1 /* $OpenBSD$ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/ioctl.h> 21 22 #include <netinet/in.h> 23 24 #include <curses.h> 25 #include <errno.h> 26 #include <fcntl.h> 27 #include <resolv.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include <termios.h> 31 #include <time.h> 32 #include <unistd.h> 33 34 #include "tmux.h" 35 36 static int tty_log_fd = -1; 37 38 static void tty_set_italics(struct tty *); 39 static int tty_try_colour(struct tty *, int, const char *); 40 static void tty_force_cursor_colour(struct tty *, int); 41 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int, 42 u_int); 43 static void tty_cursor_pane_unless_wrap(struct tty *, 44 const struct tty_ctx *, u_int, u_int); 45 static void tty_invalidate(struct tty *); 46 static void tty_colours(struct tty *, const struct grid_cell *); 47 static void tty_check_fg(struct tty *, struct colour_palette *, 48 struct grid_cell *); 49 static void tty_check_bg(struct tty *, struct colour_palette *, 50 struct grid_cell *); 51 static void tty_check_us(struct tty *, struct colour_palette *, 52 struct grid_cell *); 53 static void tty_colours_fg(struct tty *, const struct grid_cell *); 54 static void tty_colours_bg(struct tty *, const struct grid_cell *); 55 static void tty_colours_us(struct tty *, const struct grid_cell *); 56 57 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int, 58 u_int); 59 static void tty_region(struct tty *, u_int, u_int); 60 static void tty_margin_pane(struct tty *, const struct tty_ctx *); 61 static void tty_margin(struct tty *, u_int, u_int); 62 static int tty_large_region(struct tty *, const struct tty_ctx *); 63 static int tty_fake_bce(const struct tty *, const struct grid_cell *, 64 u_int); 65 static void tty_redraw_region(struct tty *, const struct tty_ctx *); 66 static void tty_emulate_repeat(struct tty *, enum tty_code_code, 67 enum tty_code_code, u_int); 68 static void tty_repeat_space(struct tty *, u_int); 69 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int); 70 static void tty_default_attributes(struct tty *, const struct grid_cell *, 71 struct colour_palette *, u_int, struct hyperlinks *); 72 static int tty_check_overlay(struct tty *, u_int, u_int); 73 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int, 74 struct overlay_ranges *); 75 76 #ifdef ENABLE_SIXEL 77 static void tty_write_one(void (*)(struct tty *, const struct tty_ctx *), 78 struct client *, struct tty_ctx *); 79 #endif 80 81 #define tty_use_margin(tty) \ 82 (tty->term->flags & TERM_DECSLRM) 83 #define tty_full_width(tty, ctx) \ 84 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx) 85 86 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */) 87 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8) 88 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8) 89 90 #define TTY_QUERY_TIMEOUT 5 91 #define TTY_REQUEST_LIMIT 30 92 93 void 94 tty_create_log(void) 95 { 96 char name[64]; 97 98 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid()); 99 100 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644); 101 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1) 102 fatal("fcntl failed"); 103 } 104 105 int 106 tty_init(struct tty *tty, struct client *c) 107 { 108 if (!isatty(c->fd)) 109 return (-1); 110 111 memset(tty, 0, sizeof *tty); 112 tty->client = c; 113 114 tty->cstyle = SCREEN_CURSOR_DEFAULT; 115 tty->ccolour = -1; 116 tty->fg = tty->bg = -1; 117 118 if (tcgetattr(c->fd, &tty->tio) != 0) 119 return (-1); 120 return (0); 121 } 122 123 void 124 tty_resize(struct tty *tty) 125 { 126 struct client *c = tty->client; 127 struct winsize ws; 128 u_int sx, sy, xpixel, ypixel; 129 130 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) { 131 sx = ws.ws_col; 132 if (sx == 0) { 133 sx = 80; 134 xpixel = 0; 135 } else 136 xpixel = ws.ws_xpixel / sx; 137 sy = ws.ws_row; 138 if (sy == 0) { 139 sy = 24; 140 ypixel = 0; 141 } else 142 ypixel = ws.ws_ypixel / sy; 143 } else { 144 sx = 80; 145 sy = 24; 146 xpixel = 0; 147 ypixel = 0; 148 } 149 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy, 150 xpixel, ypixel); 151 tty_set_size(tty, sx, sy, xpixel, ypixel); 152 tty_invalidate(tty); 153 } 154 155 void 156 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel) 157 { 158 tty->sx = sx; 159 tty->sy = sy; 160 tty->xpixel = xpixel; 161 tty->ypixel = ypixel; 162 } 163 164 static void 165 tty_read_callback(__unused int fd, __unused short events, void *data) 166 { 167 struct tty *tty = data; 168 struct client *c = tty->client; 169 const char *name = c->name; 170 size_t size = EVBUFFER_LENGTH(tty->in); 171 int nread; 172 173 nread = evbuffer_read(tty->in, c->fd, -1); 174 if (nread == 0 || nread == -1) { 175 if (nread == 0) 176 log_debug("%s: read closed", name); 177 else 178 log_debug("%s: read error: %s", name, strerror(errno)); 179 event_del(&tty->event_in); 180 server_client_lost(tty->client); 181 return; 182 } 183 log_debug("%s: read %d bytes (already %zu)", name, nread, size); 184 185 while (tty_keys_next(tty)) 186 ; 187 } 188 189 static void 190 tty_timer_callback(__unused int fd, __unused short events, void *data) 191 { 192 struct tty *tty = data; 193 struct client *c = tty->client; 194 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 195 196 log_debug("%s: %zu discarded", c->name, tty->discarded); 197 198 c->flags |= CLIENT_ALLREDRAWFLAGS; 199 c->discarded += tty->discarded; 200 201 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 202 tty->flags &= ~TTY_BLOCK; 203 tty_invalidate(tty); 204 return; 205 } 206 tty->discarded = 0; 207 evtimer_add(&tty->timer, &tv); 208 } 209 210 static int 211 tty_block_maybe(struct tty *tty) 212 { 213 struct client *c = tty->client; 214 size_t size = EVBUFFER_LENGTH(tty->out); 215 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 216 217 if (size == 0) 218 tty->flags &= ~TTY_NOBLOCK; 219 else if (tty->flags & TTY_NOBLOCK) 220 return (0); 221 222 if (size < TTY_BLOCK_START(tty)) 223 return (0); 224 225 if (tty->flags & TTY_BLOCK) 226 return (1); 227 tty->flags |= TTY_BLOCK; 228 229 log_debug("%s: can't keep up, %zu discarded", c->name, size); 230 231 evbuffer_drain(tty->out, size); 232 c->discarded += size; 233 234 tty->discarded = 0; 235 evtimer_add(&tty->timer, &tv); 236 return (1); 237 } 238 239 static void 240 tty_write_callback(__unused int fd, __unused short events, void *data) 241 { 242 struct tty *tty = data; 243 struct client *c = tty->client; 244 size_t size = EVBUFFER_LENGTH(tty->out); 245 int nwrite; 246 247 nwrite = evbuffer_write(tty->out, c->fd); 248 if (nwrite == -1) 249 return; 250 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 251 252 if (c->redraw > 0) { 253 if ((size_t)nwrite >= c->redraw) 254 c->redraw = 0; 255 else 256 c->redraw -= nwrite; 257 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 258 c->redraw); 259 } else if (tty_block_maybe(tty)) 260 return; 261 262 if (EVBUFFER_LENGTH(tty->out) != 0) 263 event_add(&tty->event_out, NULL); 264 } 265 266 int 267 tty_open(struct tty *tty, char **cause) 268 { 269 struct client *c = tty->client; 270 271 tty->term = tty_term_create(tty, c->term_name, c->term_caps, 272 c->term_ncaps, &c->term_features, cause); 273 if (tty->term == NULL) { 274 tty_close(tty); 275 return (-1); 276 } 277 tty->flags |= TTY_OPENED; 278 279 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 280 281 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ, 282 tty_read_callback, tty); 283 tty->in = evbuffer_new(); 284 if (tty->in == NULL) 285 fatal("out of memory"); 286 287 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty); 288 tty->out = evbuffer_new(); 289 if (tty->out == NULL) 290 fatal("out of memory"); 291 292 evtimer_set(&tty->timer, tty_timer_callback, tty); 293 294 tty_start_tty(tty); 295 tty_keys_build(tty); 296 297 return (0); 298 } 299 300 static void 301 tty_start_timer_callback(__unused int fd, __unused short events, void *data) 302 { 303 struct tty *tty = data; 304 struct client *c = tty->client; 305 306 log_debug("%s: start timer fired", c->name); 307 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0) 308 tty_update_features(tty); 309 tty->flags |= TTY_ALL_REQUEST_FLAGS; 310 } 311 312 void 313 tty_start_tty(struct tty *tty) 314 { 315 struct client *c = tty->client; 316 struct termios tio; 317 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 318 319 setblocking(c->fd, 0); 320 event_add(&tty->event_in, NULL); 321 322 memcpy(&tio, &tty->tio, sizeof tio); 323 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 324 tio.c_iflag |= IGNBRK; 325 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 326 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT| 327 ECHOKE|ISIG); 328 tio.c_cc[VMIN] = 1; 329 tio.c_cc[VTIME] = 0; 330 if (tcsetattr(c->fd, TCSANOW, &tio) == 0) 331 tcflush(c->fd, TCOFLUSH); 332 333 tty_putcode(tty, TTYC_SMCUP); 334 335 tty_putcode(tty, TTYC_SMKX); 336 tty_putcode(tty, TTYC_CLEAR); 337 338 if (tty_acs_needed(tty)) { 339 log_debug("%s: using capabilities for ACS", c->name); 340 tty_putcode(tty, TTYC_ENACS); 341 } else 342 log_debug("%s: using UTF-8 for ACS", c->name); 343 344 tty_putcode(tty, TTYC_CNORM); 345 if (tty_term_has(tty->term, TTYC_KMOUS)) { 346 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l"); 347 tty_puts(tty, "\033[?1006l\033[?1005l"); 348 } 349 if (tty_term_has(tty->term, TTYC_ENBP)) 350 tty_putcode(tty, TTYC_ENBP); 351 352 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 353 evtimer_add(&tty->start_timer, &tv); 354 355 tty->flags |= TTY_STARTED; 356 tty_invalidate(tty); 357 358 if (tty->ccolour != -1) 359 tty_force_cursor_colour(tty, -1); 360 361 tty->mouse_drag_flag = 0; 362 tty->mouse_drag_update = NULL; 363 tty->mouse_drag_release = NULL; 364 } 365 366 void 367 tty_send_requests(struct tty *tty) 368 { 369 if (~tty->flags & TTY_STARTED) 370 return; 371 372 if (tty->term->flags & TERM_VT100LIKE) { 373 if (~tty->term->flags & TTY_HAVEDA) 374 tty_puts(tty, "\033[c"); 375 if (~tty->flags & TTY_HAVEDA2) 376 tty_puts(tty, "\033[>c"); 377 if (~tty->flags & TTY_HAVEXDA) 378 tty_puts(tty, "\033[>q"); 379 tty_puts(tty, "\033]10;?\033\\"); 380 tty_puts(tty, "\033]11;?\033\\"); 381 } else 382 tty->flags |= TTY_ALL_REQUEST_FLAGS; 383 tty->last_requests = time(NULL); 384 } 385 386 void 387 tty_repeat_requests(struct tty *tty) 388 { 389 time_t t = time(NULL); 390 391 if (~tty->flags & TTY_STARTED) 392 return; 393 394 if (t - tty->last_requests <= TTY_REQUEST_LIMIT) 395 return; 396 tty->last_requests = t; 397 398 if (tty->term->flags & TERM_VT100LIKE) { 399 tty_puts(tty, "\033]10;?\033\\"); 400 tty_puts(tty, "\033]11;?\033\\"); 401 } 402 } 403 404 void 405 tty_stop_tty(struct tty *tty) 406 { 407 struct client *c = tty->client; 408 struct winsize ws; 409 410 if (!(tty->flags & TTY_STARTED)) 411 return; 412 tty->flags &= ~TTY_STARTED; 413 414 evtimer_del(&tty->start_timer); 415 416 event_del(&tty->timer); 417 tty->flags &= ~TTY_BLOCK; 418 419 event_del(&tty->event_in); 420 event_del(&tty->event_out); 421 422 /* 423 * Be flexible about error handling and try not kill the server just 424 * because the fd is invalid. Things like ssh -t can easily leave us 425 * with a dead tty. 426 */ 427 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 428 return; 429 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 430 return; 431 432 tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 433 if (tty_acs_needed(tty)) 434 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 435 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 436 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 437 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 438 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 439 if (tty_term_has(tty->term, TTYC_SE)) 440 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 441 else if (tty_term_has(tty->term, TTYC_SS)) 442 tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0)); 443 } 444 if (tty->ccolour != -1) 445 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 446 447 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 448 if (tty_term_has(tty->term, TTYC_KMOUS)) { 449 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 450 tty_raw(tty, "\033[?1006l\033[?1005l"); 451 } 452 if (tty_term_has(tty->term, TTYC_DSBP)) 453 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 454 455 if (tty->term->flags & TERM_VT100LIKE) 456 tty_raw(tty, "\033[?7727l"); 457 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 458 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 459 460 if (tty_use_margin(tty)) 461 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 462 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 463 464 setblocking(c->fd, 1); 465 } 466 467 void 468 tty_close(struct tty *tty) 469 { 470 if (event_initialized(&tty->key_timer)) 471 evtimer_del(&tty->key_timer); 472 tty_stop_tty(tty); 473 474 if (tty->flags & TTY_OPENED) { 475 evbuffer_free(tty->in); 476 event_del(&tty->event_in); 477 evbuffer_free(tty->out); 478 event_del(&tty->event_out); 479 480 tty_term_free(tty->term); 481 tty_keys_free(tty); 482 483 tty->flags &= ~TTY_OPENED; 484 } 485 } 486 487 void 488 tty_free(struct tty *tty) 489 { 490 tty_close(tty); 491 } 492 493 void 494 tty_update_features(struct tty *tty) 495 { 496 struct client *c = tty->client; 497 498 if (tty_apply_features(tty->term, c->term_features)) 499 tty_term_apply_overrides(tty->term); 500 501 if (tty_use_margin(tty)) 502 tty_putcode(tty, TTYC_ENMG); 503 if (options_get_number(global_options, "extended-keys")) 504 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 505 if (options_get_number(global_options, "focus-events")) 506 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 507 if (tty->term->flags & TERM_VT100LIKE) 508 tty_puts(tty, "\033[?7727h"); 509 510 /* 511 * Features might have changed since the first draw during attach. For 512 * example, this happens when DA responses are received. 513 */ 514 server_redraw_client(c); 515 516 tty_invalidate(tty); 517 } 518 519 void 520 tty_raw(struct tty *tty, const char *s) 521 { 522 struct client *c = tty->client; 523 ssize_t n, slen; 524 u_int i; 525 526 slen = strlen(s); 527 for (i = 0; i < 5; i++) { 528 n = write(c->fd, s, slen); 529 if (n >= 0) { 530 s += n; 531 slen -= n; 532 if (slen == 0) 533 break; 534 } else if (n == -1 && errno != EAGAIN) 535 break; 536 usleep(100); 537 } 538 } 539 540 void 541 tty_putcode(struct tty *tty, enum tty_code_code code) 542 { 543 tty_puts(tty, tty_term_string(tty->term, code)); 544 } 545 546 void 547 tty_putcode_i(struct tty *tty, enum tty_code_code code, int a) 548 { 549 if (a < 0) 550 return; 551 tty_puts(tty, tty_term_string_i(tty->term, code, a)); 552 } 553 554 void 555 tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b) 556 { 557 if (a < 0 || b < 0) 558 return; 559 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b)); 560 } 561 562 void 563 tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c) 564 { 565 if (a < 0 || b < 0 || c < 0) 566 return; 567 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c)); 568 } 569 570 void 571 tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a) 572 { 573 if (a != NULL) 574 tty_puts(tty, tty_term_string_s(tty->term, code, a)); 575 } 576 577 void 578 tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a, 579 const char *b) 580 { 581 if (a != NULL && b != NULL) 582 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b)); 583 } 584 585 static void 586 tty_add(struct tty *tty, const char *buf, size_t len) 587 { 588 struct client *c = tty->client; 589 590 if (tty->flags & TTY_BLOCK) { 591 tty->discarded += len; 592 return; 593 } 594 595 evbuffer_add(tty->out, buf, len); 596 log_debug("%s: %.*s", c->name, (int)len, buf); 597 c->written += len; 598 599 if (tty_log_fd != -1) 600 write(tty_log_fd, buf, len); 601 if (tty->flags & TTY_STARTED) 602 event_add(&tty->event_out, NULL); 603 } 604 605 void 606 tty_puts(struct tty *tty, const char *s) 607 { 608 if (*s != '\0') 609 tty_add(tty, s, strlen(s)); 610 } 611 612 void 613 tty_putc(struct tty *tty, u_char ch) 614 { 615 const char *acs; 616 617 if ((tty->term->flags & TERM_NOAM) && 618 ch >= 0x20 && ch != 0x7f && 619 tty->cy == tty->sy - 1 && 620 tty->cx + 1 >= tty->sx) 621 return; 622 623 if (tty->cell.attr & GRID_ATTR_CHARSET) { 624 acs = tty_acs_get(tty, ch); 625 if (acs != NULL) 626 tty_add(tty, acs, strlen(acs)); 627 else 628 tty_add(tty, (char *)&ch, 1); 629 } else 630 tty_add(tty, (char *)&ch, 1); 631 632 if (ch >= 0x20 && ch != 0x7f) { 633 if (tty->cx >= tty->sx) { 634 tty->cx = 1; 635 if (tty->cy != tty->rlower) 636 tty->cy++; 637 638 /* 639 * On !am terminals, force the cursor position to where 640 * we think it should be after a line wrap - this means 641 * it works on sensible terminals as well. 642 */ 643 if (tty->term->flags & TERM_NOAM) 644 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx); 645 } else 646 tty->cx++; 647 } 648 } 649 650 void 651 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 652 { 653 if ((tty->term->flags & TERM_NOAM) && 654 tty->cy == tty->sy - 1 && 655 tty->cx + len >= tty->sx) 656 len = tty->sx - tty->cx - 1; 657 658 tty_add(tty, buf, len); 659 if (tty->cx + width > tty->sx) { 660 tty->cx = (tty->cx + width) - tty->sx; 661 if (tty->cx <= tty->sx) 662 tty->cy++; 663 else 664 tty->cx = tty->cy = UINT_MAX; 665 } else 666 tty->cx += width; 667 } 668 669 static void 670 tty_set_italics(struct tty *tty) 671 { 672 const char *s; 673 674 if (tty_term_has(tty->term, TTYC_SITM)) { 675 s = options_get_string(global_options, "default-terminal"); 676 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 677 tty_putcode(tty, TTYC_SITM); 678 return; 679 } 680 } 681 tty_putcode(tty, TTYC_SMSO); 682 } 683 684 void 685 tty_set_title(struct tty *tty, const char *title) 686 { 687 if (!tty_term_has(tty->term, TTYC_TSL) || 688 !tty_term_has(tty->term, TTYC_FSL)) 689 return; 690 691 tty_putcode(tty, TTYC_TSL); 692 tty_puts(tty, title); 693 tty_putcode(tty, TTYC_FSL); 694 } 695 696 void 697 tty_set_path(struct tty *tty, const char *title) 698 { 699 if (!tty_term_has(tty->term, TTYC_SWD) || 700 !tty_term_has(tty->term, TTYC_FSL)) 701 return; 702 703 tty_putcode(tty, TTYC_SWD); 704 tty_puts(tty, title); 705 tty_putcode(tty, TTYC_FSL); 706 } 707 708 static void 709 tty_force_cursor_colour(struct tty *tty, int c) 710 { 711 u_char r, g, b; 712 char s[13]; 713 714 if (c != -1) 715 c = colour_force_rgb(c); 716 if (c == tty->ccolour) 717 return; 718 if (c == -1) 719 tty_putcode(tty, TTYC_CR); 720 else { 721 colour_split_rgb(c, &r, &g, &b); 722 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b); 723 tty_putcode_s(tty, TTYC_CS, s); 724 } 725 tty->ccolour = c; 726 } 727 728 static int 729 tty_update_cursor(struct tty *tty, int mode, struct screen *s) 730 { 731 enum screen_cursor_style cstyle; 732 int ccolour, changed, cmode = mode; 733 734 /* Set cursor colour if changed. */ 735 if (s != NULL) { 736 ccolour = s->ccolour; 737 if (s->ccolour == -1) 738 ccolour = s->default_ccolour; 739 tty_force_cursor_colour(tty, ccolour); 740 } 741 742 /* If cursor is off, set as invisible. */ 743 if (~cmode & MODE_CURSOR) { 744 if (tty->mode & MODE_CURSOR) 745 tty_putcode(tty, TTYC_CIVIS); 746 return (cmode); 747 } 748 749 /* Check if blinking or very visible flag changed or style changed. */ 750 if (s == NULL) 751 cstyle = tty->cstyle; 752 else { 753 cstyle = s->cstyle; 754 if (cstyle == SCREEN_CURSOR_DEFAULT) { 755 if (~cmode & MODE_CURSOR_BLINKING_SET) { 756 if (s->default_mode & MODE_CURSOR_BLINKING) 757 cmode |= MODE_CURSOR_BLINKING; 758 else 759 cmode &= ~MODE_CURSOR_BLINKING; 760 } 761 cstyle = s->default_cstyle; 762 } 763 } 764 765 /* If nothing changed, do nothing. */ 766 changed = cmode ^ tty->mode; 767 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 768 return (cmode); 769 770 /* 771 * Set cursor style. If an explicit style has been set with DECSCUSR, 772 * set it if supported, otherwise send cvvis for blinking styles. 773 * 774 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 775 * if either the blinking or very visible flags are set. 776 */ 777 tty_putcode(tty, TTYC_CNORM); 778 switch (cstyle) { 779 case SCREEN_CURSOR_DEFAULT: 780 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 781 if (tty_term_has(tty->term, TTYC_SE)) 782 tty_putcode(tty, TTYC_SE); 783 else 784 tty_putcode_i(tty, TTYC_SS, 0); 785 } 786 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 787 tty_putcode(tty, TTYC_CVVIS); 788 break; 789 case SCREEN_CURSOR_BLOCK: 790 if (tty_term_has(tty->term, TTYC_SS)) { 791 if (cmode & MODE_CURSOR_BLINKING) 792 tty_putcode_i(tty, TTYC_SS, 1); 793 else 794 tty_putcode_i(tty, TTYC_SS, 2); 795 } else if (cmode & MODE_CURSOR_BLINKING) 796 tty_putcode(tty, TTYC_CVVIS); 797 break; 798 case SCREEN_CURSOR_UNDERLINE: 799 if (tty_term_has(tty->term, TTYC_SS)) { 800 if (cmode & MODE_CURSOR_BLINKING) 801 tty_putcode_i(tty, TTYC_SS, 3); 802 else 803 tty_putcode_i(tty, TTYC_SS, 4); 804 } else if (cmode & MODE_CURSOR_BLINKING) 805 tty_putcode(tty, TTYC_CVVIS); 806 break; 807 case SCREEN_CURSOR_BAR: 808 if (tty_term_has(tty->term, TTYC_SS)) { 809 if (cmode & MODE_CURSOR_BLINKING) 810 tty_putcode_i(tty, TTYC_SS, 5); 811 else 812 tty_putcode_i(tty, TTYC_SS, 6); 813 } else if (cmode & MODE_CURSOR_BLINKING) 814 tty_putcode(tty, TTYC_CVVIS); 815 break; 816 } 817 tty->cstyle = cstyle; 818 return (cmode); 819 } 820 821 void 822 tty_update_mode(struct tty *tty, int mode, struct screen *s) 823 { 824 struct tty_term *term = tty->term; 825 struct client *c = tty->client; 826 int changed; 827 828 if (tty->flags & TTY_NOCURSOR) 829 mode &= ~MODE_CURSOR; 830 831 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING) 832 mode |= MODE_CURSOR_BLINKING; 833 else 834 mode &= ~MODE_CURSOR_BLINKING; 835 836 changed = mode ^ tty->mode; 837 if (log_get_level() != 0 && changed != 0) { 838 log_debug("%s: current mode %s", c->name, 839 screen_mode_to_string(tty->mode)); 840 log_debug("%s: setting mode %s", c->name, 841 screen_mode_to_string(mode)); 842 } 843 844 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) { 845 /* 846 * If the mouse modes have changed, clear then all and apply 847 * again. There are differences in how terminals track the 848 * various bits. 849 */ 850 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l"); 851 if (mode & ALL_MOUSE_MODES) 852 tty_puts(tty, "\033[?1006h"); 853 if (mode & MODE_MOUSE_ALL) 854 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h"); 855 else if (mode & MODE_MOUSE_BUTTON) 856 tty_puts(tty, "\033[?1000h\033[?1002h"); 857 else if (mode & MODE_MOUSE_STANDARD) 858 tty_puts(tty, "\033[?1000h"); 859 } 860 tty->mode = mode; 861 } 862 863 static void 864 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 865 enum tty_code_code code1, u_int n) 866 { 867 if (tty_term_has(tty->term, code)) 868 tty_putcode_i(tty, code, n); 869 else { 870 while (n-- > 0) 871 tty_putcode(tty, code1); 872 } 873 } 874 875 static void 876 tty_repeat_space(struct tty *tty, u_int n) 877 { 878 static char s[500]; 879 880 if (*s != ' ') 881 memset(s, ' ', sizeof s); 882 883 while (n > sizeof s) { 884 tty_putn(tty, s, sizeof s, sizeof s); 885 n -= sizeof s; 886 } 887 if (n != 0) 888 tty_putn(tty, s, n, n); 889 } 890 891 /* Is this window bigger than the terminal? */ 892 int 893 tty_window_bigger(struct tty *tty) 894 { 895 struct client *c = tty->client; 896 struct window *w = c->session->curw->window; 897 898 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 899 } 900 901 /* What offset should this window be drawn at? */ 902 int 903 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 904 { 905 *ox = tty->oox; 906 *oy = tty->ooy; 907 *sx = tty->osx; 908 *sy = tty->osy; 909 910 return (tty->oflag); 911 } 912 913 /* What offset should this window be drawn at? */ 914 static int 915 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 916 { 917 struct client *c = tty->client; 918 struct window *w = c->session->curw->window; 919 struct window_pane *wp = server_client_get_pane(c); 920 u_int cx, cy, lines; 921 922 lines = status_line_size(c); 923 924 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 925 *ox = 0; 926 *oy = 0; 927 *sx = w->sx; 928 *sy = w->sy; 929 930 c->pan_window = NULL; 931 return (0); 932 } 933 934 *sx = tty->sx; 935 *sy = tty->sy - lines; 936 937 if (c->pan_window == w) { 938 if (*sx >= w->sx) 939 c->pan_ox = 0; 940 else if (c->pan_ox + *sx > w->sx) 941 c->pan_ox = w->sx - *sx; 942 *ox = c->pan_ox; 943 if (*sy >= w->sy) 944 c->pan_oy = 0; 945 else if (c->pan_oy + *sy > w->sy) 946 c->pan_oy = w->sy - *sy; 947 *oy = c->pan_oy; 948 return (1); 949 } 950 951 if (~wp->screen->mode & MODE_CURSOR) { 952 *ox = 0; 953 *oy = 0; 954 } else { 955 cx = wp->xoff + wp->screen->cx; 956 cy = wp->yoff + wp->screen->cy; 957 958 if (cx < *sx) 959 *ox = 0; 960 else if (cx > w->sx - *sx) 961 *ox = w->sx - *sx; 962 else 963 *ox = cx - *sx / 2; 964 965 if (cy < *sy) 966 *oy = 0; 967 else if (cy > w->sy - *sy) 968 *oy = w->sy - *sy; 969 else 970 *oy = cy - *sy / 2; 971 } 972 973 c->pan_window = NULL; 974 return (1); 975 } 976 977 /* Update stored offsets for a window and redraw if necessary. */ 978 void 979 tty_update_window_offset(struct window *w) 980 { 981 struct client *c; 982 983 TAILQ_FOREACH(c, &clients, entry) { 984 if (c->session != NULL && 985 c->session->curw != NULL && 986 c->session->curw->window == w) 987 tty_update_client_offset(c); 988 } 989 } 990 991 /* Update stored offsets for a client and redraw if necessary. */ 992 void 993 tty_update_client_offset(struct client *c) 994 { 995 u_int ox, oy, sx, sy; 996 997 if (~c->flags & CLIENT_TERMINAL) 998 return; 999 1000 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 1001 if (ox == c->tty.oox && 1002 oy == c->tty.ooy && 1003 sx == c->tty.osx && 1004 sy == c->tty.osy) 1005 return; 1006 1007 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 1008 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 1009 ox, oy, sx, sy); 1010 1011 c->tty.oox = ox; 1012 c->tty.ooy = oy; 1013 c->tty.osx = sx; 1014 c->tty.osy = sy; 1015 1016 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 1017 } 1018 1019 /* 1020 * Is the region large enough to be worth redrawing once later rather than 1021 * probably several times now? Currently yes if it is more than 50% of the 1022 * pane. 1023 */ 1024 static int 1025 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 1026 { 1027 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 1028 } 1029 1030 /* 1031 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 1032 * emulated. 1033 */ 1034 static int 1035 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 1036 { 1037 if (tty_term_flag(tty->term, TTYC_BCE)) 1038 return (0); 1039 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 1040 return (1); 1041 return (0); 1042 } 1043 1044 /* 1045 * Redraw scroll region using data from screen (already updated). Used when 1046 * CSR not supported, or window is a pane that doesn't take up the full 1047 * width of the terminal. 1048 */ 1049 static void 1050 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 1051 { 1052 struct client *c = tty->client; 1053 u_int i; 1054 1055 /* 1056 * If region is large, schedule a redraw. In most cases this is likely 1057 * to be followed by some more scrolling. 1058 */ 1059 if (tty_large_region(tty, ctx)) { 1060 log_debug("%s: %s large redraw", __func__, c->name); 1061 ctx->redraw_cb(ctx); 1062 return; 1063 } 1064 1065 for (i = ctx->orupper; i <= ctx->orlower; i++) 1066 tty_draw_pane(tty, ctx, i); 1067 } 1068 1069 /* Is this position visible in the pane? */ 1070 static int 1071 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1072 u_int py, u_int nx, u_int ny) 1073 { 1074 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1075 1076 if (!ctx->bigger) 1077 return (1); 1078 1079 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1080 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1081 return (0); 1082 return (1); 1083 } 1084 1085 /* Clamp line position to visible part of pane. */ 1086 static int 1087 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1088 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1089 { 1090 u_int xoff = ctx->rxoff + px; 1091 1092 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1093 return (0); 1094 *ry = ctx->yoff + py - ctx->woy; 1095 1096 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1097 /* All visible. */ 1098 *i = 0; 1099 *x = ctx->xoff + px - ctx->wox; 1100 *rx = nx; 1101 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1102 /* Both left and right not visible. */ 1103 *i = ctx->wox; 1104 *x = 0; 1105 *rx = ctx->wsx; 1106 } else if (xoff < ctx->wox) { 1107 /* Left not visible. */ 1108 *i = ctx->wox - (ctx->xoff + px); 1109 *x = 0; 1110 *rx = nx - *i; 1111 } else { 1112 /* Right not visible. */ 1113 *i = 0; 1114 *x = (ctx->xoff + px) - ctx->wox; 1115 *rx = ctx->wsx - *x; 1116 } 1117 if (*rx > nx) 1118 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1119 1120 return (1); 1121 } 1122 1123 /* Clear a line. */ 1124 static void 1125 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1126 u_int px, u_int nx, u_int bg) 1127 { 1128 struct client *c = tty->client; 1129 struct overlay_ranges r; 1130 u_int i; 1131 1132 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1133 1134 /* Nothing to clear. */ 1135 if (nx == 0) 1136 return; 1137 1138 /* If genuine BCE is available, can try escape sequences. */ 1139 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1140 /* Off the end of the line, use EL if available. */ 1141 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1142 tty_cursor(tty, px, py); 1143 tty_putcode(tty, TTYC_EL); 1144 return; 1145 } 1146 1147 /* At the start of the line. Use EL1. */ 1148 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1149 tty_cursor(tty, px + nx - 1, py); 1150 tty_putcode(tty, TTYC_EL1); 1151 return; 1152 } 1153 1154 /* Section of line. Use ECH if possible. */ 1155 if (tty_term_has(tty->term, TTYC_ECH)) { 1156 tty_cursor(tty, px, py); 1157 tty_putcode_i(tty, TTYC_ECH, nx); 1158 return; 1159 } 1160 } 1161 1162 /* 1163 * Couldn't use an escape sequence, use spaces. Clear only the visible 1164 * bit if there is an overlay. 1165 */ 1166 tty_check_overlay_range(tty, px, py, nx, &r); 1167 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 1168 if (r.nx[i] == 0) 1169 continue; 1170 tty_cursor(tty, r.px[i], py); 1171 tty_repeat_space(tty, r.nx[i]); 1172 } 1173 } 1174 1175 /* Clear a line, adjusting to visible part of pane. */ 1176 static void 1177 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1178 u_int px, u_int nx, u_int bg) 1179 { 1180 struct client *c = tty->client; 1181 u_int i, x, rx, ry; 1182 1183 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1184 1185 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1186 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1187 } 1188 1189 /* Clamp area position to visible part of pane. */ 1190 static int 1191 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1192 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1193 u_int *ry) 1194 { 1195 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1196 1197 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1198 return (0); 1199 1200 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1201 /* All visible. */ 1202 *i = 0; 1203 *x = ctx->xoff + px - ctx->wox; 1204 *rx = nx; 1205 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1206 /* Both left and right not visible. */ 1207 *i = ctx->wox; 1208 *x = 0; 1209 *rx = ctx->wsx; 1210 } else if (xoff < ctx->wox) { 1211 /* Left not visible. */ 1212 *i = ctx->wox - (ctx->xoff + px); 1213 *x = 0; 1214 *rx = nx - *i; 1215 } else { 1216 /* Right not visible. */ 1217 *i = 0; 1218 *x = (ctx->xoff + px) - ctx->wox; 1219 *rx = ctx->wsx - *x; 1220 } 1221 if (*rx > nx) 1222 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1223 1224 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1225 /* All visible. */ 1226 *j = 0; 1227 *y = ctx->yoff + py - ctx->woy; 1228 *ry = ny; 1229 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1230 /* Both top and bottom not visible. */ 1231 *j = ctx->woy; 1232 *y = 0; 1233 *ry = ctx->wsy; 1234 } else if (yoff < ctx->woy) { 1235 /* Top not visible. */ 1236 *j = ctx->woy - (ctx->yoff + py); 1237 *y = 0; 1238 *ry = ny - *j; 1239 } else { 1240 /* Bottom not visible. */ 1241 *j = 0; 1242 *y = (ctx->yoff + py) - ctx->woy; 1243 *ry = ctx->wsy - *y; 1244 } 1245 if (*ry > ny) 1246 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1247 1248 return (1); 1249 } 1250 1251 /* Clear an area, adjusting to visible part of pane. */ 1252 static void 1253 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1254 u_int ny, u_int px, u_int nx, u_int bg) 1255 { 1256 struct client *c = tty->client; 1257 u_int yy; 1258 char tmp[64]; 1259 1260 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1261 1262 /* Nothing to clear. */ 1263 if (nx == 0 || ny == 0) 1264 return; 1265 1266 /* If genuine BCE is available, can try escape sequences. */ 1267 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1268 /* Use ED if clearing off the bottom of the terminal. */ 1269 if (px == 0 && 1270 px + nx >= tty->sx && 1271 py + ny >= tty->sy && 1272 tty_term_has(tty->term, TTYC_ED)) { 1273 tty_cursor(tty, 0, py); 1274 tty_putcode(tty, TTYC_ED); 1275 return; 1276 } 1277 1278 /* 1279 * On VT420 compatible terminals we can use DECFRA if the 1280 * background colour isn't default (because it doesn't work 1281 * after SGR 0). 1282 */ 1283 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1284 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1285 py + 1, px + 1, py + ny, px + nx); 1286 tty_puts(tty, tmp); 1287 return; 1288 } 1289 1290 /* Full lines can be scrolled away to clear them. */ 1291 if (px == 0 && 1292 px + nx >= tty->sx && 1293 ny > 2 && 1294 tty_term_has(tty->term, TTYC_CSR) && 1295 tty_term_has(tty->term, TTYC_INDN)) { 1296 tty_region(tty, py, py + ny - 1); 1297 tty_margin_off(tty); 1298 tty_putcode_i(tty, TTYC_INDN, ny); 1299 return; 1300 } 1301 1302 /* 1303 * If margins are supported, can just scroll the area off to 1304 * clear it. 1305 */ 1306 if (nx > 2 && 1307 ny > 2 && 1308 tty_term_has(tty->term, TTYC_CSR) && 1309 tty_use_margin(tty) && 1310 tty_term_has(tty->term, TTYC_INDN)) { 1311 tty_region(tty, py, py + ny - 1); 1312 tty_margin(tty, px, px + nx - 1); 1313 tty_putcode_i(tty, TTYC_INDN, ny); 1314 return; 1315 } 1316 } 1317 1318 /* Couldn't use an escape sequence, loop over the lines. */ 1319 for (yy = py; yy < py + ny; yy++) 1320 tty_clear_line(tty, defaults, yy, px, nx, bg); 1321 } 1322 1323 /* Clear an area in a pane. */ 1324 static void 1325 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1326 u_int ny, u_int px, u_int nx, u_int bg) 1327 { 1328 u_int i, j, x, y, rx, ry; 1329 1330 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1331 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1332 } 1333 1334 static void 1335 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1336 { 1337 struct screen *s = ctx->s; 1338 u_int nx = ctx->sx, i, x, rx, ry; 1339 1340 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1341 1342 if (!ctx->bigger) { 1343 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1344 &ctx->defaults, ctx->palette); 1345 return; 1346 } 1347 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1348 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1349 ctx->palette); 1350 } 1351 } 1352 1353 static const struct grid_cell * 1354 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1355 { 1356 static struct grid_cell new; 1357 int c; 1358 1359 /* Characters less than 0x7f are always fine, no matter what. */ 1360 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1361 return (gc); 1362 1363 /* UTF-8 terminal and a UTF-8 character - fine. */ 1364 if (tty->client->flags & CLIENT_UTF8) 1365 return (gc); 1366 memcpy(&new, gc, sizeof new); 1367 1368 /* See if this can be mapped to an ACS character. */ 1369 c = tty_acs_reverse_get(tty, (const char *)gc->data.data, gc->data.size); 1370 if (c != -1) { 1371 utf8_set(&new.data, c); 1372 new.attr |= GRID_ATTR_CHARSET; 1373 return (&new); 1374 } 1375 1376 /* Replace by the right number of underscores. */ 1377 new.data.size = gc->data.width; 1378 if (new.data.size > UTF8_SIZE) 1379 new.data.size = UTF8_SIZE; 1380 memset(new.data.data, '_', new.data.size); 1381 return (&new); 1382 } 1383 1384 /* 1385 * Check if a single character is obstructed by the overlay and return a 1386 * boolean. 1387 */ 1388 static int 1389 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1390 { 1391 struct overlay_ranges r; 1392 1393 /* 1394 * A unit width range will always return nx[2] == 0 from a check, even 1395 * with multiple overlays, so it's sufficient to check just the first 1396 * two entries. 1397 */ 1398 tty_check_overlay_range(tty, px, py, 1, &r); 1399 if (r.nx[0] + r.nx[1] == 0) 1400 return (0); 1401 return (1); 1402 } 1403 1404 /* Return parts of the input range which are visible. */ 1405 static void 1406 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx, 1407 struct overlay_ranges *r) 1408 { 1409 struct client *c = tty->client; 1410 1411 if (c->overlay_check == NULL) { 1412 r->px[0] = px; 1413 r->nx[0] = nx; 1414 r->px[1] = 0; 1415 r->nx[1] = 0; 1416 r->px[2] = 0; 1417 r->nx[2] = 0; 1418 return; 1419 } 1420 1421 c->overlay_check(c, c->overlay_data, px, py, nx, r); 1422 } 1423 1424 void 1425 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1426 u_int atx, u_int aty, const struct grid_cell *defaults, 1427 struct colour_palette *palette) 1428 { 1429 struct grid *gd = s->grid; 1430 struct grid_cell gc, last; 1431 const struct grid_cell *gcp; 1432 struct grid_line *gl; 1433 struct client *c = tty->client; 1434 struct overlay_ranges r; 1435 u_int i, j, ux, sx, width, hidden, eux, nxx; 1436 u_int cellsize; 1437 int flags, cleared = 0, wrapped = 0; 1438 char buf[512]; 1439 size_t len; 1440 1441 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1442 px, py, nx, atx, aty); 1443 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1444 defaults->bg); 1445 1446 /* 1447 * py is the line in the screen to draw. 1448 * px is the start x and nx is the width to draw. 1449 * atx,aty is the line on the terminal to draw it. 1450 */ 1451 1452 flags = (tty->flags & TTY_NOCURSOR); 1453 tty->flags |= TTY_NOCURSOR; 1454 tty_update_mode(tty, tty->mode, s); 1455 1456 tty_region_off(tty); 1457 tty_margin_off(tty); 1458 1459 /* 1460 * Clamp the width to cellsize - note this is not cellused, because 1461 * there may be empty background cells after it (from BCE). 1462 */ 1463 sx = screen_size_x(s); 1464 if (nx > sx) 1465 nx = sx; 1466 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1467 if (sx > cellsize) 1468 sx = cellsize; 1469 if (sx > tty->sx) 1470 sx = tty->sx; 1471 if (sx > nx) 1472 sx = nx; 1473 ux = 0; 1474 1475 if (py == 0) 1476 gl = NULL; 1477 else 1478 gl = grid_get_line(gd, gd->hsize + py - 1); 1479 if (gl == NULL || 1480 (~gl->flags & GRID_LINE_WRAPPED) || 1481 atx != 0 || 1482 tty->cx < tty->sx || 1483 nx < tty->sx) { 1484 if (nx < tty->sx && 1485 atx == 0 && 1486 px + sx != nx && 1487 tty_term_has(tty->term, TTYC_EL1) && 1488 !tty_fake_bce(tty, defaults, 8) && 1489 c->overlay_check == NULL) { 1490 tty_default_attributes(tty, defaults, palette, 8, 1491 s->hyperlinks); 1492 tty_cursor(tty, nx - 1, aty); 1493 tty_putcode(tty, TTYC_EL1); 1494 cleared = 1; 1495 } 1496 } else { 1497 log_debug("%s: wrapped line %u", __func__, aty); 1498 wrapped = 1; 1499 } 1500 1501 memcpy(&last, &grid_default_cell, sizeof last); 1502 len = 0; 1503 width = 0; 1504 1505 for (i = 0; i < sx; i++) { 1506 grid_view_get_cell(gd, px + i, py, &gc); 1507 gcp = tty_check_codeset(tty, &gc); 1508 if (len != 0 && 1509 (!tty_check_overlay(tty, atx + ux + width, aty) || 1510 (gcp->attr & GRID_ATTR_CHARSET) || 1511 gcp->flags != last.flags || 1512 gcp->attr != last.attr || 1513 gcp->fg != last.fg || 1514 gcp->bg != last.bg || 1515 gcp->us != last.us || 1516 gcp->link != last.link || 1517 ux + width + gcp->data.width > nx || 1518 (sizeof buf) - len < gcp->data.size)) { 1519 tty_attributes(tty, &last, defaults, palette, 1520 s->hyperlinks); 1521 if (last.flags & GRID_FLAG_CLEARED) { 1522 log_debug("%s: %zu cleared", __func__, len); 1523 tty_clear_line(tty, defaults, aty, atx + ux, 1524 width, last.bg); 1525 } else { 1526 if (!wrapped || atx != 0 || ux != 0) 1527 tty_cursor(tty, atx + ux, aty); 1528 tty_putn(tty, buf, len, width); 1529 } 1530 ux += width; 1531 1532 len = 0; 1533 width = 0; 1534 wrapped = 0; 1535 } 1536 1537 if (gcp->flags & GRID_FLAG_SELECTED) 1538 screen_select_cell(s, &last, gcp); 1539 else 1540 memcpy(&last, gcp, sizeof last); 1541 1542 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width, 1543 &r); 1544 hidden = 0; 1545 for (j = 0; j < OVERLAY_MAX_RANGES; j++) 1546 hidden += r.nx[j]; 1547 hidden = gcp->data.width - hidden; 1548 if (hidden != 0 && hidden == gcp->data.width) { 1549 if (~gcp->flags & GRID_FLAG_PADDING) 1550 ux += gcp->data.width; 1551 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1552 if (~gcp->flags & GRID_FLAG_PADDING) { 1553 tty_attributes(tty, &last, defaults, palette, 1554 s->hyperlinks); 1555 for (j = 0; j < OVERLAY_MAX_RANGES; j++) { 1556 if (r.nx[j] == 0) 1557 continue; 1558 /* Effective width drawn so far. */ 1559 eux = r.px[j] - atx; 1560 if (eux < nx) { 1561 tty_cursor(tty, r.px[j], aty); 1562 nxx = nx - eux; 1563 if (r.nx[j] > nxx) 1564 r.nx[j] = nxx; 1565 tty_repeat_space(tty, r.nx[j]); 1566 ux = eux + r.nx[j]; 1567 } 1568 } 1569 } 1570 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1571 tty_attributes(tty, &last, defaults, palette, 1572 s->hyperlinks); 1573 tty_cursor(tty, atx + ux, aty); 1574 for (j = 0; j < gcp->data.size; j++) 1575 tty_putc(tty, gcp->data.data[j]); 1576 ux += gcp->data.width; 1577 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1578 memcpy(buf + len, gcp->data.data, gcp->data.size); 1579 len += gcp->data.size; 1580 width += gcp->data.width; 1581 } 1582 } 1583 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1584 tty_attributes(tty, &last, defaults, palette, s->hyperlinks); 1585 if (last.flags & GRID_FLAG_CLEARED) { 1586 log_debug("%s: %zu cleared (end)", __func__, len); 1587 tty_clear_line(tty, defaults, aty, atx + ux, width, 1588 last.bg); 1589 } else { 1590 if (!wrapped || atx != 0 || ux != 0) 1591 tty_cursor(tty, atx + ux, aty); 1592 tty_putn(tty, buf, len, width); 1593 } 1594 ux += width; 1595 } 1596 1597 if (!cleared && ux < nx) { 1598 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1599 nx - ux, len); 1600 tty_default_attributes(tty, defaults, palette, 8, 1601 s->hyperlinks); 1602 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1603 } 1604 1605 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1606 tty_update_mode(tty, tty->mode, s); 1607 } 1608 1609 #ifdef ENABLE_SIXEL 1610 /* Update context for client. */ 1611 static int 1612 tty_set_client_cb(struct tty_ctx *ttyctx, struct client *c) 1613 { 1614 struct window_pane *wp = ttyctx->arg; 1615 1616 if (c->session->curw->window != wp->window) 1617 return (0); 1618 if (wp->layout_cell == NULL) 1619 return (0); 1620 1621 /* Set the properties relevant to the current client. */ 1622 ttyctx->bigger = tty_window_offset(&c->tty, &ttyctx->wox, &ttyctx->woy, 1623 &ttyctx->wsx, &ttyctx->wsy); 1624 1625 ttyctx->yoff = ttyctx->ryoff = wp->yoff; 1626 if (status_at_line(c) == 0) 1627 ttyctx->yoff += status_line_size(c); 1628 1629 return (1); 1630 } 1631 1632 void 1633 tty_draw_images(struct client *c, struct window_pane *wp, struct screen *s) 1634 { 1635 struct image *im; 1636 struct tty_ctx ttyctx; 1637 1638 TAILQ_FOREACH(im, &s->images, entry) { 1639 memset(&ttyctx, 0, sizeof ttyctx); 1640 1641 /* Set the client independent properties. */ 1642 ttyctx.ocx = im->px; 1643 ttyctx.ocy = im->py; 1644 1645 ttyctx.orlower = s->rlower; 1646 ttyctx.orupper = s->rupper; 1647 1648 ttyctx.xoff = ttyctx.rxoff = wp->xoff; 1649 ttyctx.sx = wp->sx; 1650 ttyctx.sy = wp->sy; 1651 1652 ttyctx.ptr = im; 1653 ttyctx.arg = wp; 1654 ttyctx.set_client_cb = tty_set_client_cb; 1655 ttyctx.allow_invisible_panes = 1; 1656 tty_write_one(tty_cmd_sixelimage, c, &ttyctx); 1657 } 1658 } 1659 #endif 1660 1661 void 1662 tty_sync_start(struct tty *tty) 1663 { 1664 if (tty->flags & TTY_BLOCK) 1665 return; 1666 if (tty->flags & TTY_SYNCING) 1667 return; 1668 tty->flags |= TTY_SYNCING; 1669 1670 if (tty_term_has(tty->term, TTYC_SYNC)) { 1671 log_debug("%s sync start", tty->client->name); 1672 tty_putcode_i(tty, TTYC_SYNC, 1); 1673 } 1674 } 1675 1676 void 1677 tty_sync_end(struct tty *tty) 1678 { 1679 if (tty->flags & TTY_BLOCK) 1680 return; 1681 if (~tty->flags & TTY_SYNCING) 1682 return; 1683 tty->flags &= ~TTY_SYNCING; 1684 1685 if (tty_term_has(tty->term, TTYC_SYNC)) { 1686 log_debug("%s sync end", tty->client->name); 1687 tty_putcode_i(tty, TTYC_SYNC, 2); 1688 } 1689 } 1690 1691 static int 1692 tty_client_ready(const struct tty_ctx *ctx, struct client *c) 1693 { 1694 if (c->session == NULL || c->tty.term == NULL) 1695 return (0); 1696 if (c->flags & CLIENT_SUSPENDED) 1697 return (0); 1698 1699 /* 1700 * If invisible panes are allowed (used for passthrough), don't care if 1701 * redrawing or frozen. 1702 */ 1703 if (ctx->allow_invisible_panes) 1704 return (1); 1705 1706 if (c->flags & CLIENT_REDRAWWINDOW) 1707 return (0); 1708 if (c->tty.flags & TTY_FREEZE) 1709 return (0); 1710 return (1); 1711 } 1712 1713 void 1714 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1715 struct tty_ctx *ctx) 1716 { 1717 struct client *c; 1718 int state; 1719 1720 if (ctx->set_client_cb == NULL) 1721 return; 1722 TAILQ_FOREACH(c, &clients, entry) { 1723 if (tty_client_ready(ctx, c)) { 1724 state = ctx->set_client_cb(ctx, c); 1725 if (state == -1) 1726 break; 1727 if (state == 0) 1728 continue; 1729 cmdfn(&c->tty, ctx); 1730 } 1731 } 1732 } 1733 1734 #ifdef ENABLE_SIXEL 1735 /* Only write to the incoming tty instead of every client. */ 1736 static void 1737 tty_write_one(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1738 struct client *c, struct tty_ctx *ctx) 1739 { 1740 if (ctx->set_client_cb == NULL) 1741 return; 1742 if ((ctx->set_client_cb(ctx, c)) == 1) 1743 cmdfn(&c->tty, ctx); 1744 } 1745 #endif 1746 1747 void 1748 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1749 { 1750 struct client *c = tty->client; 1751 1752 if (ctx->bigger || 1753 !tty_full_width(tty, ctx) || 1754 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1755 (!tty_term_has(tty->term, TTYC_ICH) && 1756 !tty_term_has(tty->term, TTYC_ICH1)) || 1757 c->overlay_check != NULL) { 1758 tty_draw_pane(tty, ctx, ctx->ocy); 1759 return; 1760 } 1761 1762 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1763 ctx->s->hyperlinks); 1764 1765 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1766 1767 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1768 } 1769 1770 void 1771 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1772 { 1773 struct client *c = tty->client; 1774 1775 if (ctx->bigger || 1776 !tty_full_width(tty, ctx) || 1777 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1778 (!tty_term_has(tty->term, TTYC_DCH) && 1779 !tty_term_has(tty->term, TTYC_DCH1)) || 1780 c->overlay_check != NULL) { 1781 tty_draw_pane(tty, ctx, ctx->ocy); 1782 return; 1783 } 1784 1785 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1786 ctx->s->hyperlinks); 1787 1788 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1789 1790 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1791 } 1792 1793 void 1794 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1795 { 1796 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1797 ctx->s->hyperlinks); 1798 1799 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1800 } 1801 1802 void 1803 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1804 { 1805 struct client *c = tty->client; 1806 1807 if (ctx->bigger || 1808 !tty_full_width(tty, ctx) || 1809 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1810 !tty_term_has(tty->term, TTYC_CSR) || 1811 !tty_term_has(tty->term, TTYC_IL1) || 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_off(tty); 1824 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1825 1826 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1827 tty->cx = tty->cy = UINT_MAX; 1828 } 1829 1830 void 1831 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1832 { 1833 struct client *c = tty->client; 1834 1835 if (ctx->bigger || 1836 !tty_full_width(tty, ctx) || 1837 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1838 !tty_term_has(tty->term, TTYC_CSR) || 1839 !tty_term_has(tty->term, TTYC_DL1) || 1840 ctx->sx == 1 || 1841 ctx->sy == 1 || 1842 c->overlay_check != NULL) { 1843 tty_redraw_region(tty, ctx); 1844 return; 1845 } 1846 1847 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1848 ctx->s->hyperlinks); 1849 1850 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1851 tty_margin_off(tty); 1852 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1853 1854 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1855 tty->cx = tty->cy = UINT_MAX; 1856 } 1857 1858 void 1859 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1860 { 1861 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1862 ctx->s->hyperlinks); 1863 1864 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1865 } 1866 1867 void 1868 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1869 { 1870 u_int nx = ctx->sx - ctx->ocx; 1871 1872 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1873 ctx->s->hyperlinks); 1874 1875 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1876 } 1877 1878 void 1879 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1880 { 1881 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1882 ctx->s->hyperlinks); 1883 1884 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1885 } 1886 1887 void 1888 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1889 { 1890 struct client *c = tty->client; 1891 1892 if (ctx->ocy != ctx->orupper) 1893 return; 1894 1895 if (ctx->bigger || 1896 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1897 tty_fake_bce(tty, &ctx->defaults, 8) || 1898 !tty_term_has(tty->term, TTYC_CSR) || 1899 (!tty_term_has(tty->term, TTYC_RI) && 1900 !tty_term_has(tty->term, TTYC_RIN)) || 1901 ctx->sx == 1 || 1902 ctx->sy == 1 || 1903 c->overlay_check != NULL) { 1904 tty_redraw_region(tty, ctx); 1905 return; 1906 } 1907 1908 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1909 ctx->s->hyperlinks); 1910 1911 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1912 tty_margin_pane(tty, ctx); 1913 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1914 1915 if (tty_term_has(tty->term, TTYC_RI)) 1916 tty_putcode(tty, TTYC_RI); 1917 else 1918 tty_putcode_i(tty, TTYC_RIN, 1); 1919 } 1920 1921 void 1922 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1923 { 1924 struct client *c = tty->client; 1925 1926 if (ctx->ocy != ctx->orlower) 1927 return; 1928 1929 if (ctx->bigger || 1930 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1931 tty_fake_bce(tty, &ctx->defaults, 8) || 1932 !tty_term_has(tty->term, TTYC_CSR) || 1933 ctx->sx == 1 || 1934 ctx->sy == 1 || 1935 c->overlay_check != NULL) { 1936 tty_redraw_region(tty, ctx); 1937 return; 1938 } 1939 1940 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1941 ctx->s->hyperlinks); 1942 1943 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1944 tty_margin_pane(tty, ctx); 1945 1946 /* 1947 * If we want to wrap a pane while using margins, the cursor needs to 1948 * be exactly on the right of the region. If the cursor is entirely off 1949 * the edge - move it back to the right. Some terminals are funny about 1950 * this and insert extra spaces, so only use the right if margins are 1951 * enabled. 1952 */ 1953 if (ctx->xoff + ctx->ocx > tty->rright) { 1954 if (!tty_use_margin(tty)) 1955 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1956 else 1957 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1958 } else 1959 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1960 1961 tty_putc(tty, '\n'); 1962 } 1963 1964 void 1965 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1966 { 1967 struct client *c = tty->client; 1968 u_int i; 1969 1970 if (ctx->bigger || 1971 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1972 tty_fake_bce(tty, &ctx->defaults, 8) || 1973 !tty_term_has(tty->term, TTYC_CSR) || 1974 ctx->sx == 1 || 1975 ctx->sy == 1 || 1976 c->overlay_check != NULL) { 1977 tty_redraw_region(tty, ctx); 1978 return; 1979 } 1980 1981 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1982 ctx->s->hyperlinks); 1983 1984 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1985 tty_margin_pane(tty, ctx); 1986 1987 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1988 if (!tty_use_margin(tty)) 1989 tty_cursor(tty, 0, tty->rlower); 1990 else 1991 tty_cursor(tty, tty->rright, tty->rlower); 1992 for (i = 0; i < ctx->num; i++) 1993 tty_putc(tty, '\n'); 1994 } else { 1995 if (tty->cy == UINT_MAX) 1996 tty_cursor(tty, 0, 0); 1997 else 1998 tty_cursor(tty, 0, tty->cy); 1999 tty_putcode_i(tty, TTYC_INDN, ctx->num); 2000 } 2001 } 2002 2003 void 2004 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 2005 { 2006 u_int i; 2007 struct client *c = tty->client; 2008 2009 if (ctx->bigger || 2010 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 2011 tty_fake_bce(tty, &ctx->defaults, 8) || 2012 !tty_term_has(tty->term, TTYC_CSR) || 2013 (!tty_term_has(tty->term, TTYC_RI) && 2014 !tty_term_has(tty->term, TTYC_RIN)) || 2015 ctx->sx == 1 || 2016 ctx->sy == 1 || 2017 c->overlay_check != NULL) { 2018 tty_redraw_region(tty, ctx); 2019 return; 2020 } 2021 2022 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2023 ctx->s->hyperlinks); 2024 2025 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2026 tty_margin_pane(tty, ctx); 2027 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 2028 2029 if (tty_term_has(tty->term, TTYC_RIN)) 2030 tty_putcode_i(tty, TTYC_RIN, ctx->num); 2031 else { 2032 for (i = 0; i < ctx->num; i++) 2033 tty_putcode(tty, TTYC_RI); 2034 } 2035 } 2036 2037 void 2038 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 2039 { 2040 u_int px, py, nx, ny; 2041 2042 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2043 ctx->s->hyperlinks); 2044 2045 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2046 tty_margin_off(tty); 2047 2048 px = 0; 2049 nx = ctx->sx; 2050 py = ctx->ocy + 1; 2051 ny = ctx->sy - ctx->ocy - 1; 2052 2053 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2054 2055 px = ctx->ocx; 2056 nx = ctx->sx - ctx->ocx; 2057 py = ctx->ocy; 2058 2059 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 2060 } 2061 2062 void 2063 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 2064 { 2065 u_int px, py, nx, ny; 2066 2067 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2068 ctx->s->hyperlinks); 2069 2070 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2071 tty_margin_off(tty); 2072 2073 px = 0; 2074 nx = ctx->sx; 2075 py = 0; 2076 ny = ctx->ocy; 2077 2078 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2079 2080 px = 0; 2081 nx = ctx->ocx + 1; 2082 py = ctx->ocy; 2083 2084 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 2085 } 2086 2087 void 2088 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 2089 { 2090 u_int px, py, nx, ny; 2091 2092 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 2093 ctx->s->hyperlinks); 2094 2095 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2096 tty_margin_off(tty); 2097 2098 px = 0; 2099 nx = ctx->sx; 2100 py = 0; 2101 ny = ctx->sy; 2102 2103 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2104 } 2105 2106 void 2107 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 2108 { 2109 u_int i, j; 2110 2111 if (ctx->bigger) { 2112 ctx->redraw_cb(ctx); 2113 return; 2114 } 2115 2116 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette, 2117 ctx->s->hyperlinks); 2118 2119 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2120 tty_margin_off(tty); 2121 2122 for (j = 0; j < ctx->sy; j++) { 2123 tty_cursor_pane(tty, ctx, 0, j); 2124 for (i = 0; i < ctx->sx; i++) 2125 tty_putc(tty, 'E'); 2126 } 2127 } 2128 2129 void 2130 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 2131 { 2132 const struct grid_cell *gcp = ctx->cell; 2133 struct screen *s = ctx->s; 2134 struct overlay_ranges r; 2135 u_int px, py, i, vis = 0; 2136 2137 px = ctx->xoff + ctx->ocx - ctx->wox; 2138 py = ctx->yoff + ctx->ocy - ctx->woy; 2139 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 2140 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 2141 return; 2142 2143 /* Handle partially obstructed wide characters. */ 2144 if (gcp->data.width > 1) { 2145 tty_check_overlay_range(tty, px, py, gcp->data.width, &r); 2146 for (i = 0; i < OVERLAY_MAX_RANGES; i++) 2147 vis += r.nx[i]; 2148 if (vis < gcp->data.width) { 2149 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width, 2150 px, py, &ctx->defaults, ctx->palette); 2151 return; 2152 } 2153 } 2154 2155 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 2156 ctx->ocy == ctx->orlower && 2157 tty_full_width(tty, ctx)) 2158 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2159 2160 tty_margin_off(tty); 2161 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2162 2163 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette, 2164 ctx->s->hyperlinks); 2165 2166 if (ctx->num == 1) 2167 tty_invalidate(tty); 2168 } 2169 2170 void 2171 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 2172 { 2173 struct overlay_ranges r; 2174 u_int i, px, py, cx; 2175 char *cp = ctx->ptr; 2176 2177 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 2178 return; 2179 2180 if (ctx->bigger && 2181 (ctx->xoff + ctx->ocx < ctx->wox || 2182 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 2183 if (!ctx->wrapped || 2184 !tty_full_width(tty, ctx) || 2185 (tty->term->flags & TERM_NOAM) || 2186 ctx->xoff + ctx->ocx != 0 || 2187 ctx->yoff + ctx->ocy != tty->cy + 1 || 2188 tty->cx < tty->sx || 2189 tty->cy == tty->rlower) 2190 tty_draw_pane(tty, ctx, ctx->ocy); 2191 else 2192 ctx->redraw_cb(ctx); 2193 return; 2194 } 2195 2196 tty_margin_off(tty); 2197 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2198 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks); 2199 2200 /* Get tty position from pane position for overlay check. */ 2201 px = ctx->xoff + ctx->ocx - ctx->wox; 2202 py = ctx->yoff + ctx->ocy - ctx->woy; 2203 2204 tty_check_overlay_range(tty, px, py, ctx->num, &r); 2205 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 2206 if (r.nx[i] == 0) 2207 continue; 2208 /* Convert back to pane position for printing. */ 2209 cx = r.px[i] - ctx->xoff + ctx->wox; 2210 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy); 2211 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]); 2212 } 2213 } 2214 2215 void 2216 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2217 { 2218 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num); 2219 } 2220 2221 void 2222 tty_set_selection(struct tty *tty, const char *flags, const char *buf, 2223 size_t len) 2224 { 2225 char *encoded; 2226 size_t size; 2227 2228 if (~tty->flags & TTY_STARTED) 2229 return; 2230 if (!tty_term_has(tty->term, TTYC_MS)) 2231 return; 2232 2233 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2234 encoded = xmalloc(size); 2235 2236 b64_ntop(buf, len, encoded, size); 2237 tty->flags |= TTY_NOBLOCK; 2238 tty_putcode_ss(tty, TTYC_MS, flags, encoded); 2239 2240 free(encoded); 2241 } 2242 2243 void 2244 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2245 { 2246 tty->flags |= TTY_NOBLOCK; 2247 tty_add(tty, ctx->ptr, ctx->num); 2248 tty_invalidate(tty); 2249 } 2250 2251 #ifdef ENABLE_SIXEL 2252 void 2253 tty_cmd_sixelimage(struct tty *tty, const struct tty_ctx *ctx) 2254 { 2255 struct image *im = ctx->ptr; 2256 struct sixel_image *si = im->data; 2257 struct sixel_image *new; 2258 char *data; 2259 size_t size; 2260 u_int cx = ctx->ocx, cy = ctx->ocy, sx, sy; 2261 u_int i, j, x, y, rx, ry; 2262 int fallback = 0; 2263 2264 if ((~tty->term->flags & TERM_SIXEL) && 2265 !tty_term_has(tty->term, TTYC_SXL)) 2266 fallback = 1; 2267 if (tty->xpixel == 0 || tty->ypixel == 0) 2268 fallback = 1; 2269 2270 sixel_size_in_cells(si, &sx, &sy); 2271 log_debug("%s: image is %ux%u", __func__, sx, sy); 2272 if (!tty_clamp_area(tty, ctx, cx, cy, sx, sy, &i, &j, &x, &y, &rx, &ry)) 2273 return; 2274 log_debug("%s: clamping to %u,%u-%u,%u", __func__, i, j, rx, ry); 2275 2276 if (fallback == 1) { 2277 data = xstrdup(im->fallback); 2278 size = strlen(data); 2279 } else { 2280 new = sixel_scale(si, tty->xpixel, tty->ypixel, i, j, rx, ry, 0); 2281 if (new == NULL) 2282 return; 2283 2284 data = sixel_print(new, si, &size); 2285 } 2286 if (data != NULL) { 2287 log_debug("%s: %zu bytes: %s", __func__, size, data); 2288 tty_region_off(tty); 2289 tty_margin_off(tty); 2290 tty_cursor(tty, x, y); 2291 2292 tty->flags |= TTY_NOBLOCK; 2293 tty_add(tty, data, size); 2294 tty_invalidate(tty); 2295 free(data); 2296 } 2297 2298 if (fallback == 0) 2299 sixel_free(new); 2300 } 2301 #endif 2302 2303 void 2304 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2305 { 2306 if (ctx->num == 0x11) { 2307 /* 2308 * This is an overlay and a command that moves the cursor so 2309 * start synchronized updates. 2310 */ 2311 tty_sync_start(tty); 2312 } else if (~ctx->num & 0x10) { 2313 /* 2314 * This is a pane. If there is an overlay, always start; 2315 * otherwise, only if requested. 2316 */ 2317 if (ctx->num || tty->client->overlay_draw != NULL) 2318 tty_sync_start(tty); 2319 } 2320 } 2321 2322 void 2323 tty_cell(struct tty *tty, const struct grid_cell *gc, 2324 const struct grid_cell *defaults, struct colour_palette *palette, 2325 struct hyperlinks *hl) 2326 { 2327 const struct grid_cell *gcp; 2328 2329 /* Skip last character if terminal is stupid. */ 2330 if ((tty->term->flags & TERM_NOAM) && 2331 tty->cy == tty->sy - 1 && 2332 tty->cx == tty->sx - 1) 2333 return; 2334 2335 /* If this is a padding character, do nothing. */ 2336 if (gc->flags & GRID_FLAG_PADDING) 2337 return; 2338 2339 /* Check the output codeset and apply attributes. */ 2340 gcp = tty_check_codeset(tty, gc); 2341 tty_attributes(tty, gcp, defaults, palette, hl); 2342 2343 /* If it is a single character, write with putc to handle ACS. */ 2344 if (gcp->data.size == 1) { 2345 tty_attributes(tty, gcp, defaults, palette, hl); 2346 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2347 return; 2348 tty_putc(tty, *gcp->data.data); 2349 return; 2350 } 2351 2352 /* Write the data. */ 2353 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2354 } 2355 2356 void 2357 tty_reset(struct tty *tty) 2358 { 2359 struct grid_cell *gc = &tty->cell; 2360 2361 if (!grid_cells_equal(gc, &grid_default_cell)) { 2362 if (gc->link != 0) 2363 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2364 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2365 tty_putcode(tty, TTYC_RMACS); 2366 tty_putcode(tty, TTYC_SGR0); 2367 memcpy(gc, &grid_default_cell, sizeof *gc); 2368 } 2369 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2370 } 2371 2372 static void 2373 tty_invalidate(struct tty *tty) 2374 { 2375 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2376 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2377 2378 tty->cx = tty->cy = UINT_MAX; 2379 tty->rupper = tty->rleft = UINT_MAX; 2380 tty->rlower = tty->rright = UINT_MAX; 2381 2382 if (tty->flags & TTY_STARTED) { 2383 if (tty_use_margin(tty)) 2384 tty_putcode(tty, TTYC_ENMG); 2385 tty_putcode(tty, TTYC_SGR0); 2386 2387 tty->mode = ALL_MODES; 2388 tty_update_mode(tty, MODE_CURSOR, NULL); 2389 2390 tty_cursor(tty, 0, 0); 2391 tty_region_off(tty); 2392 tty_margin_off(tty); 2393 } else 2394 tty->mode = MODE_CURSOR; 2395 } 2396 2397 /* Turn off margin. */ 2398 void 2399 tty_region_off(struct tty *tty) 2400 { 2401 tty_region(tty, 0, tty->sy - 1); 2402 } 2403 2404 /* Set region inside pane. */ 2405 static void 2406 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2407 u_int rlower) 2408 { 2409 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2410 ctx->yoff + rlower - ctx->woy); 2411 } 2412 2413 /* Set region at absolute position. */ 2414 static void 2415 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2416 { 2417 if (tty->rlower == rlower && tty->rupper == rupper) 2418 return; 2419 if (!tty_term_has(tty->term, TTYC_CSR)) 2420 return; 2421 2422 tty->rupper = rupper; 2423 tty->rlower = rlower; 2424 2425 /* 2426 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2427 * 0,0 if it is beyond the last column (they do not reset their wrap 2428 * flag so further output causes a line feed). As a workaround, do an 2429 * explicit move to 0 first. 2430 */ 2431 if (tty->cx >= tty->sx) { 2432 if (tty->cy == UINT_MAX) 2433 tty_cursor(tty, 0, 0); 2434 else 2435 tty_cursor(tty, 0, tty->cy); 2436 } 2437 2438 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2439 tty->cx = tty->cy = UINT_MAX; 2440 } 2441 2442 /* Turn off margin. */ 2443 void 2444 tty_margin_off(struct tty *tty) 2445 { 2446 tty_margin(tty, 0, tty->sx - 1); 2447 } 2448 2449 /* Set margin inside pane. */ 2450 static void 2451 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2452 { 2453 tty_margin(tty, ctx->xoff - ctx->wox, 2454 ctx->xoff + ctx->sx - 1 - ctx->wox); 2455 } 2456 2457 /* Set margin at absolute position. */ 2458 static void 2459 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2460 { 2461 if (!tty_use_margin(tty)) 2462 return; 2463 if (tty->rleft == rleft && tty->rright == rright) 2464 return; 2465 2466 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2467 2468 tty->rleft = rleft; 2469 tty->rright = rright; 2470 2471 if (rleft == 0 && rright == tty->sx - 1) 2472 tty_putcode(tty, TTYC_CLMG); 2473 else 2474 tty_putcode_ii(tty, TTYC_CMG, rleft, rright); 2475 tty->cx = tty->cy = UINT_MAX; 2476 } 2477 2478 /* 2479 * Move the cursor, unless it would wrap itself when the next character is 2480 * printed. 2481 */ 2482 static void 2483 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2484 u_int cx, u_int cy) 2485 { 2486 if (!ctx->wrapped || 2487 !tty_full_width(tty, ctx) || 2488 (tty->term->flags & TERM_NOAM) || 2489 ctx->xoff + cx != 0 || 2490 ctx->yoff + cy != tty->cy + 1 || 2491 tty->cx < tty->sx || 2492 tty->cy == tty->rlower) 2493 tty_cursor_pane(tty, ctx, cx, cy); 2494 else 2495 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2496 } 2497 2498 /* Move cursor inside pane. */ 2499 static void 2500 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2501 { 2502 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2503 } 2504 2505 /* Move cursor to absolute position. */ 2506 void 2507 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2508 { 2509 struct tty_term *term = tty->term; 2510 u_int thisx, thisy; 2511 int change; 2512 2513 if (tty->flags & TTY_BLOCK) 2514 return; 2515 2516 thisx = tty->cx; 2517 thisy = tty->cy; 2518 2519 /* 2520 * If in the automargin space, and want to be there, do not move. 2521 * Otherwise, force the cursor to be in range (and complain). 2522 */ 2523 if (cx == thisx && cy == thisy && cx == tty->sx) 2524 return; 2525 if (cx > tty->sx - 1) { 2526 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1); 2527 cx = tty->sx - 1; 2528 } 2529 2530 /* No change. */ 2531 if (cx == thisx && cy == thisy) 2532 return; 2533 2534 /* Currently at the very end of the line - use absolute movement. */ 2535 if (thisx > tty->sx - 1) 2536 goto absolute; 2537 2538 /* Move to home position (0, 0). */ 2539 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2540 tty_putcode(tty, TTYC_HOME); 2541 goto out; 2542 } 2543 2544 /* Zero on the next line. */ 2545 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2546 (!tty_use_margin(tty) || tty->rleft == 0)) { 2547 tty_putc(tty, '\r'); 2548 tty_putc(tty, '\n'); 2549 goto out; 2550 } 2551 2552 /* Moving column or row. */ 2553 if (cy == thisy) { 2554 /* 2555 * Moving column only, row staying the same. 2556 */ 2557 2558 /* To left edge. */ 2559 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2560 tty_putc(tty, '\r'); 2561 goto out; 2562 } 2563 2564 /* One to the left. */ 2565 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2566 tty_putcode(tty, TTYC_CUB1); 2567 goto out; 2568 } 2569 2570 /* One to the right. */ 2571 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2572 tty_putcode(tty, TTYC_CUF1); 2573 goto out; 2574 } 2575 2576 /* Calculate difference. */ 2577 change = thisx - cx; /* +ve left, -ve right */ 2578 2579 /* 2580 * Use HPA if change is larger than absolute, otherwise move 2581 * the cursor with CUB/CUF. 2582 */ 2583 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2584 tty_putcode_i(tty, TTYC_HPA, cx); 2585 goto out; 2586 } else if (change > 0 && 2587 tty_term_has(term, TTYC_CUB) && 2588 !tty_use_margin(tty)) { 2589 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2590 tty_putcode(tty, TTYC_CUB1); 2591 tty_putcode(tty, TTYC_CUB1); 2592 goto out; 2593 } 2594 tty_putcode_i(tty, TTYC_CUB, change); 2595 goto out; 2596 } else if (change < 0 && 2597 tty_term_has(term, TTYC_CUF) && 2598 !tty_use_margin(tty)) { 2599 tty_putcode_i(tty, TTYC_CUF, -change); 2600 goto out; 2601 } 2602 } else if (cx == thisx) { 2603 /* 2604 * Moving row only, column staying the same. 2605 */ 2606 2607 /* One above. */ 2608 if (thisy != tty->rupper && 2609 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2610 tty_putcode(tty, TTYC_CUU1); 2611 goto out; 2612 } 2613 2614 /* One below. */ 2615 if (thisy != tty->rlower && 2616 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2617 tty_putcode(tty, TTYC_CUD1); 2618 goto out; 2619 } 2620 2621 /* Calculate difference. */ 2622 change = thisy - cy; /* +ve up, -ve down */ 2623 2624 /* 2625 * Try to use VPA if change is larger than absolute or if this 2626 * change would cross the scroll region, otherwise use CUU/CUD. 2627 */ 2628 if ((u_int) abs(change) > cy || 2629 (change < 0 && cy - change > tty->rlower) || 2630 (change > 0 && cy - change < tty->rupper)) { 2631 if (tty_term_has(term, TTYC_VPA)) { 2632 tty_putcode_i(tty, TTYC_VPA, cy); 2633 goto out; 2634 } 2635 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2636 tty_putcode_i(tty, TTYC_CUU, change); 2637 goto out; 2638 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2639 tty_putcode_i(tty, TTYC_CUD, -change); 2640 goto out; 2641 } 2642 } 2643 2644 absolute: 2645 /* Absolute movement. */ 2646 tty_putcode_ii(tty, TTYC_CUP, cy, cx); 2647 2648 out: 2649 tty->cx = cx; 2650 tty->cy = cy; 2651 } 2652 2653 static void 2654 tty_hyperlink(struct tty *tty, const struct grid_cell *gc, 2655 struct hyperlinks *hl) 2656 { 2657 const char *uri, *id; 2658 2659 if (gc->link == tty->cell.link) 2660 return; 2661 tty->cell.link = gc->link; 2662 2663 if (hl == NULL) 2664 return; 2665 2666 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id)) 2667 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2668 else 2669 tty_putcode_ss(tty, TTYC_HLS, id, uri); 2670 } 2671 2672 void 2673 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2674 const struct grid_cell *defaults, struct colour_palette *palette, 2675 struct hyperlinks *hl) 2676 { 2677 struct grid_cell *tc = &tty->cell, gc2; 2678 int changed; 2679 2680 /* Copy cell and update default colours. */ 2681 memcpy(&gc2, gc, sizeof gc2); 2682 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2683 if (gc2.fg == 8) 2684 gc2.fg = defaults->fg; 2685 if (gc2.bg == 8) 2686 gc2.bg = defaults->bg; 2687 } 2688 2689 /* Ignore cell if it is the same as the last one. */ 2690 if (gc2.attr == tty->last_cell.attr && 2691 gc2.fg == tty->last_cell.fg && 2692 gc2.bg == tty->last_cell.bg && 2693 gc2.us == tty->last_cell.us && 2694 gc2.link == tty->last_cell.link) 2695 return; 2696 2697 /* 2698 * If no setab, try to use the reverse attribute as a best-effort for a 2699 * non-default background. This is a bit of a hack but it doesn't do 2700 * any serious harm and makes a couple of applications happier. 2701 */ 2702 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2703 if (gc2.attr & GRID_ATTR_REVERSE) { 2704 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2705 gc2.attr &= ~GRID_ATTR_REVERSE; 2706 } else { 2707 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2708 gc2.attr |= GRID_ATTR_REVERSE; 2709 } 2710 } 2711 2712 /* Fix up the colours if necessary. */ 2713 tty_check_fg(tty, palette, &gc2); 2714 tty_check_bg(tty, palette, &gc2); 2715 tty_check_us(tty, palette, &gc2); 2716 2717 /* 2718 * If any bits are being cleared or the underline colour is now default, 2719 * reset everything. 2720 */ 2721 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2722 tty_reset(tty); 2723 2724 /* 2725 * Set the colours. This may call tty_reset() (so it comes next) and 2726 * may add to (NOT remove) the desired attributes. 2727 */ 2728 tty_colours(tty, &gc2); 2729 2730 /* Filter out attribute bits already set. */ 2731 changed = gc2.attr & ~tc->attr; 2732 tc->attr = gc2.attr; 2733 2734 /* Set the attributes. */ 2735 if (changed & GRID_ATTR_BRIGHT) 2736 tty_putcode(tty, TTYC_BOLD); 2737 if (changed & GRID_ATTR_DIM) 2738 tty_putcode(tty, TTYC_DIM); 2739 if (changed & GRID_ATTR_ITALICS) 2740 tty_set_italics(tty); 2741 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2742 if ((changed & GRID_ATTR_UNDERSCORE) || 2743 !tty_term_has(tty->term, TTYC_SMULX)) 2744 tty_putcode(tty, TTYC_SMUL); 2745 else if (changed & GRID_ATTR_UNDERSCORE_2) 2746 tty_putcode_i(tty, TTYC_SMULX, 2); 2747 else if (changed & GRID_ATTR_UNDERSCORE_3) 2748 tty_putcode_i(tty, TTYC_SMULX, 3); 2749 else if (changed & GRID_ATTR_UNDERSCORE_4) 2750 tty_putcode_i(tty, TTYC_SMULX, 4); 2751 else if (changed & GRID_ATTR_UNDERSCORE_5) 2752 tty_putcode_i(tty, TTYC_SMULX, 5); 2753 } 2754 if (changed & GRID_ATTR_BLINK) 2755 tty_putcode(tty, TTYC_BLINK); 2756 if (changed & GRID_ATTR_REVERSE) { 2757 if (tty_term_has(tty->term, TTYC_REV)) 2758 tty_putcode(tty, TTYC_REV); 2759 else if (tty_term_has(tty->term, TTYC_SMSO)) 2760 tty_putcode(tty, TTYC_SMSO); 2761 } 2762 if (changed & GRID_ATTR_HIDDEN) 2763 tty_putcode(tty, TTYC_INVIS); 2764 if (changed & GRID_ATTR_STRIKETHROUGH) 2765 tty_putcode(tty, TTYC_SMXX); 2766 if (changed & GRID_ATTR_OVERLINE) 2767 tty_putcode(tty, TTYC_SMOL); 2768 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2769 tty_putcode(tty, TTYC_SMACS); 2770 2771 /* Set hyperlink if any. */ 2772 tty_hyperlink(tty, gc, hl); 2773 2774 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2775 } 2776 2777 static void 2778 tty_colours(struct tty *tty, const struct grid_cell *gc) 2779 { 2780 struct grid_cell *tc = &tty->cell; 2781 2782 /* No changes? Nothing is necessary. */ 2783 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2784 return; 2785 2786 /* 2787 * Is either the default colour? This is handled specially because the 2788 * best solution might be to reset both colours to default, in which 2789 * case if only one is default need to fall onward to set the other 2790 * colour. 2791 */ 2792 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2793 /* 2794 * If don't have AX, send sgr0. This resets both colours to default. 2795 * Otherwise, try to set the default colour only as needed. 2796 */ 2797 if (!tty_term_flag(tty->term, TTYC_AX)) 2798 tty_reset(tty); 2799 else { 2800 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2801 tty_puts(tty, "\033[39m"); 2802 tc->fg = gc->fg; 2803 } 2804 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2805 tty_puts(tty, "\033[49m"); 2806 tc->bg = gc->bg; 2807 } 2808 } 2809 } 2810 2811 /* Set the foreground colour. */ 2812 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2813 tty_colours_fg(tty, gc); 2814 2815 /* 2816 * Set the background colour. This must come after the foreground as 2817 * tty_colours_fg() can call tty_reset(). 2818 */ 2819 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2820 tty_colours_bg(tty, gc); 2821 2822 /* Set the underscore colour. */ 2823 if (gc->us != tc->us) 2824 tty_colours_us(tty, gc); 2825 } 2826 2827 static void 2828 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2829 struct grid_cell *gc) 2830 { 2831 u_char r, g, b; 2832 u_int colours; 2833 int c; 2834 2835 /* 2836 * Perform substitution if this pane has a palette. If the bright 2837 * attribute is set and Nobr is not present, use the bright entry in 2838 * the palette by changing to the aixterm colour 2839 */ 2840 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2841 c = gc->fg; 2842 if (c < 8 && 2843 gc->attr & GRID_ATTR_BRIGHT && 2844 !tty_term_has(tty->term, TTYC_NOBR)) 2845 c += 90; 2846 if ((c = colour_palette_get(palette, c)) != -1) 2847 gc->fg = c; 2848 } 2849 2850 /* Is this a 24-bit colour? */ 2851 if (gc->fg & COLOUR_FLAG_RGB) { 2852 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2853 if (tty->term->flags & TERM_RGBCOLOURS) 2854 return; 2855 colour_split_rgb(gc->fg, &r, &g, &b); 2856 gc->fg = colour_find_rgb(r, g, b); 2857 } 2858 2859 /* How many colours does this terminal have? */ 2860 if (tty->term->flags & TERM_256COLOURS) 2861 colours = 256; 2862 else 2863 colours = tty_term_number(tty->term, TTYC_COLORS); 2864 2865 /* Is this a 256-colour colour? */ 2866 if (gc->fg & COLOUR_FLAG_256) { 2867 /* And not a 256 colour mode? */ 2868 if (colours < 256) { 2869 gc->fg = colour_256to16(gc->fg); 2870 if (gc->fg & 8) { 2871 gc->fg &= 7; 2872 if (colours >= 16) 2873 gc->fg += 90; 2874 } 2875 } 2876 return; 2877 } 2878 2879 /* Is this an aixterm colour? */ 2880 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2881 gc->fg -= 90; 2882 gc->attr |= GRID_ATTR_BRIGHT; 2883 } 2884 } 2885 2886 static void 2887 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2888 struct grid_cell *gc) 2889 { 2890 u_char r, g, b; 2891 u_int colours; 2892 int c; 2893 2894 /* Perform substitution if this pane has a palette. */ 2895 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2896 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2897 gc->bg = c; 2898 } 2899 2900 /* Is this a 24-bit colour? */ 2901 if (gc->bg & COLOUR_FLAG_RGB) { 2902 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2903 if (tty->term->flags & TERM_RGBCOLOURS) 2904 return; 2905 colour_split_rgb(gc->bg, &r, &g, &b); 2906 gc->bg = colour_find_rgb(r, g, b); 2907 } 2908 2909 /* How many colours does this terminal have? */ 2910 if (tty->term->flags & TERM_256COLOURS) 2911 colours = 256; 2912 else 2913 colours = tty_term_number(tty->term, TTYC_COLORS); 2914 2915 /* Is this a 256-colour colour? */ 2916 if (gc->bg & COLOUR_FLAG_256) { 2917 /* 2918 * And not a 256 colour mode? Translate to 16-colour 2919 * palette. Bold background doesn't exist portably, so just 2920 * discard the bold bit if set. 2921 */ 2922 if (colours < 256) { 2923 gc->bg = colour_256to16(gc->bg); 2924 if (gc->bg & 8) { 2925 gc->bg &= 7; 2926 if (colours >= 16) 2927 gc->bg += 90; 2928 } 2929 } 2930 return; 2931 } 2932 2933 /* Is this an aixterm colour? */ 2934 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2935 gc->bg -= 90; 2936 } 2937 2938 static void 2939 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2940 struct grid_cell *gc) 2941 { 2942 int c; 2943 2944 /* Perform substitution if this pane has a palette. */ 2945 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2946 if ((c = colour_palette_get(palette, gc->us)) != -1) 2947 gc->us = c; 2948 } 2949 2950 /* Convert underscore colour if only RGB can be supported. */ 2951 if (!tty_term_has(tty->term, TTYC_SETULC1)) { 2952 if ((c = colour_force_rgb (gc->us)) == -1) 2953 gc->us = 8; 2954 else 2955 gc->us = c; 2956 } 2957 } 2958 2959 static void 2960 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2961 { 2962 struct grid_cell *tc = &tty->cell; 2963 char s[32]; 2964 2965 /* 2966 * If the current colour is an aixterm bright colour and the new is not, 2967 * reset because some terminals do not clear bright correctly. 2968 */ 2969 if (tty->cell.fg >= 90 && 2970 tty->cell.bg <= 97 && 2971 (gc->fg < 90 || gc->fg > 97)) 2972 tty_reset(tty); 2973 2974 /* Is this a 24-bit or 256-colour colour? */ 2975 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2976 if (tty_try_colour(tty, gc->fg, "38") == 0) 2977 goto save; 2978 /* Should not get here, already converted in tty_check_fg. */ 2979 return; 2980 } 2981 2982 /* Is this an aixterm bright colour? */ 2983 if (gc->fg >= 90 && gc->fg <= 97) { 2984 if (tty->term->flags & TERM_256COLOURS) { 2985 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2986 tty_puts(tty, s); 2987 } else 2988 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8); 2989 goto save; 2990 } 2991 2992 /* Otherwise set the foreground colour. */ 2993 tty_putcode_i(tty, TTYC_SETAF, gc->fg); 2994 2995 save: 2996 /* Save the new values in the terminal current cell. */ 2997 tc->fg = gc->fg; 2998 } 2999 3000 static void 3001 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 3002 { 3003 struct grid_cell *tc = &tty->cell; 3004 char s[32]; 3005 3006 /* Is this a 24-bit or 256-colour colour? */ 3007 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 3008 if (tty_try_colour(tty, gc->bg, "48") == 0) 3009 goto save; 3010 /* Should not get here, already converted in tty_check_bg. */ 3011 return; 3012 } 3013 3014 /* Is this an aixterm bright colour? */ 3015 if (gc->bg >= 90 && gc->bg <= 97) { 3016 if (tty->term->flags & TERM_256COLOURS) { 3017 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 3018 tty_puts(tty, s); 3019 } else 3020 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8); 3021 goto save; 3022 } 3023 3024 /* Otherwise set the background colour. */ 3025 tty_putcode_i(tty, TTYC_SETAB, gc->bg); 3026 3027 save: 3028 /* Save the new values in the terminal current cell. */ 3029 tc->bg = gc->bg; 3030 } 3031 3032 static void 3033 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 3034 { 3035 struct grid_cell *tc = &tty->cell; 3036 u_int c; 3037 u_char r, g, b; 3038 3039 /* Clear underline colour. */ 3040 if (COLOUR_DEFAULT(gc->us)) { 3041 tty_putcode(tty, TTYC_OL); 3042 goto save; 3043 } 3044 3045 /* 3046 * If this is not an RGB colour, use Setulc1 if it exists, otherwise 3047 * convert. 3048 */ 3049 if (~gc->us & COLOUR_FLAG_RGB) { 3050 c = gc->us; 3051 if ((~c & COLOUR_FLAG_256) && (c >= 90 && c <= 97)) 3052 c -= 82; 3053 tty_putcode_i(tty, TTYC_SETULC1, c & ~COLOUR_FLAG_256); 3054 return; 3055 } 3056 3057 /* 3058 * Setulc and setal follows the ncurses(3) one argument "direct colour" 3059 * capability format. Calculate the colour value. 3060 */ 3061 colour_split_rgb(gc->us, &r, &g, &b); 3062 c = (65536 * r) + (256 * g) + b; 3063 3064 /* 3065 * Write the colour. Only use setal if the RGB flag is set because the 3066 * non-RGB version may be wrong. 3067 */ 3068 if (tty_term_has(tty->term, TTYC_SETULC)) 3069 tty_putcode_i(tty, TTYC_SETULC, c); 3070 else if (tty_term_has(tty->term, TTYC_SETAL) && 3071 tty_term_has(tty->term, TTYC_RGB)) 3072 tty_putcode_i(tty, TTYC_SETAL, c); 3073 3074 save: 3075 /* Save the new values in the terminal current cell. */ 3076 tc->us = gc->us; 3077 } 3078 3079 static int 3080 tty_try_colour(struct tty *tty, int colour, const char *type) 3081 { 3082 u_char r, g, b; 3083 3084 if (colour & COLOUR_FLAG_256) { 3085 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 3086 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff); 3087 else if (tty_term_has(tty->term, TTYC_SETAB)) 3088 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff); 3089 return (0); 3090 } 3091 3092 if (colour & COLOUR_FLAG_RGB) { 3093 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 3094 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 3095 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b); 3096 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 3097 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b); 3098 return (0); 3099 } 3100 3101 return (-1); 3102 } 3103 3104 static void 3105 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 3106 { 3107 memcpy(gc, &grid_default_cell, sizeof *gc); 3108 gc->fg = wp->palette.fg; 3109 gc->bg = wp->palette.bg; 3110 } 3111 3112 void 3113 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 3114 { 3115 struct options *oo = wp->options; 3116 struct format_tree *ft; 3117 3118 memcpy(gc, &grid_default_cell, sizeof *gc); 3119 3120 if (wp->flags & PANE_STYLECHANGED) { 3121 log_debug("%%%u: style changed", wp->id); 3122 wp->flags &= ~PANE_STYLECHANGED; 3123 3124 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 3125 FORMAT_NOJOBS); 3126 format_defaults(ft, NULL, NULL, NULL, wp); 3127 tty_window_default_style(&wp->cached_active_gc, wp); 3128 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 3129 tty_window_default_style(&wp->cached_gc, wp); 3130 style_add(&wp->cached_gc, oo, "window-style", ft); 3131 format_free(ft); 3132 } 3133 3134 if (gc->fg == 8) { 3135 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 3136 gc->fg = wp->cached_active_gc.fg; 3137 else 3138 gc->fg = wp->cached_gc.fg; 3139 } 3140 3141 if (gc->bg == 8) { 3142 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 3143 gc->bg = wp->cached_active_gc.bg; 3144 else 3145 gc->bg = wp->cached_gc.bg; 3146 } 3147 } 3148 3149 static void 3150 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 3151 struct colour_palette *palette, u_int bg, struct hyperlinks *hl) 3152 { 3153 struct grid_cell gc; 3154 3155 memcpy(&gc, &grid_default_cell, sizeof gc); 3156 gc.bg = bg; 3157 tty_attributes(tty, &gc, defaults, palette, hl); 3158 } 3159 3160 static void 3161 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data) 3162 { 3163 struct tty *tty = data; 3164 struct client *c = tty->client; 3165 3166 c->flags &= ~CLIENT_CLIPBOARDBUFFER; 3167 free(c->clipboard_panes); 3168 c->clipboard_panes = NULL; 3169 c->clipboard_npanes = 0; 3170 3171 tty->flags &= ~TTY_OSC52QUERY; 3172 } 3173 3174 void 3175 tty_clipboard_query(struct tty *tty) 3176 { 3177 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 3178 3179 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY)) 3180 return; 3181 tty_putcode_ss(tty, TTYC_MS, "", "?"); 3182 3183 tty->flags |= TTY_OSC52QUERY; 3184 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty); 3185 evtimer_add(&tty->clipboard_timer, &tv); 3186 } 3187