color.c revision 1.35
1 /* $NetBSD: color.c,v 1.35 2010/02/03 15:34:40 roy 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __RCSID("$NetBSD: color.c,v 1.35 2010/02/03 15:34:40 roy Exp $"); 35 #endif /* not lint */ 36 37 #include "curses.h" 38 #include "curses_private.h" 39 40 /* Have we initialised colours? */ 41 int __using_color = 0; 42 43 /* Default colour number */ 44 attr_t __default_color = 0; 45 46 /* Default colour pair values - white on black. */ 47 struct __pair __default_pair = {COLOR_WHITE, COLOR_BLACK, 0}; 48 49 /* Default colour values */ 50 /* Flags for colours and pairs */ 51 #define __USED 0x01 52 53 static void 54 __change_pair(short); 55 56 /* 57 * has_colors -- 58 * Check if terminal has colours. 59 */ 60 bool 61 has_colors(void) 62 { 63 if (max_colors > 0 && max_pairs > 0 && 64 ((set_a_foreground != NULL && set_a_background != NULL) || 65 initialize_pair != NULL || initialize_color != NULL || 66 (set_background != NULL && set_foreground != NULL))) 67 return(TRUE); 68 else 69 return(FALSE); 70 } 71 72 /* 73 * can_change_color -- 74 * Check if terminal can change colours. 75 */ 76 bool 77 can_change_color(void) 78 { 79 if (can_change) 80 return(TRUE); 81 else 82 return(FALSE); 83 } 84 85 /* 86 * start_color -- 87 * Initialise colour support. 88 */ 89 int 90 start_color(void) 91 { 92 int i; 93 attr_t temp_nc; 94 struct __winlist *wlp; 95 WINDOW *win; 96 int y, x; 97 98 if (has_colors() == FALSE) 99 return(ERR); 100 101 /* Max colours and colour pairs */ 102 if (max_colors == -1) 103 COLORS = 0; 104 else { 105 COLORS = max_colors > MAX_COLORS ? MAX_COLORS : max_colors; 106 if (max_pairs == -1) { 107 COLOR_PAIRS = 0; 108 COLORS = 0; 109 } else { 110 COLOR_PAIRS = (max_pairs > MAX_PAIRS - 1 ? 111 MAX_PAIRS - 1 : max_pairs); 112 /* Use the last colour pair for curses default. */ 113 __default_color = COLOR_PAIR(MAX_PAIRS - 1); 114 } 115 } 116 if (!COLORS) 117 return (ERR); 118 119 _cursesi_screen->COLORS = COLORS; 120 _cursesi_screen->COLOR_PAIRS = COLOR_PAIRS; 121 122 /* Reset terminal colour and colour pairs. */ 123 if (orig_colors != NULL) 124 tputs(orig_colors, 0, __cputchar); 125 if (orig_pair != NULL) { 126 tputs(orig_pair, 0, __cputchar); 127 curscr->wattr &= _cursesi_screen->mask_op; 128 } 129 130 /* Type of colour manipulation - ANSI/TEK/HP/other */ 131 if (set_a_foreground != NULL && set_a_background != NULL) 132 _cursesi_screen->color_type = COLOR_ANSI; 133 else if (initialize_pair != NULL) 134 _cursesi_screen->color_type = COLOR_HP; 135 else if (initialize_color != NULL) 136 _cursesi_screen->color_type = COLOR_TEK; 137 else if (set_foreground != NULL && set_background != NULL) 138 _cursesi_screen->color_type = COLOR_OTHER; 139 else 140 return(ERR); /* Unsupported colour method */ 141 142 #ifdef DEBUG 143 __CTRACE(__CTRACE_COLOR, "start_color: COLORS = %d, COLOR_PAIRS = %d", 144 COLORS, COLOR_PAIRS); 145 switch (_cursesi_screen->color_type) { 146 case COLOR_ANSI: 147 __CTRACE(__CTRACE_COLOR, " (ANSI style)\n"); 148 break; 149 case COLOR_HP: 150 __CTRACE(__CTRACE_COLOR, " (HP style)\n"); 151 break; 152 case COLOR_TEK: 153 __CTRACE(__CTRACE_COLOR, " (Tektronics style)\n"); 154 break; 155 case COLOR_OTHER: 156 __CTRACE(__CTRACE_COLOR, " (Other style)\n"); 157 break; 158 } 159 #endif 160 161 /* 162 * Attributes that cannot be used with color. 163 * Store these in an attr_t for wattrset()/wattron(). 164 */ 165 _cursesi_screen->nca = __NORMAL; 166 if (no_color_video != -1) { 167 temp_nc = (attr_t) t_no_color_video(_cursesi_screen->term); 168 if (temp_nc & 0x0001) 169 _cursesi_screen->nca |= __STANDOUT; 170 if (temp_nc & 0x0002) 171 _cursesi_screen->nca |= __UNDERSCORE; 172 if (temp_nc & 0x0004) 173 _cursesi_screen->nca |= __REVERSE; 174 if (temp_nc & 0x0008) 175 _cursesi_screen->nca |= __BLINK; 176 if (temp_nc & 0x0010) 177 _cursesi_screen->nca |= __DIM; 178 if (temp_nc & 0x0020) 179 _cursesi_screen->nca |= __BOLD; 180 if (temp_nc & 0x0040) 181 _cursesi_screen->nca |= __BLANK; 182 if (temp_nc & 0x0080) 183 _cursesi_screen->nca |= __PROTECT; 184 if (temp_nc & 0x0100) 185 _cursesi_screen->nca |= __ALTCHARSET; 186 } 187 #ifdef DEBUG 188 __CTRACE(__CTRACE_COLOR, "start_color: _cursesi_screen->nca = %08x\n", 189 _cursesi_screen->nca); 190 #endif 191 192 /* Set up initial 8 colours */ 193 if (COLORS >= COLOR_BLACK) 194 (void) init_color(COLOR_BLACK, 0, 0, 0); 195 if (COLORS >= COLOR_RED) 196 (void) init_color(COLOR_RED, 1000, 0, 0); 197 if (COLORS >= COLOR_GREEN) 198 (void) init_color(COLOR_GREEN, 0, 1000, 0); 199 if (COLORS >= COLOR_YELLOW) 200 (void) init_color(COLOR_YELLOW, 1000, 1000, 0); 201 if (COLORS >= COLOR_BLUE) 202 (void) init_color(COLOR_BLUE, 0, 0, 1000); 203 if (COLORS >= COLOR_MAGENTA) 204 (void) init_color(COLOR_MAGENTA, 1000, 0, 1000); 205 if (COLORS >= COLOR_CYAN) 206 (void) init_color(COLOR_CYAN, 0, 1000, 1000); 207 if (COLORS >= COLOR_WHITE) 208 (void) init_color(COLOR_WHITE, 1000, 1000, 1000); 209 210 /* Initialise other colours */ 211 for (i = 8; i < COLORS; i++) { 212 _cursesi_screen->colours[i].red = 0; 213 _cursesi_screen->colours[i].green = 0; 214 _cursesi_screen->colours[i].blue = 0; 215 _cursesi_screen->colours[i].flags = 0; 216 } 217 218 /* Initialise pair 0 to default colours. */ 219 _cursesi_screen->colour_pairs[0].fore = -1; 220 _cursesi_screen->colour_pairs[0].back = -1; 221 _cursesi_screen->colour_pairs[0].flags = 0; 222 223 /* Initialise user colour pairs to default (white on black) */ 224 for (i = 0; i < COLOR_PAIRS; i++) { 225 _cursesi_screen->colour_pairs[i].fore = COLOR_WHITE; 226 _cursesi_screen->colour_pairs[i].back = COLOR_BLACK; 227 _cursesi_screen->colour_pairs[i].flags = 0; 228 } 229 230 /* Initialise default colour pair. */ 231 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore = 232 __default_pair.fore; 233 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back = 234 __default_pair.back; 235 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags = 236 __default_pair.flags; 237 238 __using_color = 1; 239 240 /* Set all positions on all windows to curses default colours. */ 241 for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) { 242 win = wlp->winp; 243 if (wlp->winp != __virtscr && wlp->winp != curscr) { 244 /* Set color attribute on other windows */ 245 win->battr |= __default_color; 246 for (y = 0; y < win->maxy; y++) { 247 for (x = 0; x < win->maxx; x++) { 248 win->alines[y]->line[x].attr &= ~__COLOR; 249 win->alines[y]->line[x].attr |= __default_color; 250 } 251 } 252 __touchwin(win); 253 } 254 } 255 256 return(OK); 257 } 258 259 /* 260 * init_pair -- 261 * Set pair foreground and background colors. 262 * Our default colour ordering is ANSI - 1 = red, 4 = blue, 3 = yellow, 263 * 6 = cyan. The older style (Sb/Sf) uses 1 = blue, 4 = red, 3 = cyan, 264 * 6 = yellow, so we swap them here and in pair_content(). 265 */ 266 int 267 init_pair(short pair, short fore, short back) 268 { 269 int changed; 270 271 #ifdef DEBUG 272 __CTRACE(__CTRACE_COLOR, "init_pair: %d, %d, %d\n", pair, fore, back); 273 #endif 274 275 if (pair < 0 || pair >= COLOR_PAIRS) 276 return (ERR); 277 if (fore >= COLORS) 278 return (ERR); 279 if (back >= COLORS) 280 return (ERR); 281 282 /* Swap red/blue and yellow/cyan */ 283 if (_cursesi_screen->color_type == COLOR_OTHER) { 284 switch (fore) { 285 case COLOR_RED: 286 fore = COLOR_BLUE; 287 break; 288 case COLOR_BLUE: 289 fore = COLOR_RED; 290 break; 291 case COLOR_YELLOW: 292 fore = COLOR_CYAN; 293 break; 294 case COLOR_CYAN: 295 fore = COLOR_YELLOW; 296 break; 297 } 298 switch (back) { 299 case COLOR_RED: 300 back = COLOR_BLUE; 301 break; 302 case COLOR_BLUE: 303 back = COLOR_RED; 304 break; 305 case COLOR_YELLOW: 306 back = COLOR_CYAN; 307 break; 308 case COLOR_CYAN: 309 back = COLOR_YELLOW; 310 break; 311 } 312 } 313 314 if ((_cursesi_screen->colour_pairs[pair].flags & __USED) && 315 (fore != _cursesi_screen->colour_pairs[pair].fore || 316 back != _cursesi_screen->colour_pairs[pair].back)) 317 changed = 1; 318 else 319 changed = 0; 320 321 _cursesi_screen->colour_pairs[pair].flags |= __USED; 322 _cursesi_screen->colour_pairs[pair].fore = fore; 323 _cursesi_screen->colour_pairs[pair].back = back; 324 325 /* XXX: need to initialise HP style (Ip) */ 326 327 if (changed) 328 __change_pair(pair); 329 return (OK); 330 } 331 332 /* 333 * pair_content -- 334 * Get pair foreground and background colours. 335 */ 336 int 337 pair_content(short pair, short *forep, short *backp) 338 { 339 if (pair < 0 || pair > _cursesi_screen->COLOR_PAIRS) 340 return(ERR); 341 342 *forep = _cursesi_screen->colour_pairs[pair].fore; 343 *backp = _cursesi_screen->colour_pairs[pair].back; 344 345 /* Swap red/blue and yellow/cyan */ 346 if (_cursesi_screen->color_type == COLOR_OTHER) { 347 switch (*forep) { 348 case COLOR_RED: 349 *forep = COLOR_BLUE; 350 break; 351 case COLOR_BLUE: 352 *forep = COLOR_RED; 353 break; 354 case COLOR_YELLOW: 355 *forep = COLOR_CYAN; 356 break; 357 case COLOR_CYAN: 358 *forep = COLOR_YELLOW; 359 break; 360 } 361 switch (*backp) { 362 case COLOR_RED: 363 *backp = COLOR_BLUE; 364 break; 365 case COLOR_BLUE: 366 *backp = COLOR_RED; 367 break; 368 case COLOR_YELLOW: 369 *backp = COLOR_CYAN; 370 break; 371 case COLOR_CYAN: 372 *backp = COLOR_YELLOW; 373 break; 374 } 375 } 376 return(OK); 377 } 378 379 /* 380 * init_color -- 381 * Set colour red, green and blue values. 382 */ 383 int 384 init_color(short color, short red, short green, short blue) 385 { 386 #ifdef DEBUG 387 __CTRACE(__CTRACE_COLOR, "init_color: %d, %d, %d, %d\n", 388 color, red, green, blue); 389 #endif 390 if (color < 0 || color >= _cursesi_screen->COLORS) 391 return(ERR); 392 393 _cursesi_screen->colours[color].red = red; 394 _cursesi_screen->colours[color].green = green; 395 _cursesi_screen->colours[color].blue = blue; 396 /* XXX Not yet implemented */ 397 return(ERR); 398 /* XXX: need to initialise Tek style (Ic) and support HLS */ 399 } 400 401 /* 402 * color_content -- 403 * Get colour red, green and blue values. 404 */ 405 int 406 color_content(short color, short *redp, short *greenp, short *bluep) 407 { 408 if (color < 0 || color >= _cursesi_screen->COLORS) 409 return(ERR); 410 411 *redp = _cursesi_screen->colours[color].red; 412 *greenp = _cursesi_screen->colours[color].green; 413 *bluep = _cursesi_screen->colours[color].blue; 414 return(OK); 415 } 416 417 /* 418 * use_default_colors -- 419 * Use terminal default colours instead of curses default colour. 420 */ 421 int 422 use_default_colors() 423 { 424 #ifdef DEBUG 425 __CTRACE(__CTRACE_COLOR, "use_default_colors\n"); 426 #endif 427 428 return(assume_default_colors(-1, -1)); 429 } 430 431 /* 432 * assume_default_colors -- 433 * Set the default foreground and background colours. 434 */ 435 int 436 assume_default_colors(short fore, short back) 437 { 438 #ifdef DEBUG 439 __CTRACE(__CTRACE_COLOR, "assume_default_colors: %d, %d\n", 440 fore, back); 441 #endif 442 /* Swap red/blue and yellow/cyan */ 443 if (_cursesi_screen->color_type == COLOR_OTHER) { 444 switch (fore) { 445 case COLOR_RED: 446 fore = COLOR_BLUE; 447 break; 448 case COLOR_BLUE: 449 fore = COLOR_RED; 450 break; 451 case COLOR_YELLOW: 452 fore = COLOR_CYAN; 453 break; 454 case COLOR_CYAN: 455 fore = COLOR_YELLOW; 456 break; 457 } 458 switch (back) { 459 case COLOR_RED: 460 back = COLOR_BLUE; 461 break; 462 case COLOR_BLUE: 463 back = COLOR_RED; 464 break; 465 case COLOR_YELLOW: 466 back = COLOR_CYAN; 467 break; 468 case COLOR_CYAN: 469 back = COLOR_YELLOW; 470 break; 471 } 472 } 473 __default_pair.fore = fore; 474 __default_pair.back = back; 475 __default_pair.flags = __USED; 476 477 if (COLOR_PAIRS) { 478 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore = fore; 479 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back = back; 480 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags = __USED; 481 } 482 483 /* 484 * If we've already called start_color(), make sure all instances 485 * of the curses default colour pair are dirty. 486 */ 487 if (__using_color) 488 __change_pair(PAIR_NUMBER(__default_color)); 489 490 return(OK); 491 } 492 493 /* no_color_video is a terminfo macro, but we need to retain binary compat */ 494 #ifdef __strong_alias 495 #undef no_color_video 496 __strong_alias(no_color_video, no_color_attributes) 497 #endif 498 /* 499 * no_color_attributes -- 500 * Return attributes that cannot be combined with color. 501 */ 502 attr_t 503 no_color_attributes(void) 504 { 505 return(_cursesi_screen->nca); 506 } 507 508 /* 509 * __set_color -- 510 * Set terminal foreground and background colours. 511 */ 512 void 513 __set_color( /*ARGSUSED*/ WINDOW *win, attr_t attr) 514 { 515 short pair; 516 517 if ((curscr->wattr & __COLOR) == (attr & __COLOR)) 518 return; 519 520 pair = PAIR_NUMBER((u_int32_t)attr); 521 #ifdef DEBUG 522 __CTRACE(__CTRACE_COLOR, "__set_color: %d, %d, %d\n", pair, 523 _cursesi_screen->colour_pairs[pair].fore, 524 _cursesi_screen->colour_pairs[pair].back); 525 #endif 526 switch (_cursesi_screen->color_type) { 527 /* Set ANSI forground and background colours */ 528 case COLOR_ANSI: 529 if (_cursesi_screen->colour_pairs[pair].fore < 0 || 530 _cursesi_screen->colour_pairs[pair].back < 0) 531 __unset_color(curscr); 532 if (_cursesi_screen->colour_pairs[pair].fore >= 0) 533 tputs(vtparm(t_set_a_foreground(_cursesi_screen->term), 534 _cursesi_screen->colour_pairs[pair].fore), 535 0, __cputchar); 536 if (_cursesi_screen->colour_pairs[pair].back >= 0) 537 tputs(vtparm(t_set_a_background(_cursesi_screen->term), 538 _cursesi_screen->colour_pairs[pair].back), 539 0, __cputchar); 540 break; 541 case COLOR_HP: 542 /* XXX: need to support HP style */ 543 break; 544 case COLOR_TEK: 545 /* XXX: need to support Tek style */ 546 break; 547 case COLOR_OTHER: 548 if (_cursesi_screen->colour_pairs[pair].fore < 0 || 549 _cursesi_screen->colour_pairs[pair].back < 0) 550 __unset_color(curscr); 551 if (_cursesi_screen->colour_pairs[pair].fore >= 0) 552 tputs(vtparm(t_set_foreground(_cursesi_screen->term), 553 _cursesi_screen->colour_pairs[pair].fore), 554 0, __cputchar); 555 if (_cursesi_screen->colour_pairs[pair].back >= 0) 556 tputs(vtparm(t_set_background(_cursesi_screen->term), 557 _cursesi_screen->colour_pairs[pair].back), 558 0, __cputchar); 559 break; 560 } 561 curscr->wattr &= ~__COLOR; 562 curscr->wattr |= attr & __COLOR; 563 } 564 565 /* 566 * __unset_color -- 567 * Clear terminal foreground and background colours. 568 */ 569 void 570 __unset_color(WINDOW *win) 571 { 572 #ifdef DEBUG 573 __CTRACE(__CTRACE_COLOR, "__unset_color\n"); 574 #endif 575 switch (_cursesi_screen->color_type) { 576 /* Clear ANSI forground and background colours */ 577 case COLOR_ANSI: 578 if (orig_pair != NULL) { 579 tputs(orig_pair, 0, __cputchar); 580 win->wattr &= __mask_op; 581 } 582 break; 583 case COLOR_HP: 584 /* XXX: need to support HP style */ 585 break; 586 case COLOR_TEK: 587 /* XXX: need to support Tek style */ 588 break; 589 case COLOR_OTHER: 590 if (orig_pair != NULL) { 591 tputs(orig_pair, 0, __cputchar); 592 win->wattr &= __mask_op; 593 } 594 break; 595 } 596 } 597 598 /* 599 * __restore_colors -- 600 * Redo color definitions after restarting 'curses' mode. 601 */ 602 void 603 __restore_colors(void) 604 { 605 if (can_change != 0) 606 switch (_cursesi_screen->color_type) { 607 case COLOR_HP: 608 /* XXX: need to re-initialise HP style (Ip) */ 609 break; 610 case COLOR_TEK: 611 /* XXX: need to re-initialise Tek style (Ic) */ 612 break; 613 } 614 } 615 616 /* 617 * __change_pair -- 618 * Mark dirty all positions using pair. 619 */ 620 void 621 __change_pair(short pair) 622 { 623 struct __winlist *wlp; 624 WINDOW *win; 625 int y, x; 626 __LINE *lp; 627 uint32_t cl = COLOR_PAIR(pair); 628 629 630 for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) { 631 #ifdef DEBUG 632 __CTRACE(__CTRACE_COLOR, "__change_pair: win = %p\n", 633 wlp->winp); 634 #endif 635 win = wlp->winp; 636 if (win == __virtscr) 637 continue; 638 else if (win == curscr) { 639 /* Reset colour attribute on curscr */ 640 #ifdef DEBUG 641 __CTRACE(__CTRACE_COLOR, 642 "__change_pair: win == curscr\n"); 643 #endif 644 for (y = 0; y < curscr->maxy; y++) { 645 lp = curscr->alines[y]; 646 for (x = 0; x < curscr->maxx; x++) { 647 if ((lp->line[x].attr & __COLOR) == cl) 648 lp->line[x].attr &= ~__COLOR; 649 } 650 } 651 } else { 652 /* Mark dirty those positions with colour pair "pair" */ 653 for (y = 0; y < win->maxy; y++) { 654 lp = win->alines[y]; 655 for (x = 0; x < win->maxx; x++) 656 if ((lp->line[x].attr & 657 __COLOR) == cl) { 658 if (!(lp->flags & __ISDIRTY)) 659 lp->flags |= __ISDIRTY; 660 /* 661 * firstchp/lastchp are shared 662 * between parent window and 663 * sub-window. 664 */ 665 if (*lp->firstchp > x) 666 *lp->firstchp = x; 667 if (*lp->lastchp < x) 668 *lp->lastchp = x; 669 } 670 #ifdef DEBUG 671 if ((win->alines[y]->flags & __ISDIRTY)) 672 __CTRACE(__CTRACE_COLOR, 673 "__change_pair: first = %d, " 674 "last = %d\n", 675 *win->alines[y]->firstchp, 676 *win->alines[y]->lastchp); 677 #endif 678 } 679 } 680 } 681 } 682
Indexes created Wed Sep 24 05:09:52 GMT 2025