color.c revision 1.30
1 /* $NetBSD: color.c,v 1.30 2006/01/15 11:43:54 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 1.30 2006/01/15 11:43:54 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("start_color: COLORS = %d, COLOR_PAIRS = %d", 150 COLORS, COLOR_PAIRS); 151 switch (_cursesi_screen->color_type) { 152 case COLOR_ANSI: 153 __CTRACE(" (ANSI style)\n"); 154 break; 155 case COLOR_HP: 156 __CTRACE(" (HP style)\n"); 157 break; 158 case COLOR_TEK: 159 __CTRACE(" (Tektronics style)\n"); 160 break; 161 case COLOR_OTHER: 162 __CTRACE(" (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 ("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("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("init_color: %d, %d, %d, %d\n", color, red, green, blue); 394 #endif 395 if (color < 0 || color >= _cursesi_screen->COLORS) 396 return(ERR); 397 398 _cursesi_screen->colours[color].red = red; 399 _cursesi_screen->colours[color].green = green; 400 _cursesi_screen->colours[color].blue = blue; 401 /* XXX Not yet implemented */ 402 return(ERR); 403 /* XXX: need to initialise Tek style (Ic) and support HLS */ 404 } 405 406 /* 407 * color_content -- 408 * Get colour red, green and blue values. 409 */ 410 int 411 color_content(short color, short *redp, short *greenp, short *bluep) 412 { 413 if (color < 0 || color >= _cursesi_screen->COLORS) 414 return(ERR); 415 416 *redp = _cursesi_screen->colours[color].red; 417 *greenp = _cursesi_screen->colours[color].green; 418 *bluep = _cursesi_screen->colours[color].blue; 419 return(OK); 420 } 421 422 /* 423 * use_default_colors -- 424 * Use terminal default colours instead of curses default colour. 425 */ 426 int 427 use_default_colors() 428 { 429 #ifdef DEBUG 430 __CTRACE("use_default_colors\n"); 431 #endif 432 433 return(assume_default_colors(-1, -1)); 434 } 435 436 /* 437 * assume_default_colors -- 438 * Set the default foreground and background colours. 439 */ 440 int 441 assume_default_colors(short fore, short back) 442 { 443 #ifdef DEBUG 444 __CTRACE("assume_default_colors: %d, %d\n", fore, back); 445 #endif 446 /* Swap red/blue and yellow/cyan */ 447 if (_cursesi_screen->color_type == COLOR_OTHER) { 448 switch (fore) { 449 case COLOR_RED: 450 fore = COLOR_BLUE; 451 break; 452 case COLOR_BLUE: 453 fore = COLOR_RED; 454 break; 455 case COLOR_YELLOW: 456 fore = COLOR_CYAN; 457 break; 458 case COLOR_CYAN: 459 fore = COLOR_YELLOW; 460 break; 461 } 462 switch (back) { 463 case COLOR_RED: 464 back = COLOR_BLUE; 465 break; 466 case COLOR_BLUE: 467 back = COLOR_RED; 468 break; 469 case COLOR_YELLOW: 470 back = COLOR_CYAN; 471 break; 472 case COLOR_CYAN: 473 back = COLOR_YELLOW; 474 break; 475 } 476 } 477 __default_pair.fore = fore; 478 __default_pair.back = back; 479 __default_pair.flags = __USED; 480 481 if (COLOR_PAIRS) { 482 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore = fore; 483 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back = back; 484 _cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags = __USED; 485 } 486 487 /* 488 * If we've already called start_color(), make sure all instances 489 * of the curses default colour pair are dirty. 490 */ 491 if (__using_color) 492 __change_pair(PAIR_NUMBER(__default_color)); 493 494 return(OK); 495 } 496 497 /* 498 * no_color_video -- 499 * Return attributes that cannot be combined with color. 500 */ 501 attr_t 502 no_color_video(void) 503 { 504 return(_cursesi_screen->nca); 505 } 506 507 /* 508 * __set_color -- 509 * Set terminal foreground and background colours. 510 */ 511 void 512 __set_color( /*ARGSUSED*/ WINDOW *win, attr_t attr) 513 { 514 short pair; 515 516 if ((curscr->wattr & __COLOR) == (attr & __COLOR)) 517 return; 518 519 pair = PAIR_NUMBER((u_int32_t)attr); 520 #ifdef DEBUG 521 __CTRACE("__set_color: %d, %d, %d\n", pair, 522 _cursesi_screen->colour_pairs[pair].fore, 523 _cursesi_screen->colour_pairs[pair].back); 524 #endif 525 switch (_cursesi_screen->color_type) { 526 /* Set ANSI forground and background colours */ 527 case COLOR_ANSI: 528 if (_cursesi_screen->colour_pairs[pair].fore < 0 || 529 _cursesi_screen->colour_pairs[pair].back < 0) 530 __unset_color(curscr); 531 if (_cursesi_screen->colour_pairs[pair].fore >= 0) 532 tputs(__parse_cap(_cursesi_screen->tc_AF, 533 _cursesi_screen->colour_pairs[pair].fore), 534 0, __cputchar); 535 if (_cursesi_screen->colour_pairs[pair].back >= 0) 536 tputs(__parse_cap(_cursesi_screen->tc_AB, 537 _cursesi_screen->colour_pairs[pair].back), 538 0, __cputchar); 539 break; 540 case COLOR_HP: 541 /* XXX: need to support HP style */ 542 break; 543 case COLOR_TEK: 544 /* XXX: need to support Tek style */ 545 break; 546 case COLOR_OTHER: 547 if (_cursesi_screen->colour_pairs[pair].fore < 0 || 548 _cursesi_screen->colour_pairs[pair].back < 0) 549 __unset_color(curscr); 550 if (_cursesi_screen->colour_pairs[pair].fore >= 0) 551 tputs(__parse_cap(_cursesi_screen->tc_Sf, 552 _cursesi_screen->colour_pairs[pair].fore), 553 0, __cputchar); 554 if (_cursesi_screen->colour_pairs[pair].back >= 0) 555 tputs(__parse_cap(_cursesi_screen->tc_Sb, 556 _cursesi_screen->colour_pairs[pair].back), 557 0, __cputchar); 558 break; 559 } 560 curscr->wattr &= ~__COLOR; 561 curscr->wattr |= attr & __COLOR; 562 } 563 564 /* 565 * __unset_color -- 566 * Clear terminal foreground and background colours. 567 */ 568 void 569 __unset_color(WINDOW *win) 570 { 571 #ifdef DEBUG 572 __CTRACE("__unset_color\n"); 573 #endif 574 switch (_cursesi_screen->color_type) { 575 /* Clear ANSI forground and background colours */ 576 case COLOR_ANSI: 577 if (__tc_op != NULL) { 578 tputs(__tc_op, 0, __cputchar); 579 win->wattr &= __mask_op; 580 } 581 break; 582 case COLOR_HP: 583 /* XXX: need to support HP style */ 584 break; 585 case COLOR_TEK: 586 /* XXX: need to support Tek style */ 587 break; 588 case COLOR_OTHER: 589 if (__tc_op != NULL) { 590 tputs(__tc_op, 0, __cputchar); 591 win->wattr &= __mask_op; 592 } 593 break; 594 } 595 } 596 597 /* 598 * __restore_colors -- 599 * Redo color definitions after restarting 'curses' mode. 600 */ 601 void 602 __restore_colors(void) 603 { 604 if (__tc_cc != 0) 605 switch (_cursesi_screen->color_type) { 606 case COLOR_HP: 607 /* XXX: need to re-initialise HP style (Ip) */ 608 break; 609 case COLOR_TEK: 610 /* XXX: need to re-initialise Tek style (Ic) */ 611 break; 612 } 613 } 614 615 /* 616 * __change_pair -- 617 * Mark dirty all positions using pair. 618 */ 619 void 620 __change_pair(short pair) 621 { 622 struct __winlist *wlp; 623 WINDOW *win; 624 int y, x; 625 __LINE *lp; 626 uint32_t cl = COLOR_PAIR(pair); 627 628 629 for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) { 630 #ifdef DEBUG 631 __CTRACE("__change_pair: win = %p\n", wlp->winp); 632 #endif 633 win = wlp->winp; 634 if (win == __virtscr) 635 continue; 636 else if (win == curscr) { 637 /* Reset colour attribute on curscr */ 638 #ifdef DEBUG 639 __CTRACE("__change_pair: win == curscr\n"); 640 #endif 641 for (y = 0; y < curscr->maxy; y++) { 642 lp = curscr->lines[y]; 643 for (x = 0; x < curscr->maxx; x++) { 644 if ((lp->line[x].attr & __COLOR) == cl) 645 lp->line[x].attr &= ~__COLOR; 646 } 647 } 648 } else { 649 /* Mark dirty those positions with colour pair "pair" */ 650 for (y = 0; y < win->maxy; y++) { 651 lp = curscr->lines[y]; 652 for (x = 0; x < win->maxx; x++) 653 if ((lp->line[x].attr & 654 __COLOR) == cl) { 655 if (!(lp->flags & __ISDIRTY)) 656 lp->flags |= __ISDIRTY; 657 /* 658 * firstchp/lastchp are shared 659 * between parent window and 660 * sub-window. 661 */ 662 if (*lp->firstchp > x) 663 *lp->firstchp = x; 664 if (*lp->lastchp < x) 665 *lp->lastchp = x; 666 } 667 #ifdef DEBUG 668 if ((win->lines[y]->flags & __ISDIRTY)) 669 __CTRACE("__change_pair: first = %d, last = %d\n", *win->lines[y]->firstchp, *win->lines[y]->lastchp); 670 #endif 671 } 672 } 673 } 674 } 675
Indexes created Wed Sep 24 02:09:48 GMT 2025