color.c revision 1.32
1 /* $NetBSD: color.c,v 1.32 2007/01/21 13:25:36 jdc Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julian Coleman. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __RCSID("$NetBSD: color.c,v 1.32 2007/01/21 13:25:36 jdc Exp $"); 42 #endif /* not lint */ 43 44 #include "curses.h" 45 #include "curses_private.h" 46 47 /* Have we initialised colours? */ 48 int __using_color = 0; 49 50 /* Default colour number */ 51 attr_t __default_color = 0; 52 53 /* Default colour pair values - white on black. */ 54 struct __pair __default_pair = {COLOR_WHITE, COLOR_BLACK, 0}; 55 56 /* Default colour values */ 57 /* Flags for colours and pairs */ 58 #define __USED 0x01 59 60 static void 61 __change_pair(short); 62 63 /* 64 * has_colors -- 65 * Check if terminal has colours. 66 */ 67 bool 68 has_colors(void) 69 { 70 if (__tc_Co > 0 && __tc_pa > 0 && ((__tc_AF != NULL && 71 __tc_AB != NULL) || __tc_Ip != NULL || __tc_Ic != NULL || 72 (__tc_Sb != NULL && __tc_Sf != NULL))) 73 return(TRUE); 74 else 75 return(FALSE); 76 } 77 78 /* 79 * can_change_color -- 80 * Check if terminal can change colours. 81 */ 82 bool 83 can_change_color(void) 84 { 85 if (__tc_cc) 86 return(TRUE); 87 else 88 return(FALSE); 89 } 90 91 /* 92 * start_color -- 93 * Initialise colour support. 94 */ 95 int 96 start_color(void) 97 { 98 int i; 99 attr_t temp_nc; 100 struct __winlist *wlp; 101 WINDOW *win; 102 int y, x; 103 104 if (has_colors() == FALSE) 105 return(ERR); 106 107 /* Max colours and colour pairs */ 108 if (__tc_Co == -1) 109 COLORS = 0; 110 else { 111 COLORS = __tc_Co > MAX_COLORS ? MAX_COLORS : __tc_Co; 112 if (__tc_pa == -1) { 113 COLOR_PAIRS = 0; 114 COLORS = 0; 115 } else { 116 COLOR_PAIRS = (__tc_pa > MAX_PAIRS - 1 ? 117 MAX_PAIRS - 1 : __tc_pa); 118 /* Use the last colour pair for curses default. */ 119 __default_color = COLOR_PAIR(MAX_PAIRS - 1); 120 } 121 } 122 if (!COLORS) 123 return (ERR); 124 125 _cursesi_screen->COLORS = COLORS; 126 _cursesi_screen->COLOR_PAIRS = COLOR_PAIRS; 127 128 /* Reset terminal colour and colour pairs. */ 129 if (__tc_oc != NULL) 130 tputs(__tc_oc, 0, __cputchar); 131 if (__tc_op != NULL) { 132 tputs(__tc_op, 0, __cputchar); 133 curscr->wattr &= _cursesi_screen->mask_op; 134 } 135 136 /* Type of colour manipulation - ANSI/TEK/HP/other */ 137 if (__tc_AF != NULL && __tc_AB != NULL) 138 _cursesi_screen->color_type = COLOR_ANSI; 139 else if (__tc_Ip != NULL) 140 _cursesi_screen->color_type = COLOR_HP; 141 else if (__tc_Ic != NULL) 142 _cursesi_screen->color_type = COLOR_TEK; 143 else if (__tc_Sb != NULL && __tc_Sf != NULL) 144 _cursesi_screen->color_type = COLOR_OTHER; 145 else 146 return(ERR); /* Unsupported colour method */ 147 148 #ifdef DEBUG 149 __CTRACE(__CTRACE_COLOR, "start_color: COLORS = %d, COLOR_PAIRS = %d", 150 COLORS, COLOR_PAIRS); 151 switch (_cursesi_screen->color_type) { 152 case COLOR_ANSI: 153 __CTRACE(__CTRACE_COLOR, " (ANSI style)\n"); 154 break; 155 case COLOR_HP: 156 __CTRACE(__CTRACE_COLOR, " (HP style)\n"); 157 break; 158 case COLOR_TEK: 159 __CTRACE(__CTRACE_COLOR, " (Tektronics style)\n"); 160 break; 161 case COLOR_OTHER: 162 __CTRACE(__CTRACE_COLOR, " (Other style)\n"); 163 break; 164 } 165 #endif 166 167 /* 168 * Attributes that cannot be used with color. 169 * Store these in an attr_t for wattrset()/wattron(). 170 */ 171 _cursesi_screen->nca = __NORMAL; 172 if (__tc_NC != -1) { 173 temp_nc = (attr_t) t_getnum(_cursesi_screen->cursesi_genbuf, "NC"); 174 if (temp_nc & 0x0001) 175 _cursesi_screen->nca |= __STANDOUT; 176 if (temp_nc & 0x0002) 177 _cursesi_screen->nca |= __UNDERSCORE; 178 if (temp_nc & 0x0004) 179 _cursesi_screen->nca |= __REVERSE; 180 if (temp_nc & 0x0008) 181 _cursesi_screen->nca |= __BLINK; 182 if (temp_nc & 0x0010) 183 _cursesi_screen->nca |= __DIM; 184 if (temp_nc & 0x0020) 185 _cursesi_screen->nca |= __BOLD; 186 if (temp_nc & 0x0040) 187 _cursesi_screen->nca |= __BLANK; 188 if (temp_nc & 0x0080) 189 _cursesi_screen->nca |= __PROTECT; 190 if (temp_nc & 0x0100) 191 _cursesi_screen->nca |= __ALTCHARSET; 192 } 193 #ifdef DEBUG 194 __CTRACE(__CTRACE_COLOR, "start_color: _cursesi_screen->nca = %08x\n", 195 _cursesi_screen->nca); 196 #endif 197 198 /* Set up initial 8 colours */ 199 if (COLORS >= COLOR_BLACK) 200 (void) init_color(COLOR_BLACK, 0, 0, 0); 201 if (COLORS >= COLOR_RED) 202 (void) init_color(COLOR_RED, 1000, 0, 0); 203 if (COLORS >= COLOR_GREEN) 204 (void) init_color(COLOR_GREEN, 0, 1000, 0); 205 if (COLORS >= COLOR_YELLOW) 206 (void) init_color(COLOR_YELLOW, 1000, 1000, 0); 207 if (COLORS >= COLOR_BLUE) 208 (void) init_color(COLOR_BLUE, 0, 0, 1000); 209 if (COLORS >= COLOR_MAGENTA) 210 (void) init_color(COLOR_MAGENTA, 1000, 0, 1000); 211 if (COLORS >= COLOR_CYAN) 212 (void) init_color(COLOR_CYAN, 0, 1000, 1000); 213 if (COLORS >= COLOR_WHITE) 214 (void) init_color(COLOR_WHITE, 1000, 1000, 1000); 215 216 /* Initialise other colours */ 217 for (i = 8; i < COLORS; i++) { 218 _cursesi_screen->colours[i].red = 0; 219 _cursesi_screen->colours[i].green = 0; 220 _cursesi_screen->colours[i].blue = 0; 221 _cursesi_screen->colours[i].flags = 0; 222 } 223 224 /* Initialise pair 0 to default colours. */ 225 _cursesi_screen->colour_pairs[0].fore = -1; 226 _cursesi_screen->colour_pairs[0].back = -1; 227 _cursesi_screen->colour_pairs[0].flags = 0; 228 229 /* Initialise user colour pairs to default (white on black) */ 230 for (i = 0; i < COLOR_PAIRS; i++) { 231 _cursesi_screen->colour_pairs[i].fore = COLOR_WHITE; 232 _cursesi_screen->colour_pairs[i].back = COLOR_BLACK; 233 _cursesi_screen->colour_pairs[i].flags = 0; 234 } 235 236 /* Initialise default colour pair. */ 237 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore = 238 __default_pair.fore; 239 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back = 240 __default_pair.back; 241 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags = 242 __default_pair.flags; 243 244 __using_color = 1; 245 246 /* Set all positions on all windows to curses default colours. */ 247 for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) { 248 win = wlp->winp; 249 if (wlp->winp != __virtscr && wlp->winp != curscr) { 250 /* Set color attribute on other windows */ 251 win->battr |= __default_color; 252 for (y = 0; y < win->maxy; y++) { 253 for (x = 0; x < win->maxx; x++) { 254 win->lines[y]->line[x].attr &= ~__COLOR; 255 win->lines[y]->line[x].attr |= __default_color; 256 } 257 } 258 __touchwin(win); 259 } 260 } 261 262 return(OK); 263 } 264 265 /* 266 * init_pair -- 267 * Set pair foreground and background colors. 268 * Our default colour ordering is ANSI - 1 = red, 4 = blue, 3 = yellow, 269 * 6 = cyan. The older style (Sb/Sf) uses 1 = blue, 4 = red, 3 = cyan, 270 * 6 = yellow, so we swap them here and in pair_content(). 271 */ 272 int 273 init_pair(short pair, short fore, short back) 274 { 275 int changed; 276 277 #ifdef DEBUG 278 __CTRACE(__CTRACE_COLOR, "init_pair: %d, %d, %d\n", pair, fore, back); 279 #endif 280 281 if (pair < 0 || pair >= COLOR_PAIRS) 282 return (ERR); 283 if (fore >= COLORS) 284 return (ERR); 285 if (back >= COLORS) 286 return (ERR); 287 288 /* Swap red/blue and yellow/cyan */ 289 if (_cursesi_screen->color_type == COLOR_OTHER) { 290 switch (fore) { 291 case COLOR_RED: 292 fore = COLOR_BLUE; 293 break; 294 case COLOR_BLUE: 295 fore = COLOR_RED; 296 break; 297 case COLOR_YELLOW: 298 fore = COLOR_CYAN; 299 break; 300 case COLOR_CYAN: 301 fore = COLOR_YELLOW; 302 break; 303 } 304 switch (back) { 305 case COLOR_RED: 306 back = COLOR_BLUE; 307 break; 308 case COLOR_BLUE: 309 back = COLOR_RED; 310 break; 311 case COLOR_YELLOW: 312 back = COLOR_CYAN; 313 break; 314 case COLOR_CYAN: 315 back = COLOR_YELLOW; 316 break; 317 } 318 } 319 320 if ((_cursesi_screen->colour_pairs[pair].flags & __USED) && 321 (fore != _cursesi_screen->colour_pairs[pair].fore || 322 back != _cursesi_screen->colour_pairs[pair].back)) 323 changed = 1; 324 else 325 changed = 0; 326 327 _cursesi_screen->colour_pairs[pair].flags |= __USED; 328 _cursesi_screen->colour_pairs[pair].fore = fore; 329 _cursesi_screen->colour_pairs[pair].back = back; 330 331 /* XXX: need to initialise HP style (Ip) */ 332 333 if (changed) 334 __change_pair(pair); 335 return (OK); 336 } 337 338 /* 339 * pair_content -- 340 * Get pair foreground and background colours. 341 */ 342 int 343 pair_content(short pair, short *forep, short *backp) 344 { 345 if (pair < 0 || pair > _cursesi_screen->COLOR_PAIRS) 346 return(ERR); 347 348 *forep = _cursesi_screen->colour_pairs[pair].fore; 349 *backp = _cursesi_screen->colour_pairs[pair].back; 350 351 /* Swap red/blue and yellow/cyan */ 352 if (_cursesi_screen->color_type == COLOR_OTHER) { 353 switch (*forep) { 354 case COLOR_RED: 355 *forep = COLOR_BLUE; 356 break; 357 case COLOR_BLUE: 358 *forep = COLOR_RED; 359 break; 360 case COLOR_YELLOW: 361 *forep = COLOR_CYAN; 362 break; 363 case COLOR_CYAN: 364 *forep = COLOR_YELLOW; 365 break; 366 } 367 switch (*backp) { 368 case COLOR_RED: 369 *backp = COLOR_BLUE; 370 break; 371 case COLOR_BLUE: 372 *backp = COLOR_RED; 373 break; 374 case COLOR_YELLOW: 375 *backp = COLOR_CYAN; 376 break; 377 case COLOR_CYAN: 378 *backp = COLOR_YELLOW; 379 break; 380 } 381 } 382 return(OK); 383 } 384 385 /* 386 * init_color -- 387 * Set colour red, green and blue values. 388 */ 389 int 390 init_color(short color, short red, short green, short blue) 391 { 392 #ifdef DEBUG 393 __CTRACE(__CTRACE_COLOR, "init_color: %d, %d, %d, %d\n", 394 color, red, green, blue); 395 #endif 396 if (color < 0 || color >= _cursesi_screen->COLORS) 397 return(ERR); 398 399 _cursesi_screen->colours[color].red = red; 400 _cursesi_screen->colours[color].green = green; 401 _cursesi_screen->colours[color].blue = blue; 402 /* XXX Not yet implemented */ 403 return(ERR); 404 /* XXX: need to initialise Tek style (Ic) and support HLS */ 405 } 406 407 /* 408 * color_content -- 409 * Get colour red, green and blue values. 410 */ 411 int 412 color_content(short color, short *redp, short *greenp, short *bluep) 413 { 414 if (color < 0 || color >= _cursesi_screen->COLORS) 415 return(ERR); 416 417 *redp = _cursesi_screen->colours[color].red; 418 *greenp = _cursesi_screen->colours[color].green; 419 *bluep = _cursesi_screen->colours[color].blue; 420 return(OK); 421 } 422 423 /* 424 * use_default_colors -- 425 * Use terminal default colours instead of curses default colour. 426 */ 427 int 428 use_default_colors() 429 { 430 #ifdef DEBUG 431 __CTRACE(__CTRACE_COLOR, "use_default_colors\n"); 432 #endif 433 434 return(assume_default_colors(-1, -1)); 435 } 436 437 /* 438 * assume_default_colors -- 439 * Set the default foreground and background colours. 440 */ 441 int 442 assume_default_colors(short fore, short back) 443 { 444 #ifdef DEBUG 445 __CTRACE(__CTRACE_COLOR, "assume_default_colors: %d, %d\n", 446 fore, back); 447 #endif 448 /* Swap red/blue and yellow/cyan */ 449 if (_cursesi_screen->color_type == COLOR_OTHER) { 450 switch (fore) { 451 case COLOR_RED: 452 fore = COLOR_BLUE; 453 break; 454 case COLOR_BLUE: 455 fore = COLOR_RED; 456 break; 457 case COLOR_YELLOW: 458 fore = COLOR_CYAN; 459 break; 460 case COLOR_CYAN: 461 fore = COLOR_YELLOW; 462 break; 463 } 464 switch (back) { 465 case COLOR_RED: 466 back = COLOR_BLUE; 467 break; 468 case COLOR_BLUE: 469 back = COLOR_RED; 470 break; 471 case COLOR_YELLOW: 472 back = COLOR_CYAN; 473 break; 474 case COLOR_CYAN: 475 back = COLOR_YELLOW; 476 break; 477 } 478 } 479 __default_pair.fore = fore; 480 __default_pair.back = back; 481 __default_pair.flags = __USED; 482 483 if (COLOR_PAIRS) { 484 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore = fore; 485 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back = back; 486 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags = __USED; 487 } 488 489 /* 490 * If we've already called start_color(), make sure all instances 491 * of the curses default colour pair are dirty. 492 */ 493 if (__using_color) 494 __change_pair(PAIR_NUMBER(__default_color)); 495 496 return(OK); 497 } 498 499 /* 500 * no_color_video -- 501 * Return attributes that cannot be combined with color. 502 */ 503 attr_t 504 no_color_video(void) 505 { 506 return(_cursesi_screen->nca); 507 } 508 509 /* 510 * __set_color -- 511 * Set terminal foreground and background colours. 512 */ 513 void 514 __set_color( /*ARGSUSED*/ WINDOW *win, attr_t attr) 515 { 516 short pair; 517 518 if ((curscr->wattr & __COLOR) == (attr & __COLOR)) 519 return; 520 521 pair = PAIR_NUMBER((u_int32_t)attr); 522 #ifdef DEBUG 523 __CTRACE(__CTRACE_COLOR, "__set_color: %d, %d, %d\n", pair, 524 _cursesi_screen->colour_pairs[pair].fore, 525 _cursesi_screen->colour_pairs[pair].back); 526 #endif 527 switch (_cursesi_screen->color_type) { 528 /* Set ANSI forground and background colours */ 529 case COLOR_ANSI: 530 if (_cursesi_screen->colour_pairs[pair].fore < 0 || 531 _cursesi_screen->colour_pairs[pair].back < 0) 532 __unset_color(curscr); 533 if (_cursesi_screen->colour_pairs[pair].fore >= 0) 534 tputs(__parse_cap(_cursesi_screen->tc_AF, 535 _cursesi_screen->colour_pairs[pair].fore), 536 0, __cputchar); 537 if (_cursesi_screen->colour_pairs[pair].back >= 0) 538 tputs(__parse_cap(_cursesi_screen->tc_AB, 539 _cursesi_screen->colour_pairs[pair].back), 540 0, __cputchar); 541 break; 542 case COLOR_HP: 543 /* XXX: need to support HP style */ 544 break; 545 case COLOR_TEK: 546 /* XXX: need to support Tek style */ 547 break; 548 case COLOR_OTHER: 549 if (_cursesi_screen->colour_pairs[pair].fore < 0 || 550 _cursesi_screen->colour_pairs[pair].back < 0) 551 __unset_color(curscr); 552 if (_cursesi_screen->colour_pairs[pair].fore >= 0) 553 tputs(__parse_cap(_cursesi_screen->tc_Sf, 554 _cursesi_screen->colour_pairs[pair].fore), 555 0, __cputchar); 556 if (_cursesi_screen->colour_pairs[pair].back >= 0) 557 tputs(__parse_cap(_cursesi_screen->tc_Sb, 558 _cursesi_screen->colour_pairs[pair].back), 559 0, __cputchar); 560 break; 561 } 562 curscr->wattr &= ~__COLOR; 563 curscr->wattr |= attr & __COLOR; 564 } 565 566 /* 567 * __unset_color -- 568 * Clear terminal foreground and background colours. 569 */ 570 void 571 __unset_color(WINDOW *win) 572 { 573 #ifdef DEBUG 574 __CTRACE(__CTRACE_COLOR, "__unset_color\n"); 575 #endif 576 switch (_cursesi_screen->color_type) { 577 /* Clear ANSI forground and background colours */ 578 case COLOR_ANSI: 579 if (__tc_op != NULL) { 580 tputs(__tc_op, 0, __cputchar); 581 win->wattr &= __mask_op; 582 } 583 break; 584 case COLOR_HP: 585 /* XXX: need to support HP style */ 586 break; 587 case COLOR_TEK: 588 /* XXX: need to support Tek style */ 589 break; 590 case COLOR_OTHER: 591 if (__tc_op != NULL) { 592 tputs(__tc_op, 0, __cputchar); 593 win->wattr &= __mask_op; 594 } 595 break; 596 } 597 } 598 599 /* 600 * __restore_colors -- 601 * Redo color definitions after restarting 'curses' mode. 602 */ 603 void 604 __restore_colors(void) 605 { 606 if (__tc_cc != 0) 607 switch (_cursesi_screen->color_type) { 608 case COLOR_HP: 609 /* XXX: need to re-initialise HP style (Ip) */ 610 break; 611 case COLOR_TEK: 612 /* XXX: need to re-initialise Tek style (Ic) */ 613 break; 614 } 615 } 616 617 /* 618 * __change_pair -- 619 * Mark dirty all positions using pair. 620 */ 621 void 622 __change_pair(short pair) 623 { 624 struct __winlist *wlp; 625 WINDOW *win; 626 int y, x; 627 __LINE *lp; 628 uint32_t cl = COLOR_PAIR(pair); 629 630 631 for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) { 632 #ifdef DEBUG 633 __CTRACE(__CTRACE_COLOR, "__change_pair: win = %p\n", 634 wlp->winp); 635 #endif 636 win = wlp->winp; 637 if (win == __virtscr) 638 continue; 639 else if (win == curscr) { 640 /* Reset colour attribute on curscr */ 641 #ifdef DEBUG 642 __CTRACE(__CTRACE_COLOR, 643 "__change_pair: win == curscr\n"); 644 #endif 645 for (y = 0; y < curscr->maxy; y++) { 646 lp = curscr->lines[y]; 647 for (x = 0; x < curscr->maxx; x++) { 648 if ((lp->line[x].attr & __COLOR) == cl) 649 lp->line[x].attr &= ~__COLOR; 650 } 651 } 652 } else { 653 /* Mark dirty those positions with colour pair "pair" */ 654 for (y = 0; y < win->maxy; y++) { 655 lp = win->lines[y]; 656 for (x = 0; x < win->maxx; x++) 657 if ((lp->line[x].attr & 658 __COLOR) == cl) { 659 if (!(lp->flags & __ISDIRTY)) 660 lp->flags |= __ISDIRTY; 661 /* 662 * firstchp/lastchp are shared 663 * between parent window and 664 * sub-window. 665 */ 666 if (*lp->firstchp > x) 667 *lp->firstchp = x; 668 if (*lp->lastchp < x) 669 *lp->lastchp = x; 670 } 671 #ifdef DEBUG 672 if ((win->lines[y]->flags & __ISDIRTY)) 673 __CTRACE(__CTRACE_COLOR, 674 "__change_pair: first = %d, " 675 "last = %d\n", 676 *win->lines[y]->firstchp, 677 *win->lines[y]->lastchp); 678 #endif 679 } 680 } 681 } 682 } 683
Indexes created Mon Sep 22 10:09:38 GMT 2025