1 /* $OpenBSD: tty.c,v 1.389 2021/02/17 07:18:36 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 if (changed & MODE_BLINKING) { 674 if (tty_term_has(tty->term, TTYC_CVVIS)) 675 tty_putcode(tty, TTYC_CVVIS); 676 else 677 tty_putcode(tty, TTYC_CNORM); 678 changed |= MODE_CURSOR; 679 } 680 if (changed & MODE_CURSOR) { 681 if (mode & MODE_CURSOR) 682 tty_putcode(tty, TTYC_CNORM); 683 else 684 tty_putcode(tty, TTYC_CIVIS); 685 } 686 if (s != NULL && tty->cstyle != s->cstyle) { 687 if (tty_term_has(tty->term, TTYC_SS)) { 688 if (s->cstyle == 0 && tty_term_has(tty->term, TTYC_SE)) 689 tty_putcode(tty, TTYC_SE); 690 else 691 tty_putcode1(tty, TTYC_SS, s->cstyle); 692 } 693 tty->cstyle = s->cstyle; 694 } 695 if ((changed & ALL_MOUSE_MODES) && 696 tty_term_has(tty->term, TTYC_KMOUS)) { 697 /* 698 * If the mouse modes have changed, clear any that are set and 699 * apply again. There are differences in how terminals track 700 * the various bits. 701 */ 702 if (tty->mode & MODE_MOUSE_SGR) 703 tty_puts(tty, "\033[?1006l"); 704 if (tty->mode & MODE_MOUSE_STANDARD) 705 tty_puts(tty, "\033[?1000l"); 706 if (tty->mode & MODE_MOUSE_BUTTON) 707 tty_puts(tty, "\033[?1002l"); 708 if (tty->mode & MODE_MOUSE_ALL) 709 tty_puts(tty, "\033[?1003l"); 710 if (mode & ALL_MOUSE_MODES) 711 tty_puts(tty, "\033[?1006h"); 712 if (mode & MODE_MOUSE_STANDARD) 713 tty_puts(tty, "\033[?1000h"); 714 if (mode & MODE_MOUSE_BUTTON) 715 tty_puts(tty, "\033[?1002h"); 716 if (mode & MODE_MOUSE_ALL) 717 tty_puts(tty, "\033[?1003h"); 718 } 719 if (changed & MODE_BRACKETPASTE) { 720 if (mode & MODE_BRACKETPASTE) 721 tty_putcode(tty, TTYC_ENBP); 722 else 723 tty_putcode(tty, TTYC_DSBP); 724 } 725 tty->mode = mode; 726 } 727 728 static void 729 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 730 enum tty_code_code code1, u_int n) 731 { 732 if (tty_term_has(tty->term, code)) 733 tty_putcode1(tty, code, n); 734 else { 735 while (n-- > 0) 736 tty_putcode(tty, code1); 737 } 738 } 739 740 static void 741 tty_repeat_space(struct tty *tty, u_int n) 742 { 743 static char s[500]; 744 745 if (*s != ' ') 746 memset(s, ' ', sizeof s); 747 748 while (n > sizeof s) { 749 tty_putn(tty, s, sizeof s, sizeof s); 750 n -= sizeof s; 751 } 752 if (n != 0) 753 tty_putn(tty, s, n, n); 754 } 755 756 /* Is this window bigger than the terminal? */ 757 int 758 tty_window_bigger(struct tty *tty) 759 { 760 struct client *c = tty->client; 761 struct window *w = c->session->curw->window; 762 763 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 764 } 765 766 /* What offset should this window be drawn at? */ 767 int 768 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 769 { 770 *ox = tty->oox; 771 *oy = tty->ooy; 772 *sx = tty->osx; 773 *sy = tty->osy; 774 775 return (tty->oflag); 776 } 777 778 /* What offset should this window be drawn at? */ 779 static int 780 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 781 { 782 struct client *c = tty->client; 783 struct window *w = c->session->curw->window; 784 struct window_pane *wp = server_client_get_pane(c); 785 u_int cx, cy, lines; 786 787 lines = status_line_size(c); 788 789 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 790 *ox = 0; 791 *oy = 0; 792 *sx = w->sx; 793 *sy = w->sy; 794 795 c->pan_window = NULL; 796 return (0); 797 } 798 799 *sx = tty->sx; 800 *sy = tty->sy - lines; 801 802 if (c->pan_window == w) { 803 if (*sx >= w->sx) 804 c->pan_ox = 0; 805 else if (c->pan_ox + *sx > w->sx) 806 c->pan_ox = w->sx - *sx; 807 *ox = c->pan_ox; 808 if (*sy >= w->sy) 809 c->pan_oy = 0; 810 else if (c->pan_oy + *sy > w->sy) 811 c->pan_oy = w->sy - *sy; 812 *oy = c->pan_oy; 813 return (1); 814 } 815 816 if (~wp->screen->mode & MODE_CURSOR) { 817 *ox = 0; 818 *oy = 0; 819 } else { 820 cx = wp->xoff + wp->screen->cx; 821 cy = wp->yoff + wp->screen->cy; 822 823 if (cx < *sx) 824 *ox = 0; 825 else if (cx > w->sx - *sx) 826 *ox = w->sx - *sx; 827 else 828 *ox = cx - *sx / 2; 829 830 if (cy < *sy) 831 *oy = 0; 832 else if (cy > w->sy - *sy) 833 *oy = w->sy - *sy; 834 else 835 *oy = cy - *sy / 2; 836 } 837 838 c->pan_window = NULL; 839 return (1); 840 } 841 842 /* Update stored offsets for a window and redraw if necessary. */ 843 void 844 tty_update_window_offset(struct window *w) 845 { 846 struct client *c; 847 848 TAILQ_FOREACH(c, &clients, entry) { 849 if (c->session != NULL && c->session->curw->window == w) 850 tty_update_client_offset(c); 851 } 852 } 853 854 /* Update stored offsets for a client and redraw if necessary. */ 855 void 856 tty_update_client_offset(struct client *c) 857 { 858 u_int ox, oy, sx, sy; 859 860 if (~c->flags & CLIENT_TERMINAL) 861 return; 862 863 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 864 if (ox == c->tty.oox && 865 oy == c->tty.ooy && 866 sx == c->tty.osx && 867 sy == c->tty.osy) 868 return; 869 870 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 871 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 872 ox, oy, sx, sy); 873 874 c->tty.oox = ox; 875 c->tty.ooy = oy; 876 c->tty.osx = sx; 877 c->tty.osy = sy; 878 879 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 880 } 881 882 /* Get a palette entry. */ 883 static int 884 tty_get_palette(int *palette, int c) 885 { 886 int new; 887 888 if (palette == NULL) 889 return (-1); 890 891 new = -1; 892 if (c < 8) 893 new = palette[c]; 894 else if (c >= 90 && c <= 97) 895 new = palette[8 + c - 90]; 896 else if (c & COLOUR_FLAG_256) 897 new = palette[c & ~COLOUR_FLAG_256]; 898 if (new == 0) 899 return (-1); 900 return (new); 901 } 902 903 /* 904 * Is the region large enough to be worth redrawing once later rather than 905 * probably several times now? Currently yes if it is more than 50% of the 906 * pane. 907 */ 908 static int 909 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 910 { 911 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 912 } 913 914 /* 915 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 916 * emulated. 917 */ 918 static int 919 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 920 { 921 if (tty_term_flag(tty->term, TTYC_BCE)) 922 return (0); 923 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 924 return (1); 925 return (0); 926 } 927 928 /* 929 * Redraw scroll region using data from screen (already updated). Used when 930 * CSR not supported, or window is a pane that doesn't take up the full 931 * width of the terminal. 932 */ 933 static void 934 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 935 { 936 struct client *c = tty->client; 937 u_int i; 938 939 /* 940 * If region is large, schedule a redraw. In most cases this is likely 941 * to be followed by some more scrolling. 942 */ 943 if (tty_large_region(tty, ctx)) { 944 log_debug("%s: %s large redraw", __func__, c->name); 945 ctx->redraw_cb(ctx); 946 return; 947 } 948 949 if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) { 950 for (i = ctx->ocy; i < ctx->sy; i++) 951 tty_draw_pane(tty, ctx, i); 952 } else { 953 for (i = ctx->orupper; i <= ctx->orlower; i++) 954 tty_draw_pane(tty, ctx, i); 955 } 956 } 957 958 /* Is this position visible in the pane? */ 959 static int 960 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 961 u_int py, u_int nx, u_int ny) 962 { 963 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 964 965 if (!ctx->bigger) 966 return (1); 967 968 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 969 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 970 return (0); 971 return (1); 972 } 973 974 /* Clamp line position to visible part of pane. */ 975 static int 976 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 977 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 978 { 979 u_int xoff = ctx->rxoff + px; 980 981 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 982 return (0); 983 *ry = ctx->yoff + py - ctx->woy; 984 985 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 986 /* All visible. */ 987 *i = 0; 988 *x = ctx->xoff + px - ctx->wox; 989 *rx = nx; 990 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 991 /* Both left and right not visible. */ 992 *i = ctx->wox; 993 *x = 0; 994 *rx = ctx->wsx; 995 } else if (xoff < ctx->wox) { 996 /* Left not visible. */ 997 *i = ctx->wox - (ctx->xoff + px); 998 *x = 0; 999 *rx = nx - *i; 1000 } else { 1001 /* Right not visible. */ 1002 *i = 0; 1003 *x = (ctx->xoff + px) - ctx->wox; 1004 *rx = ctx->wsx - *x; 1005 } 1006 if (*rx > nx) 1007 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1008 1009 return (1); 1010 } 1011 1012 /* Clear a line. */ 1013 static void 1014 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1015 u_int px, u_int nx, u_int bg) 1016 { 1017 struct client *c = tty->client; 1018 1019 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1020 1021 /* Nothing to clear. */ 1022 if (nx == 0) 1023 return; 1024 1025 /* If genuine BCE is available, can try escape sequences. */ 1026 if (!tty_fake_bce(tty, defaults, bg)) { 1027 /* Off the end of the line, use EL if available. */ 1028 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1029 tty_cursor(tty, px, py); 1030 tty_putcode(tty, TTYC_EL); 1031 return; 1032 } 1033 1034 /* At the start of the line. Use EL1. */ 1035 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1036 tty_cursor(tty, px + nx - 1, py); 1037 tty_putcode(tty, TTYC_EL1); 1038 return; 1039 } 1040 1041 /* Section of line. Use ECH if possible. */ 1042 if (tty_term_has(tty->term, TTYC_ECH)) { 1043 tty_cursor(tty, px, py); 1044 tty_putcode1(tty, TTYC_ECH, nx); 1045 return; 1046 } 1047 } 1048 1049 /* Couldn't use an escape sequence, use spaces. */ 1050 tty_cursor(tty, px, py); 1051 tty_repeat_space(tty, nx); 1052 } 1053 1054 /* Clear a line, adjusting to visible part of pane. */ 1055 static void 1056 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1057 u_int px, u_int nx, u_int bg) 1058 { 1059 struct client *c = tty->client; 1060 u_int i, x, rx, ry; 1061 1062 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1063 1064 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1065 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1066 } 1067 1068 /* Clamp area position to visible part of pane. */ 1069 static int 1070 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1071 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1072 u_int *ry) 1073 { 1074 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1075 1076 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1077 return (0); 1078 1079 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1080 /* All visible. */ 1081 *i = 0; 1082 *x = ctx->xoff + px - ctx->wox; 1083 *rx = nx; 1084 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1085 /* Both left and right not visible. */ 1086 *i = ctx->wox; 1087 *x = 0; 1088 *rx = ctx->wsx; 1089 } else if (xoff < ctx->wox) { 1090 /* Left not visible. */ 1091 *i = ctx->wox - (ctx->xoff + px); 1092 *x = 0; 1093 *rx = nx - *i; 1094 } else { 1095 /* Right not visible. */ 1096 *i = 0; 1097 *x = (ctx->xoff + px) - ctx->wox; 1098 *rx = ctx->wsx - *x; 1099 } 1100 if (*rx > nx) 1101 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1102 1103 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1104 /* All visible. */ 1105 *j = 0; 1106 *y = ctx->yoff + py - ctx->woy; 1107 *ry = ny; 1108 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1109 /* Both top and bottom not visible. */ 1110 *j = ctx->woy; 1111 *y = 0; 1112 *ry = ctx->wsy; 1113 } else if (yoff < ctx->woy) { 1114 /* Top not visible. */ 1115 *j = ctx->woy - (ctx->yoff + py); 1116 *y = 0; 1117 *ry = ny - *j; 1118 } else { 1119 /* Bottom not visible. */ 1120 *j = 0; 1121 *y = (ctx->yoff + py) - ctx->woy; 1122 *ry = ctx->wsy - *y; 1123 } 1124 if (*ry > ny) 1125 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1126 1127 return (1); 1128 } 1129 1130 /* Clear an area, adjusting to visible part of pane. */ 1131 static void 1132 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1133 u_int ny, u_int px, u_int nx, u_int bg) 1134 { 1135 struct client *c = tty->client; 1136 u_int yy; 1137 char tmp[64]; 1138 1139 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1140 1141 /* Nothing to clear. */ 1142 if (nx == 0 || ny == 0) 1143 return; 1144 1145 /* If genuine BCE is available, can try escape sequences. */ 1146 if (!tty_fake_bce(tty, defaults, bg)) { 1147 /* Use ED if clearing off the bottom of the terminal. */ 1148 if (px == 0 && 1149 px + nx >= tty->sx && 1150 py + ny >= tty->sy && 1151 tty_term_has(tty->term, TTYC_ED)) { 1152 tty_cursor(tty, 0, py); 1153 tty_putcode(tty, TTYC_ED); 1154 return; 1155 } 1156 1157 /* 1158 * On VT420 compatible terminals we can use DECFRA if the 1159 * background colour isn't default (because it doesn't work 1160 * after SGR 0). 1161 */ 1162 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1163 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1164 py + 1, px + 1, py + ny, px + nx); 1165 tty_puts(tty, tmp); 1166 return; 1167 } 1168 1169 /* Full lines can be scrolled away to clear them. */ 1170 if (px == 0 && 1171 px + nx >= tty->sx && 1172 ny > 2 && 1173 tty_term_has(tty->term, TTYC_CSR) && 1174 tty_term_has(tty->term, TTYC_INDN)) { 1175 tty_region(tty, py, py + ny - 1); 1176 tty_margin_off(tty); 1177 tty_putcode1(tty, TTYC_INDN, ny); 1178 return; 1179 } 1180 1181 /* 1182 * If margins are supported, can just scroll the area off to 1183 * clear it. 1184 */ 1185 if (nx > 2 && 1186 ny > 2 && 1187 tty_term_has(tty->term, TTYC_CSR) && 1188 tty_use_margin(tty) && 1189 tty_term_has(tty->term, TTYC_INDN)) { 1190 tty_region(tty, py, py + ny - 1); 1191 tty_margin(tty, px, px + nx - 1); 1192 tty_putcode1(tty, TTYC_INDN, ny); 1193 return; 1194 } 1195 } 1196 1197 /* Couldn't use an escape sequence, loop over the lines. */ 1198 for (yy = py; yy < py + ny; yy++) 1199 tty_clear_line(tty, defaults, yy, px, nx, bg); 1200 } 1201 1202 /* Clear an area in a pane. */ 1203 static void 1204 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1205 u_int ny, u_int px, u_int nx, u_int bg) 1206 { 1207 u_int i, j, x, y, rx, ry; 1208 1209 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1210 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1211 } 1212 1213 static void 1214 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1215 { 1216 struct screen *s = ctx->s; 1217 u_int nx = ctx->sx, i, x, rx, ry; 1218 1219 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1220 1221 if (!ctx->bigger) { 1222 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1223 &ctx->defaults, ctx->palette); 1224 return; 1225 } 1226 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1227 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1228 ctx->palette); 1229 } 1230 } 1231 1232 static const struct grid_cell * 1233 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1234 { 1235 static struct grid_cell new; 1236 int c; 1237 1238 /* Characters less than 0x7f are always fine, no matter what. */ 1239 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1240 return (gc); 1241 1242 /* UTF-8 terminal and a UTF-8 character - fine. */ 1243 if (tty->client->flags & CLIENT_UTF8) 1244 return (gc); 1245 memcpy(&new, gc, sizeof new); 1246 1247 /* See if this can be mapped to an ACS character. */ 1248 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1249 if (c != -1) { 1250 utf8_set(&new.data, c); 1251 new.attr |= GRID_ATTR_CHARSET; 1252 return (&new); 1253 } 1254 1255 /* Replace by the right number of underscores. */ 1256 new.data.size = gc->data.width; 1257 if (new.data.size > UTF8_SIZE) 1258 new.data.size = UTF8_SIZE; 1259 memset(new.data.data, '_', new.data.size); 1260 return (&new); 1261 } 1262 1263 static int 1264 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1265 { 1266 struct client *c = tty->client; 1267 1268 if (c->overlay_check == NULL) 1269 return (1); 1270 return (c->overlay_check(c, px, py)); 1271 } 1272 1273 void 1274 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1275 u_int atx, u_int aty, const struct grid_cell *defaults, int *palette) 1276 { 1277 struct grid *gd = s->grid; 1278 struct grid_cell gc, last; 1279 const struct grid_cell *gcp; 1280 struct grid_line *gl; 1281 u_int i, j, ux, sx, width; 1282 int flags, cleared = 0, wrapped = 0; 1283 char buf[512]; 1284 size_t len; 1285 u_int cellsize; 1286 1287 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1288 px, py, nx, atx, aty); 1289 1290 /* 1291 * py is the line in the screen to draw. 1292 * px is the start x and nx is the width to draw. 1293 * atx,aty is the line on the terminal to draw it. 1294 */ 1295 1296 flags = (tty->flags & TTY_NOCURSOR); 1297 tty->flags |= TTY_NOCURSOR; 1298 tty_update_mode(tty, tty->mode, s); 1299 1300 tty_region_off(tty); 1301 tty_margin_off(tty); 1302 1303 /* 1304 * Clamp the width to cellsize - note this is not cellused, because 1305 * there may be empty background cells after it (from BCE). 1306 */ 1307 sx = screen_size_x(s); 1308 if (nx > sx) 1309 nx = sx; 1310 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1311 if (sx > cellsize) 1312 sx = cellsize; 1313 if (sx > tty->sx) 1314 sx = tty->sx; 1315 if (sx > nx) 1316 sx = nx; 1317 ux = 0; 1318 1319 if (py == 0) 1320 gl = NULL; 1321 else 1322 gl = grid_get_line(gd, gd->hsize + py - 1); 1323 if (gl == NULL || 1324 (~gl->flags & GRID_LINE_WRAPPED) || 1325 atx != 0 || 1326 tty->cx < tty->sx || 1327 nx < tty->sx) { 1328 if (nx < tty->sx && 1329 atx == 0 && 1330 px + sx != nx && 1331 tty_term_has(tty->term, TTYC_EL1) && 1332 !tty_fake_bce(tty, defaults, 8)) { 1333 tty_default_attributes(tty, defaults, palette, 8); 1334 tty_cursor(tty, nx - 1, aty); 1335 tty_putcode(tty, TTYC_EL1); 1336 cleared = 1; 1337 } 1338 } else { 1339 log_debug("%s: wrapped line %u", __func__, aty); 1340 wrapped = 1; 1341 } 1342 1343 memcpy(&last, &grid_default_cell, sizeof last); 1344 len = 0; 1345 width = 0; 1346 1347 for (i = 0; i < sx; i++) { 1348 grid_view_get_cell(gd, px + i, py, &gc); 1349 gcp = tty_check_codeset(tty, &gc); 1350 if (len != 0 && 1351 (!tty_check_overlay(tty, atx + ux + width, aty) || 1352 (gcp->attr & GRID_ATTR_CHARSET) || 1353 gcp->flags != last.flags || 1354 gcp->attr != last.attr || 1355 gcp->fg != last.fg || 1356 gcp->bg != last.bg || 1357 gcp->us != last.us || 1358 ux + width + gcp->data.width > nx || 1359 (sizeof buf) - len < gcp->data.size)) { 1360 tty_attributes(tty, &last, defaults, palette); 1361 if (last.flags & GRID_FLAG_CLEARED) { 1362 log_debug("%s: %zu cleared", __func__, len); 1363 tty_clear_line(tty, defaults, aty, atx + ux, 1364 width, last.bg); 1365 } else { 1366 if (!wrapped || atx != 0 || ux != 0) 1367 tty_cursor(tty, atx + ux, aty); 1368 tty_putn(tty, buf, len, width); 1369 } 1370 ux += width; 1371 1372 len = 0; 1373 width = 0; 1374 wrapped = 0; 1375 } 1376 1377 if (gcp->flags & GRID_FLAG_SELECTED) 1378 screen_select_cell(s, &last, gcp); 1379 else 1380 memcpy(&last, gcp, sizeof last); 1381 if (!tty_check_overlay(tty, atx + ux, aty)) { 1382 if (~gcp->flags & GRID_FLAG_PADDING) 1383 ux += gcp->data.width; 1384 } else if (ux + gcp->data.width > nx) { 1385 tty_attributes(tty, &last, defaults, palette); 1386 tty_cursor(tty, atx + ux, aty); 1387 for (j = 0; j < gcp->data.width; j++) { 1388 if (ux + j > nx) 1389 break; 1390 tty_putc(tty, ' '); 1391 ux++; 1392 } 1393 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1394 tty_attributes(tty, &last, defaults, palette); 1395 tty_cursor(tty, atx + ux, aty); 1396 for (j = 0; j < gcp->data.size; j++) 1397 tty_putc(tty, gcp->data.data[j]); 1398 ux += gcp->data.width; 1399 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1400 memcpy(buf + len, gcp->data.data, gcp->data.size); 1401 len += gcp->data.size; 1402 width += gcp->data.width; 1403 } 1404 } 1405 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1406 tty_attributes(tty, &last, defaults, palette); 1407 if (last.flags & GRID_FLAG_CLEARED) { 1408 log_debug("%s: %zu cleared (end)", __func__, len); 1409 tty_clear_line(tty, defaults, aty, atx + ux, width, 1410 last.bg); 1411 } else { 1412 if (!wrapped || atx != 0 || ux != 0) 1413 tty_cursor(tty, atx + ux, aty); 1414 tty_putn(tty, buf, len, width); 1415 } 1416 ux += width; 1417 } 1418 1419 if (!cleared && ux < nx) { 1420 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1421 nx - ux, len); 1422 tty_default_attributes(tty, defaults, palette, 8); 1423 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1424 } 1425 1426 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1427 tty_update_mode(tty, tty->mode, s); 1428 } 1429 1430 void 1431 tty_sync_start(struct tty *tty) 1432 { 1433 if (tty->flags & TTY_BLOCK) 1434 return; 1435 if (tty->flags & TTY_SYNCING) 1436 return; 1437 tty->flags |= TTY_SYNCING; 1438 1439 if (tty_term_has(tty->term, TTYC_SYNC)) { 1440 log_debug("%s sync start", tty->client->name); 1441 tty_putcode1(tty, TTYC_SYNC, 1); 1442 } 1443 } 1444 1445 void 1446 tty_sync_end(struct tty *tty) 1447 { 1448 if (tty->flags & TTY_BLOCK) 1449 return; 1450 if (~tty->flags & TTY_SYNCING) 1451 return; 1452 tty->flags &= ~TTY_SYNCING; 1453 1454 if (tty_term_has(tty->term, TTYC_SYNC)) { 1455 log_debug("%s sync end", tty->client->name); 1456 tty_putcode1(tty, TTYC_SYNC, 2); 1457 } 1458 } 1459 1460 static int 1461 tty_client_ready(struct client *c) 1462 { 1463 if (c->session == NULL || c->tty.term == NULL) 1464 return (0); 1465 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED)) 1466 return (0); 1467 if (c->tty.flags & TTY_FREEZE) 1468 return (0); 1469 return (1); 1470 } 1471 1472 void 1473 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1474 struct tty_ctx *ctx) 1475 { 1476 struct client *c; 1477 int state; 1478 1479 if (ctx->set_client_cb == NULL) 1480 return; 1481 TAILQ_FOREACH(c, &clients, entry) { 1482 if (!tty_client_ready(c)) 1483 continue; 1484 state = ctx->set_client_cb(ctx, c); 1485 if (state == -1) 1486 break; 1487 if (state == 0) 1488 continue; 1489 cmdfn(&c->tty, ctx); 1490 } 1491 } 1492 1493 void 1494 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1495 { 1496 if (ctx->bigger || 1497 !tty_full_width(tty, ctx) || 1498 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1499 (!tty_term_has(tty->term, TTYC_ICH) && 1500 !tty_term_has(tty->term, TTYC_ICH1))) { 1501 tty_draw_pane(tty, ctx, ctx->ocy); 1502 return; 1503 } 1504 1505 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1506 1507 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1508 1509 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1510 } 1511 1512 void 1513 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1514 { 1515 if (ctx->bigger || 1516 !tty_full_width(tty, ctx) || 1517 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1518 (!tty_term_has(tty->term, TTYC_DCH) && 1519 !tty_term_has(tty->term, TTYC_DCH1))) { 1520 tty_draw_pane(tty, ctx, ctx->ocy); 1521 return; 1522 } 1523 1524 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1525 1526 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1527 1528 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1529 } 1530 1531 void 1532 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1533 { 1534 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1535 1536 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1537 } 1538 1539 void 1540 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1541 { 1542 if (ctx->bigger || 1543 !tty_full_width(tty, ctx) || 1544 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1545 !tty_term_has(tty->term, TTYC_CSR) || 1546 !tty_term_has(tty->term, TTYC_IL1) || 1547 ctx->sx == 1 || 1548 ctx->sy == 1) { 1549 tty_redraw_region(tty, ctx); 1550 return; 1551 } 1552 1553 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1554 1555 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1556 tty_margin_off(tty); 1557 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1558 1559 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1560 tty->cx = tty->cy = UINT_MAX; 1561 } 1562 1563 void 1564 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1565 { 1566 if (ctx->bigger || 1567 !tty_full_width(tty, ctx) || 1568 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1569 !tty_term_has(tty->term, TTYC_CSR) || 1570 !tty_term_has(tty->term, TTYC_DL1) || 1571 ctx->sx == 1 || 1572 ctx->sy == 1) { 1573 tty_redraw_region(tty, ctx); 1574 return; 1575 } 1576 1577 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1578 1579 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1580 tty_margin_off(tty); 1581 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1582 1583 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1584 tty->cx = tty->cy = UINT_MAX; 1585 } 1586 1587 void 1588 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1589 { 1590 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1591 1592 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1593 } 1594 1595 void 1596 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1597 { 1598 u_int nx = ctx->sx - ctx->ocx; 1599 1600 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1601 1602 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1603 } 1604 1605 void 1606 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1607 { 1608 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1609 1610 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1611 } 1612 1613 void 1614 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1615 { 1616 if (ctx->ocy != ctx->orupper) 1617 return; 1618 1619 if (ctx->bigger || 1620 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1621 tty_fake_bce(tty, &ctx->defaults, 8) || 1622 !tty_term_has(tty->term, TTYC_CSR) || 1623 (!tty_term_has(tty->term, TTYC_RI) && 1624 !tty_term_has(tty->term, TTYC_RIN)) || 1625 ctx->sx == 1 || 1626 ctx->sy == 1) { 1627 tty_redraw_region(tty, ctx); 1628 return; 1629 } 1630 1631 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1632 1633 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1634 tty_margin_pane(tty, ctx); 1635 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1636 1637 if (tty_term_has(tty->term, TTYC_RI)) 1638 tty_putcode(tty, TTYC_RI); 1639 else 1640 tty_putcode1(tty, TTYC_RIN, 1); 1641 } 1642 1643 void 1644 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1645 { 1646 if (ctx->ocy != ctx->orlower) 1647 return; 1648 1649 if (ctx->bigger || 1650 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1651 tty_fake_bce(tty, &ctx->defaults, 8) || 1652 !tty_term_has(tty->term, TTYC_CSR) || 1653 ctx->sx == 1 || 1654 ctx->sy == 1) { 1655 tty_redraw_region(tty, ctx); 1656 return; 1657 } 1658 1659 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1660 1661 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1662 tty_margin_pane(tty, ctx); 1663 1664 /* 1665 * If we want to wrap a pane while using margins, the cursor needs to 1666 * be exactly on the right of the region. If the cursor is entirely off 1667 * the edge - move it back to the right. Some terminals are funny about 1668 * this and insert extra spaces, so only use the right if margins are 1669 * enabled. 1670 */ 1671 if (ctx->xoff + ctx->ocx > tty->rright) { 1672 if (!tty_use_margin(tty)) 1673 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1674 else 1675 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1676 } else 1677 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1678 1679 tty_putc(tty, '\n'); 1680 } 1681 1682 void 1683 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1684 { 1685 u_int i; 1686 1687 if (ctx->bigger || 1688 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1689 tty_fake_bce(tty, &ctx->defaults, 8) || 1690 !tty_term_has(tty->term, TTYC_CSR) || 1691 ctx->sx == 1 || 1692 ctx->sy == 1) { 1693 tty_redraw_region(tty, ctx); 1694 return; 1695 } 1696 1697 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1698 1699 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1700 tty_margin_pane(tty, ctx); 1701 1702 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1703 if (!tty_use_margin(tty)) 1704 tty_cursor(tty, 0, tty->rlower); 1705 else 1706 tty_cursor(tty, tty->rright, tty->rlower); 1707 for (i = 0; i < ctx->num; i++) 1708 tty_putc(tty, '\n'); 1709 } else { 1710 if (tty->cy == UINT_MAX) 1711 tty_cursor(tty, 0, 0); 1712 else 1713 tty_cursor(tty, 0, tty->cy); 1714 tty_putcode1(tty, TTYC_INDN, ctx->num); 1715 } 1716 } 1717 1718 void 1719 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1720 { 1721 u_int i; 1722 1723 if (ctx->bigger || 1724 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1725 tty_fake_bce(tty, &ctx->defaults, 8) || 1726 !tty_term_has(tty->term, TTYC_CSR) || 1727 (!tty_term_has(tty->term, TTYC_RI) && 1728 !tty_term_has(tty->term, TTYC_RIN)) || 1729 ctx->sx == 1 || 1730 ctx->sy == 1) { 1731 tty_redraw_region(tty, ctx); 1732 return; 1733 } 1734 1735 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1736 1737 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1738 tty_margin_pane(tty, ctx); 1739 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1740 1741 if (tty_term_has(tty->term, TTYC_RIN)) 1742 tty_putcode1(tty, TTYC_RIN, ctx->num); 1743 else { 1744 for (i = 0; i < ctx->num; i++) 1745 tty_putcode(tty, TTYC_RI); 1746 } 1747 } 1748 1749 void 1750 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1751 { 1752 u_int px, py, nx, ny; 1753 1754 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1755 1756 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1757 tty_margin_off(tty); 1758 1759 px = 0; 1760 nx = ctx->sx; 1761 py = ctx->ocy + 1; 1762 ny = ctx->sy - ctx->ocy - 1; 1763 1764 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1765 1766 px = ctx->ocx; 1767 nx = ctx->sx - ctx->ocx; 1768 py = ctx->ocy; 1769 1770 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1771 } 1772 1773 void 1774 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1775 { 1776 u_int px, py, nx, ny; 1777 1778 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1779 1780 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1781 tty_margin_off(tty); 1782 1783 px = 0; 1784 nx = ctx->sx; 1785 py = 0; 1786 ny = ctx->ocy; 1787 1788 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1789 1790 px = 0; 1791 nx = ctx->ocx + 1; 1792 py = ctx->ocy; 1793 1794 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1795 } 1796 1797 void 1798 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1799 { 1800 u_int px, py, nx, ny; 1801 1802 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1803 1804 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1805 tty_margin_off(tty); 1806 1807 px = 0; 1808 nx = ctx->sx; 1809 py = 0; 1810 ny = ctx->sy; 1811 1812 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1813 } 1814 1815 void 1816 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 1817 { 1818 u_int i, j; 1819 1820 if (ctx->bigger) { 1821 ctx->redraw_cb(ctx); 1822 return; 1823 } 1824 1825 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette); 1826 1827 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1828 tty_margin_off(tty); 1829 1830 for (j = 0; j < ctx->sy; j++) { 1831 tty_cursor_pane(tty, ctx, 0, j); 1832 for (i = 0; i < ctx->sx; i++) 1833 tty_putc(tty, 'E'); 1834 } 1835 } 1836 1837 void 1838 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 1839 { 1840 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1)) 1841 return; 1842 1843 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 1844 ctx->ocy == ctx->orlower && 1845 tty_full_width(tty, ctx)) 1846 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1847 1848 tty_margin_off(tty); 1849 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1850 1851 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette); 1852 } 1853 1854 void 1855 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 1856 { 1857 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 1858 return; 1859 1860 if (ctx->bigger && 1861 (ctx->xoff + ctx->ocx < ctx->wox || 1862 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 1863 if (!ctx->wrapped || 1864 !tty_full_width(tty, ctx) || 1865 (tty->term->flags & TERM_NOAM) || 1866 ctx->xoff + ctx->ocx != 0 || 1867 ctx->yoff + ctx->ocy != tty->cy + 1 || 1868 tty->cx < tty->sx || 1869 tty->cy == tty->rlower) 1870 tty_draw_pane(tty, ctx, ctx->ocy); 1871 else 1872 ctx->redraw_cb(ctx); 1873 return; 1874 } 1875 1876 tty_margin_off(tty); 1877 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1878 1879 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette); 1880 tty_putn(tty, ctx->ptr, ctx->num, ctx->num); 1881 } 1882 1883 void 1884 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 1885 { 1886 tty_set_selection(tty, ctx->ptr, ctx->num); 1887 } 1888 1889 void 1890 tty_set_selection(struct tty *tty, const char *buf, size_t len) 1891 { 1892 char *encoded; 1893 size_t size; 1894 1895 if (~tty->flags & TTY_STARTED) 1896 return; 1897 if (!tty_term_has(tty->term, TTYC_MS)) 1898 return; 1899 1900 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 1901 encoded = xmalloc(size); 1902 1903 b64_ntop(buf, len, encoded, size); 1904 tty_putcode_ptr2(tty, TTYC_MS, "", encoded); 1905 1906 free(encoded); 1907 } 1908 1909 void 1910 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 1911 { 1912 tty_add(tty, ctx->ptr, ctx->num); 1913 tty_invalidate(tty); 1914 } 1915 1916 void 1917 tty_cmd_syncstart(struct tty *tty, __unused const struct tty_ctx *ctx) 1918 { 1919 tty_sync_start(tty); 1920 } 1921 1922 void 1923 tty_cell(struct tty *tty, const struct grid_cell *gc, 1924 const struct grid_cell *defaults, int *palette) 1925 { 1926 const struct grid_cell *gcp; 1927 1928 /* Skip last character if terminal is stupid. */ 1929 if ((tty->term->flags & TERM_NOAM) && 1930 tty->cy == tty->sy - 1 && 1931 tty->cx == tty->sx - 1) 1932 return; 1933 1934 /* If this is a padding character, do nothing. */ 1935 if (gc->flags & GRID_FLAG_PADDING) 1936 return; 1937 1938 /* Check the output codeset and apply attributes. */ 1939 gcp = tty_check_codeset(tty, gc); 1940 tty_attributes(tty, gcp, defaults, palette); 1941 1942 /* If it is a single character, write with putc to handle ACS. */ 1943 if (gcp->data.size == 1) { 1944 tty_attributes(tty, gcp, defaults, palette); 1945 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 1946 return; 1947 tty_putc(tty, *gcp->data.data); 1948 return; 1949 } 1950 1951 /* Write the data. */ 1952 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 1953 } 1954 1955 void 1956 tty_reset(struct tty *tty) 1957 { 1958 struct grid_cell *gc = &tty->cell; 1959 1960 if (!grid_cells_equal(gc, &grid_default_cell)) { 1961 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 1962 tty_putcode(tty, TTYC_RMACS); 1963 tty_putcode(tty, TTYC_SGR0); 1964 memcpy(gc, &grid_default_cell, sizeof *gc); 1965 } 1966 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 1967 } 1968 1969 static void 1970 tty_invalidate(struct tty *tty) 1971 { 1972 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 1973 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 1974 1975 tty->cx = tty->cy = UINT_MAX; 1976 tty->rupper = tty->rleft = UINT_MAX; 1977 tty->rlower = tty->rright = UINT_MAX; 1978 1979 if (tty->flags & TTY_STARTED) { 1980 if (tty_use_margin(tty)) 1981 tty_putcode(tty, TTYC_ENMG); 1982 tty_putcode(tty, TTYC_SGR0); 1983 1984 tty->mode = ALL_MODES; 1985 tty_update_mode(tty, MODE_CURSOR, NULL); 1986 1987 tty_cursor(tty, 0, 0); 1988 tty_region_off(tty); 1989 tty_margin_off(tty); 1990 } else 1991 tty->mode = MODE_CURSOR; 1992 } 1993 1994 /* Turn off margin. */ 1995 void 1996 tty_region_off(struct tty *tty) 1997 { 1998 tty_region(tty, 0, tty->sy - 1); 1999 } 2000 2001 /* Set region inside pane. */ 2002 static void 2003 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2004 u_int rlower) 2005 { 2006 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2007 ctx->yoff + rlower - ctx->woy); 2008 } 2009 2010 /* Set region at absolute position. */ 2011 static void 2012 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2013 { 2014 if (tty->rlower == rlower && tty->rupper == rupper) 2015 return; 2016 if (!tty_term_has(tty->term, TTYC_CSR)) 2017 return; 2018 2019 tty->rupper = rupper; 2020 tty->rlower = rlower; 2021 2022 /* 2023 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2024 * 0,0 if it is beyond the last column (they do not reset their wrap 2025 * flag so further output causes a line feed). As a workaround, do an 2026 * explicit move to 0 first. 2027 */ 2028 if (tty->cx >= tty->sx) { 2029 if (tty->cy == UINT_MAX) 2030 tty_cursor(tty, 0, 0); 2031 else 2032 tty_cursor(tty, 0, tty->cy); 2033 } 2034 2035 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2036 tty->cx = tty->cy = UINT_MAX; 2037 } 2038 2039 /* Turn off margin. */ 2040 void 2041 tty_margin_off(struct tty *tty) 2042 { 2043 tty_margin(tty, 0, tty->sx - 1); 2044 } 2045 2046 /* Set margin inside pane. */ 2047 static void 2048 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2049 { 2050 tty_margin(tty, ctx->xoff - ctx->wox, 2051 ctx->xoff + ctx->sx - 1 - ctx->wox); 2052 } 2053 2054 /* Set margin at absolute position. */ 2055 static void 2056 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2057 { 2058 if (!tty_use_margin(tty)) 2059 return; 2060 if (tty->rleft == rleft && tty->rright == rright) 2061 return; 2062 2063 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2064 2065 tty->rleft = rleft; 2066 tty->rright = rright; 2067 2068 if (rleft == 0 && rright == tty->sx - 1) 2069 tty_putcode(tty, TTYC_CLMG); 2070 else 2071 tty_putcode2(tty, TTYC_CMG, rleft, rright); 2072 tty->cx = tty->cy = UINT_MAX; 2073 } 2074 2075 /* 2076 * Move the cursor, unless it would wrap itself when the next character is 2077 * printed. 2078 */ 2079 static void 2080 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2081 u_int cx, u_int cy) 2082 { 2083 if (!ctx->wrapped || 2084 !tty_full_width(tty, ctx) || 2085 (tty->term->flags & TERM_NOAM) || 2086 ctx->xoff + cx != 0 || 2087 ctx->yoff + cy != tty->cy + 1 || 2088 tty->cx < tty->sx || 2089 tty->cy == tty->rlower) 2090 tty_cursor_pane(tty, ctx, cx, cy); 2091 else 2092 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2093 } 2094 2095 /* Move cursor inside pane. */ 2096 static void 2097 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2098 { 2099 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2100 } 2101 2102 /* Move cursor to absolute position. */ 2103 void 2104 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2105 { 2106 struct tty_term *term = tty->term; 2107 u_int thisx, thisy; 2108 int change; 2109 2110 if (tty->flags & TTY_BLOCK) 2111 return; 2112 2113 if (cx > tty->sx - 1) 2114 cx = tty->sx - 1; 2115 2116 thisx = tty->cx; 2117 thisy = tty->cy; 2118 2119 /* No change. */ 2120 if (cx == thisx && cy == thisy) 2121 return; 2122 2123 /* Very end of the line, just use absolute movement. */ 2124 if (thisx > tty->sx - 1) 2125 goto absolute; 2126 2127 /* Move to home position (0, 0). */ 2128 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2129 tty_putcode(tty, TTYC_HOME); 2130 goto out; 2131 } 2132 2133 /* Zero on the next line. */ 2134 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2135 (!tty_use_margin(tty) || tty->rleft == 0)) { 2136 tty_putc(tty, '\r'); 2137 tty_putc(tty, '\n'); 2138 goto out; 2139 } 2140 2141 /* Moving column or row. */ 2142 if (cy == thisy) { 2143 /* 2144 * Moving column only, row staying the same. 2145 */ 2146 2147 /* To left edge. */ 2148 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2149 tty_putc(tty, '\r'); 2150 goto out; 2151 } 2152 2153 /* One to the left. */ 2154 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2155 tty_putcode(tty, TTYC_CUB1); 2156 goto out; 2157 } 2158 2159 /* One to the right. */ 2160 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2161 tty_putcode(tty, TTYC_CUF1); 2162 goto out; 2163 } 2164 2165 /* Calculate difference. */ 2166 change = thisx - cx; /* +ve left, -ve right */ 2167 2168 /* 2169 * Use HPA if change is larger than absolute, otherwise move 2170 * the cursor with CUB/CUF. 2171 */ 2172 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2173 tty_putcode1(tty, TTYC_HPA, cx); 2174 goto out; 2175 } else if (change > 0 && 2176 tty_term_has(term, TTYC_CUB) && 2177 !tty_use_margin(tty)) { 2178 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2179 tty_putcode(tty, TTYC_CUB1); 2180 tty_putcode(tty, TTYC_CUB1); 2181 goto out; 2182 } 2183 tty_putcode1(tty, TTYC_CUB, change); 2184 goto out; 2185 } else if (change < 0 && 2186 tty_term_has(term, TTYC_CUF) && 2187 !tty_use_margin(tty)) { 2188 tty_putcode1(tty, TTYC_CUF, -change); 2189 goto out; 2190 } 2191 } else if (cx == thisx) { 2192 /* 2193 * Moving row only, column staying the same. 2194 */ 2195 2196 /* One above. */ 2197 if (thisy != tty->rupper && 2198 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2199 tty_putcode(tty, TTYC_CUU1); 2200 goto out; 2201 } 2202 2203 /* One below. */ 2204 if (thisy != tty->rlower && 2205 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2206 tty_putcode(tty, TTYC_CUD1); 2207 goto out; 2208 } 2209 2210 /* Calculate difference. */ 2211 change = thisy - cy; /* +ve up, -ve down */ 2212 2213 /* 2214 * Try to use VPA if change is larger than absolute or if this 2215 * change would cross the scroll region, otherwise use CUU/CUD. 2216 */ 2217 if ((u_int) abs(change) > cy || 2218 (change < 0 && cy - change > tty->rlower) || 2219 (change > 0 && cy - change < tty->rupper)) { 2220 if (tty_term_has(term, TTYC_VPA)) { 2221 tty_putcode1(tty, TTYC_VPA, cy); 2222 goto out; 2223 } 2224 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2225 tty_putcode1(tty, TTYC_CUU, change); 2226 goto out; 2227 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2228 tty_putcode1(tty, TTYC_CUD, -change); 2229 goto out; 2230 } 2231 } 2232 2233 absolute: 2234 /* Absolute movement. */ 2235 tty_putcode2(tty, TTYC_CUP, cy, cx); 2236 2237 out: 2238 tty->cx = cx; 2239 tty->cy = cy; 2240 } 2241 2242 void 2243 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2244 const struct grid_cell *defaults, int *palette) 2245 { 2246 struct grid_cell *tc = &tty->cell, gc2; 2247 int changed; 2248 2249 /* Copy cell and update default colours. */ 2250 memcpy(&gc2, gc, sizeof gc2); 2251 if (gc2.fg == 8) 2252 gc2.fg = defaults->fg; 2253 if (gc2.bg == 8) 2254 gc2.bg = defaults->bg; 2255 2256 /* Ignore cell if it is the same as the last one. */ 2257 if (gc2.attr == tty->last_cell.attr && 2258 gc2.fg == tty->last_cell.fg && 2259 gc2.bg == tty->last_cell.bg && 2260 gc2.us == tty->last_cell.us) 2261 return; 2262 2263 /* 2264 * If no setab, try to use the reverse attribute as a best-effort for a 2265 * non-default background. This is a bit of a hack but it doesn't do 2266 * any serious harm and makes a couple of applications happier. 2267 */ 2268 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2269 if (gc2.attr & GRID_ATTR_REVERSE) { 2270 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2271 gc2.attr &= ~GRID_ATTR_REVERSE; 2272 } else { 2273 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2274 gc2.attr |= GRID_ATTR_REVERSE; 2275 } 2276 } 2277 2278 /* Fix up the colours if necessary. */ 2279 tty_check_fg(tty, palette, &gc2); 2280 tty_check_bg(tty, palette, &gc2); 2281 tty_check_us(tty, palette, &gc2); 2282 2283 /* 2284 * If any bits are being cleared or the underline colour is now default, 2285 * reset everything. 2286 */ 2287 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2288 tty_reset(tty); 2289 2290 /* 2291 * Set the colours. This may call tty_reset() (so it comes next) and 2292 * may add to (NOT remove) the desired attributes. 2293 */ 2294 tty_colours(tty, &gc2); 2295 2296 /* Filter out attribute bits already set. */ 2297 changed = gc2.attr & ~tc->attr; 2298 tc->attr = gc2.attr; 2299 2300 /* Set the attributes. */ 2301 if (changed & GRID_ATTR_BRIGHT) 2302 tty_putcode(tty, TTYC_BOLD); 2303 if (changed & GRID_ATTR_DIM) 2304 tty_putcode(tty, TTYC_DIM); 2305 if (changed & GRID_ATTR_ITALICS) 2306 tty_set_italics(tty); 2307 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2308 if ((changed & GRID_ATTR_UNDERSCORE) || 2309 !tty_term_has(tty->term, TTYC_SMULX)) 2310 tty_putcode(tty, TTYC_SMUL); 2311 else if (changed & GRID_ATTR_UNDERSCORE_2) 2312 tty_putcode1(tty, TTYC_SMULX, 2); 2313 else if (changed & GRID_ATTR_UNDERSCORE_3) 2314 tty_putcode1(tty, TTYC_SMULX, 3); 2315 else if (changed & GRID_ATTR_UNDERSCORE_4) 2316 tty_putcode1(tty, TTYC_SMULX, 4); 2317 else if (changed & GRID_ATTR_UNDERSCORE_5) 2318 tty_putcode1(tty, TTYC_SMULX, 5); 2319 } 2320 if (changed & GRID_ATTR_BLINK) 2321 tty_putcode(tty, TTYC_BLINK); 2322 if (changed & GRID_ATTR_REVERSE) { 2323 if (tty_term_has(tty->term, TTYC_REV)) 2324 tty_putcode(tty, TTYC_REV); 2325 else if (tty_term_has(tty->term, TTYC_SMSO)) 2326 tty_putcode(tty, TTYC_SMSO); 2327 } 2328 if (changed & GRID_ATTR_HIDDEN) 2329 tty_putcode(tty, TTYC_INVIS); 2330 if (changed & GRID_ATTR_STRIKETHROUGH) 2331 tty_putcode(tty, TTYC_SMXX); 2332 if (changed & GRID_ATTR_OVERLINE) 2333 tty_putcode(tty, TTYC_SMOL); 2334 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2335 tty_putcode(tty, TTYC_SMACS); 2336 2337 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2338 } 2339 2340 static void 2341 tty_colours(struct tty *tty, const struct grid_cell *gc) 2342 { 2343 struct grid_cell *tc = &tty->cell; 2344 int have_ax; 2345 2346 /* No changes? Nothing is necessary. */ 2347 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2348 return; 2349 2350 /* 2351 * Is either the default colour? This is handled specially because the 2352 * best solution might be to reset both colours to default, in which 2353 * case if only one is default need to fall onward to set the other 2354 * colour. 2355 */ 2356 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2357 /* 2358 * If don't have AX but do have op, send sgr0 (op can't 2359 * actually be used because it is sometimes the same as sgr0 2360 * and sometimes isn't). This resets both colours to default. 2361 * 2362 * Otherwise, try to set the default colour only as needed. 2363 */ 2364 have_ax = tty_term_flag(tty->term, TTYC_AX); 2365 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2366 tty_reset(tty); 2367 else { 2368 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2369 if (have_ax) 2370 tty_puts(tty, "\033[39m"); 2371 else if (tc->fg != 7) 2372 tty_putcode1(tty, TTYC_SETAF, 7); 2373 tc->fg = gc->fg; 2374 } 2375 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2376 if (have_ax) 2377 tty_puts(tty, "\033[49m"); 2378 else if (tc->bg != 0) 2379 tty_putcode1(tty, TTYC_SETAB, 0); 2380 tc->bg = gc->bg; 2381 } 2382 } 2383 } 2384 2385 /* Set the foreground colour. */ 2386 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2387 tty_colours_fg(tty, gc); 2388 2389 /* 2390 * Set the background colour. This must come after the foreground as 2391 * tty_colour_fg() can call tty_reset(). 2392 */ 2393 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2394 tty_colours_bg(tty, gc); 2395 2396 /* Set the underscore color. */ 2397 if (gc->us != tc->us) 2398 tty_colours_us(tty, gc); 2399 } 2400 2401 static void 2402 tty_check_fg(struct tty *tty, int *palette, struct grid_cell *gc) 2403 { 2404 u_char r, g, b; 2405 u_int colours; 2406 int c; 2407 2408 /* 2409 * Perform substitution if this pane has a palette. If the bright 2410 * attribute is set, use the bright entry in the palette by changing to 2411 * the aixterm colour. 2412 */ 2413 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2414 c = gc->fg; 2415 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT) 2416 c += 90; 2417 if ((c = tty_get_palette(palette, c)) != -1) 2418 gc->fg = c; 2419 } 2420 2421 /* Is this a 24-bit colour? */ 2422 if (gc->fg & COLOUR_FLAG_RGB) { 2423 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2424 if (tty->term->flags & TERM_RGBCOLOURS) 2425 return; 2426 colour_split_rgb(gc->fg, &r, &g, &b); 2427 gc->fg = colour_find_rgb(r, g, b); 2428 } 2429 2430 /* How many colours does this terminal have? */ 2431 if (tty->term->flags & TERM_256COLOURS) 2432 colours = 256; 2433 else 2434 colours = tty_term_number(tty->term, TTYC_COLORS); 2435 2436 /* Is this a 256-colour colour? */ 2437 if (gc->fg & COLOUR_FLAG_256) { 2438 /* And not a 256 colour mode? */ 2439 if (colours < 256) { 2440 gc->fg = colour_256to16(gc->fg); 2441 if (gc->fg & 8) { 2442 gc->fg &= 7; 2443 if (colours >= 16) 2444 gc->fg += 90; 2445 } 2446 } 2447 return; 2448 } 2449 2450 /* Is this an aixterm colour? */ 2451 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2452 gc->fg -= 90; 2453 gc->attr |= GRID_ATTR_BRIGHT; 2454 } 2455 } 2456 2457 static void 2458 tty_check_bg(struct tty *tty, int *palette, struct grid_cell *gc) 2459 { 2460 u_char r, g, b; 2461 u_int colours; 2462 int c; 2463 2464 /* Perform substitution if this pane has a palette. */ 2465 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2466 if ((c = tty_get_palette(palette, gc->bg)) != -1) 2467 gc->bg = c; 2468 } 2469 2470 /* Is this a 24-bit colour? */ 2471 if (gc->bg & COLOUR_FLAG_RGB) { 2472 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2473 if (tty->term->flags & TERM_RGBCOLOURS) 2474 return; 2475 colour_split_rgb(gc->bg, &r, &g, &b); 2476 gc->bg = colour_find_rgb(r, g, b); 2477 } 2478 2479 /* How many colours does this terminal have? */ 2480 if (tty->term->flags & TERM_256COLOURS) 2481 colours = 256; 2482 else 2483 colours = tty_term_number(tty->term, TTYC_COLORS); 2484 2485 /* Is this a 256-colour colour? */ 2486 if (gc->bg & COLOUR_FLAG_256) { 2487 /* 2488 * And not a 256 colour mode? Translate to 16-colour 2489 * palette. Bold background doesn't exist portably, so just 2490 * discard the bold bit if set. 2491 */ 2492 if (colours < 256) { 2493 gc->bg = colour_256to16(gc->bg); 2494 if (gc->bg & 8) { 2495 gc->bg &= 7; 2496 if (colours >= 16) 2497 gc->bg += 90; 2498 } 2499 } 2500 return; 2501 } 2502 2503 /* Is this an aixterm colour? */ 2504 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2505 gc->bg -= 90; 2506 } 2507 2508 static void 2509 tty_check_us(__unused struct tty *tty, int *palette, struct grid_cell *gc) 2510 { 2511 int c; 2512 2513 /* Perform substitution if this pane has a palette. */ 2514 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2515 if ((c = tty_get_palette(palette, gc->us)) != -1) 2516 gc->us = c; 2517 } 2518 2519 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2520 if (gc->us & COLOUR_FLAG_256) 2521 gc->us = colour_256toRGB (gc->us); 2522 } 2523 2524 static void 2525 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2526 { 2527 struct grid_cell *tc = &tty->cell; 2528 char s[32]; 2529 2530 /* Is this a 24-bit or 256-colour colour? */ 2531 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2532 if (tty_try_colour(tty, gc->fg, "38") == 0) 2533 goto save; 2534 /* Should not get here, already converted in tty_check_fg. */ 2535 return; 2536 } 2537 2538 /* Is this an aixterm bright colour? */ 2539 if (gc->fg >= 90 && gc->fg <= 97) { 2540 if (tty->term->flags & TERM_256COLOURS) { 2541 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2542 tty_puts(tty, s); 2543 } else 2544 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8); 2545 goto save; 2546 } 2547 2548 /* Otherwise set the foreground colour. */ 2549 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2550 2551 save: 2552 /* Save the new values in the terminal current cell. */ 2553 tc->fg = gc->fg; 2554 } 2555 2556 static void 2557 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2558 { 2559 struct grid_cell *tc = &tty->cell; 2560 char s[32]; 2561 2562 /* Is this a 24-bit or 256-colour colour? */ 2563 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2564 if (tty_try_colour(tty, gc->bg, "48") == 0) 2565 goto save; 2566 /* Should not get here, already converted in tty_check_bg. */ 2567 return; 2568 } 2569 2570 /* Is this an aixterm bright colour? */ 2571 if (gc->bg >= 90 && gc->bg <= 97) { 2572 if (tty->term->flags & TERM_256COLOURS) { 2573 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2574 tty_puts(tty, s); 2575 } else 2576 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8); 2577 goto save; 2578 } 2579 2580 /* Otherwise set the background colour. */ 2581 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2582 2583 save: 2584 /* Save the new values in the terminal current cell. */ 2585 tc->bg = gc->bg; 2586 } 2587 2588 static void 2589 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2590 { 2591 struct grid_cell *tc = &tty->cell; 2592 u_int c; 2593 u_char r, g, b; 2594 2595 /* Clear underline colour. */ 2596 if (gc->us == 0) { 2597 tty_putcode(tty, TTYC_OL); 2598 goto save; 2599 } 2600 2601 /* Must be an RGB colour - this should never happen. */ 2602 if (~gc->us & COLOUR_FLAG_RGB) 2603 return; 2604 2605 /* 2606 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2607 * capability format. Calculate the colour value. 2608 */ 2609 colour_split_rgb(gc->us, &r, &g, &b); 2610 c = (65536 * r) + (256 * g) + b; 2611 2612 /* 2613 * Write the colour. Only use setal if the RGB flag is set because the 2614 * non-RGB version may be wrong. 2615 */ 2616 if (tty_term_has(tty->term, TTYC_SETULC)) 2617 tty_putcode1(tty, TTYC_SETULC, c); 2618 else if (tty_term_has(tty->term, TTYC_SETAL) && 2619 tty_term_has(tty->term, TTYC_RGB)) 2620 tty_putcode1(tty, TTYC_SETAL, c); 2621 2622 save: 2623 /* Save the new values in the terminal current cell. */ 2624 tc->us = gc->us; 2625 } 2626 2627 static int 2628 tty_try_colour(struct tty *tty, int colour, const char *type) 2629 { 2630 u_char r, g, b; 2631 2632 if (colour & COLOUR_FLAG_256) { 2633 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2634 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2635 else if (tty_term_has(tty->term, TTYC_SETAB)) 2636 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2637 return (0); 2638 } 2639 2640 if (colour & COLOUR_FLAG_RGB) { 2641 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2642 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2643 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2644 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2645 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2646 return (0); 2647 } 2648 2649 return (-1); 2650 } 2651 2652 static void 2653 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2654 { 2655 memcpy(gc, &grid_default_cell, sizeof *gc); 2656 gc->fg = wp->fg; 2657 gc->bg = wp->bg; 2658 } 2659 2660 void 2661 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2662 { 2663 struct options *oo = wp->options; 2664 2665 memcpy(gc, &grid_default_cell, sizeof *gc); 2666 2667 if (wp->flags & PANE_STYLECHANGED) { 2668 wp->flags &= ~PANE_STYLECHANGED; 2669 2670 tty_window_default_style(&wp->cached_active_gc, wp); 2671 style_add(&wp->cached_active_gc, oo, "window-active-style", 2672 NULL); 2673 tty_window_default_style(&wp->cached_gc, wp); 2674 style_add(&wp->cached_gc, oo, "window-style", NULL); 2675 } 2676 2677 if (gc->fg == 8) { 2678 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2679 gc->fg = wp->cached_active_gc.fg; 2680 else 2681 gc->fg = wp->cached_gc.fg; 2682 } 2683 2684 if (gc->bg == 8) { 2685 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2686 gc->bg = wp->cached_active_gc.bg; 2687 else 2688 gc->bg = wp->cached_gc.bg; 2689 } 2690 } 2691 2692 static void 2693 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2694 int *palette, u_int bg) 2695 { 2696 struct grid_cell gc; 2697 2698 memcpy(&gc, &grid_default_cell, sizeof gc); 2699 gc.bg = bg; 2700 tty_attributes(tty, &gc, defaults, palette); 2701 } 2702