1 /* $OpenBSD: tty.c,v 1.393 2021/06/10 07:59:31 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 = SCREEN_CURSOR_DEFAULT; 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->cstyle != SCREEN_CURSOR_DEFAULT) { 396 if (tty_term_has(tty->term, TTYC_SE)) 397 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 398 else if (tty_term_has(tty->term, TTYC_SS)) 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 enum screen_cursor_style cstyle = tty->cstyle; 663 664 if (tty->flags & TTY_NOCURSOR) 665 mode &= ~MODE_CURSOR; 666 667 changed = mode ^ tty->mode; 668 if (log_get_level() != 0 && changed != 0) { 669 log_debug("%s: current mode %s", c->name, 670 screen_mode_to_string(tty->mode)); 671 log_debug("%s: setting mode %s", c->name, 672 screen_mode_to_string(mode)); 673 } 674 675 if (s != NULL) { 676 if (strcmp(s->ccolour, tty->ccolour) != 0) 677 tty_force_cursor_colour(tty, s->ccolour); 678 cstyle = s->cstyle; 679 } 680 if (~mode & MODE_CURSOR) { 681 /* Cursor now off - set as invisible. */ 682 if (changed & MODE_CURSOR) 683 tty_putcode(tty, TTYC_CIVIS); 684 } else if ((changed & (MODE_CURSOR|MODE_BLINKING)) || 685 cstyle != tty->cstyle) { 686 /* 687 * Cursor now on, blinking flag changed or style changed. Start 688 * by setting the cursor to normal. 689 */ 690 tty_putcode(tty, TTYC_CNORM); 691 switch (cstyle) { 692 case SCREEN_CURSOR_DEFAULT: 693 /* 694 * If the old style wasn't default, then reset it to 695 * default. 696 */ 697 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 698 if (tty_term_has(tty->term, TTYC_SE)) 699 tty_putcode(tty, TTYC_SE); 700 else 701 tty_putcode1(tty, TTYC_SS, 0); 702 } 703 704 /* Set the cursor as very visible if necessary. */ 705 if (mode & MODE_BLINKING) 706 tty_putcode(tty, TTYC_CVVIS); 707 break; 708 case SCREEN_CURSOR_BLOCK: 709 /* 710 * Set style to either block blinking (1) or steady (2) 711 * if supported, otherwise just check the blinking 712 * flag. 713 */ 714 if (tty_term_has(tty->term, TTYC_SS)) { 715 if (mode & MODE_BLINKING) 716 tty_putcode1(tty, TTYC_SS, 1); 717 else 718 tty_putcode1(tty, TTYC_SS, 2); 719 } else if (mode & MODE_BLINKING) 720 tty_putcode(tty, TTYC_CVVIS); 721 break; 722 case SCREEN_CURSOR_UNDERLINE: 723 /* 724 * Set style to either underline blinking (3) or steady 725 * (4) if supported, otherwise just check the blinking 726 * flag. 727 */ 728 if (tty_term_has(tty->term, TTYC_SS)) { 729 if (mode & MODE_BLINKING) 730 tty_putcode1(tty, TTYC_SS, 3); 731 else 732 tty_putcode1(tty, TTYC_SS, 4); 733 } else if (mode & MODE_BLINKING) 734 tty_putcode(tty, TTYC_CVVIS); 735 break; 736 case SCREEN_CURSOR_BAR: 737 /* 738 * Set style to either bar blinking (5) or steady (6) 739 * if supported, otherwise just check the blinking 740 * flag. 741 */ 742 if (tty_term_has(tty->term, TTYC_SS)) { 743 if (mode & MODE_BLINKING) 744 tty_putcode1(tty, TTYC_SS, 5); 745 else 746 tty_putcode1(tty, TTYC_SS, 6); 747 } else if (mode & MODE_BLINKING) 748 tty_putcode(tty, TTYC_CVVIS); 749 break; 750 } 751 tty->cstyle = cstyle; 752 } 753 754 if ((changed & ALL_MOUSE_MODES) && 755 tty_term_has(tty->term, TTYC_KMOUS)) { 756 /* 757 * If the mouse modes have changed, clear any that are set and 758 * apply again. There are differences in how terminals track 759 * the various bits. 760 */ 761 if (tty->mode & MODE_MOUSE_SGR) 762 tty_puts(tty, "\033[?1006l"); 763 if (tty->mode & MODE_MOUSE_STANDARD) 764 tty_puts(tty, "\033[?1000l"); 765 if (tty->mode & MODE_MOUSE_BUTTON) 766 tty_puts(tty, "\033[?1002l"); 767 if (tty->mode & MODE_MOUSE_ALL) 768 tty_puts(tty, "\033[?1003l"); 769 if (mode & ALL_MOUSE_MODES) 770 tty_puts(tty, "\033[?1006h"); 771 if (mode & MODE_MOUSE_STANDARD) 772 tty_puts(tty, "\033[?1000h"); 773 if (mode & MODE_MOUSE_BUTTON) 774 tty_puts(tty, "\033[?1002h"); 775 if (mode & MODE_MOUSE_ALL) 776 tty_puts(tty, "\033[?1003h"); 777 } 778 if (changed & MODE_BRACKETPASTE) { 779 if (mode & MODE_BRACKETPASTE) 780 tty_putcode(tty, TTYC_ENBP); 781 else 782 tty_putcode(tty, TTYC_DSBP); 783 } 784 tty->mode = mode; 785 } 786 787 static void 788 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 789 enum tty_code_code code1, u_int n) 790 { 791 if (tty_term_has(tty->term, code)) 792 tty_putcode1(tty, code, n); 793 else { 794 while (n-- > 0) 795 tty_putcode(tty, code1); 796 } 797 } 798 799 static void 800 tty_repeat_space(struct tty *tty, u_int n) 801 { 802 static char s[500]; 803 804 if (*s != ' ') 805 memset(s, ' ', sizeof s); 806 807 while (n > sizeof s) { 808 tty_putn(tty, s, sizeof s, sizeof s); 809 n -= sizeof s; 810 } 811 if (n != 0) 812 tty_putn(tty, s, n, n); 813 } 814 815 /* Is this window bigger than the terminal? */ 816 int 817 tty_window_bigger(struct tty *tty) 818 { 819 struct client *c = tty->client; 820 struct window *w = c->session->curw->window; 821 822 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 823 } 824 825 /* What offset should this window be drawn at? */ 826 int 827 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 828 { 829 *ox = tty->oox; 830 *oy = tty->ooy; 831 *sx = tty->osx; 832 *sy = tty->osy; 833 834 return (tty->oflag); 835 } 836 837 /* What offset should this window be drawn at? */ 838 static int 839 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 840 { 841 struct client *c = tty->client; 842 struct window *w = c->session->curw->window; 843 struct window_pane *wp = server_client_get_pane(c); 844 u_int cx, cy, lines; 845 846 lines = status_line_size(c); 847 848 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 849 *ox = 0; 850 *oy = 0; 851 *sx = w->sx; 852 *sy = w->sy; 853 854 c->pan_window = NULL; 855 return (0); 856 } 857 858 *sx = tty->sx; 859 *sy = tty->sy - lines; 860 861 if (c->pan_window == w) { 862 if (*sx >= w->sx) 863 c->pan_ox = 0; 864 else if (c->pan_ox + *sx > w->sx) 865 c->pan_ox = w->sx - *sx; 866 *ox = c->pan_ox; 867 if (*sy >= w->sy) 868 c->pan_oy = 0; 869 else if (c->pan_oy + *sy > w->sy) 870 c->pan_oy = w->sy - *sy; 871 *oy = c->pan_oy; 872 return (1); 873 } 874 875 if (~wp->screen->mode & MODE_CURSOR) { 876 *ox = 0; 877 *oy = 0; 878 } else { 879 cx = wp->xoff + wp->screen->cx; 880 cy = wp->yoff + wp->screen->cy; 881 882 if (cx < *sx) 883 *ox = 0; 884 else if (cx > w->sx - *sx) 885 *ox = w->sx - *sx; 886 else 887 *ox = cx - *sx / 2; 888 889 if (cy < *sy) 890 *oy = 0; 891 else if (cy > w->sy - *sy) 892 *oy = w->sy - *sy; 893 else 894 *oy = cy - *sy / 2; 895 } 896 897 c->pan_window = NULL; 898 return (1); 899 } 900 901 /* Update stored offsets for a window and redraw if necessary. */ 902 void 903 tty_update_window_offset(struct window *w) 904 { 905 struct client *c; 906 907 TAILQ_FOREACH(c, &clients, entry) { 908 if (c->session != NULL && c->session->curw->window == w) 909 tty_update_client_offset(c); 910 } 911 } 912 913 /* Update stored offsets for a client and redraw if necessary. */ 914 void 915 tty_update_client_offset(struct client *c) 916 { 917 u_int ox, oy, sx, sy; 918 919 if (~c->flags & CLIENT_TERMINAL) 920 return; 921 922 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 923 if (ox == c->tty.oox && 924 oy == c->tty.ooy && 925 sx == c->tty.osx && 926 sy == c->tty.osy) 927 return; 928 929 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 930 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 931 ox, oy, sx, sy); 932 933 c->tty.oox = ox; 934 c->tty.ooy = oy; 935 c->tty.osx = sx; 936 c->tty.osy = sy; 937 938 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 939 } 940 941 /* Get a palette entry. */ 942 static int 943 tty_get_palette(int *palette, int c) 944 { 945 int new; 946 947 if (palette == NULL) 948 return (-1); 949 950 new = -1; 951 if (c < 8) 952 new = palette[c]; 953 else if (c >= 90 && c <= 97) 954 new = palette[8 + c - 90]; 955 else if (c & COLOUR_FLAG_256) 956 new = palette[c & ~COLOUR_FLAG_256]; 957 if (new == 0) 958 return (-1); 959 return (new); 960 } 961 962 /* 963 * Is the region large enough to be worth redrawing once later rather than 964 * probably several times now? Currently yes if it is more than 50% of the 965 * pane. 966 */ 967 static int 968 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 969 { 970 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 971 } 972 973 /* 974 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 975 * emulated. 976 */ 977 static int 978 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 979 { 980 if (tty_term_flag(tty->term, TTYC_BCE)) 981 return (0); 982 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 983 return (1); 984 return (0); 985 } 986 987 /* 988 * Redraw scroll region using data from screen (already updated). Used when 989 * CSR not supported, or window is a pane that doesn't take up the full 990 * width of the terminal. 991 */ 992 static void 993 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 994 { 995 struct client *c = tty->client; 996 u_int i; 997 998 /* 999 * If region is large, schedule a redraw. In most cases this is likely 1000 * to be followed by some more scrolling. 1001 */ 1002 if (tty_large_region(tty, ctx)) { 1003 log_debug("%s: %s large redraw", __func__, c->name); 1004 ctx->redraw_cb(ctx); 1005 return; 1006 } 1007 1008 for (i = ctx->orupper; i <= ctx->orlower; i++) 1009 tty_draw_pane(tty, ctx, i); 1010 } 1011 1012 /* Is this position visible in the pane? */ 1013 static int 1014 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1015 u_int py, u_int nx, u_int ny) 1016 { 1017 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1018 1019 if (!ctx->bigger) 1020 return (1); 1021 1022 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1023 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1024 return (0); 1025 return (1); 1026 } 1027 1028 /* Clamp line position to visible part of pane. */ 1029 static int 1030 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1031 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1032 { 1033 u_int xoff = ctx->rxoff + px; 1034 1035 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1036 return (0); 1037 *ry = ctx->yoff + py - ctx->woy; 1038 1039 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1040 /* All visible. */ 1041 *i = 0; 1042 *x = ctx->xoff + px - ctx->wox; 1043 *rx = nx; 1044 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1045 /* Both left and right not visible. */ 1046 *i = ctx->wox; 1047 *x = 0; 1048 *rx = ctx->wsx; 1049 } else if (xoff < ctx->wox) { 1050 /* Left not visible. */ 1051 *i = ctx->wox - (ctx->xoff + px); 1052 *x = 0; 1053 *rx = nx - *i; 1054 } else { 1055 /* Right not visible. */ 1056 *i = 0; 1057 *x = (ctx->xoff + px) - ctx->wox; 1058 *rx = ctx->wsx - *x; 1059 } 1060 if (*rx > nx) 1061 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1062 1063 return (1); 1064 } 1065 1066 /* Clear a line. */ 1067 static void 1068 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1069 u_int px, u_int nx, u_int bg) 1070 { 1071 struct client *c = tty->client; 1072 1073 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1074 1075 /* Nothing to clear. */ 1076 if (nx == 0) 1077 return; 1078 1079 /* If genuine BCE is available, can try escape sequences. */ 1080 if (!tty_fake_bce(tty, defaults, bg)) { 1081 /* Off the end of the line, use EL if available. */ 1082 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1083 tty_cursor(tty, px, py); 1084 tty_putcode(tty, TTYC_EL); 1085 return; 1086 } 1087 1088 /* At the start of the line. Use EL1. */ 1089 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1090 tty_cursor(tty, px + nx - 1, py); 1091 tty_putcode(tty, TTYC_EL1); 1092 return; 1093 } 1094 1095 /* Section of line. Use ECH if possible. */ 1096 if (tty_term_has(tty->term, TTYC_ECH)) { 1097 tty_cursor(tty, px, py); 1098 tty_putcode1(tty, TTYC_ECH, nx); 1099 return; 1100 } 1101 } 1102 1103 /* Couldn't use an escape sequence, use spaces. */ 1104 tty_cursor(tty, px, py); 1105 tty_repeat_space(tty, nx); 1106 } 1107 1108 /* Clear a line, adjusting to visible part of pane. */ 1109 static void 1110 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1111 u_int px, u_int nx, u_int bg) 1112 { 1113 struct client *c = tty->client; 1114 u_int i, x, rx, ry; 1115 1116 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1117 1118 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1119 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1120 } 1121 1122 /* Clamp area position to visible part of pane. */ 1123 static int 1124 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1125 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1126 u_int *ry) 1127 { 1128 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1129 1130 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1131 return (0); 1132 1133 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1134 /* All visible. */ 1135 *i = 0; 1136 *x = ctx->xoff + px - ctx->wox; 1137 *rx = nx; 1138 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1139 /* Both left and right not visible. */ 1140 *i = ctx->wox; 1141 *x = 0; 1142 *rx = ctx->wsx; 1143 } else if (xoff < ctx->wox) { 1144 /* Left not visible. */ 1145 *i = ctx->wox - (ctx->xoff + px); 1146 *x = 0; 1147 *rx = nx - *i; 1148 } else { 1149 /* Right not visible. */ 1150 *i = 0; 1151 *x = (ctx->xoff + px) - ctx->wox; 1152 *rx = ctx->wsx - *x; 1153 } 1154 if (*rx > nx) 1155 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1156 1157 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1158 /* All visible. */ 1159 *j = 0; 1160 *y = ctx->yoff + py - ctx->woy; 1161 *ry = ny; 1162 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1163 /* Both top and bottom not visible. */ 1164 *j = ctx->woy; 1165 *y = 0; 1166 *ry = ctx->wsy; 1167 } else if (yoff < ctx->woy) { 1168 /* Top not visible. */ 1169 *j = ctx->woy - (ctx->yoff + py); 1170 *y = 0; 1171 *ry = ny - *j; 1172 } else { 1173 /* Bottom not visible. */ 1174 *j = 0; 1175 *y = (ctx->yoff + py) - ctx->woy; 1176 *ry = ctx->wsy - *y; 1177 } 1178 if (*ry > ny) 1179 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1180 1181 return (1); 1182 } 1183 1184 /* Clear an area, adjusting to visible part of pane. */ 1185 static void 1186 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1187 u_int ny, u_int px, u_int nx, u_int bg) 1188 { 1189 struct client *c = tty->client; 1190 u_int yy; 1191 char tmp[64]; 1192 1193 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1194 1195 /* Nothing to clear. */ 1196 if (nx == 0 || ny == 0) 1197 return; 1198 1199 /* If genuine BCE is available, can try escape sequences. */ 1200 if (!tty_fake_bce(tty, defaults, bg)) { 1201 /* Use ED if clearing off the bottom of the terminal. */ 1202 if (px == 0 && 1203 px + nx >= tty->sx && 1204 py + ny >= tty->sy && 1205 tty_term_has(tty->term, TTYC_ED)) { 1206 tty_cursor(tty, 0, py); 1207 tty_putcode(tty, TTYC_ED); 1208 return; 1209 } 1210 1211 /* 1212 * On VT420 compatible terminals we can use DECFRA if the 1213 * background colour isn't default (because it doesn't work 1214 * after SGR 0). 1215 */ 1216 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1217 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1218 py + 1, px + 1, py + ny, px + nx); 1219 tty_puts(tty, tmp); 1220 return; 1221 } 1222 1223 /* Full lines can be scrolled away to clear them. */ 1224 if (px == 0 && 1225 px + nx >= tty->sx && 1226 ny > 2 && 1227 tty_term_has(tty->term, TTYC_CSR) && 1228 tty_term_has(tty->term, TTYC_INDN)) { 1229 tty_region(tty, py, py + ny - 1); 1230 tty_margin_off(tty); 1231 tty_putcode1(tty, TTYC_INDN, ny); 1232 return; 1233 } 1234 1235 /* 1236 * If margins are supported, can just scroll the area off to 1237 * clear it. 1238 */ 1239 if (nx > 2 && 1240 ny > 2 && 1241 tty_term_has(tty->term, TTYC_CSR) && 1242 tty_use_margin(tty) && 1243 tty_term_has(tty->term, TTYC_INDN)) { 1244 tty_region(tty, py, py + ny - 1); 1245 tty_margin(tty, px, px + nx - 1); 1246 tty_putcode1(tty, TTYC_INDN, ny); 1247 return; 1248 } 1249 } 1250 1251 /* Couldn't use an escape sequence, loop over the lines. */ 1252 for (yy = py; yy < py + ny; yy++) 1253 tty_clear_line(tty, defaults, yy, px, nx, bg); 1254 } 1255 1256 /* Clear an area in a pane. */ 1257 static void 1258 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1259 u_int ny, u_int px, u_int nx, u_int bg) 1260 { 1261 u_int i, j, x, y, rx, ry; 1262 1263 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1264 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1265 } 1266 1267 static void 1268 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1269 { 1270 struct screen *s = ctx->s; 1271 u_int nx = ctx->sx, i, x, rx, ry; 1272 1273 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1274 1275 if (!ctx->bigger) { 1276 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1277 &ctx->defaults, ctx->palette); 1278 return; 1279 } 1280 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1281 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1282 ctx->palette); 1283 } 1284 } 1285 1286 static const struct grid_cell * 1287 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1288 { 1289 static struct grid_cell new; 1290 int c; 1291 1292 /* Characters less than 0x7f are always fine, no matter what. */ 1293 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1294 return (gc); 1295 1296 /* UTF-8 terminal and a UTF-8 character - fine. */ 1297 if (tty->client->flags & CLIENT_UTF8) 1298 return (gc); 1299 memcpy(&new, gc, sizeof new); 1300 1301 /* See if this can be mapped to an ACS character. */ 1302 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1303 if (c != -1) { 1304 utf8_set(&new.data, c); 1305 new.attr |= GRID_ATTR_CHARSET; 1306 return (&new); 1307 } 1308 1309 /* Replace by the right number of underscores. */ 1310 new.data.size = gc->data.width; 1311 if (new.data.size > UTF8_SIZE) 1312 new.data.size = UTF8_SIZE; 1313 memset(new.data.data, '_', new.data.size); 1314 return (&new); 1315 } 1316 1317 static int 1318 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1319 { 1320 struct client *c = tty->client; 1321 1322 if (c->overlay_check == NULL) 1323 return (1); 1324 return (c->overlay_check(c, px, py)); 1325 } 1326 1327 void 1328 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1329 u_int atx, u_int aty, const struct grid_cell *defaults, int *palette) 1330 { 1331 struct grid *gd = s->grid; 1332 struct grid_cell gc, last; 1333 const struct grid_cell *gcp; 1334 struct grid_line *gl; 1335 u_int i, j, ux, sx, width; 1336 int flags, cleared = 0, wrapped = 0; 1337 char buf[512]; 1338 size_t len; 1339 u_int cellsize; 1340 1341 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1342 px, py, nx, atx, aty); 1343 1344 /* 1345 * py is the line in the screen to draw. 1346 * px is the start x and nx is the width to draw. 1347 * atx,aty is the line on the terminal to draw it. 1348 */ 1349 1350 flags = (tty->flags & TTY_NOCURSOR); 1351 tty->flags |= TTY_NOCURSOR; 1352 tty_update_mode(tty, tty->mode, s); 1353 1354 tty_region_off(tty); 1355 tty_margin_off(tty); 1356 1357 /* 1358 * Clamp the width to cellsize - note this is not cellused, because 1359 * there may be empty background cells after it (from BCE). 1360 */ 1361 sx = screen_size_x(s); 1362 if (nx > sx) 1363 nx = sx; 1364 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1365 if (sx > cellsize) 1366 sx = cellsize; 1367 if (sx > tty->sx) 1368 sx = tty->sx; 1369 if (sx > nx) 1370 sx = nx; 1371 ux = 0; 1372 1373 if (py == 0) 1374 gl = NULL; 1375 else 1376 gl = grid_get_line(gd, gd->hsize + py - 1); 1377 if (gl == NULL || 1378 (~gl->flags & GRID_LINE_WRAPPED) || 1379 atx != 0 || 1380 tty->cx < tty->sx || 1381 nx < tty->sx) { 1382 if (nx < tty->sx && 1383 atx == 0 && 1384 px + sx != nx && 1385 tty_term_has(tty->term, TTYC_EL1) && 1386 !tty_fake_bce(tty, defaults, 8)) { 1387 tty_default_attributes(tty, defaults, palette, 8); 1388 tty_cursor(tty, nx - 1, aty); 1389 tty_putcode(tty, TTYC_EL1); 1390 cleared = 1; 1391 } 1392 } else { 1393 log_debug("%s: wrapped line %u", __func__, aty); 1394 wrapped = 1; 1395 } 1396 1397 memcpy(&last, &grid_default_cell, sizeof last); 1398 len = 0; 1399 width = 0; 1400 1401 for (i = 0; i < sx; i++) { 1402 grid_view_get_cell(gd, px + i, py, &gc); 1403 gcp = tty_check_codeset(tty, &gc); 1404 if (len != 0 && 1405 (!tty_check_overlay(tty, atx + ux + width, aty) || 1406 (gcp->attr & GRID_ATTR_CHARSET) || 1407 gcp->flags != last.flags || 1408 gcp->attr != last.attr || 1409 gcp->fg != last.fg || 1410 gcp->bg != last.bg || 1411 gcp->us != last.us || 1412 ux + width + gcp->data.width > nx || 1413 (sizeof buf) - len < gcp->data.size)) { 1414 tty_attributes(tty, &last, defaults, palette); 1415 if (last.flags & GRID_FLAG_CLEARED) { 1416 log_debug("%s: %zu cleared", __func__, len); 1417 tty_clear_line(tty, defaults, aty, atx + ux, 1418 width, last.bg); 1419 } else { 1420 if (!wrapped || atx != 0 || ux != 0) 1421 tty_cursor(tty, atx + ux, aty); 1422 tty_putn(tty, buf, len, width); 1423 } 1424 ux += width; 1425 1426 len = 0; 1427 width = 0; 1428 wrapped = 0; 1429 } 1430 1431 if (gcp->flags & GRID_FLAG_SELECTED) 1432 screen_select_cell(s, &last, gcp); 1433 else 1434 memcpy(&last, gcp, sizeof last); 1435 if (!tty_check_overlay(tty, atx + ux, aty)) { 1436 if (~gcp->flags & GRID_FLAG_PADDING) 1437 ux += gcp->data.width; 1438 } else if (ux + gcp->data.width > nx) { 1439 tty_attributes(tty, &last, defaults, palette); 1440 tty_cursor(tty, atx + ux, aty); 1441 for (j = 0; j < gcp->data.width; j++) { 1442 if (ux + j > nx) 1443 break; 1444 tty_putc(tty, ' '); 1445 ux++; 1446 } 1447 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1448 tty_attributes(tty, &last, defaults, palette); 1449 tty_cursor(tty, atx + ux, aty); 1450 for (j = 0; j < gcp->data.size; j++) 1451 tty_putc(tty, gcp->data.data[j]); 1452 ux += gcp->data.width; 1453 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1454 memcpy(buf + len, gcp->data.data, gcp->data.size); 1455 len += gcp->data.size; 1456 width += gcp->data.width; 1457 } 1458 } 1459 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1460 tty_attributes(tty, &last, defaults, palette); 1461 if (last.flags & GRID_FLAG_CLEARED) { 1462 log_debug("%s: %zu cleared (end)", __func__, len); 1463 tty_clear_line(tty, defaults, aty, atx + ux, width, 1464 last.bg); 1465 } else { 1466 if (!wrapped || atx != 0 || ux != 0) 1467 tty_cursor(tty, atx + ux, aty); 1468 tty_putn(tty, buf, len, width); 1469 } 1470 ux += width; 1471 } 1472 1473 if (!cleared && ux < nx) { 1474 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1475 nx - ux, len); 1476 tty_default_attributes(tty, defaults, palette, 8); 1477 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1478 } 1479 1480 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1481 tty_update_mode(tty, tty->mode, s); 1482 } 1483 1484 void 1485 tty_sync_start(struct tty *tty) 1486 { 1487 if (tty->flags & TTY_BLOCK) 1488 return; 1489 if (tty->flags & TTY_SYNCING) 1490 return; 1491 tty->flags |= TTY_SYNCING; 1492 1493 if (tty_term_has(tty->term, TTYC_SYNC)) { 1494 log_debug("%s sync start", tty->client->name); 1495 tty_putcode1(tty, TTYC_SYNC, 1); 1496 } 1497 } 1498 1499 void 1500 tty_sync_end(struct tty *tty) 1501 { 1502 if (tty->flags & TTY_BLOCK) 1503 return; 1504 if (~tty->flags & TTY_SYNCING) 1505 return; 1506 tty->flags &= ~TTY_SYNCING; 1507 1508 if (tty_term_has(tty->term, TTYC_SYNC)) { 1509 log_debug("%s sync end", tty->client->name); 1510 tty_putcode1(tty, TTYC_SYNC, 2); 1511 } 1512 } 1513 1514 static int 1515 tty_client_ready(struct client *c) 1516 { 1517 if (c->session == NULL || c->tty.term == NULL) 1518 return (0); 1519 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED)) 1520 return (0); 1521 if (c->tty.flags & TTY_FREEZE) 1522 return (0); 1523 return (1); 1524 } 1525 1526 void 1527 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1528 struct tty_ctx *ctx) 1529 { 1530 struct client *c; 1531 int state; 1532 1533 if (ctx->set_client_cb == NULL) 1534 return; 1535 TAILQ_FOREACH(c, &clients, entry) { 1536 if (!tty_client_ready(c)) 1537 continue; 1538 state = ctx->set_client_cb(ctx, c); 1539 if (state == -1) 1540 break; 1541 if (state == 0) 1542 continue; 1543 cmdfn(&c->tty, ctx); 1544 } 1545 } 1546 1547 void 1548 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1549 { 1550 if (ctx->bigger || 1551 !tty_full_width(tty, ctx) || 1552 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1553 (!tty_term_has(tty->term, TTYC_ICH) && 1554 !tty_term_has(tty->term, TTYC_ICH1))) { 1555 tty_draw_pane(tty, ctx, ctx->ocy); 1556 return; 1557 } 1558 1559 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1560 1561 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1562 1563 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1564 } 1565 1566 void 1567 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1568 { 1569 if (ctx->bigger || 1570 !tty_full_width(tty, ctx) || 1571 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1572 (!tty_term_has(tty->term, TTYC_DCH) && 1573 !tty_term_has(tty->term, TTYC_DCH1))) { 1574 tty_draw_pane(tty, ctx, ctx->ocy); 1575 return; 1576 } 1577 1578 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1579 1580 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1581 1582 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1583 } 1584 1585 void 1586 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1587 { 1588 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1589 1590 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1591 } 1592 1593 void 1594 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1595 { 1596 if (ctx->bigger || 1597 !tty_full_width(tty, ctx) || 1598 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1599 !tty_term_has(tty->term, TTYC_CSR) || 1600 !tty_term_has(tty->term, TTYC_IL1) || 1601 ctx->sx == 1 || 1602 ctx->sy == 1) { 1603 tty_redraw_region(tty, ctx); 1604 return; 1605 } 1606 1607 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1608 1609 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1610 tty_margin_off(tty); 1611 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1612 1613 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1614 tty->cx = tty->cy = UINT_MAX; 1615 } 1616 1617 void 1618 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1619 { 1620 if (ctx->bigger || 1621 !tty_full_width(tty, ctx) || 1622 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1623 !tty_term_has(tty->term, TTYC_CSR) || 1624 !tty_term_has(tty->term, TTYC_DL1) || 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_off(tty); 1635 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1636 1637 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1638 tty->cx = tty->cy = UINT_MAX; 1639 } 1640 1641 void 1642 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1643 { 1644 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1645 1646 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1647 } 1648 1649 void 1650 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1651 { 1652 u_int nx = ctx->sx - ctx->ocx; 1653 1654 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1655 1656 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1657 } 1658 1659 void 1660 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1661 { 1662 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1663 1664 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1665 } 1666 1667 void 1668 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1669 { 1670 if (ctx->ocy != ctx->orupper) 1671 return; 1672 1673 if (ctx->bigger || 1674 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1675 tty_fake_bce(tty, &ctx->defaults, 8) || 1676 !tty_term_has(tty->term, TTYC_CSR) || 1677 (!tty_term_has(tty->term, TTYC_RI) && 1678 !tty_term_has(tty->term, TTYC_RIN)) || 1679 ctx->sx == 1 || 1680 ctx->sy == 1) { 1681 tty_redraw_region(tty, ctx); 1682 return; 1683 } 1684 1685 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1686 1687 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1688 tty_margin_pane(tty, ctx); 1689 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1690 1691 if (tty_term_has(tty->term, TTYC_RI)) 1692 tty_putcode(tty, TTYC_RI); 1693 else 1694 tty_putcode1(tty, TTYC_RIN, 1); 1695 } 1696 1697 void 1698 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1699 { 1700 if (ctx->ocy != ctx->orlower) 1701 return; 1702 1703 if (ctx->bigger || 1704 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1705 tty_fake_bce(tty, &ctx->defaults, 8) || 1706 !tty_term_has(tty->term, TTYC_CSR) || 1707 ctx->sx == 1 || 1708 ctx->sy == 1) { 1709 tty_redraw_region(tty, ctx); 1710 return; 1711 } 1712 1713 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1714 1715 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1716 tty_margin_pane(tty, ctx); 1717 1718 /* 1719 * If we want to wrap a pane while using margins, the cursor needs to 1720 * be exactly on the right of the region. If the cursor is entirely off 1721 * the edge - move it back to the right. Some terminals are funny about 1722 * this and insert extra spaces, so only use the right if margins are 1723 * enabled. 1724 */ 1725 if (ctx->xoff + ctx->ocx > tty->rright) { 1726 if (!tty_use_margin(tty)) 1727 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1728 else 1729 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1730 } else 1731 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1732 1733 tty_putc(tty, '\n'); 1734 } 1735 1736 void 1737 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1738 { 1739 u_int i; 1740 1741 if (ctx->bigger || 1742 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1743 tty_fake_bce(tty, &ctx->defaults, 8) || 1744 !tty_term_has(tty->term, TTYC_CSR) || 1745 ctx->sx == 1 || 1746 ctx->sy == 1) { 1747 tty_redraw_region(tty, ctx); 1748 return; 1749 } 1750 1751 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1752 1753 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1754 tty_margin_pane(tty, ctx); 1755 1756 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1757 if (!tty_use_margin(tty)) 1758 tty_cursor(tty, 0, tty->rlower); 1759 else 1760 tty_cursor(tty, tty->rright, tty->rlower); 1761 for (i = 0; i < ctx->num; i++) 1762 tty_putc(tty, '\n'); 1763 } else { 1764 if (tty->cy == UINT_MAX) 1765 tty_cursor(tty, 0, 0); 1766 else 1767 tty_cursor(tty, 0, tty->cy); 1768 tty_putcode1(tty, TTYC_INDN, ctx->num); 1769 } 1770 } 1771 1772 void 1773 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1774 { 1775 u_int i; 1776 1777 if (ctx->bigger || 1778 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1779 tty_fake_bce(tty, &ctx->defaults, 8) || 1780 !tty_term_has(tty->term, TTYC_CSR) || 1781 (!tty_term_has(tty->term, TTYC_RI) && 1782 !tty_term_has(tty->term, TTYC_RIN)) || 1783 ctx->sx == 1 || 1784 ctx->sy == 1) { 1785 tty_redraw_region(tty, ctx); 1786 return; 1787 } 1788 1789 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1790 1791 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1792 tty_margin_pane(tty, ctx); 1793 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1794 1795 if (tty_term_has(tty->term, TTYC_RIN)) 1796 tty_putcode1(tty, TTYC_RIN, ctx->num); 1797 else { 1798 for (i = 0; i < ctx->num; i++) 1799 tty_putcode(tty, TTYC_RI); 1800 } 1801 } 1802 1803 void 1804 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1805 { 1806 u_int px, py, nx, ny; 1807 1808 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1809 1810 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1811 tty_margin_off(tty); 1812 1813 px = 0; 1814 nx = ctx->sx; 1815 py = ctx->ocy + 1; 1816 ny = ctx->sy - ctx->ocy - 1; 1817 1818 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1819 1820 px = ctx->ocx; 1821 nx = ctx->sx - ctx->ocx; 1822 py = ctx->ocy; 1823 1824 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1825 } 1826 1827 void 1828 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1829 { 1830 u_int px, py, nx, ny; 1831 1832 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1833 1834 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1835 tty_margin_off(tty); 1836 1837 px = 0; 1838 nx = ctx->sx; 1839 py = 0; 1840 ny = ctx->ocy; 1841 1842 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1843 1844 px = 0; 1845 nx = ctx->ocx + 1; 1846 py = ctx->ocy; 1847 1848 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1849 } 1850 1851 void 1852 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1853 { 1854 u_int px, py, nx, ny; 1855 1856 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1857 1858 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1859 tty_margin_off(tty); 1860 1861 px = 0; 1862 nx = ctx->sx; 1863 py = 0; 1864 ny = ctx->sy; 1865 1866 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1867 } 1868 1869 void 1870 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 1871 { 1872 u_int i, j; 1873 1874 if (ctx->bigger) { 1875 ctx->redraw_cb(ctx); 1876 return; 1877 } 1878 1879 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette); 1880 1881 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1882 tty_margin_off(tty); 1883 1884 for (j = 0; j < ctx->sy; j++) { 1885 tty_cursor_pane(tty, ctx, 0, j); 1886 for (i = 0; i < ctx->sx; i++) 1887 tty_putc(tty, 'E'); 1888 } 1889 } 1890 1891 void 1892 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 1893 { 1894 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1)) 1895 return; 1896 1897 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 1898 ctx->ocy == ctx->orlower && 1899 tty_full_width(tty, ctx)) 1900 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1901 1902 tty_margin_off(tty); 1903 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1904 1905 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette); 1906 } 1907 1908 void 1909 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 1910 { 1911 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 1912 return; 1913 1914 if (ctx->bigger && 1915 (ctx->xoff + ctx->ocx < ctx->wox || 1916 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 1917 if (!ctx->wrapped || 1918 !tty_full_width(tty, ctx) || 1919 (tty->term->flags & TERM_NOAM) || 1920 ctx->xoff + ctx->ocx != 0 || 1921 ctx->yoff + ctx->ocy != tty->cy + 1 || 1922 tty->cx < tty->sx || 1923 tty->cy == tty->rlower) 1924 tty_draw_pane(tty, ctx, ctx->ocy); 1925 else 1926 ctx->redraw_cb(ctx); 1927 return; 1928 } 1929 1930 tty_margin_off(tty); 1931 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1932 1933 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette); 1934 tty_putn(tty, ctx->ptr, ctx->num, ctx->num); 1935 } 1936 1937 void 1938 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 1939 { 1940 tty_set_selection(tty, ctx->ptr, ctx->num); 1941 } 1942 1943 void 1944 tty_set_selection(struct tty *tty, const char *buf, size_t len) 1945 { 1946 char *encoded; 1947 size_t size; 1948 1949 if (~tty->flags & TTY_STARTED) 1950 return; 1951 if (!tty_term_has(tty->term, TTYC_MS)) 1952 return; 1953 1954 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 1955 encoded = xmalloc(size); 1956 1957 b64_ntop(buf, len, encoded, size); 1958 tty_putcode_ptr2(tty, TTYC_MS, "", encoded); 1959 1960 free(encoded); 1961 } 1962 1963 void 1964 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 1965 { 1966 tty_add(tty, ctx->ptr, ctx->num); 1967 tty_invalidate(tty); 1968 } 1969 1970 void 1971 tty_cmd_syncstart(struct tty *tty, __unused const struct tty_ctx *ctx) 1972 { 1973 tty_sync_start(tty); 1974 } 1975 1976 void 1977 tty_cell(struct tty *tty, const struct grid_cell *gc, 1978 const struct grid_cell *defaults, int *palette) 1979 { 1980 const struct grid_cell *gcp; 1981 1982 /* Skip last character if terminal is stupid. */ 1983 if ((tty->term->flags & TERM_NOAM) && 1984 tty->cy == tty->sy - 1 && 1985 tty->cx == tty->sx - 1) 1986 return; 1987 1988 /* If this is a padding character, do nothing. */ 1989 if (gc->flags & GRID_FLAG_PADDING) 1990 return; 1991 1992 /* Check the output codeset and apply attributes. */ 1993 gcp = tty_check_codeset(tty, gc); 1994 tty_attributes(tty, gcp, defaults, palette); 1995 1996 /* If it is a single character, write with putc to handle ACS. */ 1997 if (gcp->data.size == 1) { 1998 tty_attributes(tty, gcp, defaults, palette); 1999 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2000 return; 2001 tty_putc(tty, *gcp->data.data); 2002 return; 2003 } 2004 2005 /* Write the data. */ 2006 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2007 } 2008 2009 void 2010 tty_reset(struct tty *tty) 2011 { 2012 struct grid_cell *gc = &tty->cell; 2013 2014 if (!grid_cells_equal(gc, &grid_default_cell)) { 2015 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2016 tty_putcode(tty, TTYC_RMACS); 2017 tty_putcode(tty, TTYC_SGR0); 2018 memcpy(gc, &grid_default_cell, sizeof *gc); 2019 } 2020 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2021 } 2022 2023 static void 2024 tty_invalidate(struct tty *tty) 2025 { 2026 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2027 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2028 2029 tty->cx = tty->cy = UINT_MAX; 2030 tty->rupper = tty->rleft = UINT_MAX; 2031 tty->rlower = tty->rright = UINT_MAX; 2032 2033 if (tty->flags & TTY_STARTED) { 2034 if (tty_use_margin(tty)) 2035 tty_putcode(tty, TTYC_ENMG); 2036 tty_putcode(tty, TTYC_SGR0); 2037 2038 tty->mode = ALL_MODES; 2039 tty_update_mode(tty, MODE_CURSOR, NULL); 2040 2041 tty_cursor(tty, 0, 0); 2042 tty_region_off(tty); 2043 tty_margin_off(tty); 2044 } else 2045 tty->mode = MODE_CURSOR; 2046 } 2047 2048 /* Turn off margin. */ 2049 void 2050 tty_region_off(struct tty *tty) 2051 { 2052 tty_region(tty, 0, tty->sy - 1); 2053 } 2054 2055 /* Set region inside pane. */ 2056 static void 2057 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2058 u_int rlower) 2059 { 2060 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2061 ctx->yoff + rlower - ctx->woy); 2062 } 2063 2064 /* Set region at absolute position. */ 2065 static void 2066 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2067 { 2068 if (tty->rlower == rlower && tty->rupper == rupper) 2069 return; 2070 if (!tty_term_has(tty->term, TTYC_CSR)) 2071 return; 2072 2073 tty->rupper = rupper; 2074 tty->rlower = rlower; 2075 2076 /* 2077 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2078 * 0,0 if it is beyond the last column (they do not reset their wrap 2079 * flag so further output causes a line feed). As a workaround, do an 2080 * explicit move to 0 first. 2081 */ 2082 if (tty->cx >= tty->sx) { 2083 if (tty->cy == UINT_MAX) 2084 tty_cursor(tty, 0, 0); 2085 else 2086 tty_cursor(tty, 0, tty->cy); 2087 } 2088 2089 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2090 tty->cx = tty->cy = UINT_MAX; 2091 } 2092 2093 /* Turn off margin. */ 2094 void 2095 tty_margin_off(struct tty *tty) 2096 { 2097 tty_margin(tty, 0, tty->sx - 1); 2098 } 2099 2100 /* Set margin inside pane. */ 2101 static void 2102 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2103 { 2104 tty_margin(tty, ctx->xoff - ctx->wox, 2105 ctx->xoff + ctx->sx - 1 - ctx->wox); 2106 } 2107 2108 /* Set margin at absolute position. */ 2109 static void 2110 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2111 { 2112 if (!tty_use_margin(tty)) 2113 return; 2114 if (tty->rleft == rleft && tty->rright == rright) 2115 return; 2116 2117 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2118 2119 tty->rleft = rleft; 2120 tty->rright = rright; 2121 2122 if (rleft == 0 && rright == tty->sx - 1) 2123 tty_putcode(tty, TTYC_CLMG); 2124 else 2125 tty_putcode2(tty, TTYC_CMG, rleft, rright); 2126 tty->cx = tty->cy = UINT_MAX; 2127 } 2128 2129 /* 2130 * Move the cursor, unless it would wrap itself when the next character is 2131 * printed. 2132 */ 2133 static void 2134 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2135 u_int cx, u_int cy) 2136 { 2137 if (!ctx->wrapped || 2138 !tty_full_width(tty, ctx) || 2139 (tty->term->flags & TERM_NOAM) || 2140 ctx->xoff + cx != 0 || 2141 ctx->yoff + cy != tty->cy + 1 || 2142 tty->cx < tty->sx || 2143 tty->cy == tty->rlower) 2144 tty_cursor_pane(tty, ctx, cx, cy); 2145 else 2146 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2147 } 2148 2149 /* Move cursor inside pane. */ 2150 static void 2151 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2152 { 2153 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2154 } 2155 2156 /* Move cursor to absolute position. */ 2157 void 2158 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2159 { 2160 struct tty_term *term = tty->term; 2161 u_int thisx, thisy; 2162 int change; 2163 2164 if (tty->flags & TTY_BLOCK) 2165 return; 2166 2167 if (cx > tty->sx - 1) 2168 cx = tty->sx - 1; 2169 2170 thisx = tty->cx; 2171 thisy = tty->cy; 2172 2173 /* No change. */ 2174 if (cx == thisx && cy == thisy) 2175 return; 2176 2177 /* Very end of the line, just use absolute movement. */ 2178 if (thisx > tty->sx - 1) 2179 goto absolute; 2180 2181 /* Move to home position (0, 0). */ 2182 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2183 tty_putcode(tty, TTYC_HOME); 2184 goto out; 2185 } 2186 2187 /* Zero on the next line. */ 2188 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2189 (!tty_use_margin(tty) || tty->rleft == 0)) { 2190 tty_putc(tty, '\r'); 2191 tty_putc(tty, '\n'); 2192 goto out; 2193 } 2194 2195 /* Moving column or row. */ 2196 if (cy == thisy) { 2197 /* 2198 * Moving column only, row staying the same. 2199 */ 2200 2201 /* To left edge. */ 2202 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2203 tty_putc(tty, '\r'); 2204 goto out; 2205 } 2206 2207 /* One to the left. */ 2208 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2209 tty_putcode(tty, TTYC_CUB1); 2210 goto out; 2211 } 2212 2213 /* One to the right. */ 2214 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2215 tty_putcode(tty, TTYC_CUF1); 2216 goto out; 2217 } 2218 2219 /* Calculate difference. */ 2220 change = thisx - cx; /* +ve left, -ve right */ 2221 2222 /* 2223 * Use HPA if change is larger than absolute, otherwise move 2224 * the cursor with CUB/CUF. 2225 */ 2226 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2227 tty_putcode1(tty, TTYC_HPA, cx); 2228 goto out; 2229 } else if (change > 0 && 2230 tty_term_has(term, TTYC_CUB) && 2231 !tty_use_margin(tty)) { 2232 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2233 tty_putcode(tty, TTYC_CUB1); 2234 tty_putcode(tty, TTYC_CUB1); 2235 goto out; 2236 } 2237 tty_putcode1(tty, TTYC_CUB, change); 2238 goto out; 2239 } else if (change < 0 && 2240 tty_term_has(term, TTYC_CUF) && 2241 !tty_use_margin(tty)) { 2242 tty_putcode1(tty, TTYC_CUF, -change); 2243 goto out; 2244 } 2245 } else if (cx == thisx) { 2246 /* 2247 * Moving row only, column staying the same. 2248 */ 2249 2250 /* One above. */ 2251 if (thisy != tty->rupper && 2252 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2253 tty_putcode(tty, TTYC_CUU1); 2254 goto out; 2255 } 2256 2257 /* One below. */ 2258 if (thisy != tty->rlower && 2259 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2260 tty_putcode(tty, TTYC_CUD1); 2261 goto out; 2262 } 2263 2264 /* Calculate difference. */ 2265 change = thisy - cy; /* +ve up, -ve down */ 2266 2267 /* 2268 * Try to use VPA if change is larger than absolute or if this 2269 * change would cross the scroll region, otherwise use CUU/CUD. 2270 */ 2271 if ((u_int) abs(change) > cy || 2272 (change < 0 && cy - change > tty->rlower) || 2273 (change > 0 && cy - change < tty->rupper)) { 2274 if (tty_term_has(term, TTYC_VPA)) { 2275 tty_putcode1(tty, TTYC_VPA, cy); 2276 goto out; 2277 } 2278 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2279 tty_putcode1(tty, TTYC_CUU, change); 2280 goto out; 2281 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2282 tty_putcode1(tty, TTYC_CUD, -change); 2283 goto out; 2284 } 2285 } 2286 2287 absolute: 2288 /* Absolute movement. */ 2289 tty_putcode2(tty, TTYC_CUP, cy, cx); 2290 2291 out: 2292 tty->cx = cx; 2293 tty->cy = cy; 2294 } 2295 2296 void 2297 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2298 const struct grid_cell *defaults, int *palette) 2299 { 2300 struct grid_cell *tc = &tty->cell, gc2; 2301 int changed; 2302 2303 /* Copy cell and update default colours. */ 2304 memcpy(&gc2, gc, sizeof gc2); 2305 if (gc2.fg == 8) 2306 gc2.fg = defaults->fg; 2307 if (gc2.bg == 8) 2308 gc2.bg = defaults->bg; 2309 2310 /* Ignore cell if it is the same as the last one. */ 2311 if (gc2.attr == tty->last_cell.attr && 2312 gc2.fg == tty->last_cell.fg && 2313 gc2.bg == tty->last_cell.bg && 2314 gc2.us == tty->last_cell.us) 2315 return; 2316 2317 /* 2318 * If no setab, try to use the reverse attribute as a best-effort for a 2319 * non-default background. This is a bit of a hack but it doesn't do 2320 * any serious harm and makes a couple of applications happier. 2321 */ 2322 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2323 if (gc2.attr & GRID_ATTR_REVERSE) { 2324 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2325 gc2.attr &= ~GRID_ATTR_REVERSE; 2326 } else { 2327 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2328 gc2.attr |= GRID_ATTR_REVERSE; 2329 } 2330 } 2331 2332 /* Fix up the colours if necessary. */ 2333 tty_check_fg(tty, palette, &gc2); 2334 tty_check_bg(tty, palette, &gc2); 2335 tty_check_us(tty, palette, &gc2); 2336 2337 /* 2338 * If any bits are being cleared or the underline colour is now default, 2339 * reset everything. 2340 */ 2341 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2342 tty_reset(tty); 2343 2344 /* 2345 * Set the colours. This may call tty_reset() (so it comes next) and 2346 * may add to (NOT remove) the desired attributes. 2347 */ 2348 tty_colours(tty, &gc2); 2349 2350 /* Filter out attribute bits already set. */ 2351 changed = gc2.attr & ~tc->attr; 2352 tc->attr = gc2.attr; 2353 2354 /* Set the attributes. */ 2355 if (changed & GRID_ATTR_BRIGHT) 2356 tty_putcode(tty, TTYC_BOLD); 2357 if (changed & GRID_ATTR_DIM) 2358 tty_putcode(tty, TTYC_DIM); 2359 if (changed & GRID_ATTR_ITALICS) 2360 tty_set_italics(tty); 2361 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2362 if ((changed & GRID_ATTR_UNDERSCORE) || 2363 !tty_term_has(tty->term, TTYC_SMULX)) 2364 tty_putcode(tty, TTYC_SMUL); 2365 else if (changed & GRID_ATTR_UNDERSCORE_2) 2366 tty_putcode1(tty, TTYC_SMULX, 2); 2367 else if (changed & GRID_ATTR_UNDERSCORE_3) 2368 tty_putcode1(tty, TTYC_SMULX, 3); 2369 else if (changed & GRID_ATTR_UNDERSCORE_4) 2370 tty_putcode1(tty, TTYC_SMULX, 4); 2371 else if (changed & GRID_ATTR_UNDERSCORE_5) 2372 tty_putcode1(tty, TTYC_SMULX, 5); 2373 } 2374 if (changed & GRID_ATTR_BLINK) 2375 tty_putcode(tty, TTYC_BLINK); 2376 if (changed & GRID_ATTR_REVERSE) { 2377 if (tty_term_has(tty->term, TTYC_REV)) 2378 tty_putcode(tty, TTYC_REV); 2379 else if (tty_term_has(tty->term, TTYC_SMSO)) 2380 tty_putcode(tty, TTYC_SMSO); 2381 } 2382 if (changed & GRID_ATTR_HIDDEN) 2383 tty_putcode(tty, TTYC_INVIS); 2384 if (changed & GRID_ATTR_STRIKETHROUGH) 2385 tty_putcode(tty, TTYC_SMXX); 2386 if (changed & GRID_ATTR_OVERLINE) 2387 tty_putcode(tty, TTYC_SMOL); 2388 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2389 tty_putcode(tty, TTYC_SMACS); 2390 2391 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2392 } 2393 2394 static void 2395 tty_colours(struct tty *tty, const struct grid_cell *gc) 2396 { 2397 struct grid_cell *tc = &tty->cell; 2398 int have_ax; 2399 2400 /* No changes? Nothing is necessary. */ 2401 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2402 return; 2403 2404 /* 2405 * Is either the default colour? This is handled specially because the 2406 * best solution might be to reset both colours to default, in which 2407 * case if only one is default need to fall onward to set the other 2408 * colour. 2409 */ 2410 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2411 /* 2412 * If don't have AX but do have op, send sgr0 (op can't 2413 * actually be used because it is sometimes the same as sgr0 2414 * and sometimes isn't). This resets both colours to default. 2415 * 2416 * Otherwise, try to set the default colour only as needed. 2417 */ 2418 have_ax = tty_term_flag(tty->term, TTYC_AX); 2419 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2420 tty_reset(tty); 2421 else { 2422 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2423 if (have_ax) 2424 tty_puts(tty, "\033[39m"); 2425 else if (tc->fg != 7) 2426 tty_putcode1(tty, TTYC_SETAF, 7); 2427 tc->fg = gc->fg; 2428 } 2429 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2430 if (have_ax) 2431 tty_puts(tty, "\033[49m"); 2432 else if (tc->bg != 0) 2433 tty_putcode1(tty, TTYC_SETAB, 0); 2434 tc->bg = gc->bg; 2435 } 2436 } 2437 } 2438 2439 /* Set the foreground colour. */ 2440 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2441 tty_colours_fg(tty, gc); 2442 2443 /* 2444 * Set the background colour. This must come after the foreground as 2445 * tty_colour_fg() can call tty_reset(). 2446 */ 2447 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2448 tty_colours_bg(tty, gc); 2449 2450 /* Set the underscore color. */ 2451 if (gc->us != tc->us) 2452 tty_colours_us(tty, gc); 2453 } 2454 2455 static void 2456 tty_check_fg(struct tty *tty, int *palette, struct grid_cell *gc) 2457 { 2458 u_char r, g, b; 2459 u_int colours; 2460 int c; 2461 2462 /* 2463 * Perform substitution if this pane has a palette. If the bright 2464 * attribute is set, use the bright entry in the palette by changing to 2465 * the aixterm colour. 2466 */ 2467 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2468 c = gc->fg; 2469 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT) 2470 c += 90; 2471 if ((c = tty_get_palette(palette, c)) != -1) 2472 gc->fg = c; 2473 } 2474 2475 /* Is this a 24-bit colour? */ 2476 if (gc->fg & COLOUR_FLAG_RGB) { 2477 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2478 if (tty->term->flags & TERM_RGBCOLOURS) 2479 return; 2480 colour_split_rgb(gc->fg, &r, &g, &b); 2481 gc->fg = colour_find_rgb(r, g, b); 2482 } 2483 2484 /* How many colours does this terminal have? */ 2485 if (tty->term->flags & TERM_256COLOURS) 2486 colours = 256; 2487 else 2488 colours = tty_term_number(tty->term, TTYC_COLORS); 2489 2490 /* Is this a 256-colour colour? */ 2491 if (gc->fg & COLOUR_FLAG_256) { 2492 /* And not a 256 colour mode? */ 2493 if (colours < 256) { 2494 gc->fg = colour_256to16(gc->fg); 2495 if (gc->fg & 8) { 2496 gc->fg &= 7; 2497 if (colours >= 16) 2498 gc->fg += 90; 2499 } 2500 } 2501 return; 2502 } 2503 2504 /* Is this an aixterm colour? */ 2505 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2506 gc->fg -= 90; 2507 gc->attr |= GRID_ATTR_BRIGHT; 2508 } 2509 } 2510 2511 static void 2512 tty_check_bg(struct tty *tty, int *palette, struct grid_cell *gc) 2513 { 2514 u_char r, g, b; 2515 u_int colours; 2516 int c; 2517 2518 /* Perform substitution if this pane has a palette. */ 2519 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2520 if ((c = tty_get_palette(palette, gc->bg)) != -1) 2521 gc->bg = c; 2522 } 2523 2524 /* Is this a 24-bit colour? */ 2525 if (gc->bg & COLOUR_FLAG_RGB) { 2526 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2527 if (tty->term->flags & TERM_RGBCOLOURS) 2528 return; 2529 colour_split_rgb(gc->bg, &r, &g, &b); 2530 gc->bg = colour_find_rgb(r, g, b); 2531 } 2532 2533 /* How many colours does this terminal have? */ 2534 if (tty->term->flags & TERM_256COLOURS) 2535 colours = 256; 2536 else 2537 colours = tty_term_number(tty->term, TTYC_COLORS); 2538 2539 /* Is this a 256-colour colour? */ 2540 if (gc->bg & COLOUR_FLAG_256) { 2541 /* 2542 * And not a 256 colour mode? Translate to 16-colour 2543 * palette. Bold background doesn't exist portably, so just 2544 * discard the bold bit if set. 2545 */ 2546 if (colours < 256) { 2547 gc->bg = colour_256to16(gc->bg); 2548 if (gc->bg & 8) { 2549 gc->bg &= 7; 2550 if (colours >= 16) 2551 gc->bg += 90; 2552 } 2553 } 2554 return; 2555 } 2556 2557 /* Is this an aixterm colour? */ 2558 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2559 gc->bg -= 90; 2560 } 2561 2562 static void 2563 tty_check_us(__unused struct tty *tty, int *palette, struct grid_cell *gc) 2564 { 2565 int c; 2566 2567 /* Perform substitution if this pane has a palette. */ 2568 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2569 if ((c = tty_get_palette(palette, gc->us)) != -1) 2570 gc->us = c; 2571 } 2572 2573 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2574 if (gc->us & COLOUR_FLAG_256) 2575 gc->us = colour_256toRGB (gc->us); 2576 } 2577 2578 static void 2579 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2580 { 2581 struct grid_cell *tc = &tty->cell; 2582 char s[32]; 2583 2584 /* Is this a 24-bit or 256-colour colour? */ 2585 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2586 if (tty_try_colour(tty, gc->fg, "38") == 0) 2587 goto save; 2588 /* Should not get here, already converted in tty_check_fg. */ 2589 return; 2590 } 2591 2592 /* Is this an aixterm bright colour? */ 2593 if (gc->fg >= 90 && gc->fg <= 97) { 2594 if (tty->term->flags & TERM_256COLOURS) { 2595 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2596 tty_puts(tty, s); 2597 } else 2598 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8); 2599 goto save; 2600 } 2601 2602 /* Otherwise set the foreground colour. */ 2603 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2604 2605 save: 2606 /* Save the new values in the terminal current cell. */ 2607 tc->fg = gc->fg; 2608 } 2609 2610 static void 2611 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2612 { 2613 struct grid_cell *tc = &tty->cell; 2614 char s[32]; 2615 2616 /* Is this a 24-bit or 256-colour colour? */ 2617 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2618 if (tty_try_colour(tty, gc->bg, "48") == 0) 2619 goto save; 2620 /* Should not get here, already converted in tty_check_bg. */ 2621 return; 2622 } 2623 2624 /* Is this an aixterm bright colour? */ 2625 if (gc->bg >= 90 && gc->bg <= 97) { 2626 if (tty->term->flags & TERM_256COLOURS) { 2627 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2628 tty_puts(tty, s); 2629 } else 2630 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8); 2631 goto save; 2632 } 2633 2634 /* Otherwise set the background colour. */ 2635 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2636 2637 save: 2638 /* Save the new values in the terminal current cell. */ 2639 tc->bg = gc->bg; 2640 } 2641 2642 static void 2643 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2644 { 2645 struct grid_cell *tc = &tty->cell; 2646 u_int c; 2647 u_char r, g, b; 2648 2649 /* Clear underline colour. */ 2650 if (gc->us == 0) { 2651 tty_putcode(tty, TTYC_OL); 2652 goto save; 2653 } 2654 2655 /* Must be an RGB colour - this should never happen. */ 2656 if (~gc->us & COLOUR_FLAG_RGB) 2657 return; 2658 2659 /* 2660 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2661 * capability format. Calculate the colour value. 2662 */ 2663 colour_split_rgb(gc->us, &r, &g, &b); 2664 c = (65536 * r) + (256 * g) + b; 2665 2666 /* 2667 * Write the colour. Only use setal if the RGB flag is set because the 2668 * non-RGB version may be wrong. 2669 */ 2670 if (tty_term_has(tty->term, TTYC_SETULC)) 2671 tty_putcode1(tty, TTYC_SETULC, c); 2672 else if (tty_term_has(tty->term, TTYC_SETAL) && 2673 tty_term_has(tty->term, TTYC_RGB)) 2674 tty_putcode1(tty, TTYC_SETAL, c); 2675 2676 save: 2677 /* Save the new values in the terminal current cell. */ 2678 tc->us = gc->us; 2679 } 2680 2681 static int 2682 tty_try_colour(struct tty *tty, int colour, const char *type) 2683 { 2684 u_char r, g, b; 2685 2686 if (colour & COLOUR_FLAG_256) { 2687 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2688 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2689 else if (tty_term_has(tty->term, TTYC_SETAB)) 2690 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2691 return (0); 2692 } 2693 2694 if (colour & COLOUR_FLAG_RGB) { 2695 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2696 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2697 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2698 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2699 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2700 return (0); 2701 } 2702 2703 return (-1); 2704 } 2705 2706 static void 2707 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2708 { 2709 memcpy(gc, &grid_default_cell, sizeof *gc); 2710 gc->fg = wp->fg; 2711 gc->bg = wp->bg; 2712 } 2713 2714 void 2715 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2716 { 2717 struct options *oo = wp->options; 2718 2719 memcpy(gc, &grid_default_cell, sizeof *gc); 2720 2721 if (wp->flags & PANE_STYLECHANGED) { 2722 wp->flags &= ~PANE_STYLECHANGED; 2723 2724 tty_window_default_style(&wp->cached_active_gc, wp); 2725 style_add(&wp->cached_active_gc, oo, "window-active-style", 2726 NULL); 2727 tty_window_default_style(&wp->cached_gc, wp); 2728 style_add(&wp->cached_gc, oo, "window-style", NULL); 2729 } 2730 2731 if (gc->fg == 8) { 2732 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2733 gc->fg = wp->cached_active_gc.fg; 2734 else 2735 gc->fg = wp->cached_gc.fg; 2736 } 2737 2738 if (gc->bg == 8) { 2739 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2740 gc->bg = wp->cached_active_gc.bg; 2741 else 2742 gc->bg = wp->cached_gc.bg; 2743 } 2744 } 2745 2746 static void 2747 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2748 int *palette, u_int bg) 2749 { 2750 struct grid_cell gc; 2751 2752 memcpy(&gc, &grid_default_cell, sizeof gc); 2753 gc.bg = bg; 2754 tty_attributes(tty, &gc, defaults, palette); 2755 } 2756