1 /* $OpenBSD: tty.c,v 1.431 2023/06/26 07:17:40 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/ioctl.h> 21 22 #include <netinet/in.h> 23 24 #include <curses.h> 25 #include <errno.h> 26 #include <fcntl.h> 27 #include <resolv.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include <termios.h> 31 #include <unistd.h> 32 33 #include "tmux.h" 34 35 static int tty_log_fd = -1; 36 37 static void tty_set_italics(struct tty *); 38 static int tty_try_colour(struct tty *, int, const char *); 39 static void tty_force_cursor_colour(struct tty *, int); 40 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int, 41 u_int); 42 static void tty_cursor_pane_unless_wrap(struct tty *, 43 const struct tty_ctx *, u_int, u_int); 44 static void tty_invalidate(struct tty *); 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 86 void 87 tty_create_log(void) 88 { 89 char name[64]; 90 91 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid()); 92 93 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644); 94 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1) 95 fatal("fcntl failed"); 96 } 97 98 int 99 tty_init(struct tty *tty, struct client *c) 100 { 101 if (!isatty(c->fd)) 102 return (-1); 103 104 memset(tty, 0, sizeof *tty); 105 tty->client = c; 106 107 tty->cstyle = SCREEN_CURSOR_DEFAULT; 108 tty->ccolour = -1; 109 tty->fg = tty->bg = -1; 110 111 if (tcgetattr(c->fd, &tty->tio) != 0) 112 return (-1); 113 return (0); 114 } 115 116 void 117 tty_resize(struct tty *tty) 118 { 119 struct client *c = tty->client; 120 struct winsize ws; 121 u_int sx, sy, xpixel, ypixel; 122 123 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) { 124 sx = ws.ws_col; 125 if (sx == 0) { 126 sx = 80; 127 xpixel = 0; 128 } else 129 xpixel = ws.ws_xpixel / sx; 130 sy = ws.ws_row; 131 if (sy == 0) { 132 sy = 24; 133 ypixel = 0; 134 } else 135 ypixel = ws.ws_ypixel / sy; 136 } else { 137 sx = 80; 138 sy = 24; 139 xpixel = 0; 140 ypixel = 0; 141 } 142 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy, 143 xpixel, ypixel); 144 tty_set_size(tty, sx, sy, xpixel, ypixel); 145 tty_invalidate(tty); 146 } 147 148 void 149 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel) 150 { 151 tty->sx = sx; 152 tty->sy = sy; 153 tty->xpixel = xpixel; 154 tty->ypixel = ypixel; 155 } 156 157 static void 158 tty_read_callback(__unused int fd, __unused short events, void *data) 159 { 160 struct tty *tty = data; 161 struct client *c = tty->client; 162 const char *name = c->name; 163 size_t size = EVBUFFER_LENGTH(tty->in); 164 int nread; 165 166 nread = evbuffer_read(tty->in, c->fd, -1); 167 if (nread == 0 || nread == -1) { 168 if (nread == 0) 169 log_debug("%s: read closed", name); 170 else 171 log_debug("%s: read error: %s", name, strerror(errno)); 172 event_del(&tty->event_in); 173 server_client_lost(tty->client); 174 return; 175 } 176 log_debug("%s: read %d bytes (already %zu)", name, nread, size); 177 178 while (tty_keys_next(tty)) 179 ; 180 } 181 182 static void 183 tty_timer_callback(__unused int fd, __unused short events, void *data) 184 { 185 struct tty *tty = data; 186 struct client *c = tty->client; 187 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 188 189 log_debug("%s: %zu discarded", c->name, tty->discarded); 190 191 c->flags |= CLIENT_ALLREDRAWFLAGS; 192 c->discarded += tty->discarded; 193 194 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 195 tty->flags &= ~TTY_BLOCK; 196 tty_invalidate(tty); 197 return; 198 } 199 tty->discarded = 0; 200 evtimer_add(&tty->timer, &tv); 201 } 202 203 static int 204 tty_block_maybe(struct tty *tty) 205 { 206 struct client *c = tty->client; 207 size_t size = EVBUFFER_LENGTH(tty->out); 208 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 209 210 if (size == 0) 211 tty->flags &= ~TTY_NOBLOCK; 212 else if (tty->flags & TTY_NOBLOCK) 213 return (0); 214 215 if (size < TTY_BLOCK_START(tty)) 216 return (0); 217 218 if (tty->flags & TTY_BLOCK) 219 return (1); 220 tty->flags |= TTY_BLOCK; 221 222 log_debug("%s: can't keep up, %zu discarded", c->name, size); 223 224 evbuffer_drain(tty->out, size); 225 c->discarded += size; 226 227 tty->discarded = 0; 228 evtimer_add(&tty->timer, &tv); 229 return (1); 230 } 231 232 static void 233 tty_write_callback(__unused int fd, __unused short events, void *data) 234 { 235 struct tty *tty = data; 236 struct client *c = tty->client; 237 size_t size = EVBUFFER_LENGTH(tty->out); 238 int nwrite; 239 240 nwrite = evbuffer_write(tty->out, c->fd); 241 if (nwrite == -1) 242 return; 243 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 244 245 if (c->redraw > 0) { 246 if ((size_t)nwrite >= c->redraw) 247 c->redraw = 0; 248 else 249 c->redraw -= nwrite; 250 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 251 c->redraw); 252 } else if (tty_block_maybe(tty)) 253 return; 254 255 if (EVBUFFER_LENGTH(tty->out) != 0) 256 event_add(&tty->event_out, NULL); 257 } 258 259 int 260 tty_open(struct tty *tty, char **cause) 261 { 262 struct client *c = tty->client; 263 264 tty->term = tty_term_create(tty, c->term_name, c->term_caps, 265 c->term_ncaps, &c->term_features, cause); 266 if (tty->term == NULL) { 267 tty_close(tty); 268 return (-1); 269 } 270 tty->flags |= TTY_OPENED; 271 272 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 273 274 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ, 275 tty_read_callback, tty); 276 tty->in = evbuffer_new(); 277 if (tty->in == NULL) 278 fatal("out of memory"); 279 280 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty); 281 tty->out = evbuffer_new(); 282 if (tty->out == NULL) 283 fatal("out of memory"); 284 285 evtimer_set(&tty->timer, tty_timer_callback, tty); 286 287 tty_start_tty(tty); 288 tty_keys_build(tty); 289 290 return (0); 291 } 292 293 static void 294 tty_start_timer_callback(__unused int fd, __unused short events, void *data) 295 { 296 struct tty *tty = data; 297 struct client *c = tty->client; 298 299 log_debug("%s: start timer fired", c->name); 300 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0) 301 tty_update_features(tty); 302 tty->flags |= TTY_ALL_REQUEST_FLAGS; 303 } 304 305 void 306 tty_start_tty(struct tty *tty) 307 { 308 struct client *c = tty->client; 309 struct termios tio; 310 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 311 312 setblocking(c->fd, 0); 313 event_add(&tty->event_in, NULL); 314 315 memcpy(&tio, &tty->tio, sizeof tio); 316 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 317 tio.c_iflag |= IGNBRK; 318 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 319 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT| 320 ECHOKE|ISIG); 321 tio.c_cc[VMIN] = 1; 322 tio.c_cc[VTIME] = 0; 323 if (tcsetattr(c->fd, TCSANOW, &tio) == 0) 324 tcflush(c->fd, TCOFLUSH); 325 326 tty_putcode(tty, TTYC_SMCUP); 327 328 tty_putcode(tty, TTYC_SMKX); 329 tty_putcode(tty, TTYC_CLEAR); 330 331 if (tty_acs_needed(tty)) { 332 log_debug("%s: using capabilities for ACS", c->name); 333 tty_putcode(tty, TTYC_ENACS); 334 } else 335 log_debug("%s: using UTF-8 for ACS", c->name); 336 337 tty_putcode(tty, TTYC_CNORM); 338 if (tty_term_has(tty->term, TTYC_KMOUS)) { 339 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l"); 340 tty_puts(tty, "\033[?1006l\033[?1005l"); 341 } 342 if (tty_term_has(tty->term, TTYC_ENBP)) 343 tty_putcode(tty, TTYC_ENBP); 344 345 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 346 evtimer_add(&tty->start_timer, &tv); 347 348 tty->flags |= TTY_STARTED; 349 tty_invalidate(tty); 350 351 if (tty->ccolour != -1) 352 tty_force_cursor_colour(tty, -1); 353 354 tty->mouse_drag_flag = 0; 355 tty->mouse_drag_update = NULL; 356 tty->mouse_drag_release = NULL; 357 } 358 359 void 360 tty_send_requests(struct tty *tty) 361 { 362 if (~tty->flags & TTY_STARTED) 363 return; 364 365 if (tty->term->flags & TERM_VT100LIKE) { 366 if (~tty->term->flags & TTY_HAVEDA) 367 tty_puts(tty, "\033[c"); 368 if (~tty->flags & TTY_HAVEDA2) 369 tty_puts(tty, "\033[>c"); 370 if (~tty->flags & TTY_HAVEXDA) 371 tty_puts(tty, "\033[>q"); 372 if (~tty->flags & TTY_HAVEFG) 373 tty_puts(tty, "\033]10;?\033\\"); 374 if (~tty->flags & TTY_HAVEBG) 375 tty_puts(tty, "\033]11;?\033\\"); 376 } else 377 tty->flags |= TTY_ALL_REQUEST_FLAGS; 378 } 379 380 void 381 tty_stop_tty(struct tty *tty) 382 { 383 struct client *c = tty->client; 384 struct winsize ws; 385 386 if (!(tty->flags & TTY_STARTED)) 387 return; 388 tty->flags &= ~TTY_STARTED; 389 390 evtimer_del(&tty->start_timer); 391 392 event_del(&tty->timer); 393 tty->flags &= ~TTY_BLOCK; 394 395 event_del(&tty->event_in); 396 event_del(&tty->event_out); 397 398 /* 399 * Be flexible about error handling and try not kill the server just 400 * because the fd is invalid. Things like ssh -t can easily leave us 401 * with a dead tty. 402 */ 403 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 404 return; 405 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 406 return; 407 408 tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 409 if (tty_acs_needed(tty)) 410 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 411 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 412 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 413 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 414 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 415 if (tty_term_has(tty->term, TTYC_SE)) 416 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 417 else if (tty_term_has(tty->term, TTYC_SS)) 418 tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0)); 419 } 420 if (tty->ccolour != -1) 421 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 422 423 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 424 if (tty_term_has(tty->term, TTYC_KMOUS)) { 425 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 426 tty_raw(tty, "\033[?1006l\033[?1005l"); 427 } 428 if (tty_term_has(tty->term, TTYC_DSBP)) 429 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 430 431 if (tty->term->flags & TERM_VT100LIKE) 432 tty_raw(tty, "\033[?7727l"); 433 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 434 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 435 436 if (tty_use_margin(tty)) 437 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 438 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 439 440 setblocking(c->fd, 1); 441 } 442 443 void 444 tty_close(struct tty *tty) 445 { 446 if (event_initialized(&tty->key_timer)) 447 evtimer_del(&tty->key_timer); 448 tty_stop_tty(tty); 449 450 if (tty->flags & TTY_OPENED) { 451 evbuffer_free(tty->in); 452 event_del(&tty->event_in); 453 evbuffer_free(tty->out); 454 event_del(&tty->event_out); 455 456 tty_term_free(tty->term); 457 tty_keys_free(tty); 458 459 tty->flags &= ~TTY_OPENED; 460 } 461 } 462 463 void 464 tty_free(struct tty *tty) 465 { 466 tty_close(tty); 467 } 468 469 void 470 tty_update_features(struct tty *tty) 471 { 472 struct client *c = tty->client; 473 474 if (tty_apply_features(tty->term, c->term_features)) 475 tty_term_apply_overrides(tty->term); 476 477 if (tty_use_margin(tty)) 478 tty_putcode(tty, TTYC_ENMG); 479 if (options_get_number(global_options, "extended-keys")) 480 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 481 if (options_get_number(global_options, "focus-events")) 482 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 483 if (tty->term->flags & TERM_VT100LIKE) 484 tty_puts(tty, "\033[?7727h"); 485 486 /* 487 * Features might have changed since the first draw during attach. For 488 * example, this happens when DA responses are received. 489 */ 490 server_redraw_client(c); 491 492 tty_invalidate(tty); 493 } 494 495 void 496 tty_raw(struct tty *tty, const char *s) 497 { 498 struct client *c = tty->client; 499 ssize_t n, slen; 500 u_int i; 501 502 slen = strlen(s); 503 for (i = 0; i < 5; i++) { 504 n = write(c->fd, s, slen); 505 if (n >= 0) { 506 s += n; 507 slen -= n; 508 if (slen == 0) 509 break; 510 } else if (n == -1 && errno != EAGAIN) 511 break; 512 usleep(100); 513 } 514 } 515 516 void 517 tty_putcode(struct tty *tty, enum tty_code_code code) 518 { 519 tty_puts(tty, tty_term_string(tty->term, code)); 520 } 521 522 void 523 tty_putcode_i(struct tty *tty, enum tty_code_code code, int a) 524 { 525 if (a < 0) 526 return; 527 tty_puts(tty, tty_term_string_i(tty->term, code, a)); 528 } 529 530 void 531 tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b) 532 { 533 if (a < 0 || b < 0) 534 return; 535 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b)); 536 } 537 538 void 539 tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c) 540 { 541 if (a < 0 || b < 0 || c < 0) 542 return; 543 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c)); 544 } 545 546 void 547 tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a) 548 { 549 if (a != NULL) 550 tty_puts(tty, tty_term_string_s(tty->term, code, a)); 551 } 552 553 void 554 tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a, 555 const char *b) 556 { 557 if (a != NULL && b != NULL) 558 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b)); 559 } 560 561 static void 562 tty_add(struct tty *tty, const char *buf, size_t len) 563 { 564 struct client *c = tty->client; 565 566 if (tty->flags & TTY_BLOCK) { 567 tty->discarded += len; 568 return; 569 } 570 571 evbuffer_add(tty->out, buf, len); 572 log_debug("%s: %.*s", c->name, (int)len, buf); 573 c->written += len; 574 575 if (tty_log_fd != -1) 576 write(tty_log_fd, buf, len); 577 if (tty->flags & TTY_STARTED) 578 event_add(&tty->event_out, NULL); 579 } 580 581 void 582 tty_puts(struct tty *tty, const char *s) 583 { 584 if (*s != '\0') 585 tty_add(tty, s, strlen(s)); 586 } 587 588 void 589 tty_putc(struct tty *tty, u_char ch) 590 { 591 const char *acs; 592 593 if ((tty->term->flags & TERM_NOAM) && 594 ch >= 0x20 && ch != 0x7f && 595 tty->cy == tty->sy - 1 && 596 tty->cx + 1 >= tty->sx) 597 return; 598 599 if (tty->cell.attr & GRID_ATTR_CHARSET) { 600 acs = tty_acs_get(tty, ch); 601 if (acs != NULL) 602 tty_add(tty, acs, strlen(acs)); 603 else 604 tty_add(tty, &ch, 1); 605 } else 606 tty_add(tty, &ch, 1); 607 608 if (ch >= 0x20 && ch != 0x7f) { 609 if (tty->cx >= tty->sx) { 610 tty->cx = 1; 611 if (tty->cy != tty->rlower) 612 tty->cy++; 613 614 /* 615 * On !am terminals, force the cursor position to where 616 * we think it should be after a line wrap - this means 617 * it works on sensible terminals as well. 618 */ 619 if (tty->term->flags & TERM_NOAM) 620 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx); 621 } else 622 tty->cx++; 623 } 624 } 625 626 void 627 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 628 { 629 if ((tty->term->flags & TERM_NOAM) && 630 tty->cy == tty->sy - 1 && 631 tty->cx + len >= tty->sx) 632 len = tty->sx - tty->cx - 1; 633 634 tty_add(tty, buf, len); 635 if (tty->cx + width > tty->sx) { 636 tty->cx = (tty->cx + width) - tty->sx; 637 if (tty->cx <= tty->sx) 638 tty->cy++; 639 else 640 tty->cx = tty->cy = UINT_MAX; 641 } else 642 tty->cx += width; 643 } 644 645 static void 646 tty_set_italics(struct tty *tty) 647 { 648 const char *s; 649 650 if (tty_term_has(tty->term, TTYC_SITM)) { 651 s = options_get_string(global_options, "default-terminal"); 652 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 653 tty_putcode(tty, TTYC_SITM); 654 return; 655 } 656 } 657 tty_putcode(tty, TTYC_SMSO); 658 } 659 660 void 661 tty_set_title(struct tty *tty, const char *title) 662 { 663 if (!tty_term_has(tty->term, TTYC_TSL) || 664 !tty_term_has(tty->term, TTYC_FSL)) 665 return; 666 667 tty_putcode(tty, TTYC_TSL); 668 tty_puts(tty, title); 669 tty_putcode(tty, TTYC_FSL); 670 } 671 672 void 673 tty_set_path(struct tty *tty, const char *title) 674 { 675 if (!tty_term_has(tty->term, TTYC_SWD) || 676 !tty_term_has(tty->term, TTYC_FSL)) 677 return; 678 679 tty_putcode(tty, TTYC_SWD); 680 tty_puts(tty, title); 681 tty_putcode(tty, TTYC_FSL); 682 } 683 684 static void 685 tty_force_cursor_colour(struct tty *tty, int c) 686 { 687 u_char r, g, b; 688 char s[13]; 689 690 if (c != -1) 691 c = colour_force_rgb(c); 692 if (c == tty->ccolour) 693 return; 694 if (c == -1) 695 tty_putcode(tty, TTYC_CR); 696 else { 697 colour_split_rgb(c, &r, &g, &b); 698 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b); 699 tty_putcode_s(tty, TTYC_CS, s); 700 } 701 tty->ccolour = c; 702 } 703 704 static int 705 tty_update_cursor(struct tty *tty, int mode, struct screen *s) 706 { 707 enum screen_cursor_style cstyle; 708 int ccolour, changed, cmode = mode; 709 710 /* Set cursor colour if changed. */ 711 if (s != NULL) { 712 ccolour = s->ccolour; 713 if (s->ccolour == -1) 714 ccolour = s->default_ccolour; 715 tty_force_cursor_colour(tty, ccolour); 716 } 717 718 /* If cursor is off, set as invisible. */ 719 if (~cmode & MODE_CURSOR) { 720 if (tty->mode & MODE_CURSOR) 721 tty_putcode(tty, TTYC_CIVIS); 722 return (cmode); 723 } 724 725 /* Check if blinking or very visible flag changed or style changed. */ 726 if (s == NULL) 727 cstyle = tty->cstyle; 728 else { 729 cstyle = s->cstyle; 730 if (cstyle == SCREEN_CURSOR_DEFAULT) { 731 if (~cmode & MODE_CURSOR_BLINKING_SET) { 732 if (s->default_mode & MODE_CURSOR_BLINKING) 733 cmode |= MODE_CURSOR_BLINKING; 734 else 735 cmode &= ~MODE_CURSOR_BLINKING; 736 } 737 cstyle = s->default_cstyle; 738 } 739 } 740 741 /* If nothing changed, do nothing. */ 742 changed = cmode ^ tty->mode; 743 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 744 return (cmode); 745 746 /* 747 * Set cursor style. If an explicit style has been set with DECSCUSR, 748 * set it if supported, otherwise send cvvis for blinking styles. 749 * 750 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 751 * if either the blinking or very visible flags are set. 752 */ 753 tty_putcode(tty, TTYC_CNORM); 754 switch (cstyle) { 755 case SCREEN_CURSOR_DEFAULT: 756 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 757 if (tty_term_has(tty->term, TTYC_SE)) 758 tty_putcode(tty, TTYC_SE); 759 else 760 tty_putcode_i(tty, TTYC_SS, 0); 761 } 762 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 763 tty_putcode(tty, TTYC_CVVIS); 764 break; 765 case SCREEN_CURSOR_BLOCK: 766 if (tty_term_has(tty->term, TTYC_SS)) { 767 if (cmode & MODE_CURSOR_BLINKING) 768 tty_putcode_i(tty, TTYC_SS, 1); 769 else 770 tty_putcode_i(tty, TTYC_SS, 2); 771 } else if (cmode & MODE_CURSOR_BLINKING) 772 tty_putcode(tty, TTYC_CVVIS); 773 break; 774 case SCREEN_CURSOR_UNDERLINE: 775 if (tty_term_has(tty->term, TTYC_SS)) { 776 if (cmode & MODE_CURSOR_BLINKING) 777 tty_putcode_i(tty, TTYC_SS, 3); 778 else 779 tty_putcode_i(tty, TTYC_SS, 4); 780 } else if (cmode & MODE_CURSOR_BLINKING) 781 tty_putcode(tty, TTYC_CVVIS); 782 break; 783 case SCREEN_CURSOR_BAR: 784 if (tty_term_has(tty->term, TTYC_SS)) { 785 if (cmode & MODE_CURSOR_BLINKING) 786 tty_putcode_i(tty, TTYC_SS, 5); 787 else 788 tty_putcode_i(tty, TTYC_SS, 6); 789 } else if (cmode & MODE_CURSOR_BLINKING) 790 tty_putcode(tty, TTYC_CVVIS); 791 break; 792 } 793 tty->cstyle = cstyle; 794 return (cmode); 795 } 796 797 void 798 tty_update_mode(struct tty *tty, int mode, struct screen *s) 799 { 800 struct tty_term *term = tty->term; 801 struct client *c = tty->client; 802 int changed; 803 804 if (tty->flags & TTY_NOCURSOR) 805 mode &= ~MODE_CURSOR; 806 807 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING) 808 mode |= MODE_CURSOR_BLINKING; 809 else 810 mode &= ~MODE_CURSOR_BLINKING; 811 812 changed = mode ^ tty->mode; 813 if (log_get_level() != 0 && changed != 0) { 814 log_debug("%s: current mode %s", c->name, 815 screen_mode_to_string(tty->mode)); 816 log_debug("%s: setting mode %s", c->name, 817 screen_mode_to_string(mode)); 818 } 819 820 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) { 821 /* 822 * If the mouse modes have changed, clear then all and apply 823 * again. There are differences in how terminals track the 824 * various bits. 825 */ 826 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l"); 827 if (mode & ALL_MOUSE_MODES) 828 tty_puts(tty, "\033[?1006h"); 829 if (mode & MODE_MOUSE_ALL) 830 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h"); 831 else if (mode & MODE_MOUSE_BUTTON) 832 tty_puts(tty, "\033[?1000h\033[?1002h"); 833 else if (mode & MODE_MOUSE_STANDARD) 834 tty_puts(tty, "\033[?1000h"); 835 } 836 tty->mode = mode; 837 } 838 839 static void 840 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 841 enum tty_code_code code1, u_int n) 842 { 843 if (tty_term_has(tty->term, code)) 844 tty_putcode_i(tty, code, n); 845 else { 846 while (n-- > 0) 847 tty_putcode(tty, code1); 848 } 849 } 850 851 static void 852 tty_repeat_space(struct tty *tty, u_int n) 853 { 854 static char s[500]; 855 856 if (*s != ' ') 857 memset(s, ' ', sizeof s); 858 859 while (n > sizeof s) { 860 tty_putn(tty, s, sizeof s, sizeof s); 861 n -= sizeof s; 862 } 863 if (n != 0) 864 tty_putn(tty, s, n, n); 865 } 866 867 /* Is this window bigger than the terminal? */ 868 int 869 tty_window_bigger(struct tty *tty) 870 { 871 struct client *c = tty->client; 872 struct window *w = c->session->curw->window; 873 874 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 875 } 876 877 /* What offset should this window be drawn at? */ 878 int 879 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 880 { 881 *ox = tty->oox; 882 *oy = tty->ooy; 883 *sx = tty->osx; 884 *sy = tty->osy; 885 886 return (tty->oflag); 887 } 888 889 /* What offset should this window be drawn at? */ 890 static int 891 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 892 { 893 struct client *c = tty->client; 894 struct window *w = c->session->curw->window; 895 struct window_pane *wp = server_client_get_pane(c); 896 u_int cx, cy, lines; 897 898 lines = status_line_size(c); 899 900 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 901 *ox = 0; 902 *oy = 0; 903 *sx = w->sx; 904 *sy = w->sy; 905 906 c->pan_window = NULL; 907 return (0); 908 } 909 910 *sx = tty->sx; 911 *sy = tty->sy - lines; 912 913 if (c->pan_window == w) { 914 if (*sx >= w->sx) 915 c->pan_ox = 0; 916 else if (c->pan_ox + *sx > w->sx) 917 c->pan_ox = w->sx - *sx; 918 *ox = c->pan_ox; 919 if (*sy >= w->sy) 920 c->pan_oy = 0; 921 else if (c->pan_oy + *sy > w->sy) 922 c->pan_oy = w->sy - *sy; 923 *oy = c->pan_oy; 924 return (1); 925 } 926 927 if (~wp->screen->mode & MODE_CURSOR) { 928 *ox = 0; 929 *oy = 0; 930 } else { 931 cx = wp->xoff + wp->screen->cx; 932 cy = wp->yoff + wp->screen->cy; 933 934 if (cx < *sx) 935 *ox = 0; 936 else if (cx > w->sx - *sx) 937 *ox = w->sx - *sx; 938 else 939 *ox = cx - *sx / 2; 940 941 if (cy < *sy) 942 *oy = 0; 943 else if (cy > w->sy - *sy) 944 *oy = w->sy - *sy; 945 else 946 *oy = cy - *sy / 2; 947 } 948 949 c->pan_window = NULL; 950 return (1); 951 } 952 953 /* Update stored offsets for a window and redraw if necessary. */ 954 void 955 tty_update_window_offset(struct window *w) 956 { 957 struct client *c; 958 959 TAILQ_FOREACH(c, &clients, entry) { 960 if (c->session != NULL && 961 c->session->curw != NULL && 962 c->session->curw->window == w) 963 tty_update_client_offset(c); 964 } 965 } 966 967 /* Update stored offsets for a client and redraw if necessary. */ 968 void 969 tty_update_client_offset(struct client *c) 970 { 971 u_int ox, oy, sx, sy; 972 973 if (~c->flags & CLIENT_TERMINAL) 974 return; 975 976 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 977 if (ox == c->tty.oox && 978 oy == c->tty.ooy && 979 sx == c->tty.osx && 980 sy == c->tty.osy) 981 return; 982 983 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 984 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 985 ox, oy, sx, sy); 986 987 c->tty.oox = ox; 988 c->tty.ooy = oy; 989 c->tty.osx = sx; 990 c->tty.osy = sy; 991 992 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 993 } 994 995 /* 996 * Is the region large enough to be worth redrawing once later rather than 997 * probably several times now? Currently yes if it is more than 50% of the 998 * pane. 999 */ 1000 static int 1001 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 1002 { 1003 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 1004 } 1005 1006 /* 1007 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 1008 * emulated. 1009 */ 1010 static int 1011 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 1012 { 1013 if (tty_term_flag(tty->term, TTYC_BCE)) 1014 return (0); 1015 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 1016 return (1); 1017 return (0); 1018 } 1019 1020 /* 1021 * Redraw scroll region using data from screen (already updated). Used when 1022 * CSR not supported, or window is a pane that doesn't take up the full 1023 * width of the terminal. 1024 */ 1025 static void 1026 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 1027 { 1028 struct client *c = tty->client; 1029 u_int i; 1030 1031 /* 1032 * If region is large, schedule a redraw. In most cases this is likely 1033 * to be followed by some more scrolling. 1034 */ 1035 if (tty_large_region(tty, ctx)) { 1036 log_debug("%s: %s large redraw", __func__, c->name); 1037 ctx->redraw_cb(ctx); 1038 return; 1039 } 1040 1041 for (i = ctx->orupper; i <= ctx->orlower; i++) 1042 tty_draw_pane(tty, ctx, i); 1043 } 1044 1045 /* Is this position visible in the pane? */ 1046 static int 1047 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1048 u_int py, u_int nx, u_int ny) 1049 { 1050 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1051 1052 if (!ctx->bigger) 1053 return (1); 1054 1055 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1056 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1057 return (0); 1058 return (1); 1059 } 1060 1061 /* Clamp line position to visible part of pane. */ 1062 static int 1063 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1064 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1065 { 1066 u_int xoff = ctx->rxoff + px; 1067 1068 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1069 return (0); 1070 *ry = ctx->yoff + py - ctx->woy; 1071 1072 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1073 /* All visible. */ 1074 *i = 0; 1075 *x = ctx->xoff + px - ctx->wox; 1076 *rx = nx; 1077 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1078 /* Both left and right not visible. */ 1079 *i = ctx->wox; 1080 *x = 0; 1081 *rx = ctx->wsx; 1082 } else if (xoff < ctx->wox) { 1083 /* Left not visible. */ 1084 *i = ctx->wox - (ctx->xoff + px); 1085 *x = 0; 1086 *rx = nx - *i; 1087 } else { 1088 /* Right not visible. */ 1089 *i = 0; 1090 *x = (ctx->xoff + px) - ctx->wox; 1091 *rx = ctx->wsx - *x; 1092 } 1093 if (*rx > nx) 1094 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1095 1096 return (1); 1097 } 1098 1099 /* Clear a line. */ 1100 static void 1101 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1102 u_int px, u_int nx, u_int bg) 1103 { 1104 struct client *c = tty->client; 1105 struct overlay_ranges r; 1106 u_int i; 1107 1108 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1109 1110 /* Nothing to clear. */ 1111 if (nx == 0) 1112 return; 1113 1114 /* If genuine BCE is available, can try escape sequences. */ 1115 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1116 /* Off the end of the line, use EL if available. */ 1117 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1118 tty_cursor(tty, px, py); 1119 tty_putcode(tty, TTYC_EL); 1120 return; 1121 } 1122 1123 /* At the start of the line. Use EL1. */ 1124 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1125 tty_cursor(tty, px + nx - 1, py); 1126 tty_putcode(tty, TTYC_EL1); 1127 return; 1128 } 1129 1130 /* Section of line. Use ECH if possible. */ 1131 if (tty_term_has(tty->term, TTYC_ECH)) { 1132 tty_cursor(tty, px, py); 1133 tty_putcode_i(tty, TTYC_ECH, nx); 1134 return; 1135 } 1136 } 1137 1138 /* 1139 * Couldn't use an escape sequence, use spaces. Clear only the visible 1140 * bit if there is an overlay. 1141 */ 1142 tty_check_overlay_range(tty, px, py, nx, &r); 1143 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 1144 if (r.nx[i] == 0) 1145 continue; 1146 tty_cursor(tty, r.px[i], py); 1147 tty_repeat_space(tty, r.nx[i]); 1148 } 1149 } 1150 1151 /* Clear a line, adjusting to visible part of pane. */ 1152 static void 1153 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1154 u_int px, u_int nx, u_int bg) 1155 { 1156 struct client *c = tty->client; 1157 u_int i, x, rx, ry; 1158 1159 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1160 1161 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1162 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1163 } 1164 1165 /* Clamp area position to visible part of pane. */ 1166 static int 1167 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1168 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1169 u_int *ry) 1170 { 1171 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1172 1173 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1174 return (0); 1175 1176 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1177 /* All visible. */ 1178 *i = 0; 1179 *x = ctx->xoff + px - ctx->wox; 1180 *rx = nx; 1181 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1182 /* Both left and right not visible. */ 1183 *i = ctx->wox; 1184 *x = 0; 1185 *rx = ctx->wsx; 1186 } else if (xoff < ctx->wox) { 1187 /* Left not visible. */ 1188 *i = ctx->wox - (ctx->xoff + px); 1189 *x = 0; 1190 *rx = nx - *i; 1191 } else { 1192 /* Right not visible. */ 1193 *i = 0; 1194 *x = (ctx->xoff + px) - ctx->wox; 1195 *rx = ctx->wsx - *x; 1196 } 1197 if (*rx > nx) 1198 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1199 1200 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1201 /* All visible. */ 1202 *j = 0; 1203 *y = ctx->yoff + py - ctx->woy; 1204 *ry = ny; 1205 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1206 /* Both top and bottom not visible. */ 1207 *j = ctx->woy; 1208 *y = 0; 1209 *ry = ctx->wsy; 1210 } else if (yoff < ctx->woy) { 1211 /* Top not visible. */ 1212 *j = ctx->woy - (ctx->yoff + py); 1213 *y = 0; 1214 *ry = ny - *j; 1215 } else { 1216 /* Bottom not visible. */ 1217 *j = 0; 1218 *y = (ctx->yoff + py) - ctx->woy; 1219 *ry = ctx->wsy - *y; 1220 } 1221 if (*ry > ny) 1222 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1223 1224 return (1); 1225 } 1226 1227 /* Clear an area, adjusting to visible part of pane. */ 1228 static void 1229 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1230 u_int ny, u_int px, u_int nx, u_int bg) 1231 { 1232 struct client *c = tty->client; 1233 u_int yy; 1234 char tmp[64]; 1235 1236 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1237 1238 /* Nothing to clear. */ 1239 if (nx == 0 || ny == 0) 1240 return; 1241 1242 /* If genuine BCE is available, can try escape sequences. */ 1243 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1244 /* Use ED if clearing off the bottom of the terminal. */ 1245 if (px == 0 && 1246 px + nx >= tty->sx && 1247 py + ny >= tty->sy && 1248 tty_term_has(tty->term, TTYC_ED)) { 1249 tty_cursor(tty, 0, py); 1250 tty_putcode(tty, TTYC_ED); 1251 return; 1252 } 1253 1254 /* 1255 * On VT420 compatible terminals we can use DECFRA if the 1256 * background colour isn't default (because it doesn't work 1257 * after SGR 0). 1258 */ 1259 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1260 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1261 py + 1, px + 1, py + ny, px + nx); 1262 tty_puts(tty, tmp); 1263 return; 1264 } 1265 1266 /* Full lines can be scrolled away to clear them. */ 1267 if (px == 0 && 1268 px + nx >= tty->sx && 1269 ny > 2 && 1270 tty_term_has(tty->term, TTYC_CSR) && 1271 tty_term_has(tty->term, TTYC_INDN)) { 1272 tty_region(tty, py, py + ny - 1); 1273 tty_margin_off(tty); 1274 tty_putcode_i(tty, TTYC_INDN, ny); 1275 return; 1276 } 1277 1278 /* 1279 * If margins are supported, can just scroll the area off to 1280 * clear it. 1281 */ 1282 if (nx > 2 && 1283 ny > 2 && 1284 tty_term_has(tty->term, TTYC_CSR) && 1285 tty_use_margin(tty) && 1286 tty_term_has(tty->term, TTYC_INDN)) { 1287 tty_region(tty, py, py + ny - 1); 1288 tty_margin(tty, px, px + nx - 1); 1289 tty_putcode_i(tty, TTYC_INDN, ny); 1290 return; 1291 } 1292 } 1293 1294 /* Couldn't use an escape sequence, loop over the lines. */ 1295 for (yy = py; yy < py + ny; yy++) 1296 tty_clear_line(tty, defaults, yy, px, nx, bg); 1297 } 1298 1299 /* Clear an area in a pane. */ 1300 static void 1301 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1302 u_int ny, u_int px, u_int nx, u_int bg) 1303 { 1304 u_int i, j, x, y, rx, ry; 1305 1306 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1307 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1308 } 1309 1310 static void 1311 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1312 { 1313 struct screen *s = ctx->s; 1314 u_int nx = ctx->sx, i, x, rx, ry; 1315 1316 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1317 1318 if (!ctx->bigger) { 1319 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1320 &ctx->defaults, ctx->palette); 1321 return; 1322 } 1323 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1324 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1325 ctx->palette); 1326 } 1327 } 1328 1329 static const struct grid_cell * 1330 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1331 { 1332 static struct grid_cell new; 1333 int c; 1334 1335 /* Characters less than 0x7f are always fine, no matter what. */ 1336 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1337 return (gc); 1338 1339 /* UTF-8 terminal and a UTF-8 character - fine. */ 1340 if (tty->client->flags & CLIENT_UTF8) 1341 return (gc); 1342 memcpy(&new, gc, sizeof new); 1343 1344 /* See if this can be mapped to an ACS character. */ 1345 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1346 if (c != -1) { 1347 utf8_set(&new.data, c); 1348 new.attr |= GRID_ATTR_CHARSET; 1349 return (&new); 1350 } 1351 1352 /* Replace by the right number of underscores. */ 1353 new.data.size = gc->data.width; 1354 if (new.data.size > UTF8_SIZE) 1355 new.data.size = UTF8_SIZE; 1356 memset(new.data.data, '_', new.data.size); 1357 return (&new); 1358 } 1359 1360 /* 1361 * Check if a single character is obstructed by the overlay and return a 1362 * boolean. 1363 */ 1364 static int 1365 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1366 { 1367 struct overlay_ranges r; 1368 1369 /* 1370 * A unit width range will always return nx[2] == 0 from a check, even 1371 * with multiple overlays, so it's sufficient to check just the first 1372 * two entries. 1373 */ 1374 tty_check_overlay_range(tty, px, py, 1, &r); 1375 if (r.nx[0] + r.nx[1] == 0) 1376 return (0); 1377 return (1); 1378 } 1379 1380 /* Return parts of the input range which are visible. */ 1381 static void 1382 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx, 1383 struct overlay_ranges *r) 1384 { 1385 struct client *c = tty->client; 1386 1387 if (c->overlay_check == NULL) { 1388 r->px[0] = px; 1389 r->nx[0] = nx; 1390 r->px[1] = 0; 1391 r->nx[1] = 0; 1392 r->px[2] = 0; 1393 r->nx[2] = 0; 1394 return; 1395 } 1396 1397 c->overlay_check(c, c->overlay_data, px, py, nx, r); 1398 } 1399 1400 void 1401 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1402 u_int atx, u_int aty, const struct grid_cell *defaults, 1403 struct colour_palette *palette) 1404 { 1405 struct grid *gd = s->grid; 1406 struct grid_cell gc, last; 1407 const struct grid_cell *gcp; 1408 struct grid_line *gl; 1409 struct client *c = tty->client; 1410 struct overlay_ranges r; 1411 u_int i, j, ux, sx, width, hidden, eux, nxx; 1412 u_int cellsize; 1413 int flags, cleared = 0, wrapped = 0; 1414 char buf[512]; 1415 size_t len; 1416 1417 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1418 px, py, nx, atx, aty); 1419 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1420 defaults->bg); 1421 1422 /* 1423 * py is the line in the screen to draw. 1424 * px is the start x and nx is the width to draw. 1425 * atx,aty is the line on the terminal to draw it. 1426 */ 1427 1428 flags = (tty->flags & TTY_NOCURSOR); 1429 tty->flags |= TTY_NOCURSOR; 1430 tty_update_mode(tty, tty->mode, s); 1431 1432 tty_region_off(tty); 1433 tty_margin_off(tty); 1434 1435 /* 1436 * Clamp the width to cellsize - note this is not cellused, because 1437 * there may be empty background cells after it (from BCE). 1438 */ 1439 sx = screen_size_x(s); 1440 if (nx > sx) 1441 nx = sx; 1442 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1443 if (sx > cellsize) 1444 sx = cellsize; 1445 if (sx > tty->sx) 1446 sx = tty->sx; 1447 if (sx > nx) 1448 sx = nx; 1449 ux = 0; 1450 1451 if (py == 0) 1452 gl = NULL; 1453 else 1454 gl = grid_get_line(gd, gd->hsize + py - 1); 1455 if (gl == NULL || 1456 (~gl->flags & GRID_LINE_WRAPPED) || 1457 atx != 0 || 1458 tty->cx < tty->sx || 1459 nx < tty->sx) { 1460 if (nx < tty->sx && 1461 atx == 0 && 1462 px + sx != nx && 1463 tty_term_has(tty->term, TTYC_EL1) && 1464 !tty_fake_bce(tty, defaults, 8) && 1465 c->overlay_check == NULL) { 1466 tty_default_attributes(tty, defaults, palette, 8, 1467 s->hyperlinks); 1468 tty_cursor(tty, nx - 1, aty); 1469 tty_putcode(tty, TTYC_EL1); 1470 cleared = 1; 1471 } 1472 } else { 1473 log_debug("%s: wrapped line %u", __func__, aty); 1474 wrapped = 1; 1475 } 1476 1477 memcpy(&last, &grid_default_cell, sizeof last); 1478 len = 0; 1479 width = 0; 1480 1481 for (i = 0; i < sx; i++) { 1482 grid_view_get_cell(gd, px + i, py, &gc); 1483 gcp = tty_check_codeset(tty, &gc); 1484 if (len != 0 && 1485 (!tty_check_overlay(tty, atx + ux + width, aty) || 1486 (gcp->attr & GRID_ATTR_CHARSET) || 1487 gcp->flags != last.flags || 1488 gcp->attr != last.attr || 1489 gcp->fg != last.fg || 1490 gcp->bg != last.bg || 1491 gcp->us != last.us || 1492 gcp->link != last.link || 1493 ux + width + gcp->data.width > nx || 1494 (sizeof buf) - len < gcp->data.size)) { 1495 tty_attributes(tty, &last, defaults, palette, 1496 s->hyperlinks); 1497 if (last.flags & GRID_FLAG_CLEARED) { 1498 log_debug("%s: %zu cleared", __func__, len); 1499 tty_clear_line(tty, defaults, aty, atx + ux, 1500 width, last.bg); 1501 } else { 1502 if (!wrapped || atx != 0 || ux != 0) 1503 tty_cursor(tty, atx + ux, aty); 1504 tty_putn(tty, buf, len, width); 1505 } 1506 ux += width; 1507 1508 len = 0; 1509 width = 0; 1510 wrapped = 0; 1511 } 1512 1513 if (gcp->flags & GRID_FLAG_SELECTED) 1514 screen_select_cell(s, &last, gcp); 1515 else 1516 memcpy(&last, gcp, sizeof last); 1517 1518 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width, 1519 &r); 1520 hidden = 0; 1521 for (j = 0; j < OVERLAY_MAX_RANGES; j++) 1522 hidden += r.nx[j]; 1523 hidden = gcp->data.width - hidden; 1524 if (hidden != 0 && hidden == gcp->data.width) { 1525 if (~gcp->flags & GRID_FLAG_PADDING) 1526 ux += gcp->data.width; 1527 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1528 if (~gcp->flags & GRID_FLAG_PADDING) { 1529 tty_attributes(tty, &last, defaults, palette, 1530 s->hyperlinks); 1531 for (j = 0; j < OVERLAY_MAX_RANGES; j++) { 1532 if (r.nx[j] == 0) 1533 continue; 1534 /* Effective width drawn so far. */ 1535 eux = r.px[j] - atx; 1536 if (eux < nx) { 1537 tty_cursor(tty, r.px[j], aty); 1538 nxx = nx - eux; 1539 if (r.nx[j] > nxx) 1540 r.nx[j] = nxx; 1541 tty_repeat_space(tty, r.nx[j]); 1542 ux = eux + r.nx[j]; 1543 } 1544 } 1545 } 1546 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1547 tty_attributes(tty, &last, defaults, palette, 1548 s->hyperlinks); 1549 tty_cursor(tty, atx + ux, aty); 1550 for (j = 0; j < gcp->data.size; j++) 1551 tty_putc(tty, gcp->data.data[j]); 1552 ux += gcp->data.width; 1553 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1554 memcpy(buf + len, gcp->data.data, gcp->data.size); 1555 len += gcp->data.size; 1556 width += gcp->data.width; 1557 } 1558 } 1559 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1560 tty_attributes(tty, &last, defaults, palette, s->hyperlinks); 1561 if (last.flags & GRID_FLAG_CLEARED) { 1562 log_debug("%s: %zu cleared (end)", __func__, len); 1563 tty_clear_line(tty, defaults, aty, atx + ux, width, 1564 last.bg); 1565 } else { 1566 if (!wrapped || atx != 0 || ux != 0) 1567 tty_cursor(tty, atx + ux, aty); 1568 tty_putn(tty, buf, len, width); 1569 } 1570 ux += width; 1571 } 1572 1573 if (!cleared && ux < nx) { 1574 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1575 nx - ux, len); 1576 tty_default_attributes(tty, defaults, palette, 8, 1577 s->hyperlinks); 1578 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1579 } 1580 1581 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1582 tty_update_mode(tty, tty->mode, s); 1583 } 1584 1585 void 1586 tty_sync_start(struct tty *tty) 1587 { 1588 if (tty->flags & TTY_BLOCK) 1589 return; 1590 if (tty->flags & TTY_SYNCING) 1591 return; 1592 tty->flags |= TTY_SYNCING; 1593 1594 if (tty_term_has(tty->term, TTYC_SYNC)) { 1595 log_debug("%s sync start", tty->client->name); 1596 tty_putcode_i(tty, TTYC_SYNC, 1); 1597 } 1598 } 1599 1600 void 1601 tty_sync_end(struct tty *tty) 1602 { 1603 if (tty->flags & TTY_BLOCK) 1604 return; 1605 if (~tty->flags & TTY_SYNCING) 1606 return; 1607 tty->flags &= ~TTY_SYNCING; 1608 1609 if (tty_term_has(tty->term, TTYC_SYNC)) { 1610 log_debug("%s sync end", tty->client->name); 1611 tty_putcode_i(tty, TTYC_SYNC, 2); 1612 } 1613 } 1614 1615 static int 1616 tty_client_ready(const struct tty_ctx *ctx, struct client *c) 1617 { 1618 if (c->session == NULL || c->tty.term == NULL) 1619 return (0); 1620 if (c->flags & CLIENT_SUSPENDED) 1621 return (0); 1622 1623 /* 1624 * If invisible panes are allowed (used for passthrough), don't care if 1625 * redrawing or frozen. 1626 */ 1627 if (ctx->allow_invisible_panes) 1628 return (1); 1629 1630 if (c->flags & CLIENT_REDRAWWINDOW) 1631 return (0); 1632 if (c->tty.flags & TTY_FREEZE) 1633 return (0); 1634 return (1); 1635 } 1636 1637 void 1638 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1639 struct tty_ctx *ctx) 1640 { 1641 struct client *c; 1642 int state; 1643 1644 if (ctx->set_client_cb == NULL) 1645 return; 1646 TAILQ_FOREACH(c, &clients, entry) { 1647 if (tty_client_ready(ctx, c)) { 1648 state = ctx->set_client_cb(ctx, c); 1649 if (state == -1) 1650 break; 1651 if (state == 0) 1652 continue; 1653 cmdfn(&c->tty, ctx); 1654 } 1655 } 1656 } 1657 1658 void 1659 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1660 { 1661 struct client *c = tty->client; 1662 1663 if (ctx->bigger || 1664 !tty_full_width(tty, ctx) || 1665 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1666 (!tty_term_has(tty->term, TTYC_ICH) && 1667 !tty_term_has(tty->term, TTYC_ICH1)) || 1668 c->overlay_check != NULL) { 1669 tty_draw_pane(tty, ctx, ctx->ocy); 1670 return; 1671 } 1672 1673 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1674 ctx->s->hyperlinks); 1675 1676 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1677 1678 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1679 } 1680 1681 void 1682 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1683 { 1684 struct client *c = tty->client; 1685 1686 if (ctx->bigger || 1687 !tty_full_width(tty, ctx) || 1688 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1689 (!tty_term_has(tty->term, TTYC_DCH) && 1690 !tty_term_has(tty->term, TTYC_DCH1)) || 1691 c->overlay_check != NULL) { 1692 tty_draw_pane(tty, ctx, ctx->ocy); 1693 return; 1694 } 1695 1696 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1697 ctx->s->hyperlinks); 1698 1699 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1700 1701 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1702 } 1703 1704 void 1705 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1706 { 1707 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1708 ctx->s->hyperlinks); 1709 1710 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1711 } 1712 1713 void 1714 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1715 { 1716 struct client *c = tty->client; 1717 1718 if (ctx->bigger || 1719 !tty_full_width(tty, ctx) || 1720 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1721 !tty_term_has(tty->term, TTYC_CSR) || 1722 !tty_term_has(tty->term, TTYC_IL1) || 1723 ctx->sx == 1 || 1724 ctx->sy == 1 || 1725 c->overlay_check != NULL) { 1726 tty_redraw_region(tty, ctx); 1727 return; 1728 } 1729 1730 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1731 ctx->s->hyperlinks); 1732 1733 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1734 tty_margin_off(tty); 1735 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1736 1737 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1738 tty->cx = tty->cy = UINT_MAX; 1739 } 1740 1741 void 1742 tty_cmd_deleteline(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_DL1) || 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_DL, TTYC_DL1, ctx->num); 1766 tty->cx = tty->cy = UINT_MAX; 1767 } 1768 1769 void 1770 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1771 { 1772 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1773 ctx->s->hyperlinks); 1774 1775 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1776 } 1777 1778 void 1779 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1780 { 1781 u_int nx = ctx->sx - ctx->ocx; 1782 1783 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1784 ctx->s->hyperlinks); 1785 1786 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1787 } 1788 1789 void 1790 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1791 { 1792 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1793 ctx->s->hyperlinks); 1794 1795 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1796 } 1797 1798 void 1799 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1800 { 1801 struct client *c = tty->client; 1802 1803 if (ctx->ocy != ctx->orupper) 1804 return; 1805 1806 if (ctx->bigger || 1807 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1808 tty_fake_bce(tty, &ctx->defaults, 8) || 1809 !tty_term_has(tty->term, TTYC_CSR) || 1810 (!tty_term_has(tty->term, TTYC_RI) && 1811 !tty_term_has(tty->term, TTYC_RIN)) || 1812 ctx->sx == 1 || 1813 ctx->sy == 1 || 1814 c->overlay_check != NULL) { 1815 tty_redraw_region(tty, ctx); 1816 return; 1817 } 1818 1819 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1820 ctx->s->hyperlinks); 1821 1822 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1823 tty_margin_pane(tty, ctx); 1824 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1825 1826 if (tty_term_has(tty->term, TTYC_RI)) 1827 tty_putcode(tty, TTYC_RI); 1828 else 1829 tty_putcode_i(tty, TTYC_RIN, 1); 1830 } 1831 1832 void 1833 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1834 { 1835 struct client *c = tty->client; 1836 1837 if (ctx->ocy != ctx->orlower) 1838 return; 1839 1840 if (ctx->bigger || 1841 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1842 tty_fake_bce(tty, &ctx->defaults, 8) || 1843 !tty_term_has(tty->term, TTYC_CSR) || 1844 ctx->sx == 1 || 1845 ctx->sy == 1 || 1846 c->overlay_check != NULL) { 1847 tty_redraw_region(tty, ctx); 1848 return; 1849 } 1850 1851 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1852 ctx->s->hyperlinks); 1853 1854 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1855 tty_margin_pane(tty, ctx); 1856 1857 /* 1858 * If we want to wrap a pane while using margins, the cursor needs to 1859 * be exactly on the right of the region. If the cursor is entirely off 1860 * the edge - move it back to the right. Some terminals are funny about 1861 * this and insert extra spaces, so only use the right if margins are 1862 * enabled. 1863 */ 1864 if (ctx->xoff + ctx->ocx > tty->rright) { 1865 if (!tty_use_margin(tty)) 1866 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1867 else 1868 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1869 } else 1870 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1871 1872 tty_putc(tty, '\n'); 1873 } 1874 1875 void 1876 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1877 { 1878 struct client *c = tty->client; 1879 u_int i; 1880 1881 if (ctx->bigger || 1882 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1883 tty_fake_bce(tty, &ctx->defaults, 8) || 1884 !tty_term_has(tty->term, TTYC_CSR) || 1885 ctx->sx == 1 || 1886 ctx->sy == 1 || 1887 c->overlay_check != NULL) { 1888 tty_redraw_region(tty, ctx); 1889 return; 1890 } 1891 1892 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1893 ctx->s->hyperlinks); 1894 1895 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1896 tty_margin_pane(tty, ctx); 1897 1898 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1899 if (!tty_use_margin(tty)) 1900 tty_cursor(tty, 0, tty->rlower); 1901 else 1902 tty_cursor(tty, tty->rright, tty->rlower); 1903 for (i = 0; i < ctx->num; i++) 1904 tty_putc(tty, '\n'); 1905 } else { 1906 if (tty->cy == UINT_MAX) 1907 tty_cursor(tty, 0, 0); 1908 else 1909 tty_cursor(tty, 0, tty->cy); 1910 tty_putcode_i(tty, TTYC_INDN, ctx->num); 1911 } 1912 } 1913 1914 void 1915 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1916 { 1917 u_int i; 1918 struct client *c = tty->client; 1919 1920 if (ctx->bigger || 1921 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1922 tty_fake_bce(tty, &ctx->defaults, 8) || 1923 !tty_term_has(tty->term, TTYC_CSR) || 1924 (!tty_term_has(tty->term, TTYC_RI) && 1925 !tty_term_has(tty->term, TTYC_RIN)) || 1926 ctx->sx == 1 || 1927 ctx->sy == 1 || 1928 c->overlay_check != NULL) { 1929 tty_redraw_region(tty, ctx); 1930 return; 1931 } 1932 1933 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1934 ctx->s->hyperlinks); 1935 1936 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1937 tty_margin_pane(tty, ctx); 1938 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1939 1940 if (tty_term_has(tty->term, TTYC_RIN)) 1941 tty_putcode_i(tty, TTYC_RIN, ctx->num); 1942 else { 1943 for (i = 0; i < ctx->num; i++) 1944 tty_putcode(tty, TTYC_RI); 1945 } 1946 } 1947 1948 void 1949 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1950 { 1951 u_int px, py, nx, ny; 1952 1953 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1954 ctx->s->hyperlinks); 1955 1956 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1957 tty_margin_off(tty); 1958 1959 px = 0; 1960 nx = ctx->sx; 1961 py = ctx->ocy + 1; 1962 ny = ctx->sy - ctx->ocy - 1; 1963 1964 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1965 1966 px = ctx->ocx; 1967 nx = ctx->sx - ctx->ocx; 1968 py = ctx->ocy; 1969 1970 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1971 } 1972 1973 void 1974 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1975 { 1976 u_int px, py, nx, ny; 1977 1978 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1979 ctx->s->hyperlinks); 1980 1981 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1982 tty_margin_off(tty); 1983 1984 px = 0; 1985 nx = ctx->sx; 1986 py = 0; 1987 ny = ctx->ocy; 1988 1989 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1990 1991 px = 0; 1992 nx = ctx->ocx + 1; 1993 py = ctx->ocy; 1994 1995 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1996 } 1997 1998 void 1999 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 2000 { 2001 u_int px, py, nx, ny; 2002 2003 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2004 ctx->s->hyperlinks); 2005 2006 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2007 tty_margin_off(tty); 2008 2009 px = 0; 2010 nx = ctx->sx; 2011 py = 0; 2012 ny = ctx->sy; 2013 2014 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2015 } 2016 2017 void 2018 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 2019 { 2020 u_int i, j; 2021 2022 if (ctx->bigger) { 2023 ctx->redraw_cb(ctx); 2024 return; 2025 } 2026 2027 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette, 2028 ctx->s->hyperlinks); 2029 2030 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2031 tty_margin_off(tty); 2032 2033 for (j = 0; j < ctx->sy; j++) { 2034 tty_cursor_pane(tty, ctx, 0, j); 2035 for (i = 0; i < ctx->sx; i++) 2036 tty_putc(tty, 'E'); 2037 } 2038 } 2039 2040 void 2041 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 2042 { 2043 const struct grid_cell *gcp = ctx->cell; 2044 struct screen *s = ctx->s; 2045 struct overlay_ranges r; 2046 u_int px, py, i, vis = 0; 2047 2048 px = ctx->xoff + ctx->ocx - ctx->wox; 2049 py = ctx->yoff + ctx->ocy - ctx->woy; 2050 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 2051 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 2052 return; 2053 2054 /* Handle partially obstructed wide characters. */ 2055 if (gcp->data.width > 1) { 2056 tty_check_overlay_range(tty, px, py, gcp->data.width, &r); 2057 for (i = 0; i < OVERLAY_MAX_RANGES; i++) 2058 vis += r.nx[i]; 2059 if (vis < gcp->data.width) { 2060 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width, 2061 px, py, &ctx->defaults, ctx->palette); 2062 return; 2063 } 2064 } 2065 2066 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 2067 ctx->ocy == ctx->orlower && 2068 tty_full_width(tty, ctx)) 2069 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2070 2071 tty_margin_off(tty); 2072 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2073 2074 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette, 2075 ctx->s->hyperlinks); 2076 } 2077 2078 void 2079 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 2080 { 2081 struct overlay_ranges r; 2082 u_int i, px, py, cx; 2083 char *cp = ctx->ptr; 2084 2085 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 2086 return; 2087 2088 if (ctx->bigger && 2089 (ctx->xoff + ctx->ocx < ctx->wox || 2090 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 2091 if (!ctx->wrapped || 2092 !tty_full_width(tty, ctx) || 2093 (tty->term->flags & TERM_NOAM) || 2094 ctx->xoff + ctx->ocx != 0 || 2095 ctx->yoff + ctx->ocy != tty->cy + 1 || 2096 tty->cx < tty->sx || 2097 tty->cy == tty->rlower) 2098 tty_draw_pane(tty, ctx, ctx->ocy); 2099 else 2100 ctx->redraw_cb(ctx); 2101 return; 2102 } 2103 2104 tty_margin_off(tty); 2105 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2106 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks); 2107 2108 /* Get tty position from pane position for overlay check. */ 2109 px = ctx->xoff + ctx->ocx - ctx->wox; 2110 py = ctx->yoff + ctx->ocy - ctx->woy; 2111 2112 tty_check_overlay_range(tty, px, py, ctx->num, &r); 2113 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 2114 if (r.nx[i] == 0) 2115 continue; 2116 /* Convert back to pane position for printing. */ 2117 cx = r.px[i] - ctx->xoff + ctx->wox; 2118 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy); 2119 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]); 2120 } 2121 } 2122 2123 void 2124 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2125 { 2126 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num); 2127 } 2128 2129 void 2130 tty_set_selection(struct tty *tty, const char *flags, const char *buf, 2131 size_t len) 2132 { 2133 char *encoded; 2134 size_t size; 2135 2136 if (~tty->flags & TTY_STARTED) 2137 return; 2138 if (!tty_term_has(tty->term, TTYC_MS)) 2139 return; 2140 2141 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2142 encoded = xmalloc(size); 2143 2144 b64_ntop(buf, len, encoded, size); 2145 tty->flags |= TTY_NOBLOCK; 2146 tty_putcode_ss(tty, TTYC_MS, flags, encoded); 2147 2148 free(encoded); 2149 } 2150 2151 void 2152 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2153 { 2154 tty->flags |= TTY_NOBLOCK; 2155 tty_add(tty, ctx->ptr, ctx->num); 2156 tty_invalidate(tty); 2157 } 2158 2159 void 2160 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2161 { 2162 if (ctx->num == 0x11) { 2163 /* 2164 * This is an overlay and a command that moves the cursor so 2165 * start synchronized updates. 2166 */ 2167 tty_sync_start(tty); 2168 } else if (~ctx->num & 0x10) { 2169 /* 2170 * This is a pane. If there is an overlay, always start; 2171 * otherwise, only if requested. 2172 */ 2173 if (ctx->num || tty->client->overlay_draw != NULL) 2174 tty_sync_start(tty); 2175 } 2176 } 2177 2178 void 2179 tty_cell(struct tty *tty, const struct grid_cell *gc, 2180 const struct grid_cell *defaults, struct colour_palette *palette, 2181 struct hyperlinks *hl) 2182 { 2183 const struct grid_cell *gcp; 2184 2185 /* Skip last character if terminal is stupid. */ 2186 if ((tty->term->flags & TERM_NOAM) && 2187 tty->cy == tty->sy - 1 && 2188 tty->cx == tty->sx - 1) 2189 return; 2190 2191 /* If this is a padding character, do nothing. */ 2192 if (gc->flags & GRID_FLAG_PADDING) 2193 return; 2194 2195 /* Check the output codeset and apply attributes. */ 2196 gcp = tty_check_codeset(tty, gc); 2197 tty_attributes(tty, gcp, defaults, palette, hl); 2198 2199 /* If it is a single character, write with putc to handle ACS. */ 2200 if (gcp->data.size == 1) { 2201 tty_attributes(tty, gcp, defaults, palette, hl); 2202 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2203 return; 2204 tty_putc(tty, *gcp->data.data); 2205 return; 2206 } 2207 2208 /* Write the data. */ 2209 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2210 } 2211 2212 void 2213 tty_reset(struct tty *tty) 2214 { 2215 struct grid_cell *gc = &tty->cell; 2216 2217 if (!grid_cells_equal(gc, &grid_default_cell)) { 2218 if (gc->link != 0) 2219 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2220 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2221 tty_putcode(tty, TTYC_RMACS); 2222 tty_putcode(tty, TTYC_SGR0); 2223 memcpy(gc, &grid_default_cell, sizeof *gc); 2224 } 2225 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2226 } 2227 2228 static void 2229 tty_invalidate(struct tty *tty) 2230 { 2231 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2232 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2233 2234 tty->cx = tty->cy = UINT_MAX; 2235 tty->rupper = tty->rleft = UINT_MAX; 2236 tty->rlower = tty->rright = UINT_MAX; 2237 2238 if (tty->flags & TTY_STARTED) { 2239 if (tty_use_margin(tty)) 2240 tty_putcode(tty, TTYC_ENMG); 2241 tty_putcode(tty, TTYC_SGR0); 2242 2243 tty->mode = ALL_MODES; 2244 tty_update_mode(tty, MODE_CURSOR, NULL); 2245 2246 tty_cursor(tty, 0, 0); 2247 tty_region_off(tty); 2248 tty_margin_off(tty); 2249 } else 2250 tty->mode = MODE_CURSOR; 2251 } 2252 2253 /* Turn off margin. */ 2254 void 2255 tty_region_off(struct tty *tty) 2256 { 2257 tty_region(tty, 0, tty->sy - 1); 2258 } 2259 2260 /* Set region inside pane. */ 2261 static void 2262 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2263 u_int rlower) 2264 { 2265 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2266 ctx->yoff + rlower - ctx->woy); 2267 } 2268 2269 /* Set region at absolute position. */ 2270 static void 2271 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2272 { 2273 if (tty->rlower == rlower && tty->rupper == rupper) 2274 return; 2275 if (!tty_term_has(tty->term, TTYC_CSR)) 2276 return; 2277 2278 tty->rupper = rupper; 2279 tty->rlower = rlower; 2280 2281 /* 2282 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2283 * 0,0 if it is beyond the last column (they do not reset their wrap 2284 * flag so further output causes a line feed). As a workaround, do an 2285 * explicit move to 0 first. 2286 */ 2287 if (tty->cx >= tty->sx) { 2288 if (tty->cy == UINT_MAX) 2289 tty_cursor(tty, 0, 0); 2290 else 2291 tty_cursor(tty, 0, tty->cy); 2292 } 2293 2294 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2295 tty->cx = tty->cy = UINT_MAX; 2296 } 2297 2298 /* Turn off margin. */ 2299 void 2300 tty_margin_off(struct tty *tty) 2301 { 2302 tty_margin(tty, 0, tty->sx - 1); 2303 } 2304 2305 /* Set margin inside pane. */ 2306 static void 2307 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2308 { 2309 tty_margin(tty, ctx->xoff - ctx->wox, 2310 ctx->xoff + ctx->sx - 1 - ctx->wox); 2311 } 2312 2313 /* Set margin at absolute position. */ 2314 static void 2315 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2316 { 2317 if (!tty_use_margin(tty)) 2318 return; 2319 if (tty->rleft == rleft && tty->rright == rright) 2320 return; 2321 2322 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2323 2324 tty->rleft = rleft; 2325 tty->rright = rright; 2326 2327 if (rleft == 0 && rright == tty->sx - 1) 2328 tty_putcode(tty, TTYC_CLMG); 2329 else 2330 tty_putcode_ii(tty, TTYC_CMG, rleft, rright); 2331 tty->cx = tty->cy = UINT_MAX; 2332 } 2333 2334 /* 2335 * Move the cursor, unless it would wrap itself when the next character is 2336 * printed. 2337 */ 2338 static void 2339 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2340 u_int cx, u_int cy) 2341 { 2342 if (!ctx->wrapped || 2343 !tty_full_width(tty, ctx) || 2344 (tty->term->flags & TERM_NOAM) || 2345 ctx->xoff + cx != 0 || 2346 ctx->yoff + cy != tty->cy + 1 || 2347 tty->cx < tty->sx || 2348 tty->cy == tty->rlower) 2349 tty_cursor_pane(tty, ctx, cx, cy); 2350 else 2351 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2352 } 2353 2354 /* Move cursor inside pane. */ 2355 static void 2356 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2357 { 2358 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2359 } 2360 2361 /* Move cursor to absolute position. */ 2362 void 2363 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2364 { 2365 struct tty_term *term = tty->term; 2366 u_int thisx, thisy; 2367 int change; 2368 2369 if (tty->flags & TTY_BLOCK) 2370 return; 2371 2372 thisx = tty->cx; 2373 thisy = tty->cy; 2374 2375 /* 2376 * If in the automargin space, and want to be there, do not move. 2377 * Otherwise, force the cursor to be in range (and complain). 2378 */ 2379 if (cx == thisx && cy == thisy && cx == tty->sx) 2380 return; 2381 if (cx > tty->sx - 1) { 2382 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1); 2383 cx = tty->sx - 1; 2384 } 2385 2386 /* No change. */ 2387 if (cx == thisx && cy == thisy) 2388 return; 2389 2390 /* Currently at the very end of the line - use absolute movement. */ 2391 if (thisx > tty->sx - 1) 2392 goto absolute; 2393 2394 /* Move to home position (0, 0). */ 2395 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2396 tty_putcode(tty, TTYC_HOME); 2397 goto out; 2398 } 2399 2400 /* Zero on the next line. */ 2401 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2402 (!tty_use_margin(tty) || tty->rleft == 0)) { 2403 tty_putc(tty, '\r'); 2404 tty_putc(tty, '\n'); 2405 goto out; 2406 } 2407 2408 /* Moving column or row. */ 2409 if (cy == thisy) { 2410 /* 2411 * Moving column only, row staying the same. 2412 */ 2413 2414 /* To left edge. */ 2415 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2416 tty_putc(tty, '\r'); 2417 goto out; 2418 } 2419 2420 /* One to the left. */ 2421 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2422 tty_putcode(tty, TTYC_CUB1); 2423 goto out; 2424 } 2425 2426 /* One to the right. */ 2427 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2428 tty_putcode(tty, TTYC_CUF1); 2429 goto out; 2430 } 2431 2432 /* Calculate difference. */ 2433 change = thisx - cx; /* +ve left, -ve right */ 2434 2435 /* 2436 * Use HPA if change is larger than absolute, otherwise move 2437 * the cursor with CUB/CUF. 2438 */ 2439 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2440 tty_putcode_i(tty, TTYC_HPA, cx); 2441 goto out; 2442 } else if (change > 0 && 2443 tty_term_has(term, TTYC_CUB) && 2444 !tty_use_margin(tty)) { 2445 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2446 tty_putcode(tty, TTYC_CUB1); 2447 tty_putcode(tty, TTYC_CUB1); 2448 goto out; 2449 } 2450 tty_putcode_i(tty, TTYC_CUB, change); 2451 goto out; 2452 } else if (change < 0 && 2453 tty_term_has(term, TTYC_CUF) && 2454 !tty_use_margin(tty)) { 2455 tty_putcode_i(tty, TTYC_CUF, -change); 2456 goto out; 2457 } 2458 } else if (cx == thisx) { 2459 /* 2460 * Moving row only, column staying the same. 2461 */ 2462 2463 /* One above. */ 2464 if (thisy != tty->rupper && 2465 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2466 tty_putcode(tty, TTYC_CUU1); 2467 goto out; 2468 } 2469 2470 /* One below. */ 2471 if (thisy != tty->rlower && 2472 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2473 tty_putcode(tty, TTYC_CUD1); 2474 goto out; 2475 } 2476 2477 /* Calculate difference. */ 2478 change = thisy - cy; /* +ve up, -ve down */ 2479 2480 /* 2481 * Try to use VPA if change is larger than absolute or if this 2482 * change would cross the scroll region, otherwise use CUU/CUD. 2483 */ 2484 if ((u_int) abs(change) > cy || 2485 (change < 0 && cy - change > tty->rlower) || 2486 (change > 0 && cy - change < tty->rupper)) { 2487 if (tty_term_has(term, TTYC_VPA)) { 2488 tty_putcode_i(tty, TTYC_VPA, cy); 2489 goto out; 2490 } 2491 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2492 tty_putcode_i(tty, TTYC_CUU, change); 2493 goto out; 2494 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2495 tty_putcode_i(tty, TTYC_CUD, -change); 2496 goto out; 2497 } 2498 } 2499 2500 absolute: 2501 /* Absolute movement. */ 2502 tty_putcode_ii(tty, TTYC_CUP, cy, cx); 2503 2504 out: 2505 tty->cx = cx; 2506 tty->cy = cy; 2507 } 2508 2509 static void 2510 tty_hyperlink(struct tty *tty, const struct grid_cell *gc, 2511 struct hyperlinks *hl) 2512 { 2513 const char *uri, *id; 2514 2515 if (gc->link == tty->cell.link) 2516 return; 2517 tty->cell.link = gc->link; 2518 2519 if (hl == NULL) 2520 return; 2521 2522 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id)) 2523 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2524 else 2525 tty_putcode_ss(tty, TTYC_HLS, id, uri); 2526 } 2527 2528 void 2529 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2530 const struct grid_cell *defaults, struct colour_palette *palette, 2531 struct hyperlinks *hl) 2532 { 2533 struct grid_cell *tc = &tty->cell, gc2; 2534 int changed; 2535 2536 /* Copy cell and update default colours. */ 2537 memcpy(&gc2, gc, sizeof gc2); 2538 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2539 if (gc2.fg == 8) 2540 gc2.fg = defaults->fg; 2541 if (gc2.bg == 8) 2542 gc2.bg = defaults->bg; 2543 } 2544 2545 /* Ignore cell if it is the same as the last one. */ 2546 if (gc2.attr == tty->last_cell.attr && 2547 gc2.fg == tty->last_cell.fg && 2548 gc2.bg == tty->last_cell.bg && 2549 gc2.us == tty->last_cell.us && 2550 gc2.link == tty->last_cell.link) 2551 return; 2552 2553 /* 2554 * If no setab, try to use the reverse attribute as a best-effort for a 2555 * non-default background. This is a bit of a hack but it doesn't do 2556 * any serious harm and makes a couple of applications happier. 2557 */ 2558 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2559 if (gc2.attr & GRID_ATTR_REVERSE) { 2560 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2561 gc2.attr &= ~GRID_ATTR_REVERSE; 2562 } else { 2563 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2564 gc2.attr |= GRID_ATTR_REVERSE; 2565 } 2566 } 2567 2568 /* Fix up the colours if necessary. */ 2569 tty_check_fg(tty, palette, &gc2); 2570 tty_check_bg(tty, palette, &gc2); 2571 tty_check_us(tty, palette, &gc2); 2572 2573 /* 2574 * If any bits are being cleared or the underline colour is now default, 2575 * reset everything. 2576 */ 2577 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2578 tty_reset(tty); 2579 2580 /* 2581 * Set the colours. This may call tty_reset() (so it comes next) and 2582 * may add to (NOT remove) the desired attributes. 2583 */ 2584 tty_colours(tty, &gc2); 2585 2586 /* Filter out attribute bits already set. */ 2587 changed = gc2.attr & ~tc->attr; 2588 tc->attr = gc2.attr; 2589 2590 /* Set the attributes. */ 2591 if (changed & GRID_ATTR_BRIGHT) 2592 tty_putcode(tty, TTYC_BOLD); 2593 if (changed & GRID_ATTR_DIM) 2594 tty_putcode(tty, TTYC_DIM); 2595 if (changed & GRID_ATTR_ITALICS) 2596 tty_set_italics(tty); 2597 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2598 if ((changed & GRID_ATTR_UNDERSCORE) || 2599 !tty_term_has(tty->term, TTYC_SMULX)) 2600 tty_putcode(tty, TTYC_SMUL); 2601 else if (changed & GRID_ATTR_UNDERSCORE_2) 2602 tty_putcode_i(tty, TTYC_SMULX, 2); 2603 else if (changed & GRID_ATTR_UNDERSCORE_3) 2604 tty_putcode_i(tty, TTYC_SMULX, 3); 2605 else if (changed & GRID_ATTR_UNDERSCORE_4) 2606 tty_putcode_i(tty, TTYC_SMULX, 4); 2607 else if (changed & GRID_ATTR_UNDERSCORE_5) 2608 tty_putcode_i(tty, TTYC_SMULX, 5); 2609 } 2610 if (changed & GRID_ATTR_BLINK) 2611 tty_putcode(tty, TTYC_BLINK); 2612 if (changed & GRID_ATTR_REVERSE) { 2613 if (tty_term_has(tty->term, TTYC_REV)) 2614 tty_putcode(tty, TTYC_REV); 2615 else if (tty_term_has(tty->term, TTYC_SMSO)) 2616 tty_putcode(tty, TTYC_SMSO); 2617 } 2618 if (changed & GRID_ATTR_HIDDEN) 2619 tty_putcode(tty, TTYC_INVIS); 2620 if (changed & GRID_ATTR_STRIKETHROUGH) 2621 tty_putcode(tty, TTYC_SMXX); 2622 if (changed & GRID_ATTR_OVERLINE) 2623 tty_putcode(tty, TTYC_SMOL); 2624 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2625 tty_putcode(tty, TTYC_SMACS); 2626 2627 /* Set hyperlink if any. */ 2628 tty_hyperlink(tty, gc, hl); 2629 2630 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2631 } 2632 2633 static void 2634 tty_colours(struct tty *tty, const struct grid_cell *gc) 2635 { 2636 struct grid_cell *tc = &tty->cell; 2637 int have_ax; 2638 2639 /* No changes? Nothing is necessary. */ 2640 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2641 return; 2642 2643 /* 2644 * Is either the default colour? This is handled specially because the 2645 * best solution might be to reset both colours to default, in which 2646 * case if only one is default need to fall onward to set the other 2647 * colour. 2648 */ 2649 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2650 /* 2651 * If don't have AX but do have op, send sgr0 (op can't 2652 * actually be used because it is sometimes the same as sgr0 2653 * and sometimes isn't). This resets both colours to default. 2654 * 2655 * Otherwise, try to set the default colour only as needed. 2656 */ 2657 have_ax = tty_term_flag(tty->term, TTYC_AX); 2658 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2659 tty_reset(tty); 2660 else { 2661 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2662 if (have_ax) 2663 tty_puts(tty, "\033[39m"); 2664 else if (tc->fg != 7) 2665 tty_putcode_i(tty, TTYC_SETAF, 7); 2666 tc->fg = gc->fg; 2667 } 2668 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2669 if (have_ax) 2670 tty_puts(tty, "\033[49m"); 2671 else if (tc->bg != 0) 2672 tty_putcode_i(tty, TTYC_SETAB, 0); 2673 tc->bg = gc->bg; 2674 } 2675 } 2676 } 2677 2678 /* Set the foreground colour. */ 2679 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2680 tty_colours_fg(tty, gc); 2681 2682 /* 2683 * Set the background colour. This must come after the foreground as 2684 * tty_colour_fg() can call tty_reset(). 2685 */ 2686 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2687 tty_colours_bg(tty, gc); 2688 2689 /* Set the underscore colour. */ 2690 if (gc->us != tc->us) 2691 tty_colours_us(tty, gc); 2692 } 2693 2694 static void 2695 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2696 struct grid_cell *gc) 2697 { 2698 u_char r, g, b; 2699 u_int colours; 2700 int c; 2701 2702 /* 2703 * Perform substitution if this pane has a palette. If the bright 2704 * attribute is set and Nobr is not present, use the bright entry in 2705 * the palette by changing to the aixterm colour 2706 */ 2707 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2708 c = gc->fg; 2709 if (c < 8 && 2710 gc->attr & GRID_ATTR_BRIGHT && 2711 !tty_term_has(tty->term, TTYC_NOBR)) 2712 c += 90; 2713 if ((c = colour_palette_get(palette, c)) != -1) 2714 gc->fg = c; 2715 } 2716 2717 /* Is this a 24-bit colour? */ 2718 if (gc->fg & COLOUR_FLAG_RGB) { 2719 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2720 if (tty->term->flags & TERM_RGBCOLOURS) 2721 return; 2722 colour_split_rgb(gc->fg, &r, &g, &b); 2723 gc->fg = colour_find_rgb(r, g, b); 2724 } 2725 2726 /* How many colours does this terminal have? */ 2727 if (tty->term->flags & TERM_256COLOURS) 2728 colours = 256; 2729 else 2730 colours = tty_term_number(tty->term, TTYC_COLORS); 2731 2732 /* Is this a 256-colour colour? */ 2733 if (gc->fg & COLOUR_FLAG_256) { 2734 /* And not a 256 colour mode? */ 2735 if (colours < 256) { 2736 gc->fg = colour_256to16(gc->fg); 2737 if (gc->fg & 8) { 2738 gc->fg &= 7; 2739 if (colours >= 16) 2740 gc->fg += 90; 2741 } 2742 } 2743 return; 2744 } 2745 2746 /* Is this an aixterm colour? */ 2747 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2748 gc->fg -= 90; 2749 gc->attr |= GRID_ATTR_BRIGHT; 2750 } 2751 } 2752 2753 static void 2754 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2755 struct grid_cell *gc) 2756 { 2757 u_char r, g, b; 2758 u_int colours; 2759 int c; 2760 2761 /* Perform substitution if this pane has a palette. */ 2762 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2763 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2764 gc->bg = c; 2765 } 2766 2767 /* Is this a 24-bit colour? */ 2768 if (gc->bg & COLOUR_FLAG_RGB) { 2769 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2770 if (tty->term->flags & TERM_RGBCOLOURS) 2771 return; 2772 colour_split_rgb(gc->bg, &r, &g, &b); 2773 gc->bg = colour_find_rgb(r, g, b); 2774 } 2775 2776 /* How many colours does this terminal have? */ 2777 if (tty->term->flags & TERM_256COLOURS) 2778 colours = 256; 2779 else 2780 colours = tty_term_number(tty->term, TTYC_COLORS); 2781 2782 /* Is this a 256-colour colour? */ 2783 if (gc->bg & COLOUR_FLAG_256) { 2784 /* 2785 * And not a 256 colour mode? Translate to 16-colour 2786 * palette. Bold background doesn't exist portably, so just 2787 * discard the bold bit if set. 2788 */ 2789 if (colours < 256) { 2790 gc->bg = colour_256to16(gc->bg); 2791 if (gc->bg & 8) { 2792 gc->bg &= 7; 2793 if (colours >= 16) 2794 gc->bg += 90; 2795 } 2796 } 2797 return; 2798 } 2799 2800 /* Is this an aixterm colour? */ 2801 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2802 gc->bg -= 90; 2803 } 2804 2805 static void 2806 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2807 struct grid_cell *gc) 2808 { 2809 int c; 2810 2811 /* Perform substitution if this pane has a palette. */ 2812 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2813 if ((c = colour_palette_get(palette, gc->us)) != -1) 2814 gc->us = c; 2815 } 2816 2817 /* Underscore colour is set as RGB so convert. */ 2818 gc->us = colour_force_rgb (gc->us); 2819 if (gc->us == -1) 2820 gc->us = 8; 2821 } 2822 2823 static void 2824 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2825 { 2826 struct grid_cell *tc = &tty->cell; 2827 char s[32]; 2828 2829 /* Is this a 24-bit or 256-colour colour? */ 2830 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2831 if (tty_try_colour(tty, gc->fg, "38") == 0) 2832 goto save; 2833 /* Should not get here, already converted in tty_check_fg. */ 2834 return; 2835 } 2836 2837 /* Is this an aixterm bright colour? */ 2838 if (gc->fg >= 90 && gc->fg <= 97) { 2839 if (tty->term->flags & TERM_256COLOURS) { 2840 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2841 tty_puts(tty, s); 2842 } else 2843 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8); 2844 goto save; 2845 } 2846 2847 /* Otherwise set the foreground colour. */ 2848 tty_putcode_i(tty, TTYC_SETAF, gc->fg); 2849 2850 save: 2851 /* Save the new values in the terminal current cell. */ 2852 tc->fg = gc->fg; 2853 } 2854 2855 static void 2856 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2857 { 2858 struct grid_cell *tc = &tty->cell; 2859 char s[32]; 2860 2861 /* Is this a 24-bit or 256-colour colour? */ 2862 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2863 if (tty_try_colour(tty, gc->bg, "48") == 0) 2864 goto save; 2865 /* Should not get here, already converted in tty_check_bg. */ 2866 return; 2867 } 2868 2869 /* Is this an aixterm bright colour? */ 2870 if (gc->bg >= 90 && gc->bg <= 97) { 2871 if (tty->term->flags & TERM_256COLOURS) { 2872 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2873 tty_puts(tty, s); 2874 } else 2875 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8); 2876 goto save; 2877 } 2878 2879 /* Otherwise set the background colour. */ 2880 tty_putcode_i(tty, TTYC_SETAB, gc->bg); 2881 2882 save: 2883 /* Save the new values in the terminal current cell. */ 2884 tc->bg = gc->bg; 2885 } 2886 2887 static void 2888 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2889 { 2890 struct grid_cell *tc = &tty->cell; 2891 u_int c; 2892 u_char r, g, b; 2893 2894 /* Clear underline colour. */ 2895 if (gc->us == 0) { 2896 tty_putcode(tty, TTYC_OL); 2897 goto save; 2898 } 2899 2900 /* Must be an RGB colour - this should never happen. */ 2901 if (~gc->us & COLOUR_FLAG_RGB) 2902 return; 2903 2904 /* 2905 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2906 * capability format. Calculate the colour value. 2907 */ 2908 colour_split_rgb(gc->us, &r, &g, &b); 2909 c = (65536 * r) + (256 * g) + b; 2910 2911 /* 2912 * Write the colour. Only use setal if the RGB flag is set because the 2913 * non-RGB version may be wrong. 2914 */ 2915 if (tty_term_has(tty->term, TTYC_SETULC)) 2916 tty_putcode_i(tty, TTYC_SETULC, c); 2917 else if (tty_term_has(tty->term, TTYC_SETAL) && 2918 tty_term_has(tty->term, TTYC_RGB)) 2919 tty_putcode_i(tty, TTYC_SETAL, c); 2920 2921 save: 2922 /* Save the new values in the terminal current cell. */ 2923 tc->us = gc->us; 2924 } 2925 2926 static int 2927 tty_try_colour(struct tty *tty, int colour, const char *type) 2928 { 2929 u_char r, g, b; 2930 2931 if (colour & COLOUR_FLAG_256) { 2932 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2933 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff); 2934 else if (tty_term_has(tty->term, TTYC_SETAB)) 2935 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff); 2936 return (0); 2937 } 2938 2939 if (colour & COLOUR_FLAG_RGB) { 2940 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2941 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2942 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b); 2943 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2944 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b); 2945 return (0); 2946 } 2947 2948 return (-1); 2949 } 2950 2951 static void 2952 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2953 { 2954 memcpy(gc, &grid_default_cell, sizeof *gc); 2955 gc->fg = wp->palette.fg; 2956 gc->bg = wp->palette.bg; 2957 } 2958 2959 void 2960 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2961 { 2962 struct options *oo = wp->options; 2963 struct format_tree *ft; 2964 2965 memcpy(gc, &grid_default_cell, sizeof *gc); 2966 2967 if (wp->flags & PANE_STYLECHANGED) { 2968 log_debug("%%%u: style changed", wp->id); 2969 wp->flags &= ~PANE_STYLECHANGED; 2970 2971 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 2972 FORMAT_NOJOBS); 2973 format_defaults(ft, NULL, NULL, NULL, wp); 2974 tty_window_default_style(&wp->cached_active_gc, wp); 2975 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 2976 tty_window_default_style(&wp->cached_gc, wp); 2977 style_add(&wp->cached_gc, oo, "window-style", ft); 2978 format_free(ft); 2979 } 2980 2981 if (gc->fg == 8) { 2982 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2983 gc->fg = wp->cached_active_gc.fg; 2984 else 2985 gc->fg = wp->cached_gc.fg; 2986 } 2987 2988 if (gc->bg == 8) { 2989 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2990 gc->bg = wp->cached_active_gc.bg; 2991 else 2992 gc->bg = wp->cached_gc.bg; 2993 } 2994 } 2995 2996 static void 2997 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2998 struct colour_palette *palette, u_int bg, struct hyperlinks *hl) 2999 { 3000 struct grid_cell gc; 3001 3002 memcpy(&gc, &grid_default_cell, sizeof gc); 3003 gc.bg = bg; 3004 tty_attributes(tty, &gc, defaults, palette, hl); 3005 } 3006 3007 static void 3008 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data) 3009 { 3010 struct tty *tty = data; 3011 struct client *c = tty->client; 3012 3013 c->flags &= ~CLIENT_CLIPBOARDBUFFER; 3014 free(c->clipboard_panes); 3015 c->clipboard_panes = NULL; 3016 c->clipboard_npanes = 0; 3017 3018 tty->flags &= ~TTY_OSC52QUERY; 3019 } 3020 3021 void 3022 tty_clipboard_query(struct tty *tty) 3023 { 3024 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 3025 3026 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY)) 3027 return; 3028 tty_putcode_ss(tty, TTYC_MS, "", "?"); 3029 3030 tty->flags |= TTY_OSC52QUERY; 3031 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty); 3032 evtimer_add(&tty->clipboard_timer, &tv); 3033 } 3034