1 /* $OpenBSD: tty.c,v 1.430 2023/04/25 09:31:50 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 tty_invalidate(tty); 487 } 488 489 void 490 tty_raw(struct tty *tty, const char *s) 491 { 492 struct client *c = tty->client; 493 ssize_t n, slen; 494 u_int i; 495 496 slen = strlen(s); 497 for (i = 0; i < 5; i++) { 498 n = write(c->fd, s, slen); 499 if (n >= 0) { 500 s += n; 501 slen -= n; 502 if (slen == 0) 503 break; 504 } else if (n == -1 && errno != EAGAIN) 505 break; 506 usleep(100); 507 } 508 } 509 510 void 511 tty_putcode(struct tty *tty, enum tty_code_code code) 512 { 513 tty_puts(tty, tty_term_string(tty->term, code)); 514 } 515 516 void 517 tty_putcode_i(struct tty *tty, enum tty_code_code code, int a) 518 { 519 if (a < 0) 520 return; 521 tty_puts(tty, tty_term_string_i(tty->term, code, a)); 522 } 523 524 void 525 tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b) 526 { 527 if (a < 0 || b < 0) 528 return; 529 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b)); 530 } 531 532 void 533 tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c) 534 { 535 if (a < 0 || b < 0 || c < 0) 536 return; 537 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c)); 538 } 539 540 void 541 tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a) 542 { 543 if (a != NULL) 544 tty_puts(tty, tty_term_string_s(tty->term, code, a)); 545 } 546 547 void 548 tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a, 549 const char *b) 550 { 551 if (a != NULL && b != NULL) 552 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b)); 553 } 554 555 static void 556 tty_add(struct tty *tty, const char *buf, size_t len) 557 { 558 struct client *c = tty->client; 559 560 if (tty->flags & TTY_BLOCK) { 561 tty->discarded += len; 562 return; 563 } 564 565 evbuffer_add(tty->out, buf, len); 566 log_debug("%s: %.*s", c->name, (int)len, buf); 567 c->written += len; 568 569 if (tty_log_fd != -1) 570 write(tty_log_fd, buf, len); 571 if (tty->flags & TTY_STARTED) 572 event_add(&tty->event_out, NULL); 573 } 574 575 void 576 tty_puts(struct tty *tty, const char *s) 577 { 578 if (*s != '\0') 579 tty_add(tty, s, strlen(s)); 580 } 581 582 void 583 tty_putc(struct tty *tty, u_char ch) 584 { 585 const char *acs; 586 587 if ((tty->term->flags & TERM_NOAM) && 588 ch >= 0x20 && ch != 0x7f && 589 tty->cy == tty->sy - 1 && 590 tty->cx + 1 >= tty->sx) 591 return; 592 593 if (tty->cell.attr & GRID_ATTR_CHARSET) { 594 acs = tty_acs_get(tty, ch); 595 if (acs != NULL) 596 tty_add(tty, acs, strlen(acs)); 597 else 598 tty_add(tty, &ch, 1); 599 } else 600 tty_add(tty, &ch, 1); 601 602 if (ch >= 0x20 && ch != 0x7f) { 603 if (tty->cx >= tty->sx) { 604 tty->cx = 1; 605 if (tty->cy != tty->rlower) 606 tty->cy++; 607 608 /* 609 * On !am terminals, force the cursor position to where 610 * we think it should be after a line wrap - this means 611 * it works on sensible terminals as well. 612 */ 613 if (tty->term->flags & TERM_NOAM) 614 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx); 615 } else 616 tty->cx++; 617 } 618 } 619 620 void 621 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 622 { 623 if ((tty->term->flags & TERM_NOAM) && 624 tty->cy == tty->sy - 1 && 625 tty->cx + len >= tty->sx) 626 len = tty->sx - tty->cx - 1; 627 628 tty_add(tty, buf, len); 629 if (tty->cx + width > tty->sx) { 630 tty->cx = (tty->cx + width) - tty->sx; 631 if (tty->cx <= tty->sx) 632 tty->cy++; 633 else 634 tty->cx = tty->cy = UINT_MAX; 635 } else 636 tty->cx += width; 637 } 638 639 static void 640 tty_set_italics(struct tty *tty) 641 { 642 const char *s; 643 644 if (tty_term_has(tty->term, TTYC_SITM)) { 645 s = options_get_string(global_options, "default-terminal"); 646 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 647 tty_putcode(tty, TTYC_SITM); 648 return; 649 } 650 } 651 tty_putcode(tty, TTYC_SMSO); 652 } 653 654 void 655 tty_set_title(struct tty *tty, const char *title) 656 { 657 if (!tty_term_has(tty->term, TTYC_TSL) || 658 !tty_term_has(tty->term, TTYC_FSL)) 659 return; 660 661 tty_putcode(tty, TTYC_TSL); 662 tty_puts(tty, title); 663 tty_putcode(tty, TTYC_FSL); 664 } 665 666 void 667 tty_set_path(struct tty *tty, const char *title) 668 { 669 if (!tty_term_has(tty->term, TTYC_SWD) || 670 !tty_term_has(tty->term, TTYC_FSL)) 671 return; 672 673 tty_putcode(tty, TTYC_SWD); 674 tty_puts(tty, title); 675 tty_putcode(tty, TTYC_FSL); 676 } 677 678 static void 679 tty_force_cursor_colour(struct tty *tty, int c) 680 { 681 u_char r, g, b; 682 char s[13]; 683 684 if (c != -1) 685 c = colour_force_rgb(c); 686 if (c == tty->ccolour) 687 return; 688 if (c == -1) 689 tty_putcode(tty, TTYC_CR); 690 else { 691 colour_split_rgb(c, &r, &g, &b); 692 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b); 693 tty_putcode_s(tty, TTYC_CS, s); 694 } 695 tty->ccolour = c; 696 } 697 698 static int 699 tty_update_cursor(struct tty *tty, int mode, struct screen *s) 700 { 701 enum screen_cursor_style cstyle; 702 int ccolour, changed, cmode = mode; 703 704 /* Set cursor colour if changed. */ 705 if (s != NULL) { 706 ccolour = s->ccolour; 707 if (s->ccolour == -1) 708 ccolour = s->default_ccolour; 709 tty_force_cursor_colour(tty, ccolour); 710 } 711 712 /* If cursor is off, set as invisible. */ 713 if (~cmode & MODE_CURSOR) { 714 if (tty->mode & MODE_CURSOR) 715 tty_putcode(tty, TTYC_CIVIS); 716 return (cmode); 717 } 718 719 /* Check if blinking or very visible flag changed or style changed. */ 720 if (s == NULL) 721 cstyle = tty->cstyle; 722 else { 723 cstyle = s->cstyle; 724 if (cstyle == SCREEN_CURSOR_DEFAULT) { 725 if (~cmode & MODE_CURSOR_BLINKING_SET) { 726 if (s->default_mode & MODE_CURSOR_BLINKING) 727 cmode |= MODE_CURSOR_BLINKING; 728 else 729 cmode &= ~MODE_CURSOR_BLINKING; 730 } 731 cstyle = s->default_cstyle; 732 } 733 } 734 735 /* If nothing changed, do nothing. */ 736 changed = cmode ^ tty->mode; 737 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 738 return (cmode); 739 740 /* 741 * Set cursor style. If an explicit style has been set with DECSCUSR, 742 * set it if supported, otherwise send cvvis for blinking styles. 743 * 744 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 745 * if either the blinking or very visible flags are set. 746 */ 747 tty_putcode(tty, TTYC_CNORM); 748 switch (cstyle) { 749 case SCREEN_CURSOR_DEFAULT: 750 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 751 if (tty_term_has(tty->term, TTYC_SE)) 752 tty_putcode(tty, TTYC_SE); 753 else 754 tty_putcode_i(tty, TTYC_SS, 0); 755 } 756 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 757 tty_putcode(tty, TTYC_CVVIS); 758 break; 759 case SCREEN_CURSOR_BLOCK: 760 if (tty_term_has(tty->term, TTYC_SS)) { 761 if (cmode & MODE_CURSOR_BLINKING) 762 tty_putcode_i(tty, TTYC_SS, 1); 763 else 764 tty_putcode_i(tty, TTYC_SS, 2); 765 } else if (cmode & MODE_CURSOR_BLINKING) 766 tty_putcode(tty, TTYC_CVVIS); 767 break; 768 case SCREEN_CURSOR_UNDERLINE: 769 if (tty_term_has(tty->term, TTYC_SS)) { 770 if (cmode & MODE_CURSOR_BLINKING) 771 tty_putcode_i(tty, TTYC_SS, 3); 772 else 773 tty_putcode_i(tty, TTYC_SS, 4); 774 } else if (cmode & MODE_CURSOR_BLINKING) 775 tty_putcode(tty, TTYC_CVVIS); 776 break; 777 case SCREEN_CURSOR_BAR: 778 if (tty_term_has(tty->term, TTYC_SS)) { 779 if (cmode & MODE_CURSOR_BLINKING) 780 tty_putcode_i(tty, TTYC_SS, 5); 781 else 782 tty_putcode_i(tty, TTYC_SS, 6); 783 } else if (cmode & MODE_CURSOR_BLINKING) 784 tty_putcode(tty, TTYC_CVVIS); 785 break; 786 } 787 tty->cstyle = cstyle; 788 return (cmode); 789 } 790 791 void 792 tty_update_mode(struct tty *tty, int mode, struct screen *s) 793 { 794 struct tty_term *term = tty->term; 795 struct client *c = tty->client; 796 int changed; 797 798 if (tty->flags & TTY_NOCURSOR) 799 mode &= ~MODE_CURSOR; 800 801 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING) 802 mode |= MODE_CURSOR_BLINKING; 803 else 804 mode &= ~MODE_CURSOR_BLINKING; 805 806 changed = mode ^ tty->mode; 807 if (log_get_level() != 0 && changed != 0) { 808 log_debug("%s: current mode %s", c->name, 809 screen_mode_to_string(tty->mode)); 810 log_debug("%s: setting mode %s", c->name, 811 screen_mode_to_string(mode)); 812 } 813 814 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) { 815 /* 816 * If the mouse modes have changed, clear then all and apply 817 * again. There are differences in how terminals track the 818 * various bits. 819 */ 820 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l"); 821 if (mode & ALL_MOUSE_MODES) 822 tty_puts(tty, "\033[?1006h"); 823 if (mode & MODE_MOUSE_ALL) 824 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h"); 825 else if (mode & MODE_MOUSE_BUTTON) 826 tty_puts(tty, "\033[?1000h\033[?1002h"); 827 else if (mode & MODE_MOUSE_STANDARD) 828 tty_puts(tty, "\033[?1000h"); 829 } 830 tty->mode = mode; 831 } 832 833 static void 834 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 835 enum tty_code_code code1, u_int n) 836 { 837 if (tty_term_has(tty->term, code)) 838 tty_putcode_i(tty, code, n); 839 else { 840 while (n-- > 0) 841 tty_putcode(tty, code1); 842 } 843 } 844 845 static void 846 tty_repeat_space(struct tty *tty, u_int n) 847 { 848 static char s[500]; 849 850 if (*s != ' ') 851 memset(s, ' ', sizeof s); 852 853 while (n > sizeof s) { 854 tty_putn(tty, s, sizeof s, sizeof s); 855 n -= sizeof s; 856 } 857 if (n != 0) 858 tty_putn(tty, s, n, n); 859 } 860 861 /* Is this window bigger than the terminal? */ 862 int 863 tty_window_bigger(struct tty *tty) 864 { 865 struct client *c = tty->client; 866 struct window *w = c->session->curw->window; 867 868 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 869 } 870 871 /* What offset should this window be drawn at? */ 872 int 873 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 874 { 875 *ox = tty->oox; 876 *oy = tty->ooy; 877 *sx = tty->osx; 878 *sy = tty->osy; 879 880 return (tty->oflag); 881 } 882 883 /* What offset should this window be drawn at? */ 884 static int 885 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 886 { 887 struct client *c = tty->client; 888 struct window *w = c->session->curw->window; 889 struct window_pane *wp = server_client_get_pane(c); 890 u_int cx, cy, lines; 891 892 lines = status_line_size(c); 893 894 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 895 *ox = 0; 896 *oy = 0; 897 *sx = w->sx; 898 *sy = w->sy; 899 900 c->pan_window = NULL; 901 return (0); 902 } 903 904 *sx = tty->sx; 905 *sy = tty->sy - lines; 906 907 if (c->pan_window == w) { 908 if (*sx >= w->sx) 909 c->pan_ox = 0; 910 else if (c->pan_ox + *sx > w->sx) 911 c->pan_ox = w->sx - *sx; 912 *ox = c->pan_ox; 913 if (*sy >= w->sy) 914 c->pan_oy = 0; 915 else if (c->pan_oy + *sy > w->sy) 916 c->pan_oy = w->sy - *sy; 917 *oy = c->pan_oy; 918 return (1); 919 } 920 921 if (~wp->screen->mode & MODE_CURSOR) { 922 *ox = 0; 923 *oy = 0; 924 } else { 925 cx = wp->xoff + wp->screen->cx; 926 cy = wp->yoff + wp->screen->cy; 927 928 if (cx < *sx) 929 *ox = 0; 930 else if (cx > w->sx - *sx) 931 *ox = w->sx - *sx; 932 else 933 *ox = cx - *sx / 2; 934 935 if (cy < *sy) 936 *oy = 0; 937 else if (cy > w->sy - *sy) 938 *oy = w->sy - *sy; 939 else 940 *oy = cy - *sy / 2; 941 } 942 943 c->pan_window = NULL; 944 return (1); 945 } 946 947 /* Update stored offsets for a window and redraw if necessary. */ 948 void 949 tty_update_window_offset(struct window *w) 950 { 951 struct client *c; 952 953 TAILQ_FOREACH(c, &clients, entry) { 954 if (c->session != NULL && 955 c->session->curw != NULL && 956 c->session->curw->window == w) 957 tty_update_client_offset(c); 958 } 959 } 960 961 /* Update stored offsets for a client and redraw if necessary. */ 962 void 963 tty_update_client_offset(struct client *c) 964 { 965 u_int ox, oy, sx, sy; 966 967 if (~c->flags & CLIENT_TERMINAL) 968 return; 969 970 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 971 if (ox == c->tty.oox && 972 oy == c->tty.ooy && 973 sx == c->tty.osx && 974 sy == c->tty.osy) 975 return; 976 977 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 978 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 979 ox, oy, sx, sy); 980 981 c->tty.oox = ox; 982 c->tty.ooy = oy; 983 c->tty.osx = sx; 984 c->tty.osy = sy; 985 986 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 987 } 988 989 /* 990 * Is the region large enough to be worth redrawing once later rather than 991 * probably several times now? Currently yes if it is more than 50% of the 992 * pane. 993 */ 994 static int 995 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 996 { 997 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 998 } 999 1000 /* 1001 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 1002 * emulated. 1003 */ 1004 static int 1005 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 1006 { 1007 if (tty_term_flag(tty->term, TTYC_BCE)) 1008 return (0); 1009 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 1010 return (1); 1011 return (0); 1012 } 1013 1014 /* 1015 * Redraw scroll region using data from screen (already updated). Used when 1016 * CSR not supported, or window is a pane that doesn't take up the full 1017 * width of the terminal. 1018 */ 1019 static void 1020 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 1021 { 1022 struct client *c = tty->client; 1023 u_int i; 1024 1025 /* 1026 * If region is large, schedule a redraw. In most cases this is likely 1027 * to be followed by some more scrolling. 1028 */ 1029 if (tty_large_region(tty, ctx)) { 1030 log_debug("%s: %s large redraw", __func__, c->name); 1031 ctx->redraw_cb(ctx); 1032 return; 1033 } 1034 1035 for (i = ctx->orupper; i <= ctx->orlower; i++) 1036 tty_draw_pane(tty, ctx, i); 1037 } 1038 1039 /* Is this position visible in the pane? */ 1040 static int 1041 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1042 u_int py, u_int nx, u_int ny) 1043 { 1044 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1045 1046 if (!ctx->bigger) 1047 return (1); 1048 1049 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1050 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1051 return (0); 1052 return (1); 1053 } 1054 1055 /* Clamp line position to visible part of pane. */ 1056 static int 1057 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1058 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1059 { 1060 u_int xoff = ctx->rxoff + px; 1061 1062 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1063 return (0); 1064 *ry = ctx->yoff + py - ctx->woy; 1065 1066 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1067 /* All visible. */ 1068 *i = 0; 1069 *x = ctx->xoff + px - ctx->wox; 1070 *rx = nx; 1071 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1072 /* Both left and right not visible. */ 1073 *i = ctx->wox; 1074 *x = 0; 1075 *rx = ctx->wsx; 1076 } else if (xoff < ctx->wox) { 1077 /* Left not visible. */ 1078 *i = ctx->wox - (ctx->xoff + px); 1079 *x = 0; 1080 *rx = nx - *i; 1081 } else { 1082 /* Right not visible. */ 1083 *i = 0; 1084 *x = (ctx->xoff + px) - ctx->wox; 1085 *rx = ctx->wsx - *x; 1086 } 1087 if (*rx > nx) 1088 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1089 1090 return (1); 1091 } 1092 1093 /* Clear a line. */ 1094 static void 1095 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1096 u_int px, u_int nx, u_int bg) 1097 { 1098 struct client *c = tty->client; 1099 struct overlay_ranges r; 1100 u_int i; 1101 1102 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1103 1104 /* Nothing to clear. */ 1105 if (nx == 0) 1106 return; 1107 1108 /* If genuine BCE is available, can try escape sequences. */ 1109 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1110 /* Off the end of the line, use EL if available. */ 1111 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1112 tty_cursor(tty, px, py); 1113 tty_putcode(tty, TTYC_EL); 1114 return; 1115 } 1116 1117 /* At the start of the line. Use EL1. */ 1118 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1119 tty_cursor(tty, px + nx - 1, py); 1120 tty_putcode(tty, TTYC_EL1); 1121 return; 1122 } 1123 1124 /* Section of line. Use ECH if possible. */ 1125 if (tty_term_has(tty->term, TTYC_ECH)) { 1126 tty_cursor(tty, px, py); 1127 tty_putcode_i(tty, TTYC_ECH, nx); 1128 return; 1129 } 1130 } 1131 1132 /* 1133 * Couldn't use an escape sequence, use spaces. Clear only the visible 1134 * bit if there is an overlay. 1135 */ 1136 tty_check_overlay_range(tty, px, py, nx, &r); 1137 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 1138 if (r.nx[i] == 0) 1139 continue; 1140 tty_cursor(tty, r.px[i], py); 1141 tty_repeat_space(tty, r.nx[i]); 1142 } 1143 } 1144 1145 /* Clear a line, adjusting to visible part of pane. */ 1146 static void 1147 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1148 u_int px, u_int nx, u_int bg) 1149 { 1150 struct client *c = tty->client; 1151 u_int i, x, rx, ry; 1152 1153 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1154 1155 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1156 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1157 } 1158 1159 /* Clamp area position to visible part of pane. */ 1160 static int 1161 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1162 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1163 u_int *ry) 1164 { 1165 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1166 1167 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1168 return (0); 1169 1170 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1171 /* All visible. */ 1172 *i = 0; 1173 *x = ctx->xoff + px - ctx->wox; 1174 *rx = nx; 1175 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1176 /* Both left and right not visible. */ 1177 *i = ctx->wox; 1178 *x = 0; 1179 *rx = ctx->wsx; 1180 } else if (xoff < ctx->wox) { 1181 /* Left not visible. */ 1182 *i = ctx->wox - (ctx->xoff + px); 1183 *x = 0; 1184 *rx = nx - *i; 1185 } else { 1186 /* Right not visible. */ 1187 *i = 0; 1188 *x = (ctx->xoff + px) - ctx->wox; 1189 *rx = ctx->wsx - *x; 1190 } 1191 if (*rx > nx) 1192 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1193 1194 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1195 /* All visible. */ 1196 *j = 0; 1197 *y = ctx->yoff + py - ctx->woy; 1198 *ry = ny; 1199 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1200 /* Both top and bottom not visible. */ 1201 *j = ctx->woy; 1202 *y = 0; 1203 *ry = ctx->wsy; 1204 } else if (yoff < ctx->woy) { 1205 /* Top not visible. */ 1206 *j = ctx->woy - (ctx->yoff + py); 1207 *y = 0; 1208 *ry = ny - *j; 1209 } else { 1210 /* Bottom not visible. */ 1211 *j = 0; 1212 *y = (ctx->yoff + py) - ctx->woy; 1213 *ry = ctx->wsy - *y; 1214 } 1215 if (*ry > ny) 1216 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1217 1218 return (1); 1219 } 1220 1221 /* Clear an area, adjusting to visible part of pane. */ 1222 static void 1223 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1224 u_int ny, u_int px, u_int nx, u_int bg) 1225 { 1226 struct client *c = tty->client; 1227 u_int yy; 1228 char tmp[64]; 1229 1230 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1231 1232 /* Nothing to clear. */ 1233 if (nx == 0 || ny == 0) 1234 return; 1235 1236 /* If genuine BCE is available, can try escape sequences. */ 1237 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1238 /* Use ED if clearing off the bottom of the terminal. */ 1239 if (px == 0 && 1240 px + nx >= tty->sx && 1241 py + ny >= tty->sy && 1242 tty_term_has(tty->term, TTYC_ED)) { 1243 tty_cursor(tty, 0, py); 1244 tty_putcode(tty, TTYC_ED); 1245 return; 1246 } 1247 1248 /* 1249 * On VT420 compatible terminals we can use DECFRA if the 1250 * background colour isn't default (because it doesn't work 1251 * after SGR 0). 1252 */ 1253 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1254 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1255 py + 1, px + 1, py + ny, px + nx); 1256 tty_puts(tty, tmp); 1257 return; 1258 } 1259 1260 /* Full lines can be scrolled away to clear them. */ 1261 if (px == 0 && 1262 px + nx >= tty->sx && 1263 ny > 2 && 1264 tty_term_has(tty->term, TTYC_CSR) && 1265 tty_term_has(tty->term, TTYC_INDN)) { 1266 tty_region(tty, py, py + ny - 1); 1267 tty_margin_off(tty); 1268 tty_putcode_i(tty, TTYC_INDN, ny); 1269 return; 1270 } 1271 1272 /* 1273 * If margins are supported, can just scroll the area off to 1274 * clear it. 1275 */ 1276 if (nx > 2 && 1277 ny > 2 && 1278 tty_term_has(tty->term, TTYC_CSR) && 1279 tty_use_margin(tty) && 1280 tty_term_has(tty->term, TTYC_INDN)) { 1281 tty_region(tty, py, py + ny - 1); 1282 tty_margin(tty, px, px + nx - 1); 1283 tty_putcode_i(tty, TTYC_INDN, ny); 1284 return; 1285 } 1286 } 1287 1288 /* Couldn't use an escape sequence, loop over the lines. */ 1289 for (yy = py; yy < py + ny; yy++) 1290 tty_clear_line(tty, defaults, yy, px, nx, bg); 1291 } 1292 1293 /* Clear an area in a pane. */ 1294 static void 1295 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1296 u_int ny, u_int px, u_int nx, u_int bg) 1297 { 1298 u_int i, j, x, y, rx, ry; 1299 1300 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1301 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1302 } 1303 1304 static void 1305 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1306 { 1307 struct screen *s = ctx->s; 1308 u_int nx = ctx->sx, i, x, rx, ry; 1309 1310 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1311 1312 if (!ctx->bigger) { 1313 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1314 &ctx->defaults, ctx->palette); 1315 return; 1316 } 1317 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1318 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1319 ctx->palette); 1320 } 1321 } 1322 1323 static const struct grid_cell * 1324 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1325 { 1326 static struct grid_cell new; 1327 int c; 1328 1329 /* Characters less than 0x7f are always fine, no matter what. */ 1330 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1331 return (gc); 1332 1333 /* UTF-8 terminal and a UTF-8 character - fine. */ 1334 if (tty->client->flags & CLIENT_UTF8) 1335 return (gc); 1336 memcpy(&new, gc, sizeof new); 1337 1338 /* See if this can be mapped to an ACS character. */ 1339 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1340 if (c != -1) { 1341 utf8_set(&new.data, c); 1342 new.attr |= GRID_ATTR_CHARSET; 1343 return (&new); 1344 } 1345 1346 /* Replace by the right number of underscores. */ 1347 new.data.size = gc->data.width; 1348 if (new.data.size > UTF8_SIZE) 1349 new.data.size = UTF8_SIZE; 1350 memset(new.data.data, '_', new.data.size); 1351 return (&new); 1352 } 1353 1354 /* 1355 * Check if a single character is obstructed by the overlay and return a 1356 * boolean. 1357 */ 1358 static int 1359 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1360 { 1361 struct overlay_ranges r; 1362 1363 /* 1364 * A unit width range will always return nx[2] == 0 from a check, even 1365 * with multiple overlays, so it's sufficient to check just the first 1366 * two entries. 1367 */ 1368 tty_check_overlay_range(tty, px, py, 1, &r); 1369 if (r.nx[0] + r.nx[1] == 0) 1370 return (0); 1371 return (1); 1372 } 1373 1374 /* Return parts of the input range which are visible. */ 1375 static void 1376 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx, 1377 struct overlay_ranges *r) 1378 { 1379 struct client *c = tty->client; 1380 1381 if (c->overlay_check == NULL) { 1382 r->px[0] = px; 1383 r->nx[0] = nx; 1384 r->px[1] = 0; 1385 r->nx[1] = 0; 1386 r->px[2] = 0; 1387 r->nx[2] = 0; 1388 return; 1389 } 1390 1391 c->overlay_check(c, c->overlay_data, px, py, nx, r); 1392 } 1393 1394 void 1395 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1396 u_int atx, u_int aty, const struct grid_cell *defaults, 1397 struct colour_palette *palette) 1398 { 1399 struct grid *gd = s->grid; 1400 struct grid_cell gc, last; 1401 const struct grid_cell *gcp; 1402 struct grid_line *gl; 1403 struct client *c = tty->client; 1404 struct overlay_ranges r; 1405 u_int i, j, ux, sx, width, hidden, eux, nxx; 1406 u_int cellsize; 1407 int flags, cleared = 0, wrapped = 0; 1408 char buf[512]; 1409 size_t len; 1410 1411 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1412 px, py, nx, atx, aty); 1413 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1414 defaults->bg); 1415 1416 /* 1417 * py is the line in the screen to draw. 1418 * px is the start x and nx is the width to draw. 1419 * atx,aty is the line on the terminal to draw it. 1420 */ 1421 1422 flags = (tty->flags & TTY_NOCURSOR); 1423 tty->flags |= TTY_NOCURSOR; 1424 tty_update_mode(tty, tty->mode, s); 1425 1426 tty_region_off(tty); 1427 tty_margin_off(tty); 1428 1429 /* 1430 * Clamp the width to cellsize - note this is not cellused, because 1431 * there may be empty background cells after it (from BCE). 1432 */ 1433 sx = screen_size_x(s); 1434 if (nx > sx) 1435 nx = sx; 1436 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1437 if (sx > cellsize) 1438 sx = cellsize; 1439 if (sx > tty->sx) 1440 sx = tty->sx; 1441 if (sx > nx) 1442 sx = nx; 1443 ux = 0; 1444 1445 if (py == 0) 1446 gl = NULL; 1447 else 1448 gl = grid_get_line(gd, gd->hsize + py - 1); 1449 if (gl == NULL || 1450 (~gl->flags & GRID_LINE_WRAPPED) || 1451 atx != 0 || 1452 tty->cx < tty->sx || 1453 nx < tty->sx) { 1454 if (nx < tty->sx && 1455 atx == 0 && 1456 px + sx != nx && 1457 tty_term_has(tty->term, TTYC_EL1) && 1458 !tty_fake_bce(tty, defaults, 8) && 1459 c->overlay_check == NULL) { 1460 tty_default_attributes(tty, defaults, palette, 8, 1461 s->hyperlinks); 1462 tty_cursor(tty, nx - 1, aty); 1463 tty_putcode(tty, TTYC_EL1); 1464 cleared = 1; 1465 } 1466 } else { 1467 log_debug("%s: wrapped line %u", __func__, aty); 1468 wrapped = 1; 1469 } 1470 1471 memcpy(&last, &grid_default_cell, sizeof last); 1472 len = 0; 1473 width = 0; 1474 1475 for (i = 0; i < sx; i++) { 1476 grid_view_get_cell(gd, px + i, py, &gc); 1477 gcp = tty_check_codeset(tty, &gc); 1478 if (len != 0 && 1479 (!tty_check_overlay(tty, atx + ux + width, aty) || 1480 (gcp->attr & GRID_ATTR_CHARSET) || 1481 gcp->flags != last.flags || 1482 gcp->attr != last.attr || 1483 gcp->fg != last.fg || 1484 gcp->bg != last.bg || 1485 gcp->us != last.us || 1486 gcp->link != last.link || 1487 ux + width + gcp->data.width > nx || 1488 (sizeof buf) - len < gcp->data.size)) { 1489 tty_attributes(tty, &last, defaults, palette, 1490 s->hyperlinks); 1491 if (last.flags & GRID_FLAG_CLEARED) { 1492 log_debug("%s: %zu cleared", __func__, len); 1493 tty_clear_line(tty, defaults, aty, atx + ux, 1494 width, last.bg); 1495 } else { 1496 if (!wrapped || atx != 0 || ux != 0) 1497 tty_cursor(tty, atx + ux, aty); 1498 tty_putn(tty, buf, len, width); 1499 } 1500 ux += width; 1501 1502 len = 0; 1503 width = 0; 1504 wrapped = 0; 1505 } 1506 1507 if (gcp->flags & GRID_FLAG_SELECTED) 1508 screen_select_cell(s, &last, gcp); 1509 else 1510 memcpy(&last, gcp, sizeof last); 1511 1512 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width, 1513 &r); 1514 hidden = 0; 1515 for (j = 0; j < OVERLAY_MAX_RANGES; j++) 1516 hidden += r.nx[j]; 1517 hidden = gcp->data.width - hidden; 1518 if (hidden != 0 && hidden == gcp->data.width) { 1519 if (~gcp->flags & GRID_FLAG_PADDING) 1520 ux += gcp->data.width; 1521 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1522 if (~gcp->flags & GRID_FLAG_PADDING) { 1523 tty_attributes(tty, &last, defaults, palette, 1524 s->hyperlinks); 1525 for (j = 0; j < OVERLAY_MAX_RANGES; j++) { 1526 if (r.nx[j] == 0) 1527 continue; 1528 /* Effective width drawn so far. */ 1529 eux = r.px[j] - atx; 1530 if (eux < nx) { 1531 tty_cursor(tty, r.px[j], aty); 1532 nxx = nx - eux; 1533 if (r.nx[j] > nxx) 1534 r.nx[j] = nxx; 1535 tty_repeat_space(tty, r.nx[j]); 1536 ux = eux + r.nx[j]; 1537 } 1538 } 1539 } 1540 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1541 tty_attributes(tty, &last, defaults, palette, 1542 s->hyperlinks); 1543 tty_cursor(tty, atx + ux, aty); 1544 for (j = 0; j < gcp->data.size; j++) 1545 tty_putc(tty, gcp->data.data[j]); 1546 ux += gcp->data.width; 1547 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1548 memcpy(buf + len, gcp->data.data, gcp->data.size); 1549 len += gcp->data.size; 1550 width += gcp->data.width; 1551 } 1552 } 1553 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1554 tty_attributes(tty, &last, defaults, palette, s->hyperlinks); 1555 if (last.flags & GRID_FLAG_CLEARED) { 1556 log_debug("%s: %zu cleared (end)", __func__, len); 1557 tty_clear_line(tty, defaults, aty, atx + ux, width, 1558 last.bg); 1559 } else { 1560 if (!wrapped || atx != 0 || ux != 0) 1561 tty_cursor(tty, atx + ux, aty); 1562 tty_putn(tty, buf, len, width); 1563 } 1564 ux += width; 1565 } 1566 1567 if (!cleared && ux < nx) { 1568 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1569 nx - ux, len); 1570 tty_default_attributes(tty, defaults, palette, 8, 1571 s->hyperlinks); 1572 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1573 } 1574 1575 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1576 tty_update_mode(tty, tty->mode, s); 1577 } 1578 1579 void 1580 tty_sync_start(struct tty *tty) 1581 { 1582 if (tty->flags & TTY_BLOCK) 1583 return; 1584 if (tty->flags & TTY_SYNCING) 1585 return; 1586 tty->flags |= TTY_SYNCING; 1587 1588 if (tty_term_has(tty->term, TTYC_SYNC)) { 1589 log_debug("%s sync start", tty->client->name); 1590 tty_putcode_i(tty, TTYC_SYNC, 1); 1591 } 1592 } 1593 1594 void 1595 tty_sync_end(struct tty *tty) 1596 { 1597 if (tty->flags & TTY_BLOCK) 1598 return; 1599 if (~tty->flags & TTY_SYNCING) 1600 return; 1601 tty->flags &= ~TTY_SYNCING; 1602 1603 if (tty_term_has(tty->term, TTYC_SYNC)) { 1604 log_debug("%s sync end", tty->client->name); 1605 tty_putcode_i(tty, TTYC_SYNC, 2); 1606 } 1607 } 1608 1609 static int 1610 tty_client_ready(const struct tty_ctx *ctx, struct client *c) 1611 { 1612 if (c->session == NULL || c->tty.term == NULL) 1613 return (0); 1614 if (c->flags & CLIENT_SUSPENDED) 1615 return (0); 1616 1617 /* 1618 * If invisible panes are allowed (used for passthrough), don't care if 1619 * redrawing or frozen. 1620 */ 1621 if (ctx->allow_invisible_panes) 1622 return (1); 1623 1624 if (c->flags & CLIENT_REDRAWWINDOW) 1625 return (0); 1626 if (c->tty.flags & TTY_FREEZE) 1627 return (0); 1628 return (1); 1629 } 1630 1631 void 1632 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1633 struct tty_ctx *ctx) 1634 { 1635 struct client *c; 1636 int state; 1637 1638 if (ctx->set_client_cb == NULL) 1639 return; 1640 TAILQ_FOREACH(c, &clients, entry) { 1641 if (tty_client_ready(ctx, c)) { 1642 state = ctx->set_client_cb(ctx, c); 1643 if (state == -1) 1644 break; 1645 if (state == 0) 1646 continue; 1647 cmdfn(&c->tty, ctx); 1648 } 1649 } 1650 } 1651 1652 void 1653 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1654 { 1655 struct client *c = tty->client; 1656 1657 if (ctx->bigger || 1658 !tty_full_width(tty, ctx) || 1659 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1660 (!tty_term_has(tty->term, TTYC_ICH) && 1661 !tty_term_has(tty->term, TTYC_ICH1)) || 1662 c->overlay_check != NULL) { 1663 tty_draw_pane(tty, ctx, ctx->ocy); 1664 return; 1665 } 1666 1667 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1668 ctx->s->hyperlinks); 1669 1670 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1671 1672 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1673 } 1674 1675 void 1676 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1677 { 1678 struct client *c = tty->client; 1679 1680 if (ctx->bigger || 1681 !tty_full_width(tty, ctx) || 1682 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1683 (!tty_term_has(tty->term, TTYC_DCH) && 1684 !tty_term_has(tty->term, TTYC_DCH1)) || 1685 c->overlay_check != NULL) { 1686 tty_draw_pane(tty, ctx, ctx->ocy); 1687 return; 1688 } 1689 1690 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1691 ctx->s->hyperlinks); 1692 1693 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1694 1695 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1696 } 1697 1698 void 1699 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1700 { 1701 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1702 ctx->s->hyperlinks); 1703 1704 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1705 } 1706 1707 void 1708 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1709 { 1710 struct client *c = tty->client; 1711 1712 if (ctx->bigger || 1713 !tty_full_width(tty, ctx) || 1714 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1715 !tty_term_has(tty->term, TTYC_CSR) || 1716 !tty_term_has(tty->term, TTYC_IL1) || 1717 ctx->sx == 1 || 1718 ctx->sy == 1 || 1719 c->overlay_check != NULL) { 1720 tty_redraw_region(tty, ctx); 1721 return; 1722 } 1723 1724 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1725 ctx->s->hyperlinks); 1726 1727 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1728 tty_margin_off(tty); 1729 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1730 1731 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1732 tty->cx = tty->cy = UINT_MAX; 1733 } 1734 1735 void 1736 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1737 { 1738 struct client *c = tty->client; 1739 1740 if (ctx->bigger || 1741 !tty_full_width(tty, ctx) || 1742 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1743 !tty_term_has(tty->term, TTYC_CSR) || 1744 !tty_term_has(tty->term, TTYC_DL1) || 1745 ctx->sx == 1 || 1746 ctx->sy == 1 || 1747 c->overlay_check != NULL) { 1748 tty_redraw_region(tty, ctx); 1749 return; 1750 } 1751 1752 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1753 ctx->s->hyperlinks); 1754 1755 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1756 tty_margin_off(tty); 1757 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1758 1759 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1760 tty->cx = tty->cy = UINT_MAX; 1761 } 1762 1763 void 1764 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1765 { 1766 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1767 ctx->s->hyperlinks); 1768 1769 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1770 } 1771 1772 void 1773 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1774 { 1775 u_int nx = ctx->sx - ctx->ocx; 1776 1777 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1778 ctx->s->hyperlinks); 1779 1780 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1781 } 1782 1783 void 1784 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1785 { 1786 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1787 ctx->s->hyperlinks); 1788 1789 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1790 } 1791 1792 void 1793 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1794 { 1795 struct client *c = tty->client; 1796 1797 if (ctx->ocy != ctx->orupper) 1798 return; 1799 1800 if (ctx->bigger || 1801 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1802 tty_fake_bce(tty, &ctx->defaults, 8) || 1803 !tty_term_has(tty->term, TTYC_CSR) || 1804 (!tty_term_has(tty->term, TTYC_RI) && 1805 !tty_term_has(tty->term, TTYC_RIN)) || 1806 ctx->sx == 1 || 1807 ctx->sy == 1 || 1808 c->overlay_check != NULL) { 1809 tty_redraw_region(tty, ctx); 1810 return; 1811 } 1812 1813 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1814 ctx->s->hyperlinks); 1815 1816 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1817 tty_margin_pane(tty, ctx); 1818 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1819 1820 if (tty_term_has(tty->term, TTYC_RI)) 1821 tty_putcode(tty, TTYC_RI); 1822 else 1823 tty_putcode_i(tty, TTYC_RIN, 1); 1824 } 1825 1826 void 1827 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1828 { 1829 struct client *c = tty->client; 1830 1831 if (ctx->ocy != ctx->orlower) 1832 return; 1833 1834 if (ctx->bigger || 1835 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1836 tty_fake_bce(tty, &ctx->defaults, 8) || 1837 !tty_term_has(tty->term, TTYC_CSR) || 1838 ctx->sx == 1 || 1839 ctx->sy == 1 || 1840 c->overlay_check != NULL) { 1841 tty_redraw_region(tty, ctx); 1842 return; 1843 } 1844 1845 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1846 ctx->s->hyperlinks); 1847 1848 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1849 tty_margin_pane(tty, ctx); 1850 1851 /* 1852 * If we want to wrap a pane while using margins, the cursor needs to 1853 * be exactly on the right of the region. If the cursor is entirely off 1854 * the edge - move it back to the right. Some terminals are funny about 1855 * this and insert extra spaces, so only use the right if margins are 1856 * enabled. 1857 */ 1858 if (ctx->xoff + ctx->ocx > tty->rright) { 1859 if (!tty_use_margin(tty)) 1860 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1861 else 1862 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1863 } else 1864 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1865 1866 tty_putc(tty, '\n'); 1867 } 1868 1869 void 1870 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1871 { 1872 struct client *c = tty->client; 1873 u_int i; 1874 1875 if (ctx->bigger || 1876 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1877 tty_fake_bce(tty, &ctx->defaults, 8) || 1878 !tty_term_has(tty->term, TTYC_CSR) || 1879 ctx->sx == 1 || 1880 ctx->sy == 1 || 1881 c->overlay_check != NULL) { 1882 tty_redraw_region(tty, ctx); 1883 return; 1884 } 1885 1886 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1887 ctx->s->hyperlinks); 1888 1889 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1890 tty_margin_pane(tty, ctx); 1891 1892 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1893 if (!tty_use_margin(tty)) 1894 tty_cursor(tty, 0, tty->rlower); 1895 else 1896 tty_cursor(tty, tty->rright, tty->rlower); 1897 for (i = 0; i < ctx->num; i++) 1898 tty_putc(tty, '\n'); 1899 } else { 1900 if (tty->cy == UINT_MAX) 1901 tty_cursor(tty, 0, 0); 1902 else 1903 tty_cursor(tty, 0, tty->cy); 1904 tty_putcode_i(tty, TTYC_INDN, ctx->num); 1905 } 1906 } 1907 1908 void 1909 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1910 { 1911 u_int i; 1912 struct client *c = tty->client; 1913 1914 if (ctx->bigger || 1915 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1916 tty_fake_bce(tty, &ctx->defaults, 8) || 1917 !tty_term_has(tty->term, TTYC_CSR) || 1918 (!tty_term_has(tty->term, TTYC_RI) && 1919 !tty_term_has(tty->term, TTYC_RIN)) || 1920 ctx->sx == 1 || 1921 ctx->sy == 1 || 1922 c->overlay_check != NULL) { 1923 tty_redraw_region(tty, ctx); 1924 return; 1925 } 1926 1927 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1928 ctx->s->hyperlinks); 1929 1930 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1931 tty_margin_pane(tty, ctx); 1932 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1933 1934 if (tty_term_has(tty->term, TTYC_RIN)) 1935 tty_putcode_i(tty, TTYC_RIN, ctx->num); 1936 else { 1937 for (i = 0; i < ctx->num; i++) 1938 tty_putcode(tty, TTYC_RI); 1939 } 1940 } 1941 1942 void 1943 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1944 { 1945 u_int px, py, nx, ny; 1946 1947 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1948 ctx->s->hyperlinks); 1949 1950 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1951 tty_margin_off(tty); 1952 1953 px = 0; 1954 nx = ctx->sx; 1955 py = ctx->ocy + 1; 1956 ny = ctx->sy - ctx->ocy - 1; 1957 1958 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1959 1960 px = ctx->ocx; 1961 nx = ctx->sx - ctx->ocx; 1962 py = ctx->ocy; 1963 1964 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1965 } 1966 1967 void 1968 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1969 { 1970 u_int px, py, nx, ny; 1971 1972 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1973 ctx->s->hyperlinks); 1974 1975 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1976 tty_margin_off(tty); 1977 1978 px = 0; 1979 nx = ctx->sx; 1980 py = 0; 1981 ny = ctx->ocy; 1982 1983 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1984 1985 px = 0; 1986 nx = ctx->ocx + 1; 1987 py = ctx->ocy; 1988 1989 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1990 } 1991 1992 void 1993 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1994 { 1995 u_int px, py, nx, ny; 1996 1997 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1998 ctx->s->hyperlinks); 1999 2000 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2001 tty_margin_off(tty); 2002 2003 px = 0; 2004 nx = ctx->sx; 2005 py = 0; 2006 ny = ctx->sy; 2007 2008 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2009 } 2010 2011 void 2012 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 2013 { 2014 u_int i, j; 2015 2016 if (ctx->bigger) { 2017 ctx->redraw_cb(ctx); 2018 return; 2019 } 2020 2021 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette, 2022 ctx->s->hyperlinks); 2023 2024 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2025 tty_margin_off(tty); 2026 2027 for (j = 0; j < ctx->sy; j++) { 2028 tty_cursor_pane(tty, ctx, 0, j); 2029 for (i = 0; i < ctx->sx; i++) 2030 tty_putc(tty, 'E'); 2031 } 2032 } 2033 2034 void 2035 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 2036 { 2037 const struct grid_cell *gcp = ctx->cell; 2038 struct screen *s = ctx->s; 2039 struct overlay_ranges r; 2040 u_int px, py, i, vis = 0; 2041 2042 px = ctx->xoff + ctx->ocx - ctx->wox; 2043 py = ctx->yoff + ctx->ocy - ctx->woy; 2044 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 2045 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 2046 return; 2047 2048 /* Handle partially obstructed wide characters. */ 2049 if (gcp->data.width > 1) { 2050 tty_check_overlay_range(tty, px, py, gcp->data.width, &r); 2051 for (i = 0; i < OVERLAY_MAX_RANGES; i++) 2052 vis += r.nx[i]; 2053 if (vis < gcp->data.width) { 2054 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width, 2055 px, py, &ctx->defaults, ctx->palette); 2056 return; 2057 } 2058 } 2059 2060 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 2061 ctx->ocy == ctx->orlower && 2062 tty_full_width(tty, ctx)) 2063 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2064 2065 tty_margin_off(tty); 2066 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2067 2068 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette, 2069 ctx->s->hyperlinks); 2070 } 2071 2072 void 2073 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 2074 { 2075 struct overlay_ranges r; 2076 u_int i, px, py, cx; 2077 char *cp = ctx->ptr; 2078 2079 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 2080 return; 2081 2082 if (ctx->bigger && 2083 (ctx->xoff + ctx->ocx < ctx->wox || 2084 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 2085 if (!ctx->wrapped || 2086 !tty_full_width(tty, ctx) || 2087 (tty->term->flags & TERM_NOAM) || 2088 ctx->xoff + ctx->ocx != 0 || 2089 ctx->yoff + ctx->ocy != tty->cy + 1 || 2090 tty->cx < tty->sx || 2091 tty->cy == tty->rlower) 2092 tty_draw_pane(tty, ctx, ctx->ocy); 2093 else 2094 ctx->redraw_cb(ctx); 2095 return; 2096 } 2097 2098 tty_margin_off(tty); 2099 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2100 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks); 2101 2102 /* Get tty position from pane position for overlay check. */ 2103 px = ctx->xoff + ctx->ocx - ctx->wox; 2104 py = ctx->yoff + ctx->ocy - ctx->woy; 2105 2106 tty_check_overlay_range(tty, px, py, ctx->num, &r); 2107 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 2108 if (r.nx[i] == 0) 2109 continue; 2110 /* Convert back to pane position for printing. */ 2111 cx = r.px[i] - ctx->xoff + ctx->wox; 2112 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy); 2113 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]); 2114 } 2115 } 2116 2117 void 2118 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2119 { 2120 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num); 2121 } 2122 2123 void 2124 tty_set_selection(struct tty *tty, const char *flags, const char *buf, 2125 size_t len) 2126 { 2127 char *encoded; 2128 size_t size; 2129 2130 if (~tty->flags & TTY_STARTED) 2131 return; 2132 if (!tty_term_has(tty->term, TTYC_MS)) 2133 return; 2134 2135 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2136 encoded = xmalloc(size); 2137 2138 b64_ntop(buf, len, encoded, size); 2139 tty->flags |= TTY_NOBLOCK; 2140 tty_putcode_ss(tty, TTYC_MS, flags, encoded); 2141 2142 free(encoded); 2143 } 2144 2145 void 2146 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2147 { 2148 tty->flags |= TTY_NOBLOCK; 2149 tty_add(tty, ctx->ptr, ctx->num); 2150 tty_invalidate(tty); 2151 } 2152 2153 void 2154 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2155 { 2156 if (ctx->num == 0x11) { 2157 /* 2158 * This is an overlay and a command that moves the cursor so 2159 * start synchronized updates. 2160 */ 2161 tty_sync_start(tty); 2162 } else if (~ctx->num & 0x10) { 2163 /* 2164 * This is a pane. If there is an overlay, always start; 2165 * otherwise, only if requested. 2166 */ 2167 if (ctx->num || tty->client->overlay_draw != NULL) 2168 tty_sync_start(tty); 2169 } 2170 } 2171 2172 void 2173 tty_cell(struct tty *tty, const struct grid_cell *gc, 2174 const struct grid_cell *defaults, struct colour_palette *palette, 2175 struct hyperlinks *hl) 2176 { 2177 const struct grid_cell *gcp; 2178 2179 /* Skip last character if terminal is stupid. */ 2180 if ((tty->term->flags & TERM_NOAM) && 2181 tty->cy == tty->sy - 1 && 2182 tty->cx == tty->sx - 1) 2183 return; 2184 2185 /* If this is a padding character, do nothing. */ 2186 if (gc->flags & GRID_FLAG_PADDING) 2187 return; 2188 2189 /* Check the output codeset and apply attributes. */ 2190 gcp = tty_check_codeset(tty, gc); 2191 tty_attributes(tty, gcp, defaults, palette, hl); 2192 2193 /* If it is a single character, write with putc to handle ACS. */ 2194 if (gcp->data.size == 1) { 2195 tty_attributes(tty, gcp, defaults, palette, hl); 2196 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2197 return; 2198 tty_putc(tty, *gcp->data.data); 2199 return; 2200 } 2201 2202 /* Write the data. */ 2203 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2204 } 2205 2206 void 2207 tty_reset(struct tty *tty) 2208 { 2209 struct grid_cell *gc = &tty->cell; 2210 2211 if (!grid_cells_equal(gc, &grid_default_cell)) { 2212 if (gc->link != 0) 2213 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2214 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2215 tty_putcode(tty, TTYC_RMACS); 2216 tty_putcode(tty, TTYC_SGR0); 2217 memcpy(gc, &grid_default_cell, sizeof *gc); 2218 } 2219 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2220 } 2221 2222 static void 2223 tty_invalidate(struct tty *tty) 2224 { 2225 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2226 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2227 2228 tty->cx = tty->cy = UINT_MAX; 2229 tty->rupper = tty->rleft = UINT_MAX; 2230 tty->rlower = tty->rright = UINT_MAX; 2231 2232 if (tty->flags & TTY_STARTED) { 2233 if (tty_use_margin(tty)) 2234 tty_putcode(tty, TTYC_ENMG); 2235 tty_putcode(tty, TTYC_SGR0); 2236 2237 tty->mode = ALL_MODES; 2238 tty_update_mode(tty, MODE_CURSOR, NULL); 2239 2240 tty_cursor(tty, 0, 0); 2241 tty_region_off(tty); 2242 tty_margin_off(tty); 2243 } else 2244 tty->mode = MODE_CURSOR; 2245 } 2246 2247 /* Turn off margin. */ 2248 void 2249 tty_region_off(struct tty *tty) 2250 { 2251 tty_region(tty, 0, tty->sy - 1); 2252 } 2253 2254 /* Set region inside pane. */ 2255 static void 2256 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2257 u_int rlower) 2258 { 2259 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2260 ctx->yoff + rlower - ctx->woy); 2261 } 2262 2263 /* Set region at absolute position. */ 2264 static void 2265 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2266 { 2267 if (tty->rlower == rlower && tty->rupper == rupper) 2268 return; 2269 if (!tty_term_has(tty->term, TTYC_CSR)) 2270 return; 2271 2272 tty->rupper = rupper; 2273 tty->rlower = rlower; 2274 2275 /* 2276 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2277 * 0,0 if it is beyond the last column (they do not reset their wrap 2278 * flag so further output causes a line feed). As a workaround, do an 2279 * explicit move to 0 first. 2280 */ 2281 if (tty->cx >= tty->sx) { 2282 if (tty->cy == UINT_MAX) 2283 tty_cursor(tty, 0, 0); 2284 else 2285 tty_cursor(tty, 0, tty->cy); 2286 } 2287 2288 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2289 tty->cx = tty->cy = UINT_MAX; 2290 } 2291 2292 /* Turn off margin. */ 2293 void 2294 tty_margin_off(struct tty *tty) 2295 { 2296 tty_margin(tty, 0, tty->sx - 1); 2297 } 2298 2299 /* Set margin inside pane. */ 2300 static void 2301 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2302 { 2303 tty_margin(tty, ctx->xoff - ctx->wox, 2304 ctx->xoff + ctx->sx - 1 - ctx->wox); 2305 } 2306 2307 /* Set margin at absolute position. */ 2308 static void 2309 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2310 { 2311 if (!tty_use_margin(tty)) 2312 return; 2313 if (tty->rleft == rleft && tty->rright == rright) 2314 return; 2315 2316 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower); 2317 2318 tty->rleft = rleft; 2319 tty->rright = rright; 2320 2321 if (rleft == 0 && rright == tty->sx - 1) 2322 tty_putcode(tty, TTYC_CLMG); 2323 else 2324 tty_putcode_ii(tty, TTYC_CMG, rleft, rright); 2325 tty->cx = tty->cy = UINT_MAX; 2326 } 2327 2328 /* 2329 * Move the cursor, unless it would wrap itself when the next character is 2330 * printed. 2331 */ 2332 static void 2333 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2334 u_int cx, u_int cy) 2335 { 2336 if (!ctx->wrapped || 2337 !tty_full_width(tty, ctx) || 2338 (tty->term->flags & TERM_NOAM) || 2339 ctx->xoff + cx != 0 || 2340 ctx->yoff + cy != tty->cy + 1 || 2341 tty->cx < tty->sx || 2342 tty->cy == tty->rlower) 2343 tty_cursor_pane(tty, ctx, cx, cy); 2344 else 2345 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2346 } 2347 2348 /* Move cursor inside pane. */ 2349 static void 2350 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2351 { 2352 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2353 } 2354 2355 /* Move cursor to absolute position. */ 2356 void 2357 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2358 { 2359 struct tty_term *term = tty->term; 2360 u_int thisx, thisy; 2361 int change; 2362 2363 if (tty->flags & TTY_BLOCK) 2364 return; 2365 2366 thisx = tty->cx; 2367 thisy = tty->cy; 2368 2369 /* 2370 * If in the automargin space, and want to be there, do not move. 2371 * Otherwise, force the cursor to be in range (and complain). 2372 */ 2373 if (cx == thisx && cy == thisy && cx == tty->sx) 2374 return; 2375 if (cx > tty->sx - 1) { 2376 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1); 2377 cx = tty->sx - 1; 2378 } 2379 2380 /* No change. */ 2381 if (cx == thisx && cy == thisy) 2382 return; 2383 2384 /* Currently at the very end of the line - use absolute movement. */ 2385 if (thisx > tty->sx - 1) 2386 goto absolute; 2387 2388 /* Move to home position (0, 0). */ 2389 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2390 tty_putcode(tty, TTYC_HOME); 2391 goto out; 2392 } 2393 2394 /* Zero on the next line. */ 2395 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2396 (!tty_use_margin(tty) || tty->rleft == 0)) { 2397 tty_putc(tty, '\r'); 2398 tty_putc(tty, '\n'); 2399 goto out; 2400 } 2401 2402 /* Moving column or row. */ 2403 if (cy == thisy) { 2404 /* 2405 * Moving column only, row staying the same. 2406 */ 2407 2408 /* To left edge. */ 2409 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2410 tty_putc(tty, '\r'); 2411 goto out; 2412 } 2413 2414 /* One to the left. */ 2415 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2416 tty_putcode(tty, TTYC_CUB1); 2417 goto out; 2418 } 2419 2420 /* One to the right. */ 2421 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2422 tty_putcode(tty, TTYC_CUF1); 2423 goto out; 2424 } 2425 2426 /* Calculate difference. */ 2427 change = thisx - cx; /* +ve left, -ve right */ 2428 2429 /* 2430 * Use HPA if change is larger than absolute, otherwise move 2431 * the cursor with CUB/CUF. 2432 */ 2433 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2434 tty_putcode_i(tty, TTYC_HPA, cx); 2435 goto out; 2436 } else if (change > 0 && 2437 tty_term_has(term, TTYC_CUB) && 2438 !tty_use_margin(tty)) { 2439 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2440 tty_putcode(tty, TTYC_CUB1); 2441 tty_putcode(tty, TTYC_CUB1); 2442 goto out; 2443 } 2444 tty_putcode_i(tty, TTYC_CUB, change); 2445 goto out; 2446 } else if (change < 0 && 2447 tty_term_has(term, TTYC_CUF) && 2448 !tty_use_margin(tty)) { 2449 tty_putcode_i(tty, TTYC_CUF, -change); 2450 goto out; 2451 } 2452 } else if (cx == thisx) { 2453 /* 2454 * Moving row only, column staying the same. 2455 */ 2456 2457 /* One above. */ 2458 if (thisy != tty->rupper && 2459 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2460 tty_putcode(tty, TTYC_CUU1); 2461 goto out; 2462 } 2463 2464 /* One below. */ 2465 if (thisy != tty->rlower && 2466 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2467 tty_putcode(tty, TTYC_CUD1); 2468 goto out; 2469 } 2470 2471 /* Calculate difference. */ 2472 change = thisy - cy; /* +ve up, -ve down */ 2473 2474 /* 2475 * Try to use VPA if change is larger than absolute or if this 2476 * change would cross the scroll region, otherwise use CUU/CUD. 2477 */ 2478 if ((u_int) abs(change) > cy || 2479 (change < 0 && cy - change > tty->rlower) || 2480 (change > 0 && cy - change < tty->rupper)) { 2481 if (tty_term_has(term, TTYC_VPA)) { 2482 tty_putcode_i(tty, TTYC_VPA, cy); 2483 goto out; 2484 } 2485 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2486 tty_putcode_i(tty, TTYC_CUU, change); 2487 goto out; 2488 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2489 tty_putcode_i(tty, TTYC_CUD, -change); 2490 goto out; 2491 } 2492 } 2493 2494 absolute: 2495 /* Absolute movement. */ 2496 tty_putcode_ii(tty, TTYC_CUP, cy, cx); 2497 2498 out: 2499 tty->cx = cx; 2500 tty->cy = cy; 2501 } 2502 2503 static void 2504 tty_hyperlink(struct tty *tty, const struct grid_cell *gc, 2505 struct hyperlinks *hl) 2506 { 2507 const char *uri, *id; 2508 2509 if (gc->link == tty->cell.link) 2510 return; 2511 tty->cell.link = gc->link; 2512 2513 if (hl == NULL) 2514 return; 2515 2516 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id)) 2517 tty_putcode_ss(tty, TTYC_HLS, "", ""); 2518 else 2519 tty_putcode_ss(tty, TTYC_HLS, id, uri); 2520 } 2521 2522 void 2523 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2524 const struct grid_cell *defaults, struct colour_palette *palette, 2525 struct hyperlinks *hl) 2526 { 2527 struct grid_cell *tc = &tty->cell, gc2; 2528 int changed; 2529 2530 /* Copy cell and update default colours. */ 2531 memcpy(&gc2, gc, sizeof gc2); 2532 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2533 if (gc2.fg == 8) 2534 gc2.fg = defaults->fg; 2535 if (gc2.bg == 8) 2536 gc2.bg = defaults->bg; 2537 } 2538 2539 /* Ignore cell if it is the same as the last one. */ 2540 if (gc2.attr == tty->last_cell.attr && 2541 gc2.fg == tty->last_cell.fg && 2542 gc2.bg == tty->last_cell.bg && 2543 gc2.us == tty->last_cell.us && 2544 gc2.link == tty->last_cell.link) 2545 return; 2546 2547 /* 2548 * If no setab, try to use the reverse attribute as a best-effort for a 2549 * non-default background. This is a bit of a hack but it doesn't do 2550 * any serious harm and makes a couple of applications happier. 2551 */ 2552 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2553 if (gc2.attr & GRID_ATTR_REVERSE) { 2554 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2555 gc2.attr &= ~GRID_ATTR_REVERSE; 2556 } else { 2557 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2558 gc2.attr |= GRID_ATTR_REVERSE; 2559 } 2560 } 2561 2562 /* Fix up the colours if necessary. */ 2563 tty_check_fg(tty, palette, &gc2); 2564 tty_check_bg(tty, palette, &gc2); 2565 tty_check_us(tty, palette, &gc2); 2566 2567 /* 2568 * If any bits are being cleared or the underline colour is now default, 2569 * reset everything. 2570 */ 2571 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2572 tty_reset(tty); 2573 2574 /* 2575 * Set the colours. This may call tty_reset() (so it comes next) and 2576 * may add to (NOT remove) the desired attributes. 2577 */ 2578 tty_colours(tty, &gc2); 2579 2580 /* Filter out attribute bits already set. */ 2581 changed = gc2.attr & ~tc->attr; 2582 tc->attr = gc2.attr; 2583 2584 /* Set the attributes. */ 2585 if (changed & GRID_ATTR_BRIGHT) 2586 tty_putcode(tty, TTYC_BOLD); 2587 if (changed & GRID_ATTR_DIM) 2588 tty_putcode(tty, TTYC_DIM); 2589 if (changed & GRID_ATTR_ITALICS) 2590 tty_set_italics(tty); 2591 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2592 if ((changed & GRID_ATTR_UNDERSCORE) || 2593 !tty_term_has(tty->term, TTYC_SMULX)) 2594 tty_putcode(tty, TTYC_SMUL); 2595 else if (changed & GRID_ATTR_UNDERSCORE_2) 2596 tty_putcode_i(tty, TTYC_SMULX, 2); 2597 else if (changed & GRID_ATTR_UNDERSCORE_3) 2598 tty_putcode_i(tty, TTYC_SMULX, 3); 2599 else if (changed & GRID_ATTR_UNDERSCORE_4) 2600 tty_putcode_i(tty, TTYC_SMULX, 4); 2601 else if (changed & GRID_ATTR_UNDERSCORE_5) 2602 tty_putcode_i(tty, TTYC_SMULX, 5); 2603 } 2604 if (changed & GRID_ATTR_BLINK) 2605 tty_putcode(tty, TTYC_BLINK); 2606 if (changed & GRID_ATTR_REVERSE) { 2607 if (tty_term_has(tty->term, TTYC_REV)) 2608 tty_putcode(tty, TTYC_REV); 2609 else if (tty_term_has(tty->term, TTYC_SMSO)) 2610 tty_putcode(tty, TTYC_SMSO); 2611 } 2612 if (changed & GRID_ATTR_HIDDEN) 2613 tty_putcode(tty, TTYC_INVIS); 2614 if (changed & GRID_ATTR_STRIKETHROUGH) 2615 tty_putcode(tty, TTYC_SMXX); 2616 if (changed & GRID_ATTR_OVERLINE) 2617 tty_putcode(tty, TTYC_SMOL); 2618 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2619 tty_putcode(tty, TTYC_SMACS); 2620 2621 /* Set hyperlink if any. */ 2622 tty_hyperlink(tty, gc, hl); 2623 2624 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2625 } 2626 2627 static void 2628 tty_colours(struct tty *tty, const struct grid_cell *gc) 2629 { 2630 struct grid_cell *tc = &tty->cell; 2631 int have_ax; 2632 2633 /* No changes? Nothing is necessary. */ 2634 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2635 return; 2636 2637 /* 2638 * Is either the default colour? This is handled specially because the 2639 * best solution might be to reset both colours to default, in which 2640 * case if only one is default need to fall onward to set the other 2641 * colour. 2642 */ 2643 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2644 /* 2645 * If don't have AX but do have op, send sgr0 (op can't 2646 * actually be used because it is sometimes the same as sgr0 2647 * and sometimes isn't). This resets both colours to default. 2648 * 2649 * Otherwise, try to set the default colour only as needed. 2650 */ 2651 have_ax = tty_term_flag(tty->term, TTYC_AX); 2652 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2653 tty_reset(tty); 2654 else { 2655 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2656 if (have_ax) 2657 tty_puts(tty, "\033[39m"); 2658 else if (tc->fg != 7) 2659 tty_putcode_i(tty, TTYC_SETAF, 7); 2660 tc->fg = gc->fg; 2661 } 2662 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2663 if (have_ax) 2664 tty_puts(tty, "\033[49m"); 2665 else if (tc->bg != 0) 2666 tty_putcode_i(tty, TTYC_SETAB, 0); 2667 tc->bg = gc->bg; 2668 } 2669 } 2670 } 2671 2672 /* Set the foreground colour. */ 2673 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2674 tty_colours_fg(tty, gc); 2675 2676 /* 2677 * Set the background colour. This must come after the foreground as 2678 * tty_colour_fg() can call tty_reset(). 2679 */ 2680 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2681 tty_colours_bg(tty, gc); 2682 2683 /* Set the underscore colour. */ 2684 if (gc->us != tc->us) 2685 tty_colours_us(tty, gc); 2686 } 2687 2688 static void 2689 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2690 struct grid_cell *gc) 2691 { 2692 u_char r, g, b; 2693 u_int colours; 2694 int c; 2695 2696 /* 2697 * Perform substitution if this pane has a palette. If the bright 2698 * attribute is set and Nobr is not present, use the bright entry in 2699 * the palette by changing to the aixterm colour 2700 */ 2701 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2702 c = gc->fg; 2703 if (c < 8 && 2704 gc->attr & GRID_ATTR_BRIGHT && 2705 !tty_term_has(tty->term, TTYC_NOBR)) 2706 c += 90; 2707 if ((c = colour_palette_get(palette, c)) != -1) 2708 gc->fg = c; 2709 } 2710 2711 /* Is this a 24-bit colour? */ 2712 if (gc->fg & COLOUR_FLAG_RGB) { 2713 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2714 if (tty->term->flags & TERM_RGBCOLOURS) 2715 return; 2716 colour_split_rgb(gc->fg, &r, &g, &b); 2717 gc->fg = colour_find_rgb(r, g, b); 2718 } 2719 2720 /* How many colours does this terminal have? */ 2721 if (tty->term->flags & TERM_256COLOURS) 2722 colours = 256; 2723 else 2724 colours = tty_term_number(tty->term, TTYC_COLORS); 2725 2726 /* Is this a 256-colour colour? */ 2727 if (gc->fg & COLOUR_FLAG_256) { 2728 /* And not a 256 colour mode? */ 2729 if (colours < 256) { 2730 gc->fg = colour_256to16(gc->fg); 2731 if (gc->fg & 8) { 2732 gc->fg &= 7; 2733 if (colours >= 16) 2734 gc->fg += 90; 2735 } 2736 } 2737 return; 2738 } 2739 2740 /* Is this an aixterm colour? */ 2741 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2742 gc->fg -= 90; 2743 gc->attr |= GRID_ATTR_BRIGHT; 2744 } 2745 } 2746 2747 static void 2748 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2749 struct grid_cell *gc) 2750 { 2751 u_char r, g, b; 2752 u_int colours; 2753 int c; 2754 2755 /* Perform substitution if this pane has a palette. */ 2756 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2757 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2758 gc->bg = c; 2759 } 2760 2761 /* Is this a 24-bit colour? */ 2762 if (gc->bg & COLOUR_FLAG_RGB) { 2763 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2764 if (tty->term->flags & TERM_RGBCOLOURS) 2765 return; 2766 colour_split_rgb(gc->bg, &r, &g, &b); 2767 gc->bg = colour_find_rgb(r, g, b); 2768 } 2769 2770 /* How many colours does this terminal have? */ 2771 if (tty->term->flags & TERM_256COLOURS) 2772 colours = 256; 2773 else 2774 colours = tty_term_number(tty->term, TTYC_COLORS); 2775 2776 /* Is this a 256-colour colour? */ 2777 if (gc->bg & COLOUR_FLAG_256) { 2778 /* 2779 * And not a 256 colour mode? Translate to 16-colour 2780 * palette. Bold background doesn't exist portably, so just 2781 * discard the bold bit if set. 2782 */ 2783 if (colours < 256) { 2784 gc->bg = colour_256to16(gc->bg); 2785 if (gc->bg & 8) { 2786 gc->bg &= 7; 2787 if (colours >= 16) 2788 gc->bg += 90; 2789 } 2790 } 2791 return; 2792 } 2793 2794 /* Is this an aixterm colour? */ 2795 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2796 gc->bg -= 90; 2797 } 2798 2799 static void 2800 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2801 struct grid_cell *gc) 2802 { 2803 int c; 2804 2805 /* Perform substitution if this pane has a palette. */ 2806 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2807 if ((c = colour_palette_get(palette, gc->us)) != -1) 2808 gc->us = c; 2809 } 2810 2811 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2812 if (gc->us & COLOUR_FLAG_256) 2813 gc->us = colour_256toRGB (gc->us); 2814 } 2815 2816 static void 2817 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2818 { 2819 struct grid_cell *tc = &tty->cell; 2820 char s[32]; 2821 2822 /* Is this a 24-bit or 256-colour colour? */ 2823 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2824 if (tty_try_colour(tty, gc->fg, "38") == 0) 2825 goto save; 2826 /* Should not get here, already converted in tty_check_fg. */ 2827 return; 2828 } 2829 2830 /* Is this an aixterm bright colour? */ 2831 if (gc->fg >= 90 && gc->fg <= 97) { 2832 if (tty->term->flags & TERM_256COLOURS) { 2833 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2834 tty_puts(tty, s); 2835 } else 2836 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8); 2837 goto save; 2838 } 2839 2840 /* Otherwise set the foreground colour. */ 2841 tty_putcode_i(tty, TTYC_SETAF, gc->fg); 2842 2843 save: 2844 /* Save the new values in the terminal current cell. */ 2845 tc->fg = gc->fg; 2846 } 2847 2848 static void 2849 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2850 { 2851 struct grid_cell *tc = &tty->cell; 2852 char s[32]; 2853 2854 /* Is this a 24-bit or 256-colour colour? */ 2855 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2856 if (tty_try_colour(tty, gc->bg, "48") == 0) 2857 goto save; 2858 /* Should not get here, already converted in tty_check_bg. */ 2859 return; 2860 } 2861 2862 /* Is this an aixterm bright colour? */ 2863 if (gc->bg >= 90 && gc->bg <= 97) { 2864 if (tty->term->flags & TERM_256COLOURS) { 2865 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2866 tty_puts(tty, s); 2867 } else 2868 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8); 2869 goto save; 2870 } 2871 2872 /* Otherwise set the background colour. */ 2873 tty_putcode_i(tty, TTYC_SETAB, gc->bg); 2874 2875 save: 2876 /* Save the new values in the terminal current cell. */ 2877 tc->bg = gc->bg; 2878 } 2879 2880 static void 2881 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2882 { 2883 struct grid_cell *tc = &tty->cell; 2884 u_int c; 2885 u_char r, g, b; 2886 2887 /* Clear underline colour. */ 2888 if (gc->us == 0) { 2889 tty_putcode(tty, TTYC_OL); 2890 goto save; 2891 } 2892 2893 /* Must be an RGB colour - this should never happen. */ 2894 if (~gc->us & COLOUR_FLAG_RGB) 2895 return; 2896 2897 /* 2898 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2899 * capability format. Calculate the colour value. 2900 */ 2901 colour_split_rgb(gc->us, &r, &g, &b); 2902 c = (65536 * r) + (256 * g) + b; 2903 2904 /* 2905 * Write the colour. Only use setal if the RGB flag is set because the 2906 * non-RGB version may be wrong. 2907 */ 2908 if (tty_term_has(tty->term, TTYC_SETULC)) 2909 tty_putcode_i(tty, TTYC_SETULC, c); 2910 else if (tty_term_has(tty->term, TTYC_SETAL) && 2911 tty_term_has(tty->term, TTYC_RGB)) 2912 tty_putcode_i(tty, TTYC_SETAL, c); 2913 2914 save: 2915 /* Save the new values in the terminal current cell. */ 2916 tc->us = gc->us; 2917 } 2918 2919 static int 2920 tty_try_colour(struct tty *tty, int colour, const char *type) 2921 { 2922 u_char r, g, b; 2923 2924 if (colour & COLOUR_FLAG_256) { 2925 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2926 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff); 2927 else if (tty_term_has(tty->term, TTYC_SETAB)) 2928 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff); 2929 return (0); 2930 } 2931 2932 if (colour & COLOUR_FLAG_RGB) { 2933 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2934 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2935 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b); 2936 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2937 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b); 2938 return (0); 2939 } 2940 2941 return (-1); 2942 } 2943 2944 static void 2945 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2946 { 2947 memcpy(gc, &grid_default_cell, sizeof *gc); 2948 gc->fg = wp->palette.fg; 2949 gc->bg = wp->palette.bg; 2950 } 2951 2952 void 2953 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2954 { 2955 struct options *oo = wp->options; 2956 struct format_tree *ft; 2957 2958 memcpy(gc, &grid_default_cell, sizeof *gc); 2959 2960 if (wp->flags & PANE_STYLECHANGED) { 2961 log_debug("%%%u: style changed", wp->id); 2962 wp->flags &= ~PANE_STYLECHANGED; 2963 2964 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 2965 FORMAT_NOJOBS); 2966 format_defaults(ft, NULL, NULL, NULL, wp); 2967 tty_window_default_style(&wp->cached_active_gc, wp); 2968 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 2969 tty_window_default_style(&wp->cached_gc, wp); 2970 style_add(&wp->cached_gc, oo, "window-style", ft); 2971 format_free(ft); 2972 } 2973 2974 if (gc->fg == 8) { 2975 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2976 gc->fg = wp->cached_active_gc.fg; 2977 else 2978 gc->fg = wp->cached_gc.fg; 2979 } 2980 2981 if (gc->bg == 8) { 2982 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2983 gc->bg = wp->cached_active_gc.bg; 2984 else 2985 gc->bg = wp->cached_gc.bg; 2986 } 2987 } 2988 2989 static void 2990 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2991 struct colour_palette *palette, u_int bg, struct hyperlinks *hl) 2992 { 2993 struct grid_cell gc; 2994 2995 memcpy(&gc, &grid_default_cell, sizeof gc); 2996 gc.bg = bg; 2997 tty_attributes(tty, &gc, defaults, palette, hl); 2998 } 2999 3000 static void 3001 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data) 3002 { 3003 struct tty *tty = data; 3004 struct client *c = tty->client; 3005 3006 c->flags &= ~CLIENT_CLIPBOARDBUFFER; 3007 free(c->clipboard_panes); 3008 c->clipboard_panes = NULL; 3009 c->clipboard_npanes = 0; 3010 3011 tty->flags &= ~TTY_OSC52QUERY; 3012 } 3013 3014 void 3015 tty_clipboard_query(struct tty *tty) 3016 { 3017 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 3018 3019 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY)) 3020 return; 3021 tty_putcode_ss(tty, TTYC_MS, "", "?"); 3022 3023 tty->flags |= TTY_OSC52QUERY; 3024 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty); 3025 evtimer_add(&tty->clipboard_timer, &tv); 3026 } 3027