1 /* $OpenBSD: tty.c,v 1.390 2021/03/12 08:39:17 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/ioctl.h> 21 22 #include <netinet/in.h> 23 24 #include <curses.h> 25 #include <errno.h> 26 #include <fcntl.h> 27 #include <resolv.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include <termios.h> 31 #include <unistd.h> 32 33 #include "tmux.h" 34 35 static int tty_log_fd = -1; 36 37 static int tty_client_ready(struct client *); 38 39 static void tty_set_italics(struct tty *); 40 static int tty_try_colour(struct tty *, int, const char *); 41 static void tty_force_cursor_colour(struct tty *, const char *); 42 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int, 43 u_int); 44 static void tty_cursor_pane_unless_wrap(struct tty *, 45 const struct tty_ctx *, u_int, u_int); 46 static void tty_invalidate(struct tty *); 47 static void tty_colours(struct tty *, const struct grid_cell *); 48 static void tty_check_fg(struct tty *, int *, struct grid_cell *); 49 static void tty_check_bg(struct tty *, int *, struct grid_cell *); 50 static void tty_check_us(struct tty *, int *, struct grid_cell *); 51 static void tty_colours_fg(struct tty *, const struct grid_cell *); 52 static void tty_colours_bg(struct tty *, const struct grid_cell *); 53 static void tty_colours_us(struct tty *, const struct grid_cell *); 54 55 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int, 56 u_int); 57 static void tty_region(struct tty *, u_int, u_int); 58 static void tty_margin_pane(struct tty *, const struct tty_ctx *); 59 static void tty_margin(struct tty *, u_int, u_int); 60 static int tty_large_region(struct tty *, const struct tty_ctx *); 61 static int tty_fake_bce(const struct tty *, const struct grid_cell *, 62 u_int); 63 static void tty_redraw_region(struct tty *, const struct tty_ctx *); 64 static void tty_emulate_repeat(struct tty *, enum tty_code_code, 65 enum tty_code_code, u_int); 66 static void tty_repeat_space(struct tty *, u_int); 67 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int); 68 static void tty_default_attributes(struct tty *, const struct grid_cell *, 69 int *, u_int); 70 71 #define tty_use_margin(tty) \ 72 (tty->term->flags & TERM_DECSLRM) 73 #define tty_full_width(tty, ctx) \ 74 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx) 75 76 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */) 77 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8) 78 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8) 79 80 void 81 tty_create_log(void) 82 { 83 char name[64]; 84 85 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid()); 86 87 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644); 88 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1) 89 fatal("fcntl failed"); 90 } 91 92 int 93 tty_init(struct tty *tty, struct client *c) 94 { 95 if (!isatty(c->fd)) 96 return (-1); 97 98 memset(tty, 0, sizeof *tty); 99 tty->client = c; 100 101 tty->cstyle = 0; 102 tty->ccolour = xstrdup(""); 103 104 if (tcgetattr(c->fd, &tty->tio) != 0) 105 return (-1); 106 return (0); 107 } 108 109 void 110 tty_resize(struct tty *tty) 111 { 112 struct client *c = tty->client; 113 struct winsize ws; 114 u_int sx, sy, xpixel, ypixel; 115 116 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) { 117 sx = ws.ws_col; 118 if (sx == 0) { 119 sx = 80; 120 xpixel = 0; 121 } else 122 xpixel = ws.ws_xpixel / sx; 123 sy = ws.ws_row; 124 if (sy == 0) { 125 sy = 24; 126 ypixel = 0; 127 } else 128 ypixel = ws.ws_ypixel / sy; 129 } else { 130 sx = 80; 131 sy = 24; 132 xpixel = 0; 133 ypixel = 0; 134 } 135 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy, 136 xpixel, ypixel); 137 tty_set_size(tty, sx, sy, xpixel, ypixel); 138 tty_invalidate(tty); 139 } 140 141 void 142 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel) 143 { 144 tty->sx = sx; 145 tty->sy = sy; 146 tty->xpixel = xpixel; 147 tty->ypixel = ypixel; 148 } 149 150 static void 151 tty_read_callback(__unused int fd, __unused short events, void *data) 152 { 153 struct tty *tty = data; 154 struct client *c = tty->client; 155 const char *name = c->name; 156 size_t size = EVBUFFER_LENGTH(tty->in); 157 int nread; 158 159 nread = evbuffer_read(tty->in, c->fd, -1); 160 if (nread == 0 || nread == -1) { 161 if (nread == 0) 162 log_debug("%s: read closed", name); 163 else 164 log_debug("%s: read error: %s", name, strerror(errno)); 165 event_del(&tty->event_in); 166 server_client_lost(tty->client); 167 return; 168 } 169 log_debug("%s: read %d bytes (already %zu)", name, nread, size); 170 171 while (tty_keys_next(tty)) 172 ; 173 } 174 175 static void 176 tty_timer_callback(__unused int fd, __unused short events, void *data) 177 { 178 struct tty *tty = data; 179 struct client *c = tty->client; 180 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 181 182 log_debug("%s: %zu discarded", c->name, tty->discarded); 183 184 c->flags |= CLIENT_ALLREDRAWFLAGS; 185 c->discarded += tty->discarded; 186 187 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 188 tty->flags &= ~TTY_BLOCK; 189 tty_invalidate(tty); 190 return; 191 } 192 tty->discarded = 0; 193 evtimer_add(&tty->timer, &tv); 194 } 195 196 static int 197 tty_block_maybe(struct tty *tty) 198 { 199 struct client *c = tty->client; 200 size_t size = EVBUFFER_LENGTH(tty->out); 201 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 202 203 if (size < TTY_BLOCK_START(tty)) 204 return (0); 205 206 if (tty->flags & TTY_BLOCK) 207 return (1); 208 tty->flags |= TTY_BLOCK; 209 210 log_debug("%s: can't keep up, %zu discarded", c->name, size); 211 212 evbuffer_drain(tty->out, size); 213 c->discarded += size; 214 215 tty->discarded = 0; 216 evtimer_add(&tty->timer, &tv); 217 return (1); 218 } 219 220 static void 221 tty_write_callback(__unused int fd, __unused short events, void *data) 222 { 223 struct tty *tty = data; 224 struct client *c = tty->client; 225 size_t size = EVBUFFER_LENGTH(tty->out); 226 int nwrite; 227 228 nwrite = evbuffer_write(tty->out, c->fd); 229 if (nwrite == -1) 230 return; 231 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 232 233 if (c->redraw > 0) { 234 if ((size_t)nwrite >= c->redraw) 235 c->redraw = 0; 236 else 237 c->redraw -= nwrite; 238 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 239 c->redraw); 240 } else if (tty_block_maybe(tty)) 241 return; 242 243 if (EVBUFFER_LENGTH(tty->out) != 0) 244 event_add(&tty->event_out, NULL); 245 } 246 247 int 248 tty_open(struct tty *tty, char **cause) 249 { 250 struct client *c = tty->client; 251 252 tty->term = tty_term_create(tty, c->term_name, c->term_caps, 253 c->term_ncaps, &c->term_features, cause); 254 if (tty->term == NULL) { 255 tty_close(tty); 256 return (-1); 257 } 258 tty->flags |= TTY_OPENED; 259 260 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 261 262 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ, 263 tty_read_callback, tty); 264 tty->in = evbuffer_new(); 265 if (tty->in == NULL) 266 fatal("out of memory"); 267 268 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty); 269 tty->out = evbuffer_new(); 270 if (tty->out == NULL) 271 fatal("out of memory"); 272 273 evtimer_set(&tty->timer, tty_timer_callback, tty); 274 275 tty_start_tty(tty); 276 277 tty_keys_build(tty); 278 279 return (0); 280 } 281 282 static void 283 tty_start_timer_callback(__unused int fd, __unused short events, void *data) 284 { 285 struct tty *tty = data; 286 struct client *c = tty->client; 287 288 log_debug("%s: start timer fired", c->name); 289 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEXDA)) == 0) 290 tty_update_features(tty); 291 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA); 292 } 293 294 void 295 tty_start_tty(struct tty *tty) 296 { 297 struct client *c = tty->client; 298 struct termios tio; 299 struct timeval tv = { .tv_sec = 1 }; 300 301 setblocking(c->fd, 0); 302 event_add(&tty->event_in, NULL); 303 304 memcpy(&tio, &tty->tio, sizeof tio); 305 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 306 tio.c_iflag |= IGNBRK; 307 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 308 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT| 309 ECHOKE|ISIG); 310 tio.c_cc[VMIN] = 1; 311 tio.c_cc[VTIME] = 0; 312 if (tcsetattr(c->fd, TCSANOW, &tio) == 0) 313 tcflush(c->fd, TCIOFLUSH); 314 315 tty_putcode(tty, TTYC_SMCUP); 316 317 tty_putcode(tty, TTYC_SMKX); 318 tty_putcode(tty, TTYC_CLEAR); 319 320 if (tty_acs_needed(tty)) { 321 log_debug("%s: using capabilities for ACS", c->name); 322 tty_putcode(tty, TTYC_ENACS); 323 } else 324 log_debug("%s: using UTF-8 for ACS", c->name); 325 326 tty_putcode(tty, TTYC_CNORM); 327 if (tty_term_has(tty->term, TTYC_KMOUS)) { 328 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l"); 329 tty_puts(tty, "\033[?1006l\033[?1005l"); 330 } 331 332 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 333 evtimer_add(&tty->start_timer, &tv); 334 335 tty->flags |= TTY_STARTED; 336 tty_invalidate(tty); 337 338 if (*tty->ccolour != '\0') 339 tty_force_cursor_colour(tty, ""); 340 341 tty->mouse_drag_flag = 0; 342 tty->mouse_drag_update = NULL; 343 tty->mouse_drag_release = NULL; 344 } 345 346 void 347 tty_send_requests(struct tty *tty) 348 { 349 if (~tty->flags & TTY_STARTED) 350 return; 351 352 if (tty->term->flags & TERM_VT100LIKE) { 353 if (~tty->flags & TTY_HAVEDA) 354 tty_puts(tty, "\033[>c"); 355 if (~tty->flags & TTY_HAVEXDA) 356 tty_puts(tty, "\033[>q"); 357 } else 358 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA); 359 } 360 361 void 362 tty_stop_tty(struct tty *tty) 363 { 364 struct client *c = tty->client; 365 struct winsize ws; 366 367 if (!(tty->flags & TTY_STARTED)) 368 return; 369 tty->flags &= ~TTY_STARTED; 370 371 evtimer_del(&tty->start_timer); 372 373 event_del(&tty->timer); 374 tty->flags &= ~TTY_BLOCK; 375 376 event_del(&tty->event_in); 377 event_del(&tty->event_out); 378 379 /* 380 * Be flexible about error handling and try not kill the server just 381 * because the fd is invalid. Things like ssh -t can easily leave us 382 * with a dead tty. 383 */ 384 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 385 return; 386 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 387 return; 388 389 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 390 if (tty_acs_needed(tty)) 391 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 392 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 393 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 394 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 395 if (tty_term_has(tty->term, TTYC_SS) && tty->cstyle != 0) { 396 if (tty_term_has(tty->term, TTYC_SE)) 397 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 398 else 399 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0)); 400 } 401 if (tty->mode & MODE_BRACKETPASTE) 402 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 403 if (*tty->ccolour != '\0') 404 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 405 406 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 407 if (tty_term_has(tty->term, TTYC_KMOUS)) { 408 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 409 tty_raw(tty, "\033[?1006l\033[?1005l"); 410 } 411 412 if (tty->term->flags & TERM_VT100LIKE) 413 tty_raw(tty, "\033[?7727l"); 414 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 415 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 416 417 if (tty_use_margin(tty)) 418 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 419 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 420 421 setblocking(c->fd, 1); 422 } 423 424 void 425 tty_close(struct tty *tty) 426 { 427 if (event_initialized(&tty->key_timer)) 428 evtimer_del(&tty->key_timer); 429 tty_stop_tty(tty); 430 431 if (tty->flags & TTY_OPENED) { 432 evbuffer_free(tty->in); 433 event_del(&tty->event_in); 434 evbuffer_free(tty->out); 435 event_del(&tty->event_out); 436 437 tty_term_free(tty->term); 438 tty_keys_free(tty); 439 440 tty->flags &= ~TTY_OPENED; 441 } 442 } 443 444 void 445 tty_free(struct tty *tty) 446 { 447 tty_close(tty); 448 free(tty->ccolour); 449 } 450 451 void 452 tty_update_features(struct tty *tty) 453 { 454 struct client *c = tty->client; 455 456 if (tty_apply_features(tty->term, c->term_features)) 457 tty_term_apply_overrides(tty->term); 458 459 if (tty_use_margin(tty)) 460 tty_putcode(tty, TTYC_ENMG); 461 if (options_get_number(global_options, "extended-keys")) 462 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 463 if (options_get_number(global_options, "focus-events")) 464 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 465 if (tty->term->flags & TERM_VT100LIKE) 466 tty_puts(tty, "\033[?7727h"); 467 } 468 469 void 470 tty_raw(struct tty *tty, const char *s) 471 { 472 struct client *c = tty->client; 473 ssize_t n, slen; 474 u_int i; 475 476 slen = strlen(s); 477 for (i = 0; i < 5; i++) { 478 n = write(c->fd, s, slen); 479 if (n >= 0) { 480 s += n; 481 slen -= n; 482 if (slen == 0) 483 break; 484 } else if (n == -1 && errno != EAGAIN) 485 break; 486 usleep(100); 487 } 488 } 489 490 void 491 tty_putcode(struct tty *tty, enum tty_code_code code) 492 { 493 tty_puts(tty, tty_term_string(tty->term, code)); 494 } 495 496 void 497 tty_putcode1(struct tty *tty, enum tty_code_code code, int a) 498 { 499 if (a < 0) 500 return; 501 tty_puts(tty, tty_term_string1(tty->term, code, a)); 502 } 503 504 void 505 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b) 506 { 507 if (a < 0 || b < 0) 508 return; 509 tty_puts(tty, tty_term_string2(tty->term, code, a, b)); 510 } 511 512 void 513 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c) 514 { 515 if (a < 0 || b < 0 || c < 0) 516 return; 517 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c)); 518 } 519 520 void 521 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a) 522 { 523 if (a != NULL) 524 tty_puts(tty, tty_term_ptr1(tty->term, code, a)); 525 } 526 527 void 528 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a, 529 const void *b) 530 { 531 if (a != NULL && b != NULL) 532 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b)); 533 } 534 535 static void 536 tty_add(struct tty *tty, const char *buf, size_t len) 537 { 538 struct client *c = tty->client; 539 540 if (tty->flags & TTY_BLOCK) { 541 tty->discarded += len; 542 return; 543 } 544 545 evbuffer_add(tty->out, buf, len); 546 log_debug("%s: %.*s", c->name, (int)len, buf); 547 c->written += len; 548 549 if (tty_log_fd != -1) 550 write(tty_log_fd, buf, len); 551 if (tty->flags & TTY_STARTED) 552 event_add(&tty->event_out, NULL); 553 } 554 555 void 556 tty_puts(struct tty *tty, const char *s) 557 { 558 if (*s != '\0') 559 tty_add(tty, s, strlen(s)); 560 } 561 562 void 563 tty_putc(struct tty *tty, u_char ch) 564 { 565 const char *acs; 566 567 if ((tty->term->flags & TERM_NOAM) && 568 ch >= 0x20 && ch != 0x7f && 569 tty->cy == tty->sy - 1 && 570 tty->cx + 1 >= tty->sx) 571 return; 572 573 if (tty->cell.attr & GRID_ATTR_CHARSET) { 574 acs = tty_acs_get(tty, ch); 575 if (acs != NULL) 576 tty_add(tty, acs, strlen(acs)); 577 else 578 tty_add(tty, &ch, 1); 579 } else 580 tty_add(tty, &ch, 1); 581 582 if (ch >= 0x20 && ch != 0x7f) { 583 if (tty->cx >= tty->sx) { 584 tty->cx = 1; 585 if (tty->cy != tty->rlower) 586 tty->cy++; 587 588 /* 589 * On !am terminals, force the cursor position to where 590 * we think it should be after a line wrap - this means 591 * it works on sensible terminals as well. 592 */ 593 if (tty->term->flags & TERM_NOAM) 594 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx); 595 } else 596 tty->cx++; 597 } 598 } 599 600 void 601 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 602 { 603 if ((tty->term->flags & TERM_NOAM) && 604 tty->cy == tty->sy - 1 && 605 tty->cx + len >= tty->sx) 606 len = tty->sx - tty->cx - 1; 607 608 tty_add(tty, buf, len); 609 if (tty->cx + width > tty->sx) { 610 tty->cx = (tty->cx + width) - tty->sx; 611 if (tty->cx <= tty->sx) 612 tty->cy++; 613 else 614 tty->cx = tty->cy = UINT_MAX; 615 } else 616 tty->cx += width; 617 } 618 619 static void 620 tty_set_italics(struct tty *tty) 621 { 622 const char *s; 623 624 if (tty_term_has(tty->term, TTYC_SITM)) { 625 s = options_get_string(global_options, "default-terminal"); 626 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 627 tty_putcode(tty, TTYC_SITM); 628 return; 629 } 630 } 631 tty_putcode(tty, TTYC_SMSO); 632 } 633 634 void 635 tty_set_title(struct tty *tty, const char *title) 636 { 637 if (!tty_term_has(tty->term, TTYC_TSL) || 638 !tty_term_has(tty->term, TTYC_FSL)) 639 return; 640 641 tty_putcode(tty, TTYC_TSL); 642 tty_puts(tty, title); 643 tty_putcode(tty, TTYC_FSL); 644 } 645 646 static void 647 tty_force_cursor_colour(struct tty *tty, const char *ccolour) 648 { 649 if (*ccolour == '\0') 650 tty_putcode(tty, TTYC_CR); 651 else 652 tty_putcode_ptr1(tty, TTYC_CS, ccolour); 653 free(tty->ccolour); 654 tty->ccolour = xstrdup(ccolour); 655 } 656 657 void 658 tty_update_mode(struct tty *tty, int mode, struct screen *s) 659 { 660 struct client *c = tty->client; 661 int changed; 662 663 if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0) 664 tty_force_cursor_colour(tty, s->ccolour); 665 666 if (tty->flags & TTY_NOCURSOR) 667 mode &= ~MODE_CURSOR; 668 669 changed = mode ^ tty->mode; 670 if (changed != 0) 671 log_debug("%s: update mode %x to %x", c->name, tty->mode, mode); 672 673 /* 674 * The cursor blinking flag can be reset by setting the cursor style, so 675 * set the style first. 676 */ 677 if (s != NULL && tty->cstyle != s->cstyle) { 678 if (tty_term_has(tty->term, TTYC_SS)) { 679 if (s->cstyle == 0 && tty_term_has(tty->term, TTYC_SE)) 680 tty_putcode(tty, TTYC_SE); 681 else 682 tty_putcode1(tty, TTYC_SS, s->cstyle); 683 } 684 tty->cstyle = s->cstyle; 685 changed |= (MODE_CURSOR|MODE_BLINKING); 686 } 687 688 /* 689 * Cursor invisible (RM ?25) overrides cursor blinking (SM ?12 or RM 690 * 34), and we need to be careful not send cnorm after cvvis since it 691 * can undo it. 692 */ 693 if (changed & (MODE_CURSOR|MODE_BLINKING)) { 694 log_debug("%s: cursor %s, %sblinking", __func__, 695 (mode & MODE_CURSOR) ? "on" : "off", 696 (mode & MODE_BLINKING) ? "" : "not "); 697 if (~mode & MODE_CURSOR) 698 tty_putcode(tty, TTYC_CIVIS); 699 else if (mode & MODE_BLINKING) { 700 tty_putcode(tty, TTYC_CNORM); 701 if (tty_term_has(tty->term, TTYC_CVVIS)) 702 tty_putcode(tty, TTYC_CVVIS); 703 } else 704 tty_putcode(tty, TTYC_CNORM); 705 } 706 707 if ((changed & ALL_MOUSE_MODES) && 708 tty_term_has(tty->term, TTYC_KMOUS)) { 709 /* 710 * If the mouse modes have changed, clear any that are set and 711 * apply again. There are differences in how terminals track 712 * the various bits. 713 */ 714 if (tty->mode & MODE_MOUSE_SGR) 715 tty_puts(tty, "\033[?1006l"); 716 if (tty->mode & MODE_MOUSE_STANDARD) 717 tty_puts(tty, "\033[?1000l"); 718 if (tty->mode & MODE_MOUSE_BUTTON) 719 tty_puts(tty, "\033[?1002l"); 720 if (tty->mode & MODE_MOUSE_ALL) 721 tty_puts(tty, "\033[?1003l"); 722 if (mode & ALL_MOUSE_MODES) 723 tty_puts(tty, "\033[?1006h"); 724 if (mode & MODE_MOUSE_STANDARD) 725 tty_puts(tty, "\033[?1000h"); 726 if (mode & MODE_MOUSE_BUTTON) 727 tty_puts(tty, "\033[?1002h"); 728 if (mode & MODE_MOUSE_ALL) 729 tty_puts(tty, "\033[?1003h"); 730 } 731 if (changed & MODE_BRACKETPASTE) { 732 if (mode & MODE_BRACKETPASTE) 733 tty_putcode(tty, TTYC_ENBP); 734 else 735 tty_putcode(tty, TTYC_DSBP); 736 } 737 tty->mode = mode; 738 } 739 740 static void 741 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 742 enum tty_code_code code1, u_int n) 743 { 744 if (tty_term_has(tty->term, code)) 745 tty_putcode1(tty, code, n); 746 else { 747 while (n-- > 0) 748 tty_putcode(tty, code1); 749 } 750 } 751 752 static void 753 tty_repeat_space(struct tty *tty, u_int n) 754 { 755 static char s[500]; 756 757 if (*s != ' ') 758 memset(s, ' ', sizeof s); 759 760 while (n > sizeof s) { 761 tty_putn(tty, s, sizeof s, sizeof s); 762 n -= sizeof s; 763 } 764 if (n != 0) 765 tty_putn(tty, s, n, n); 766 } 767 768 /* Is this window bigger than the terminal? */ 769 int 770 tty_window_bigger(struct tty *tty) 771 { 772 struct client *c = tty->client; 773 struct window *w = c->session->curw->window; 774 775 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 776 } 777 778 /* What offset should this window be drawn at? */ 779 int 780 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 781 { 782 *ox = tty->oox; 783 *oy = tty->ooy; 784 *sx = tty->osx; 785 *sy = tty->osy; 786 787 return (tty->oflag); 788 } 789 790 /* What offset should this window be drawn at? */ 791 static int 792 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 793 { 794 struct client *c = tty->client; 795 struct window *w = c->session->curw->window; 796 struct window_pane *wp = server_client_get_pane(c); 797 u_int cx, cy, lines; 798 799 lines = status_line_size(c); 800 801 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 802 *ox = 0; 803 *oy = 0; 804 *sx = w->sx; 805 *sy = w->sy; 806 807 c->pan_window = NULL; 808 return (0); 809 } 810 811 *sx = tty->sx; 812 *sy = tty->sy - lines; 813 814 if (c->pan_window == w) { 815 if (*sx >= w->sx) 816 c->pan_ox = 0; 817 else if (c->pan_ox + *sx > w->sx) 818 c->pan_ox = w->sx - *sx; 819 *ox = c->pan_ox; 820 if (*sy >= w->sy) 821 c->pan_oy = 0; 822 else if (c->pan_oy + *sy > w->sy) 823 c->pan_oy = w->sy - *sy; 824 *oy = c->pan_oy; 825 return (1); 826 } 827 828 if (~wp->screen->mode & MODE_CURSOR) { 829 *ox = 0; 830 *oy = 0; 831 } else { 832 cx = wp->xoff + wp->screen->cx; 833 cy = wp->yoff + wp->screen->cy; 834 835 if (cx < *sx) 836 *ox = 0; 837 else if (cx > w->sx - *sx) 838 *ox = w->sx - *sx; 839 else 840 *ox = cx - *sx / 2; 841 842 if (cy < *sy) 843 *oy = 0; 844 else if (cy > w->sy - *sy) 845 *oy = w->sy - *sy; 846 else 847 *oy = cy - *sy / 2; 848 } 849 850 c->pan_window = NULL; 851 return (1); 852 } 853 854 /* Update stored offsets for a window and redraw if necessary. */ 855 void 856 tty_update_window_offset(struct window *w) 857 { 858 struct client *c; 859 860 TAILQ_FOREACH(c, &clients, entry) { 861 if (c->session != NULL && c->session->curw->window == w) 862 tty_update_client_offset(c); 863 } 864 } 865 866 /* Update stored offsets for a client and redraw if necessary. */ 867 void 868 tty_update_client_offset(struct client *c) 869 { 870 u_int ox, oy, sx, sy; 871 872 if (~c->flags & CLIENT_TERMINAL) 873 return; 874 875 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 876 if (ox == c->tty.oox && 877 oy == c->tty.ooy && 878 sx == c->tty.osx && 879 sy == c->tty.osy) 880 return; 881 882 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 883 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 884 ox, oy, sx, sy); 885 886 c->tty.oox = ox; 887 c->tty.ooy = oy; 888 c->tty.osx = sx; 889 c->tty.osy = sy; 890 891 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 892 } 893 894 /* Get a palette entry. */ 895 static int 896 tty_get_palette(int *palette, int c) 897 { 898 int new; 899 900 if (palette == NULL) 901 return (-1); 902 903 new = -1; 904 if (c < 8) 905 new = palette[c]; 906 else if (c >= 90 && c <= 97) 907 new = palette[8 + c - 90]; 908 else if (c & COLOUR_FLAG_256) 909 new = palette[c & ~COLOUR_FLAG_256]; 910 if (new == 0) 911 return (-1); 912 return (new); 913 } 914 915 /* 916 * Is the region large enough to be worth redrawing once later rather than 917 * probably several times now? Currently yes if it is more than 50% of the 918 * pane. 919 */ 920 static int 921 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 922 { 923 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 924 } 925 926 /* 927 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 928 * emulated. 929 */ 930 static int 931 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 932 { 933 if (tty_term_flag(tty->term, TTYC_BCE)) 934 return (0); 935 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 936 return (1); 937 return (0); 938 } 939 940 /* 941 * Redraw scroll region using data from screen (already updated). Used when 942 * CSR not supported, or window is a pane that doesn't take up the full 943 * width of the terminal. 944 */ 945 static void 946 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 947 { 948 struct client *c = tty->client; 949 u_int i; 950 951 /* 952 * If region is large, schedule a redraw. In most cases this is likely 953 * to be followed by some more scrolling. 954 */ 955 if (tty_large_region(tty, ctx)) { 956 log_debug("%s: %s large redraw", __func__, c->name); 957 ctx->redraw_cb(ctx); 958 return; 959 } 960 961 if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) { 962 for (i = ctx->ocy; i < ctx->sy; i++) 963 tty_draw_pane(tty, ctx, i); 964 } else { 965 for (i = ctx->orupper; i <= ctx->orlower; i++) 966 tty_draw_pane(tty, ctx, i); 967 } 968 } 969 970 /* Is this position visible in the pane? */ 971 static int 972 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 973 u_int py, u_int nx, u_int ny) 974 { 975 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 976 977 if (!ctx->bigger) 978 return (1); 979 980 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 981 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 982 return (0); 983 return (1); 984 } 985 986 /* Clamp line position to visible part of pane. */ 987 static int 988 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 989 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 990 { 991 u_int xoff = ctx->rxoff + px; 992 993 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 994 return (0); 995 *ry = ctx->yoff + py - ctx->woy; 996 997 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 998 /* All visible. */ 999 *i = 0; 1000 *x = ctx->xoff + px - ctx->wox; 1001 *rx = nx; 1002 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1003 /* Both left and right not visible. */ 1004 *i = ctx->wox; 1005 *x = 0; 1006 *rx = ctx->wsx; 1007 } else if (xoff < ctx->wox) { 1008 /* Left not visible. */ 1009 *i = ctx->wox - (ctx->xoff + px); 1010 *x = 0; 1011 *rx = nx - *i; 1012 } else { 1013 /* Right not visible. */ 1014 *i = 0; 1015 *x = (ctx->xoff + px) - ctx->wox; 1016 *rx = ctx->wsx - *x; 1017 } 1018 if (*rx > nx) 1019 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1020 1021 return (1); 1022 } 1023 1024 /* Clear a line. */ 1025 static void 1026 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1027 u_int px, u_int nx, u_int bg) 1028 { 1029 struct client *c = tty->client; 1030 1031 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1032 1033 /* Nothing to clear. */ 1034 if (nx == 0) 1035 return; 1036 1037 /* If genuine BCE is available, can try escape sequences. */ 1038 if (!tty_fake_bce(tty, defaults, bg)) { 1039 /* Off the end of the line, use EL if available. */ 1040 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1041 tty_cursor(tty, px, py); 1042 tty_putcode(tty, TTYC_EL); 1043 return; 1044 } 1045 1046 /* At the start of the line. Use EL1. */ 1047 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1048 tty_cursor(tty, px + nx - 1, py); 1049 tty_putcode(tty, TTYC_EL1); 1050 return; 1051 } 1052 1053 /* Section of line. Use ECH if possible. */ 1054 if (tty_term_has(tty->term, TTYC_ECH)) { 1055 tty_cursor(tty, px, py); 1056 tty_putcode1(tty, TTYC_ECH, nx); 1057 return; 1058 } 1059 } 1060 1061 /* Couldn't use an escape sequence, use spaces. */ 1062 tty_cursor(tty, px, py); 1063 tty_repeat_space(tty, nx); 1064 } 1065 1066 /* Clear a line, adjusting to visible part of pane. */ 1067 static void 1068 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1069 u_int px, u_int nx, u_int bg) 1070 { 1071 struct client *c = tty->client; 1072 u_int i, x, rx, ry; 1073 1074 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1075 1076 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1077 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1078 } 1079 1080 /* Clamp area position to visible part of pane. */ 1081 static int 1082 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1083 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1084 u_int *ry) 1085 { 1086 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1087 1088 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1089 return (0); 1090 1091 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1092 /* All visible. */ 1093 *i = 0; 1094 *x = ctx->xoff + px - ctx->wox; 1095 *rx = nx; 1096 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1097 /* Both left and right not visible. */ 1098 *i = ctx->wox; 1099 *x = 0; 1100 *rx = ctx->wsx; 1101 } else if (xoff < ctx->wox) { 1102 /* Left not visible. */ 1103 *i = ctx->wox - (ctx->xoff + px); 1104 *x = 0; 1105 *rx = nx - *i; 1106 } else { 1107 /* Right not visible. */ 1108 *i = 0; 1109 *x = (ctx->xoff + px) - ctx->wox; 1110 *rx = ctx->wsx - *x; 1111 } 1112 if (*rx > nx) 1113 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1114 1115 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1116 /* All visible. */ 1117 *j = 0; 1118 *y = ctx->yoff + py - ctx->woy; 1119 *ry = ny; 1120 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1121 /* Both top and bottom not visible. */ 1122 *j = ctx->woy; 1123 *y = 0; 1124 *ry = ctx->wsy; 1125 } else if (yoff < ctx->woy) { 1126 /* Top not visible. */ 1127 *j = ctx->woy - (ctx->yoff + py); 1128 *y = 0; 1129 *ry = ny - *j; 1130 } else { 1131 /* Bottom not visible. */ 1132 *j = 0; 1133 *y = (ctx->yoff + py) - ctx->woy; 1134 *ry = ctx->wsy - *y; 1135 } 1136 if (*ry > ny) 1137 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1138 1139 return (1); 1140 } 1141 1142 /* Clear an area, adjusting to visible part of pane. */ 1143 static void 1144 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1145 u_int ny, u_int px, u_int nx, u_int bg) 1146 { 1147 struct client *c = tty->client; 1148 u_int yy; 1149 char tmp[64]; 1150 1151 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1152 1153 /* Nothing to clear. */ 1154 if (nx == 0 || ny == 0) 1155 return; 1156 1157 /* If genuine BCE is available, can try escape sequences. */ 1158 if (!tty_fake_bce(tty, defaults, bg)) { 1159 /* Use ED if clearing off the bottom of the terminal. */ 1160 if (px == 0 && 1161 px + nx >= tty->sx && 1162 py + ny >= tty->sy && 1163 tty_term_has(tty->term, TTYC_ED)) { 1164 tty_cursor(tty, 0, py); 1165 tty_putcode(tty, TTYC_ED); 1166 return; 1167 } 1168 1169 /* 1170 * On VT420 compatible terminals we can use DECFRA if the 1171 * background colour isn't default (because it doesn't work 1172 * after SGR 0). 1173 */ 1174 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1175 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1176 py + 1, px + 1, py + ny, px + nx); 1177 tty_puts(tty, tmp); 1178 return; 1179 } 1180 1181 /* Full lines can be scrolled away to clear them. */ 1182 if (px == 0 && 1183 px + nx >= tty->sx && 1184 ny > 2 && 1185 tty_term_has(tty->term, TTYC_CSR) && 1186 tty_term_has(tty->term, TTYC_INDN)) { 1187 tty_region(tty, py, py + ny - 1); 1188 tty_margin_off(tty); 1189 tty_putcode1(tty, TTYC_INDN, ny); 1190 return; 1191 } 1192 1193 /* 1194 * If margins are supported, can just scroll the area off to 1195 * clear it. 1196 */ 1197 if (nx > 2 && 1198 ny > 2 && 1199 tty_term_has(tty->term, TTYC_CSR) && 1200 tty_use_margin(tty) && 1201 tty_term_has(tty->term, TTYC_INDN)) { 1202 tty_region(tty, py, py + ny - 1); 1203 tty_margin(tty, px, px + nx - 1); 1204 tty_putcode1(tty, TTYC_INDN, ny); 1205 return; 1206 } 1207 } 1208 1209 /* Couldn't use an escape sequence, loop over the lines. */ 1210 for (yy = py; yy < py + ny; yy++) 1211 tty_clear_line(tty, defaults, yy, px, nx, bg); 1212 } 1213 1214 /* Clear an area in a pane. */ 1215 static void 1216 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1217 u_int ny, u_int px, u_int nx, u_int bg) 1218 { 1219 u_int i, j, x, y, rx, ry; 1220 1221 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1222 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1223 } 1224 1225 static void 1226 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1227 { 1228 struct screen *s = ctx->s; 1229 u_int nx = ctx->sx, i, x, rx, ry; 1230 1231 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1232 1233 if (!ctx->bigger) { 1234 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1235 &ctx->defaults, ctx->palette); 1236 return; 1237 } 1238 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1239 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1240 ctx->palette); 1241 } 1242 } 1243 1244 static const struct grid_cell * 1245 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1246 { 1247 static struct grid_cell new; 1248 int c; 1249 1250 /* Characters less than 0x7f are always fine, no matter what. */ 1251 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1252 return (gc); 1253 1254 /* UTF-8 terminal and a UTF-8 character - fine. */ 1255 if (tty->client->flags & CLIENT_UTF8) 1256 return (gc); 1257 memcpy(&new, gc, sizeof new); 1258 1259 /* See if this can be mapped to an ACS character. */ 1260 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1261 if (c != -1) { 1262 utf8_set(&new.data, c); 1263 new.attr |= GRID_ATTR_CHARSET; 1264 return (&new); 1265 } 1266 1267 /* Replace by the right number of underscores. */ 1268 new.data.size = gc->data.width; 1269 if (new.data.size > UTF8_SIZE) 1270 new.data.size = UTF8_SIZE; 1271 memset(new.data.data, '_', new.data.size); 1272 return (&new); 1273 } 1274 1275 static int 1276 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1277 { 1278 struct client *c = tty->client; 1279 1280 if (c->overlay_check == NULL) 1281 return (1); 1282 return (c->overlay_check(c, px, py)); 1283 } 1284 1285 void 1286 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1287 u_int atx, u_int aty, const struct grid_cell *defaults, int *palette) 1288 { 1289 struct grid *gd = s->grid; 1290 struct grid_cell gc, last; 1291 const struct grid_cell *gcp; 1292 struct grid_line *gl; 1293 u_int i, j, ux, sx, width; 1294 int flags, cleared = 0, wrapped = 0; 1295 char buf[512]; 1296 size_t len; 1297 u_int cellsize; 1298 1299 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1300 px, py, nx, atx, aty); 1301 1302 /* 1303 * py is the line in the screen to draw. 1304 * px is the start x and nx is the width to draw. 1305 * atx,aty is the line on the terminal to draw it. 1306 */ 1307 1308 flags = (tty->flags & TTY_NOCURSOR); 1309 tty->flags |= TTY_NOCURSOR; 1310 tty_update_mode(tty, tty->mode, s); 1311 1312 tty_region_off(tty); 1313 tty_margin_off(tty); 1314 1315 /* 1316 * Clamp the width to cellsize - note this is not cellused, because 1317 * there may be empty background cells after it (from BCE). 1318 */ 1319 sx = screen_size_x(s); 1320 if (nx > sx) 1321 nx = sx; 1322 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1323 if (sx > cellsize) 1324 sx = cellsize; 1325 if (sx > tty->sx) 1326 sx = tty->sx; 1327 if (sx > nx) 1328 sx = nx; 1329 ux = 0; 1330 1331 if (py == 0) 1332 gl = NULL; 1333 else 1334 gl = grid_get_line(gd, gd->hsize + py - 1); 1335 if (gl == NULL || 1336 (~gl->flags & GRID_LINE_WRAPPED) || 1337 atx != 0 || 1338 tty->cx < tty->sx || 1339 nx < tty->sx) { 1340 if (nx < tty->sx && 1341 atx == 0 && 1342 px + sx != nx && 1343 tty_term_has(tty->term, TTYC_EL1) && 1344 !tty_fake_bce(tty, defaults, 8)) { 1345 tty_default_attributes(tty, defaults, palette, 8); 1346 tty_cursor(tty, nx - 1, aty); 1347 tty_putcode(tty, TTYC_EL1); 1348 cleared = 1; 1349 } 1350 } else { 1351 log_debug("%s: wrapped line %u", __func__, aty); 1352 wrapped = 1; 1353 } 1354 1355 memcpy(&last, &grid_default_cell, sizeof last); 1356 len = 0; 1357 width = 0; 1358 1359 for (i = 0; i < sx; i++) { 1360 grid_view_get_cell(gd, px + i, py, &gc); 1361 gcp = tty_check_codeset(tty, &gc); 1362 if (len != 0 && 1363 (!tty_check_overlay(tty, atx + ux + width, aty) || 1364 (gcp->attr & GRID_ATTR_CHARSET) || 1365 gcp->flags != last.flags || 1366 gcp->attr != last.attr || 1367 gcp->fg != last.fg || 1368 gcp->bg != last.bg || 1369 gcp->us != last.us || 1370 ux + width + gcp->data.width > nx || 1371 (sizeof buf) - len < gcp->data.size)) { 1372 tty_attributes(tty, &last, defaults, palette); 1373 if (last.flags & GRID_FLAG_CLEARED) { 1374 log_debug("%s: %zu cleared", __func__, len); 1375 tty_clear_line(tty, defaults, aty, atx + ux, 1376 width, last.bg); 1377 } else { 1378 if (!wrapped || atx != 0 || ux != 0) 1379 tty_cursor(tty, atx + ux, aty); 1380 tty_putn(tty, buf, len, width); 1381 } 1382 ux += width; 1383 1384 len = 0; 1385 width = 0; 1386 wrapped = 0; 1387 } 1388 1389 if (gcp->flags & GRID_FLAG_SELECTED) 1390 screen_select_cell(s, &last, gcp); 1391 else 1392 memcpy(&last, gcp, sizeof last); 1393 if (!tty_check_overlay(tty, atx + ux, aty)) { 1394 if (~gcp->flags & GRID_FLAG_PADDING) 1395 ux += gcp->data.width; 1396 } else if (ux + gcp->data.width > nx) { 1397 tty_attributes(tty, &last, defaults, palette); 1398 tty_cursor(tty, atx + ux, aty); 1399 for (j = 0; j < gcp->data.width; j++) { 1400 if (ux + j > nx) 1401 break; 1402 tty_putc(tty, ' '); 1403 ux++; 1404 } 1405 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1406 tty_attributes(tty, &last, defaults, palette); 1407 tty_cursor(tty, atx + ux, aty); 1408 for (j = 0; j < gcp->data.size; j++) 1409 tty_putc(tty, gcp->data.data[j]); 1410 ux += gcp->data.width; 1411 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1412 memcpy(buf + len, gcp->data.data, gcp->data.size); 1413 len += gcp->data.size; 1414 width += gcp->data.width; 1415 } 1416 } 1417 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1418 tty_attributes(tty, &last, defaults, palette); 1419 if (last.flags & GRID_FLAG_CLEARED) { 1420 log_debug("%s: %zu cleared (end)", __func__, len); 1421 tty_clear_line(tty, defaults, aty, atx + ux, width, 1422 last.bg); 1423 } else { 1424 if (!wrapped || atx != 0 || ux != 0) 1425 tty_cursor(tty, atx + ux, aty); 1426 tty_putn(tty, buf, len, width); 1427 } 1428 ux += width; 1429 } 1430 1431 if (!cleared && ux < nx) { 1432 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1433 nx - ux, len); 1434 tty_default_attributes(tty, defaults, palette, 8); 1435 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1436 } 1437 1438 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1439 tty_update_mode(tty, tty->mode, s); 1440 } 1441 1442 void 1443 tty_sync_start(struct tty *tty) 1444 { 1445 if (tty->flags & TTY_BLOCK) 1446 return; 1447 if (tty->flags & TTY_SYNCING) 1448 return; 1449 tty->flags |= TTY_SYNCING; 1450 1451 if (tty_term_has(tty->term, TTYC_SYNC)) { 1452 log_debug("%s sync start", tty->client->name); 1453 tty_putcode1(tty, TTYC_SYNC, 1); 1454 } 1455 } 1456 1457 void 1458 tty_sync_end(struct tty *tty) 1459 { 1460 if (tty->flags & TTY_BLOCK) 1461 return; 1462 if (~tty->flags & TTY_SYNCING) 1463 return; 1464 tty->flags &= ~TTY_SYNCING; 1465 1466 if (tty_term_has(tty->term, TTYC_SYNC)) { 1467 log_debug("%s sync end", tty->client->name); 1468 tty_putcode1(tty, TTYC_SYNC, 2); 1469 } 1470 } 1471 1472 static int 1473 tty_client_ready(struct client *c) 1474 { 1475 if (c->session == NULL || c->tty.term == NULL) 1476 return (0); 1477 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED)) 1478 return (0); 1479 if (c->tty.flags & TTY_FREEZE) 1480 return (0); 1481 return (1); 1482 } 1483 1484 void 1485 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1486 struct tty_ctx *ctx) 1487 { 1488 struct client *c; 1489 int state; 1490 1491 if (ctx->set_client_cb == NULL) 1492 return; 1493 TAILQ_FOREACH(c, &clients, entry) { 1494 if (!tty_client_ready(c)) 1495 continue; 1496 state = ctx->set_client_cb(ctx, c); 1497 if (state == -1) 1498 break; 1499 if (state == 0) 1500 continue; 1501 cmdfn(&c->tty, ctx); 1502 } 1503 } 1504 1505 void 1506 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1507 { 1508 if (ctx->bigger || 1509 !tty_full_width(tty, ctx) || 1510 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1511 (!tty_term_has(tty->term, TTYC_ICH) && 1512 !tty_term_has(tty->term, TTYC_ICH1))) { 1513 tty_draw_pane(tty, ctx, ctx->ocy); 1514 return; 1515 } 1516 1517 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1518 1519 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1520 1521 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1522 } 1523 1524 void 1525 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1526 { 1527 if (ctx->bigger || 1528 !tty_full_width(tty, ctx) || 1529 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1530 (!tty_term_has(tty->term, TTYC_DCH) && 1531 !tty_term_has(tty->term, TTYC_DCH1))) { 1532 tty_draw_pane(tty, ctx, ctx->ocy); 1533 return; 1534 } 1535 1536 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1537 1538 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1539 1540 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1541 } 1542 1543 void 1544 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1545 { 1546 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1547 1548 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1549 } 1550 1551 void 1552 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1553 { 1554 if (ctx->bigger || 1555 !tty_full_width(tty, ctx) || 1556 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1557 !tty_term_has(tty->term, TTYC_CSR) || 1558 !tty_term_has(tty->term, TTYC_IL1) || 1559 ctx->sx == 1 || 1560 ctx->sy == 1) { 1561 tty_redraw_region(tty, ctx); 1562 return; 1563 } 1564 1565 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1566 1567 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1568 tty_margin_off(tty); 1569 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1570 1571 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1572 tty->cx = tty->cy = UINT_MAX; 1573 } 1574 1575 void 1576 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1577 { 1578 if (ctx->bigger || 1579 !tty_full_width(tty, ctx) || 1580 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1581 !tty_term_has(tty->term, TTYC_CSR) || 1582 !tty_term_has(tty->term, TTYC_DL1) || 1583 ctx->sx == 1 || 1584 ctx->sy == 1) { 1585 tty_redraw_region(tty, ctx); 1586 return; 1587 } 1588 1589 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1590 1591 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1592 tty_margin_off(tty); 1593 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1594 1595 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1596 tty->cx = tty->cy = UINT_MAX; 1597 } 1598 1599 void 1600 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1601 { 1602 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1603 1604 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1605 } 1606 1607 void 1608 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1609 { 1610 u_int nx = ctx->sx - ctx->ocx; 1611 1612 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1613 1614 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1615 } 1616 1617 void 1618 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1619 { 1620 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1621 1622 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1623 } 1624 1625 void 1626 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1627 { 1628 if (ctx->ocy != ctx->orupper) 1629 return; 1630 1631 if (ctx->bigger || 1632 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1633 tty_fake_bce(tty, &ctx->defaults, 8) || 1634 !tty_term_has(tty->term, TTYC_CSR) || 1635 (!tty_term_has(tty->term, TTYC_RI) && 1636 !tty_term_has(tty->term, TTYC_RIN)) || 1637 ctx->sx == 1 || 1638 ctx->sy == 1) { 1639 tty_redraw_region(tty, ctx); 1640 return; 1641 } 1642 1643 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1644 1645 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1646 tty_margin_pane(tty, ctx); 1647 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1648 1649 if (tty_term_has(tty->term, TTYC_RI)) 1650 tty_putcode(tty, TTYC_RI); 1651 else 1652 tty_putcode1(tty, TTYC_RIN, 1); 1653 } 1654 1655 void 1656 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1657 { 1658 if (ctx->ocy != ctx->orlower) 1659 return; 1660 1661 if (ctx->bigger || 1662 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1663 tty_fake_bce(tty, &ctx->defaults, 8) || 1664 !tty_term_has(tty->term, TTYC_CSR) || 1665 ctx->sx == 1 || 1666 ctx->sy == 1) { 1667 tty_redraw_region(tty, ctx); 1668 return; 1669 } 1670 1671 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1672 1673 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1674 tty_margin_pane(tty, ctx); 1675 1676 /* 1677 * If we want to wrap a pane while using margins, the cursor needs to 1678 * be exactly on the right of the region. If the cursor is entirely off 1679 * the edge - move it back to the right. Some terminals are funny about 1680 * this and insert extra spaces, so only use the right if margins are 1681 * enabled. 1682 */ 1683 if (ctx->xoff + ctx->ocx > tty->rright) { 1684 if (!tty_use_margin(tty)) 1685 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1686 else 1687 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1688 } else 1689 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1690 1691 tty_putc(tty, '\n'); 1692 } 1693 1694 void 1695 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1696 { 1697 u_int i; 1698 1699 if (ctx->bigger || 1700 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1701 tty_fake_bce(tty, &ctx->defaults, 8) || 1702 !tty_term_has(tty->term, TTYC_CSR) || 1703 ctx->sx == 1 || 1704 ctx->sy == 1) { 1705 tty_redraw_region(tty, ctx); 1706 return; 1707 } 1708 1709 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1710 1711 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1712 tty_margin_pane(tty, ctx); 1713 1714 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1715 if (!tty_use_margin(tty)) 1716 tty_cursor(tty, 0, tty->rlower); 1717 else 1718 tty_cursor(tty, tty->rright, tty->rlower); 1719 for (i = 0; i < ctx->num; i++) 1720 tty_putc(tty, '\n'); 1721 } else { 1722 if (tty->cy == UINT_MAX) 1723 tty_cursor(tty, 0, 0); 1724 else 1725 tty_cursor(tty, 0, tty->cy); 1726 tty_putcode1(tty, TTYC_INDN, ctx->num); 1727 } 1728 } 1729 1730 void 1731 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1732 { 1733 u_int i; 1734 1735 if (ctx->bigger || 1736 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1737 tty_fake_bce(tty, &ctx->defaults, 8) || 1738 !tty_term_has(tty->term, TTYC_CSR) || 1739 (!tty_term_has(tty->term, TTYC_RI) && 1740 !tty_term_has(tty->term, TTYC_RIN)) || 1741 ctx->sx == 1 || 1742 ctx->sy == 1) { 1743 tty_redraw_region(tty, ctx); 1744 return; 1745 } 1746 1747 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1748 1749 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1750 tty_margin_pane(tty, ctx); 1751 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1752 1753 if (tty_term_has(tty->term, TTYC_RIN)) 1754 tty_putcode1(tty, TTYC_RIN, ctx->num); 1755 else { 1756 for (i = 0; i < ctx->num; i++) 1757 tty_putcode(tty, TTYC_RI); 1758 } 1759 } 1760 1761 void 1762 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1763 { 1764 u_int px, py, nx, ny; 1765 1766 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1767 1768 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1769 tty_margin_off(tty); 1770 1771 px = 0; 1772 nx = ctx->sx; 1773 py = ctx->ocy + 1; 1774 ny = ctx->sy - ctx->ocy - 1; 1775 1776 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1777 1778 px = ctx->ocx; 1779 nx = ctx->sx - ctx->ocx; 1780 py = ctx->ocy; 1781 1782 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1783 } 1784 1785 void 1786 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1787 { 1788 u_int px, py, nx, ny; 1789 1790 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1791 1792 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1793 tty_margin_off(tty); 1794 1795 px = 0; 1796 nx = ctx->sx; 1797 py = 0; 1798 ny = ctx->ocy; 1799 1800 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1801 1802 px = 0; 1803 nx = ctx->ocx + 1; 1804 py = ctx->ocy; 1805 1806 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1807 } 1808 1809 void 1810 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1811 { 1812 u_int px, py, nx, ny; 1813 1814 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1815 1816 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1817 tty_margin_off(tty); 1818 1819 px = 0; 1820 nx = ctx->sx; 1821 py = 0; 1822 ny = ctx->sy; 1823 1824 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1825 } 1826 1827 void 1828 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 1829 { 1830 u_int i, j; 1831 1832 if (ctx->bigger) { 1833 ctx->redraw_cb(ctx); 1834 return; 1835 } 1836 1837 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette); 1838 1839 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1840 tty_margin_off(tty); 1841 1842 for (j = 0; j < ctx->sy; j++) { 1843 tty_cursor_pane(tty, ctx, 0, j); 1844 for (i = 0; i < ctx->sx; i++) 1845 tty_putc(tty, 'E'); 1846 } 1847 } 1848 1849 void 1850 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 1851 { 1852 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1)) 1853 return; 1854 1855 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 1856 ctx->ocy == ctx->orlower && 1857 tty_full_width(tty, ctx)) 1858 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1859 1860 tty_margin_off(tty); 1861 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1862 1863 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette); 1864 } 1865 1866 void 1867 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 1868 { 1869 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 1870 return; 1871 1872 if (ctx->bigger && 1873 (ctx->xoff + ctx->ocx < ctx->wox || 1874 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 1875 if (!ctx->wrapped || 1876 !tty_full_width(tty, ctx) || 1877 (tty->term->flags & TERM_NOAM) || 1878 ctx->xoff + ctx->ocx != 0 || 1879 ctx->yoff + ctx->ocy != tty->cy + 1 || 1880 tty->cx < tty->sx || 1881 tty->cy == tty->rlower) 1882 tty_draw_pane(tty, ctx, ctx->ocy); 1883 else 1884 ctx->redraw_cb(ctx); 1885 return; 1886 } 1887 1888 tty_margin_off(tty); 1889 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1890 1891 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette); 1892 tty_putn(tty, ctx->ptr, ctx->num, ctx->num); 1893 } 1894 1895 void 1896 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 1897 { 1898 tty_set_selection(tty, ctx->ptr, ctx->num); 1899 } 1900 1901 void 1902 tty_set_selection(struct tty *tty, const char *buf, size_t len) 1903 { 1904 char *encoded; 1905 size_t size; 1906 1907 if (~tty->flags & TTY_STARTED) 1908 return; 1909 if (!tty_term_has(tty->term, TTYC_MS)) 1910 return; 1911 1912 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 1913 encoded = xmalloc(size); 1914 1915 b64_ntop(buf, len, encoded, size); 1916 tty_putcode_ptr2(tty, TTYC_MS, "", encoded); 1917 1918 free(encoded); 1919 } 1920 1921 void 1922 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 1923 { 1924 tty_add(tty, ctx->ptr, ctx->num); 1925 tty_invalidate(tty); 1926 } 1927 1928 void 1929 tty_cmd_syncstart(struct tty *tty, __unused const struct tty_ctx *ctx) 1930 { 1931 tty_sync_start(tty); 1932 } 1933 1934 void 1935 tty_cell(struct tty *tty, const struct grid_cell *gc, 1936 const struct grid_cell *defaults, int *palette) 1937 { 1938 const struct grid_cell *gcp; 1939 1940 /* Skip last character if terminal is stupid. */ 1941 if ((tty->term->flags & TERM_NOAM) && 1942 tty->cy == tty->sy - 1 && 1943 tty->cx == tty->sx - 1) 1944 return; 1945 1946 /* If this is a padding character, do nothing. */ 1947 if (gc->flags & GRID_FLAG_PADDING) 1948 return; 1949 1950 /* Check the output codeset and apply attributes. */ 1951 gcp = tty_check_codeset(tty, gc); 1952 tty_attributes(tty, gcp, defaults, palette); 1953 1954 /* If it is a single character, write with putc to handle ACS. */ 1955 if (gcp->data.size == 1) { 1956 tty_attributes(tty, gcp, defaults, palette); 1957 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 1958 return; 1959 tty_putc(tty, *gcp->data.data); 1960 return; 1961 } 1962 1963 /* Write the data. */ 1964 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 1965 } 1966 1967 void 1968 tty_reset(struct tty *tty) 1969 { 1970 struct grid_cell *gc = &tty->cell; 1971 1972 if (!grid_cells_equal(gc, &grid_default_cell)) { 1973 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 1974 tty_putcode(tty, TTYC_RMACS); 1975 tty_putcode(tty, TTYC_SGR0); 1976 memcpy(gc, &grid_default_cell, sizeof *gc); 1977 } 1978 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 1979 } 1980 1981 static void 1982 tty_invalidate(struct tty *tty) 1983 { 1984 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 1985 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 1986 1987 tty->cx = tty->cy = UINT_MAX; 1988 tty->rupper = tty->rleft = UINT_MAX; 1989 tty->rlower = tty->rright = UINT_MAX; 1990 1991 if (tty->flags & TTY_STARTED) { 1992 if (tty_use_margin(tty)) 1993 tty_putcode(tty, TTYC_ENMG); 1994 tty_putcode(tty, TTYC_SGR0); 1995 1996 tty->mode = ALL_MODES; 1997 tty_update_mode(tty, MODE_CURSOR, NULL); 1998 1999 tty_cursor(tty, 0, 0); 2000 tty_region_off(tty); 2001 tty_margin_off(tty); 2002 } else 2003 tty->mode = MODE_CURSOR; 2004 } 2005 2006 /* Turn off margin. */ 2007 void 2008 tty_region_off(struct tty *tty) 2009 { 2010 tty_region(tty, 0, tty->sy - 1); 2011 } 2012 2013 /* Set region inside pane. */ 2014 static void 2015 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2016 u_int rlower) 2017 { 2018 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2019 ctx->yoff + rlower - ctx->woy); 2020 } 2021 2022 /* Set region at absolute position. */ 2023 static void 2024 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2025 { 2026 if (tty->rlower == rlower && tty->rupper == rupper) 2027 return; 2028 if (!tty_term_has(tty->term, TTYC_CSR)) 2029 return; 2030 2031 tty->rupper = rupper; 2032 tty->rlower = rlower; 2033 2034 /* 2035 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2036 * 0,0 if it is beyond the last column (they do not reset their wrap 2037 * flag so further output causes a line feed). As a workaround, do an 2038 * explicit move to 0 first. 2039 */ 2040 if (tty->cx >= tty->sx) { 2041 if (tty->cy == UINT_MAX) 2042 tty_cursor(tty, 0, 0); 2043 else 2044 tty_cursor(tty, 0, tty->cy); 2045 } 2046 2047 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2048 tty->cx = tty->cy = UINT_MAX; 2049 } 2050 2051 /* Turn off margin. */ 2052 void 2053 tty_margin_off(struct tty *tty) 2054 { 2055 tty_margin(tty, 0, tty->sx - 1); 2056 } 2057 2058 /* Set margin inside pane. */ 2059 static void 2060 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2061 { 2062 tty_margin(tty, ctx->xoff - ctx->wox, 2063 ctx->xoff + ctx->sx - 1 - ctx->wox); 2064 } 2065 2066 /* Set margin at absolute position. */ 2067 static void 2068 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2069 { 2070 if (!tty_use_margin(tty)) 2071 return; 2072 if (tty->rleft == rleft && tty->rright == rright) 2073 return; 2074 2075 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2076 2077 tty->rleft = rleft; 2078 tty->rright = rright; 2079 2080 if (rleft == 0 && rright == tty->sx - 1) 2081 tty_putcode(tty, TTYC_CLMG); 2082 else 2083 tty_putcode2(tty, TTYC_CMG, rleft, rright); 2084 tty->cx = tty->cy = UINT_MAX; 2085 } 2086 2087 /* 2088 * Move the cursor, unless it would wrap itself when the next character is 2089 * printed. 2090 */ 2091 static void 2092 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2093 u_int cx, u_int cy) 2094 { 2095 if (!ctx->wrapped || 2096 !tty_full_width(tty, ctx) || 2097 (tty->term->flags & TERM_NOAM) || 2098 ctx->xoff + cx != 0 || 2099 ctx->yoff + cy != tty->cy + 1 || 2100 tty->cx < tty->sx || 2101 tty->cy == tty->rlower) 2102 tty_cursor_pane(tty, ctx, cx, cy); 2103 else 2104 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2105 } 2106 2107 /* Move cursor inside pane. */ 2108 static void 2109 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2110 { 2111 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2112 } 2113 2114 /* Move cursor to absolute position. */ 2115 void 2116 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2117 { 2118 struct tty_term *term = tty->term; 2119 u_int thisx, thisy; 2120 int change; 2121 2122 if (tty->flags & TTY_BLOCK) 2123 return; 2124 2125 if (cx > tty->sx - 1) 2126 cx = tty->sx - 1; 2127 2128 thisx = tty->cx; 2129 thisy = tty->cy; 2130 2131 /* No change. */ 2132 if (cx == thisx && cy == thisy) 2133 return; 2134 2135 /* Very end of the line, just use absolute movement. */ 2136 if (thisx > tty->sx - 1) 2137 goto absolute; 2138 2139 /* Move to home position (0, 0). */ 2140 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2141 tty_putcode(tty, TTYC_HOME); 2142 goto out; 2143 } 2144 2145 /* Zero on the next line. */ 2146 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2147 (!tty_use_margin(tty) || tty->rleft == 0)) { 2148 tty_putc(tty, '\r'); 2149 tty_putc(tty, '\n'); 2150 goto out; 2151 } 2152 2153 /* Moving column or row. */ 2154 if (cy == thisy) { 2155 /* 2156 * Moving column only, row staying the same. 2157 */ 2158 2159 /* To left edge. */ 2160 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2161 tty_putc(tty, '\r'); 2162 goto out; 2163 } 2164 2165 /* One to the left. */ 2166 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2167 tty_putcode(tty, TTYC_CUB1); 2168 goto out; 2169 } 2170 2171 /* One to the right. */ 2172 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2173 tty_putcode(tty, TTYC_CUF1); 2174 goto out; 2175 } 2176 2177 /* Calculate difference. */ 2178 change = thisx - cx; /* +ve left, -ve right */ 2179 2180 /* 2181 * Use HPA if change is larger than absolute, otherwise move 2182 * the cursor with CUB/CUF. 2183 */ 2184 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2185 tty_putcode1(tty, TTYC_HPA, cx); 2186 goto out; 2187 } else if (change > 0 && 2188 tty_term_has(term, TTYC_CUB) && 2189 !tty_use_margin(tty)) { 2190 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2191 tty_putcode(tty, TTYC_CUB1); 2192 tty_putcode(tty, TTYC_CUB1); 2193 goto out; 2194 } 2195 tty_putcode1(tty, TTYC_CUB, change); 2196 goto out; 2197 } else if (change < 0 && 2198 tty_term_has(term, TTYC_CUF) && 2199 !tty_use_margin(tty)) { 2200 tty_putcode1(tty, TTYC_CUF, -change); 2201 goto out; 2202 } 2203 } else if (cx == thisx) { 2204 /* 2205 * Moving row only, column staying the same. 2206 */ 2207 2208 /* One above. */ 2209 if (thisy != tty->rupper && 2210 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2211 tty_putcode(tty, TTYC_CUU1); 2212 goto out; 2213 } 2214 2215 /* One below. */ 2216 if (thisy != tty->rlower && 2217 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2218 tty_putcode(tty, TTYC_CUD1); 2219 goto out; 2220 } 2221 2222 /* Calculate difference. */ 2223 change = thisy - cy; /* +ve up, -ve down */ 2224 2225 /* 2226 * Try to use VPA if change is larger than absolute or if this 2227 * change would cross the scroll region, otherwise use CUU/CUD. 2228 */ 2229 if ((u_int) abs(change) > cy || 2230 (change < 0 && cy - change > tty->rlower) || 2231 (change > 0 && cy - change < tty->rupper)) { 2232 if (tty_term_has(term, TTYC_VPA)) { 2233 tty_putcode1(tty, TTYC_VPA, cy); 2234 goto out; 2235 } 2236 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2237 tty_putcode1(tty, TTYC_CUU, change); 2238 goto out; 2239 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2240 tty_putcode1(tty, TTYC_CUD, -change); 2241 goto out; 2242 } 2243 } 2244 2245 absolute: 2246 /* Absolute movement. */ 2247 tty_putcode2(tty, TTYC_CUP, cy, cx); 2248 2249 out: 2250 tty->cx = cx; 2251 tty->cy = cy; 2252 } 2253 2254 void 2255 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2256 const struct grid_cell *defaults, int *palette) 2257 { 2258 struct grid_cell *tc = &tty->cell, gc2; 2259 int changed; 2260 2261 /* Copy cell and update default colours. */ 2262 memcpy(&gc2, gc, sizeof gc2); 2263 if (gc2.fg == 8) 2264 gc2.fg = defaults->fg; 2265 if (gc2.bg == 8) 2266 gc2.bg = defaults->bg; 2267 2268 /* Ignore cell if it is the same as the last one. */ 2269 if (gc2.attr == tty->last_cell.attr && 2270 gc2.fg == tty->last_cell.fg && 2271 gc2.bg == tty->last_cell.bg && 2272 gc2.us == tty->last_cell.us) 2273 return; 2274 2275 /* 2276 * If no setab, try to use the reverse attribute as a best-effort for a 2277 * non-default background. This is a bit of a hack but it doesn't do 2278 * any serious harm and makes a couple of applications happier. 2279 */ 2280 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2281 if (gc2.attr & GRID_ATTR_REVERSE) { 2282 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2283 gc2.attr &= ~GRID_ATTR_REVERSE; 2284 } else { 2285 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2286 gc2.attr |= GRID_ATTR_REVERSE; 2287 } 2288 } 2289 2290 /* Fix up the colours if necessary. */ 2291 tty_check_fg(tty, palette, &gc2); 2292 tty_check_bg(tty, palette, &gc2); 2293 tty_check_us(tty, palette, &gc2); 2294 2295 /* 2296 * If any bits are being cleared or the underline colour is now default, 2297 * reset everything. 2298 */ 2299 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2300 tty_reset(tty); 2301 2302 /* 2303 * Set the colours. This may call tty_reset() (so it comes next) and 2304 * may add to (NOT remove) the desired attributes. 2305 */ 2306 tty_colours(tty, &gc2); 2307 2308 /* Filter out attribute bits already set. */ 2309 changed = gc2.attr & ~tc->attr; 2310 tc->attr = gc2.attr; 2311 2312 /* Set the attributes. */ 2313 if (changed & GRID_ATTR_BRIGHT) 2314 tty_putcode(tty, TTYC_BOLD); 2315 if (changed & GRID_ATTR_DIM) 2316 tty_putcode(tty, TTYC_DIM); 2317 if (changed & GRID_ATTR_ITALICS) 2318 tty_set_italics(tty); 2319 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2320 if ((changed & GRID_ATTR_UNDERSCORE) || 2321 !tty_term_has(tty->term, TTYC_SMULX)) 2322 tty_putcode(tty, TTYC_SMUL); 2323 else if (changed & GRID_ATTR_UNDERSCORE_2) 2324 tty_putcode1(tty, TTYC_SMULX, 2); 2325 else if (changed & GRID_ATTR_UNDERSCORE_3) 2326 tty_putcode1(tty, TTYC_SMULX, 3); 2327 else if (changed & GRID_ATTR_UNDERSCORE_4) 2328 tty_putcode1(tty, TTYC_SMULX, 4); 2329 else if (changed & GRID_ATTR_UNDERSCORE_5) 2330 tty_putcode1(tty, TTYC_SMULX, 5); 2331 } 2332 if (changed & GRID_ATTR_BLINK) 2333 tty_putcode(tty, TTYC_BLINK); 2334 if (changed & GRID_ATTR_REVERSE) { 2335 if (tty_term_has(tty->term, TTYC_REV)) 2336 tty_putcode(tty, TTYC_REV); 2337 else if (tty_term_has(tty->term, TTYC_SMSO)) 2338 tty_putcode(tty, TTYC_SMSO); 2339 } 2340 if (changed & GRID_ATTR_HIDDEN) 2341 tty_putcode(tty, TTYC_INVIS); 2342 if (changed & GRID_ATTR_STRIKETHROUGH) 2343 tty_putcode(tty, TTYC_SMXX); 2344 if (changed & GRID_ATTR_OVERLINE) 2345 tty_putcode(tty, TTYC_SMOL); 2346 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2347 tty_putcode(tty, TTYC_SMACS); 2348 2349 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2350 } 2351 2352 static void 2353 tty_colours(struct tty *tty, const struct grid_cell *gc) 2354 { 2355 struct grid_cell *tc = &tty->cell; 2356 int have_ax; 2357 2358 /* No changes? Nothing is necessary. */ 2359 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2360 return; 2361 2362 /* 2363 * Is either the default colour? This is handled specially because the 2364 * best solution might be to reset both colours to default, in which 2365 * case if only one is default need to fall onward to set the other 2366 * colour. 2367 */ 2368 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2369 /* 2370 * If don't have AX but do have op, send sgr0 (op can't 2371 * actually be used because it is sometimes the same as sgr0 2372 * and sometimes isn't). This resets both colours to default. 2373 * 2374 * Otherwise, try to set the default colour only as needed. 2375 */ 2376 have_ax = tty_term_flag(tty->term, TTYC_AX); 2377 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2378 tty_reset(tty); 2379 else { 2380 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2381 if (have_ax) 2382 tty_puts(tty, "\033[39m"); 2383 else if (tc->fg != 7) 2384 tty_putcode1(tty, TTYC_SETAF, 7); 2385 tc->fg = gc->fg; 2386 } 2387 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2388 if (have_ax) 2389 tty_puts(tty, "\033[49m"); 2390 else if (tc->bg != 0) 2391 tty_putcode1(tty, TTYC_SETAB, 0); 2392 tc->bg = gc->bg; 2393 } 2394 } 2395 } 2396 2397 /* Set the foreground colour. */ 2398 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2399 tty_colours_fg(tty, gc); 2400 2401 /* 2402 * Set the background colour. This must come after the foreground as 2403 * tty_colour_fg() can call tty_reset(). 2404 */ 2405 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2406 tty_colours_bg(tty, gc); 2407 2408 /* Set the underscore color. */ 2409 if (gc->us != tc->us) 2410 tty_colours_us(tty, gc); 2411 } 2412 2413 static void 2414 tty_check_fg(struct tty *tty, int *palette, struct grid_cell *gc) 2415 { 2416 u_char r, g, b; 2417 u_int colours; 2418 int c; 2419 2420 /* 2421 * Perform substitution if this pane has a palette. If the bright 2422 * attribute is set, use the bright entry in the palette by changing to 2423 * the aixterm colour. 2424 */ 2425 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2426 c = gc->fg; 2427 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT) 2428 c += 90; 2429 if ((c = tty_get_palette(palette, c)) != -1) 2430 gc->fg = c; 2431 } 2432 2433 /* Is this a 24-bit colour? */ 2434 if (gc->fg & COLOUR_FLAG_RGB) { 2435 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2436 if (tty->term->flags & TERM_RGBCOLOURS) 2437 return; 2438 colour_split_rgb(gc->fg, &r, &g, &b); 2439 gc->fg = colour_find_rgb(r, g, b); 2440 } 2441 2442 /* How many colours does this terminal have? */ 2443 if (tty->term->flags & TERM_256COLOURS) 2444 colours = 256; 2445 else 2446 colours = tty_term_number(tty->term, TTYC_COLORS); 2447 2448 /* Is this a 256-colour colour? */ 2449 if (gc->fg & COLOUR_FLAG_256) { 2450 /* And not a 256 colour mode? */ 2451 if (colours < 256) { 2452 gc->fg = colour_256to16(gc->fg); 2453 if (gc->fg & 8) { 2454 gc->fg &= 7; 2455 if (colours >= 16) 2456 gc->fg += 90; 2457 } 2458 } 2459 return; 2460 } 2461 2462 /* Is this an aixterm colour? */ 2463 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2464 gc->fg -= 90; 2465 gc->attr |= GRID_ATTR_BRIGHT; 2466 } 2467 } 2468 2469 static void 2470 tty_check_bg(struct tty *tty, int *palette, struct grid_cell *gc) 2471 { 2472 u_char r, g, b; 2473 u_int colours; 2474 int c; 2475 2476 /* Perform substitution if this pane has a palette. */ 2477 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2478 if ((c = tty_get_palette(palette, gc->bg)) != -1) 2479 gc->bg = c; 2480 } 2481 2482 /* Is this a 24-bit colour? */ 2483 if (gc->bg & COLOUR_FLAG_RGB) { 2484 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2485 if (tty->term->flags & TERM_RGBCOLOURS) 2486 return; 2487 colour_split_rgb(gc->bg, &r, &g, &b); 2488 gc->bg = colour_find_rgb(r, g, b); 2489 } 2490 2491 /* How many colours does this terminal have? */ 2492 if (tty->term->flags & TERM_256COLOURS) 2493 colours = 256; 2494 else 2495 colours = tty_term_number(tty->term, TTYC_COLORS); 2496 2497 /* Is this a 256-colour colour? */ 2498 if (gc->bg & COLOUR_FLAG_256) { 2499 /* 2500 * And not a 256 colour mode? Translate to 16-colour 2501 * palette. Bold background doesn't exist portably, so just 2502 * discard the bold bit if set. 2503 */ 2504 if (colours < 256) { 2505 gc->bg = colour_256to16(gc->bg); 2506 if (gc->bg & 8) { 2507 gc->bg &= 7; 2508 if (colours >= 16) 2509 gc->bg += 90; 2510 } 2511 } 2512 return; 2513 } 2514 2515 /* Is this an aixterm colour? */ 2516 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2517 gc->bg -= 90; 2518 } 2519 2520 static void 2521 tty_check_us(__unused struct tty *tty, int *palette, struct grid_cell *gc) 2522 { 2523 int c; 2524 2525 /* Perform substitution if this pane has a palette. */ 2526 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2527 if ((c = tty_get_palette(palette, gc->us)) != -1) 2528 gc->us = c; 2529 } 2530 2531 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2532 if (gc->us & COLOUR_FLAG_256) 2533 gc->us = colour_256toRGB (gc->us); 2534 } 2535 2536 static void 2537 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2538 { 2539 struct grid_cell *tc = &tty->cell; 2540 char s[32]; 2541 2542 /* Is this a 24-bit or 256-colour colour? */ 2543 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2544 if (tty_try_colour(tty, gc->fg, "38") == 0) 2545 goto save; 2546 /* Should not get here, already converted in tty_check_fg. */ 2547 return; 2548 } 2549 2550 /* Is this an aixterm bright colour? */ 2551 if (gc->fg >= 90 && gc->fg <= 97) { 2552 if (tty->term->flags & TERM_256COLOURS) { 2553 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2554 tty_puts(tty, s); 2555 } else 2556 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8); 2557 goto save; 2558 } 2559 2560 /* Otherwise set the foreground colour. */ 2561 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2562 2563 save: 2564 /* Save the new values in the terminal current cell. */ 2565 tc->fg = gc->fg; 2566 } 2567 2568 static void 2569 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2570 { 2571 struct grid_cell *tc = &tty->cell; 2572 char s[32]; 2573 2574 /* Is this a 24-bit or 256-colour colour? */ 2575 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2576 if (tty_try_colour(tty, gc->bg, "48") == 0) 2577 goto save; 2578 /* Should not get here, already converted in tty_check_bg. */ 2579 return; 2580 } 2581 2582 /* Is this an aixterm bright colour? */ 2583 if (gc->bg >= 90 && gc->bg <= 97) { 2584 if (tty->term->flags & TERM_256COLOURS) { 2585 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2586 tty_puts(tty, s); 2587 } else 2588 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8); 2589 goto save; 2590 } 2591 2592 /* Otherwise set the background colour. */ 2593 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2594 2595 save: 2596 /* Save the new values in the terminal current cell. */ 2597 tc->bg = gc->bg; 2598 } 2599 2600 static void 2601 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2602 { 2603 struct grid_cell *tc = &tty->cell; 2604 u_int c; 2605 u_char r, g, b; 2606 2607 /* Clear underline colour. */ 2608 if (gc->us == 0) { 2609 tty_putcode(tty, TTYC_OL); 2610 goto save; 2611 } 2612 2613 /* Must be an RGB colour - this should never happen. */ 2614 if (~gc->us & COLOUR_FLAG_RGB) 2615 return; 2616 2617 /* 2618 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2619 * capability format. Calculate the colour value. 2620 */ 2621 colour_split_rgb(gc->us, &r, &g, &b); 2622 c = (65536 * r) + (256 * g) + b; 2623 2624 /* 2625 * Write the colour. Only use setal if the RGB flag is set because the 2626 * non-RGB version may be wrong. 2627 */ 2628 if (tty_term_has(tty->term, TTYC_SETULC)) 2629 tty_putcode1(tty, TTYC_SETULC, c); 2630 else if (tty_term_has(tty->term, TTYC_SETAL) && 2631 tty_term_has(tty->term, TTYC_RGB)) 2632 tty_putcode1(tty, TTYC_SETAL, c); 2633 2634 save: 2635 /* Save the new values in the terminal current cell. */ 2636 tc->us = gc->us; 2637 } 2638 2639 static int 2640 tty_try_colour(struct tty *tty, int colour, const char *type) 2641 { 2642 u_char r, g, b; 2643 2644 if (colour & COLOUR_FLAG_256) { 2645 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2646 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2647 else if (tty_term_has(tty->term, TTYC_SETAB)) 2648 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2649 return (0); 2650 } 2651 2652 if (colour & COLOUR_FLAG_RGB) { 2653 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2654 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2655 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2656 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2657 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2658 return (0); 2659 } 2660 2661 return (-1); 2662 } 2663 2664 static void 2665 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2666 { 2667 memcpy(gc, &grid_default_cell, sizeof *gc); 2668 gc->fg = wp->fg; 2669 gc->bg = wp->bg; 2670 } 2671 2672 void 2673 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2674 { 2675 struct options *oo = wp->options; 2676 2677 memcpy(gc, &grid_default_cell, sizeof *gc); 2678 2679 if (wp->flags & PANE_STYLECHANGED) { 2680 wp->flags &= ~PANE_STYLECHANGED; 2681 2682 tty_window_default_style(&wp->cached_active_gc, wp); 2683 style_add(&wp->cached_active_gc, oo, "window-active-style", 2684 NULL); 2685 tty_window_default_style(&wp->cached_gc, wp); 2686 style_add(&wp->cached_gc, oo, "window-style", NULL); 2687 } 2688 2689 if (gc->fg == 8) { 2690 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2691 gc->fg = wp->cached_active_gc.fg; 2692 else 2693 gc->fg = wp->cached_gc.fg; 2694 } 2695 2696 if (gc->bg == 8) { 2697 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2698 gc->bg = wp->cached_active_gc.bg; 2699 else 2700 gc->bg = wp->cached_gc.bg; 2701 } 2702 } 2703 2704 static void 2705 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2706 int *palette, u_int bg) 2707 { 2708 struct grid_cell gc; 2709 2710 memcpy(&gc, &grid_default_cell, sizeof gc); 2711 gc.bg = bg; 2712 tty_attributes(tty, &gc, defaults, palette); 2713 } 2714