || target > bot) { 1458 #ifdef DEBUG 1459 __CTRACE(__CTRACE_REFRESH, " notdirty\n"); 1460 #endif 1461 __virtscr->alines[target]->flags &= ~__ISDIRTY; 1462 } else 1463 if ((n > 0 && target >= top && target < top + n) || 1464 (n < 0 && target <= bot && target > bot + n)) { 1465 #ifndef HAVE_WCHAR 1466 if (clp->hash != blank_hash || 1467 memcmp(clp->line, clp->line + 1, 1468 (__virtscr->maxx - 1) 1469 * __LDATASIZE) || 1470 memcmp(clp->line, buf, __LDATASIZE)) { 1471 #else 1472 if (clp->hash != blank_hash 1473 || linecmp(clp->line, clp->line + 1, 1474 (unsigned int) (__virtscr->maxx - 1)) 1475 || cellcmp(clp->line, buf)) { 1476 #endif /* HAVE_WCHAR */ 1477 for (i = __virtscr->maxx; 1478 i > BLANKSIZE; 1479 i -= BLANKSIZE) { 1480 (void) memcpy(clp->line + i - 1481 BLANKSIZE, buf, sizeof(buf)); 1482 } 1483 (void) memcpy(clp->line , buf, i * 1484 sizeof(buf[0])); 1485 #ifdef DEBUG 1486 __CTRACE(__CTRACE_REFRESH, 1487 " blanked out: dirty\n"); 1488 #endif 1489 clp->hash = blank_hash; 1490 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1491 } else { 1492 #ifdef DEBUG 1493 __CTRACE(__CTRACE_REFRESH, 1494 " -- blank line already: dirty\n"); 1495 #endif 1496 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1497 } 1498 } else { 1499 #ifdef DEBUG 1500 __CTRACE(__CTRACE_REFRESH, " -- dirty\n"); 1501 #endif 1502 __touchline(__virtscr, target, 0, (int) __virtscr->maxx - 1); 1503 } 1504 if (target == cur_period) { 1505 i = target + 1; 1506 tmp1 = curscr->alines[i]; 1507 cur_period = i; 1508 } else { 1509 tmp1 = tmp2; 1510 i = target; 1511 } 1512 } 1513 #ifdef DEBUG 1514 __CTRACE(__CTRACE_REFRESH, "$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n"); 1515 for (i = 0; i < curscr->maxy; i++) { 1516 __CTRACE(__CTRACE_REFRESH, "C: %d:", i); 1517 for (j = 0; j < curscr->maxx; j++) 1518 __CTRACE(__CTRACE_REFRESH, "%c", 1519 curscr->alines[i]->line[j].ch); 1520 __CTRACE(__CTRACE_REFRESH, "\n"); 1521 __CTRACE(__CTRACE_REFRESH, "W: %d:", i); 1522 for (j = 0; j < __virtscr->maxx; j++) 1523 __CTRACE(__CTRACE_REFRESH, "%c", 1524 __virtscr->alines[i]->line[j].ch); 1525 __CTRACE(__CTRACE_REFRESH, "\n"); 1526 } 1527 #endif 1528 if (n != 0) 1529 scrolln(starts, startw, curs, bot, top); 1530 } 1531 1532 /* 1533 * scrolln -- 1534 * Scroll n lines, where n is starts - startw. 1535 */ 1536 static void /* ARGSUSED */ 1537 scrolln(starts, startw, curs, bot, top) 1538 int starts, startw, curs, bot, top; 1539 { 1540 int i, oy, ox, n; 1541 1542 oy = curscr->cury; 1543 ox = curscr->curx; 1544 n = starts - startw; 1545 1546 /* 1547 * XXX 1548 * The initial tests that set __noqch don't let us reach here unless 1549 * we have either cs + ho + SF/sf/SR/sr, or AL + DL. SF/sf and SR/sr 1550 * scrolling can only shift the entire scrolling region, not just a 1551 * part of it, which means that the quickch() routine is going to be 1552 * sadly disappointed in us if we don't have cs as well. 1553 * 1554 * If cs, ho and SF/sf are set, can use the scrolling region. Because 1555 * the cursor position after cs is undefined, we need ho which gives us 1556 * the ability to move to somewhere without knowledge of the current 1557 * location of the cursor. Still call __mvcur() anyway, to update its 1558 * idea of where the cursor is. 1559 * 1560 * When the scrolling region has been set, the cursor has to be at the 1561 * last line of the region to make the scroll happen. 1562 * 1563 * Doing SF/SR or AL/DL appears faster on the screen than either sf/sr 1564 * or AL/DL, and, some terminals have AL/DL, sf/sr, and cs, but not 1565 * SF/SR. So, if we're scrolling almost all of the screen, try and use 1566 * AL/DL, otherwise use the scrolling region. The "almost all" is a 1567 * shameless hack for vi. 1568 */ 1569 if (n > 0) { 1570 if (change_scroll_region != NULL && cursor_home != NULL && 1571 (parm_index != NULL || 1572 ((parm_insert_line == NULL || parm_delete_line == NULL || 1573 top > 3 || bot + 3 < __virtscr->maxy) && 1574 scroll_forward != NULL))) 1575 { 1576 tputs(vtparm(change_scroll_region, top, bot), 1577 0, __cputchar); 1578 __mvcur(oy, ox, 0, 0, 1); 1579 tputs(cursor_home, 0, __cputchar); 1580 __mvcur(0, 0, bot, 0, 1); 1581 if (parm_index != NULL) 1582 tputs(vtparm(parm_index, n), 1583 0, __cputchar); 1584 else 1585 for (i = 0; i < n; i++) 1586 tputs(scroll_forward, 0, __cputchar); 1587 tputs(vtparm(change_scroll_region, 1588 0, (int) __virtscr->maxy), 0, __cputchar); 1589 __mvcur(bot, 0, 0, 0, 1); 1590 tputs(cursor_home, 0, __cputchar); 1591 __mvcur(0, 0, oy, ox, 1); 1592 return; 1593 } 1594 1595 /* Scroll up the block. */ 1596 if (parm_index != NULL && top == 0) { 1597 __mvcur(oy, ox, bot, 0, 1); 1598 tputs(vtparm(parm_index, n), 0, __cputchar); 1599 } else 1600 if (parm_delete_line != NULL) { 1601 __mvcur(oy, ox, top, 0, 1); 1602 tputs(vtparm(parm_delete_line, n), 1603 0, __cputchar); 1604 } else 1605 if (delete_line != NULL) { 1606 __mvcur(oy, ox, top, 0, 1); 1607 for (i = 0; i < n; i++) 1608 tputs(delete_line, 1609 0, __cputchar); 1610 } else 1611 if (scroll_forward != NULL && top == 0) { 1612 __mvcur(oy, ox, bot, 0, 1); 1613 for (i = 0; i < n; i++) 1614 tputs(scroll_forward, 0, 1615 __cputchar); 1616 } else 1617 abort(); 1618 1619 /* Push down the bottom region. */ 1620 __mvcur(top, 0, bot - n + 1, 0, 1); 1621 if (parm_insert_line != NULL) 1622 tputs(vtparm(parm_insert_line, n), 0, __cputchar); 1623 else 1624 if (insert_line != NULL) 1625 for (i = 0; i < n; i++) 1626 tputs(insert_line, 0, __cputchar); 1627 else 1628 abort(); 1629 __mvcur(bot - n + 1, 0, oy, ox, 1); 1630 } else { 1631 /* 1632 * !!! 1633 * n < 0 1634 * 1635 * If cs, ho and SR/sr are set, can use the scrolling region. 1636 * See the above comments for details. 1637 */ 1638 if (change_scroll_region != NULL && cursor_home != NULL && 1639 (parm_rindex != NULL || 1640 ((parm_insert_line == NULL || parm_delete_line == NULL || 1641 top > 3 || 1642 bot + 3 < __virtscr->maxy) && scroll_reverse != NULL))) 1643 { 1644 tputs(vtparm(change_scroll_region, top, bot), 1645 0, __cputchar); 1646 __mvcur(oy, ox, 0, 0, 1); 1647 tputs(cursor_home, 0, __cputchar); 1648 __mvcur(0, 0, top, 0, 1); 1649 1650 if (parm_rindex != NULL) 1651 tputs(vtparm(parm_rindex, -n), 1652 0, __cputchar); 1653 else 1654 for (i = n; i < 0; i++) 1655 tputs(scroll_reverse, 0, __cputchar); 1656 tputs(vtparm(change_scroll_region, 1657 0, (int) __virtscr->maxy), 0, __cputchar); 1658 __mvcur(top, 0, 0, 0, 1); 1659 tputs(cursor_home, 0, __cputchar); 1660 __mvcur(0, 0, oy, ox, 1); 1661 return; 1662 } 1663 1664 /* Preserve the bottom lines. */ 1665 __mvcur(oy, ox, bot + n + 1, 0, 1); 1666 if (parm_rindex != NULL && bot == __virtscr->maxy) 1667 tputs(vtparm(parm_rindex, -n), 0, __cputchar); 1668 else 1669 if (parm_delete_line != NULL) 1670 tputs(vtparm(parm_delete_line, -n), 1671 0, __cputchar); 1672 else 1673 if (delete_line != NULL) 1674 for (i = n; i < 0; i++) 1675 tputs(delete_line, 1676 0, __cputchar); 1677 else 1678 if (scroll_reverse != NULL && 1679 bot == __virtscr->maxy) 1680 for (i = n; i < 0; i++) 1681 tputs(scroll_reverse, 0, 1682 __cputchar); 1683 else 1684 abort(); 1685 1686 /* Scroll the block down. */ 1687 __mvcur(bot + n + 1, 0, top, 0, 1); 1688 if (parm_insert_line != NULL) 1689 tputs(vtparm(parm_insert_line, -n), 0, __cputchar); 1690 else 1691 if (insert_line != NULL) 1692 for (i = n; i < 0; i++) 1693 tputs(insert_line, 0, __cputchar); 1694 else 1695 abort(); 1696 __mvcur(top, 0, oy, ox, 1); 1697 } 1698 } 1699 1700 /* 1701 * __unsetattr -- 1702 * Unset attributes on curscr. Leave standout, attribute and colour 1703 * modes if necessary (!ms). Always leave altcharset (xterm at least 1704 * ignores a cursor move if we don't). 1705 */ 1706 void /* ARGSUSED */ 1707 __unsetattr(int checkms) 1708 { 1709 int isms; 1710 1711 if (checkms) 1712 if (!move_standout_mode) { 1713 isms = 1; 1714 } else { 1715 isms = 0; 1716 } 1717 else 1718 isms = 1; 1719 #ifdef DEBUG 1720 __CTRACE(__CTRACE_REFRESH, 1721 "__unsetattr: checkms = %d, ms = %s, wattr = %08x\n", 1722 checkms, move_standout_mode ? "TRUE" : "FALSE", curscr->wattr); 1723 #endif 1724 1725 /* 1726 * Don't leave the screen in standout mode (check against ms). Check 1727 * to see if we also turn off underscore, attributes and colour. 1728 */ 1729 if (curscr->wattr & __STANDOUT && isms) { 1730 tputs(exit_standout_mode, 0, __cputchar); 1731 curscr->wattr &= __mask_se; 1732 } 1733 /* 1734 * Don't leave the screen in underscore mode (check against ms). 1735 * Check to see if we also turn off attributes. Assume that we 1736 * also turn off colour. 1737 */ 1738 if (curscr->wattr & __UNDERSCORE && isms) { 1739 tputs(exit_underline_mode, 0, __cputchar); 1740 curscr->wattr &= __mask_ue; 1741 } 1742 /* 1743 * Don't leave the screen with attributes set (check against ms). 1744 * Assume that also turn off colour. 1745 */ 1746 if (curscr->wattr & __TERMATTR && isms) { 1747 tputs(exit_attribute_mode, 0, __cputchar); 1748 curscr->wattr &= __mask_me; 1749 } 1750 /* Don't leave the screen with altcharset set (don't check ms). */ 1751 if (curscr->wattr & __ALTCHARSET) { 1752 tputs(exit_alt_charset_mode, 0, __cputchar); 1753 curscr->wattr &= ~__ALTCHARSET; 1754 } 1755 /* Don't leave the screen with colour set (check against ms). */ 1756 if (__using_color && isms) 1757 __unset_color(curscr); 1758 } 1759 1760 #ifdef HAVE_WCHAR 1761 /* compare two cells on screen, must have the same forground/background, 1762 * and the same sequence of non-spacing characters */ 1763 int 1764 cellcmp( __LDATA *x, __LDATA *y ) 1765 { 1766 nschar_t *xnp = x->nsp, *ynp = y->nsp; 1767 int ret = ( x->ch == y->ch ) & ( x->attr == y->attr ); 1768 1769 if ( !ret ) 1770 return 0; 1771 if ( !xnp && !ynp ) 1772 return 1; 1773 if (( xnp && !ynp ) || ( !xnp && ynp )) 1774 return 0; 1775 1776 while ( xnp && ynp ) { 1777 if ( xnp->ch != ynp->ch ) 1778 return 0; 1779 xnp = xnp->next; 1780 ynp = ynp->next; 1781 } 1782 return ( !xnp && !ynp ); 1783 } 1784 1785 /* compare two line segments */ 1786 int 1787 linecmp( __LDATA *xl, __LDATA *yl, size_t len ) 1788 { 1789 int i = 0; 1790 __LDATA *xp = xl, *yp = yl; 1791 1792 for ( i = 0; i < len; i++, xp++, yp++ ) { 1793 if ( !cellcmp( xp, yp )) 1794 return 0; 1795 } 1796 return 1; 1797 } 1798 1799 /* 1800 * Output the non-spacing characters associated with the given character 1801 * cell to the screen. 1802 */ 1803 1804 void 1805 __cursesi_putnsp(nschar_t *nsp, const int wy, const int wx) 1806 { 1807 nschar_t *p; 1808 1809 /* this shuts up gcc warnings about wx and wy not being used */ 1810 if (wx > wy) { 1811 } 1812 1813 p = nsp; 1814 while (p != NULL) { 1815 __cputwchar((int) p->ch); 1816 #ifdef DEBUG 1817 __CTRACE(__CTRACE_REFRESH, 1818 "_cursesi_putnsp: (%d,%d) non-spacing putwchar(0x%x)\n", 1819 wy, wx - 1, p->ch); 1820 #endif 1821 p = p->next; 1822 } 1823 } 1824 1825 #endif /* HAVE_WCHAR */ 1826
Indexes created Sun Sep 21 20:09:37 GMT 2025