1 /* $OpenBSD: tty.c,v 1.441 2025/01/12 14:20:49 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 <time.h> 32 #include <unistd.h> 33 34 #include "tmux.h" 35 36 static int tty_log_fd = -1; 37 38 static void tty_set_italics(struct tty *); 39 static int tty_try_colour(struct tty *, int, const char *); 40 static void tty_force_cursor_colour(struct tty *, int); 41 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int, 42 u_int); 43 static void tty_cursor_pane_unless_wrap(struct tty *, 44 const struct tty_ctx *, u_int, u_int); 45 static void tty_colours(struct tty *, const struct grid_cell *); 46 static void tty_check_fg(struct tty *, struct colour_palette *, 47 struct grid_cell *); 48 static void tty_check_bg(struct tty *, struct colour_palette *, 49 struct grid_cell *); 50 static void tty_check_us(struct tty *, struct colour_palette *, 51 struct grid_cell *); 52 static void tty_colours_fg(struct tty *, const struct grid_cell *); 53 static void tty_colours_bg(struct tty *, const struct grid_cell *); 54 static void tty_colours_us(struct tty *, const struct grid_cell *); 55 56 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int, 57 u_int); 58 static void tty_region(struct tty *, u_int, u_int); 59 static void tty_margin_pane(struct tty *, const struct tty_ctx *); 60 static void tty_margin(struct tty *, u_int, u_int); 61 static int tty_large_region(struct tty *, const struct tty_ctx *); 62 static int tty_fake_bce(const struct tty *, const struct grid_cell *, 63 u_int); 64 static void tty_redraw_region(struct tty *, const struct tty_ctx *); 65 static void tty_emulate_repeat(struct tty *, enum tty_code_code, 66 enum tty_code_code, u_int); 67 static void tty_repeat_space(struct tty *, u_int); 68 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int); 69 static void tty_default_attributes(struct tty *, const struct grid_cell *, 70 struct colour_palette *, u_int, struct hyperlinks *); 71 static int tty_check_overlay(struct tty *, u_int, u_int); 72 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int, 73 struct overlay_ranges *); 74 75 #define tty_use_margin(tty) \ 76 (tty->term->flags & TERM_DECSLRM) 77 #define tty_full_width(tty, ctx) \ 78 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx) 79 80 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */) 81 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8) 82 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8) 83 84 #define TTY_QUERY_TIMEOUT 5 85 #define TTY_REQUEST_LIMIT 30 86 87 void 88 tty_create_log(void) 89 { 90 char name[64]; 91 92 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid()); 93 94 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644); 95 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1) 96 fatal("fcntl failed"); 97 } 98 99 int 100 tty_init(struct tty *tty, struct client *c) 101 { 102 if (!isatty(c->fd)) 103 return (-1); 104 105 memset(tty, 0, sizeof *tty); 106 tty->client = c; 107 108 tty->cstyle = SCREEN_CURSOR_DEFAULT; 109 tty->ccolour = -1; 110 tty->fg = tty->bg = -1; 111 112 if (tcgetattr(c->fd, &tty->tio) != 0) 113 return (-1); 114 return (0); 115 } 116 117 void 118 tty_resize(struct tty *tty) 119 { 120 struct client *c = tty->client; 121 struct winsize ws; 122 u_int sx, sy, xpixel, ypixel; 123 124 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) { 125 sx = ws.ws_col; 126 if (sx == 0) { 127 sx = 80; 128 xpixel = 0; 129 } else 130 xpixel = ws.ws_xpixel / sx; 131 sy = ws.ws_row; 132 if (sy == 0) { 133 sy = 24; 134 ypixel = 0; 135 } else 136 ypixel = ws.ws_ypixel / sy; 137 138 if ((xpixel == 0 || ypixel == 0) && 139 tty->out != NULL && 140 !(tty->flags & TTY_WINSIZEQUERY) && 141 (tty->term->flags & TERM_VT100LIKE)) { 142 tty_puts(tty, "\033[18t\033[14t"); 143 tty->flags |= TTY_WINSIZEQUERY; 144 } 145 } else { 146 sx = 80; 147 sy = 24; 148 xpixel = 0; 149 ypixel = 0; 150 } 151 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy, 152 xpixel, ypixel); 153 tty_set_size(tty, sx, sy, xpixel, ypixel); 154 tty_invalidate(tty); 155 } 156 157 void 158 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel) 159 { 160 tty->sx = sx; 161 tty->sy = sy; 162 tty->xpixel = xpixel; 163 tty->ypixel = ypixel; 164 } 165 166 static void 167 tty_read_callback(__unused int fd, __unused short events, void *data) 168 { 169 struct tty *tty = data; 170 struct client *c = tty->client; 171 const char *name = c->name; 172 size_t size = EVBUFFER_LENGTH(tty->in); 173 int nread; 174 175 nread = evbuffer_read(tty->in, c->fd, -1); 176 if (nread == 0 || nread == -1) { 177 if (nread == 0) 178 log_debug("%s: read closed", name); 179 else 180 log_debug("%s: read error: %s", name, strerror(errno)); 181 event_del(&tty->event_in); 182 server_client_lost(tty->client); 183 return; 184 } 185 log_debug("%s: read %d bytes (already %zu)", name, nread, size); 186 187 while (tty_keys_next(tty)) 188 ; 189 } 190 191 static void 192 tty_timer_callback(__unused int fd, __unused short events, void *data) 193 { 194 struct tty *tty = data; 195 struct client *c = tty->client; 196 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 197 198 log_debug("%s: %zu discarded", c->name, tty->discarded); 199 200 c->flags |= CLIENT_ALLREDRAWFLAGS; 201 c->discarded += tty->discarded; 202 203 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 204 tty->flags &= ~TTY_BLOCK; 205 tty_invalidate(tty); 206 return; 207 } 208 tty->discarded = 0; 209 evtimer_add(&tty->timer, &tv); 210 } 211 212 static int 213 tty_block_maybe(struct tty *tty) 214 { 215 struct client *c = tty->client; 216 size_t size = EVBUFFER_LENGTH(tty->out); 217 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 218 219 if (size == 0) 220 tty->flags &= ~TTY_NOBLOCK; 221 else if (tty->flags & TTY_NOBLOCK) 222 return (0); 223 224 if (size < TTY_BLOCK_START(tty)) 225 return (0); 226 227 if (tty->flags & TTY_BLOCK) 228 return (1); 229 tty->flags |= TTY_BLOCK; 230 231 log_debug("%s: can't keep up, %zu discarded", c->name, size); 232 233 evbuffer_drain(tty->out, size); 234 c->discarded += size; 235 236 tty->discarded = 0; 237 evtimer_add(&tty->timer, &tv); 238 return (1); 239 } 240 241 static void 242 tty_write_callback(__unused int fd, __unused short events, void *data) 243 { 244 struct tty *tty = data; 245 struct client *c = tty->client; 246 size_t size = EVBUFFER_LENGTH(tty->out); 247 int nwrite; 248 249 nwrite = evbuffer_write(tty->out, c->fd); 250 if (nwrite == -1) 251 return; 252 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 253 254 if (c->redraw > 0) { 255 if ((size_t)nwrite >= c->redraw) 256 c->redraw = 0; 257 else 258 c->redraw -= nwrite; 259 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 260 c->redraw); 261 } else if (tty_block_maybe(tty)) 262 return; 263 264 if (EVBUFFER_LENGTH(tty->out) != 0) 265 event_add(&tty->event_out, NULL); 266 } 267 268 int 269 tty_open(struct tty *tty, char **cause) 270 { 271 struct client *c = tty->client; 272 273 tty->term = tty_term_create(tty, c->term_name, c->term_caps, 274 c->term_ncaps, &c->term_features, cause); 275 if (tty->term == NULL) { 276 tty_close(tty); 277 return (-1); 278 } 279 tty->flags |= TTY_OPENED; 280 281 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 282 283 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ, 284 tty_read_callback, tty); 285 tty->in = evbuffer_new(); 286 if (tty->in == NULL) 287 fatal("out of memory"); 288 289 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty); 290 tty->out = evbuffer_new(); 291 if (tty->out == NULL) 292 fatal("out of memory"); 293 294 evtimer_set(&tty->timer, tty_timer_callback, tty); 295 296 tty_start_tty(tty); 297 tty_keys_build(tty); 298 299 return (0); 300 } 301 302 static void 303 tty_start_timer_callback(__unused int fd, __unused short events, void *data) 304 { 305 struct tty *tty = data; 306 struct client *c = tty->client; 307 308 log_debug("%s: start timer fired", c->name); 309 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0) 310 tty_update_features(tty); 311 tty->flags |= TTY_ALL_REQUEST_FLAGS; 312 } 313 314 void 315 tty_start_tty(struct tty *tty) 316 { 317 struct client *c = tty->client; 318 struct termios tio; 319 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 320 321 setblocking(c->fd, 0); 322 event_add(&tty->event_in, NULL); 323 324 memcpy(&tio, &tty->tio, sizeof tio); 325 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 326 tio.c_iflag |= IGNBRK; 327 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 328 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT| 329 ECHOKE|ISIG); 330 tio.c_cc[VMIN] = 1; 331 tio.c_cc[VTIME] = 0; 332 if (tcsetattr(c->fd, TCSANOW, &tio) == 0) 333 tcflush(c->fd, TCOFLUSH); 334 335 tty_putcode(tty, TTYC_SMCUP); 336 337 tty_putcode(tty, TTYC_SMKX); 338 tty_putcode(tty, TTYC_CLEAR); 339 340 if (tty_acs_needed(tty)) { 341 log_debug("%s: using capabilities for ACS", c->name); 342 tty_putcode(tty, TTYC_ENACS); 343 } else 344 log_debug("%s: using UTF-8 for ACS", c->name); 345 346 tty_putcode(tty, TTYC_CNORM); 347 if (tty_term_has(tty->term, TTYC_KMOUS)) { 348 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l"); 349 tty_puts(tty, "\033[?1006l\033[?1005l"); 350 } 351 if (tty_term_has(tty->term, TTYC_ENBP)) 352 tty_putcode(tty, TTYC_ENBP); 353 354 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 355 evtimer_add(&tty->start_timer, &tv); 356 357 tty->flags |= TTY_STARTED; 358 tty_invalidate(tty); 359 360 if (tty->ccolour != -1) 361 tty_force_cursor_colour(tty, -1); 362 363 tty->mouse_drag_flag = 0; 364 tty->mouse_drag_update = NULL; 365 tty->mouse_drag_release = NULL; 366 } 367 368 void 369 tty_send_requests(struct tty *tty) 370 { 371 if (~tty->flags & TTY_STARTED) 372 return; 373 374 if (tty->term->flags & TERM_VT100LIKE) { 375 if (~tty->term->flags & TTY_HAVEDA) 376 tty_puts(tty, "\033[c"); 377 if (~tty->flags & TTY_HAVEDA2) 378 tty_puts(tty, "\033[>c"); 379 if (~tty->flags & TTY_HAVEXDA) 380 tty_puts(tty, "\033[>q"); 381 tty_puts(tty, "\033]10;?\033\\"); 382 tty_puts(tty, "\033]11;?\033\\"); 383 } else 384 tty->flags |= TTY_ALL_REQUEST_FLAGS; 385 tty->last_requests = time(NULL); 386 } 387 388 void 389 tty_repeat_requests(struct tty *tty) 390 { 391 time_t t = time(NULL); 392 393 if (~tty->flags & TTY_STARTED) 394 return; 395 396 if (t - tty->last_requests <= TTY_REQUEST_LIMIT) 397 return; 398 tty->last_requests = t; 399 400 if (tty->term->flags & TERM_VT100LIKE) { 401 tty_puts(tty, "\033]10;?\033\\"); 402 tty_puts(tty, "\033]11;?\033\\"); 403 } 404 } 405 406 void 407 tty_stop_tty(struct tty *tty) 408 { 409 struct client *c = tty->client; 410 struct winsize ws; 411 412 if (!(tty->flags & TTY_STARTED)) 413 return; 414 tty->flags &= ~TTY_STARTED; 415 416 evtimer_del(&tty->start_timer); 417 418 event_del(&tty->timer); 419 tty->flags &= ~TTY_BLOCK; 420 421 event_del(&tty->event_in); 422 event_del(&tty->event_out); 423 424 /* 425 * Be flexible about error handling and try not kill the server just 426 * because the fd is invalid. Things like ssh -t can easily leave us 427 * with a dead tty. 428 */ 429 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 430 return; 431 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 432 return; 433 434 tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 435 if (tty_acs_needed(tty)) 436 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 437 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 438 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 439 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 440 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 441 if (tty_term_has(tty->term, TTYC_SE)) 442 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 443 else if (tty_term_has(tty->term, TTYC_SS)) 444 tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0)); 445 } 446 if (tty->ccolour != -1) 447 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 448 449 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 450 if (tty_term_has(tty->term, TTYC_KMOUS)) { 451 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 452 tty_raw(tty, "\033[?1006l\033[?1005l"); 453 } 454 if (tty_term_has(tty->term, TTYC_DSBP)) 455 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 456 457 if (tty->term->flags & TERM_VT100LIKE) 458 tty_raw(tty, "\033[?7727l"); 459 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 460 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 461 462 if (tty_use_margin(tty)) 463 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 464 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 465 466 setblocking(c->fd, 1); 467 } 468 469 void 470 tty_close(struct tty *tty) 471 { 472 if (event_initialized(&tty->key_timer)) 473 evtimer_del(&tty->key_timer); 474 tty_stop_tty(tty); 475 476 if (tty->flags & TTY_OPENED) { 477 evbuffer_free(tty->in); 478 event_del(&tty->event_in); 479 evbuffer_free(tty->out); 480 event_del(&tty->event_out); 481 482 tty_term_free(tty->term); 483 tty_keys_free(tty); 484 485 tty->flags &= ~TTY_OPENED; 486 } 487 } 488 489 void 490 tty_free(struct tty *tty) 491 { 492 tty_close(tty); 493 } 494 495 void 496 tty_update_features(struct tty *tty) 497 { 498 struct client *c = tty->client; 499 500 if (tty_apply_features(tty->term, c->term_features)) 501 tty_term_apply_overrides(tty->term); 502 503 if (tty_use_margin(tty)) 504 tty_putcode(tty, TTYC_ENMG); 505 if (options_get_number(global_options, "extended-keys")) 506 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 507 if (options_get_number(global_options, "focus-events")) 508 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 509 if (tty->term->flags & TERM_VT100LIKE) 510 tty_puts(tty, "\033[?7727h"); 511 512 /* 513 * Features might have changed since the first draw during attach. For 514 * example, this happens when DA responses are received. 515 */ 516 server_redraw_client(c); 517 518 tty_invalidate(tty); 519 } 520 521 void 522 tty_raw(struct tty *tty, const char *s) 523 { 524 struct client *c = tty->client; 525 ssize_t n, slen; 526 u_int i; 527 528 slen = strlen(s); 529 for (i = 0; i < 5; i++) { 530 n = write(c->fd, s, slen); 531 if (n >= 0) { 532 s += n; 533 slen -= n; 534 if (slen == 0) 535 break; 536 } else if (n == -1 && errno != EAGAIN) 537 break; 538 usleep(100); 539 } 540 } 541 542 void 543 tty_putcode(struct tty *tty, enum tty_code_code code) 544 { 545 tty_puts(tty, tty_term_string(tty->term, code)); 546 } 547 548 void 549 tty_putcode_i(struct tty *tty, enum tty_code_code code, int a) 550 { 551 if (a < 0) 552 return; 553 tty_puts(tty, tty_term_string_i(tty->term, code, a)); 554 } 555 556 void 557 tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b) 558 { 559 if (a < 0 || b < 0) 560 return; 561 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b)); 562 } 563 564 void 565 tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c) 566 { 567 if (a < 0 || b < 0 || c < 0) 568 return; 569 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c)); 570 } 571 572 void 573 tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a) 574 { 575 if (a != NULL) 576 tty_puts(tty, tty_term_string_s(tty->term, code, a)); 577 } 578 579 void 580 tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a, 581 const char *b) 582 { 583 if (a != NULL && b != NULL) 584 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b)); 585 } 586 587 static void 588 tty_add(struct tty *tty, const char *buf, size_t len) 589 { 590 struct client *c = tty->client; 591 592 if (tty->flags & TTY_BLOCK) { 593 tty->discarded += len; 594 return; 595 } 596 597 evbuffer_add(tty->out, buf, len); 598 log_debug("%s: %.*s", c->name, (int)len, buf); 599 c->written += len; 600 601 if (tty_log_fd != -1) 602 write(tty_log_fd, buf, len); 603 if (tty->flags & TTY_STARTED) 604 event_add(&tty->event_out, NULL); 605 } 606 607 void 608 tty_puts(struct tty *tty, const char *s) 609 { 610 if (*s != '\0') 611 tty_add(tty, s, strlen(s)); 612 } 613 614 void 615 tty_putc(struct tty *tty, u_char ch) 616 { 617 const char *acs; 618 619 if ((tty->term->flags & TERM_NOAM) && 620 ch >= 0x20 && ch != 0x7f && 621 tty->cy == tty->sy - 1 && 622 tty->cx + 1 >= tty->sx) 623 return; 624 625 if (tty->cell.attr & GRID_ATTR_CHARSET) { 626 acs = tty_acs_get(tty, ch); 627 if (acs != NULL) 628 tty_add(tty, acs, strlen(acs)); 629 else 630 tty_add(tty, &ch, 1); 631 } else 632 tty_add(tty, &ch, 1); 633 634 if (ch >= 0x20 && ch != 0x7f) { 635 if (tty->cx >= tty->sx) { 636 tty->cx = 1; 637 if (tty->cy != tty->rlower) 638 tty->cy++; 639 640 /* 641 * On !am terminals, force the cursor position to where 642 * we think it should be after a line wrap - this means 643 * it works on sensible terminals as well. 644 */ 645 if (tty->term->flags & TERM_NOAM) 646 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx); 647 } else 648 tty->cx++; 649 } 650 } 651 652 void 653 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 654 { 655 if ((tty->term->flags & TERM_NOAM) && 656 tty->cy == tty->sy - 1 && 657 tty->cx + len >= tty->sx) 658 len = tty->sx - tty->cx - 1; 659 660 tty_add(tty, buf, len); 661 if (tty->cx + width > tty->sx) { 662 tty->cx = (tty->cx + width) - tty->sx; 663 if (tty->cx <= tty->sx) 664 tty->cy++; 665 else 666 tty->cx = tty->cy = UINT_MAX; 667 } else 668 tty->cx += width; 669 } 670 671 static void 672 tty_set_italics(struct tty *tty) 673 { 674 const char *s; 675 676 if (tty_term_has(tty->term, TTYC_SITM)) { 677 s = options_get_string(global_options, "default-terminal"); 678 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 679 tty_putcode(tty, TTYC_SITM); 680 return; 681 } 682 } 683 tty_putcode(tty, TTYC_SMSO); 684 } 685 686 void 687 tty_set_title(struct tty *tty, const char *title) 688 { 689 if (!tty_term_has(tty->term, TTYC_TSL) || 690 !tty_term_has(tty->term, TTYC_FSL)) 691 return; 692 693 tty_putcode(tty, TTYC_TSL); 694 tty_puts(tty, title); 695 tty_putcode(tty, TTYC_FSL); 696 } 697 698 void 699 tty_set_path(struct tty *tty, const char *title) 700 { 701 if (!tty_term_has(tty->term, TTYC_SWD) || 702 !tty_term_has(tty->term, TTYC_FSL)) 703 return; 704 705 tty_putcode(tty, TTYC_SWD); 706 tty_puts(tty, title); 707 tty_putcode(tty, TTYC_FSL); 708 } 709 710 static void 711 tty_force_cursor_colour(struct tty *tty, int c) 712 { 713 u_char r, g, b; 714 char s[13]; 715 716 if (c != -1) 717 c = colour_force_rgb(c); 718 if (c == tty->ccolour) 719 return; 720 if (c == -1) 721 tty_putcode(tty, TTYC_CR); 722 else { 723 colour_split_rgb(c, &r, &g, &b); 724 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b); 725 tty_putcode_s(tty, TTYC_CS, s); 726 } 727 tty->ccolour = c; 728 } 729 730 static int 731 tty_update_cursor(struct tty *tty, int mode, struct screen *s) 732 { 733 enum screen_cursor_style cstyle; 734 int ccolour, changed, cmode = mode; 735 736 /* Set cursor colour if changed. */ 737 if (s != NULL) { 738 ccolour = s->ccolour; 739 if (s->ccolour == -1) 740 ccolour = s->default_ccolour; 741 tty_force_cursor_colour(tty, ccolour); 742 } 743 744 /* If cursor is off, set as invisible. */ 745 if (~cmode & MODE_CURSOR) { 746 if (tty->mode & MODE_CURSOR) 747 tty_putcode(tty, TTYC_CIVIS); 748 return (cmode); 749 } 750 751 /* Check if blinking or very visible flag changed or style changed. */ 752 if (s == NULL) 753 cstyle = tty->cstyle; 754 else { 755 cstyle = s->cstyle; 756 if (cstyle == SCREEN_CURSOR_DEFAULT) { 757 if (~cmode & MODE_CURSOR_BLINKING_SET) { 758 if (s->default_mode & MODE_CURSOR_BLINKING) 759 cmode |= MODE_CURSOR_BLINKING; 760 else 761 cmode &= ~MODE_CURSOR_BLINKING; 762 } 763 cstyle = s->default_cstyle; 764 } 765 } 766 767 /* If nothing changed, do nothing. */ 768 changed = cmode ^ tty->mode; 769 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 770 return (cmode); 771 772 /* 773 * Set cursor style. If an explicit style has been set with DECSCUSR, 774 * set it if supported, otherwise send cvvis for blinking styles. 775 * 776 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 777 * if either the blinking or very visible flags are set. 778 */ 779 tty_putcode(tty, TTYC_CNORM); 780 switch (cstyle) { 781 case SCREEN_CURSOR_DEFAULT: 782 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 783 if (tty_term_has(tty->term, TTYC_SE)) 784 tty_putcode(tty, TTYC_SE); 785 else 786 tty_putcode_i(tty, TTYC_SS, 0); 787 } 788 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 789 tty_putcode(tty, TTYC_CVVIS); 790 break; 791 case SCREEN_CURSOR_BLOCK: 792 if (tty_term_has(tty->term, TTYC_SS)) { 793 if (cmode & MODE_CURSOR_BLINKING) 794 tty_putcode_i(tty, TTYC_SS, 1); 795 else 796 tty_putcode_i(tty, TTYC_SS, 2); 797 } else if (cmode & MODE_CURSOR_BLINKING) 798 tty_putcode(tty, TTYC_CVVIS); 799 break; 800 case SCREEN_CURSOR_UNDERLINE: 801 if (tty_term_has(tty->term, TTYC_SS)) { 802 if (cmode & MODE_CURSOR_BLINKING) 803 tty_putcode_i(tty, TTYC_SS, 3); 804 else 805 tty_putcode_i(tty, TTYC_SS, 4); 806 } else if (cmode & MODE_CURSOR_BLINKING) 807 tty_putcode(tty, TTYC_CVVIS); 808 break; 809 case SCREEN_CURSOR_BAR: 810 if (tty_term_has(tty->term, TTYC_SS)) { 811 if (cmode & MODE_CURSOR_BLINKING) 812 tty_putcode_i(tty, TTYC_SS, 5); 813 else 814 tty_putcode_i(tty, TTYC_SS, 6); 815 } else if (cmode & MODE_CURSOR_BLINKING) 816 tty_putcode(tty, TTYC_CVVIS); 817 break; 818 } 819 tty->cstyle = cstyle; 820 return (cmode); 821 } 822 823 void 824 tty_update_mode(struct tty *tty, int mode, struct screen *s) 825 { 826 struct tty_term *term = tty->term; 827 struct client *c = tty->client; 828 int changed; 829 830 if (tty->flags & TTY_NOCURSOR) 831 mode &= ~MODE_CURSOR; 832 833 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING) 834 mode |= MODE_CURSOR_BLINKING; 835 else 836 mode &= ~MODE_CURSOR_BLINKING; 837 838 changed = mode ^ tty->mode; 839 if (log_get_level() != 0 && changed != 0) { 840 log_debug("%s: current mode %s", c->name, 841 screen_mode_to_string(tty->mode)); 842 log_debug("%s: setting mode %s", c->name, 843 screen_mode_to_string(mode)); 844 } 845 846 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) { 847 /* 848 * If the mouse modes have changed, clear then all and apply 849 * again. There are differences in how terminals track the 850 * various bits. 851 */ 852 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l"); 853 if (mode & ALL_MOUSE_MODES) 854 tty_puts(tty, "\033[?1006h"); 855 if (mode & MODE_MOUSE_ALL) 856 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h"); 857 else if (mode & MODE_MOUSE_BUTTON) 858 tty_puts(tty, "\033[?1000h\033[?1002h"); 859 else if (mode & MODE_MOUSE_STANDARD) 860 tty_puts(tty, "\033[?1000h"); 861 } 862 tty->mode = mode; 863 } 864 865 static void 866 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 867 enum tty_code_code code1, u_int n) 868 { 869 if (tty_term_has(tty->term, code)) 870 tty_putcode_i(tty, code, n); 871 else { 872 while (n-- > 0) 873 tty_putcode(tty, code1); 874 } 875 } 876 877 static void 878 tty_repeat_space(struct tty *tty, u_int n) 879 { 880 static char s[500]; 881 882 if (*s != ' ') 883 memset(s, ' ', sizeof s); 884 885 while (n > sizeof s) { 886 tty_putn(tty, s, sizeof s, sizeof s); 887 n -= sizeof s; 888 } 889 if (n != 0) 890 tty_putn(tty, s, n, n); 891 } 892 893 /* Is this window bigger than the terminal? */ 894 int 895 tty_window_bigger(struct tty *tty) 896 { 897 struct client *c = tty->client; 898 struct window *w = c->session->curw->window; 899 900 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 901 } 902 903 /* What offset should this window be drawn at? */ 904 int 905 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 906 { 907 *ox = tty->oox; 908 *oy = tty->ooy; 909 *sx = tty->osx; 910 *sy = tty->osy; 911 912 return (tty->oflag); 913 } 914 915 /* What offset should this window be drawn at? */ 916 static int 917 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 918 { 919 struct client *c = tty->client; 920 struct window *w = c->session->curw->window; 921 struct window_pane *wp = server_client_get_pane(c); 922 u_int cx, cy, lines; 923 924 lines = status_line_size(c); 925 926 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 927 *ox = 0; 928 *oy = 0; 929 *sx = w->sx; 930 *sy = w->sy; 931 932 c->pan_window = NULL; 933 return (0); 934 } 935 936 *sx = tty->sx; 937 *sy = tty->sy - lines; 938 939 if (c->pan_window == w) { 940 if (*sx >= w->sx) 941 c->pan_ox = 0; 942 else if (c->pan_ox + *sx > w->sx) 943 c->pan_ox = w->sx - *sx; 944 *ox = c->pan_ox; 945 if (*sy >= w->sy) 946 c->pan_oy = 0; 947 else if (c->pan_oy + *sy > w->sy) 948 c->pan_oy = w->sy - *sy; 949 *oy = c->pan_oy; 950 return (1); 951 } 952 953 if (~wp->screen->mode & MODE_CURSOR) { 954 *ox = 0; 955 *oy = 0; 956 } else { 957 cx = wp->xoff + wp->screen->cx; 958 cy = wp->yoff + wp->screen->cy; 959 960 if (cx < *sx) 961 *ox = 0; 962 else if (cx > w->sx - *sx) 963 *ox = w->sx - *sx; 964 else 965 *ox = cx - *sx / 2; 966 967 if (cy < *sy) 968 *oy = 0; 969 else if (cy > w->sy - *sy) 970 *oy = w->sy - *sy; 971 else 972 *oy = cy - *sy / 2; 973 } 974 975 c->pan_window = NULL; 976 return (1); 977 } 978 979 /* Update stored offsets for a window and redraw if necessary. */ 980 void 981 tty_update_window_offset(struct window *w) 982 { 983 struct client *c; 984 985 TAILQ_FOREACH(c, &clients, entry) { 986 if (c->session != NULL && 987 c->session->curw != NULL && 988 c->session->curw->window == w) 989 tty_update_client_offset(c); 990 } 991 } 992 993 /* Update stored offsets for a client and redraw if necessary. */ 994 void 995 tty_update_client_offset(struct client *c) 996 { 997 u_int ox, oy, sx, sy; 998 999 if (~c->flags & CLIENT_TERMINAL) 1000 return; 1001 1002 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 1003 if (ox == c->tty.oox && 1004 oy == c->tty.ooy && 1005 sx == c->tty.osx && 1006 sy == c->tty.osy) 1007 return; 1008 1009 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 1010 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 1011 ox, oy, sx, sy); 1012 1013 c->tty.oox = ox; 1014 c->tty.ooy = oy; 1015 c->tty.osx = sx; 1016 c->tty.osy = sy; 1017 1018 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 1019 } 1020 1021 /* 1022 * Is the region large enough to be worth redrawing once later rather than 1023 * probably several times now? Currently yes if it is more than 50% of the 1024 * pane. 1025 */ 1026 static int 1027 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 1028 { 1029 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 1030 } 1031 1032 /* 1033 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 1034 * emulated. 1035 */ 1036 static int 1037 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 1038 { 1039 if (tty_term_flag(tty->term, TTYC_BCE)) 1040 return (0); 1041 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 1042 return (1); 1043 return (0); 1044 } 1045 1046 /* 1047 * Redraw scroll region using data from screen (already updated). Used when 1048 * CSR not supported, or window is a pane that doesn't take up the full 1049 * width of the terminal. 1050 */ 1051 static void 1052 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 1053 { 1054 struct client *c = tty->client; 1055 u_int i; 1056 1057 /* 1058 * If region is large, schedule a redraw. In most cases this is likely 1059 * to be followed by some more scrolling. 1060 */ 1061 if (tty_large_region(tty, ctx)) { 1062 log_debug("%s: %s large redraw", __func__, c->name); 1063 ctx->redraw_cb(ctx); 1064 return; 1065 } 1066 1067 for (i = ctx->orupper; i <= ctx->orlower; i++) 1068 tty_draw_pane(tty, ctx, i); 1069 } 1070 1071 /* Is this position visible in the pane? */ 1072 static int 1073 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1074 u_int py, u_int nx, u_int ny) 1075 { 1076 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1077 1078 if (!ctx->bigger) 1079 return (1); 1080 1081 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1082 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1083 return (0); 1084 return (1); 1085 } 1086 1087 /* Clamp line position to visible part of pane. */ 1088 static int 1089 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1090 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1091 { 1092 u_int xoff = ctx->rxoff + px; 1093 1094 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1095 return (0); 1096 *ry = ctx->yoff + py - ctx->woy; 1097 1098 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1099 /* All visible. */ 1100 *i = 0; 1101 *x = ctx->xoff + px - ctx->wox; 1102 *rx = nx; 1103 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1104 /* Both left and right not visible. */ 1105 *i = ctx->wox; 1106 *x = 0; 1107 *rx = ctx->wsx; 1108 } else if (xoff < ctx->wox) { 1109 /* Left not visible. */ 1110 *i = ctx->wox - (ctx->xoff + px); 1111 *x = 0; 1112 *rx = nx - *i; 1113 } else { 1114 /* Right not visible. */ 1115 *i = 0; 1116 *x = (ctx->xoff + px) - ctx->wox; 1117 *rx = ctx->wsx - *x; 1118 } 1119 if (*rx > nx) 1120 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1121 1122 return (1); 1123 } 1124 1125 /* Clear a line. */ 1126 static void 1127 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1128 u_int px, u_int nx, u_int bg) 1129 { 1130 struct client *c = tty->client; 1131 struct overlay_ranges r; 1132 u_int i; 1133 1134 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1135 1136 /* Nothing to clear. */ 1137 if (nx == 0) 1138 return; 1139 1140 /* If genuine BCE is available, can try escape sequences. */ 1141 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1142 /* Off the end of the line, use EL if available. */ 1143 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1144 tty_cursor(tty, px, py); 1145 tty_putcode(tty, TTYC_EL); 1146 return; 1147 } 1148 1149 /* At the start of the line. Use EL1. */ 1150 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1151 tty_cursor(tty, px + nx - 1, py); 1152 tty_putcode(tty, TTYC_EL1); 1153 return; 1154 } 1155 1156 /* Section of line. Use ECH if possible. */ 1157 if (tty_term_has(tty->term, TTYC_ECH)) { 1158 tty_cursor(tty, px, py); 1159 tty_putcode_i(tty, TTYC_ECH, nx); 1160 return; 1161 } 1162 } 1163 1164 /* 1165 * Couldn't use an escape sequence, use spaces. Clear only the visible 1166 * bit if there is an overlay. 1167 */ 1168 tty_check_overlay_range(tty, px, py, nx, &r); 1169 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 1170 if (r.nx[i] == 0) 1171 continue; 1172 tty_cursor(tty, r.px[i], py); 1173 tty_repeat_space(tty, r.nx[i]); 1174 } 1175 } 1176 1177 /* Clear a line, adjusting to visible part of pane. */ 1178 static void 1179 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1180 u_int px, u_int nx, u_int bg) 1181 { 1182 struct client *c = tty->client; 1183 u_int i, x, rx, ry; 1184 1185 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1186 1187 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1188 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1189 } 1190 1191 /* Clamp area position to visible part of pane. */ 1192 static int 1193 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1194 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1195 u_int *ry) 1196 { 1197 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1198 1199 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1200 return (0); 1201 1202 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1203 /* All visible. */ 1204 *i = 0; 1205 *x = ctx->xoff + px - ctx->wox; 1206 *rx = nx; 1207 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1208 /* Both left and right not visible. */ 1209 *i = ctx->wox; 1210 *x = 0; 1211 *rx = ctx->wsx; 1212 } else if (xoff < ctx->wox) { 1213 /* Left not visible. */ 1214 *i = ctx->wox - (ctx->xoff + px); 1215 *x = 0; 1216 *rx = nx - *i; 1217 } else { 1218 /* Right not visible. */ 1219 *i = 0; 1220 *x = (ctx->xoff + px) - ctx->wox; 1221 *rx = ctx->wsx - *x; 1222 } 1223 if (*rx > nx) 1224 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1225 1226 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1227 /* All visible. */ 1228 *j = 0; 1229 *y = ctx->yoff + py - ctx->woy; 1230 *ry = ny; 1231 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1232 /* Both top and bottom not visible. */ 1233 *j = ctx->woy; 1234 *y = 0; 1235 *ry = ctx->wsy; 1236 } else if (yoff < ctx->woy) { 1237 /* Top not visible. */ 1238 *j = ctx->woy - (ctx->yoff + py); 1239 *y = 0; 1240 *ry = ny - *j; 1241 } else { 1242 /* Bottom not visible. */ 1243 *j = 0; 1244 *y = (ctx->yoff + py) - ctx->woy; 1245 *ry = ctx->wsy - *y; 1246 } 1247 if (*ry > ny) 1248 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1249 1250 return (1); 1251 } 1252 1253 /* Clear an area, adjusting to visible part of pane. */ 1254 static void 1255 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1256 u_int ny, u_int px, u_int nx, u_int bg) 1257 { 1258 struct client *c = tty->client; 1259 u_int yy; 1260 char tmp[64]; 1261 1262 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1263 1264 /* Nothing to clear. */ 1265 if (nx == 0 || ny == 0) 1266 return; 1267 1268 /* If genuine BCE is available, can try escape sequences. */ 1269 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1270 /* Use ED if clearing off the bottom of the terminal. */ 1271 if (px == 0 && 1272 px + nx >= tty->sx && 1273 py + ny >= tty->sy && 1274 tty_term_has(tty->term, TTYC_ED)) { 1275 tty_cursor(tty, 0, py); 1276 tty_putcode(tty, TTYC_ED); 1277 return; 1278 } 1279 1280 /* 1281 * On VT420 compatible terminals we can use DECFRA if the 1282 * background colour isn't default (because it doesn't work 1283 * after SGR 0). 1284 */ 1285 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1286 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1287 py + 1, px + 1, py + ny, px + nx); 1288 tty_puts(tty, tmp); 1289 return; 1290 } 1291 1292 /* Full lines can be scrolled away to clear them. */ 1293 if (px == 0 && 1294 px + nx >= tty->sx && 1295 ny > 2 && 1296 tty_term_has(tty->term, TTYC_CSR) && 1297 tty_term_has(tty->term, TTYC_INDN)) { 1298 tty_region(tty, py, py + ny - 1); 1299 tty_margin_off(tty); 1300 tty_putcode_i(tty, TTYC_INDN, ny); 1301 return; 1302 } 1303 1304 /* 1305 * If margins are supported, can just scroll the area off to 1306 * clear it. 1307 */ 1308 if (nx > 2 && 1309 ny > 2 && 1310 tty_term_has(tty->term, TTYC_CSR) && 1311 tty_use_margin(tty) && 1312 tty_term_has(tty->term, TTYC_INDN)) { 1313 tty_region(tty, py, py + ny - 1); 1314 tty_margin(tty, px, px + nx - 1); 1315 tty_putcode_i(tty, TTYC_INDN, ny); 1316 return; 1317 } 1318 } 1319 1320 /* Couldn't use an escape sequence, loop over the lines. */ 1321 for (yy = py; yy < py + ny; yy++) 1322 tty_clear_line(tty, defaults, yy, px, nx, bg); 1323 } 1324 1325 /* Clear an area in a pane. */ 1326 static void 1327 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1328 u_int ny, u_int px, u_int nx, u_int bg) 1329 { 1330 u_int i, j, x, y, rx, ry; 1331 1332 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1333 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1334 } 1335 1336 static void 1337 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1338 { 1339 struct screen *s = ctx->s; 1340 u_int nx = ctx->sx, i, x, rx, ry; 1341 1342 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1343 1344 if (!ctx->bigger) { 1345 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1346 &ctx->defaults, ctx->palette); 1347 return; 1348 } 1349 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1350 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1351 ctx->palette); 1352 } 1353 } 1354 1355 static const struct grid_cell * 1356 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1357 { 1358 static struct grid_cell new; 1359 int c; 1360 1361 /* Characters less than 0x7f are always fine, no matter what. */ 1362 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1363 return (gc); 1364 if (gc->flags & GRID_FLAG_TAB) 1365 return (gc); 1366 1367 /* UTF-8 terminal and a UTF-8 character - fine. */ 1368 if (tty->client->flags & CLIENT_UTF8) 1369 return (gc); 1370 memcpy(&new, gc, sizeof new); 1371 1372 /* See if this can be mapped to an ACS character. */ 1373 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1374 if (c != -1) { 1375 utf8_set(&new.data, c); 1376 new.attr |= GRID_ATTR_CHARSET; 1377 return (&new); 1378 } 1379 1380 /* Replace by the right number of underscores. */ 1381 new.data.size = gc->data.width; 1382 if (new.data.size > UTF8_SIZE) 1383 new.data.size = UTF8_SIZE; 1384 memset(new.data.data, '_', new.data.size); 1385 return (&new); 1386 } 1387 1388 /* 1389 * Check if a single character is obstructed by the overlay and return a 1390 * boolean. 1391 */ 1392 static int 1393 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1394 { 1395 struct overlay_ranges r; 1396 1397 /* 1398 * A unit width range will always return nx[2] == 0 from a check, even 1399 * with multiple overlays, so it's sufficient to check just the first 1400 * two entries. 1401 */ 1402 tty_check_overlay_range(tty, px, py, 1, &r); 1403 if (r.nx[0] + r.nx[1] == 0) 1404 return (0); 1405 return (1); 1406 } 1407 1408 /* Return parts of the input range which are visible. */ 1409 static void 1410 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx, 1411 struct overlay_ranges *r) 1412 { 1413 struct client *c = tty->client; 1414 1415 if (c->overlay_check == NULL) { 1416 r->px[0] = px; 1417 r->nx[0] = nx; 1418 r->px[1] = 0; 1419 r->nx[1] = 0; 1420 r->px[2] = 0; 1421 r->nx[2] = 0; 1422 return; 1423 } 1424 1425 c->overlay_check(c, c->overlay_data, px, py, nx, r); 1426 } 1427 1428 void 1429 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1430 u_int atx, u_int aty, const struct grid_cell *defaults, 1431 struct colour_palette *palette) 1432 { 1433 struct grid *gd = s->grid; 1434 struct grid_cell gc, last; 1435 const struct grid_cell *gcp; 1436 struct grid_line *gl; 1437 struct client *c = tty->client; 1438 struct overlay_ranges r; 1439 u_int i, j, ux, sx, width, hidden, eux, nxx; 1440 u_int cellsize; 1441 int flags, cleared = 0, wrapped = 0; 1442 char buf[512]; 1443 size_t len; 1444 1445 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1446 px, py, nx, atx, aty); 1447 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1448 defaults->bg); 1449 1450 /* 1451 * py is the line in the screen to draw. 1452 * px is the start x and nx is the width to draw. 1453 * atx,aty is the line on the terminal to draw it. 1454 */ 1455 1456 flags = (tty->flags & TTY_NOCURSOR); 1457 tty->flags |= TTY_NOCURSOR; 1458 tty_update_mode(tty, tty->mode, s); 1459 1460 tty_region_off(tty); 1461 tty_margin_off(tty); 1462 1463 /* 1464 * Clamp the width to cellsize - note this is not cellused, because 1465 * there may be empty background cells after it (from BCE). 1466 */ 1467 sx = screen_size_x(s); 1468 if (nx > sx) 1469 nx = sx; 1470 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1471 if (sx > cellsize) 1472 sx = cellsize; 1473 if (sx > tty->sx) 1474 sx = tty->sx; 1475 if (sx > nx) 1476 sx = nx; 1477 ux = 0; 1478 1479 if (py == 0) 1480 gl = NULL; 1481 else 1482 gl = grid_get_line(gd, gd->hsize + py - 1); 1483 if (gl == NULL || 1484 (~gl->flags & GRID_LINE_WRAPPED) || 1485 atx != 0 || 1486 tty->cx < tty->sx || 1487 nx < tty->sx) { 1488 if (nx < tty->sx && 1489 atx == 0 && 1490 px + sx != nx && 1491 tty_term_has(tty->term, TTYC_EL1) && 1492 !tty_fake_bce(tty, defaults, 8) && 1493 c->overlay_check == NULL) { 1494 tty_default_attributes(tty, defaults, palette, 8, 1495 s->hyperlinks); 1496 tty_cursor(tty, nx - 1, aty); 1497 tty_putcode(tty, TTYC_EL1); 1498 cleared = 1; 1499 } 1500 } else { 1501 log_debug("%s: wrapped line %u", __func__, aty); 1502 wrapped = 1; 1503 } 1504 1505 memcpy(&last, &grid_default_cell, sizeof last); 1506 len = 0; 1507 width = 0; 1508 1509 for (i = 0; i < sx; i++) { 1510 grid_view_get_cell(gd, px + i, py, &gc); 1511 gcp = tty_check_codeset(tty, &gc); 1512 if (len != 0 && 1513 (!tty_check_overlay(tty, atx + ux + width, aty) || 1514 (gcp->attr & GRID_ATTR_CHARSET) || 1515 gcp->flags != last.flags || 1516 gcp->attr != last.attr || 1517 gcp->fg != last.fg || 1518 gcp->bg != last.bg || 1519 gcp->us != last.us || 1520 gcp->link != last.link || 1521 ux + width + gcp->data.width > nx || 1522 (sizeof buf) - len < gcp->data.size)) { 1523 tty_attributes(tty, &last, defaults, palette, 1524 s->hyperlinks); 1525 if (last.flags & GRID_FLAG_CLEARED) { 1526 log_debug("%s: %zu cleared", __func__, len); 1527 tty_clear_line(tty, defaults, aty, atx + ux, 1528 width, last.bg); 1529 } else { 1530 if (!wrapped || atx != 0 || ux != 0) 1531 tty_cursor(tty, atx + ux, aty); 1532 tty_putn(tty, buf, len, width); 1533 } 1534 ux += width; 1535 1536 len = 0; 1537 width = 0; 1538 wrapped = 0; 1539 } 1540 1541 if (gcp->flags & GRID_FLAG_SELECTED) 1542 screen_select_cell(s, &last, gcp); 1543 else 1544 memcpy(&last, gcp, sizeof last); 1545 1546 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width, 1547 &r); 1548 hidden = 0; 1549 for (j = 0; j < OVERLAY_MAX_RANGES; j++) 1550 hidden += r.nx[j]; 1551 hidden = gcp->data.width - hidden; 1552 if (hidden != 0 && hidden == gcp->data.width) { 1553 if (~gcp->flags & GRID_FLAG_PADDING) 1554 ux += gcp->data.width; 1555 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1556 if (~gcp->flags & GRID_FLAG_PADDING) { 1557 tty_attributes(tty, &last, defaults, palette, 1558 s->hyperlinks); 1559 for (j = 0; j < OVERLAY_MAX_RANGES; j++) { 1560 if (r.nx[j] == 0) 1561 continue; 1562 /* Effective width drawn so far. */ 1563 eux = r.px[j] - atx; 1564 if (eux < nx) { 1565 tty_cursor(tty, r.px[j], aty); 1566 nxx = nx - eux; 1567 if (r.nx[j] > nxx) 1568 r.nx[j] = nxx; 1569 tty_repeat_space(tty, r.nx[j]); 1570 ux = eux + r.nx[j]; 1571 } 1572 } 1573 } 1574 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1575 tty_attributes(tty, &last, defaults, palette, 1576 s->hyperlinks); 1577 tty_cursor(tty, atx + ux, aty); 1578 for (j = 0; j < gcp->data.size; j++) 1579 tty_putc(tty, gcp->data.data[j]); 1580 ux += gcp->data.width; 1581 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1582 memcpy(buf + len, gcp->data.data, gcp->data.size); 1583 len += gcp->data.size; 1584 width += gcp->data.width; 1585 } 1586 } 1587 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1588 tty_attributes(tty, &last, defaults, palette, s->hyperlinks); 1589 if (last.flags & GRID_FLAG_CLEARED) { 1590 log_debug("%s: %zu cleared (end)", __func__, len); 1591 tty_clear_line(tty, defaults, aty, atx + ux, width, 1592 last.bg); 1593 } else { 1594 if (!wrapped || atx != 0 || ux != 0) 1595 tty_cursor(tty, atx + ux, aty); 1596 tty_putn(tty, buf, len, width); 1597 } 1598 ux += width; 1599 } 1600 1601 if (!cleared && ux < nx) { 1602 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1603 nx - ux, len); 1604 tty_default_attributes(tty, defaults, palette, 8, 1605 s->hyperlinks); 1606 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1607 } 1608 1609 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1610 tty_update_mode(tty, tty->mode, s); 1611 } 1612 1613 void 1614 tty_sync_start(struct tty *tty) 1615 { 1616 if (tty->flags & TTY_BLOCK) 1617 return; 1618 if (tty->flags & TTY_SYNCING) 1619 return; 1620 tty->flags |= TTY_SYNCING; 1621 1622 if (tty_term_has(tty->term, TTYC_SYNC)) { 1623 log_debug("%s sync start", tty->client->name); 1624 tty_putcode_i(tty, TTYC_SYNC, 1); 1625 } 1626 } 1627 1628 void 1629 tty_sync_end(struct tty *tty) 1630 { 1631 if (tty->flags & TTY_BLOCK) 1632 return; 1633 if (~tty->flags & TTY_SYNCING) 1634 return; 1635 tty->flags &= ~TTY_SYNCING; 1636 1637 if (tty_term_has(tty->term, TTYC_SYNC)) { 1638 log_debug("%s sync end", tty->client->name); 1639 tty_putcode_i(tty, TTYC_SYNC, 2); 1640 } 1641 } 1642 1643 static int 1644 tty_client_ready(const struct tty_ctx *ctx, struct client *c) 1645 { 1646 if (c->session == NULL || c->tty.term == NULL) 1647 return (0); 1648 if (c->flags & CLIENT_SUSPENDED) 1649 return (0); 1650 1651 /* 1652 * If invisible panes are allowed (used for passthrough), don't care if 1653 * redrawing or frozen. 1654 */ 1655 if (ctx->allow_invisible_panes) 1656 return (1); 1657 1658 if (c->flags & CLIENT_REDRAWWINDOW) 1659 return (0); 1660 if (c->tty.flags & TTY_FREEZE) 1661 return (0); 1662 return (1); 1663 } 1664 1665 void 1666 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1667 struct tty_ctx *ctx) 1668 { 1669 struct client *c; 1670 int state; 1671 1672 if (ctx->set_client_cb == NULL) 1673 return; 1674 TAILQ_FOREACH(c, &clients, entry) { 1675 if (tty_client_ready(ctx, c)) { 1676 state = ctx->set_client_cb(ctx, c); 1677 if (state == -1) 1678 break; 1679 if (state == 0) 1680 continue; 1681 cmdfn(&c->tty, ctx); 1682 } 1683 } 1684 } 1685 1686 void 1687 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1688 { 1689 struct client *c = tty->client; 1690 1691 if (ctx->bigger || 1692 !tty_full_width(tty, ctx) || 1693 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1694 (!tty_term_has(tty->term, TTYC_ICH) && 1695 !tty_term_has(tty->term, TTYC_ICH1)) || 1696 c->overlay_check != NULL) { 1697 tty_draw_pane(tty, ctx, ctx->ocy); 1698 return; 1699 } 1700 1701 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1702 ctx->s->hyperlinks); 1703 1704 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1705 1706 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1707 } 1708 1709 void 1710 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1711 { 1712 struct client *c = tty->client; 1713 1714 if (ctx->bigger || 1715 !tty_full_width(tty, ctx) || 1716 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1717 (!tty_term_has(tty->term, TTYC_DCH) && 1718 !tty_term_has(tty->term, TTYC_DCH1)) || 1719 c->overlay_check != NULL) { 1720 tty_draw_pane(tty, ctx, ctx->ocy); 1721 return; 1722 } 1723 1724 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1725 ctx->s->hyperlinks); 1726 1727 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1728 1729 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1730 } 1731 1732 void 1733 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1734 { 1735 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1736 ctx->s->hyperlinks); 1737 1738 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1739 } 1740 1741 void 1742 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1743 { 1744 struct client *c = tty->client; 1745 1746 if (ctx->bigger || 1747 !tty_full_width(tty, ctx) || 1748 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1749 !tty_term_has(tty->term, TTYC_CSR) || 1750 !tty_term_has(tty->term, TTYC_IL1) || 1751 ctx->sx == 1 || 1752 ctx->sy == 1 || 1753 c->overlay_check != NULL) { 1754 tty_redraw_region(tty, ctx); 1755 return; 1756 } 1757 1758 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1759 ctx->s->hyperlinks); 1760 1761 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1762 tty_margin_off(tty); 1763 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1764 1765 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1766 tty->cx = tty->cy = UINT_MAX; 1767 } 1768 1769 void 1770 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1771 { 1772 struct client *c = tty->client; 1773 1774 if (ctx->bigger || 1775 !tty_full_width(tty, ctx) || 1776 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1777 !tty_term_has(tty->term, TTYC_CSR) || 1778 !tty_term_has(tty->term, TTYC_DL1) || 1779 ctx->sx == 1 || 1780 ctx->sy == 1 || 1781 c->overlay_check != NULL) { 1782 tty_redraw_region(tty, ctx); 1783 return; 1784 } 1785 1786 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1787 ctx->s->hyperlinks); 1788 1789 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1790 tty_margin_off(tty); 1791 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1792 1793 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1794 tty->cx = tty->cy = UINT_MAX; 1795 } 1796 1797 void 1798 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1799 { 1800 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1801 ctx->s->hyperlinks); 1802 1803 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1804 } 1805 1806 void 1807 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1808 { 1809 u_int nx = ctx->sx - ctx->ocx; 1810 1811 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1812 ctx->s->hyperlinks); 1813 1814 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1815 } 1816 1817 void 1818 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1819 { 1820 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1821 ctx->s->hyperlinks); 1822 1823 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1824 } 1825 1826 void 1827 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1828 { 1829 struct client *c = tty->client; 1830 1831 if (ctx->ocy != ctx->orupper) 1832 return; 1833 1834 if (ctx->bigger || 1835 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1836 tty_fake_bce(tty, &ctx->defaults, 8) || 1837 !tty_term_has(tty->term, TTYC_CSR) || 1838 (!tty_term_has(tty->term, TTYC_RI) && 1839 !tty_term_has(tty->term, TTYC_RIN)) || 1840 ctx->sx == 1 || 1841 ctx->sy == 1 || 1842 c->overlay_check != NULL) { 1843 tty_redraw_region(tty, ctx); 1844 return; 1845 } 1846 1847 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1848 ctx->s->hyperlinks); 1849 1850 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1851 tty_margin_pane(tty, ctx); 1852 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1853 1854 if (tty_term_has(tty->term, TTYC_RI)) 1855 tty_putcode(tty, TTYC_RI); 1856 else 1857 tty_putcode_i(tty, TTYC_RIN, 1); 1858 } 1859 1860 void 1861 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1862 { 1863 struct client *c = tty->client; 1864 1865 if (ctx->ocy != ctx->orlower) 1866 return; 1867 1868 if (ctx->bigger || 1869 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1870 tty_fake_bce(tty, &ctx->defaults, 8) || 1871 !tty_term_has(tty->term, TTYC_CSR) || 1872 ctx->sx == 1 || 1873 ctx->sy == 1 || 1874 c->overlay_check != NULL) { 1875 tty_redraw_region(tty, ctx); 1876 return; 1877 } 1878 1879 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1880 ctx->s->hyperlinks); 1881 1882 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1883 tty_margin_pane(tty, ctx); 1884 1885 /* 1886 * If we want to wrap a pane while using margins, the cursor needs to 1887 * be exactly on the right of the region. If the cursor is entirely off 1888 * the edge - move it back to the right. Some terminals are funny about 1889 * this and insert extra spaces, so only use the right if margins are 1890 * enabled. 1891 */ 1892 if (ctx->xoff + ctx->ocx > tty->rright) { 1893 if (!tty_use_margin(tty)) 1894 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1895 else 1896 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1897 } else 1898 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1899 1900 tty_putc(tty, '\n'); 1901 } 1902 1903 void 1904 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1905 { 1906 struct client *c = tty->client; 1907 u_int i; 1908 1909 if (ctx->bigger || 1910 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1911 tty_fake_bce(tty, &ctx->defaults, 8) || 1912 !tty_term_has(tty->term, TTYC_CSR) || 1913 ctx->sx == 1 || 1914 ctx->sy == 1 || 1915 c->overlay_check != NULL) { 1916 tty_redraw_region(tty, ctx); 1917 return; 1918 } 1919 1920 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1921 ctx->s->hyperlinks); 1922 1923 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1924 tty_margin_pane(tty, ctx); 1925 1926 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1927 if (!tty_use_margin(tty)) 1928 tty_cursor(tty, 0, tty->rlower); 1929 else 1930 tty_cursor(tty, tty->rright, tty->rlower); 1931 for (i = 0; i < ctx->num; i++) 1932 tty_putc(tty, '\n'); 1933 } else { 1934 if (tty->cy == UINT_MAX) 1935 tty_cursor(tty, 0, 0); 1936 else 1937 tty_cursor(tty, 0, tty->cy); 1938 tty_putcode_i(tty, TTYC_INDN, ctx->num); 1939 } 1940 } 1941 1942 void 1943 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1944 { 1945 u_int i; 1946 struct client *c = tty->client; 1947 1948 if (ctx->bigger || 1949 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1950 tty_fake_bce(tty, &ctx->defaults, 8) || 1951 !tty_term_has(tty->term, TTYC_CSR) || 1952 (!tty_term_has(tty->term, TTYC_RI) && 1953 !tty_term_has(tty->term, TTYC_RIN)) || 1954 ctx->sx == 1 || 1955 ctx->sy == 1 || 1956 c->overlay_check != NULL) { 1957 tty_redraw_region(tty, ctx); 1958 return; 1959 } 1960 1961 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1962 ctx->s->hyperlinks); 1963 1964 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1965 tty_margin_pane(tty, ctx); 1966 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1967 1968 if (tty_term_has(tty->term, TTYC_RIN)) 1969 tty_putcode_i(tty, TTYC_RIN, ctx->num); 1970 else { 1971 for (i = 0; i < ctx->num; i++) 1972 tty_putcode(tty, TTYC_RI); 1973 } 1974 } 1975 1976 void 1977 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1978 { 1979 u_int px, py, nx, ny; 1980 1981 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1982 ctx->s->hyperlinks); 1983 1984 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1985 tty_margin_off(tty); 1986 1987 px = 0; 1988 nx = ctx->sx; 1989 py = ctx->ocy + 1; 1990 ny = ctx->sy - ctx->ocy - 1; 1991 1992 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1993 1994 px = ctx->ocx; 1995 nx = ctx->sx - ctx->ocx; 1996 py = ctx->ocy; 1997 1998 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1999 } 2000 2001 void 2002 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 2003 { 2004 u_int px, py, nx, ny; 2005 2006 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2007 ctx->s->hyperlinks); 2008 2009 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2010 tty_margin_off(tty); 2011 2012 px = 0; 2013 nx = ctx->sx; 2014 py = 0; 2015 ny = ctx->ocy; 2016 2017 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2018 2019 px = 0; 2020 nx = ctx->ocx + 1; 2021 py = ctx->ocy; 2022 2023 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 2024 } 2025 2026 void 2027 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 2028 { 2029 u_int px, py, nx, ny; 2030 2031 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2032 ctx->s->hyperlinks); 2033 2034 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2035 tty_margin_off(tty); 2036 2037 px = 0; 2038 nx = ctx->sx; 2039 py = 0; 2040 ny = ctx->sy; 2041 2042 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2043 } 2044 2045 void 2046 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 2047 { 2048 u_int i, j; 2049 2050 if (ctx->bigger) { 2051 ctx->redraw_cb(ctx); 2052 return; 2053 } 2054 2055 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette, 2056 ctx->s->hyperlinks); 2057 2058 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2059 tty_margin_off(tty); 2060 2061 for (j = 0; j < ctx->sy; j++) { 2062 tty_cursor_pane(tty, ctx, 0, j); 2063 for (i = 0; i < ctx->sx; i++) 2064 tty_putc(tty, 'E'); 2065 } 2066 } 2067 2068 void 2069 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 2070 { 2071 const struct grid_cell *gcp = ctx->cell; 2072 struct screen *s = ctx->s; 2073 struct overlay_ranges r; 2074 u_int px, py, i, vis = 0; 2075 2076 px = ctx->xoff + ctx->ocx - ctx->wox; 2077 py = ctx->yoff + ctx->ocy - ctx->woy; 2078 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 2079 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 2080 return; 2081 2082 /* Handle partially obstructed wide characters. */ 2083 if (gcp->data.width > 1) { 2084 tty_check_overlay_range(tty, px, py, gcp->data.width, &r); 2085 for (i = 0; i < OVERLAY_MAX_RANGES; i++) 2086 vis += r.nx[i]; 2087 if (vis < gcp->data.width) { 2088 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width, 2089 px, py, &ctx->defaults, ctx->palette); 2090 return; 2091 } 2092 } 2093 2094 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 2095 ctx->ocy == ctx->orlower && 2096 tty_full_width(tty, ctx)) 2097 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2098 2099 tty_margin_off(tty); 2100 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2101 2102 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette, 2103 ctx->s->hyperlinks); 2104 2105 if (ctx->num == 1) 2106 tty_invalidate(tty); 2107 } 2108 2109 void 2110 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 2111 { 2112 struct overlay_ranges r; 2113 u_int i, px, py, cx; 2114 char *cp = ctx->ptr; 2115 2116 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 2117 return; 2118 2119 if (ctx->bigger && 2120 (ctx->xoff + ctx->ocx < ctx->wox || 2121 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 2122 if (!ctx->wrapped || 2123 !tty_full_width(tty, ctx) || 2124 (tty->term->flags & TERM_NOAM) || 2125 ctx->xoff + ctx->ocx != 0 || 2126 ctx->yoff + ctx->ocy != tty->cy + 1 || 2127 tty->cx < tty->sx || 2128 tty->cy == tty->rlower) 2129 tty_draw_pane(tty, ctx, ctx->ocy); 2130 else 2131 ctx->redraw_cb(ctx); 2132 return; 2133 } 2134 2135 tty_margin_off(tty); 2136 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2137 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks); 2138 2139 /* Get tty position from pane position for overlay check. */ 2140 px = ctx->xoff + ctx->ocx - ctx->wox; 2141 py = ctx->yoff + ctx->ocy - ctx->woy; 2142 2143 tty_check_overlay_range(tty, px, py, ctx->num, &r); 2144 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 2145 if (r.nx[i] == 0) 2146 continue; 2147 /* Convert back to pane position for printing. */ 2148 cx = r.px[i] - ctx->xoff + ctx->wox; 2149 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy); 2150 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]); 2151 } 2152 } 2153 2154 void 2155 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2156 { 2157 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num); 2158 } 2159 2160 void 2161 tty_set_selection(struct tty *tty, const char *flags, const char *buf, 2162 size_t len) 2163 { 2164 char *encoded; 2165 size_t size; 2166 2167 if (~tty->flags & TTY_STARTED) 2168 return; 2169 if (!tty_term_has(tty->term, TTYC_MS)) 2170 return; 2171 2172 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2173 encoded = xmalloc(size); 2174 2175 b64_ntop(buf, len, encoded, size); 2176 tty->flags |= TTY_NOBLOCK; 2177 tty_putcode_ss(tty, TTYC_MS, flags, encoded); 2178 2179 free(encoded); 2180 } 2181 2182 void 2183 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2184 { 2185 tty->flags |= TTY_NOBLOCK; 2186 tty_add(tty, ctx->ptr, ctx->num); 2187 tty_invalidate(tty); 2188 } 2189 2190 void 2191 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2192 { 2193 if (ctx->num == 0x11) { 2194 /* 2195 * This is an overlay and a command that moves the cursor so 2196 * start synchronized updates. 2197 */ 2198 tty_sync_start(tty); 2199 } else if (~ctx->num & 0x10) { 2200 /* 2201 * This is a pane. If there is an overlay, always start; 2202 * otherwise, only if requested. 2203 */ 2204 if (ctx->num || tty->client->overlay_draw != NULL) 2205 tty_sync_start(tty); 2206 } 2207 } 2208 2209 void 2210 tty_cell(struct tty *tty, const struct grid_cell *gc, 2211 const struct grid_cell *defaults, struct colour_palette *palette, 2212 struct hyperlinks *hl) 2213 { 2214 const struct grid_cell *gcp; 2215 2216 /* Skip last character if terminal is stupid. */ 2217 if ((tty->term->flags & TERM_NOAM) && 2218 tty->cy == tty->sy - 1 && 2219 tty->cx == tty->sx - 1) 2220 return; 2221 2222 /* If this is a padding character, do nothing. */ 2223 if (gc->flags & GRID_FLAG_PADDING) 2224 return; 2225 2226 /* Check the output codeset and apply attributes. */ 2227 gcp = tty_check_codeset(tty, gc); 2228 tty_attributes(tty, gcp, defaults, palette, hl); 2229 2230 /* If it is a single character, write with putc to handle ACS. */ 2231 if (gcp->data.size == 1) { 2232 tty_attributes(tty, gcp, defaults, palette, hl); 2233 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2234 return; 2235 tty_putc(tty, *gcp->data.data); 2236 return; 2237 } 2238 2239 /* Write the data. */ 2240 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2241 } 2242 2243 void 2244 tty_reset(struct tty *tty) 2245 { 2246 struct grid_cell *gc = &tty->cell; 2247 2248 if (!grid_cells_equal(gc, &grid_default_cell)) { 2249 if (gc->link != 0) 2250 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2251 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2252 tty_putcode(tty, TTYC_RMACS); 2253 tty_putcode(tty, TTYC_SGR0); 2254 memcpy(gc, &grid_default_cell, sizeof *gc); 2255 } 2256 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2257 } 2258 2259 void 2260 tty_invalidate(struct tty *tty) 2261 { 2262 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2263 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2264 2265 tty->cx = tty->cy = UINT_MAX; 2266 tty->rupper = tty->rleft = UINT_MAX; 2267 tty->rlower = tty->rright = UINT_MAX; 2268 2269 if (tty->flags & TTY_STARTED) { 2270 if (tty_use_margin(tty)) 2271 tty_putcode(tty, TTYC_ENMG); 2272 tty_putcode(tty, TTYC_SGR0); 2273 2274 tty->mode = ALL_MODES; 2275 tty_update_mode(tty, MODE_CURSOR, NULL); 2276 2277 tty_cursor(tty, 0, 0); 2278 tty_region_off(tty); 2279 tty_margin_off(tty); 2280 } else 2281 tty->mode = MODE_CURSOR; 2282 } 2283 2284 /* Turn off margin. */ 2285 void 2286 tty_region_off(struct tty *tty) 2287 { 2288 tty_region(tty, 0, tty->sy - 1); 2289 } 2290 2291 /* Set region inside pane. */ 2292 static void 2293 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2294 u_int rlower) 2295 { 2296 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2297 ctx->yoff + rlower - ctx->woy); 2298 } 2299 2300 /* Set region at absolute position. */ 2301 static void 2302 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2303 { 2304 if (tty->rlower == rlower && tty->rupper == rupper) 2305 return; 2306 if (!tty_term_has(tty->term, TTYC_CSR)) 2307 return; 2308 2309 tty->rupper = rupper; 2310 tty->rlower = rlower; 2311 2312 /* 2313 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2314 * 0,0 if it is beyond the last column (they do not reset their wrap 2315 * flag so further output causes a line feed). As a workaround, do an 2316 * explicit move to 0 first. 2317 */ 2318 if (tty->cx >= tty->sx) { 2319 if (tty->cy == UINT_MAX) 2320 tty_cursor(tty, 0, 0); 2321 else 2322 tty_cursor(tty, 0, tty->cy); 2323 } 2324 2325 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2326 tty->cx = tty->cy = UINT_MAX; 2327 } 2328 2329 /* Turn off margin. */ 2330 void 2331 tty_margin_off(struct tty *tty) 2332 { 2333 tty_margin(tty, 0, tty->sx - 1); 2334 } 2335 2336 /* Set margin inside pane. */ 2337 static void 2338 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2339 { 2340 tty_margin(tty, ctx->xoff - ctx->wox, 2341 ctx->xoff + ctx->sx - 1 - ctx->wox); 2342 } 2343 2344 /* Set margin at absolute position. */ 2345 static void 2346 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2347 { 2348 if (!tty_use_margin(tty)) 2349 return; 2350 if (tty->rleft == rleft && tty->rright == rright) 2351 return; 2352 2353 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2354 2355 tty->rleft = rleft; 2356 tty->rright = rright; 2357 2358 if (rleft == 0 && rright == tty->sx - 1) 2359 tty_putcode(tty, TTYC_CLMG); 2360 else 2361 tty_putcode_ii(tty, TTYC_CMG, rleft, rright); 2362 tty->cx = tty->cy = UINT_MAX; 2363 } 2364 2365 /* 2366 * Move the cursor, unless it would wrap itself when the next character is 2367 * printed. 2368 */ 2369 static void 2370 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2371 u_int cx, u_int cy) 2372 { 2373 if (!ctx->wrapped || 2374 !tty_full_width(tty, ctx) || 2375 (tty->term->flags & TERM_NOAM) || 2376 ctx->xoff + cx != 0 || 2377 ctx->yoff + cy != tty->cy + 1 || 2378 tty->cx < tty->sx || 2379 tty->cy == tty->rlower) 2380 tty_cursor_pane(tty, ctx, cx, cy); 2381 else 2382 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2383 } 2384 2385 /* Move cursor inside pane. */ 2386 static void 2387 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2388 { 2389 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2390 } 2391 2392 /* Move cursor to absolute position. */ 2393 void 2394 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2395 { 2396 struct tty_term *term = tty->term; 2397 u_int thisx, thisy; 2398 int change; 2399 2400 if (tty->flags & TTY_BLOCK) 2401 return; 2402 2403 thisx = tty->cx; 2404 thisy = tty->cy; 2405 2406 /* 2407 * If in the automargin space, and want to be there, do not move. 2408 * Otherwise, force the cursor to be in range (and complain). 2409 */ 2410 if (cx == thisx && cy == thisy && cx == tty->sx) 2411 return; 2412 if (cx > tty->sx - 1) { 2413 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1); 2414 cx = tty->sx - 1; 2415 } 2416 2417 /* No change. */ 2418 if (cx == thisx && cy == thisy) 2419 return; 2420 2421 /* Currently at the very end of the line - use absolute movement. */ 2422 if (thisx > tty->sx - 1) 2423 goto absolute; 2424 2425 /* Move to home position (0, 0). */ 2426 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2427 tty_putcode(tty, TTYC_HOME); 2428 goto out; 2429 } 2430 2431 /* Zero on the next line. */ 2432 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2433 (!tty_use_margin(tty) || tty->rleft == 0)) { 2434 tty_putc(tty, '\r'); 2435 tty_putc(tty, '\n'); 2436 goto out; 2437 } 2438 2439 /* Moving column or row. */ 2440 if (cy == thisy) { 2441 /* 2442 * Moving column only, row staying the same. 2443 */ 2444 2445 /* To left edge. */ 2446 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2447 tty_putc(tty, '\r'); 2448 goto out; 2449 } 2450 2451 /* One to the left. */ 2452 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2453 tty_putcode(tty, TTYC_CUB1); 2454 goto out; 2455 } 2456 2457 /* One to the right. */ 2458 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2459 tty_putcode(tty, TTYC_CUF1); 2460 goto out; 2461 } 2462 2463 /* Calculate difference. */ 2464 change = thisx - cx; /* +ve left, -ve right */ 2465 2466 /* 2467 * Use HPA if change is larger than absolute, otherwise move 2468 * the cursor with CUB/CUF. 2469 */ 2470 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2471 tty_putcode_i(tty, TTYC_HPA, cx); 2472 goto out; 2473 } else if (change > 0 && 2474 tty_term_has(term, TTYC_CUB) && 2475 !tty_use_margin(tty)) { 2476 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2477 tty_putcode(tty, TTYC_CUB1); 2478 tty_putcode(tty, TTYC_CUB1); 2479 goto out; 2480 } 2481 tty_putcode_i(tty, TTYC_CUB, change); 2482 goto out; 2483 } else if (change < 0 && 2484 tty_term_has(term, TTYC_CUF) && 2485 !tty_use_margin(tty)) { 2486 tty_putcode_i(tty, TTYC_CUF, -change); 2487 goto out; 2488 } 2489 } else if (cx == thisx) { 2490 /* 2491 * Moving row only, column staying the same. 2492 */ 2493 2494 /* One above. */ 2495 if (thisy != tty->rupper && 2496 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2497 tty_putcode(tty, TTYC_CUU1); 2498 goto out; 2499 } 2500 2501 /* One below. */ 2502 if (thisy != tty->rlower && 2503 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2504 tty_putcode(tty, TTYC_CUD1); 2505 goto out; 2506 } 2507 2508 /* Calculate difference. */ 2509 change = thisy - cy; /* +ve up, -ve down */ 2510 2511 /* 2512 * Try to use VPA if change is larger than absolute or if this 2513 * change would cross the scroll region, otherwise use CUU/CUD. 2514 */ 2515 if ((u_int) abs(change) > cy || 2516 (change < 0 && cy - change > tty->rlower) || 2517 (change > 0 && cy - change < tty->rupper)) { 2518 if (tty_term_has(term, TTYC_VPA)) { 2519 tty_putcode_i(tty, TTYC_VPA, cy); 2520 goto out; 2521 } 2522 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2523 tty_putcode_i(tty, TTYC_CUU, change); 2524 goto out; 2525 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2526 tty_putcode_i(tty, TTYC_CUD, -change); 2527 goto out; 2528 } 2529 } 2530 2531 absolute: 2532 /* Absolute movement. */ 2533 tty_putcode_ii(tty, TTYC_CUP, cy, cx); 2534 2535 out: 2536 tty->cx = cx; 2537 tty->cy = cy; 2538 } 2539 2540 static void 2541 tty_hyperlink(struct tty *tty, const struct grid_cell *gc, 2542 struct hyperlinks *hl) 2543 { 2544 const char *uri, *id; 2545 2546 if (gc->link == tty->cell.link) 2547 return; 2548 tty->cell.link = gc->link; 2549 2550 if (hl == NULL) 2551 return; 2552 2553 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id)) 2554 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2555 else 2556 tty_putcode_ss(tty, TTYC_HLS, id, uri); 2557 } 2558 2559 void 2560 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2561 const struct grid_cell *defaults, struct colour_palette *palette, 2562 struct hyperlinks *hl) 2563 { 2564 struct grid_cell *tc = &tty->cell, gc2; 2565 int changed; 2566 2567 /* Copy cell and update default colours. */ 2568 memcpy(&gc2, gc, sizeof gc2); 2569 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2570 if (gc2.fg == 8) 2571 gc2.fg = defaults->fg; 2572 if (gc2.bg == 8) 2573 gc2.bg = defaults->bg; 2574 } 2575 2576 /* Ignore cell if it is the same as the last one. */ 2577 if (gc2.attr == tty->last_cell.attr && 2578 gc2.fg == tty->last_cell.fg && 2579 gc2.bg == tty->last_cell.bg && 2580 gc2.us == tty->last_cell.us && 2581 gc2.link == tty->last_cell.link) 2582 return; 2583 2584 /* 2585 * If no setab, try to use the reverse attribute as a best-effort for a 2586 * non-default background. This is a bit of a hack but it doesn't do 2587 * any serious harm and makes a couple of applications happier. 2588 */ 2589 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2590 if (gc2.attr & GRID_ATTR_REVERSE) { 2591 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2592 gc2.attr &= ~GRID_ATTR_REVERSE; 2593 } else { 2594 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2595 gc2.attr |= GRID_ATTR_REVERSE; 2596 } 2597 } 2598 2599 /* Fix up the colours if necessary. */ 2600 tty_check_fg(tty, palette, &gc2); 2601 tty_check_bg(tty, palette, &gc2); 2602 tty_check_us(tty, palette, &gc2); 2603 2604 /* 2605 * If any bits are being cleared or the underline colour is now default, 2606 * reset everything. 2607 */ 2608 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2609 tty_reset(tty); 2610 2611 /* 2612 * Set the colours. This may call tty_reset() (so it comes next) and 2613 * may add to (NOT remove) the desired attributes. 2614 */ 2615 tty_colours(tty, &gc2); 2616 2617 /* Filter out attribute bits already set. */ 2618 changed = gc2.attr & ~tc->attr; 2619 tc->attr = gc2.attr; 2620 2621 /* Set the attributes. */ 2622 if (changed & GRID_ATTR_BRIGHT) 2623 tty_putcode(tty, TTYC_BOLD); 2624 if (changed & GRID_ATTR_DIM) 2625 tty_putcode(tty, TTYC_DIM); 2626 if (changed & GRID_ATTR_ITALICS) 2627 tty_set_italics(tty); 2628 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2629 if ((changed & GRID_ATTR_UNDERSCORE) || 2630 !tty_term_has(tty->term, TTYC_SMULX)) 2631 tty_putcode(tty, TTYC_SMUL); 2632 else if (changed & GRID_ATTR_UNDERSCORE_2) 2633 tty_putcode_i(tty, TTYC_SMULX, 2); 2634 else if (changed & GRID_ATTR_UNDERSCORE_3) 2635 tty_putcode_i(tty, TTYC_SMULX, 3); 2636 else if (changed & GRID_ATTR_UNDERSCORE_4) 2637 tty_putcode_i(tty, TTYC_SMULX, 4); 2638 else if (changed & GRID_ATTR_UNDERSCORE_5) 2639 tty_putcode_i(tty, TTYC_SMULX, 5); 2640 } 2641 if (changed & GRID_ATTR_BLINK) 2642 tty_putcode(tty, TTYC_BLINK); 2643 if (changed & GRID_ATTR_REVERSE) { 2644 if (tty_term_has(tty->term, TTYC_REV)) 2645 tty_putcode(tty, TTYC_REV); 2646 else if (tty_term_has(tty->term, TTYC_SMSO)) 2647 tty_putcode(tty, TTYC_SMSO); 2648 } 2649 if (changed & GRID_ATTR_HIDDEN) 2650 tty_putcode(tty, TTYC_INVIS); 2651 if (changed & GRID_ATTR_STRIKETHROUGH) 2652 tty_putcode(tty, TTYC_SMXX); 2653 if (changed & GRID_ATTR_OVERLINE) 2654 tty_putcode(tty, TTYC_SMOL); 2655 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2656 tty_putcode(tty, TTYC_SMACS); 2657 2658 /* Set hyperlink if any. */ 2659 tty_hyperlink(tty, gc, hl); 2660 2661 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2662 } 2663 2664 static void 2665 tty_colours(struct tty *tty, const struct grid_cell *gc) 2666 { 2667 struct grid_cell *tc = &tty->cell; 2668 2669 /* No changes? Nothing is necessary. */ 2670 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2671 return; 2672 2673 /* 2674 * Is either the default colour? This is handled specially because the 2675 * best solution might be to reset both colours to default, in which 2676 * case if only one is default need to fall onward to set the other 2677 * colour. 2678 */ 2679 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2680 /* 2681 * If don't have AX, send sgr0. This resets both colours to default. 2682 * Otherwise, try to set the default colour only as needed. 2683 */ 2684 if (!tty_term_flag(tty->term, TTYC_AX)) 2685 tty_reset(tty); 2686 else { 2687 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2688 tty_puts(tty, "\033[39m"); 2689 tc->fg = gc->fg; 2690 } 2691 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2692 tty_puts(tty, "\033[49m"); 2693 tc->bg = gc->bg; 2694 } 2695 } 2696 } 2697 2698 /* Set the foreground colour. */ 2699 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2700 tty_colours_fg(tty, gc); 2701 2702 /* 2703 * Set the background colour. This must come after the foreground as 2704 * tty_colours_fg() can call tty_reset(). 2705 */ 2706 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2707 tty_colours_bg(tty, gc); 2708 2709 /* Set the underscore colour. */ 2710 if (gc->us != tc->us) 2711 tty_colours_us(tty, gc); 2712 } 2713 2714 static void 2715 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2716 struct grid_cell *gc) 2717 { 2718 u_char r, g, b; 2719 u_int colours; 2720 int c; 2721 2722 /* 2723 * Perform substitution if this pane has a palette. If the bright 2724 * attribute is set and Nobr is not present, use the bright entry in 2725 * the palette by changing to the aixterm colour 2726 */ 2727 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2728 c = gc->fg; 2729 if (c < 8 && 2730 gc->attr & GRID_ATTR_BRIGHT && 2731 !tty_term_has(tty->term, TTYC_NOBR)) 2732 c += 90; 2733 if ((c = colour_palette_get(palette, c)) != -1) 2734 gc->fg = c; 2735 } 2736 2737 /* Is this a 24-bit colour? */ 2738 if (gc->fg & COLOUR_FLAG_RGB) { 2739 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2740 if (tty->term->flags & TERM_RGBCOLOURS) 2741 return; 2742 colour_split_rgb(gc->fg, &r, &g, &b); 2743 gc->fg = colour_find_rgb(r, g, b); 2744 } 2745 2746 /* How many colours does this terminal have? */ 2747 if (tty->term->flags & TERM_256COLOURS) 2748 colours = 256; 2749 else 2750 colours = tty_term_number(tty->term, TTYC_COLORS); 2751 2752 /* Is this a 256-colour colour? */ 2753 if (gc->fg & COLOUR_FLAG_256) { 2754 /* And not a 256 colour mode? */ 2755 if (colours < 256) { 2756 gc->fg = colour_256to16(gc->fg); 2757 if (gc->fg & 8) { 2758 gc->fg &= 7; 2759 if (colours >= 16) 2760 gc->fg += 90; 2761 else if (gc->fg == 0 && gc->bg == 0) 2762 gc->fg = 7; 2763 } 2764 } 2765 return; 2766 } 2767 2768 /* Is this an aixterm colour? */ 2769 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2770 gc->fg -= 90; 2771 gc->attr |= GRID_ATTR_BRIGHT; 2772 } 2773 } 2774 2775 static void 2776 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2777 struct grid_cell *gc) 2778 { 2779 u_char r, g, b; 2780 u_int colours; 2781 int c; 2782 2783 /* Perform substitution if this pane has a palette. */ 2784 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2785 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2786 gc->bg = c; 2787 } 2788 2789 /* Is this a 24-bit colour? */ 2790 if (gc->bg & COLOUR_FLAG_RGB) { 2791 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2792 if (tty->term->flags & TERM_RGBCOLOURS) 2793 return; 2794 colour_split_rgb(gc->bg, &r, &g, &b); 2795 gc->bg = colour_find_rgb(r, g, b); 2796 } 2797 2798 /* How many colours does this terminal have? */ 2799 if (tty->term->flags & TERM_256COLOURS) 2800 colours = 256; 2801 else 2802 colours = tty_term_number(tty->term, TTYC_COLORS); 2803 2804 /* Is this a 256-colour colour? */ 2805 if (gc->bg & COLOUR_FLAG_256) { 2806 /* 2807 * And not a 256 colour mode? Translate to 16-colour 2808 * palette. Bold background doesn't exist portably, so just 2809 * discard the bold bit if set. 2810 */ 2811 if (colours < 256) { 2812 gc->bg = colour_256to16(gc->bg); 2813 if (gc->bg & 8) { 2814 gc->bg &= 7; 2815 if (colours >= 16) 2816 gc->bg += 90; 2817 } 2818 } 2819 return; 2820 } 2821 2822 /* Is this an aixterm colour? */ 2823 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2824 gc->bg -= 90; 2825 } 2826 2827 static void 2828 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2829 struct grid_cell *gc) 2830 { 2831 int c; 2832 2833 /* Perform substitution if this pane has a palette. */ 2834 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2835 if ((c = colour_palette_get(palette, gc->us)) != -1) 2836 gc->us = c; 2837 } 2838 2839 /* Convert underscore colour if only RGB can be supported. */ 2840 if (!tty_term_has(tty->term, TTYC_SETULC1)) { 2841 if ((c = colour_force_rgb (gc->us)) == -1) 2842 gc->us = 8; 2843 else 2844 gc->us = c; 2845 } 2846 } 2847 2848 static void 2849 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2850 { 2851 struct grid_cell *tc = &tty->cell; 2852 char s[32]; 2853 2854 /* 2855 * If the current colour is an aixterm bright colour and the new is not, 2856 * reset because some terminals do not clear bright correctly. 2857 */ 2858 if (tty->cell.fg >= 90 && 2859 tty->cell.bg <= 97 && 2860 (gc->fg < 90 || gc->fg > 97)) 2861 tty_reset(tty); 2862 2863 /* Is this a 24-bit or 256-colour colour? */ 2864 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2865 if (tty_try_colour(tty, gc->fg, "38") == 0) 2866 goto save; 2867 /* Should not get here, already converted in tty_check_fg. */ 2868 return; 2869 } 2870 2871 /* Is this an aixterm bright colour? */ 2872 if (gc->fg >= 90 && gc->fg <= 97) { 2873 if (tty->term->flags & TERM_256COLOURS) { 2874 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2875 tty_puts(tty, s); 2876 } else 2877 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8); 2878 goto save; 2879 } 2880 2881 /* Otherwise set the foreground colour. */ 2882 tty_putcode_i(tty, TTYC_SETAF, gc->fg); 2883 2884 save: 2885 /* Save the new values in the terminal current cell. */ 2886 tc->fg = gc->fg; 2887 } 2888 2889 static void 2890 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2891 { 2892 struct grid_cell *tc = &tty->cell; 2893 char s[32]; 2894 2895 /* Is this a 24-bit or 256-colour colour? */ 2896 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2897 if (tty_try_colour(tty, gc->bg, "48") == 0) 2898 goto save; 2899 /* Should not get here, already converted in tty_check_bg. */ 2900 return; 2901 } 2902 2903 /* Is this an aixterm bright colour? */ 2904 if (gc->bg >= 90 && gc->bg <= 97) { 2905 if (tty->term->flags & TERM_256COLOURS) { 2906 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2907 tty_puts(tty, s); 2908 } else 2909 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8); 2910 goto save; 2911 } 2912 2913 /* Otherwise set the background colour. */ 2914 tty_putcode_i(tty, TTYC_SETAB, gc->bg); 2915 2916 save: 2917 /* Save the new values in the terminal current cell. */ 2918 tc->bg = gc->bg; 2919 } 2920 2921 static void 2922 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2923 { 2924 struct grid_cell *tc = &tty->cell; 2925 u_int c; 2926 u_char r, g, b; 2927 2928 /* Clear underline colour. */ 2929 if (COLOUR_DEFAULT(gc->us)) { 2930 tty_putcode(tty, TTYC_OL); 2931 goto save; 2932 } 2933 2934 /* 2935 * If this is not an RGB colour, use Setulc1 if it exists, otherwise 2936 * convert. 2937 */ 2938 if (~gc->us & COLOUR_FLAG_RGB) { 2939 c = gc->us; 2940 if ((~c & COLOUR_FLAG_256) && (c >= 90 && c <= 97)) 2941 c -= 82; 2942 tty_putcode_i(tty, TTYC_SETULC1, c & ~COLOUR_FLAG_256); 2943 return; 2944 } 2945 2946 /* 2947 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2948 * capability format. Calculate the colour value. 2949 */ 2950 colour_split_rgb(gc->us, &r, &g, &b); 2951 c = (65536 * r) + (256 * g) + b; 2952 2953 /* 2954 * Write the colour. Only use setal if the RGB flag is set because the 2955 * non-RGB version may be wrong. 2956 */ 2957 if (tty_term_has(tty->term, TTYC_SETULC)) 2958 tty_putcode_i(tty, TTYC_SETULC, c); 2959 else if (tty_term_has(tty->term, TTYC_SETAL) && 2960 tty_term_has(tty->term, TTYC_RGB)) 2961 tty_putcode_i(tty, TTYC_SETAL, c); 2962 2963 save: 2964 /* Save the new values in the terminal current cell. */ 2965 tc->us = gc->us; 2966 } 2967 2968 static int 2969 tty_try_colour(struct tty *tty, int colour, const char *type) 2970 { 2971 u_char r, g, b; 2972 2973 if (colour & COLOUR_FLAG_256) { 2974 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2975 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff); 2976 else if (tty_term_has(tty->term, TTYC_SETAB)) 2977 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff); 2978 return (0); 2979 } 2980 2981 if (colour & COLOUR_FLAG_RGB) { 2982 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2983 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2984 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b); 2985 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2986 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b); 2987 return (0); 2988 } 2989 2990 return (-1); 2991 } 2992 2993 static void 2994 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2995 { 2996 memcpy(gc, &grid_default_cell, sizeof *gc); 2997 gc->fg = wp->palette.fg; 2998 gc->bg = wp->palette.bg; 2999 } 3000 3001 void 3002 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 3003 { 3004 struct options *oo = wp->options; 3005 struct format_tree *ft; 3006 3007 memcpy(gc, &grid_default_cell, sizeof *gc); 3008 3009 if (wp->flags & PANE_STYLECHANGED) { 3010 log_debug("%%%u: style changed", wp->id); 3011 wp->flags &= ~PANE_STYLECHANGED; 3012 3013 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 3014 FORMAT_NOJOBS); 3015 format_defaults(ft, NULL, NULL, NULL, wp); 3016 tty_window_default_style(&wp->cached_active_gc, wp); 3017 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 3018 tty_window_default_style(&wp->cached_gc, wp); 3019 style_add(&wp->cached_gc, oo, "window-style", ft); 3020 format_free(ft); 3021 } 3022 3023 if (gc->fg == 8) { 3024 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 3025 gc->fg = wp->cached_active_gc.fg; 3026 else 3027 gc->fg = wp->cached_gc.fg; 3028 } 3029 3030 if (gc->bg == 8) { 3031 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 3032 gc->bg = wp->cached_active_gc.bg; 3033 else 3034 gc->bg = wp->cached_gc.bg; 3035 } 3036 } 3037 3038 static void 3039 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 3040 struct colour_palette *palette, u_int bg, struct hyperlinks *hl) 3041 { 3042 struct grid_cell gc; 3043 3044 memcpy(&gc, &grid_default_cell, sizeof gc); 3045 gc.bg = bg; 3046 tty_attributes(tty, &gc, defaults, palette, hl); 3047 } 3048 3049 static void 3050 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data) 3051 { 3052 struct tty *tty = data; 3053 struct client *c = tty->client; 3054 3055 c->flags &= ~CLIENT_CLIPBOARDBUFFER; 3056 free(c->clipboard_panes); 3057 c->clipboard_panes = NULL; 3058 c->clipboard_npanes = 0; 3059 3060 tty->flags &= ~TTY_OSC52QUERY; 3061 } 3062 3063 void 3064 tty_clipboard_query(struct tty *tty) 3065 { 3066 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 3067 3068 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY)) 3069 return; 3070 tty_putcode_ss(tty, TTYC_MS, "", "?"); 3071 3072 tty->flags |= TTY_OSC52QUERY; 3073 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty); 3074 evtimer_add(&tty->clipboard_timer, &tv); 3075 } 3076