1/* $OpenBSD: tty.c,v 1.436 2024/05/14 10:11:09 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 36static int tty_log_fd = -1; 37 38static void tty_set_italics(struct tty *); 39static int tty_try_colour(struct tty *, int, const char *); 40static void tty_force_cursor_colour(struct tty *, int); 41static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int, 42 u_int); 43static void tty_cursor_pane_unless_wrap(struct tty *, 44 const struct tty_ctx *, u_int, u_int); 45static void tty_invalidate(struct tty *); 46static void tty_colours(struct tty *, const struct grid_cell *); 47static void tty_check_fg(struct tty *, struct colour_palette *, 48 struct grid_cell *); 49static void tty_check_bg(struct tty *, struct colour_palette *, 50 struct grid_cell *); 51static void tty_check_us(struct tty *, struct colour_palette *, 52 struct grid_cell *); 53static void tty_colours_fg(struct tty *, const struct grid_cell *); 54static void tty_colours_bg(struct tty *, const struct grid_cell *); 55static void tty_colours_us(struct tty *, const struct grid_cell *); 56 57static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int, 58 u_int); 59static void tty_region(struct tty *, u_int, u_int); 60static void tty_margin_pane(struct tty *, const struct tty_ctx *); 61static void tty_margin(struct tty *, u_int, u_int); 62static int tty_large_region(struct tty *, const struct tty_ctx *); 63static int tty_fake_bce(const struct tty *, const struct grid_cell *, 64 u_int); 65static void tty_redraw_region(struct tty *, const struct tty_ctx *); 66static void tty_emulate_repeat(struct tty *, enum tty_code_code, 67 enum tty_code_code, u_int); 68static void tty_repeat_space(struct tty *, u_int); 69static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int); 70static void tty_default_attributes(struct tty *, const struct grid_cell *, 71 struct colour_palette *, u_int, struct hyperlinks *); 72static int tty_check_overlay(struct tty *, u_int, u_int); 73static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int, 74 struct overlay_ranges *); 75 76#define tty_use_margin(tty) \ 77 (tty->term->flags & TERM_DECSLRM) 78#define tty_full_width(tty, ctx) \ 79 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx) 80 81#define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */) 82#define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8) 83#define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8) 84 85#define TTY_QUERY_TIMEOUT 5 86#define TTY_REQUEST_LIMIT 30 87 88void 89tty_create_log(void) 90{ 91 char name[64]; 92 93 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid()); 94 95 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644); 96 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1) 97 fatal("fcntl failed"); 98} 99 100int 101tty_init(struct tty *tty, struct client *c) 102{ 103 if (!isatty(c->fd)) 104 return (-1); 105 106 memset(tty, 0, sizeof *tty); 107 tty->client = c; 108 109 tty->cstyle = SCREEN_CURSOR_DEFAULT; 110 tty->ccolour = -1; 111 tty->fg = tty->bg = -1; 112 113 if (tcgetattr(c->fd, &tty->tio) != 0) 114 return (-1); 115 return (0); 116} 117 118void 119tty_resize(struct tty *tty) 120{ 121 struct client *c = tty->client; 122 struct winsize ws; 123 u_int sx, sy, xpixel, ypixel; 124 125 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) { 126 sx = ws.ws_col; 127 if (sx == 0) { 128 sx = 80; 129 xpixel = 0; 130 } else 131 xpixel = ws.ws_xpixel / sx; 132 sy = ws.ws_row; 133 if (sy == 0) { 134 sy = 24; 135 ypixel = 0; 136 } else 137 ypixel = ws.ws_ypixel / sy; 138 } else { 139 sx = 80; 140 sy = 24; 141 xpixel = 0; 142 ypixel = 0; 143 } 144 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy, 145 xpixel, ypixel); 146 tty_set_size(tty, sx, sy, xpixel, ypixel); 147 tty_invalidate(tty); 148} 149 150void 151tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel) 152{ 153 tty->sx = sx; 154 tty->sy = sy; 155 tty->xpixel = xpixel; 156 tty->ypixel = ypixel; 157} 158 159static void 160tty_read_callback(__unused int fd, __unused short events, void *data) 161{ 162 struct tty *tty = data; 163 struct client *c = tty->client; 164 const char *name = c->name; 165 size_t size = EVBUFFER_LENGTH(tty->in); 166 int nread; 167 168 nread = evbuffer_read(tty->in, c->fd, -1); 169 if (nread == 0 || nread == -1) { 170 if (nread == 0) 171 log_debug("%s: read closed", name); 172 else 173 log_debug("%s: read error: %s", name, strerror(errno)); 174 event_del(&tty->event_in); 175 server_client_lost(tty->client); 176 return; 177 } 178 log_debug("%s: read %d bytes (already %zu)", name, nread, size); 179 180 while (tty_keys_next(tty)) 181 ; 182} 183 184static void 185tty_timer_callback(__unused int fd, __unused short events, void *data) 186{ 187 struct tty *tty = data; 188 struct client *c = tty->client; 189 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 190 191 log_debug("%s: %zu discarded", c->name, tty->discarded); 192 193 c->flags |= CLIENT_ALLREDRAWFLAGS; 194 c->discarded += tty->discarded; 195 196 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 197 tty->flags &= ~TTY_BLOCK; 198 tty_invalidate(tty); 199 return; 200 } 201 tty->discarded = 0; 202 evtimer_add(&tty->timer, &tv); 203} 204 205static int 206tty_block_maybe(struct tty *tty) 207{ 208 struct client *c = tty->client; 209 size_t size = EVBUFFER_LENGTH(tty->out); 210 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 211 212 if (size == 0) 213 tty->flags &= ~TTY_NOBLOCK; 214 else if (tty->flags & TTY_NOBLOCK) 215 return (0); 216 217 if (size < TTY_BLOCK_START(tty)) 218 return (0); 219 220 if (tty->flags & TTY_BLOCK) 221 return (1); 222 tty->flags |= TTY_BLOCK; 223 224 log_debug("%s: can't keep up, %zu discarded", c->name, size); 225 226 evbuffer_drain(tty->out, size); 227 c->discarded += size; 228 229 tty->discarded = 0; 230 evtimer_add(&tty->timer, &tv); 231 return (1); 232} 233 234static void 235tty_write_callback(__unused int fd, __unused short events, void *data) 236{ 237 struct tty *tty = data; 238 struct client *c = tty->client; 239 size_t size = EVBUFFER_LENGTH(tty->out); 240 int nwrite; 241 242 nwrite = evbuffer_write(tty->out, c->fd); 243 if (nwrite == -1) 244 return; 245 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 246 247 if (c->redraw > 0) { 248 if ((size_t)nwrite >= c->redraw) 249 c->redraw = 0; 250 else 251 c->redraw -= nwrite; 252 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 253 c->redraw); 254 } else if (tty_block_maybe(tty)) 255 return; 256 257 if (EVBUFFER_LENGTH(tty->out) != 0) 258 event_add(&tty->event_out, NULL); 259} 260 261int 262tty_open(struct tty *tty, char **cause) 263{ 264 struct client *c = tty->client; 265 266 tty->term = tty_term_create(tty, c->term_name, c->term_caps, 267 c->term_ncaps, &c->term_features, cause); 268 if (tty->term == NULL) { 269 tty_close(tty); 270 return (-1); 271 } 272 tty->flags |= TTY_OPENED; 273 274 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 275 276 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ, 277 tty_read_callback, tty); 278 tty->in = evbuffer_new(); 279 if (tty->in == NULL) 280 fatal("out of memory"); 281 282 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty); 283 tty->out = evbuffer_new(); 284 if (tty->out == NULL) 285 fatal("out of memory"); 286 287 evtimer_set(&tty->timer, tty_timer_callback, tty); 288 289 tty_start_tty(tty); 290 tty_keys_build(tty); 291 292 return (0); 293} 294 295static void 296tty_start_timer_callback(__unused int fd, __unused short events, void *data) 297{ 298 struct tty *tty = data; 299 struct client *c = tty->client; 300 301 log_debug("%s: start timer fired", c->name); 302 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0) 303 tty_update_features(tty); 304 tty->flags |= TTY_ALL_REQUEST_FLAGS; 305} 306 307void 308tty_start_tty(struct tty *tty) 309{ 310 struct client *c = tty->client; 311 struct termios tio; 312 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 313 314 setblocking(c->fd, 0); 315 event_add(&tty->event_in, NULL); 316 317 memcpy(&tio, &tty->tio, sizeof tio); 318 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 319 tio.c_iflag |= IGNBRK; 320 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 321 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT| 322 ECHOKE|ISIG); 323 tio.c_cc[VMIN] = 1; 324 tio.c_cc[VTIME] = 0; 325 if (tcsetattr(c->fd, TCSANOW, &tio) == 0) 326 tcflush(c->fd, TCOFLUSH); 327 328 tty_putcode(tty, TTYC_SMCUP); 329 330 tty_putcode(tty, TTYC_SMKX); 331 tty_putcode(tty, TTYC_CLEAR); 332 333 if (tty_acs_needed(tty)) { 334 log_debug("%s: using capabilities for ACS", c->name); 335 tty_putcode(tty, TTYC_ENACS); 336 } else 337 log_debug("%s: using UTF-8 for ACS", c->name); 338 339 tty_putcode(tty, TTYC_CNORM); 340 if (tty_term_has(tty->term, TTYC_KMOUS)) { 341 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l"); 342 tty_puts(tty, "\033[?1006l\033[?1005l"); 343 } 344 if (tty_term_has(tty->term, TTYC_ENBP)) 345 tty_putcode(tty, TTYC_ENBP); 346 347 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 348 evtimer_add(&tty->start_timer, &tv); 349 350 tty->flags |= TTY_STARTED; 351 tty_invalidate(tty); 352 353 if (tty->ccolour != -1) 354 tty_force_cursor_colour(tty, -1); 355 356 tty->mouse_drag_flag = 0; 357 tty->mouse_drag_update = NULL; 358 tty->mouse_drag_release = NULL; 359} 360 361void 362tty_send_requests(struct tty *tty) 363{ 364 if (~tty->flags & TTY_STARTED) 365 return; 366 367 if (tty->term->flags & TERM_VT100LIKE) { 368 if (~tty->term->flags & TTY_HAVEDA) 369 tty_puts(tty, "\033[c"); 370 if (~tty->flags & TTY_HAVEDA2) 371 tty_puts(tty, "\033[>c"); 372 if (~tty->flags & TTY_HAVEXDA) 373 tty_puts(tty, "\033[>q"); 374 tty_puts(tty, "\033]10;?\033\\"); 375 tty_puts(tty, "\033]11;?\033\\"); 376 } else 377 tty->flags |= TTY_ALL_REQUEST_FLAGS; 378 tty->last_requests = time(NULL); 379} 380 381void 382tty_repeat_requests(struct tty *tty) 383{ 384 time_t t = time(NULL); 385 386 if (~tty->flags & TTY_STARTED) 387 return; 388 389 if (t - tty->last_requests <= TTY_REQUEST_LIMIT) 390 return; 391 tty->last_requests = t; 392 393 if (tty->term->flags & TERM_VT100LIKE) { 394 tty_puts(tty, "\033]10;?\033\\"); 395 tty_puts(tty, "\033]11;?\033\\"); 396 } 397} 398 399void 400tty_stop_tty(struct tty *tty) 401{ 402 struct client *c = tty->client; 403 struct winsize ws; 404 405 if (!(tty->flags & TTY_STARTED)) 406 return; 407 tty->flags &= ~TTY_STARTED; 408 409 evtimer_del(&tty->start_timer); 410 411 event_del(&tty->timer); 412 tty->flags &= ~TTY_BLOCK; 413 414 event_del(&tty->event_in); 415 event_del(&tty->event_out); 416 417 /* 418 * Be flexible about error handling and try not kill the server just 419 * because the fd is invalid. Things like ssh -t can easily leave us 420 * with a dead tty. 421 */ 422 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 423 return; 424 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 425 return; 426 427 tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 428 if (tty_acs_needed(tty)) 429 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 430 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 431 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 432 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 433 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 434 if (tty_term_has(tty->term, TTYC_SE)) 435 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 436 else if (tty_term_has(tty->term, TTYC_SS)) 437 tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0)); 438 } 439 if (tty->ccolour != -1) 440 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 441 442 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 443 if (tty_term_has(tty->term, TTYC_KMOUS)) { 444 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 445 tty_raw(tty, "\033[?1006l\033[?1005l"); 446 } 447 if (tty_term_has(tty->term, TTYC_DSBP)) 448 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 449 450 if (tty->term->flags & TERM_VT100LIKE) 451 tty_raw(tty, "\033[?7727l"); 452 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 453 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 454 455 if (tty_use_margin(tty)) 456 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 457 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 458 459 setblocking(c->fd, 1); 460} 461 462void 463tty_close(struct tty *tty) 464{ 465 if (event_initialized(&tty->key_timer)) 466 evtimer_del(&tty->key_timer); 467 tty_stop_tty(tty); 468 469 if (tty->flags & TTY_OPENED) { 470 evbuffer_free(tty->in); 471 event_del(&tty->event_in); 472 evbuffer_free(tty->out); 473 event_del(&tty->event_out); 474 475 tty_term_free(tty->term); 476 tty_keys_free(tty); 477 478 tty->flags &= ~TTY_OPENED; 479 } 480} 481 482void 483tty_free(struct tty *tty) 484{ 485 tty_close(tty); 486} 487 488void 489tty_update_features(struct tty *tty) 490{ 491 struct client *c = tty->client; 492 493 if (tty_apply_features(tty->term, c->term_features)) 494 tty_term_apply_overrides(tty->term); 495 496 if (tty_use_margin(tty)) 497 tty_putcode(tty, TTYC_ENMG); 498 if (options_get_number(global_options, "extended-keys")) 499 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 500 if (options_get_number(global_options, "focus-events")) 501 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 502 if (tty->term->flags & TERM_VT100LIKE) 503 tty_puts(tty, "\033[?7727h"); 504 505 /* 506 * Features might have changed since the first draw during attach. For 507 * example, this happens when DA responses are received. 508 */ 509 server_redraw_client(c); 510 511 tty_invalidate(tty); 512} 513 514void 515tty_raw(struct tty *tty, const char *s) 516{ 517 struct client *c = tty->client; 518 ssize_t n, slen; 519 u_int i; 520 521 slen = strlen(s); 522 for (i = 0; i < 5; i++) { 523 n = write(c->fd, s, slen); 524 if (n >= 0) { 525 s += n; 526 slen -= n; 527 if (slen == 0) 528 break; 529 } else if (n == -1 && errno != EAGAIN) 530 break; 531 usleep(100); 532 } 533} 534 535void 536tty_putcode(struct tty *tty, enum tty_code_code code) 537{ 538 tty_puts(tty, tty_term_string(tty->term, code)); 539} 540 541void 542tty_putcode_i(struct tty *tty, enum tty_code_code code, int a) 543{ 544 if (a < 0) 545 return; 546 tty_puts(tty, tty_term_string_i(tty->term, code, a)); 547} 548 549void 550tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b) 551{ 552 if (a < 0 || b < 0) 553 return; 554 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b)); 555} 556 557void 558tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c) 559{ 560 if (a < 0 || b < 0 || c < 0) 561 return; 562 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c)); 563} 564 565void 566tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a) 567{ 568 if (a != NULL) 569 tty_puts(tty, tty_term_string_s(tty->term, code, a)); 570} 571 572void 573tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a, 574 const char *b) 575{ 576 if (a != NULL && b != NULL) 577 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b)); 578} 579 580static void 581tty_add(struct tty *tty, const char *buf, size_t len) 582{ 583 struct client *c = tty->client; 584 585 if (tty->flags & TTY_BLOCK) { 586 tty->discarded += len; 587 return; 588 } 589 590 evbuffer_add(tty->out, buf, len); 591 log_debug("%s: %.*s", c->name, (int)len, buf); 592 c->written += len; 593 594 if (tty_log_fd != -1) 595 write(tty_log_fd, buf, len); 596 if (tty->flags & TTY_STARTED) 597 event_add(&tty->event_out, NULL); 598} 599 600void 601tty_puts(struct tty *tty, const char *s) 602{ 603 if (*s != '\0') 604 tty_add(tty, s, strlen(s)); 605} 606 607void 608tty_putc(struct tty *tty, u_char ch) 609{ 610 const char *acs; 611 612 if ((tty->term->flags & TERM_NOAM) && 613 ch >= 0x20 && ch != 0x7f && 614 tty->cy == tty->sy - 1 && 615 tty->cx + 1 >= tty->sx) 616 return; 617 618 if (tty->cell.attr & GRID_ATTR_CHARSET) { 619 acs = tty_acs_get(tty, ch); 620 if (acs != NULL) 621 tty_add(tty, acs, strlen(acs)); 622 else 623 tty_add(tty, &ch, 1); 624 } else 625 tty_add(tty, &ch, 1); 626 627 if (ch >= 0x20 && ch != 0x7f) { 628 if (tty->cx >= tty->sx) { 629 tty->cx = 1; 630 if (tty->cy != tty->rlower) 631 tty->cy++; 632 633 /* 634 * On !am terminals, force the cursor position to where 635 * we think it should be after a line wrap - this means 636 * it works on sensible terminals as well. 637 */ 638 if (tty->term->flags & TERM_NOAM) 639 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx); 640 } else 641 tty->cx++; 642 } 643} 644 645void 646tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 647{ 648 if ((tty->term->flags & TERM_NOAM) && 649 tty->cy == tty->sy - 1 && 650 tty->cx + len >= tty->sx) 651 len = tty->sx - tty->cx - 1; 652 653 tty_add(tty, buf, len); 654 if (tty->cx + width > tty->sx) { 655 tty->cx = (tty->cx + width) - tty->sx; 656 if (tty->cx <= tty->sx) 657 tty->cy++; 658 else 659 tty->cx = tty->cy = UINT_MAX; 660 } else 661 tty->cx += width; 662} 663 664static void 665tty_set_italics(struct tty *tty) 666{ 667 const char *s; 668 669 if (tty_term_has(tty->term, TTYC_SITM)) { 670 s = options_get_string(global_options, "default-terminal"); 671 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 672 tty_putcode(tty, TTYC_SITM); 673 return; 674 } 675 } 676 tty_putcode(tty, TTYC_SMSO); 677} 678 679void 680tty_set_title(struct tty *tty, const char *title) 681{ 682 if (!tty_term_has(tty->term, TTYC_TSL) || 683 !tty_term_has(tty->term, TTYC_FSL)) 684 return; 685 686 tty_putcode(tty, TTYC_TSL); 687 tty_puts(tty, title); 688 tty_putcode(tty, TTYC_FSL); 689} 690 691void 692tty_set_path(struct tty *tty, const char *title) 693{ 694 if (!tty_term_has(tty->term, TTYC_SWD) || 695 !tty_term_has(tty->term, TTYC_FSL)) 696 return; 697 698 tty_putcode(tty, TTYC_SWD); 699 tty_puts(tty, title); 700 tty_putcode(tty, TTYC_FSL); 701} 702 703static void 704tty_force_cursor_colour(struct tty *tty, int c) 705{ 706 u_char r, g, b; 707 char s[13]; 708 709 if (c != -1) 710 c = colour_force_rgb(c); 711 if (c == tty->ccolour) 712 return; 713 if (c == -1) 714 tty_putcode(tty, TTYC_CR); 715 else { 716 colour_split_rgb(c, &r, &g, &b); 717 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b); 718 tty_putcode_s(tty, TTYC_CS, s); 719 } 720 tty->ccolour = c; 721} 722 723static int 724tty_update_cursor(struct tty *tty, int mode, struct screen *s) 725{ 726 enum screen_cursor_style cstyle; 727 int ccolour, changed, cmode = mode; 728 729 /* Set cursor colour if changed. */ 730 if (s != NULL) { 731 ccolour = s->ccolour; 732 if (s->ccolour == -1) 733 ccolour = s->default_ccolour; 734 tty_force_cursor_colour(tty, ccolour); 735 } 736 737 /* If cursor is off, set as invisible. */ 738 if (~cmode & MODE_CURSOR) { 739 if (tty->mode & MODE_CURSOR) 740 tty_putcode(tty, TTYC_CIVIS); 741 return (cmode); 742 } 743 744 /* Check if blinking or very visible flag changed or style changed. */ 745 if (s == NULL) 746 cstyle = tty->cstyle; 747 else { 748 cstyle = s->cstyle; 749 if (cstyle == SCREEN_CURSOR_DEFAULT) { 750 if (~cmode & MODE_CURSOR_BLINKING_SET) { 751 if (s->default_mode & MODE_CURSOR_BLINKING) 752 cmode |= MODE_CURSOR_BLINKING; 753 else 754 cmode &= ~MODE_CURSOR_BLINKING; 755 } 756 cstyle = s->default_cstyle; 757 } 758 } 759 760 /* If nothing changed, do nothing. */ 761 changed = cmode ^ tty->mode; 762 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 763 return (cmode); 764 765 /* 766 * Set cursor style. If an explicit style has been set with DECSCUSR, 767 * set it if supported, otherwise send cvvis for blinking styles. 768 * 769 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 770 * if either the blinking or very visible flags are set. 771 */ 772 tty_putcode(tty, TTYC_CNORM); 773 switch (cstyle) { 774 case SCREEN_CURSOR_DEFAULT: 775 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 776 if (tty_term_has(tty->term, TTYC_SE)) 777 tty_putcode(tty, TTYC_SE); 778 else 779 tty_putcode_i(tty, TTYC_SS, 0); 780 } 781 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 782 tty_putcode(tty, TTYC_CVVIS); 783 break; 784 case SCREEN_CURSOR_BLOCK: 785 if (tty_term_has(tty->term, TTYC_SS)) { 786 if (cmode & MODE_CURSOR_BLINKING) 787 tty_putcode_i(tty, TTYC_SS, 1); 788 else 789 tty_putcode_i(tty, TTYC_SS, 2); 790 } else if (cmode & MODE_CURSOR_BLINKING) 791 tty_putcode(tty, TTYC_CVVIS); 792 break; 793 case SCREEN_CURSOR_UNDERLINE: 794 if (tty_term_has(tty->term, TTYC_SS)) { 795 if (cmode & MODE_CURSOR_BLINKING) 796 tty_putcode_i(tty, TTYC_SS, 3); 797 else 798 tty_putcode_i(tty, TTYC_SS, 4); 799 } else if (cmode & MODE_CURSOR_BLINKING) 800 tty_putcode(tty, TTYC_CVVIS); 801 break; 802 case SCREEN_CURSOR_BAR: 803 if (tty_term_has(tty->term, TTYC_SS)) { 804 if (cmode & MODE_CURSOR_BLINKING) 805 tty_putcode_i(tty, TTYC_SS, 5); 806 else 807 tty_putcode_i(tty, TTYC_SS, 6); 808 } else if (cmode & MODE_CURSOR_BLINKING) 809 tty_putcode(tty, TTYC_CVVIS); 810 break; 811 } 812 tty->cstyle = cstyle; 813 return (cmode); 814 } 815 816void 817tty_update_mode(struct tty *tty, int mode, struct screen *s) 818{ 819 struct tty_term *term = tty->term; 820 struct client *c = tty->client; 821 int changed; 822 823 if (tty->flags & TTY_NOCURSOR) 824 mode &= ~MODE_CURSOR; 825 826 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING) 827 mode |= MODE_CURSOR_BLINKING; 828 else 829 mode &= ~MODE_CURSOR_BLINKING; 830 831 changed = mode ^ tty->mode; 832 if (log_get_level() != 0 && changed != 0) { 833 log_debug("%s: current mode %s", c->name, 834 screen_mode_to_string(tty->mode)); 835 log_debug("%s: setting mode %s", c->name, 836 screen_mode_to_string(mode)); 837 } 838 839 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) { 840 /* 841 * If the mouse modes have changed, clear then all and apply 842 * again. There are differences in how terminals track the 843 * various bits. 844 */ 845 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l"); 846 if (mode & ALL_MOUSE_MODES) 847 tty_puts(tty, "\033[?1006h"); 848 if (mode & MODE_MOUSE_ALL) 849 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h"); 850 else if (mode & MODE_MOUSE_BUTTON) 851 tty_puts(tty, "\033[?1000h\033[?1002h"); 852 else if (mode & MODE_MOUSE_STANDARD) 853 tty_puts(tty, "\033[?1000h"); 854 } 855 tty->mode = mode; 856} 857 858static void 859tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 860 enum tty_code_code code1, u_int n) 861{ 862 if (tty_term_has(tty->term, code)) 863 tty_putcode_i(tty, code, n); 864 else { 865 while (n-- > 0) 866 tty_putcode(tty, code1); 867 } 868} 869 870static void 871tty_repeat_space(struct tty *tty, u_int n) 872{ 873 static char s[500]; 874 875 if (*s != ' ') 876 memset(s, ' ', sizeof s); 877 878 while (n > sizeof s) { 879 tty_putn(tty, s, sizeof s, sizeof s); 880 n -= sizeof s; 881 } 882 if (n != 0) 883 tty_putn(tty, s, n, n); 884} 885 886/* Is this window bigger than the terminal? */ 887int 888tty_window_bigger(struct tty *tty) 889{ 890 struct client *c = tty->client; 891 struct window *w = c->session->curw->window; 892 893 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 894} 895 896/* What offset should this window be drawn at? */ 897int 898tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 899{ 900 *ox = tty->oox; 901 *oy = tty->ooy; 902 *sx = tty->osx; 903 *sy = tty->osy; 904 905 return (tty->oflag); 906} 907 908/* What offset should this window be drawn at? */ 909static int 910tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 911{ 912 struct client *c = tty->client; 913 struct window *w = c->session->curw->window; 914 struct window_pane *wp = server_client_get_pane(c); 915 u_int cx, cy, lines; 916 917 lines = status_line_size(c); 918 919 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 920 *ox = 0; 921 *oy = 0; 922 *sx = w->sx; 923 *sy = w->sy; 924 925 c->pan_window = NULL; 926 return (0); 927 } 928 929 *sx = tty->sx; 930 *sy = tty->sy - lines; 931 932 if (c->pan_window == w) { 933 if (*sx >= w->sx) 934 c->pan_ox = 0; 935 else if (c->pan_ox + *sx > w->sx) 936 c->pan_ox = w->sx - *sx; 937 *ox = c->pan_ox; 938 if (*sy >= w->sy) 939 c->pan_oy = 0; 940 else if (c->pan_oy + *sy > w->sy) 941 c->pan_oy = w->sy - *sy; 942 *oy = c->pan_oy; 943 return (1); 944 } 945 946 if (~wp->screen->mode & MODE_CURSOR) { 947 *ox = 0; 948 *oy = 0; 949 } else { 950 cx = wp->xoff + wp->screen->cx; 951 cy = wp->yoff + wp->screen->cy; 952 953 if (cx < *sx) 954 *ox = 0; 955 else if (cx > w->sx - *sx) 956 *ox = w->sx - *sx; 957 else 958 *ox = cx - *sx / 2; 959 960 if (cy < *sy) 961 *oy = 0; 962 else if (cy > w->sy - *sy) 963 *oy = w->sy - *sy; 964 else 965 *oy = cy - *sy / 2; 966 } 967 968 c->pan_window = NULL; 969 return (1); 970} 971 972/* Update stored offsets for a window and redraw if necessary. */ 973void 974tty_update_window_offset(struct window *w) 975{ 976 struct client *c; 977 978 TAILQ_FOREACH(c, &clients, entry) { 979 if (c->session != NULL && 980 c->session->curw != NULL && 981 c->session->curw->window == w) 982 tty_update_client_offset(c); 983 } 984} 985 986/* Update stored offsets for a client and redraw if necessary. */ 987void 988tty_update_client_offset(struct client *c) 989{ 990 u_int ox, oy, sx, sy; 991 992 if (~c->flags & CLIENT_TERMINAL) 993 return; 994 995 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 996 if (ox == c->tty.oox && 997 oy == c->tty.ooy && 998 sx == c->tty.osx && 999 sy == c->tty.osy) 1000 return; 1001 1002 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 1003 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 1004 ox, oy, sx, sy); 1005 1006 c->tty.oox = ox; 1007 c->tty.ooy = oy; 1008 c->tty.osx = sx; 1009 c->tty.osy = sy; 1010 1011 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 1012} 1013 1014/* 1015 * Is the region large enough to be worth redrawing once later rather than 1016 * probably several times now? Currently yes if it is more than 50% of the 1017 * pane. 1018 */ 1019static int 1020tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 1021{ 1022 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 1023} 1024 1025/* 1026 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 1027 * emulated. 1028 */ 1029static int 1030tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 1031{ 1032 if (tty_term_flag(tty->term, TTYC_BCE)) 1033 return (0); 1034 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 1035 return (1); 1036 return (0); 1037} 1038 1039/* 1040 * Redraw scroll region using data from screen (already updated). Used when 1041 * CSR not supported, or window is a pane that doesn't take up the full 1042 * width of the terminal. 1043 */ 1044static void 1045tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 1046{ 1047 struct client *c = tty->client; 1048 u_int i; 1049 1050 /* 1051 * If region is large, schedule a redraw. In most cases this is likely 1052 * to be followed by some more scrolling. 1053 */ 1054 if (tty_large_region(tty, ctx)) { 1055 log_debug("%s: %s large redraw", __func__, c->name); 1056 ctx->redraw_cb(ctx); 1057 return; 1058 } 1059 1060 for (i = ctx->orupper; i <= ctx->orlower; i++) 1061 tty_draw_pane(tty, ctx, i); 1062} 1063 1064/* Is this position visible in the pane? */ 1065static int 1066tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1067 u_int py, u_int nx, u_int ny) 1068{ 1069 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1070 1071 if (!ctx->bigger) 1072 return (1); 1073 1074 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1075 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1076 return (0); 1077 return (1); 1078} 1079 1080/* Clamp line position to visible part of pane. */ 1081static int 1082tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1083 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1084{ 1085 u_int xoff = ctx->rxoff + px; 1086 1087 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1088 return (0); 1089 *ry = ctx->yoff + py - ctx->woy; 1090 1091 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1092 /* All visible. */ 1093 *i = 0; 1094 *x = ctx->xoff + px - ctx->wox; 1095 *rx = nx; 1096 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1097 /* Both left and right not visible. */ 1098 *i = ctx->wox; 1099 *x = 0; 1100 *rx = ctx->wsx; 1101 } else if (xoff < ctx->wox) { 1102 /* Left not visible. */ 1103 *i = ctx->wox - (ctx->xoff + px); 1104 *x = 0; 1105 *rx = nx - *i; 1106 } else { 1107 /* Right not visible. */ 1108 *i = 0; 1109 *x = (ctx->xoff + px) - ctx->wox; 1110 *rx = ctx->wsx - *x; 1111 } 1112 if (*rx > nx) 1113 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1114 1115 return (1); 1116} 1117 1118/* Clear a line. */ 1119static void 1120tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1121 u_int px, u_int nx, u_int bg) 1122{ 1123 struct client *c = tty->client; 1124 struct overlay_ranges r; 1125 u_int i; 1126 1127 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1128 1129 /* Nothing to clear. */ 1130 if (nx == 0) 1131 return; 1132 1133 /* If genuine BCE is available, can try escape sequences. */ 1134 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1135 /* Off the end of the line, use EL if available. */ 1136 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1137 tty_cursor(tty, px, py); 1138 tty_putcode(tty, TTYC_EL); 1139 return; 1140 } 1141 1142 /* At the start of the line. Use EL1. */ 1143 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1144 tty_cursor(tty, px + nx - 1, py); 1145 tty_putcode(tty, TTYC_EL1); 1146 return; 1147 } 1148 1149 /* Section of line. Use ECH if possible. */ 1150 if (tty_term_has(tty->term, TTYC_ECH)) { 1151 tty_cursor(tty, px, py); 1152 tty_putcode_i(tty, TTYC_ECH, nx); 1153 return; 1154 } 1155 } 1156 1157 /* 1158 * Couldn't use an escape sequence, use spaces. Clear only the visible 1159 * bit if there is an overlay. 1160 */ 1161 tty_check_overlay_range(tty, px, py, nx, &r); 1162 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 1163 if (r.nx[i] == 0) 1164 continue; 1165 tty_cursor(tty, r.px[i], py); 1166 tty_repeat_space(tty, r.nx[i]); 1167 } 1168} 1169 1170/* Clear a line, adjusting to visible part of pane. */ 1171static void 1172tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1173 u_int px, u_int nx, u_int bg) 1174{ 1175 struct client *c = tty->client; 1176 u_int i, x, rx, ry; 1177 1178 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1179 1180 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1181 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1182} 1183 1184/* Clamp area position to visible part of pane. */ 1185static int 1186tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1187 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1188 u_int *ry) 1189{ 1190 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1191 1192 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1193 return (0); 1194 1195 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1196 /* All visible. */ 1197 *i = 0; 1198 *x = ctx->xoff + px - ctx->wox; 1199 *rx = nx; 1200 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1201 /* Both left and right not visible. */ 1202 *i = ctx->wox; 1203 *x = 0; 1204 *rx = ctx->wsx; 1205 } else if (xoff < ctx->wox) { 1206 /* Left not visible. */ 1207 *i = ctx->wox - (ctx->xoff + px); 1208 *x = 0; 1209 *rx = nx - *i; 1210 } else { 1211 /* Right not visible. */ 1212 *i = 0; 1213 *x = (ctx->xoff + px) - ctx->wox; 1214 *rx = ctx->wsx - *x; 1215 } 1216 if (*rx > nx) 1217 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1218 1219 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1220 /* All visible. */ 1221 *j = 0; 1222 *y = ctx->yoff + py - ctx->woy; 1223 *ry = ny; 1224 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1225 /* Both top and bottom not visible. */ 1226 *j = ctx->woy; 1227 *y = 0; 1228 *ry = ctx->wsy; 1229 } else if (yoff < ctx->woy) { 1230 /* Top not visible. */ 1231 *j = ctx->woy - (ctx->yoff + py); 1232 *y = 0; 1233 *ry = ny - *j; 1234 } else { 1235 /* Bottom not visible. */ 1236 *j = 0; 1237 *y = (ctx->yoff + py) - ctx->woy; 1238 *ry = ctx->wsy - *y; 1239 } 1240 if (*ry > ny) 1241 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1242 1243 return (1); 1244} 1245 1246/* Clear an area, adjusting to visible part of pane. */ 1247static void 1248tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1249 u_int ny, u_int px, u_int nx, u_int bg) 1250{ 1251 struct client *c = tty->client; 1252 u_int yy; 1253 char tmp[64]; 1254 1255 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1256 1257 /* Nothing to clear. */ 1258 if (nx == 0 || ny == 0) 1259 return; 1260 1261 /* If genuine BCE is available, can try escape sequences. */ 1262 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1263 /* Use ED if clearing off the bottom of the terminal. */ 1264 if (px == 0 && 1265 px + nx >= tty->sx && 1266 py + ny >= tty->sy && 1267 tty_term_has(tty->term, TTYC_ED)) { 1268 tty_cursor(tty, 0, py); 1269 tty_putcode(tty, TTYC_ED); 1270 return; 1271 } 1272 1273 /* 1274 * On VT420 compatible terminals we can use DECFRA if the 1275 * background colour isn't default (because it doesn't work 1276 * after SGR 0). 1277 */ 1278 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1279 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1280 py + 1, px + 1, py + ny, px + nx); 1281 tty_puts(tty, tmp); 1282 return; 1283 } 1284 1285 /* Full lines can be scrolled away to clear them. */ 1286 if (px == 0 && 1287 px + nx >= tty->sx && 1288 ny > 2 && 1289 tty_term_has(tty->term, TTYC_CSR) && 1290 tty_term_has(tty->term, TTYC_INDN)) { 1291 tty_region(tty, py, py + ny - 1); 1292 tty_margin_off(tty); 1293 tty_putcode_i(tty, TTYC_INDN, ny); 1294 return; 1295 } 1296 1297 /* 1298 * If margins are supported, can just scroll the area off to 1299 * clear it. 1300 */ 1301 if (nx > 2 && 1302 ny > 2 && 1303 tty_term_has(tty->term, TTYC_CSR) && 1304 tty_use_margin(tty) && 1305 tty_term_has(tty->term, TTYC_INDN)) { 1306 tty_region(tty, py, py + ny - 1); 1307 tty_margin(tty, px, px + nx - 1); 1308 tty_putcode_i(tty, TTYC_INDN, ny); 1309 return; 1310 } 1311 } 1312 1313 /* Couldn't use an escape sequence, loop over the lines. */ 1314 for (yy = py; yy < py + ny; yy++) 1315 tty_clear_line(tty, defaults, yy, px, nx, bg); 1316} 1317 1318/* Clear an area in a pane. */ 1319static void 1320tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1321 u_int ny, u_int px, u_int nx, u_int bg) 1322{ 1323 u_int i, j, x, y, rx, ry; 1324 1325 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1326 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1327} 1328 1329static void 1330tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1331{ 1332 struct screen *s = ctx->s; 1333 u_int nx = ctx->sx, i, x, rx, ry; 1334 1335 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1336 1337 if (!ctx->bigger) { 1338 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1339 &ctx->defaults, ctx->palette); 1340 return; 1341 } 1342 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1343 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1344 ctx->palette); 1345 } 1346} 1347 1348static const struct grid_cell * 1349tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1350{ 1351 static struct grid_cell new; 1352 int c; 1353 1354 /* Characters less than 0x7f are always fine, no matter what. */ 1355 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1356 return (gc); 1357 1358 /* UTF-8 terminal and a UTF-8 character - fine. */ 1359 if (tty->client->flags & CLIENT_UTF8) 1360 return (gc); 1361 memcpy(&new, gc, sizeof new); 1362 1363 /* See if this can be mapped to an ACS character. */ 1364 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1365 if (c != -1) { 1366 utf8_set(&new.data, c); 1367 new.attr |= GRID_ATTR_CHARSET; 1368 return (&new); 1369 } 1370 1371 /* Replace by the right number of underscores. */ 1372 new.data.size = gc->data.width; 1373 if (new.data.size > UTF8_SIZE) 1374 new.data.size = UTF8_SIZE; 1375 memset(new.data.data, '_', new.data.size); 1376 return (&new); 1377} 1378 1379/* 1380 * Check if a single character is obstructed by the overlay and return a 1381 * boolean. 1382 */ 1383static int 1384tty_check_overlay(struct tty *tty, u_int px, u_int py) 1385{ 1386 struct overlay_ranges r; 1387 1388 /* 1389 * A unit width range will always return nx[2] == 0 from a check, even 1390 * with multiple overlays, so it's sufficient to check just the first 1391 * two entries. 1392 */ 1393 tty_check_overlay_range(tty, px, py, 1, &r); 1394 if (r.nx[0] + r.nx[1] == 0) 1395 return (0); 1396 return (1); 1397} 1398 1399/* Return parts of the input range which are visible. */ 1400static void 1401tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx, 1402 struct overlay_ranges *r) 1403{ 1404 struct client *c = tty->client; 1405 1406 if (c->overlay_check == NULL) { 1407 r->px[0] = px; 1408 r->nx[0] = nx; 1409 r->px[1] = 0; 1410 r->nx[1] = 0; 1411 r->px[2] = 0; 1412 r->nx[2] = 0; 1413 return; 1414 } 1415 1416 c->overlay_check(c, c->overlay_data, px, py, nx, r); 1417} 1418 1419void 1420tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1421 u_int atx, u_int aty, const struct grid_cell *defaults, 1422 struct colour_palette *palette) 1423{ 1424 struct grid *gd = s->grid; 1425 struct grid_cell gc, last; 1426 const struct grid_cell *gcp; 1427 struct grid_line *gl; 1428 struct client *c = tty->client; 1429 struct overlay_ranges r; 1430 u_int i, j, ux, sx, width, hidden, eux, nxx; 1431 u_int cellsize; 1432 int flags, cleared = 0, wrapped = 0; 1433 char buf[512]; 1434 size_t len; 1435 1436 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1437 px, py, nx, atx, aty); 1438 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1439 defaults->bg); 1440 1441 /* 1442 * py is the line in the screen to draw. 1443 * px is the start x and nx is the width to draw. 1444 * atx,aty is the line on the terminal to draw it. 1445 */ 1446 1447 flags = (tty->flags & TTY_NOCURSOR); 1448 tty->flags |= TTY_NOCURSOR; 1449 tty_update_mode(tty, tty->mode, s); 1450 1451 tty_region_off(tty); 1452 tty_margin_off(tty); 1453 1454 /* 1455 * Clamp the width to cellsize - note this is not cellused, because 1456 * there may be empty background cells after it (from BCE). 1457 */ 1458 sx = screen_size_x(s); 1459 if (nx > sx) 1460 nx = sx; 1461 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1462 if (sx > cellsize) 1463 sx = cellsize; 1464 if (sx > tty->sx) 1465 sx = tty->sx; 1466 if (sx > nx) 1467 sx = nx; 1468 ux = 0; 1469 1470 if (py == 0) 1471 gl = NULL; 1472 else 1473 gl = grid_get_line(gd, gd->hsize + py - 1); 1474 if (gl == NULL || 1475 (~gl->flags & GRID_LINE_WRAPPED) || 1476 atx != 0 || 1477 tty->cx < tty->sx || 1478 nx < tty->sx) { 1479 if (nx < tty->sx && 1480 atx == 0 && 1481 px + sx != nx && 1482 tty_term_has(tty->term, TTYC_EL1) && 1483 !tty_fake_bce(tty, defaults, 8) && 1484 c->overlay_check == NULL) { 1485 tty_default_attributes(tty, defaults, palette, 8, 1486 s->hyperlinks); 1487 tty_cursor(tty, nx - 1, aty); 1488 tty_putcode(tty, TTYC_EL1); 1489 cleared = 1; 1490 } 1491 } else { 1492 log_debug("%s: wrapped line %u", __func__, aty); 1493 wrapped = 1; 1494 } 1495 1496 memcpy(&last, &grid_default_cell, sizeof last); 1497 len = 0; 1498 width = 0; 1499 1500 for (i = 0; i < sx; i++) { 1501 grid_view_get_cell(gd, px + i, py, &gc); 1502 gcp = tty_check_codeset(tty, &gc); 1503 if (len != 0 && 1504 (!tty_check_overlay(tty, atx + ux + width, aty) || 1505 (gcp->attr & GRID_ATTR_CHARSET) || 1506 gcp->flags != last.flags || 1507 gcp->attr != last.attr || 1508 gcp->fg != last.fg || 1509 gcp->bg != last.bg || 1510 gcp->us != last.us || 1511 gcp->link != last.link || 1512 ux + width + gcp->data.width > nx || 1513 (sizeof buf) - len < gcp->data.size)) { 1514 tty_attributes(tty, &last, defaults, palette, 1515 s->hyperlinks); 1516 if (last.flags & GRID_FLAG_CLEARED) { 1517 log_debug("%s: %zu cleared", __func__, len); 1518 tty_clear_line(tty, defaults, aty, atx + ux, 1519 width, last.bg); 1520 } else { 1521 if (!wrapped || atx != 0 || ux != 0) 1522 tty_cursor(tty, atx + ux, aty); 1523 tty_putn(tty, buf, len, width); 1524 } 1525 ux += width; 1526 1527 len = 0; 1528 width = 0; 1529 wrapped = 0; 1530 } 1531 1532 if (gcp->flags & GRID_FLAG_SELECTED) 1533 screen_select_cell(s, &last, gcp); 1534 else 1535 memcpy(&last, gcp, sizeof last); 1536 1537 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width, 1538 &r); 1539 hidden = 0; 1540 for (j = 0; j < OVERLAY_MAX_RANGES; j++) 1541 hidden += r.nx[j]; 1542 hidden = gcp->data.width - hidden; 1543 if (hidden != 0 && hidden == gcp->data.width) { 1544 if (~gcp->flags & GRID_FLAG_PADDING) 1545 ux += gcp->data.width; 1546 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1547 if (~gcp->flags & GRID_FLAG_PADDING) { 1548 tty_attributes(tty, &last, defaults, palette, 1549 s->hyperlinks); 1550 for (j = 0; j < OVERLAY_MAX_RANGES; j++) { 1551 if (r.nx[j] == 0) 1552 continue; 1553 /* Effective width drawn so far. */ 1554 eux = r.px[j] - atx; 1555 if (eux < nx) { 1556 tty_cursor(tty, r.px[j], aty); 1557 nxx = nx - eux; 1558 if (r.nx[j] > nxx) 1559 r.nx[j] = nxx; 1560 tty_repeat_space(tty, r.nx[j]); 1561 ux = eux + r.nx[j]; 1562 } 1563 } 1564 } 1565 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1566 tty_attributes(tty, &last, defaults, palette, 1567 s->hyperlinks); 1568 tty_cursor(tty, atx + ux, aty); 1569 for (j = 0; j < gcp->data.size; j++) 1570 tty_putc(tty, gcp->data.data[j]); 1571 ux += gcp->data.width; 1572 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1573 memcpy(buf + len, gcp->data.data, gcp->data.size); 1574 len += gcp->data.size; 1575 width += gcp->data.width; 1576 } 1577 } 1578 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1579 tty_attributes(tty, &last, defaults, palette, s->hyperlinks); 1580 if (last.flags & GRID_FLAG_CLEARED) { 1581 log_debug("%s: %zu cleared (end)", __func__, len); 1582 tty_clear_line(tty, defaults, aty, atx + ux, width, 1583 last.bg); 1584 } else { 1585 if (!wrapped || atx != 0 || ux != 0) 1586 tty_cursor(tty, atx + ux, aty); 1587 tty_putn(tty, buf, len, width); 1588 } 1589 ux += width; 1590 } 1591 1592 if (!cleared && ux < nx) { 1593 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1594 nx - ux, len); 1595 tty_default_attributes(tty, defaults, palette, 8, 1596 s->hyperlinks); 1597 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1598 } 1599 1600 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1601 tty_update_mode(tty, tty->mode, s); 1602} 1603 1604void 1605tty_sync_start(struct tty *tty) 1606{ 1607 if (tty->flags & TTY_BLOCK) 1608 return; 1609 if (tty->flags & TTY_SYNCING) 1610 return; 1611 tty->flags |= TTY_SYNCING; 1612 1613 if (tty_term_has(tty->term, TTYC_SYNC)) { 1614 log_debug("%s sync start", tty->client->name); 1615 tty_putcode_i(tty, TTYC_SYNC, 1); 1616 } 1617} 1618 1619void 1620tty_sync_end(struct tty *tty) 1621{ 1622 if (tty->flags & TTY_BLOCK) 1623 return; 1624 if (~tty->flags & TTY_SYNCING) 1625 return; 1626 tty->flags &= ~TTY_SYNCING; 1627 1628 if (tty_term_has(tty->term, TTYC_SYNC)) { 1629 log_debug("%s sync end", tty->client->name); 1630 tty_putcode_i(tty, TTYC_SYNC, 2); 1631 } 1632} 1633 1634static int 1635tty_client_ready(const struct tty_ctx *ctx, struct client *c) 1636{ 1637 if (c->session == NULL || c->tty.term == NULL) 1638 return (0); 1639 if (c->flags & CLIENT_SUSPENDED) 1640 return (0); 1641 1642 /* 1643 * If invisible panes are allowed (used for passthrough), don't care if 1644 * redrawing or frozen. 1645 */ 1646 if (ctx->allow_invisible_panes) 1647 return (1); 1648 1649 if (c->flags & CLIENT_REDRAWWINDOW) 1650 return (0); 1651 if (c->tty.flags & TTY_FREEZE) 1652 return (0); 1653 return (1); 1654} 1655 1656void 1657tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1658 struct tty_ctx *ctx) 1659{ 1660 struct client *c; 1661 int state; 1662 1663 if (ctx->set_client_cb == NULL) 1664 return; 1665 TAILQ_FOREACH(c, &clients, entry) { 1666 if (tty_client_ready(ctx, c)) { 1667 state = ctx->set_client_cb(ctx, c); 1668 if (state == -1) 1669 break; 1670 if (state == 0) 1671 continue; 1672 cmdfn(&c->tty, ctx); 1673 } 1674 } 1675} 1676 1677void 1678tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1679{ 1680 struct client *c = tty->client; 1681 1682 if (ctx->bigger || 1683 !tty_full_width(tty, ctx) || 1684 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1685 (!tty_term_has(tty->term, TTYC_ICH) && 1686 !tty_term_has(tty->term, TTYC_ICH1)) || 1687 c->overlay_check != NULL) { 1688 tty_draw_pane(tty, ctx, ctx->ocy); 1689 return; 1690 } 1691 1692 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1693 ctx->s->hyperlinks); 1694 1695 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1696 1697 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1698} 1699 1700void 1701tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1702{ 1703 struct client *c = tty->client; 1704 1705 if (ctx->bigger || 1706 !tty_full_width(tty, ctx) || 1707 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1708 (!tty_term_has(tty->term, TTYC_DCH) && 1709 !tty_term_has(tty->term, TTYC_DCH1)) || 1710 c->overlay_check != NULL) { 1711 tty_draw_pane(tty, ctx, ctx->ocy); 1712 return; 1713 } 1714 1715 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1716 ctx->s->hyperlinks); 1717 1718 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1719 1720 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1721} 1722 1723void 1724tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1725{ 1726 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1727 ctx->s->hyperlinks); 1728 1729 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1730} 1731 1732void 1733tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1734{ 1735 struct client *c = tty->client; 1736 1737 if (ctx->bigger || 1738 !tty_full_width(tty, ctx) || 1739 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1740 !tty_term_has(tty->term, TTYC_CSR) || 1741 !tty_term_has(tty->term, TTYC_IL1) || 1742 ctx->sx == 1 || 1743 ctx->sy == 1 || 1744 c->overlay_check != NULL) { 1745 tty_redraw_region(tty, ctx); 1746 return; 1747 } 1748 1749 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1750 ctx->s->hyperlinks); 1751 1752 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1753 tty_margin_off(tty); 1754 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1755 1756 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1757 tty->cx = tty->cy = UINT_MAX; 1758} 1759 1760void 1761tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1762{ 1763 struct client *c = tty->client; 1764 1765 if (ctx->bigger || 1766 !tty_full_width(tty, ctx) || 1767 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1768 !tty_term_has(tty->term, TTYC_CSR) || 1769 !tty_term_has(tty->term, TTYC_DL1) || 1770 ctx->sx == 1 || 1771 ctx->sy == 1 || 1772 c->overlay_check != NULL) { 1773 tty_redraw_region(tty, ctx); 1774 return; 1775 } 1776 1777 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1778 ctx->s->hyperlinks); 1779 1780 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1781 tty_margin_off(tty); 1782 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1783 1784 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1785 tty->cx = tty->cy = UINT_MAX; 1786} 1787 1788void 1789tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1790{ 1791 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1792 ctx->s->hyperlinks); 1793 1794 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1795} 1796 1797void 1798tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1799{ 1800 u_int nx = ctx->sx - ctx->ocx; 1801 1802 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1803 ctx->s->hyperlinks); 1804 1805 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1806} 1807 1808void 1809tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 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, 0, ctx->ocx + 1, ctx->bg); 1815} 1816 1817void 1818tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1819{ 1820 struct client *c = tty->client; 1821 1822 if (ctx->ocy != ctx->orupper) 1823 return; 1824 1825 if (ctx->bigger || 1826 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1827 tty_fake_bce(tty, &ctx->defaults, 8) || 1828 !tty_term_has(tty->term, TTYC_CSR) || 1829 (!tty_term_has(tty->term, TTYC_RI) && 1830 !tty_term_has(tty->term, TTYC_RIN)) || 1831 ctx->sx == 1 || 1832 ctx->sy == 1 || 1833 c->overlay_check != NULL) { 1834 tty_redraw_region(tty, ctx); 1835 return; 1836 } 1837 1838 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1839 ctx->s->hyperlinks); 1840 1841 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1842 tty_margin_pane(tty, ctx); 1843 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1844 1845 if (tty_term_has(tty->term, TTYC_RI)) 1846 tty_putcode(tty, TTYC_RI); 1847 else 1848 tty_putcode_i(tty, TTYC_RIN, 1); 1849} 1850 1851void 1852tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1853{ 1854 struct client *c = tty->client; 1855 1856 if (ctx->ocy != ctx->orlower) 1857 return; 1858 1859 if (ctx->bigger || 1860 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1861 tty_fake_bce(tty, &ctx->defaults, 8) || 1862 !tty_term_has(tty->term, TTYC_CSR) || 1863 ctx->sx == 1 || 1864 ctx->sy == 1 || 1865 c->overlay_check != NULL) { 1866 tty_redraw_region(tty, ctx); 1867 return; 1868 } 1869 1870 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1871 ctx->s->hyperlinks); 1872 1873 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1874 tty_margin_pane(tty, ctx); 1875 1876 /* 1877 * If we want to wrap a pane while using margins, the cursor needs to 1878 * be exactly on the right of the region. If the cursor is entirely off 1879 * the edge - move it back to the right. Some terminals are funny about 1880 * this and insert extra spaces, so only use the right if margins are 1881 * enabled. 1882 */ 1883 if (ctx->xoff + ctx->ocx > tty->rright) { 1884 if (!tty_use_margin(tty)) 1885 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1886 else 1887 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1888 } else 1889 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1890 1891 tty_putc(tty, '\n'); 1892} 1893 1894void 1895tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1896{ 1897 struct client *c = tty->client; 1898 u_int i; 1899 1900 if (ctx->bigger || 1901 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1902 tty_fake_bce(tty, &ctx->defaults, 8) || 1903 !tty_term_has(tty->term, TTYC_CSR) || 1904 ctx->sx == 1 || 1905 ctx->sy == 1 || 1906 c->overlay_check != NULL) { 1907 tty_redraw_region(tty, ctx); 1908 return; 1909 } 1910 1911 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1912 ctx->s->hyperlinks); 1913 1914 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1915 tty_margin_pane(tty, ctx); 1916 1917 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1918 if (!tty_use_margin(tty)) 1919 tty_cursor(tty, 0, tty->rlower); 1920 else 1921 tty_cursor(tty, tty->rright, tty->rlower); 1922 for (i = 0; i < ctx->num; i++) 1923 tty_putc(tty, '\n'); 1924 } else { 1925 if (tty->cy == UINT_MAX) 1926 tty_cursor(tty, 0, 0); 1927 else 1928 tty_cursor(tty, 0, tty->cy); 1929 tty_putcode_i(tty, TTYC_INDN, ctx->num); 1930 } 1931} 1932 1933void 1934tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1935{ 1936 u_int i; 1937 struct client *c = tty->client; 1938 1939 if (ctx->bigger || 1940 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1941 tty_fake_bce(tty, &ctx->defaults, 8) || 1942 !tty_term_has(tty->term, TTYC_CSR) || 1943 (!tty_term_has(tty->term, TTYC_RI) && 1944 !tty_term_has(tty->term, TTYC_RIN)) || 1945 ctx->sx == 1 || 1946 ctx->sy == 1 || 1947 c->overlay_check != NULL) { 1948 tty_redraw_region(tty, ctx); 1949 return; 1950 } 1951 1952 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1953 ctx->s->hyperlinks); 1954 1955 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1956 tty_margin_pane(tty, ctx); 1957 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1958 1959 if (tty_term_has(tty->term, TTYC_RIN)) 1960 tty_putcode_i(tty, TTYC_RIN, ctx->num); 1961 else { 1962 for (i = 0; i < ctx->num; i++) 1963 tty_putcode(tty, TTYC_RI); 1964 } 1965} 1966 1967void 1968tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1969{ 1970 u_int px, py, nx, ny; 1971 1972 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1973 ctx->s->hyperlinks); 1974 1975 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1976 tty_margin_off(tty); 1977 1978 px = 0; 1979 nx = ctx->sx; 1980 py = ctx->ocy + 1; 1981 ny = ctx->sy - ctx->ocy - 1; 1982 1983 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1984 1985 px = ctx->ocx; 1986 nx = ctx->sx - ctx->ocx; 1987 py = ctx->ocy; 1988 1989 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1990} 1991 1992void 1993tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1994{ 1995 u_int px, py, nx, ny; 1996 1997 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1998 ctx->s->hyperlinks); 1999 2000 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2001 tty_margin_off(tty); 2002 2003 px = 0; 2004 nx = ctx->sx; 2005 py = 0; 2006 ny = ctx->ocy; 2007 2008 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2009 2010 px = 0; 2011 nx = ctx->ocx + 1; 2012 py = ctx->ocy; 2013 2014 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 2015} 2016 2017void 2018tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 2019{ 2020 u_int px, py, nx, ny; 2021 2022 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2023 ctx->s->hyperlinks); 2024 2025 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2026 tty_margin_off(tty); 2027 2028 px = 0; 2029 nx = ctx->sx; 2030 py = 0; 2031 ny = ctx->sy; 2032 2033 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2034} 2035 2036void 2037tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 2038{ 2039 u_int i, j; 2040 2041 if (ctx->bigger) { 2042 ctx->redraw_cb(ctx); 2043 return; 2044 } 2045 2046 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette, 2047 ctx->s->hyperlinks); 2048 2049 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2050 tty_margin_off(tty); 2051 2052 for (j = 0; j < ctx->sy; j++) { 2053 tty_cursor_pane(tty, ctx, 0, j); 2054 for (i = 0; i < ctx->sx; i++) 2055 tty_putc(tty, 'E'); 2056 } 2057} 2058 2059void 2060tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 2061{ 2062 const struct grid_cell *gcp = ctx->cell; 2063 struct screen *s = ctx->s; 2064 struct overlay_ranges r; 2065 u_int px, py, i, vis = 0; 2066 2067 px = ctx->xoff + ctx->ocx - ctx->wox; 2068 py = ctx->yoff + ctx->ocy - ctx->woy; 2069 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 2070 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 2071 return; 2072 2073 /* Handle partially obstructed wide characters. */ 2074 if (gcp->data.width > 1) { 2075 tty_check_overlay_range(tty, px, py, gcp->data.width, &r); 2076 for (i = 0; i < OVERLAY_MAX_RANGES; i++) 2077 vis += r.nx[i]; 2078 if (vis < gcp->data.width) { 2079 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width, 2080 px, py, &ctx->defaults, ctx->palette); 2081 return; 2082 } 2083 } 2084 2085 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 2086 ctx->ocy == ctx->orlower && 2087 tty_full_width(tty, ctx)) 2088 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2089 2090 tty_margin_off(tty); 2091 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2092 2093 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette, 2094 ctx->s->hyperlinks); 2095 2096 if (ctx->num == 1) 2097 tty_invalidate(tty); 2098} 2099 2100void 2101tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 2102{ 2103 struct overlay_ranges r; 2104 u_int i, px, py, cx; 2105 char *cp = ctx->ptr; 2106 2107 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 2108 return; 2109 2110 if (ctx->bigger && 2111 (ctx->xoff + ctx->ocx < ctx->wox || 2112 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 2113 if (!ctx->wrapped || 2114 !tty_full_width(tty, ctx) || 2115 (tty->term->flags & TERM_NOAM) || 2116 ctx->xoff + ctx->ocx != 0 || 2117 ctx->yoff + ctx->ocy != tty->cy + 1 || 2118 tty->cx < tty->sx || 2119 tty->cy == tty->rlower) 2120 tty_draw_pane(tty, ctx, ctx->ocy); 2121 else 2122 ctx->redraw_cb(ctx); 2123 return; 2124 } 2125 2126 tty_margin_off(tty); 2127 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2128 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks); 2129 2130 /* Get tty position from pane position for overlay check. */ 2131 px = ctx->xoff + ctx->ocx - ctx->wox; 2132 py = ctx->yoff + ctx->ocy - ctx->woy; 2133 2134 tty_check_overlay_range(tty, px, py, ctx->num, &r); 2135 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 2136 if (r.nx[i] == 0) 2137 continue; 2138 /* Convert back to pane position for printing. */ 2139 cx = r.px[i] - ctx->xoff + ctx->wox; 2140 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy); 2141 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]); 2142 } 2143} 2144 2145void 2146tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2147{ 2148 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num); 2149} 2150 2151void 2152tty_set_selection(struct tty *tty, const char *flags, const char *buf, 2153 size_t len) 2154{ 2155 char *encoded; 2156 size_t size; 2157 2158 if (~tty->flags & TTY_STARTED) 2159 return; 2160 if (!tty_term_has(tty->term, TTYC_MS)) 2161 return; 2162 2163 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2164 encoded = xmalloc(size); 2165 2166 b64_ntop(buf, len, encoded, size); 2167 tty->flags |= TTY_NOBLOCK; 2168 tty_putcode_ss(tty, TTYC_MS, flags, encoded); 2169 2170 free(encoded); 2171} 2172 2173void 2174tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2175{ 2176 tty->flags |= TTY_NOBLOCK; 2177 tty_add(tty, ctx->ptr, ctx->num); 2178 tty_invalidate(tty); 2179} 2180 2181void 2182tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2183{ 2184 if (ctx->num == 0x11) { 2185 /* 2186 * This is an overlay and a command that moves the cursor so 2187 * start synchronized updates. 2188 */ 2189 tty_sync_start(tty); 2190 } else if (~ctx->num & 0x10) { 2191 /* 2192 * This is a pane. If there is an overlay, always start; 2193 * otherwise, only if requested. 2194 */ 2195 if (ctx->num || tty->client->overlay_draw != NULL) 2196 tty_sync_start(tty); 2197 } 2198} 2199 2200void 2201tty_cell(struct tty *tty, const struct grid_cell *gc, 2202 const struct grid_cell *defaults, struct colour_palette *palette, 2203 struct hyperlinks *hl) 2204{ 2205 const struct grid_cell *gcp; 2206 2207 /* Skip last character if terminal is stupid. */ 2208 if ((tty->term->flags & TERM_NOAM) && 2209 tty->cy == tty->sy - 1 && 2210 tty->cx == tty->sx - 1) 2211 return; 2212 2213 /* If this is a padding character, do nothing. */ 2214 if (gc->flags & GRID_FLAG_PADDING) 2215 return; 2216 2217 /* Check the output codeset and apply attributes. */ 2218 gcp = tty_check_codeset(tty, gc); 2219 tty_attributes(tty, gcp, defaults, palette, hl); 2220 2221 /* If it is a single character, write with putc to handle ACS. */ 2222 if (gcp->data.size == 1) { 2223 tty_attributes(tty, gcp, defaults, palette, hl); 2224 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2225 return; 2226 tty_putc(tty, *gcp->data.data); 2227 return; 2228 } 2229 2230 /* Write the data. */ 2231 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2232} 2233 2234void 2235tty_reset(struct tty *tty) 2236{ 2237 struct grid_cell *gc = &tty->cell; 2238 2239 if (!grid_cells_equal(gc, &grid_default_cell)) { 2240 if (gc->link != 0) 2241 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2242 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2243 tty_putcode(tty, TTYC_RMACS); 2244 tty_putcode(tty, TTYC_SGR0); 2245 memcpy(gc, &grid_default_cell, sizeof *gc); 2246 } 2247 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2248} 2249 2250static void 2251tty_invalidate(struct tty *tty) 2252{ 2253 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2254 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2255 2256 tty->cx = tty->cy = UINT_MAX; 2257 tty->rupper = tty->rleft = UINT_MAX; 2258 tty->rlower = tty->rright = UINT_MAX; 2259 2260 if (tty->flags & TTY_STARTED) { 2261 if (tty_use_margin(tty)) 2262 tty_putcode(tty, TTYC_ENMG); 2263 tty_putcode(tty, TTYC_SGR0); 2264 2265 tty->mode = ALL_MODES; 2266 tty_update_mode(tty, MODE_CURSOR, NULL); 2267 2268 tty_cursor(tty, 0, 0); 2269 tty_region_off(tty); 2270 tty_margin_off(tty); 2271 } else 2272 tty->mode = MODE_CURSOR; 2273} 2274 2275/* Turn off margin. */ 2276void 2277tty_region_off(struct tty *tty) 2278{ 2279 tty_region(tty, 0, tty->sy - 1); 2280} 2281 2282/* Set region inside pane. */ 2283static void 2284tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2285 u_int rlower) 2286{ 2287 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2288 ctx->yoff + rlower - ctx->woy); 2289} 2290 2291/* Set region at absolute position. */ 2292static void 2293tty_region(struct tty *tty, u_int rupper, u_int rlower) 2294{ 2295 if (tty->rlower == rlower && tty->rupper == rupper) 2296 return; 2297 if (!tty_term_has(tty->term, TTYC_CSR)) 2298 return; 2299 2300 tty->rupper = rupper; 2301 tty->rlower = rlower; 2302 2303 /* 2304 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2305 * 0,0 if it is beyond the last column (they do not reset their wrap 2306 * flag so further output causes a line feed). As a workaround, do an 2307 * explicit move to 0 first. 2308 */ 2309 if (tty->cx >= tty->sx) { 2310 if (tty->cy == UINT_MAX) 2311 tty_cursor(tty, 0, 0); 2312 else 2313 tty_cursor(tty, 0, tty->cy); 2314 } 2315 2316 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2317 tty->cx = tty->cy = UINT_MAX; 2318} 2319 2320/* Turn off margin. */ 2321void 2322tty_margin_off(struct tty *tty) 2323{ 2324 tty_margin(tty, 0, tty->sx - 1); 2325} 2326 2327/* Set margin inside pane. */ 2328static void 2329tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2330{ 2331 tty_margin(tty, ctx->xoff - ctx->wox, 2332 ctx->xoff + ctx->sx - 1 - ctx->wox); 2333} 2334 2335/* Set margin at absolute position. */ 2336static void 2337tty_margin(struct tty *tty, u_int rleft, u_int rright) 2338{ 2339 if (!tty_use_margin(tty)) 2340 return; 2341 if (tty->rleft == rleft && tty->rright == rright) 2342 return; 2343 2344 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2345 2346 tty->rleft = rleft; 2347 tty->rright = rright; 2348 2349 if (rleft == 0 && rright == tty->sx - 1) 2350 tty_putcode(tty, TTYC_CLMG); 2351 else 2352 tty_putcode_ii(tty, TTYC_CMG, rleft, rright); 2353 tty->cx = tty->cy = UINT_MAX; 2354} 2355 2356/* 2357 * Move the cursor, unless it would wrap itself when the next character is 2358 * printed. 2359 */ 2360static void 2361tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2362 u_int cx, u_int cy) 2363{ 2364 if (!ctx->wrapped || 2365 !tty_full_width(tty, ctx) || 2366 (tty->term->flags & TERM_NOAM) || 2367 ctx->xoff + cx != 0 || 2368 ctx->yoff + cy != tty->cy + 1 || 2369 tty->cx < tty->sx || 2370 tty->cy == tty->rlower) 2371 tty_cursor_pane(tty, ctx, cx, cy); 2372 else 2373 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2374} 2375 2376/* Move cursor inside pane. */ 2377static void 2378tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2379{ 2380 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2381} 2382 2383/* Move cursor to absolute position. */ 2384void 2385tty_cursor(struct tty *tty, u_int cx, u_int cy) 2386{ 2387 struct tty_term *term = tty->term; 2388 u_int thisx, thisy; 2389 int change; 2390 2391 if (tty->flags & TTY_BLOCK) 2392 return; 2393 2394 thisx = tty->cx; 2395 thisy = tty->cy; 2396 2397 /* 2398 * If in the automargin space, and want to be there, do not move. 2399 * Otherwise, force the cursor to be in range (and complain). 2400 */ 2401 if (cx == thisx && cy == thisy && cx == tty->sx) 2402 return; 2403 if (cx > tty->sx - 1) { 2404 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1); 2405 cx = tty->sx - 1; 2406 } 2407 2408 /* No change. */ 2409 if (cx == thisx && cy == thisy) 2410 return; 2411 2412 /* Currently at the very end of the line - use absolute movement. */ 2413 if (thisx > tty->sx - 1) 2414 goto absolute; 2415 2416 /* Move to home position (0, 0). */ 2417 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2418 tty_putcode(tty, TTYC_HOME); 2419 goto out; 2420 } 2421 2422 /* Zero on the next line. */ 2423 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2424 (!tty_use_margin(tty) || tty->rleft == 0)) { 2425 tty_putc(tty, '\r'); 2426 tty_putc(tty, '\n'); 2427 goto out; 2428 } 2429 2430 /* Moving column or row. */ 2431 if (cy == thisy) { 2432 /* 2433 * Moving column only, row staying the same. 2434 */ 2435 2436 /* To left edge. */ 2437 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2438 tty_putc(tty, '\r'); 2439 goto out; 2440 } 2441 2442 /* One to the left. */ 2443 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2444 tty_putcode(tty, TTYC_CUB1); 2445 goto out; 2446 } 2447 2448 /* One to the right. */ 2449 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2450 tty_putcode(tty, TTYC_CUF1); 2451 goto out; 2452 } 2453 2454 /* Calculate difference. */ 2455 change = thisx - cx; /* +ve left, -ve right */ 2456 2457 /* 2458 * Use HPA if change is larger than absolute, otherwise move 2459 * the cursor with CUB/CUF. 2460 */ 2461 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2462 tty_putcode_i(tty, TTYC_HPA, cx); 2463 goto out; 2464 } else if (change > 0 && 2465 tty_term_has(term, TTYC_CUB) && 2466 !tty_use_margin(tty)) { 2467 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2468 tty_putcode(tty, TTYC_CUB1); 2469 tty_putcode(tty, TTYC_CUB1); 2470 goto out; 2471 } 2472 tty_putcode_i(tty, TTYC_CUB, change); 2473 goto out; 2474 } else if (change < 0 && 2475 tty_term_has(term, TTYC_CUF) && 2476 !tty_use_margin(tty)) { 2477 tty_putcode_i(tty, TTYC_CUF, -change); 2478 goto out; 2479 } 2480 } else if (cx == thisx) { 2481 /* 2482 * Moving row only, column staying the same. 2483 */ 2484 2485 /* One above. */ 2486 if (thisy != tty->rupper && 2487 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2488 tty_putcode(tty, TTYC_CUU1); 2489 goto out; 2490 } 2491 2492 /* One below. */ 2493 if (thisy != tty->rlower && 2494 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2495 tty_putcode(tty, TTYC_CUD1); 2496 goto out; 2497 } 2498 2499 /* Calculate difference. */ 2500 change = thisy - cy; /* +ve up, -ve down */ 2501 2502 /* 2503 * Try to use VPA if change is larger than absolute or if this 2504 * change would cross the scroll region, otherwise use CUU/CUD. 2505 */ 2506 if ((u_int) abs(change) > cy || 2507 (change < 0 && cy - change > tty->rlower) || 2508 (change > 0 && cy - change < tty->rupper)) { 2509 if (tty_term_has(term, TTYC_VPA)) { 2510 tty_putcode_i(tty, TTYC_VPA, cy); 2511 goto out; 2512 } 2513 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2514 tty_putcode_i(tty, TTYC_CUU, change); 2515 goto out; 2516 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2517 tty_putcode_i(tty, TTYC_CUD, -change); 2518 goto out; 2519 } 2520 } 2521 2522absolute: 2523 /* Absolute movement. */ 2524 tty_putcode_ii(tty, TTYC_CUP, cy, cx); 2525 2526out: 2527 tty->cx = cx; 2528 tty->cy = cy; 2529} 2530 2531static void 2532tty_hyperlink(struct tty *tty, const struct grid_cell *gc, 2533 struct hyperlinks *hl) 2534{ 2535 const char *uri, *id; 2536 2537 if (gc->link == tty->cell.link) 2538 return; 2539 tty->cell.link = gc->link; 2540 2541 if (hl == NULL) 2542 return; 2543 2544 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id)) 2545 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2546 else 2547 tty_putcode_ss(tty, TTYC_HLS, id, uri); 2548} 2549 2550void 2551tty_attributes(struct tty *tty, const struct grid_cell *gc, 2552 const struct grid_cell *defaults, struct colour_palette *palette, 2553 struct hyperlinks *hl) 2554{ 2555 struct grid_cell *tc = &tty->cell, gc2; 2556 int changed; 2557 2558 /* Copy cell and update default colours. */ 2559 memcpy(&gc2, gc, sizeof gc2); 2560 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2561 if (gc2.fg == 8) 2562 gc2.fg = defaults->fg; 2563 if (gc2.bg == 8) 2564 gc2.bg = defaults->bg; 2565 } 2566 2567 /* Ignore cell if it is the same as the last one. */ 2568 if (gc2.attr == tty->last_cell.attr && 2569 gc2.fg == tty->last_cell.fg && 2570 gc2.bg == tty->last_cell.bg && 2571 gc2.us == tty->last_cell.us && 2572 gc2.link == tty->last_cell.link) 2573 return; 2574 2575 /* 2576 * If no setab, try to use the reverse attribute as a best-effort for a 2577 * non-default background. This is a bit of a hack but it doesn't do 2578 * any serious harm and makes a couple of applications happier. 2579 */ 2580 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2581 if (gc2.attr & GRID_ATTR_REVERSE) { 2582 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2583 gc2.attr &= ~GRID_ATTR_REVERSE; 2584 } else { 2585 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2586 gc2.attr |= GRID_ATTR_REVERSE; 2587 } 2588 } 2589 2590 /* Fix up the colours if necessary. */ 2591 tty_check_fg(tty, palette, &gc2); 2592 tty_check_bg(tty, palette, &gc2); 2593 tty_check_us(tty, palette, &gc2); 2594 2595 /* 2596 * If any bits are being cleared or the underline colour is now default, 2597 * reset everything. 2598 */ 2599 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2600 tty_reset(tty); 2601 2602 /* 2603 * Set the colours. This may call tty_reset() (so it comes next) and 2604 * may add to (NOT remove) the desired attributes. 2605 */ 2606 tty_colours(tty, &gc2); 2607 2608 /* Filter out attribute bits already set. */ 2609 changed = gc2.attr & ~tc->attr; 2610 tc->attr = gc2.attr; 2611 2612 /* Set the attributes. */ 2613 if (changed & GRID_ATTR_BRIGHT) 2614 tty_putcode(tty, TTYC_BOLD); 2615 if (changed & GRID_ATTR_DIM) 2616 tty_putcode(tty, TTYC_DIM); 2617 if (changed & GRID_ATTR_ITALICS) 2618 tty_set_italics(tty); 2619 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2620 if ((changed & GRID_ATTR_UNDERSCORE) || 2621 !tty_term_has(tty->term, TTYC_SMULX)) 2622 tty_putcode(tty, TTYC_SMUL); 2623 else if (changed & GRID_ATTR_UNDERSCORE_2) 2624 tty_putcode_i(tty, TTYC_SMULX, 2); 2625 else if (changed & GRID_ATTR_UNDERSCORE_3) 2626 tty_putcode_i(tty, TTYC_SMULX, 3); 2627 else if (changed & GRID_ATTR_UNDERSCORE_4) 2628 tty_putcode_i(tty, TTYC_SMULX, 4); 2629 else if (changed & GRID_ATTR_UNDERSCORE_5) 2630 tty_putcode_i(tty, TTYC_SMULX, 5); 2631 } 2632 if (changed & GRID_ATTR_BLINK) 2633 tty_putcode(tty, TTYC_BLINK); 2634 if (changed & GRID_ATTR_REVERSE) { 2635 if (tty_term_has(tty->term, TTYC_REV)) 2636 tty_putcode(tty, TTYC_REV); 2637 else if (tty_term_has(tty->term, TTYC_SMSO)) 2638 tty_putcode(tty, TTYC_SMSO); 2639 } 2640 if (changed & GRID_ATTR_HIDDEN) 2641 tty_putcode(tty, TTYC_INVIS); 2642 if (changed & GRID_ATTR_STRIKETHROUGH) 2643 tty_putcode(tty, TTYC_SMXX); 2644 if (changed & GRID_ATTR_OVERLINE) 2645 tty_putcode(tty, TTYC_SMOL); 2646 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2647 tty_putcode(tty, TTYC_SMACS); 2648 2649 /* Set hyperlink if any. */ 2650 tty_hyperlink(tty, gc, hl); 2651 2652 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2653} 2654 2655static void 2656tty_colours(struct tty *tty, const struct grid_cell *gc) 2657{ 2658 struct grid_cell *tc = &tty->cell; 2659 int have_ax; 2660 2661 /* No changes? Nothing is necessary. */ 2662 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2663 return; 2664 2665 /* 2666 * Is either the default colour? This is handled specially because the 2667 * best solution might be to reset both colours to default, in which 2668 * case if only one is default need to fall onward to set the other 2669 * colour. 2670 */ 2671 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2672 /* 2673 * If don't have AX but do have op, send sgr0 (op can't 2674 * actually be used because it is sometimes the same as sgr0 2675 * and sometimes isn't). This resets both colours to default. 2676 * 2677 * Otherwise, try to set the default colour only as needed. 2678 */ 2679 have_ax = tty_term_flag(tty->term, TTYC_AX); 2680 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2681 tty_reset(tty); 2682 else { 2683 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2684 if (have_ax) 2685 tty_puts(tty, "\033[39m"); 2686 else if (tc->fg != 7) 2687 tty_putcode_i(tty, TTYC_SETAF, 7); 2688 tc->fg = gc->fg; 2689 } 2690 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2691 if (have_ax) 2692 tty_puts(tty, "\033[49m"); 2693 else if (tc->bg != 0) 2694 tty_putcode_i(tty, TTYC_SETAB, 0); 2695 tc->bg = gc->bg; 2696 } 2697 } 2698 } 2699 2700 /* Set the foreground colour. */ 2701 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2702 tty_colours_fg(tty, gc); 2703 2704 /* 2705 * Set the background colour. This must come after the foreground as 2706 * tty_colour_fg() can call tty_reset(). 2707 */ 2708 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2709 tty_colours_bg(tty, gc); 2710 2711 /* Set the underscore colour. */ 2712 if (gc->us != tc->us) 2713 tty_colours_us(tty, gc); 2714} 2715 2716static void 2717tty_check_fg(struct tty *tty, struct colour_palette *palette, 2718 struct grid_cell *gc) 2719{ 2720 u_char r, g, b; 2721 u_int colours; 2722 int c; 2723 2724 /* 2725 * Perform substitution if this pane has a palette. If the bright 2726 * attribute is set and Nobr is not present, use the bright entry in 2727 * the palette by changing to the aixterm colour 2728 */ 2729 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2730 c = gc->fg; 2731 if (c < 8 && 2732 gc->attr & GRID_ATTR_BRIGHT && 2733 !tty_term_has(tty->term, TTYC_NOBR)) 2734 c += 90; 2735 if ((c = colour_palette_get(palette, c)) != -1) 2736 gc->fg = c; 2737 } 2738 2739 /* Is this a 24-bit colour? */ 2740 if (gc->fg & COLOUR_FLAG_RGB) { 2741 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2742 if (tty->term->flags & TERM_RGBCOLOURS) 2743 return; 2744 colour_split_rgb(gc->fg, &r, &g, &b); 2745 gc->fg = colour_find_rgb(r, g, b); 2746 } 2747 2748 /* How many colours does this terminal have? */ 2749 if (tty->term->flags & TERM_256COLOURS) 2750 colours = 256; 2751 else 2752 colours = tty_term_number(tty->term, TTYC_COLORS); 2753 2754 /* Is this a 256-colour colour? */ 2755 if (gc->fg & COLOUR_FLAG_256) { 2756 /* And not a 256 colour mode? */ 2757 if (colours < 256) { 2758 gc->fg = colour_256to16(gc->fg); 2759 if (gc->fg & 8) { 2760 gc->fg &= 7; 2761 if (colours >= 16) 2762 gc->fg += 90; 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 2775static void 2776tty_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 2827static void 2828tty_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 2848static void 2849tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2850{ 2851 struct grid_cell *tc = &tty->cell; 2852 char s[32]; 2853 2854 /* Is this a 24-bit or 256-colour colour? */ 2855 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2856 if (tty_try_colour(tty, gc->fg, "38") == 0) 2857 goto save; 2858 /* Should not get here, already converted in tty_check_fg. */ 2859 return; 2860 } 2861 2862 /* Is this an aixterm bright colour? */ 2863 if (gc->fg >= 90 && gc->fg <= 97) { 2864 if (tty->term->flags & TERM_256COLOURS) { 2865 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2866 tty_puts(tty, s); 2867 } else 2868 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8); 2869 goto save; 2870 } 2871 2872 /* Otherwise set the foreground colour. */ 2873 tty_putcode_i(tty, TTYC_SETAF, gc->fg); 2874 2875save: 2876 /* Save the new values in the terminal current cell. */ 2877 tc->fg = gc->fg; 2878} 2879 2880static void 2881tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2882{ 2883 struct grid_cell *tc = &tty->cell; 2884 char s[32]; 2885 2886 /* Is this a 24-bit or 256-colour colour? */ 2887 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2888 if (tty_try_colour(tty, gc->bg, "48") == 0) 2889 goto save; 2890 /* Should not get here, already converted in tty_check_bg. */ 2891 return; 2892 } 2893 2894 /* Is this an aixterm bright colour? */ 2895 if (gc->bg >= 90 && gc->bg <= 97) { 2896 if (tty->term->flags & TERM_256COLOURS) { 2897 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2898 tty_puts(tty, s); 2899 } else 2900 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8); 2901 goto save; 2902 } 2903 2904 /* Otherwise set the background colour. */ 2905 tty_putcode_i(tty, TTYC_SETAB, gc->bg); 2906 2907save: 2908 /* Save the new values in the terminal current cell. */ 2909 tc->bg = gc->bg; 2910} 2911 2912static void 2913tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2914{ 2915 struct grid_cell *tc = &tty->cell; 2916 u_int c; 2917 u_char r, g, b; 2918 2919 /* Clear underline colour. */ 2920 if (COLOUR_DEFAULT(gc->us)) { 2921 tty_putcode(tty, TTYC_OL); 2922 goto save; 2923 } 2924 2925 /* 2926 * If this is not an RGB colour, use Setulc1 if it exists, otherwise 2927 * convert. 2928 */ 2929 if (~gc->us & COLOUR_FLAG_RGB) { 2930 c = gc->us; 2931 if ((~c & COLOUR_FLAG_256) && (c >= 90 && c <= 97)) 2932 c -= 82; 2933 tty_putcode_i(tty, TTYC_SETULC1, c & ~COLOUR_FLAG_256); 2934 return; 2935 } 2936 2937 /* 2938 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2939 * capability format. Calculate the colour value. 2940 */ 2941 colour_split_rgb(gc->us, &r, &g, &b); 2942 c = (65536 * r) + (256 * g) + b; 2943 2944 /* 2945 * Write the colour. Only use setal if the RGB flag is set because the 2946 * non-RGB version may be wrong. 2947 */ 2948 if (tty_term_has(tty->term, TTYC_SETULC)) 2949 tty_putcode_i(tty, TTYC_SETULC, c); 2950 else if (tty_term_has(tty->term, TTYC_SETAL) && 2951 tty_term_has(tty->term, TTYC_RGB)) 2952 tty_putcode_i(tty, TTYC_SETAL, c); 2953 2954save: 2955 /* Save the new values in the terminal current cell. */ 2956 tc->us = gc->us; 2957} 2958 2959static int 2960tty_try_colour(struct tty *tty, int colour, const char *type) 2961{ 2962 u_char r, g, b; 2963 2964 if (colour & COLOUR_FLAG_256) { 2965 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2966 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff); 2967 else if (tty_term_has(tty->term, TTYC_SETAB)) 2968 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff); 2969 return (0); 2970 } 2971 2972 if (colour & COLOUR_FLAG_RGB) { 2973 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2974 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2975 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b); 2976 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2977 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b); 2978 return (0); 2979 } 2980 2981 return (-1); 2982} 2983 2984static void 2985tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2986{ 2987 memcpy(gc, &grid_default_cell, sizeof *gc); 2988 gc->fg = wp->palette.fg; 2989 gc->bg = wp->palette.bg; 2990} 2991 2992void 2993tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2994{ 2995 struct options *oo = wp->options; 2996 struct format_tree *ft; 2997 2998 memcpy(gc, &grid_default_cell, sizeof *gc); 2999 3000 if (wp->flags & PANE_STYLECHANGED) { 3001 log_debug("%%%u: style changed", wp->id); 3002 wp->flags &= ~PANE_STYLECHANGED; 3003 3004 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 3005 FORMAT_NOJOBS); 3006 format_defaults(ft, NULL, NULL, NULL, wp); 3007 tty_window_default_style(&wp->cached_active_gc, wp); 3008 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 3009 tty_window_default_style(&wp->cached_gc, wp); 3010 style_add(&wp->cached_gc, oo, "window-style", ft); 3011 format_free(ft); 3012 } 3013 3014 if (gc->fg == 8) { 3015 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 3016 gc->fg = wp->cached_active_gc.fg; 3017 else 3018 gc->fg = wp->cached_gc.fg; 3019 } 3020 3021 if (gc->bg == 8) { 3022 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 3023 gc->bg = wp->cached_active_gc.bg; 3024 else 3025 gc->bg = wp->cached_gc.bg; 3026 } 3027} 3028 3029static void 3030tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 3031 struct colour_palette *palette, u_int bg, struct hyperlinks *hl) 3032{ 3033 struct grid_cell gc; 3034 3035 memcpy(&gc, &grid_default_cell, sizeof gc); 3036 gc.bg = bg; 3037 tty_attributes(tty, &gc, defaults, palette, hl); 3038} 3039 3040static void 3041tty_clipboard_query_callback(__unused int fd, __unused short events, void *data) 3042{ 3043 struct tty *tty = data; 3044 struct client *c = tty->client; 3045 3046 c->flags &= ~CLIENT_CLIPBOARDBUFFER; 3047 free(c->clipboard_panes); 3048 c->clipboard_panes = NULL; 3049 c->clipboard_npanes = 0; 3050 3051 tty->flags &= ~TTY_OSC52QUERY; 3052} 3053 3054void 3055tty_clipboard_query(struct tty *tty) 3056{ 3057 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 3058 3059 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY)) 3060 return; 3061 tty_putcode_ss(tty, TTYC_MS, "", "?"); 3062 3063 tty->flags |= TTY_OSC52QUERY; 3064 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty); 3065 evtimer_add(&tty->clipboard_timer, &tv); 3066} 3067